Special vehicle axle with three-stage reduction function

Abstract

The utility model belongs to the technical field of automobile axle, concretely relates to a special axle with three -stage reduction function, including axle main part, one side fixedly connected with the butt -joint axle of axle main part, the outer ring surface of butt -joint axle is limited and is connected with bearing assembly, the utility model discloses transmission gear and reduction gear interlock with the fixed connection of transmission rod side surface, realizes three -stage reduction function, can effectively reduce the vehicle speed and promotes the torque output, satisfies the demand of power control under the special operation scene, and the size of fixed frame side edge limit opening is matched with the limit axle, and the limit structure that combines the stopper, return spring and clamping block can accurately fix the installation position of reduction gear, avoids the displacement or shaking in the process of gear transmission, guarantees the stability of reduction transmission and power transmission efficiency, improves the safety and controllability when special vehicle travels and operates.

Description

Technical Field

[0001] This utility model belongs to the field of automotive axle technology, specifically relating to a special axle with three-stage deceleration function. Background Technology

[0002] The axle, also known as the vehicle axle, is an important core component of the automobile chassis. It is mainly used to connect the left and right wheels of the vehicle and bear the vehicle's load. At the same time, it transmits the vehicle's power and braking force to realize the vehicle's driving, steering and braking functions. When users use the axle, it is required to have a deceleration function.

[0003] A search revealed that Chinese patent CN217022075U, published under patent announcement number CN217022075U, includes an axle housing, a differential assembly, an axle shaft, a shock absorber bracket, a wheel hub, a cover plate, a perforated plate, and a perfluoropolypropylene coating. The axle housing is located on both sides of the differential assembly, the axle shaft is connected to the differential assembly and is located inside the axle housing, the shock absorber bracket is located at the middle of the outer side of the axle housing, the wheel hub is located at one end of the axle shaft and passes through the wheel hub, the cover plate is located inside the wheel hub and the axle shaft passes through the cover plate, the perforated plate is installed at the end of the axle shaft and is located at one end inside the wheel hub, and the perfluoropolypropylene coating is applied to the surfaces of the axle shaft and the wheel hub. This corrosion-resistant axle, by incorporating a baffle plate inside the wheel hub and applying an anti-corrosion coating to the axle and wheel hub surfaces, prevents abrasion and corrosion from sand, gravel, and mud. Rust-preventive lubricating oil is injected between the axle shaft and the cover plate to prevent corrosion of the steel due to coating wear.

[0004] However, the following defects still exist: (1) In the traditional special vehicle axle deceleration structure, there is a lack of precise limit guide design, which often results in installation position deviation or displacement swaying due to vibration. Moreover, the stability of the limit structure is insufficient, which will cause the power transmission efficiency to fluctuate greatly during the deceleration transmission process. It is difficult to meet the precise requirements for speed control and torque output in special operation scenarios. Furthermore, the instability will aggravate component wear, reduce the service life of the transmission system, and affect the safety and maneuverability of special vehicles during driving and operation.

[0005] (2) The existing special vehicle axle has a complex connection method and poor stability. It is easy to loosen during vehicle operation. Furthermore, users need to spend a lot of time disassembling parts when maintaining and repairing the internal structure, which is difficult and costly.

[0006] To address this, a special axle with three-stage deceleration function is proposed. Utility Model Content

[0007] The purpose of this utility model is to address the existing problems.

[0008] To achieve the above-mentioned objectives, this utility model provides the following technical solution: The present invention is as follows: a special vehicle axle with three-stage deceleration function, including a vehicle axle body, a docking shaft fixedly connected to one side of the vehicle axle body, a bearing assembly being limited and sleeved on the outer ring surface of the docking shaft, a docking block being fixedly connected to the outer ring surface of the bearing assembly, and a fixing frame being fixedly connected to one side of the docking block.

