Oil seal disassembling tool

Abstract

The utility model relates to the technical field of driving motor speed reducer assembling tools, and discloses an oil seal disassembling tool which comprises at least two detachable hook claw fixing pieces. The hook claw part of each hook claw fixing piece is used for hooking the inner side contact face of the oil seal to be disassembled when the rod-shaped part arranged at one end of the hook claw part is spliced to form a connecting rod with the section being a whole circle, the first end of the positioning supporting sleeve abuts against an installation machine shell of the oil seal to be disassembled, and a bottom plate is arranged at the second end, opposite to the first end, of the positioning supporting sleeve. The bottom plate is provided with a through hole for the connecting rod to penetrate out, the connecting rod is provided with a rotating piece matched with the connecting rod in a threaded mode, the rotating piece and the bottom plate are in stopping fit, the rotating piece can be rotated to drive the hook claw fixing piece to move in the direction facing the second end of the positioning supporting sleeve, and the disassembling tool can achieve lossless disassembling of the oil seal.

Description

Technical Field

[0001] The utility model relates to the technical field of driving motor reducer assembly tools, and particularly relates to an oil seal disassembly tooling fixture. Background Art

[0002] Among the numerous components of a driving motor reducer, the oil seal, as a key component for preventing lubricating oil leakage, is of self-evident importance.

[0003] As a vulnerable part, during the R & D period, damage during the disassembly process of the oil seal will lead to the inability to conduct accurate and effective data analysis and troubleshooting of abnormal points. Traditional oil seal disassembly methods mostly use manual tools such as flat-tip screwdrivers and open-end wrenches, and are disassembled through the principle of a fulcrum-assisted lever. Although this method is easy to operate, it often has problems such as difficulty in precisely controlling the disassembly force and being prone to damaging the oil seal. In addition, there are also some mature oil seal removal tooling fixtures on the market, but most of these tooling fixtures can only achieve the function of removing the oil seal and cannot ensure the non-destructiveness of the disassembly process. This means that after disassembly, the integrity of the oil seal may be damaged, unable to accurately reflect its true state during use, and thus affecting the analysis and evaluation of the overall performance of the reducer. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the problem that the oil seal of a driving motor reducer is extremely vulnerable to damage during the removal process in the prior art, and to provide an oil seal disassembly tooling fixture that ensures no damage to the oil seal during the disassembly process, facilitates subsequent data collection and abnormal point analysis, and improves product quality.

[0005] To achieve the above purpose, the utility model provides an oil seal disassembly tooling fixture, including:

[0006] At least two claw fixing members, each of the claw fixing members includes a rod-shaped portion and a claw portion provided at one end of the rod-shaped portion, and the claw portion is used to hook the inner contact surface of the oil seal to be disassembled when the rod-shaped portions of the at least two claw fixing members are spliced to form a connecting rod with a circular cross-section; and a positioning support sleeve, the first end of the positioning support sleeve abuts against the installation housing of the oil seal to be disassembled, a bottom plate is provided at the second end of the positioning support sleeve opposite to the first end, a through hole is provided on the bottom plate for the connecting rod to pass through, a rotating member in threaded cooperation with the connecting rod is provided on the connecting rod, and the rotating member forms a stop fit with the bottom plate and can drive the claw fixing member to move in the direction towards the second end of the positioning support sleeve by rotating the rotating member.

[0007] Optionally, the number of the claw fixing members is two, three or four.

[0008] Optionally, a thread is provided on the rod body of the rod-shaped portion close to the hook portion for screwing into a first nut, and the first nut is used to lock and fix the spliced ​​state of the at least two hook fixing members.

[0009] Optionally, the positioning support sleeve is provided with an operating hole that can penetrate inside and outside.

[0010] Optionally, the first end of the positioning support sleeve is provided with a notch extending along the length direction thereof, and the notch avoids the hook portion of the hook fixing member.

[0011] Optionally, a step portion is provided at one end of the positioning support sleeve close to the hook portion.

