This standard applies to international trade, road, rail, water transport and transport by large-capacity fixed-wing transport aircraft, as well as combined transport between these modes of transport. GB/T 17770-1999 Container Air/Land/Water (Combined Transport) General Container Technical Requirements and Test Methods GB/T17770-1999 Standard Download Decompression Password: www.bzxz.net
This standard applies to international trade, road, rail, water transport and transport by large-capacity fixed-wing transport aircraft, as well as combined transport between these modes of transport.

GB/T17770—1999
This standard is equivalent to the international standard ISO8323:1985 "Technical requirements and test methods for air/land/water (intermodal) containers", and is equivalent to it in terms of technical content and writing rules. The writing of this standard complies with the provisions of the national standard GB/T1.1—1993 "Guidelines for standardization work Part 1: Basic provisions for standard writing". Appendix A and Appendix B of this standard are both appendices to the standard. This standard is proposed by the Ministry of Transport of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Container Standardization. Unit 1: Drafting and presentation of standards
The drafting units of this standard: Standard Metrology Research Institute of the Ministry of Transport, China Civil Aviation Science and Technology Research Center, Standard Metrology Research Institute of the Ministry of Railways The main drafters of this standard: Zhang Jingxuan, Zhang Yang, Wang Jinfeng, Qi Xiangchun. 425
GB/T17770--1999
ISOForeword
The International Organization for Standardization (ISO) is a worldwide federation of national standardization bodies (ISO member bodies) of various countries. The drafting of international standards is generally carried out through the technical committees of ISO. Each member body has the right to send representatives to participate in the technical committees of the topics it is concerned about. All governmental and non-governmental international organizations that have liaison relations with ISO also participate in the relevant work. The draft international standards prepared by each technical committee are first distributed to the member bodies for comments before being adopted as international standards by the ISO Council. According to ISO's procedures, the international standards can only be officially published as international standards when more than 75% of the votes in the member body vote are in favor. International standard ISO8323 was jointly drafted by ISO/TC104 Container Technical Committee and ISO/TC20 Aerospace Vehicle Technical Committee. It has replaced the ISO1496/7:1974 standard that was abolished in the 1984 version of this standard. 426
0.1Overview
National Standard of the People's Republic of China
Container Air/Surface/Water (Intermodal)
Technical requirements and test methods for general purpose containers Freight containers
--Air/surface (intermodal) general purpose containersSpecification and tests
GB/T 17770--1999
idtISO8323:1985
Chapters 1 to 6 of this standard list the basic provisions for technical requirements and test methods for general purpose containers for air/surface/water (intermodal) transport. The detailed design requirements are detailed in Appendix A. For other national standards applicable to this type of container, see Appendix B. IS04128 lists the requirements for general purpose containers for air transport. This standard does not cover the requirements for containers for transport by wing-lift aircraft. When necessary, such national standards will be formulated separately. Note: The main basic standards and detailed standards are indicated by the keyword "shall". The recommended basic standards and detailed standards are indicated by the keyword "should". Although the recommended standard is non-mandatory, it is extremely important to provide durable, economical and practical air/land/water (intermodal) general purpose containers. 0.2 Definitions
This standard adopts the following definitions.
Air/land/water (intermodal) general purpose container: a transport device with a volume equal to or greater than 1m2, which is equipped with top corner fittings and bottom corner fittings, has a restraint device coordinated with the aircraft restraint system, and the bottom surface of the bottom structure is flush so that it can operate on a rolling cargo loading and unloading system. This type of container is mainly used for intermodal transport between air, land and water. 1 Scope
1.1 This standard applies to international trade, road, rail, water transport and transport by large-capacity fixed-wing transport aircraft, as well as intermodal transport between these modes of transport.
1.2 The code, identification and marking of this container shall comply with the provisions of GB/T1836. To indicate air/land/water (intermodal) containers, the symbol in Figure 1 shall be arranged in the upper left corner of the end wall and side wall, and may also be marked on the top if appropriate, and shall comply with the requirements of GB/T 1836 (see Appendix B3).