[0009] A stop block is fixedly connected to the side surface of the fixed frame, a return spring is fixedly connected to the bottom surface of the stop block, a snap-fit ​​block is fixedly connected to the surface of the return spring, a limit pin is inserted into the inner ring surface of the snap-fit ​​block, and a reduction gear is fixedly connected to the side surface of the limit pin.

[0010] A protective shell is fixedly connected to the outer ring surface of the fixed frame, a fixing block is fixedly connected to the side surface of the protective shell, a nut is limited and snapped onto the side surface of the fixing block, a protective plate is limited and inserted into the inner ring surface of the protective shell, a pull handle is fixedly connected to the side surface of the protective plate, and a transmission rod is fixedly connected to the side surface of the docking shaft.

[0011] As a preferred technical solution of this utility model, a limiting opening is provided on the side surface of the fixed frame, and the size of the limiting opening and the limiting shaft are matched. The limiting opening can play a precise limiting and guiding role for the limiting shaft, avoiding radial displacement of the limiting shaft during rotation, ensuring that the reduction gear and the transmission gear always maintain a stable meshing state, thereby ensuring the smoothness and reliability of the three-stage reduction transmission.

[0012] As a preferred technical solution of this utility model, the protective shell has a mounting block fixedly connected to its side surface, and the mounting block is arranged around the protective shell as the center point. The arrangement of the surrounding mounting block can make the installation force of the axle and the special vehicle more uniform, avoid excessive local force leading to deformation or damage of the installation structure, and enhance the overall stability of the axle installation.

[0013] As a preferred technical solution of this utility model, the side surface of the mounting block is provided with a mounting opening, and the number of mounting openings is multiple. The multiple mounting openings not only increase the flexibility of installation, but also allow for the selection of appropriate mounting hole positions according to actual installation needs, adapting to the installation requirements of different models of special vehicles. Furthermore, multiple fasteners can be used to fix the axle during installation, further enhancing the strength of the installation connection and preventing the axle from loosening during vehicle operation or work.

[0014] As a preferred technical solution of this utility model, a transmission gear is fixedly connected to the side surface of the transmission rod, and the transmission gear and the reduction gear are structurally matched. The matched gear structure is the core transmission basis for realizing the three-stage reduction function, which can ensure that the power is efficiently transmitted from the transmission rod to the reduction gear. The expected reduction ratio is achieved through the reasonable matching ratio of the number of gear teeth, which meets the speed and torque adjustment requirements of special vehicles under different working conditions.

[0015] As a preferred technical solution of this utility model, the inner ring surface of the nut is limited by a threaded rod, and the threaded rod is connected between the nut and the fixing block. The connection method between the threaded rod and the nut makes the disassembly and assembly of the protective shell and the fixing block more convenient, and facilitates the maintenance and repair of the internal deceleration structure of the axle in the later stage.

[0016] As a preferred technical solution of this utility model, a limiting rod is fixedly connected to the side surface of the stop block, and the limiting rod is connected to the locking block. The limiting rod can limit the movement trajectory of the locking block, prevent the locking block from shifting laterally under the action of the return spring, ensure that the locking block can always accurately lock the limiting shaft, ensure the stability of the limiting shaft when rotating, and avoid the limiting failure caused by the locking block shifting, which would affect the deceleration effect.

[0017] As a preferred technical solution of this utility model, the nut is connected to the protective shell through a fixing block, and the fixing block is symmetrically arranged with the vertical center line of the nut as the axis of symmetry. The symmetrical fixing block can make the nut more balanced when subjected to force, avoid excessive force on one side of the fixing block and damage, enhance the load-bearing capacity of the connection structure between the nut and the protective shell, ensure the connection strength between the protective shell and the fixing frame, and provide reliable protective support for the internal components.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The transmission gear and reduction gear, which are fixedly connected to the side surface of the transmission rod, mesh with each other to achieve a three-stage reduction function. This effectively reduces the vehicle's speed and increases torque output, meeting the power control requirements in special operation scenarios. The size of the limiting shaft and the limiting opening on the side of the fixed frame are matched. Combined with the limiting structure consisting of the stop block, return spring, and snap-fit ​​block, the installation position of the reduction gear can be precisely fixed, avoiding displacement or shaking during gear transmission. This ensures the stability of the reduction transmission and the efficiency of power transmission, improving the safety and maneuverability of special vehicles during driving and operation.

