Front and rear axle structure of aviation passenger ladder

Abstract

A front and rear axle structure of an aviation passenger ladder comprises an axle body and a damping structure installed on the axle body, the damping structure comprises a plurality of plate springs, and the plate springs are stacked together and then fixed to the axle body through U-shaped fixing pieces; according to the front and rear axle structure of the passenger ladder for aviation, an innovative sliding block type limiting structure is adopted, dislocation between the upper-layer plate spring and the lower-layer plate spring is effectively prevented, and stable operation is ensured. In addition, due to the design of the lubricating mechanisms, lubrication between the adjacent plate springs is more uniform, and the service life of the machine is greatly prolonged. Meanwhile, lubricating oil is recycled between the plate springs, waste is reduced, and energy efficiency is improved. In addition, the oil receiving groove, the lubricating oil tank, the recovery mechanism and the like are designed, so that lubricating oil can form closed-loop circulation in the machine, and long-term stable operation of the machine is guaranteed. In general, the structural design not only solves actual problems, but also has good economical efficiency and operability.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle axles, in particular to a front and rear axle structure of an aviation passenger ladder vehicle. Background Art

[0002] The axle is a vital component in the automotive industry. It connects the driving wheels and suspension system of the vehicle, making the vehicle more stable and reliable during driving. However, the axle will be subjected to huge impact and vibration during operation, which will cause serious wear of the axle, affecting its service life and driving safety. Therefore, in order to improve the efficiency of the axle and extend its service life, designers have been seeking new solutions.

[0003] With the vigorous development of my country's aviation industry, the requirements for aircraft take-off and landing stability and ride comfort are getting higher and higher. In order to meet these requirements, aviation buses have adopted advanced shock absorption technology, including shock absorption structures on axles. However, the traditional leaf spring shock absorption structure has also exposed many problems in practical applications, such as excessive friction between leaf springs, wear caused by long-term use, etc. In addition, the existing leaf springs are generally clamped by fixed hoops, and it is often difficult to limit the relative sliding of the upper and lower leaf springs in the length direction by only using fixed hoops. In the long run, it may also cause the leaf springs to loosen. These problems seriously affect the ride comfort and safety of aviation buses.

[0004] Therefore, developing a new and efficient shock-absorbing structure has become a key issue that needs to be urgently addressed in the current aviation industry, and this application was created in this context. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a front and rear axle structure of an aviation passenger ladder vehicle to solve the above problem.

[0006] To achieve the above-mentioned purpose, the utility model provides a front and rear axle structure of an aviation passenger ladder, comprising a bridge body and a shock absorbing structure installed on the bridge body, wherein the shock absorbing structure comprises

[0007] There are several leaf springs, which are stacked together and fixed to the bridge body through U-shaped fixing pieces;

[0008] The slider limiting structure is arranged on the leaf spring, and comprises a limiting block and a limiting opening, wherein the limiting block is integrally formed on the surface of the leaf spring, and the limiting opening penetrates the leaf spring, and the leaf spring located at the lower layer is slidably arranged in the limiting opening of the upper layer leaf spring through the limiting block on its surface;

[0009] The lubrication mechanism is arranged between two adjacent leaf springs and comprises a lubrication groove which is embedded in the surface of the lower leaf spring.

[0010] Preferably, a limiting strip is provided on the lower surface of the leaf spring, and a limiting groove corresponding to the limiting strip is provided on the surface of the leaf spring below, and the limiting strip is movably arranged in the limiting groove.

[0011] Preferably, lubrication balls are provided in the lubrication groove.

[0012] Preferably, the lubrication groove is an S-shaped wavy line structure.

[0013] Preferably, the bridge body is installed with a shock absorber, one end of the shock absorber is rotatably connected to the bridge body, and the other end of the shock absorber is used to be rotatably connected to the vehicle body.

[0014] Preferably, the lubrication mechanism also includes an oil receiving groove arranged at the bottom of the bridge body, a lubricating oil tank arranged on the bridge body for adding lubricating oil to the limit port, and a recovery mechanism arranged between the oil receiving grooves for recovering the lubricating oil to the lubricating oil tank.

[0015] Preferably, the recovery mechanism comprises a refueling pump arranged on the lubricating oil tank for adding lubricating oil to the limit port and a recovery oil pump connected to the oil receiving groove for recovering the lubricating oil into the lubricating oil tank.

