A front reducer dismounting tool for a road roller
By designing a disassembly fixture for the front reducer of a road roller, and utilizing the pneumatic wrench nut and the locking nut of the disassembly outrigger, the problem of difficult disassembly using traditional tools was solved, achieving efficient disassembly of the locking nut and improving maintenance efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY SEVENTH GRP CO LTD
- Filing Date
- 2025-09-10
- Publication Date
- 2026-07-31
AI Technical Summary
Traditional disassembly tools are unable to apply sufficient force effectively, resulting in low efficiency in removing the locking nut of the front reducer of the road roller, which affects the smooth progress and quality of maintenance work.
A disassembly fixture for the front reducer of a road roller was designed, comprising a disc-shaped main body and evenly distributed disassembly legs. Power is provided by the pneumatic wrench nut, and the force is transmitted and the disassembly legs are engaged with the locking notch on the outer circumference of the locking nut to achieve stable disassembly.
It enables quick and easy disassembly of the locking nut of the reducer with high locking force, shortening the disassembly time and improving maintenance efficiency.
Smart Images

Figure CN224575597U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of speed reducer maintenance, specifically relating to a disassembly tool for the front speed reducer of a road roller. Background Technology
[0002] In the maintenance and repair of road rollers, the disassembly of the front reducer is a common and important task. The front reducer is usually fixed by a lock nut. Because the lock nut has a large tightening force and the space it occupies is relatively narrow, traditional disassembly tools (such as ordinary wrenches) are difficult to apply sufficient force effectively and are inconvenient to operate, which can easily lead to low disassembly efficiency and affect the smooth progress and quality of maintenance work.
[0003] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of the prior art. This utility model provides a tooling for disassembling the front reducer of a road roller.
[0005] To achieve the above objectives, this utility model provides the following technical solution: A tooling for disassembling the front reducer of a road roller includes: The main body is disc-shaped, and its diameter is adapted to the diameter of the locking nut of the reducer. A cannon nut is provided at the center of the upper surface of the main body. The support legs are disassembled. The disassembled support legs are evenly distributed around the circumference of the main body, and the disassembled support legs correspond to the snap-fit notches on the outer circumference of the locking round nuts.
[0006] Preferably, a snap-fit plate extends from the same side of the ends of the plurality of detachable outriggers, and the snap-fit plate is adapted to the snap-fit notch.
[0007] Preferably, the snap-fit plate is located on the clockwise side of the detachable support leg.
[0008] Preferably, the lower surface of the main body is provided with a plurality of reinforcing ribs respectively connected to a plurality of the detachable legs, one end of the reinforcing rib is connected to the center of the lower surface of the main body, and the other end is connected to the middle of the detachable leg.
[0009] Preferably, the same reinforcing rib includes two rib plates, which are respectively fixed on both sides of the detachable outrigger.
[0010] Preferably, there are three detachable support legs.
[0011] Preferably, the detachable support leg is an arc-shaped steel plate, and the arc shape corresponding to the inner side of the detachable support leg matches the arc shape corresponding to the inner wall of the snap-fit notch.
[0012] Preferably, the upper end of the detachable support leg is provided with a bent portion extending toward the center of the main body, the bent portion extending radially along the main body and fixed to its lower surface.
[0013] Beneficial effects: By utilizing the locking notch on the outer circumference of the locking nut of the disassembly outrigger and the nut of the air gun connected to the air gun, the powerful force provided by the air gun can be used to provide disassembly torque through the interlocking between the tool and the nut during disassembly. This allows for quick and easy disassembly of the locking nut of the reducer with a large locking force, greatly shortening the disassembly time and improving maintenance efficiency. Attached Figure Description
[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. Wherein: Figure 1 This is a simplified structural diagram of the disassembly fixture provided in a specific embodiment of the present invention; Figure 2 This is a simplified bottom view of the disassembly fixture in a specific embodiment of this utility model.
[0015] In the diagram: 1. Main body; 2. Pneumatic wrench nut; 3. Reinforcing rib; 4. Disassembled support leg; 5. Clip plate. Detailed Implementation
[0016] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art are within the protection scope of this utility model.
[0017] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected" and "linked" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.
[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.
[0019] like Figure 1-2 As shown, a disassembly fixture for a road roller front reducer is used to disassemble the locking nut of the road roller front reducer. Normally, the locking nut has 6 or 8 snap-fit notches on its exterior to allow for rotation. This application utilizes these snap-fit notches for disassembly. The disassembly fixture includes a main body 1 and disassembly legs 4, both made of steel plates. Specifically, the main body 1 is disc-shaped, and the disassembly legs 4 are strip-shaped. The diameter of the main body 1 matches the diameter of the reducer's locking nut, ensuring a good fit between the fixture and the locking nut and better transmitting force to the nut during disassembly. A pneumatic wrench nut 2 is located at the center of the upper surface of the main body 1. The pneumatic wrench nut 2 is fixed to the pneumatic wrench nut 2 by welding. The pneumatic wrench nut 2 is used to connect a pneumatic wrench or other power tool, providing strong rotational power to easily disassemble the nut with a large locking force, greatly improving disassembly efficiency.