[0019] 2. The protective shell is securely connected to the fixed frame via a combination of a fixing block, nut, and threaded rod. The inner ring of the protective shell features a pull handle on the limiting insert, facilitating quick disassembly for inspection, repair, or replacement of internal deceleration components, reducing maintenance difficulty and cost. The outer ring of the protective shell includes mounting blocks and multiple mounting openings, facilitating the installation and docking of the axle with special vehicles and enhancing the structural strength of the protective shell. The limiting rod further limits the engagement block, improving overall structural stability and effectively preventing external dust and impurities from entering the internal transmission mechanism, thus extending the axle's service life. Attached Figure Description

[0020] Figure 1 A schematic diagram of the overall structure of the special vehicle axle with three-stage deceleration function provided by this utility model; Figure 2 A schematic diagram of the internal structure of the special vehicle axle with three-stage deceleration function provided by this utility model; Figure 3 A side view of the special vehicle axle with three-stage deceleration function provided by this utility model; Figure 4 This utility model provides a special axle with three-stage deceleration function. Figure 1 Enlarged view of the structure at point A in the middle; Figure 5 A cross-sectional view of the special vehicle axle with three-stage deceleration function provided by this utility model; Figure 6 This utility model provides a special axle with three-stage deceleration function. Figure 5 Enlarged view of the structure at point B in the middle.

[0021] The attached diagram lists the components represented by each number as follows: 1. Axle body; 2. Connecting shaft; 3. Bearing assembly; 4. Connecting block; 5. Fixing frame; 6. Limiting opening; 7. Limiting insert shaft; 8. Snap-fit ​​block; 9. Return spring; 10. Stop block; 11. Limiting insert rod; 12. Reduction gear; 13. Transmission rod; 14. Transmission gear; 15. Mounting block; 16. Mounting opening; 17. Protective plate; 18. Pull handle; 19. Fixing block; 20. Nut; 21. Threaded rod; 22. Protective shell. Detailed Implementation

[0022] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0023] Please see Figure 1-6The present invention provides a technical solution: a special vehicle axle with three-stage deceleration function, including a vehicle axle body 1, a docking shaft 2 fixedly connected to one side of the vehicle axle body 1, a bearing assembly 3 limitedly sleeved on the outer ring surface of the docking shaft 2, a docking block 4 fixedly connected to the outer ring surface of the bearing assembly 3, and a fixing frame 5 fixedly connected to one side of the docking block 4.

[0024] In this embodiment, a limiting opening 6 is provided on the side surface of the fixed frame 5, and the limiting opening 6 and the limiting insert 7 are matched in size. The limiting opening 6 can play a precise limiting and guiding role for the limiting insert 7, avoiding radial displacement of the limiting insert 7 during rotation, ensuring that the reduction gear 12 and the transmission gear 14 always maintain a stable meshing state, thereby ensuring the smoothness and reliability of the three-stage reduction transmission. The side surface of the protective shell 22 is fixedly connected to the mounting block 15, and the mounting block 15 is arranged around the protective shell 22 as the center point. The surrounding mounting block 15 can make the installation force of the axle and the special vehicle more uniform, avoiding excessive local force that may cause deformation or damage to the installation structure, and enhancing the overall stability of the axle installation.

[0025] like Figure 1-6 As shown, based on Embodiment 1, this utility model provides a technical solution: preferably, a stop block 10 is fixedly connected to the side surface of the fixed frame 5, a return spring 9 is fixedly connected to the bottom surface of the stop block 10, a snap-fit ​​block 8 is fixedly connected to the surface of the return spring 9, and a limit pin 7 is inserted into the inner ring surface of the snap-fit ​​block 8 for limiting.

