Series 1:Specification and testing for non-pressurized containers for dry bulk
Some standard content:
GB/T 17274—1998
This standard is formulated in accordance with the international standard ISO1496-4:1991 "Cargo Container Series 1 Standard Part 4---Technical Requirements and Test Methods for Non-pressure Dry Bulk Containers", and is equivalent to it in terms of technical content and writing rules. The difference is that this standard converts the format of the international standard into the format of the national standard in accordance with the national standard GB/T1.1-1993 "Guidelines for Standardization Work Unit 1: Rules for Drafting and Presentation of Standards Part 1: Basic Provisions for Standard Writing". Under the general title of "Series 1: Technical requirements and test methods for containers", the following six standards are included: 1) GB/T5338--1995 "Technical conditions and test methods for 1AAA, 1AA, 1A and 1AX general containers" (neqISO 1496-1:1991);
2) GB/T3219--1995 "Technical conditions and test methods for 1CC, 1C and 1CX general containers" (neg ISO 1496-1:1991);
3) GB/T7392--1998 "Series 1: Technical requirements and test methods for containers - insulated containers" (idt ISO 1496-2:1996);
4) GB/T16563-1996 "Series 1: Technical requirements and test methods for liquid, gas and pressurized dry bulk tank containers" (idt ISO 1496-3:1995);
5) GB/T17274-1998 "Series 1: Technical requirements and test methods for non-pressurized dry bulk containers" (idt ISO1496-4:1991);
6) GB/T16564-1996 "Series 1: Technical requirements and test methods for platform and platform containers" (idt ISO 1496-5:1991).
Appendix A, Appendix B, Appendix C, Appendix D and Appendix E of this standard are all appendices of the standard. Appendix F and Appendix G of this standard are both indicative appendices. 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. The drafting units of this standard are: Standard Metrology Institute of the Ministry of Transport, China International Marine Containers (Group) Co., Ltd. The main drafters of this standard are: Zhao Jiushan, Zhang Jingxuan, Qian Jin. 398
GB/T17274—1998
ISOForeword
The International Organization for Standardization (ISO) is a worldwide federation of national standardization organizations (ISO member groups) in various countries. The drafting of international standards is generally carried out through the technical committees of ISO. Each member group has the right to send representatives to participate in the technical committees of the topics they are 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 distributed to the member groups for comments before being adopted as international standards by the ISO Council. According to ISO's procedures, the approval votes in the member group vote exceed 75% to be considered passed. International Standard ISO1496-4 and Amendment 1 were drafted by the Technical Committee for Special Containers, the Second Technical Committee of the ISO/TC104 Technical Committee for Containers.
ISO1496 Series 1 Container Technical Requirements and Test Methods includes the following parts: Part 1: General purpose general cargo containers; Part 2: Insulated containers;
Part 3: Liquid, gas and pressurized dry bulk tank containers; Part 4: Unpressurized dry bulk containers;
Part 5: Platform and platform containers. Appendices A, B, C, D and E are part of the ISO1496-4 standard text, while Appendices F and E are references to the text. 399
GB/T 17274—1998
ISO1496 container technical conditions are classified as follows: Part 1:
General purpose containers
Special purpose containers
Closed breathable or ventilated
Loose top type
Part 2:
Insulated containers
Part 3:
Liquid and gas tank containers
Pressurized dry bulk tank containers
Part Part 4:
Unpressurized dry bulk container (box type)
Unpressurized dry bulk container (funnel type)
Part 5:
Platform container
Pedestal container (incomplete superstructure and with fixed end frame)Pedestal container (incomplete superstructure and with folded end frame)Pedestal container (complete superstructure) Note 1: Codes 90~99 are reserved codes for ISO8323 air/land/water intermodal containers. 400
00～09
10～19
30～49
61～62
1 Scope
National Standard of the People's Republic of China
Series 1: Non-pressurized dry bulk containersbzxz.net
Technical requirements and test methods
Series 1: Specification and testing for non-pressurized containers for dry bulk1.1 This standard specifies the technical requirements and test methods for series 1 non-pressurized dry bulk containers. GB/T 17274—1998
idt ISO 1496-4:1991
This standard applies to road, rail and water transport of this type of container and to combined transport between these modes of transport. 1.2 Due to the great differences in density and fluidity of various types of dry bulk cargoes, containers that meet this standard may not necessarily be suitable for the transport of all dry bulk cargoes. Therefore, unless otherwise specified, the requirements specified in this standard are the minimum requirements. Containers used to transport dangerous goods shall also comply with the international and domestic transport regulations formulated by the relevant competent authorities. 1.3 The types of containers covered by this standard are shown in Table 1. Table 1 Container types
Unpressurized dry bulk containers
Enclosed
Ventilated
Steam-tight
(spare)
1) Comply with ISO6346 standard.
