JT/T 1272-2019Technical requirements and testing methods for intermodal swap body (English PDF)

Foreword

This standard is in accordance with GB/T Draft the rules given in 1-2009.

This standard is proposed and managed by the National Comprehensive Transportation Standardization Technical Committee.

This standard was drafted. CIMC Vehicles (Shandong) Co., Ltd., Scientific Research Institute of the Ministry of Transport.

1 Scope

This standard specifies the technical requirements and test methods for multimodal transport exchange boxes.

This standard applies to the production, inspection, and use of C-type multimodal interchange boxes. Other types of multimodal interchange boxes can be referred to.

2 Normative references

The following documents are essential for the application of this document. For dated references, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document.

GB/T 1835 Series 1 Container Corner GB/T.1992 Container Terminology GB/T 12673 Measuring methods for main dimensions of automobiles GB/T 12674 Automobile mass (weight) parameter determination method JT/T 1092 Terminology for multimodal transport of goods JT/T 1195 Intermodal Exchange Box Identification

3 Terms and definitions

The terms and definitions defined in GB/T.1992, JT/T 1092 and the following apply to this document. For ease of use, the following is repeated Some terms and definitions in GB/T.1992 and JT/T 1092.

Swap box swap body

A standardized cargo box equipped with foldable legs, which can be separated from the truck, and is placed on the ground independently with the legs as a support.

[JT/T 1092-2016, definition 3. 3] 3. 2 Gripper gripe Located on the lower side beam of the exchange box, it is convenient to use the grab arm to lift and carry the groove of the exchange box.

Guide groove guide

It is located at the bottom of the exchange box, penetrates the entire bottom plate longitudinally, and the guide surface is free of obstacles.

Front stop block stop A metal part located in the center of the lower part of the outside of the front wall of the exchange box.

3. Five

Outfit legs

At the bottom of the exchange box, it is used to support the exchange box, and it can be extended and folded.

JT/T 1272-2019

Fork groove

Transversely penetrate the bottom structure of the box at the prescribed position of the exchange box, so that the teeth of the forklift can penetrate into the groove at the bottom of the box.

Maximum total massmaximum total mass Maximum mass of the exchange box when fully loaded.

Load mass

Maximum allowable loading mass of the exchange box.

Corner fitting

The parts provided at each corner of the box play the role of supporting, stacking, carrying and fastening the exchange box.

Note. Rewrite GB/T.1992-2006, definition 6. 1. 1. 1.

4 Technical requirements

4.1 General

4.1.1 The exchange box should have a certain degree of rigidity and strength. During loading and unloading and transportation, there should be no permanent deformation affecting the use.

4.1.2 After the end walls and side walls of the exchange box are unloaded, they shall not cause permanent deformation greater than 12 mm without affecting its function.

4.1.3 The exchange box should have good rain-proof sealing performance, and there should be no leakage during use.

4.1.4 The identification and operation identification of the exchange box shall comply with the provisions of JT/T 1195.

4.1.5 The exchange box should be fixed by corner pieces during road, rail, and water transportation and meet the relevant technical conditions;

Car transport; freight yard can be loaded and unloaded with special spreaders and forklifts.

4.2 Dimensions and maximum total mass the external dimensions, allowable deviations and maximum total mass (R) of the exchange box are shown in Figure 1 and Table 1.

Table 1 External dimensions, allowable deviations and maximum total mass of the exchange box

model

| d1-d2 |

C725 7 2500- 20

C745 7 4500- 20

C782 7 8200- 20

5 853 ± 3

698. 50- 3

798. 50- 3

988. 50- 3

4 876 + 100- 6

2 550a 2 259 ± 3 13 16 000

Note 1. C725, C745 and C782 are three different types of C-type exchange boxes;

Note 2. There are three different profile heights of two different types of exchange boxes. 2,750mm, 2,820mm, and 2,986mm.

a The incubator shall be 2,600 mm.

JT/T 1272-2019

4.3 corner pieces

There should be 4 corner pieces at the bottom of the exchange box. The installation position is shown in Figure 1. The structure size is shown in Figure 2. The strength should meet GB/T 1835 requirements for midsole corner pieces.

Explanation.

1 --- grab groove;

2 --- corner pieces;

l1 --- the outline length of the exchange box;

l2 --- the longitudinal fixed size of the corner piece;

l3 --- the distance from the corner piece to the front of the exchange box, including the thickness of the front stop;

l4--grip spacing;

h --- the height of the outline of the exchange box;

b1 --- the outline width of the exchange box;

b2 --- lateral fixation of corner pieces;

d1, d2 --- diagonal distance of corner pieces;

sigma --- tolerance.

Figure 1 Dimensions of the exchange box

4.4 Gripper

The exchange box should have 4 gripping grooves, the position of which is shown in Figure 1, and the dimensions shown in Figure 3. When setting, ensure that the grapple of the loading and unloading equipment Does not deviate from the gripping groove area when moving longitudinally.

JT/T 1272-2019

Figure 2 Schematic diagram of the corner piece structure

Figure 3 Schematic diagram of gripping groove size

4.5 guide groove

A guide groove should be provided on the bottom plate of the exchange box, and the guide groove penetrates the entire bottom plate longitudinally. The bottom surface of the guide groove should be the same as the bottom surface of the corner piece.

A plane whose position and dimensions are shown in Figure 4.

4.6 front stop

A metal stopper should be installed at the lower end of the outside of the front wall of the exchange box, centered. The minimum size of the front stop is 800mm × 160mm.