[0026] In this embodiment, the side surface of the mounting block 15 is provided with mounting openings 16, and there are multiple mounting openings 16. The multiple mounting openings 16 not only increase the flexibility of installation, allowing for the selection of appropriate mounting hole positions according to actual installation needs, and adapting to the installation requirements of different models of special vehicles, but also allow for fixation by multiple fasteners during installation, further improving the strength of the installation connection and preventing the axle from loosening during vehicle operation or work. The side surface of the transmission rod 13 is fixedly connected to the transmission gear 14, and the transmission gear 14 and the reduction gear 12 are structurally matched. The matched gear structure is the core transmission foundation for realizing the three-stage reduction function, ensuring that power is efficiently transmitted from the transmission rod 13 to the reduction gear 12. The expected reduction ratio is achieved through the reasonable ratio of the number of gear teeth, meeting the speed and torque adjustment needs of special vehicles under different working conditions.

[0027] like Figure 1-6As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, a reduction gear 12 is fixedly connected to the side surface of the limiting insertion shaft 7, a protective shell 22 is fixedly connected to the outer ring surface of the fixing frame 5, a fixing block 19 is fixedly connected to the side surface of the protective shell 22, a nut 20 is limited and snapped onto the side surface of the fixing block 19, a protective plate 17 is limited and inserted into the inner ring surface of the protective shell 22, a pull handle 18 is fixedly connected to the side surface of the protective plate 17, and a transmission rod 13 is fixedly connected to the side surface of the docking shaft 2.

[0028] In this embodiment, a threaded rod 21 is inserted into the inner ring surface of the nut 20, and the threaded rod 21 is connected between the nut 20 and the fixing block 19. The connection between the threaded rod 21 and the nut 20 makes it easier to disassemble and assemble the protective shell 22 and the fixing block 19, which facilitates the maintenance and repair of the internal deceleration structure of the axle in the future. A limiting rod 11 is fixedly connected to the side surface of the stop block 10, and the limiting rod 11 is connected to the snap-fit ​​block 8. The limiting rod 11 can limit the movement trajectory of the snap-fit ​​block 8, prevent the snap-fit ​​block 8 from shifting laterally under the action of the return spring 9, ensure that the snap-fit ​​block 8 can always accurately limit the insertion of the limiting shaft 7, ensure the stability of the limiting shaft 7 when rotating, and avoid the limiting failure caused by the snap-fit ​​block 8 shifting, which would affect the deceleration effect.

[0029] Working principle: When the user operates the device, the user rotates the docking shaft 2. When the docking shaft 2 rotates, it drives the transmission rod 13, which is fixedly connected to its side surface, to rotate synchronously. This causes the transmission gear 14, which is fixedly connected to the side surface of the transmission rod 13, to start running, completing the initial power transmission. Since the transmission gear 14 and the reduction gear 12 are structurally matched, the operation of the transmission gear 14 drives the reduction gear 12 to rotate, and the first stage of deceleration is achieved through gear meshing. The reduction gear 12 is fixedly connected to the side surface of the limiting insert shaft 7. The size of the limiting insert shaft 7 and the limiting opening 6 opened on the side surface of the fixed frame 5 are matched. The limiting insert shaft 7 rotates stably within the limiting opening 6 and drives the subsequent deceleration structure to gradually complete the three-stage deceleration process. The stop block 10, which is fixedly connected to the side surface of the fixed frame 5, and the return spring 9, which is fixedly connected to the bottom surface of the stop block 10, apply an elastic force to the locking block 8, so that the inner ring surface of the locking block 8 tightly limits the insertion of the limiting insert shaft 7. The limiting rod 11, which is fixedly connected to the side surface of the stop block 10, is connected to the snap-fit ​​block 8 to further limit the displacement of the snap-fit ​​block 8, ensuring that the limiting shaft 7 and the reduction gear 12 are stable in position during transmission and avoiding shaking or displacement. The outer ring surface of the fixed frame 5 is fixedly connected to the protective shell 22. The protective plate 17, which is limited and inserted into the inner ring surface of the protective shell 22, can be easily installed and removed by the pull handle 18 to achieve dustproof and impurity protection for the internal reduction transmission structure. The fixing block 19, which is fixedly connected to the side surface of the protective shell 22, is engaged with the nut 20 for limiting and locking. The threaded rod 21, which is fixedly inserted into the inner ring surface of the nut 20, is connected to the fixing block 19 through the nut 20, so as to achieve a stable assembly of the protective shell 22 and the fixing frame 5. The mounting block 15, which is arranged around the side surface of the protective shell 22 with its center point, has multiple mounting openings 16 on its side surface, which facilitates the overall installation and docking of the entire axle with the special vehicle.