Note: If any other markings are used on the container, they shall not prevent the positioning of the markings in accordance with the requirements of GB/T 1836. 1.3 The container type code of this standard is: Type
Brown mark code identification
Air/land/water (intermodal) general cargo 90-99 (A.--As): Fixed-wing aircraft 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards are subject to revision, and parties using this standard should explore the possibility of using the latest version of the following standards. GB/T1413-1998 Classification, external dimensions and rated mass of series 1 containers (idtISO668:1995) Approved by the State Administration of Quality and Technical Supervision on June 11, 1999 and implemented on April 1, 2000
GB/T 17770-1999
GB/T1835-1995 Technical conditions for corner fittings of containers GB/T1836-1997 Container codes, identification and marking (idtISO6346:1995) GB/T3219-1995 Technical conditions and test methods for 1CC, 1C and 1CX general purpose containers GB/T 5338-1995
1Technical conditions and test methods for AAA, 1AA, 1A and 1AX general purpose containers GB/T15140-1994 Technical requirements for air cargo container units GB/T17382-1998 Series 1 Container handling and securing (eqvISO3874:1988) ISO4116:1986 Requirements for the compatibility of aircraft unit loading devices and ground equipment ISO 4128:1985
Aircraft empty modular containers
3 General characteristics
3.1 Airworthiness
It shall meet the airworthiness requirements for container design characteristics established by the competent authorities, such as ultimate load (see 5.2.1), rapid decompression (see 5.3.2), fire protection and marking.
To this end, it shall comply with GB/T15140.
3.2 Empty Container Mass
Taking into account the special requirements of aircraft, the design and materials of the container should be comprehensively considered so as to make the empty container mass as light as possible. 3.3 Customs Seal
Since air/land/water (intermodal) general purpose containers are mainly shipped on international routes under customs control, the container design should meet the requirements of the following international agreements:
a) UN/IMO: (United Nations/International Maritime Organization) Customs Agreement on Containers, Geneva, December 2, 1972; b) UN/ECE: (United Nations/Economic Commission for Europe) United Nations/International Customs Convention/Economic Commission for Europe/International Convention on the Clearance of Goods (TIR International Agreement), Geneva, November 14, 1975. The requirements affecting container design are listed in Annex 4 of the Agreement cited in 3.3a) and Annex 2 of the Agreement cited in 3.3b), which are the relevant technical conditions applicable to containers suitable for international transportation after customs sealing. The design requirements of containers are listed in A5 of Appendix A. In accordance with Annex 5 of the Agreement referenced in 3.3a) and Annex 3 of the Agreement referenced in 3.3b), a certificate of approval shall be issued by the competent national authority and a conforming approval plate (minimum dimensions 200 mm × 100 mm (8 in × 4 in) shall be riveted accordingly near the lower edge of the container door.
4 Dimensions and ratings
4.1 External dimensions
The external dimensions and tolerances of the containers covered by this standard are listed in GB/T 1413 for Series 1A, 1B, 1C and 1D containers (see Annex B1 of this standard). Components of the container shall not exceed these specified external dimensions. 4.2 Minimum internal dimensions
The internal dimensions of the container shall be as large as possible, but as a minimum shall comply with the values ​​shown in Table 1. The dimensions listed are measured at an ambient temperature of 20°C (68°F). Dimensions measured at other temperatures shall be converted accordingly. The internal dimensions specified in Table 1 do not take into account the amount of corner fittings extending into the interior of the container as a reduction in the size of the container. 4.2.1 Door opening
For ease of loading, the container door should be designed to be as large as possible. Each container is provided with at least one door opening at one end. The door opening size should be as large as possible, and the minimum size should not be less than: Minimum height: 2134mm (84in)
Minimum width: 2286mm (90in)
Container
4.3 Rated values ​​
Minimum height
2 197 mm
(7 ft 2 in)
GB/T177701999
Table 1 Minimum internal dimensions
Minimum width
The ratings of general-purpose air/land/water (intermodal) containers are defined as follows: 4.3.1 Maximum gross mass: The maximum permissible gross mass of the container and its load. R: The maximum gross mass of a general-purpose air/land/water (intermodal) container; R. : The maximum gross mass of a land/water (intermodal) container (applicable only to stacking). mm
4.3.2 Empty container mass T: The mass of an empty container, including its normally attached loading and unloading bolting devices. 4.4 Maximum gross mass R of a general-purpose air/land/water (intermodal) container and load distribution on any transport system, the total mass when using the container shall not exceed the values ​​listed in Table 2a. Table 2a Maximum gross mass R of containers
Air/Land/Water (Intermodal) Containers
Maximum Gross Mass R.