[0020] The detachable support legs 4 are evenly distributed around the circumference of the main body 1. The detachable support legs 4 have corresponding locking notches outside the locking round nuts. In this way, when the pneumatic hammer drives the main body 1 to rotate, the detachable support legs 4 drive the locking round nuts to rotate through the locking notches.
[0021] In this embodiment, a snap-fit plate 5 extends from the same side of the ends of multiple detachable legs 4. The snap-fit plate 5 is adapted to the snap-fit notch and can be inserted into the snap-fit notch to achieve disassembly by using the snap-fit notch as the force point.
[0022] The snap-fit plate 5 is located on the clockwise side of the disassembly leg 4. This design allows the snap-fit plate 5 to more effectively lock the snap-fit notch when the tooling is rotated and disassembled by the pneumatic wrench, preventing relative sliding between the tooling and the round nut. This allows the end of the disassembly leg 4 to stop and lock the end face of the round nut, ensuring the snap-fit stability of the disassembly leg 4.
[0023] To increase the strength of the main body 1, the upper end of the disassembly leg 4 is provided with a bent part extending towards the center of the main body 1. The bent part extends radially along the main body 1 and is fixedly connected to it, thereby making the overall structure of the tooling more stable and able to withstand greater disassembly force.
[0024] In one optional embodiment, the snap-fit plate 5 and the detachable leg 4 are integrally formed, or the snap-fit plate 5 is threadedly assembled to the lower end of the detachable leg 4. Specifically, the snap-fit plate 5 is fixed to the outside or inside of the detachable leg 4 by bolts, so that the snap-fit plate 5 can be adjusted according to actual needs.
[0025] Furthermore, the bent section is fixed to the lower surface of the main body 1 by bolts. The main body 1 is provided with a strip hole that extends radially along the main body 1 to correspond to the bolts, so that it can be adjusted according to actual needs and thus accommodate locking round nuts of different diameters; the reinforcing rib 3 is connected between the bent section and the disassembly leg 4.
[0026] In other embodiments, a plurality of reinforcing ribs 3 are provided on the lower surface of the main body 1, each corresponding to a plurality of disassembly legs 4. The reinforcing ribs 3 and disassembly legs 4 are in one-to-one correspondence, enhancing the connection stability of the disassembly legs 4 and effectively preventing deformation or damage to the tooling due to excessive force during disassembly, thus ensuring the durability and reliability of the tooling. One end of the reinforcing rib 3 is connected to the center of the lower surface of the main body 1, and the other end is connected to the middle of the disassembly leg 4. Each reinforcing rib 3 includes two rib plates, which are respectively fixed to both sides of the disassembly leg 4.
[0027] One end of the reinforcing rib 3 is connected to the center of the lower surface of the main body 1, and the other end is connected to the middle of the disassembly leg 4. In this embodiment, the disassembly leg 4 is preferably three or four. The even distribution of three or four disassembly legs 4 can ensure the stability of the tooling during the disassembly process, make the force evenly distributed, and avoid damage to the tooling or disassembly failure due to uneven force.
[0028] To ensure connection strength, the same reinforcing rib 3 includes two rib plates, which are fixed to both sides of the detachable support leg 4.
[0029] In this embodiment, the disassembly leg 4 is an arc-shaped steel plate. The arc shape corresponding to the inner side of the disassembly leg 4 matches the arc shape corresponding to the inner wall of the snap-fit notch. This fitting arc design can further enhance the stability of the snap-fit and improve the force transmission efficiency during the disassembly process.
[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be within the scope of protection of the pending claims of the present utility model.
Claims
1. A road roller front decelerator dismounting tool characterized by comprising: include: The main body is disc-shaped, and its diameter is adapted to the diameter of the locking nut of the reducer. A cannon nut is provided at the center of the upper surface of the main body. The support legs are disassembled. The disassembled support legs are evenly distributed around the circumference of the main body, and the disassembled support legs correspond to the snap-fit notches on the outer circumference of the locking round nuts.
2. The road roller front decelerator dismounting tool according to claim 1, characterized by Multiple detachable outriggers have corresponding snap-fit plates extending from the same side at their ends, and the snap-fit plates are adapted to snap-fit notches.
3. The road roller front decelerator dismounting tool according to claim 2, characterized by The snap-fit plate is located on the clockwise side of the detachable support leg.
4. The road roller front decelerator dismounting tool according to claim 1, characterized by The lower surface of the main body is provided with a plurality of reinforcing ribs that are respectively connected to a plurality of the detachable legs. One end of the reinforcing rib is connected to the center of the lower surface of the main body, and the other end is connected to the middle of the detachable leg.
5. The disassembly fixture for the front reducer of a road roller according to claim 4, characterized in that, The same reinforcing rib includes two rib plates, which are respectively fixed on both sides of the detachable outrigger.
6. The disassembly fixture for the front reducer of a road roller according to claim 1, characterized in that, The number of detachable support legs is three.
7. The disassembly fixture for the front reducer of a road roller according to claim 1, characterized in that, The detachable support leg is an arc-shaped steel plate, and the arc shape corresponding to the inner side of the detachable support leg matches the arc shape corresponding to the inner wall of the snap-fit notch.
8. The disassembly fixture for the front reducer of a road roller according to claim 1, characterized in that, The upper end of the detachable support leg is provided with a bent portion extending toward the center of the main body. The bent portion extends radially along the main body and is fixed to its lower surface.