[0016] Beneficial effects: The front and rear axle structures of the aviation passenger elevator of the utility model adopt an innovative slider-type limiting structure, which effectively prevents the misalignment between the upper and lower leaf springs and ensures smooth operation. In addition, the design of the lubrication mechanism makes the lubrication between adjacent leaf springs more uniform, greatly improving the service life of the machine. At the same time, the recycling of lubricating oil between leaf springs reduces waste and improves energy efficiency. In addition, the design of the oil receiving trough, lubricating oil tank and recovery mechanism allows the lubricating oil to form a closed-loop circulation inside the machine, ensuring the long-term and stable operation of the machine. In general, this structural design not only solves practical problems, but also has good economy and operability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the sliding limit structure of the utility model.

[0020] Figure 3 It is a schematic diagram of the leaf spring structure of the utility model.

[0021] In the figure: 1. bridge body; 2. shock absorbing structure; 3. leaf spring; 31. lubrication groove; 32. limit strip; 33. limit groove; 4. U-shaped fixing piece; 5. slider limit structure; 51. limit block; 52. limit opening; 6. lubrication mechanism; 61. lubrication ball; 621. oil receiving groove; 622. lubricating oil tank; 623. recovery mechanism; 6231. refueling pump; 6232. oil recovery pump; 7. shock absorber. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-3 The specific implementation modes of the present utility model are further described in detail.

[0023] Depend on Figure 1-3 The utility model provides a front and rear axle structure of an aviation passenger elevator, comprising a bridge body 1 and a shock absorbing structure 2 installed on the bridge body 1, wherein the shock absorbing structure 2 comprises

[0024] The leaf springs 3 are in a plurality of pieces, and the leaf springs 3 are stacked together and fixed to the bridge body 1 through a U-shaped fixing member 4. The above is the prior art and will not be described in detail here;

[0025] The slider limiting structure 5 is arranged on the leaf spring 3, and comprises a limiting block 51 and a limiting opening 52. The limiting block 51 is integrally formed on the surface of the leaf spring 3, and the limiting opening 52 penetrates the leaf spring 3. The leaf spring 3 located at the lower layer is slidably arranged in the limiting opening 52 of the upper leaf spring 3 through the limiting block 51 on its surface. After the leaf springs 3 are connected together by the setting of the slider limiting structure 5, the limiting block 51 located on the lower leaf spring 3 is slidably arranged in the limiting opening 52 of the upper leaf spring 3. When the leaf spring 3 is deformed, the limiting block 51 slides in the limiting opening 52, so that the leaf springs 3 of the upper and lower layers are always connected together through the limiting block 51 and the limiting opening 52 to prevent dislocation.

[0026] The lubrication mechanism 6 is arranged between two adjacent leaf springs 3 and is used for lubricating between the adjacent leaf springs 3. The lubrication mechanism 6 includes a lubrication groove 31. The lubrication groove 31 is embedded in the surface of the lower leaf spring 3. When in use, lubricating liquid is added to the limit opening 52. Since the two ends of the leaf spring 3 are relatively high, the lubricating liquid automatically flows in the lubrication groove 31 toward a lower direction. When the lubricating liquid is sufficient, the lubricating liquid will also flow through the limit opening 52 to the surface of the lower leaf spring 3. In this way, the lubricating oil can be filled between the two leaf springs 3 as much as possible to play a lubricating role.

[0027] In some embodiments, a limiting strip 32 is provided on the lower surface of the leaf spring 3, and a limiting groove 33 corresponding to the limiting strip 32 is provided on the surface of the leaf spring 3 located below. The limiting strip 32 is movably arranged in the limiting groove 33. Through the arrangement of the limiting strip 32 and the limiting groove 33, not only the upper and lower layers of the leaf springs 3 are limited together to prevent misalignment, but also the side of the leaf spring 3 can be closed to prevent the lubricating oil from flowing out from the gap on the side.

[0028] Furthermore, a lubricating ball 61 is provided in the lubricating groove 31. When the leaf spring 3 is compressed and deformed, the lubricating ball 61 will be squeezed. The lubricating ball 61 is squeezed and rolls in situ in the lubricating groove 31. When rolling, the lubricating oil is exchanged with the adjacent lubricating balls 61, so that the lubricating oil is evenly distributed.

[0029] In some embodiments, the lubrication groove 31 is an S-shaped wavy line structure.

[0030] In some embodiments, the bridge body 1 is installed with a shock absorber 7, one end of the shock absorber 7 is rotatably connected to the bridge body 1, and the other end of the shock absorber 7 is used to be rotatably connected to the vehicle body.