Minimum Length
However, for Type 1A, 1B and 1C containers a uniformly distributed load of up to 6759 kg (14900 lb) may be placed over a linear length of 3 m (10 ft).
4.5 Centre of Gravity
The cargo shall be placed so that the centre of gravity is within the limits specified below: a) ±10% of the external width measured from the geometric centre; b) ±5% of the external length measured from the geometric centre; c) between 356 mm (14 in) and 1219 mm (48 in) in height measured from the bottom of the floor. To achieve the above asymmetric conditions, it is assumed that the density of the cargo is linearly distributed. Basic Design Requirements
5.1 General
All types of containers shall be watertight.
When the container is loaded to the maximum gross mass, it shall be able to meet the operational requirements specified in 5.1.15.1.4. 5.1.1 Stacking
Air/land/water (intermodal) general purpose containers shall be able to be stacked in the following positions (see Table 3). Terminal stacking: Load under two containers of the same size to their rated values, see 2Rs specified in GB/T 1413. .-Ship transport, for underdeck stacking only: Load under one container of the same size to its rated value, see Rsc specified in GB/T 1413
For land/water (intermodal) general purpose containers, for stacking, the maximum gross mass R. shall not exceed the values ​​listed in Table 2b. 429
Land/water (intermodal) containers
GB/T 17770—1999
Table 2b Maximum gross mass R of containers.
Maximum gross mass
203201
1) For type 1C containers, the specified gross mass of 24 000 kg (52 920 1b) shall be taken into account, which has been increased to this rated value in GB/T 1413. 5.1.2 Lifting by top corner fittings
Series 1A, 1B and 1C containers shall be lifted from four top corner fittings, with the lifting force applied vertically. For type 1D containers, it is permitted to lift by four top corner fittings, with the lifting force applied in the direction between the vertical and an angle of 60° to the horizontal (see 6.3-test 2).
5.1.3 Lifting by bottom corner fittings
Series 1A, 1B, 1C and 1D containers shall be lifted by four bottom corner fittings, with the lifting gear connected to the crossbeam located in the middle above the container (see 6.4-test 3).
5.1.4 Ground handling
5.1.4.1 Vertical movement
Designers should take into account that ground handling equipment will subject containers to certain loads. It is assumed that the lifting and lowering of the container on the support will generate dynamic loads. The combined effect of these dynamic loads will change the center of gravity of the load in the container. It is assumed that gravity generates an equal vertical load not greater than 2.0R (see 6.2-
-Test 1, 6.3---Test 2, 6.4--Test 3). The bottom of the container should be flat. For dock stacking, ISO-standard flat-bottom container inter-layer connectors or other partition devices can be connected to suitable corner fittings.
For stacking in the cargo hold (i.e. the upper two layers), the inter-layer connector should be connected to each of the four bottom corner fittings (see GB/T17382). Table 3 Stacking
Stacking at the terminal
5.1.4.2 Horizontal movement
Stacking below deck during ship operation
Ship deck
When the container is supported and restrained only by the four bottom corner fittings, the container design should take into account the longitudinal external conditions generated during rail transportation. Therefore, the container needs to withstand the equivalent of 2g horizontal acceleration force (see 6.5-Test 4) by its four bottom corner fittings. The container design should also take into account the maximum forward force during land transportation. Therefore, the end wall or door of the container should withstand the equivalent of 0.4g horizontal acceleration force (see 6.6.2-Test 5.1).
The container design should also take into account the maximum lateral force during land transportation. Therefore, the side wall of the container should withstand the equivalent of 0.6g horizontal acceleration force (see 6.7.2-Test 6.1). 430
5.1.4.3 Crossover and ramp
GB/T 17770—1999
When the container moves along the roller conveyor system, it shall be able to pass through a ramp or crossover point without permanent deformation or damage (see 6.12—test 11).
