Some standard content:
ECS_47.020.50
National Standard of the People's Republic of China
GB/T4446—1995
Mooring winches
Published on 1995-11-20
National Technical Supervision Bureau
Implementation on 1996-08-01
National Standard of the People's Republic of China
Mooring winches
Mouring winches
This standard adopts 1S0373 (3.1 theme and applicable scope) 4446-1955
ECB446--84
This standard specifies the classification, technical requirements, test methods, inspection rules and markings of marine electric and hydraulic driven automatic and non-automatic winches, installation, transportation and abandonment. This standard is applicable to marine winches of the same level. 2 Reference standards
GB3933 Deck winch name list
G[739) Super winch appearance||tt ||CB4311 Trigger Recovery Product Model and Method 3 Terminology
In addition to the relevant terms specified in GD383, the special terms are specified as follows: 3.1 Reel Load
The maximum vertical force measured at the point where the rope leaves the reel when the rope is reeled in at the speed of the ring (see 3.6) under the condition of the reel.
3.2 Support Load
The maximum tension that can be maintained by the brake lock installed on the shear rope. 3.3 Uncontrolled Load
The maximum tension that can be obtained when the rope changes direction when the motor is rotated in a certain direction under the condition of large torque and compensation for the difference in width of the single-layer rope.
3.2 The maximum pull measured at the point where the rope leaves the drawbar when the motor is under the condition of a single reverse rope and the start of the automatic retraction of the rope. This is only applicable to automatic mooring winches. 3.5 The maximum pull measured at the point where the rope leaves the drawbar when the motor is under the condition of a single reverse rope and the start of the automatic retraction of the rope. This is only applicable to automatic mooring winches. 3.6 The maximum rope speed that the winch can maintain when the winch is under the load of the drum (without 3.1). 3.7 The maximum rope speed that the winch can maintain when the winch is under the condition of a single rope and there is no tension on the rope. 3.8 Travel speed
National Technical Supervision Bureau 19951120 approval
1996-08-01 implementation
GR/T4446-1995
The minimum average speed that a moored crane can sustain under the conditions of the first floor under the port load. 4 Product classification
4.1 Type
According to different installation methods, moored cranes are divided into right-hand type and right-hand type. 4.1.1 Platform winch, when the speed controller is in the prime mover position (symmetrical winch) - reverse, if the deceleration plate load carrier is on the right side of the reel, it is called a right-hand test car (see Figure 1). 4.1.2 In a symmetrical winch, when the primary drive control is reversed (symmetrical winch), if the reduction device or the driving device of the winch is on the left side of the winch, it is called a left winch. 4.2 Basic parameters see reference 1. Nominal speed, integral speed, design group. 55 G, FE Figure 1. The minimum knock and interruption of the load recovery and the support load recovery are free of charge. The winding and the winch are filled in the theory and safety of the winch. The normal tolerance and the use of manual control breakers, etc. are also required. 2! It is suitable for heart control vehicles,
C0/T4446-1995
3) The tensile strength of the pin wire in the table is [26/mm
4.3 The nominal specification of the final vehicle should be in the small specification book of the manufacturer and the public silicon Hui. 4.4 Marking
4.1.1 Composition of marking
Product name
4.4.2 Certification and price
Accuracy
Nominal specification 1See 4.2)
FY—right-hand type
Model code
Special code
Drive type code (see CB3311)
Reduced pressure drive, cylinder load is %kN, nominal speed 0.25/right-hand type hydraulic section car, hydraulic section car YRY-81/0.25G8/T4446--11955 Technical requirements
5.1 Function of hydraulic section car
The hydraulic section car has the function of collecting, maintaining and storing rope elements on the cylinder. This winch can be used to winch (both Table 2)..Table 2 Functional value of the brake maintaining tension in non-automatic parking. 5.2 Performance 5.2.1 Load on the roll shall not be less than 33% of the designed breaking load when running at the corresponding nominal speed. 5.2.2 Support load The support value shall be less than % of the designed breaking load. 5.2.3 Recovery load The recovery load shall not be less than 5U of the roll load. 5.2.4 Release load
GA/T4446—1995
The release load shall not exceed 50% of the designed load. 5.2.5 Automatic recovery speed
The maximum speed of the automatic winch for recovering and releasing the first rope during automatic operation shall not exceed the speed specified in the following table 1. 5.2.6 Automatic control speed adjustment
5.2.6.1 The automatic control speed winch shall realize the preset smaller release load and call collection: 5.2.6.2 For the automatic mooring winch prime mover with no adjustment before, the maximum automatic control torque to the minimum automatic control torque should be able to be reversed.
