A bearing and ring dismounting device in a gearbox housing

Abstract

The utility model discloses a kind of bearing and ring dismounting device in gear box body, it is related to the technical field of dismounting tool.The utility model includes an inner ring, its outer side wall is equipped with the clamping groove of axial extension;Multiple pull claws, its lower end is provided with the boss extending inwards, the boss is suitable for stretching into the bottom of the ring part to be dismounted, and its upper end is equipped with the protrusion matched with the clamping groove of the inner ring.The utility model is through the modularization gripping mechanism of inner ring, pull claw and outer hoop ring, combined with the force system of hydraulic oil cylinder and screw rod, successfully realized the accurate, single dismounting of internal specific bearing or ring part without dismounting gear box body and axle.The device structure is compact, solve the operation problem in narrow space, easy to operate, greatly reduce the dependence and operating strength to large special equipment, effectively avoid the secondary damage to parts in dismounting process, significantly improve the maintenance efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the field of disassembly tools, specifically to a bearing and ring disassembly device inside a gearbox housing. Background Technology

[0002] As a key transmission component in fields such as rail transportation, wind power generation, and heavy machinery, gearboxes are prone to wear and fatigue problems after long-term operation of their internal bearings and ring-shaped parts, requiring regular maintenance or replacement.

[0003] Currently, most gearboxes adopt an integrated housing structure, which is compact and has good rigidity. However, during maintenance, due to the small internal space and tight assembly of parts, especially when bearings or rings are installed on the axle and the housing cannot be disassembled as a whole, conventional tools are difficult to apply force directly, which brings great difficulties to the disassembly of local parts.

[0004] Existing disassembly methods typically involve pushing the entire axle out of the housing before disassembling the remaining components. This method is not only complex and time-consuming, but also requires large hydraulic equipment, resulting in high labor intensity and costs. More importantly, it cannot achieve targeted disassembly of individual bearings or rings within the housing, easily causing secondary damage to other intact components. Furthermore, it requires ample operating space and equipment, limiting its application efficiency in field or space-constrained environments.

[0005] Therefore, a bearing and ring disassembly device for the gearbox housing is proposed. Utility Model Content

[0006] The purpose of this utility model is to provide a bearing and ring disassembly device inside a gearbox housing in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution: A bearing and ring disassembly device for a gearbox housing includes an inner ring with an axially extending groove on its outer side wall. Multiple pull claws, each with an inwardly extending boss at its lower end, the boss being adapted to extend into the bottom of the ring part to be disassembled, and a protrusion at its upper end that engages with the groove of the inner ring. An outer clamping ring is fitted over the outside of the plurality of pull claws for radially clamping the pull claws; A force-applying mechanism for providing an axial pulling force to pull the inner ring and the pull claw off the axle; A hook, through which the force-applying mechanism is connected to the inner ring.

[0008] Furthermore, the force-applying mechanism includes a hydraulic cylinder, a top plate, and at least one screw; The hydraulic cylinder is located at the end of the axle; The top plate is positioned opposite to the piston rod of the hydraulic cylinder; The lower end of the screw is connected to the hook, and the upper end passes through the top plate and is locked with a nut.

[0009] Furthermore, the force-applying mechanism also includes a hydraulic cylinder guide rod; The cylinder guide rod passes through the top plate and the hydraulic cylinder, and its lower end is connected to the threaded hole at the end of the axle.

[0010] Furthermore, the inner wall of the inner ring is provided with a slit, and the hook is inserted into the slit.

[0011] Furthermore, there are four pull claws, evenly arranged circumferentially.

[0012] Furthermore, the outer wall of the pull claw is provided with a retaining edge for supporting and positioning the outer hoop ring.

[0013] The beneficial effects of this utility model are as follows: 1. This utility model uses a modular gripping mechanism composed of an inner ring, a pull claw, and an outer hoop ring to directly disassemble specific bearings or ring-like parts installed on the axle without disassembling the gearbox housing and the axle. This solves the technical problem that the traditional method requires the entire axle to be pushed out of the housing to disassemble internal parts, significantly improving maintenance efficiency and making it suitable for space-constrained working environments.