5.1.4.4 Roof strength (walkway load)
The container roof shall be able to withstand a uniformly distributed load of not less than 300 kg (660 lb) applied vertically downward over an area of ​​600 mm×300 mm (24 in×12 in) (see 6.8.2 test 7.1). 5.1.4.5 Deck securing
Since air/land/water (intermodal) general purpose containers are only placed below the deck during ship transportation (see the two positions mentioned above), no specific provisions are made for deck securing.
5.1.4.6 Restraining of floor plates on roller conveyors Restraining devices for ground transport on roller conveyors, not fitted with rotating locking pin joints, shall be provided with restraining grooves as shown in Figure 7. The inner surface of each outwardly directed groove (or lock block) shall be capable of lateral restraint of 33% of the maximum total mass (R). The grooves on the same side of the bottom beam of the container shall be capable of withstanding an upward bolting force equivalent to 20% of the maximum total mass R. (see 6.13 - Test 12).
5.1.4.7 Grabbing grooves
No provision shall be made for grab arms or similar equipment to handle containers. 5.1.4.8 Loading by vehicles or similar equipment The floor of the container shall be capable of withstanding the concentrated dynamic loads imposed by a motor vehicle or similar equipment when loading on its floor (see 6.9 - Test 8).
5.2 Aircraft restraint loads
5.2.1 Ultimate loads
Air freight containers differ from their terrestrial counterparts in that they are an integral part of the aircraft restraint system and are therefore subject to additional design complexity requirements in accordance with aircraft airworthiness certification requirements. For this reason, this standard specifies design parameters that are not normally included in other national standards. When the container is supported on a roller system that complies with 5.4.6, the restraint of the floor complies with the requirements of 5.2.2 and 5.2.3, and the center of gravity of the cargo is within the range specified in 4.5, the container shall be designed to withstand the ultimate loads given in GB/T15140 (see Appendix B4 of this standard). Under these loads, the container shall not exhibit permanent deformation that would affect the loading and unloading of the cargo inside the container. 5.2.2 Floor restraint loads
Apply lateral loads to the floor of the container. As shown in Figure 4, the upward, forward and rearward loads shall be applied through the corner fittings, and the connectors shall be inserted into the restraint grooves as shown in Figures 2 and 3. The design shall allow forward and backward loads to be applied to the following number of load-bearing grooves. -1A (40ft) container: 11 grooves -1B (30ft) container: 8 grooves
-1C (20ft) container: 5 grooves -1D (10ft) container: 2 grooves Each groove shall be able to withstand a forward and backward limit load of 8340daN (18750lb). Acting on the joint surface through the restraining door as shown in Figure 4. For forward and backward loads, grooves on either one or both sides of the container can withstand this load. The container design shall be equally distributed on each side of the box 50% to 60% of the total number of grooves to apply the restrained vertical load. The upward load shall be applied by the minimum number of connectors inserted into the side restraining grooves as shown in Figure 4 (see 6.6.3, 6.6.4, 6.7.3, 6.7.4, 6.8.3 and 6.8.4).
5.2.3 Bottom plate limit load 1D type container
Except 5.2.2, when the connectors provided in Figure 5 and with the shape shown in Figure 6 are used to limit the forward, backward and vertical upward limit loads of the 1D container, the end limit grooves should be designed. The container size and position are shown in Figure 7. 5.3 Assembly of containers
5.3.1 The container structure should be strong and watertight. GB/T17770—1999
5.3.2 If the door closure cannot fully meet the ventilation requirements, a minimum ventilation area of ​​77.4cm2 (12in\) should be provided for every 3m (10ft) of the container length. Each ventilation hole should be properly protected during cargo movement to ensure that the container can maintain the required ventilation area during rapid decompression of the aircraft.