Container type code)
Funnel type
1.4 The marking requirements for this type of container shall comply with the principles specified in ISO6346. Note 2: Although some types of containers manufactured in accordance with ISO1496-1 can meet the requirements for transporting certain unpackaged solid dry bulk cargoes, care should be taken not to exceed the design load during operation.
2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard was published, the versions shown were all valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T1835-1995 Technical conditions for corner fittings of containers GB/T 1836—1997
Container codes, identification and marking
ISO668:1995 Classification, dimensions and rated mass of containers ISO830:1981 Container terminology
Approved by the State Administration of Technical Supervision on March 20, 1998 and implemented on October 1, 1998
3 Definitions
GB/T 17274—1998
The definitions listed in IS(）830 are applicable to this standard. The definitions are as follows: 3.1 Non-pressurized dry bulk container is a container used to transport solid dry bulk cargoes and can withstand the loads generated by loading and unloading cargoes and transportation movements during the transportation of unpackaged solid dry bulk cargoes. It has loading and unloading ports and related accessories that meet the technical requirements of this standard. 3.1.1 Box type container boxtype
An unpressurized container with a rectangular cargo hold, which can be unloaded at an angle and has an opening at at least one end. 3.1.2 Hopper type container
An unpressurized container with horizontal unloading and no doors that cannot be used as a general-purpose container. Note 3: Dry bulk container is the container referred to in this standard. 3.2 Solid dry bulk cargo dry bulk solids A collection of solid bulk particles that are in contact with each other and can flow. 3.3 Openings for cargo loading Openings set on the box body for loading solid dry bulk cargoes. 3.4 Openings for cargo discharging Openings set on the box body for discharging solid dry bulk cargoes. 3.5 Interface for external fumigation device Device for connection and disconnection between container and external fumigation device. 3.6 Dangerous goods dangerous goods
Articles classified as dangerous goods by the United Nations Committee of Experts on the Transport of Dangerous Goods and the competent authorities specified in 3.7. 3.7 Competent authority An agency designated by each country or by the government in specific circumstances. 3.8 Bulk density bulk density
The mass of dry bulk goods per unit volume measured when the dry bulk goods are loose or uncompacted. 3.9 Cargo space
The space enclosed by the container wall or shell when the openings are in a closed state. 4 Dimensions and rated mass
4.1 External dimensions
The external dimensions and tolerances of the containers listed in this standard have been specified in ISO668. However, the height of the containers of types 1AX, 1BX, 1CX and 1DX can be reduced.
Any part and various accessories of the container shall not exceed the external dimensions. 4.2 Internal dimensions
The internal dimensions of the container should be as large as possible, but in any case, the minimum internal width of 1AAA, 1AA, 1A, 1BBB, 1BB, 1B, 1CC, 1C and 1D box containers (box code 20~24) is 2330mml. This is the dimension measured at a temperature of 20℃, and the values measured at other temperatures should be adjusted accordingly. 4.3 Rated mass
The rated value \R" is the maximum total mass of the container, which is specified in ISO668. However, the rated value "R" of 1BBB, 1BB, 1B, 1CC and 1C tank containers can be designed and tested according to higher density cargoes, and it can be higher than the value specified in ISO668. For all containers, in any case, the R value shall not exceed the rated value of 1AAA, 1AA and 1A containers specified in ISO6681) 2 330 mm=91 34 in.