[0014] 2. Compared to traditional methods that require large hydraulic equipment to eject the axle, this invention only requires a conventional hydraulic cylinder in conjunction with a screw, top plate, and other simple mechanisms to complete the disassembly operation. The device has a simple structure, is easy to assemble and disassemble, significantly reduces reliance on specialized large equipment, reduces the workload of operators, and effectively avoids secondary damage to components during disassembly through a uniform force distribution design. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional view of the structure of this utility model; Attached reference numerals: 1 Inner ring, 2 Pull claw, 3 Outer ring, 4 Hook, 5 Screw, 6 Hydraulic cylinder, 7 Top plate, 8 Nut, 9 Hydraulic cylinder guide rod, 10 Ring part, 11 Axle, 12 Box body. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0019] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] like Figure 1 and Figure 2 As shown, a bearing and ring disassembly device for a gearbox housing includes an inner ring 1, the outer side wall of which is provided with an axially extending groove. Multiple pull claws 2, each having an inwardly extending boss at its lower end, the boss being adapted to extend into the bottom of the ring part 10 to be disassembled, and a protrusion at its upper end that engages with the groove of the inner ring 1. An outer clamping ring 3 is fitted around the outside of multiple pull claws 2 and is used to clamp the pull claws 2 in the radial direction; A force-applying mechanism for providing an axial pulling force to pull the inner ring 1 and the pull claw 2 off the axle 11; A hook 4 is provided, through which the force-applying mechanism is connected to the inner ring 1.

[0021] The combination of the inner ring 1, pull claws 2, and outer clamping ring 3 forms an actuator capable of gripping and pulling parts from the inside. During disassembly, the operator first inserts the inner ring 1 onto the axle 11, then places multiple pull claws 2 inside the housing 12, with their lower protrusions hooking onto the bottom edge of the ring part 10 to be disassembled. Next, the protrusions at the upper ends of the pull claws 2 are inserted into the slots on the outer side of the inner ring 1, and then the outer clamping ring 3 is fitted on. The clamping action of the outer clamping ring 3 prevents the pull claws 2 from spreading outwards under force, ensuring that the pull claws 2, the inner ring 1, and the part to be disassembled are reliably connected as a whole. Finally, the force-applying mechanism is connected to the inner ring 1 via the hook 4 and applies axial tension, thereby smoothly pulling the part off the axle 11.

[0022] The force-applying mechanism includes a hydraulic cylinder 6, a top plate 7, and at least one screw 5; The hydraulic cylinder 6 is located at the end of the axle 11; The top plate 7 and the piston rod of the hydraulic cylinder 6 are arranged opposite each other; The lower end of the screw 5 is connected to the hook 4, and the upper end passes through the top plate 7 and is locked by the nut 8.

[0023] Hydraulic cylinder 6 serves as the power source, with its cylinder body abutting against the end of axle 11 to provide reaction force support. Top plate 7 is opposite the piston rod of the cylinder, serving as the force-bearing plane. When pulling is required, hydraulic cylinder 6 is activated, its piston rod extending and pushing against top plate 7. At this time, screw 5, locked to top plate 7 by nut 8, receives an outward pulling force. This force is transmitted to inner ring 1 through hook 4, thereby driving the entire pulling mechanism and the parts to be disassembled to move outward from axle 11. The hydraulic cylinder 6 provides a large and controllable pulling force, while the cooperation between screw 5 and nut 8 ensures reliable force transmission and locking.

[0024] The force-applying mechanism also includes the hydraulic cylinder guide rod 9; The cylinder guide rod 9 passes through the top plate 7 and the hydraulic cylinder 6, and its lower end is connected to the threaded hole at the end of the axle 11.

[0025] The hydraulic cylinder guide rod 9 passes through the top plate 7 and the hydraulic cylinder 6, and is directly fixed to the end of the axle 11 by the thread at its lower end, thus providing a stable guide and support frame for the hydraulic cylinder 6 and the top plate 7. This effectively prevents the top plate 7 from tilting or the hydraulic cylinder 6 from shifting during the pulling process, ensuring that the applied pulling force is strictly along the axis of the axle 11, avoiding damage to parts or tooling due to uneven loading, and also ensuring operational safety.

[0026] The inner wall of the inner ring 1 has a slit, and the hook 4 is inserted into the slit.