5.3.3 Four corner fittings that comply with GB/T1835 (see Appendix B2 of this standard) should be provided on the container body. The upper surface of the top corner fitting should protrude at least 6mm (1/4in) from the top of the container. The four corners of the container bottom shall be equipped with corner fittings that meet the requirements of Figure 10. The dimensions and tolerances of the centerline spacing of the main holes of the corner fittings shall comply with GB/T1413 (see Appendix B1 of this standard). 5.4 Container bottom plate
5.4.1 The container shall have a flat bottom with no protruding parts below the bottom. The lower surface of each side beam and bottom corner fitting shall be flush with the bottom surface of the container (see Figure 9).
5.4.2 Along the length of the container, the bottom surface shall be straight, and the minimum spacing between wave bends is 915mm (36in), and the corrugation coefficient is allowed to be within 3mm (0.125in).
5.4.3 The side beams of the bottom of the container shall be designed with limit grooves according to the requirements of Figures 2 and 3. The end grooves shall meet the requirements of Figure 7. The contact surface between the grooves on the bottom side beams shall be flat and continuous to provide a suitable interface for the automatic aircraft locking device in the cabin. Figures 3 and 7 show schematic diagrams of the side beams at the bottom of the box. 5.4.4 Securements should be installed inside the box for reinforcement. The securements are set along the perimeter of the bottom of the box, with a centerline distance of 600mm (24in), but no securements are installed at the threshold. These securements must be "D-shaped rings or equivalent. Each securement should be able to withstand forces from any direction, with a force value of 1776daN (40001b).
5.4.51A and 1B containers must adapt to the structural form of the aircraft. When the bottom load reaches the rated load listed in Table 2 and the side walls are not restricted, the free deformation range of the box body is The maximum value of the bottom stiffness along the length of the bottom (i.e., the forward and rearward directions) is 339075N·m2/m (3×10°1bf·in2/in) or 824000Pa/25.4mm. Note: These requirements for 1A and 1B containers are related to current aircraft and may be improved for future aircraft. 5.4.6 When the container is loaded to the maximum rated gross mass and is operated on the following conveyor system, a bottom plate should be provided for support and ease of movement. - On a 1930mm conveyor consisting of four rollers On the system, the spacing of each roller is equal, measured from the center point of the roller. Each roller consists of parallel rollers with a diameter of 38mm (1.5in) and a length of 76mm (3in), and the rollers are spaced 254mm (10in). At the same time, the chamfer radius of the roller end is 1.5mm (0.06in), and the container moves perpendicular to the center line of the roller. - Universal rollers with a ball diameter of 25.4mm1in) and a contact length of 51mm2in) are set on a 305mm×305mm (12in×12in) mesh transmission system. Container The container can move in all directions on it. A ball transmission device with a ball diameter of 25.4mm1in is set on a 127mm×127mm (5in×5in) mesh transmission system. The container can move in all directions on it (see 6.9.2--Test 8.2). 5.4.7 The bottom plate design should allow the deformation of its bottom under force during loading and unloading on the ground to neither exceed the thickness of the adapter nor the size of the protruding part of the corner piece of the water/land universal container placed below it in the grid. In the design, this size is 19mm (0. 75 in).
Therefore, the deflection of any part of the floor shall not exceed 19 mm (0.75 in) under either dynamic or static conditions (see 6.2 - Test 1).
5.5 Partitions and doors
5.5.1 Any partition in a container may be dangerous if it is not secure. Therefore, a reliable safety system should be provided for the partition, which can give some indication that the partition is fixed in the proper position. In particular, when the container is supported by the bottom corner fittings alone or on the minimum transmission system described in ISO 4116, the door should be securely fixed in the open and closed positions. 5.5.2 The lower edge of the door and its connecting hardware should not encroach on the area of ​​the mandatory stop groove shown in Figure 7. 5.5.3 When the container is placed on an uneven surface with a height difference of up to 12.7 mm (0.5 in) across the width of the door opening, it should be designed to ensure the opening and locking of the door quick release lock.