5.2.6.3 For the automatic mooring winch with digital adjustment, there should be 2 gears or more than 2 gears, and the forward and reverse sweep intervals should be easy to convert. 5.3 Release and
5.3.1 Solution
5.3.1.1 When the design is required, the tensile strength of the steel wire with 1521lN/mm and 167N/mm (6×24, 6×37) can be used. The coil economy can use synthetic single or other types of screen systems. 5.3.1.2 The coil diameter shall meet the following requirements: (For some ropes, the total coil diameter shall not be less than 16 times the design age. For some polyamide ropes, the core diameter of the old coil shall be less than 5 times the design core diameter. For some acrylic ropes, the core diameter of the coil shall not be less than 4 times the design diameter of the rope. 5.3.1.3 The length of the coil shall meet the following requirements: The total length of the rope shall not be less than 5 hours. . The total length of the coiler that can carry people should not exceed 8 layers. In order to extend the service life of the pure rope, the load on the coiler should not exceed 4 layers. The double-layered rope can be divided into normal wearing and wearing. The shortest design rope for the coiler is shown in Table 1. The main coiler rope length should be twice the normal coiler capacity. 2.3.1.5 The bottom diameter of the coiler will be required! When the whole rope is laid around the wire, the height of the outer rope should not be less than 1 times of the rope's diameter; the large capacity voucher should be designed so that all ends of the rope are stored on the coil and the outer rope cannot be completely laid. Therefore, the timing of each layer should be consistent with the rope, and no half of the rope diameter should be deviated between two adjacent layers. 5.3.2 Control brake device
The electric mooring vehicle must be equipped with an automatic control brake device. When the three vehicles are operated or the wheels are moved to the stop position, the system will be in place: For vehicles with other driving modes, the braking device shall be used to control the braking effect. The brake must be able to withstand 1.5 times the load of the roll. It can also stop the roll at a high speed without causing an accident. For vehicles with other driving modes, the braking device with a brake shall be used as agreed upon by the parties. The braking device shall also withstand 1.5 times the load of the roll. 5.3.3 Braking device
Each vehicle shall be equipped with a brake device capable of withstanding the load specified in 5.2.2. 5.3.4 The driving force of the handwheel valve must be marked with obvious permanent marks. When the handwheel valve is turned or the puller is pulled in step by step, it is called rope release. Unless the manufacturer has an agreement with the relevant departments, no matter what kind of power is used, when it is manually controlled, the handwheel should be able to automatically return to the braking and storage position. 5.3.5 Clutches In mooring winches equipped with simple or double clutches, some clutches should be installed between the drive device and the reel. 4
5.3.6 Terminal
GB/T4446:1995
The cable car can be set up without five cable systems. The cable car appearance should meet the requirements of G7C. The cable car should be selected according to 1 or 5.3.1.3.
5.3.7 Cable arrangement
If the ordering party proposes, an automatic cable arrangement can be installed on the car: 5.3. Cable car with cable guide F
If the ordering party proposes. The car can be equipped with a fiber optic cable rate guide device. 5.4 Strength
5.4.1 When calculating the stress of transmission equipment and other energy-affected parts based on the constant torque of the source, the stress of the affected parts shall not exceed 4% of the material service limit.
5.4.2 When the original machine is used at the maximum single thrust under severe working conditions, the calculated stress of the affected parts shall not exceed gn. of the material service limit. bZxz.net
5.4.3 When the line car is operating under supported load, the calculated stress of the affected parts shall not exceed 0% of the material function limit. 6 Test methods
6.1 No-load test
The mooring system runs continuously for 30 minutes at a speed not less than the nominal load, the electric winch runs for 5 minutes in both directions, the gear shift is changed, each turn is 5 minutes, and the pressure relief is 30 minutes. The winch runs in both directions at the most stable speed for 5 minutes. 6.2 Load test
The winch runs continuously for 30 minutes under the load. 6.3 Support load test
When the winch is under the load, the winch cannot be turned out. If the cargo party and the manufacturer cooperate, this test can be run on the ship.