[0031] In order to make the lubrication more complete, the lubrication mechanism 6 also includes an oil receiving groove 621 arranged at the bottom of the bridge body 1, a lubricating oil tank 622 arranged on the bridge body 1 for adding lubricating oil to the limit opening 52, and a recovery mechanism 623 arranged between the oil receiving grooves 621 for recovering the lubricating oil to the lubricating oil tank 622. The oil receiving groove 621 can be fixed to the bridge body 1 by an external bracket so that it is arranged at the lower end of the leaf spring 3. In this way, excess lubricating oil can flow downward through the limit opening 52 of the lowest leaf spring 3 and enter the oil receiving groove 621, and is recovered into the lubricating oil tank 622 again under the action of the recovery mechanism 623, and then added to the limit opening 52 of the uppermost leaf spring 3 through the lubricating oil tank 622. In this way, the local circulation of the lubricating oil is realized, making the lubrication more complete. Of course, a filter can be set on the circulating pipeline to filter dust, which will not be elaborated here.

[0032] In some embodiments, the recovery mechanism 623 includes a refueling pump 6231 disposed on the lubricating oil tank 622 for adding lubricating oil to the limiting opening 52 and a recovery oil pump 6232 connected to the oil receiving groove 621 for recovering the lubricating oil into the lubricating oil tank 622 .

[0033] Working principle: The front and rear axles of the aviation passenger elevator car of the utility model effectively prevent the misalignment between the upper and lower leaf springs 3 through the setting of the slider limit structure 5, ensuring smooth operation. In terms of lubrication, the utility model sets a lubrication mechanism 6 between two adjacent leaf springs 3, and the friction between the leaf springs 3 is effectively reduced by the flow of lubricating oil in the lubrication groove 31. In addition, the design of the oil receiving groove 621, the lubricating oil tank 622 and the recovery mechanism 623 allows the lubricating oil to form a closed loop circulation inside the machine, ensuring the long-term stable operation of the machine.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A front and rear axle structure of an aviation passenger ladder, comprising a bridge body (1) and a shock absorbing structure (2) installed on the bridge body (1), characterized in that: The shock absorbing structure (2) comprises A plurality of leaf springs (3) are stacked together and fixed to the bridge body (1) via a U-shaped fixing member (4); The slider limiting structure (5) is arranged on the leaf spring (3), and comprises a limiting block (51) and a limiting opening (52); the limiting block (51) is integrally formed on the surface of the leaf spring (3); the limiting opening (52) penetrates the leaf spring (3); the leaf spring (3) located at the lower layer is slidably arranged in the limiting opening (52) of the upper layer leaf spring (3) through the limiting block (51) on its surface; The lubrication mechanism (6) is arranged between two adjacent leaf springs (3) and comprises a lubrication groove (31). The lubrication groove (31) is embedded in the surface of the lower leaf spring (3).

2. The front and rear axle structure of an aviation passenger ladder vehicle according to claim 1, characterized in that: The lower surface of the leaf spring (3) is provided with a limiting strip (32), and the surface of the leaf spring (3) located below is provided with a limiting groove (33) corresponding to the limiting strip (32), and the limiting strip (32) is movably arranged in the limiting groove (33).

3. The front and rear axle structure of an aviation passenger ladder vehicle according to claim 1, characterized in that: A lubrication ball (61) is arranged in the lubrication groove (31).

4. The front and rear axle structure of an aviation passenger ladder according to claim 1 or 3, characterized in that: The lubrication groove (31) is an S-shaped wave line structure.

5. The front and rear axle structure of an aviation passenger ladder vehicle according to claim 1, characterized in that: The bridge body (1) is equipped with a shock absorber (7), one end of the shock absorber (7) is rotatably connected to the bridge body (1), and the other end of the shock absorber (7) is used to be rotatably connected to the vehicle body.

6. The front and rear axle structure of an aviation passenger ladder vehicle according to claim 1, characterized in that: The lubricating mechanism (6) further comprises an oil receiving groove (621) arranged at the bottom of the bridge body (1), a lubricating oil tank (622) arranged on the bridge body (1) for adding lubricating oil to the limit opening (52), and a recovery mechanism (623) arranged between the oil receiving grooves (621) for recovering the lubricating oil to the lubricating oil tank (622).

7. The front and rear axle structure of an aviation passenger ladder vehicle according to claim 6, characterized in that: The recovery mechanism (623) comprises a refueling pump (6231) arranged on the lubricating oil tank (622) for adding lubricating oil to the limit opening (52), and a recovery oil pump (6232) connected to the oil receiving groove (621) for recovering the lubricating oil into the lubricating oil tank (622).

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