Fixed value.
5 Design requirements
5.1 General
All types of containers should meet the following requirements. GB/T17274—1998
5.1.1 The strength requirements of containers are detailed in the diagrams listed in Appendix A (Appendix to the standard) (unless otherwise specified, these requirements apply to all non-pressurized dry bulk containers).
This requirement is for the container as a whole, that is, all removable movable parts should be in place according to the operating conditions. 5.1.2 The strength requirements of corner fittings (see 5.2) have been specified in GB/T1835. 5.1.3 The container should be able to withstand Various loads and loadings listed in Chapter 6 of this standard. 5.1.4 The impact of the impact load under any dynamic situation should be close to but not exceed the impact of the test load. That is, it should not exceed the working conditions shown in Appendix A (Appendix to the standard) and Chapter 6. 5.1.5 Any opening and closing device of the container that may cause danger if not fastened should be equipped with corresponding fastening devices, and positioning marks indicating fastening should be set on the surface of its operating position. It should be noted that the door and loading and unloading port should be equipped with facilities to fix them in the open or closed position. 5.1.6 Any movable top position of the container should be equipped with a locking device. The locking device should be easy to check so that the staff standing on the ground can check whether it is in the open or closed position. The firmness of the top of the container on a railway vehicle or road vehicle. 5.1.7 All containers shall meet the watertightness requirements listed in Test 13 (see 6.14). 5.2 Corner fittings
5.2.1 General
All types of containers shall be equipped with top corner fittings and bottom corner fittings. The requirements for corner fittings and their locations shall comply with the provisions of GB/T1835. The top surface of the top corner fitting shall be at least 6mm2 higher than the top of the box (see 5.3.4). "Container top" refers to the highest point on the top of the container, such as the highest point of the locking position of the loading port. 5.2.2 Reinforcement plates and composite plates
Top reinforcement plates or composite plates set near the top corner fittings to protect the top of the box. The plate and its fixings shall not extend beyond the top surface of the top corner fittings. The dimension of the plate along the length of the container measured from the end shall not exceed 750mm, but there is no restriction along the width of the container. 5.3 Bottom structure
5.3.1 All types of containers shall be capable of being supported only by their bottom corner fittings. 5.3.2 All types of containers except 1D and 1DX shall also be capable of bearing loads only by the load transfer area of their bottom structure. 5.3.2.1 In order to ensure that the vertical load between the container and the longitudinal beam of the transport vehicle can be transferred, it should be considered to set the longitudinal beam of the vehicle with sufficient strength to be limited to the two 250mm2 bandwidth areas shown by the dotted line in Figure B1. 5.3.2.2 The bottom surface of the load transfer area, including the plane formed by the bottom surface of the end cross dye, shall be 12.55., mm2 higher than the bottom surface of the bottom corner fittings of the container. Except for the bottom corner fittings and the lower side beams, no part of the container shall be lower than this plane. The doubler near the bottom corner fittings plays a protective role for the bottom structure of the container. The distance between the double plate and the outer end of the bottom corner fitting shall not exceed 550mm, and the distance from the side of the bottom corner fitting shall not exceed 470mm. Its bottom plane shall be at least 5mm2 higher than the bottom surface of the bottom corner fitting of the container.
5.3.2.3 For the lower side beam, the load transfer between its bottom surface and the transport vehicle is not considered. The load transfer between the lower side beam and the loading and unloading equipment is considered only when the operation is carried out in accordance with the provisions of 5.10.1 and 5.10.2. 5.3.2.4 When the spacing between the bottom beams of the container is equal to or less than 1000mm2 (or the bottom of the container is flat), it shall comply with the requirements of 5.3.2.1. 5.3.2.5 When the spacing between the bottom beams exceeds 1000mm2 (and the case of non-flat bottom), the requirements are shown in Appendix B (Standard Appendix). 5.3.3 Except for the case of 5.3.4, no specific provisions are made for the bottom plate of the bottom structure of 1D and 1DX containers. 2) 5mm=3/16 in; 6mm=1/4 in:12. 5f., mm=1/2+/g in; 250mm=10 in: 470mm=18/ in, 550mm= 22 in; 750mm=29/in; 1000mm=39%in.