[0027] The cutout on the inner wall of the inner ring 1 provides a simple and reliable connection interface for the hook 4. The hook 4 can be directly inserted into this cutout, enabling a quick connection between the force-applying mechanism and the inner ring 1. This connection method eliminates the need for complex threaded fasteners or other additional parts, making assembly and disassembly convenient. Furthermore, it effectively transmits axial tensile force from the hook 4 to the center of the inner ring 1, ensuring uniform force distribution.

[0028] There are four pull claws 2, which are evenly arranged circumferentially.

[0029] By setting four claws 2 and distributing them evenly along the circumference, it is ensured that the circumferential force is uniform when pulling the annular part, avoiding jamming or damage to the part due to excessive force on one side. The four claws 2 together form a stable gripping system that can provide sufficient gripping force and is well adapted to the structure of common bearings, gears and other parts.

[0030] The outer wall of the pull claw 2 is provided with a retaining edge for supporting and positioning the outer clamping ring 3. This retaining edge structure on the outer wall of the pull claw 2 serves both limiting and supporting functions. When the outer clamping ring 3 is fitted onto the outside of the pull claw 2, this retaining edge prevents the outer clamping ring 3 from sliding axially downwards, ensuring that the outer clamping ring 3 is always in the correct working position, thus reliably fulfilling its function of clamping the pull claw 2. This not only simplifies the assembly process but also improves the stability and reliability of the entire tooling in its working state. In summary, this utility model, through its modular gripping mechanism composed of an inner ring, claws, and an outer clamping ring, enables the direct disassembly of specific bearings or ring-like parts mounted on the axle without disassembling the gearbox housing and axle. This solves the technical problem of traditional methods that require the entire axle to be pushed out of the housing to disassemble internal parts, significantly improving maintenance efficiency and making it suitable for space-constrained working environments. Compared to traditional methods that require large hydraulic equipment to push out the axle, this utility model only requires a conventional hydraulic cylinder in conjunction with a screw, top plate, and other simple mechanisms to complete the disassembly operation. The device has a simple structure, is easy to assemble and disassemble, greatly reduces reliance on specialized large equipment, reduces the workload of operators, and effectively avoids secondary damage to components during disassembly through a uniform force distribution design.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A bearing and ring disassembly device for a gearbox housing, characterized in that, It includes an inner ring (1) with an axially extending groove on its outer side wall; Multiple pull claws (2) are provided with an inwardly extending boss at their lower ends. The boss is adapted to extend into the bottom of the ring part (10) to be disassembled, and its upper end is provided with a protrusion that cooperates with the groove of the inner ring (1). An outer clamping ring (3) is fitted over the outside of the plurality of pull claws (2) for radially clamping the pull claws (2). A force-applying mechanism for providing an axial pulling force to pull the inner ring (1) and the claw (2) off the axle (11); A hook (4) is provided, through which the force-applying mechanism is connected to the inner ring (1).

2. The bearing and ring disassembly device inside a gearbox housing according to claim 1, characterized in that, The force-applying mechanism includes a hydraulic cylinder (6), a top plate (7), and at least one screw (5); The hydraulic cylinder (6) is located at the end of the axle (11); The top plate (7) is arranged opposite to the piston rod of the hydraulic cylinder (6); The lower end of the screw (5) is connected to the hook (4), and the upper end passes through the top plate (7) and is locked by the nut (8).

3. The bearing and ring disassembly device inside a gearbox housing according to claim 2, characterized in that, The force application mechanism also includes a hydraulic cylinder guide rod (9). The cylinder guide rod (9) passes through the top plate (7) and the hydraulic cylinder (6), and its lower end is connected to the threaded hole at the end of the axle (11).

4. A bearing and ring disassembly device for a gearbox housing according to claim 1 or 2, characterized in that, The inner wall of the inner ring (1) has a cut, and the hook (4) is inserted into the cut.

5. A bearing and ring disassembly device for a gearbox housing according to claim 1, characterized in that, The number of the pull claws (2) is four, which are evenly arranged in the circumferential direction.

6. A bearing and ring disassembly device for a gearbox housing according to claim 1, characterized in that, The outer side wall of the pull claw (2) is provided with a retaining edge for supporting and positioning the outer hoop ring (3).

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