The small thickness is 8mm. Its position and dimensions are shown in Figure 5. The front stopper should not affect the permanent use during the exchange box loading and unloading.

Deformation.

JT/T 1272-2019

Figure 4 Position and size of guide groove

Explanation.

1 --- Front stop.

Figure 5 Position and size of front stop

4.7 legs

The exchange box should be installed with 4 legs, according to the requirements of the height of the bottom of the exchange box from the ground H (generally 970mm, 1220mm, 1320mm) Select the corresponding specification leg. The outriggers can be extended and retracted horizontally and vertically. At least two safety structures should be provided to prevent them from falling off.

Leg pads less than 95mm x 95mm. The mounting position and dimensions of the outriggers are shown in Figure 6.

When the exchange box is fully loaded, the outriggers should be stable and reliable.

4.8 fork groove

The exchange box should be provided with a fork groove. The distance between the fork groove and the bottom of the exchange box is more than 20mm, its length is greater than 355mm, and its width is greater than 115mm.

And dimensions are shown in Figure 7.

When the exchange box is carried or loaded with a forklift, there should be no permanent deformation that affects the use.

JT/T 1272-2019

Explanation.

1 --- Outriggers.

Figure 6 Schematic diagram of the position and size of the outriggers

Explanation.

1 --- Fork groove.

Figure 7 Schematic of the position and size of the fork groove

5 Test method

5.1 vertical intensity with the legs retracted, place the exchange box flat on 4 horizontal pads. The size and position of the pads are the same as the corner pieces of the exchange box. In the box Load evenly on the inner floor to 1. 5Rg, keep 5min. After unloading, visually observe the vertical deformation of the exchange box.

5.2 Horizontal intensity Load the exchange box uniformly to 1 RG, one end is fixed through the bottom hole of the corner piece, and the two corner pieces at the other end are simultaneously applied with 1 RG water Do the flat and pull pressure once, and keep each for 5 minutes. After unloading, visually observe the horizontal deformation of the exchange box.

5.3 bottom crane test Load the exchange box evenly. 5Rg, lifting the box at a uniform speed through the side holes of the bottom corner piece, the angle between the lifting force and the horizontal direction is 45 °, and the lifting the line of force from the side wall of the box is not more than 38mm. The spreader should not apply pressure to the side wall of the box, and it should be kept for 5 minutes after being lifted. After unloading, visually observe the exchange box Deformation.

JT/T 1272-2019

5.4 End wall and side wall strength Apply equal and uniformly distributed 0 to the inner surface of the front wall of the exchange box. 5Pg load, keep 5min. After unloading, the measurement exchange box changes circumstances.

Apply equal and uniformly distributed 0 to the inner surface of the rear wall of the exchange box. 3Pg load, keep 5min. After unloading, the measurement exchange box changes circumstances.

Apply equal and uniformly distributed 0 to the inner surface of the side wall of the exchange box. 4Pg load, keep 5min. After unloading, measure the deformation of the exchange box.

5.5 floor strength

The tests were carried out with rubber-covered wheels. The axle load of the vehicle should reach 4 400 kg, each wheel load is 2.200 kg;

The interval between the two wheels is 760mm, and the actual grounding area of each wheel within the above range should not be greater than 14.200mm2.

The exchange box was tested under the condition that the outriggers were retracted with the four lower corners fixed and the outriggers were supported. The test car goes on the floor of the box Repeat the movement to cover the entire floor of the exchange box. The inspection vehicle stayed at the weakest position of the floor for 5 minutes. After unloading, observe the deformation of the exchange box visually.

5.6 Rain tightness

All box doors of the exchange box are closed normally. Rainfall test bench is used to simulate rainfall, and the rainfall intensity is not less than 0. 12mm/s, and cover the entire traffic Change the cabinet. After 15 minutes, observe the exchange box for leakage.

5.7 Dimensions and maximum total mass the size of the exchange box is measured in accordance with GB/T 12673.

The determination of the maximum total mass shall be carried out in accordance with GB/T 12674.

5.8 Gripper

Load the exchange box evenly. 25 Rg, use 4 grappling hooks or similar tool hooks to align the center of the gripping groove to lift the box, each supporting the supporting surface is not less than 30mm × 260mm, and it is kept for 5min after being lifted. After unloading, observe the deformation of the exchange box visually.

5.9 guide groove

Visually check whether there are protrusions within the range of 50mm from the A and B sides of the guide groove, as shown in Figure 8.

Explanation.

1 --- Guide groove A surface;

2 --- Guide groove B side.

Figure 8 Guide groove test chart

JT/T 1272-2019

5.10 front stop

With the outriggers supported, load the exchange box evenly. 25kg, evenly apply 16kN water within 120mm from the center of the front stop Flat thrust, keep 5min. After unloading, visually observe the deformation of the front stop.

5.11 leg stability

With the outriggers supported, load the exchange box evenly. 25Rg, apply 25kN horizontal force in the longitudinal direction of the center of the end beam and check Test, push and pull once; use 22. The horizontal force is measured at 5kN, and each time is pushed and pulled, and the deformation of the exchange box is observed visually. Horizontal force the schematic is shown in Figure 9.

Figure 9 Schematic diagram of the force of the outrigger stability detection level

5.12 Fork groove

Load the exchange box evenly. 6Rg, using two.200mm wide arms to protrude from the outer wall of the same side plate of the exchange box into the fork groove at 1828mm ± 3mm, the fork arm is located in the middle of the groove, and the exchange box is lifted to stay for 5min. After unloading, visually observe the deformation of the exchange box.

JT/T 1272-2019