GB/T 17274—1998
5.3.4 In the dynamic or corresponding static conditions, that is, when the sum of the total mass of the container and the test load is equal to 1.8R and is evenly applied to the bottom plate, the deformation of any part of the bottom of the container shall not be less than 6mm3 below the bottom surface (bottom plane) of the bottom corner piece. 5.4 End structure
For all types of containers except 1D and 1DX, when conducting the overall lateral rigidity test, the sum of the changes in the length of the two diagonals caused by the lateral displacement of the top relative to the bottom shall not exceed 60mm. 5.5 Side structure
For all types of containers except 1D and 1DX, the longitudinal displacement of the top relative to the bottom shall not exceed 25 mm during the overall longitudinal rigidity test.
5.6 Wall panels (box-type structure)
5.6.1 During the overall side wall test of all types of containers, the relative displacement of the side wall relative to the outer surface of the four corner fittings on each side shall be as small as possible and shall not exceed 40 mm\.
5.6.2 End walls or side wall panels with openings shall have the ability to withstand tests 5 and 6 (see 6.6 and 6.7) without damage. 5.7 Shell (funnel-type structure)
5.7.1 The shell of a funnel-type container shall be designed to withstand the inertia forces generated by the cargo in the container during transportation as much as possible. In the design, inertia forces equivalent to 2Rg in the longitudinal direction, Rg in the transverse direction, and 2Rg in the vertical direction shall be considered. These loads can be considered as separate uniformly distributed loads and act through the geometric center of the shell surface. The total vertical load also includes the dynamic load effect.
5.7.2 The shell of the funnel-type container should be able to meet the requirements of 5.7.1 and withstand the static pressure of the rated mass R, and the density of the cargo in each compartment in the box is considered to be the maximum value. During the internal transverse fixed full load test, the relative displacement of any part of the box relative to the plane formed by the surfaces of the four corner pieces on each side should be as small as possible and not exceed 50mm.
5.8 Openings
5.8.1 General
Each opening of the box should be designed to ensure that no material leaks out when closed. 5.8.2 Door opening (box-type structure)
Box-type containers should be provided with an opening at least at one end so that they can be used as general cargo containers. 1A, 1B, 1C and 1D box-type dry bulk containers should be provided with a door opening, the size of which should preferably be equal to the internal cross-section of the container, and in any case, its height should not be less than 2134mm2 and its width should not be less than 2286mm. 1AAA, 1AA, 1BBB, 1BB and 1CC box-type dry bulk containers should be provided with a door opening, the size of which should preferably be equal to the internal cross-section of the container, and in any case, its height should not be less than 2261mm and its width should not be less than 2286mm. Note 4: For typical examples of loading ports for 1AAA, 1AA, 1BBB, 1BB, 1CC and 1C box-type containers, see Appendix F. 5.8.3 Loading ports
Each type of dry bulk container should be equipped with one or more loading ports, and the design requirements are as follows: - Solid dry bulk cargo can be loaded into the container by its own weight or other means and properly distributed, and no internal pressure can be generated in the cargo hold due to empty cargo space;
- Comply with other additional regulations of the competent authorities. 5.8.4 Unloading ports
Each type of container should be equipped with at least one unloading port. When designing and positioning, consideration should be given to emptying the cargo by its own weight or other means that will not generate positive or negative pressure due to empty cargo space, or to achieve this goal through a combination of several methods. Where the container is unloaded by tilting, the unloading 3) 6 mm = 1/4 in; 25 mm-1 in; 40 mm = 1% 6 in; 50 mm = 2 in; 60 mm = 2% in; 2 134 mm = 7 ft; 2 261 mm = 7 ft 5 int2 286 mm = 7 ft 6 in. 4) See Note 5 in 6.1.1.