6.4 Control driver monitoring test
Carry out the load test specified in 5.3.2. The electric vehicle should start immediately. For the vehicle driven by the electric motor, there should be a certain slippage. The slippage per minute should not exceed 1.6.5 Automatic control test
The automatic control device should be tested for reverse adjustment, load collection and load collection. 5.6 Initial inspection item E
6.6-1 In the empty room, for a long time, the current under the load should not exceed the rated current of the electric vehicle.
6.6.2 Check the speed of the reel under load. The lower speed should meet the requirements of Table 1. 6.6.3 Check the temperature of the liquid or liquid reducer. Check whether the system has oil leakage. 6.6.4
Check the minimum stable speed of the reel. The minimum stable speed should meet the requirements of Table 1. 6.6.5
Check the oil pressure of the main pump under no-load and load. 6.6.6 Check whether the system is running smoothly. Check whether there is any noise. 6.6.7 Check whether the brake control (handwheel) is easy to operate. 6.6.8 Check whether the brake control and reel are safe and reliable. 6.6.9
Check and test whether the reel is reeled in and released. The reeling rope is reeled in and released. 7.1 Factory inspection Factory inspection The factory inspection meets the following requirements: G8/T44461995, according to 6.1, carry out normal load test, and the relevant provisions of 6.6.1, 6.6.3 and 6.6.5. 1. According to 6.5., the brake device and clutch are tested for positive operation. 2. Type test inspection 7.2.1 The following two tests need to be carried out for type inspection: a. New product test: 2% of the production batch is inspected, according to 7.2.2, 1--6. If the equipment items are subjected to type test, then the inspection items are in accordance with 6.1~6.6.8. Automatic mooring should add 6.6.9 system control test items.
&Marking, packaging, transportation and storage
61 The system certification vehicle that can meet this standard should be marked with the following content permanently: Product name:
6. Product model:
Inspection printing:
Manufacturer name
8.2 The components of the system should also be reliable, and the packaging should be stable. The production process should be stable and have measures to prevent separation from the ground and moisture. The product should be stored in a dry and ventilated place.
Additional instructions:
This standard is proposed by China Export Corporation.
This standard is under the jurisdiction of the National Technical Committee for Standardization of Deck Machinery: This standard was drafted by the Seventh Research Institute of China Shipbuilding Industry Corporation and Shanghai Qixin Research and Design Institute, and participated by Ningguo Shipbuilding Industry Corporation.
The main drafters of the standard are Zhong Taizong, Xu Nichu, and Zhou XiahuaIf the equipment is subjected to type test, the inspection items shall be in accordance with the provisions of 6.1~6.6.8. For automatic mooring, the inspection items of 6.6.9 shall be added.
&Marking, packaging, transportation and storage
61 The products that meet this standard shall be marked with the following contents permanently: Product name:
6. Product model:
Inspection printing:
Manufacturer name
8.2 The parts of the vehicle shall also be reliable, and the packaging shall be stable during production and have measures to prevent separation from the ground and moisture. The product shall be stored in a dry and ventilated place.
Additional instructions:
This standard is proposed by China Export Corporation.
This standard is under the jurisdiction of the National Technical Committee for Standardization of Deck Machinery: This standard was drafted by the Seventh Research Institute of China Shipbuilding Industry Corporation and Shanghai Qixin Research and Design Institute, and participated by Ningguo Shipbuilding Industry Corporation.
The main drafters of the standard are Zhong Taizong, Xu Nichu, and Zhou XiahuaIf the equipment is subjected to type test, the inspection items shall be in accordance with the provisions of 6.1~6.6.8. For automatic mooring, the inspection items of 6.6.9 shall be added.
&Marking, packaging, transportation and storage
61 The products that meet this standard shall be marked with the following contents permanently: Product name:
6. Product model:
Inspection printing:
Manufacturer name
8.2 The parts of the vehicle shall also be reliable, and the packaging shall be stable during production and have measures to prevent separation from the ground and moisture. The product shall be stored in a dry and ventilated place.
Additional instructions:
This standard is proposed by China Export Corporation.
This standard is under the jurisdiction of the National Technical Committee for Standardization of Deck Machinery: This standard was drafted by the Seventh Research Institute of China Shipbuilding Industry Corporation and Shanghai Qixin Research and Design Institute, and participated by Ningguo Shipbuilding Industry Corporation.
The main drafters of the standard are Zhong Taizong, Xu Nichu, and Zhou Xiahua
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