GB/T 17770-1999
5.5.4 The safety device should be a mechanical device to indicate that the door can be locked reliably. 5.5.5 Special attention should be paid to prevent water from penetrating into the container through the interface between the door and the container body (see 6.11-Test 10). 5.5.6 In order to facilitate manual movement of containers, handles, straps or levers should be installed on the doors of 1D containers. These devices should be able to withstand a tensile force of 450daN (1000lb) in any direction. In order to facilitate gripping with gloves, an area equal to 152mm (6in) wide and 76mm (3in) deep should be provided for gripping. 5.6 Optional facilities
5.6.1 Fork grooves
5.6.1.1 As an optional facility, fork grooves can be provided to meet the requirements of 1C and 1D empty and loaded container operations. Its dimensions should meet the requirements specified in Figure 8. The fork pockets shall be completely through the entire container bottom structure to allow forklifts to enter from any side (see 6.10 - Test 9). The fork pocket design shall take into account the forks and shall not exceed the entire width of the container. The fork arm is inclined at 10°, and the forks are lifted and subjected to a force equivalent to 1.25F by the top of the groove. Each fork is neither more than 200mm (8in) wide nor less than 1828mm (72in) long. When selecting the materials used for the groove surface and the through hole, it should be taken into account that the forks are actually made of steel plates and the angle tolerance of the forks entering the fork pockets is ±3°. 5.6.2 The device for hanging the goods in the box is an optional facility. The hanging clip and its movement trajectory may have a great influence on the design and testing of the box. Therefore, the standards and requirements for this component are subject to further research and determination. 6 Tests
6.1 Overview
In addition to meeting the design requirements specified in Chapter 5, the container shall also meet the tests specified in 6.2 to 6.13. It is recommended that the watertightness test (test 10) be carried out last.
Unless otherwise specified, the design load is used throughout the test process. When it is required to confirm the analysis data, the test can be repeated under the limit load conditions as needed. Any container that has undergone such tests should not be used until the structure and design parameters have been fully restored. When no specific provisions are made for the test, the design requirements specified in Chapter 5 can be verified by calculation or test. 6.1.1 Symbol R. represents the maximum total mass of air/land/water (intermodal) containers (see Table 2a). The symbol P represents the maximum load of the container during the test, that is, P is the mass after deducting the empty container mass T from the maximum total mass: Ra=P+T
Symbol R. represents the assumed maximum total mass of land/water (intermodal) containers (see Table 2b). 6.1.2 Unless otherwise specified, the test load in the box should be evenly distributed. Tests 5.2 (see Figure 11b), 5.3 (see Figure 11b), 6.2 (see Figure 11c), 6.3 (see Figure 11c), 7.2 (see Figure 11c), 7.3 (see Figure 11d), 8.2 (see Figure 11d) and 11 (see Figure 11e) shall take into account the maximum excursion of the centre of gravity specified in 4.5.
6.1.3 The test equipment and test methods described in this standard are not intended to be exclusive. Therefore, alternative equivalent methods may be used to obtain the required test results.
6.1.4 When restraint or movement is performed on the aircraft system, the test system shall comply with 5.4.6. The container is guided along the conveying device and securely locked in the quick-release lock position. Suitable quick-release locks and guides shall be provided. The test system shall be of sufficient length to allow the longest container tested to be repeated for the transfer test.
6.1.5 The test load reactions applied to a 6 m (20 ft) container are shown in the schematic diagrams of Figures 11a to 11f (Tests 1 to 12) (the diagrams are drawn approximately to scale). If the geometrical arrangement of the restraining device varies and the test method varies, this shall be stated in the appropriate place below the schematic diagram. 6.2 Test 1 - Stacking
6.2.1 Purpose
This test verifies the ability of an air/land/water (intermodal) container to support the stacking of two fully loaded land containers of the same size on the ground (2R,).
This test also verifies the ability of an air/land/water (intermodal) container placed in a cargo hold grid to support the stacking of a fully loaded container of the same length (R,).
6.2.2 Method
GB/T 17770—1999
The container under test shall be placed on four horizontal supports. Each support is located under each bottom corner fitting, pushing against the corner fitting or corner structure, and its size is also the same. The average load per person in the box, the sum of the deadweight of the box and the test load is equivalent to 1.8R. The uniform load applied in the test is 1.8RT.
