Universal spare tire support used for heavy truck

Abstract

The utility model relates to a universal spare tire support for a heavy truck, which comprises a support assembly, a sheath, a spare tire lifter assembly, a hook assembly and a crank, the support assembly consists of a U-shaped steel plate and two vertical plates, the lower wing surface of the U-shaped steel plate is connected with the spare tire lifter assembly, one side surface of the U-shaped steel plate is connected with a girder, the other side surface of the U-shaped steel plate is connected with the crank, and the lower wing surface of the U-shaped steel plate is connected with the hook assembly. A sheath is arranged at the joint, and the hook assembly is connected to the lower portion of the spare tire up-down regulator assembly. According to the utility model, through modularized integration of all systems, the number of excessive connecting pieces is reduced, and the weight of the whole vehicle is reduced; and the design is optimized on the basis of a mature bracket, so that the use risk is reduced, and the universality of tire adaptation is improved.

Description

Technical Field

[0001] The utility model relates to a spare tire bracket, in particular to a universal spare tire bracket used for heavy trucks. Background Art

[0002] As the variety of truck tires increases, the number of compatible tire brackets is also increasing. To reduce spare tire bracket manufacturing costs and achieve universal spare tire brackets, a universal spare tire bracket has been designed that can accommodate 12.00R20 tires, 12.00-20 tires, 14.00R20 tires, 14.00-20 tires, 15.5R20 tires, 15.5-20 tires, 16.00R20 tires, and 16.00-20 tires. Utility Model Content

[0003] The utility model provides a universal spare tire bracket for heavy trucks. By integrating various functional parts such as a frame, a crank and a hanger, eight mature tire brackets such as 12.00, 14.00, 15.5 and 16.00 are integrated, designed and optimized, achieving multiple uses of one bracket, saving costs and reducing the weight of the bracket.

[0004] The utility model is realized by the following technical solutions:

[0005] A universal spare tire bracket for heavy-duty trucks includes a support assembly 1, a cover 2, a spare tire lifter assembly 3, a hook assembly 4, and a crank handle 5. The support assembly 1 is composed of a U-shaped steel plate and two vertical plates with a thickness of 8 mm. The lower wing surface of the U-shaped steel plate is provided with four M14 screws for connecting to the spare tire lifter assembly 3. One side surface is provided with six M14 bolts for connecting to the beam, and the other side surface is connected to the crank handle 5. The connection is provided with a cover 2. The hook assembly 4 is connected to the bottom of the spare tire lifter assembly 3.

[0006] The sheath is made of nylon and has 6 stress relief groove structures, which fit the clearance of the crank 5.

[0007] The spare tire lifter assembly includes a crank mechanism, pulley set and pull cable, and is electrophoretically treated as a whole.

[0008] Beneficial effects of the utility model:

[0009] 1. Through the modular integration of various systems, the number of excessive connectors is reduced and the weight of the entire vehicle is reduced.

[0010] 2. The design is optimized based on the mature bracket, which reduces the risk of use and improves the versatility of tire adaptation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 yes Figure 1 Right view of . DETAILED DESCRIPTION

[0013] The main body of the bracket designed in this utility model is made of Q235, and the standard parts adopt Dacromet technology, and the whole is electrophoresed and hot-dip galvanized.

[0014] (1) Layout

[0015] For specific layout, see Figure 1 、 2 , including the support assembly 1, the cover 2, the spare tire lifter assembly 3, the hook assembly 4, and the crank 5.

[0016] The main body of the spare tire bracket is the support assembly, which consists of a U-shaped steel plate and two vertical plates. The plate thickness is 8mm. There are 4 M14 screws on the lower wing surface to connect the spare tire lifter, and 6 M14 bolts on the other side to connect it to the beam. It can carry a maximum load of 700kg.

[0017] The sheath is a transition piece that prevents friction between the support assembly and the crank. It is made of nylon and has 6 stress relief groove structures. It adopts a clearance fit to release the stress caused by uneven force on the crank.

[0018] The spare tire lifter is mainly composed of a shaking mechanism, a pulley set, a pull wire, etc., and is electrophoretically treated as a whole. Through the speed ratio and structural optimization of the pulley set, the operating force can be achieved to be about 1 / 5 of the tire weight.

[0019] The hook assembly is used in the clamping mechanism between the lifter and the rim.

[0020] The crank handle is used to operate the mechanical mechanism for raising and lowering the tire.

[0021] (2) Technical and process requirements

[0022] 1. The bracket meets the technical requirements of Q / NB.J03118 spare tire bracket;

[0023] 2. Except for nylon rope, all parts shall be electrophoretically primed before assembly. The performance of electrophoretic primer shall meet the requirements of Q / NB.J04017. After assembly, topcoat shall be sprayed. The topcoat shall be acrylic polyurethane enamel. The color shall be the same as that of the cab. It shall meet the technical requirements of standard color plate Q / NB.J04005 and the thickness shall meet the requirements of Q / NB.J04002.

[0024] 3. The threaded part is not painted, but oiled to prevent rust;

[0025] 4. The paint color shall comply with Q / NB.J04005 Beiben heavy truck topcoat color code and standard color version technical requirements;

[0026] 5. All fasteners should be tightened according to the standard torque requirements of N33034;

[0027] 6. Parts must not be bumped, scratched or rusted during assembly;

[0028] 7. Before the vehicle leaves the factory, ensure that the lifter is lubricated with grease to ensure that the actual operating force of the spare tire is close to the theoretical lifting and lowering force of 109N;

[0029] 8. Ensure that the rope tension is perpendicular to the ground during lifting.

[0030] The utility model makes full use of the universal design and integrated design ideas, integrates various systems and components with different functions by optimizing various components, and carries out universal integration of various system parts.

Claims

1. A universal spare tire bracket for heavy trucks, characterized by: It includes a support assembly, a cover, a spare tire lifter assembly, a hook assembly and a crank. The support assembly is composed of a U-shaped steel plate and two vertical plates. The lower wing surface of the U-shaped steel plate is connected to the spare tire lifter assembly, one side is connected to the beam, and the other side is connected to the crank. A cover is provided at the connection point, and the hook assembly is connected below the spare tire lifter assembly.

2. The universal spare tire bracket for heavy trucks according to claim 1, characterized in that: The sheath is made of nylon and has 6 stress relief grooves to match the clearance of the crank.

3. The universal spare tire bracket for heavy trucks according to claim 1, characterized in that: The spare tire lifter assembly includes a crank mechanism, pulley set and pull cable, and is electrophoretically treated as a whole.

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