[0030] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A special axle with three-stage deceleration function, comprising an axle body (1), characterized in that: A docking shaft (2) is fixedly connected to one side of the axle body (1). A bearing assembly (3) is fitted onto the outer ring surface of the docking shaft (2). A docking block (4) is fixedly connected to the outer ring surface of the bearing assembly (3). A fixing frame (5) is fixedly connected to one side of the docking block (4). A stop block (10) is fixedly connected to the side surface of the fixing frame (5). A return spring (9) is fixedly connected to the bottom surface of the stop block (10). The surface of the reset spring (9) is fixedly connected to a snap-fit ​​block (8), the inner ring surface of the snap-fit ​​block (8) is limited by a limiting insert shaft (7), the side surface of the limiting insert shaft (7) is fixedly connected to a reduction gear (12), and the outer ring surface of the fixing frame (5) is fixedly connected to a protective shell (22). A fixing block (19) is fixedly connected to the side surface of the protective shell (22), a nut (20) is fixedly engaged on the side surface of the fixing block (19), a protective plate (17) is fixedly inserted into the inner ring surface of the protective shell (22), a pull handle (18) is fixedly connected to the side surface of the protective plate (17), and a transmission rod (13) is fixedly connected to the side surface of the docking shaft (2).

2. The special vehicle axle with three-stage deceleration function according to claim 1, characterized in that, The side surface of the fixed frame (5) has a limiting opening (6), and the limiting opening (6) and the limiting insert (7) are matched in size.

3. A special vehicle axle with three-stage deceleration function according to claim 1, characterized in that, The protective shell (22) is fixedly connected to the side surface of the protective shell (22), and the mounting block (15) is arranged around the protective shell (22) as the center point.

4. A special vehicle axle with three-stage deceleration function according to claim 3, characterized in that, The mounting block (15) has mounting openings (16) on its side surface, and there are multiple mounting openings (16).

5. A special vehicle axle with three-stage deceleration function according to claim 1, characterized in that, The transmission rod (13) is fixedly connected to a transmission gear (14) on its side surface, and the transmission gear (14) and the reduction gear (12) are structurally compatible.

6. A special vehicle axle with three-stage deceleration function according to claim 1, characterized in that, The inner ring surface of the nut (20) is fitted with a threaded rod (21), and the threaded rod (21) is connected between the nut (20) and the fixing block (19).

7. A special vehicle axle with three-stage deceleration function according to claim 1, characterized in that, The side surface of the stop (10) is fixedly connected to a limiting rod (11), and the limiting rod (11) and the snap-fit ​​block (8) are connected.

8. A special vehicle axle with three-stage deceleration function according to claim 1, characterized in that, The nut (20) is connected to the protective shell (22) through the fixing block (19), and the fixing block (19) is symmetrically arranged with the vertical center line of the nut (20) as the axis of symmetry.

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