The opening shall be of sufficient size to ensure that the cargo is unloaded. 5.8.5 Inspection and maintenance opening (funnel structure) GB/T 17274--1998
5.8.5.1 Unless otherwise exempted by the competent authority, a hopper-type dry bulk container shall be provided with a manhole or inspection hole to enable a comprehensive inspection of the interior. The minimum diameter of the manhole is 500 mms. The specific size may be determined based on the inspection personnel or the equipment they carry to pass through and conduct inspection and maintenance in it, and the requirements of the competent authority shall also be considered.
5.8.5.2 When the dimensions of the loading and unloading openings already comply with the provisions of 5.8.5.1, no other openings may be required. 5.9 Structure
5.9.1 The materials used for the container structure shall be suitable for the cargo or sufficiently suitable for the environment in which the container is transported. At the same time, changes in ambient temperature, atmospheric corrosion, and uncontrolled escape during fire shall be considered. If necessary, consideration should be given to selecting materials with corrosion resistance. 5.9.2 The shell of each hopper container shall be fastened to the container frame. 5.9.3 Customs sealing devices shall be installed on the container in accordance with international customs conventions. 5.9.4 The manufacture of dry bulk containers coded as Type 23 and Type 83 shall meet the airtightness requirements of Test 18 (see 6.19). 5.10 Optional Facilities
5.10.1 Fork pockets
5.10.1.1 Fork pockets may be provided on 1CC, 1CX, 1D and 1DX containers to facilitate forklifting of loaded and empty containers. Fork pockets are not provided on 1AAA, 1AA, 1A, 1AX, 1BBB, 1BB, 1B and 1BX containers. 5.10.1.2 A second pair of fork pockets may be provided on 1CC, 1C and 1CX containers for forklifting empty containers, provided that the requirements of 5.10.1.1 are met.
5.10.1.3 Where fork pockets are provided, their dimensions shall comply with the requirements of Appendix C (Standard Appendix) and the fork pockets shall penetrate the bottom structure of the container so that a forklift can be inserted from either side. The fork pocket base does not have to occupy the full width of the container and only needs to be near the ends of the fork pockets. 5.10.2 Wall grabbing or similar devices
Facilities for wall grabbing or similar devices to load and unload various types of containers can be set up. For the size requirements, please refer to Appendix D (Standard Appendix). 5.10.3 Gooseneck slot
1AAA type containers must be equipped with gooseneck slots, and 1AA, 1A and 1AX type containers can be equipped with optional ones. For the size requirements, please refer to Appendix E. In addition, if there are other structures on the bottom of the container, they should comply with the provisions of 5.3. 5.10.4 Walkway
The walkway should be designed to withstand a uniform load of 300kg on an area of 600mm×300mm. 5.10.5 Escalator
Escalators are designed to withstand a load of 200kg5 per step. 5.10.6 Fumigation interface
A device for connecting to external fumigation equipment can be set up. 5.10.7 Sanitary facilities (considered when necessary) 5.10.7.1 The structural materials of the selected container should prevent adverse effects on the cargo. Sanitary facilities should comply with international or national and competent authorities' requirements. 5.10.7.2 The inner surface of the container should be easy to clean thoroughly and should not hinder the use of wet steam and detergents for cleaning operations. 5.10.7.3 The inner surface structure of the container should not have cracks or unsealed seams to prevent the formation of infection sources. 6 Tests
6.1 General
Containers that meet the design requirements specified in Chapter 5 should be subjected to the tests listed in 6.2 to 6.19 according to their designed conditions of use, unless otherwise specified.
5) 500mm=20in; 600mmX300mm=24in×12in; 300kg=660lb; 200kg=440lb. 405
GB/T 17274—1998
The watertight test (test 13) shall be carried out after the completion of the structural tests 1 to 12, 14, 15 and 16. If otherwise required, the airtight test 18 shall be carried out last.