The container under test is simultaneously applied vertically to the four top corner fittings, and the container should remain horizontal during the entire test. The test force should act directly on the corner fitting or a pad with a thickness of not less than 25.4mm (1in) and the same area as the corner fitting. Each pad should be offset in the same direction by 25.4mm1in horizontally and 38mm (1.5in) vertically. The test load value applied to each corner fitting should be determined according to Table 4. Table 4 Corner fitting test load
Box type code
Test load on each corner \
1) When the container is under load, the test load value should take into account the deadweight of the lifting device 5000kg (11000 1b). 6.2.3 Requirements
During the entire test, the maximum downward deflection of the bottom plate shall not exceed 19 mm (0.75 in). After the test, the container shall not have permanent deformation or abnormality that affects its use, and shall meet the operational requirements related to loading, unloading, fixing and interchange.
6.3 Test 2 - Lifting by corner fittings
6.3.1 Purposebzxz.net
This test verifies the bearing capacity of the container when it is lifted by the four top corner fittings of the container with a sling. 6.3.2 Method
Install a per capita distributed load in the container, the value of which is the sum of the deadweight of the container plus the test load of 2R. , and lift it steadily by the four top corner fittings without obvious acceleration or deceleration. The test load is 2R. -T. During lifting, no part of the container shall touch the ground. The lifting force for 1A, 1B and 1C containers is vertical. For 1D containers, the lifting force is vertical. Each lifting force is 60° to the horizontal plane.
After lifting, keep it for at least 5 minutes and then lower it to the ground. 6.3.3 Requirements
After the test, the container should not show any permanent deformation or abnormality that affects its use, and should meet the requirements of loading, unloading, fixing and interchange operations.
6.4 Test 3 - Lifting by bottom corner fittings
6.4.1 Purpose
This test verifies the ability of the container to be lifted by four bottom corner fittings. The lifting equipment is connected to the bottom corner fittings and connected to a crossbeam centered above the top of the container.
6.4.2 Method
Put a per capita load in the container, the sum of its deadweight and the test load is equal to 2R. Then lift it steadily from the side holes of the four bottom corner fittings to avoid obvious acceleration or deceleration. The test load is 2R.一T. The lifting force shall be applied at the following angles:
1A container at 30° to the horizontal plane; 434
1B container at 37° to the horizontal plane; 1C container at 45° to the horizontal plane; 1D container at 60° to the horizontal plane. GB/T 17770-1999
In any case, the distance between the line of action of the lifting force and the outer side of the corner fitting shall not be greater than 38mm (1.5in). The lifting device shall only be connected to the four bottom corner fittings.
The container shall be suspended for 5min and then lowered to the ground. 6.4.3 Requirements
After the test, the container shall not have permanent deformation or abnormality that affects its use, and shall meet the requirements for loading, unloading, fixing and interchange operations.
6.5 Test 4 - Longitudinal bolting
6.5.1 Self-loading
This test verifies the ability of the container to withstand the external longitudinal bolting under the dynamic load of a railway train, i.e. under an acceleration equivalent to 2R.
6.5.2 Method
The container is loaded evenly on the floor, the sum of its deadweight and the test load equal to R., and is bolted to the rigid fasteners through the two bottom holes of the bottom corner fittings at one end of the container. For the purpose of the test, the load shall be determined as R. -T. A horizontal force with a test force value of 2R. is applied to the container through the bottom holes of the bottom corner fittings at the other end, first towards the fasteners and then in the opposite direction.
6.5.3 Requirements
During the test, the box is supported by the bottom corner fittings and a load equivalent to R. is applied downwards inside the box. After the horizontal load is removed, check whether the door and the door operation are normal.
After the test, the container shall not show any permanent deformation or abnormality that would affect its use, and shall meet the requirements for loading, unloading, fixing and interchange operations.