In addition, containers for the transport of dangerous goods shall also comply with the relevant test requirements specified by the competent authorities. 6.1.1 The symbol "P" indicates the maximum load of the container, that is: PRT
Where: R——rated mass;
empty container mass,
Note 5: R, P and T in the definition are all mass concepts. If the test requirements are based on gravity values, the expression of these "inertial forces" should be: Rg, Pg, TgThe units of the above values are Newton or kilonewton. The word "load" is a mass concept when used to express unit quantity. "The term loading is used for internal loading, which is a force concept. 6.1.2 The load or loading of the internal test of the container shall be uniformly distributed. Unless otherwise specified, the hopper-type container shall be tested under the condition of being loaded with the corresponding liquid or solid bulk cargo to achieve the specified test load and loading requirements.
If the test load or loading requirements cannot be achieved by the above method, or the method itself is not ideal, it may be considered to add additional loads or loading while loading the corresponding liquid or solid bulk cargo. All applied loads or loadings are simulated as uniformly distributed loads. A 20% error is allowed in the calculated bending moment value of the hopper-type container. Note 6: As long as the specified test load can be achieved, other loading and loading methods are also feasible (for example: internal longitudinal and transverse controlled solid tests). 6.1.3 The test loads and loadings specified in the following tests are minimum requirements. 6.1.4 The dimensions required in each test clause shall take into account the following standards. a) Dimensions and design requirements in Chapters 4 and 5 of this standard; b) ISO 668;
c) GB/T 1835.
6.2 Test 1 - Stacking Test
6.2.1 General
This test verifies the load-bearing capacity of fully loaded containers when stacking is skewed under ocean vessel transportation conditions. Table 2 specifies the force applied to each diagonal piece and the stacking mass expressed in the test. Table 2 Stacking test force
Test force for each container
(force applied to four corners at the same time)
Container model
1AAA, 1AA.IA and 1AX
1BBB, 1BB, 1B and 1BX
1CC, 1C and 1CX
1D and 1DX
(kN)
(lbf)
763200
763200
763200
201600
Test force for each pair of end angle fittings
(kN)
(lbf)
381600
381600
381600
100800
Expressed as test force
Stacking quality Quantity
(kg)
192000
192000
192000
(lbs)
423320
423320
423320
112000
Note: The test force value of 3392kN per box is obtained by stacking nine layers (8 boxes stacked on top of one box), the rated value of each box is -24000kg, and the acceleration is 1.8g, that is, the force value of each corner column of this type of container is 86400kg (1904801b). 6.2.2 Method
The container under test should be placed on four equal-level pads, with one pad under each corner fitting. The pads should be aligned with the corner fittings and their plane dimensions should be the same as those of the corner fittings. The load inside the container shall be evenly distributed on the bottom plate so that the sum of its deadweight and the test load is equal to 1.8R. 406
GB/T 17274—1998
Vertical force shall be applied simultaneously to the four corner fittings of the container or to a pair of corner fittings at the ends of the container. The test force values are detailed in Table 2. The force shall be applied through corner fittings specified in GB/T1835 or dummy fittings with the same geometry (i.e., the same external dimensions, chamfers of openings and radii of peripheral corners). If dummy fittings are used, their design must ensure that the force borne by the container during the test is the same as when corner fittings are used.
The various loading methods shall minimize the angular displacement between the surface of force application and the surface of the container subjected to force. Each corner fitting or dummy fitting shall be offset in the same direction, 25.4mm in the horizontal direction and 38mm in the vertical direction. 6.2.3 Requirements
After the test, the container shall not have any permanent deformation or abnormality that affects normal use, and its size shall still meet the requirements of loading, unloading, fastening and transshipment operations.
6.3 Test 2 - Lifting test by four top corner fittings 6.3.1 General
This test is to verify the ability of all types of containers other than 1D and 1DX containers to withstand vertical lifting by four top corner fittings. And the ability of 1D and 1DX containers to withstand lifting at any angle within 60° between the vertical and the horizontal. This is the only recognized method for lifting such containers by four top corner fittings. This test can also be used as a test to verify the various forces generated by the load inside the container under the acceleration of the lifting operation on the bottom plate and the bottom structure of the container.
6.3.2 Method
The container load shall be evenly distributed on the bottom plate, and its deadweight and the test load shall be equal to 2R. Then, lift it smoothly from the four top corner fittings at the same time to avoid obvious acceleration.
The lifting force for all types of containers except 1D and 1DX should be vertical. Each rope used to lift 1D and 1DX containers should be at an angle of 60° to the horizontal. Suspend the container for 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 normal use, and its size should still meet the requirements of loading, unloading, fastening and transshipment operations.
6.4 Test 3 - Lifting test with four bottom corner fittings 6.4.1 General
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
The load in the container should be evenly distributed on the bottom plate, and 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 angles of the lifting force are as follows:
The lifting force line of 1AAA1AA, 1A and 1AX containers is at an angle of 30° to the horizontal. The lifting force line of 1BBB, 1BB, 1B and 1BX containers is at an angle of 37° to the horizontal. The lifting force line of 1CC, 1C and 1CX containers is at an angle of 45° to the horizontal. The lifting force line of 1D and 1DX containers is at an angle of 60° to the horizontal. In any case, the distance between the lifting force line and the outer side of the corner fitting should not be greater than 38mm, and the lifting device should be connected to the four bottom corner fittings during lifting.
Hang the container for 5 minutes and then put it on the ground. 6.4.3 Requirements
6) 25. 4 mm=1 in;38 mm=1/ in 407
GB/T17274—1998
After the test, the container shall not have any permanent deformation or abnormality that affects normal use, and its size shall still meet the requirements of loading, unloading, fastening and transshipment operations.
6.5 Test 4~—External longitudinal fastening test
6. 5.1 General
This test verifies the ability of the container to withstand the action of external longitudinal fastening under the dynamic conditions of railway driving, that is, when the acceleration is equivalent to 2g.
6.5.2 Method
The load of the container shall be evenly distributed on the bottom plate, and the sum of its deadweight and load shall be equal to R. The container shall be fastened to the rigid fixing through the two bottom holes of the bottom corner fittings at one end.
Apply a horizontal force of 2Rg to the container through the bottom holes of the two bottom corner fittings at the other end, first toward the fixings and then in the opposite direction. 6.5.3 Requirements
After the test, the container shall not show any permanent deformation or abnormality that affects normal use, and its size shall still meet the requirements of loading and unloading, fastening and transshipment operations.
6.6 Test 5 - End wall strength test (box-type structure) 6.6.1 General
This test verifies the ability of the container to withstand the dynamic loads listed in 6.5.1. 6.6.2 Method
When one end of the container is closed and the other end has an opening, each end must be tested. If the structure is symmetrical, only one end may be tested.
The internal load of the container shall be:
0.4Pg for 1AAA, 1AA, 1A, 1AX, 1BBB, 1BB, 1B and 1BX containers: 0.6Pg for 1CC, 1C, 1CX, 1D and 1DX containers; the internal load shall be evenly distributed on the container wall, and the container wall is allowed to deform freely. 6.6.3 Requirements
After the test, the container shall not have any permanent deformation or abnormality that affects normal use, and its size shall still meet the requirements of loading and unloading, fastening and transshipment operations.
6. 7 Test 6---1
Side wall strength test (box structure)
6.7.1 General
This test is to verify the ability of the container to withstand various forces caused by the ship's navigation. 6.7.2 Method
The two sides of the container shall be tested separately. If the structure is symmetrical, only one side may be tested. Each side wall of the container shall bear an internal load of 0.6Pg. The internal load shall be evenly distributed and applied to one side wall at a time. The side wall and the longitudinal members are allowed to deform freely. 6.7.3 Requirements
After the test, the container shall not have any permanent deformation or abnormality that affects normal use, and its size shall still meet the requirements of loading, unloading, fastening and transshipment operations.