6.6 Test 5 - End wall/end door strength
6.6.1 Purpose
This test is to verify that the end walls and doors of the container can withstand the longitudinal inertia forces that may be encountered during land and air transport when the container is bolted by bottom corner fittings or relevant aircraft restraint systems. 6.6.2 Test 5.1 - Land/Water (Intermodal) Mode 6.6.2.1 Method
The container is bolted by the bottom holes of the four bottom corner fittings. A test load of 0.4 (R.-T) is applied horizontally to one end of the container. Unless the end walls are identical, the test shall be repeated on the opposite end wall of the container. 6.6.2.2 Requirements
After the test, the container shall not have any permanent deformation or abnormality that affects its use, and shall meet the requirements for loading, unloading, fixing and interchange operations.
6.6.3 Test 5.2-Air Transport
6.6.3.1 Method
The container shall be fixed to the aircraft restraint system or corresponding system. The number of quick-release lock pins specified in 5.2.2 is inserted into one side of the container, and the lock pins are adjusted by appropriate methods to ensure contact with the end surface of the side lock pin socket groove. At this time, the horizontal test load R.-T is applied to the end of the container, and the test load R.-T is applied vertically to the surface of the container. Unless the end walls are the same, this test should be repeated on the opposite end face of the container. 6.6.3.2 Requirements
After the test, the container shall not have any permanent deformation or abnormality that affects its use, and shall meet the requirements for loading, unloading, fixing and interchange operations.
GB/T17770—1999
6.6.4 Test 5.3—
For air transport, only the end wall of 1D container shall be tested. 6.6.4.1 Method
The container shall be fixed to the aircraft restraint system or corresponding system, and only the front and rear end grooves shall be reinforced with restraint devices according to Figures 5 and 6.
Apply a test load of R. -T to one end of the container in the horizontal direction, and at the same time, apply a test load equivalent to R. -T vertically to the bottom of the container.
Unless the end walls are the same, the test shall be repeated on the opposite end wall of the container. 6.6.4.2 Requirements
After the test, the container shall not have permanent deformation or abnormality that affects its use, and shall meet the requirements for loading, unloading, fixing and interchange operations.
6.7 Test 6 - Side Wall Strength
6.7.1 Purpose
This test verifies the ability of the container side walls, which are secured by corner fittings or the relevant aircraft restraint system, to withstand the maximum lateral inertia forces which may be encountered during land and air transport. 6.7.2 Test 6.1 - Land/Water (Intermodal) 6.7.2.1 Method
A test load of 0.6 (R.-T) is applied horizontally to the container side walls by bolting through the bottom holes of the four corner fittings.
Unless the side walls are identical, the test shall be repeated on the opposite side walls. 6.7.2.2 Requirements
After the test, the container shall not show any permanent deformation or abnormality that would affect its use and shall meet the requirements for loading, unloading, securing and interchange operations.
6.7.3 Test 6.2—Air transport
6.7.3.1 Method
The container shall be secured to the aircraft restraint system or equivalent. According to 5.2.2 The indicated number of quick release pins shall be inserted into the side grooves equidistantly on both sides of the container and the quick release pins shall be adjusted by appropriate means to ensure vertical restraint. Apply the test load of R. -T to one side of the container in the horizontal direction. At the same time, apply the test load of RT vertically to the bottom surface of the container.
Unless the side walls are identical, the test shall be repeated on the opposite side walls. 6.7.3.2 Requirements
During the test, the maximum allowable deformation of the container top relative to the container floor shall not exceed 38mm (1.5in). After the test, the container shall not have permanent deformation or abnormality that affects its use. And it shall meet the requirements for loading, unloading, fixing and interchange operations.
6.7.4 Test 6.3--Air transport mode, only for 1D type containers 6.7.4.1 Method
The container shall be fixed to the aircraft restraint system or corresponding system. Only the front and rear end grooves shall be reinforced with restraint devices according to Figures 5 and 6.
Apply a test load of R.1T to one end of the container in the horizontal direction, and at the same time, apply a test load equivalent to R.1T vertically on the bottom surface of the container.
Unless the side walls are the same, this test should be repeated on the opposite side wall of the container. 6.7.4.2 Requirements
During the test, the maximum allowable lateral displacement of the container top relative to the container bottom plate should not exceed 38mm (1.5in). After the test, the container should not have permanent deformation or abnormality that affects its use, and should meet the requirements for loading, unloading, fixing and interchange operations. 436
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.