6.8 Test 7 - Top strength test (performed when the top plate is installed) 6.8.1 Summary
This test is to verify the ability of the rigid top plate to withstand the load caused by the workers working on it. 6.8.2 Method
The 300kg load is evenly distributed on the weakest area of 600mm×300mm in the rigid top plate structure for testing. 6.8.3 Requirements
7) 300kg=660lb; 600mm×300mm=24in×12in. 408
GB/T17274—1998
After the test, the container shall not have any permanent deformation or abnormality that affects normal use, and its size shall still meet the requirements of loading, fastening and reloading operations.
6.9 Test 8-Bottom Plate Strength Test (Box Structure) 6.9.1 General
This test verifies the ability of the container bottom plate to withstand the concentrated load of loading vehicles or similar equipment during loading and unloading operations. 6.9.2 Method
A tire vehicle is used for the test. The rear axle load is 5460kg (i.e. 2730kg per wheel), the pressure area of each wheel is within the rectangular area formed by 185mm (parallel to the wheel axle) × 100mm, the contact area between each tire and the bottom plate shall not exceed 142cm28, the tire width is 180mm, and the wheelbase is 760mm. During the test, the four bottom corner pieces of the container are supported by the supports on the same horizontal plane, and the bottom structure of the container can deform freely. At this time, the test vehicle reciprocates on the bottom plate of the container. 6.9.3 Requirements
After the test, the container shall not have any permanent deformation or abnormality that affects normal use, and its size shall still meet the requirements of loading and unloading, fastening and reloading operations.
6.10 Test 9—Transverse rigidity test
6.10.1 General
This test is to verify the ability of various types of containers, except 1D and 1DX, to withstand the transverse torsion force generated during the voyage of the ship. 6.10.2 Method
The container is in the empty (T) state, with its four bottom corner fittings placed on four supports at the same level, and is fastened in the transverse and vertical directions through the bottom holes of the four bottom corner fittings by means of fixing devices. The transverse fastening is only provided on the bottom corner fittings on the diagonal line of the same end of the top corner fittings. When the first end is tested separately, the vertical fastening is only provided at one end of the test box. A force of 150 kN is applied to the two top corner fittings on one side of the container separately or simultaneously, with the line of action of the force being parallel to the bottom structure and end wall of the container, first toward the top corner fittings, and then in the opposite direction. If the two end walls of the container have the same structure, only one end needs to be tested; if the end wall structure of the container is asymmetrical to its vertical axis, both sides should be tested.
The allowable deformation of the full load test is specified in 5.4. 6.10.3 Requirements
After the test, the container shall not have any permanent deformation or abnormality that affects normal use, and its size shall still meet the requirements of loading and unloading, fastening and transshipment operations.
6.11 Test 10--Longitudinal rigidity test
6.11.1 General
This test is to verify the ability of various types of containers except 1D and 1DX to withstand the longitudinal torsional force generated during the voyage of the ship. 6.11.2 Method
The container is in the empty box (T) state, with its four bottom corner fittings placed on four supports at the same level, and is fastened in the longitudinal and vertical directions through the bottom holes of the four bottom corner fittings by means of fixing devices. The longitudinal fastening is only provided on the bottom corner fittings on the diagonal line of the same end of the force-applying top corner fitting.
Apply a force of 75kN8 to the two top corner fittings on one side of the container separately or simultaneously. The line of action of the force is parallel to the bottom structure and side wall of the container, first toward the top corner fittings, and then in the opposite direction. If the two side walls of the container have the same structure, only one side needs to be tested; if the side wall structure of the container is asymmetrical about its vertical axis, both sides should be tested.
The allowable deformation of the full load test is specified in 5.5. 8) 5 460 kg=12 000 lb;185 mmX100 mm=-7 in×X4 in:142 cm2=22 in2;180 mm=7in;760 mm=30 in;150 kN=33700 bf,75kN=16850 1bf.
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