[0012] Optionally, the positioning support sleeve includes a cylindrical barrel and a truncated cone barrel arranged in sequence from the first end to the second end.

[0013] Optionally, the rotating member includes a second nut, and the second nut is threadably engaged with the connecting rod.

[0014] Optionally, the rotating member further includes a rotating rod, one end of which is fixed to the second nut and the other end of which is extended outwardly.

[0015] Optionally, the rotating rod is detachably connected to the second nut.

[0016] Through the above technical scheme, during the disassembly of the oil seal, the positioning support sleeve can firmly rest on the mounting casing of the oil seal, providing a stable support platform for the disassembly operation. The through hole arranged on the bottom plate and the stop structure cooperating with the rotating part provide necessary guidance and support for the connecting rod. The hook fixing part is driven to move in a specific direction by rotating the rotating part, making the disassembly operation more labor-saving and easy to control. At least two hook fixing parts have hook parts that can accurately and firmly hook the inner contact surface of the oil seal to be disassembled, reducing the risk of damage to the oil seal and its surrounding components during the disassembly process, while ensuring that the oil seal is subjected to uniform and well-controlled tension, ensuring the integrity of the oil seal structure and achieving the purpose of non-destructive disassembly of the oil seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an oil seal disassembly tool provided by the utility model;

[0018] Figure 2 It is a cross-sectional view of an oil seal disassembly tool provided by the utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the hook fixing member in the utility model;

[0020] Figure 4It is a schematic structural diagram of the positioning support sleeve in the present utility model.

[0021] Description of the reference numerals

[0022] 1. Claw fixing member; 11. Connecting rod; 111. Rod-shaped portion; 12. Claw portion; 2. Positioning support sleeve; 21. Bottom plate; 22. Through hole; 23. Operation hole; 24. Notch portion; 25. Step portion; 3. Rotating member; 31. Second nut; 32. Rotating rod; 4. First nut. Specific embodiments

[0023] The following will describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustration and explanation of the present utility model, and are not intended to limit the present utility model.

[0024] It should be noted that the "first", "second" and similar terms used in the present utility model do not indicate any order, quantity or importance, but are only used to distinguish different parts. Words such as "comprising" or "including" mean that the elements before this word cover the elements listed after this word, and do not exclude the possibility of also covering other elements.

[0025] Combined with Figures 1-4 As shown, the present utility model provides an oil seal disassembly tooling, including: at least two claw fixing members 1, each of the claw fixing members 1 includes a rod-shaped portion 111 and a claw portion 12 provided at one end of the rod-shaped portion 111, and the claw portion 12 is used to hook the inner contact surface of the oil seal to be disassembled when the rod-shaped portions 111 of the at least two claw fixing members 1 are spliced to form a connecting rod 11 with a circular cross-section; and a positioning support sleeve 2, the first end of the positioning support sleeve 2 abuts against the installation housing of the oil seal to be disassembled, a bottom plate 21 is provided on the second end of the positioning support sleeve 2 opposite to the first end, a through hole 22 is provided on the bottom plate 21 for the connecting rod 11 to pass through, a rotating member 3 is provided on the connecting rod 11 and is in threaded cooperation with the connecting rod 11, and the rotating member 3 forms a stop fit with the bottom plate 21 and can drive the claw fixing member 1 to move in the direction towards the second end of the positioning support sleeve 2 by rotating the rotating member 3.

[0026] By designing at least two claw fixing members 1, the claw portions 12 thereon can accurately and firmly hook the inner contact surface of the oil seal to be disassembled. Compared with traditional manual or simple tool disassembly, it fully considers the protection of the contact surface of the oil seal for the later assembly of the half shaft, and at the same time ensures that the oil seal receives uniform and well-controlled tensile force, ensuring the integrity of the oil seal structure and achieving the purpose of disassembling the oil seal without damage.

[0027] It can be understood that the rod-shaped portions 111 of at least two claw fixing members 1 are spliced to form a connecting rod 11 with a circular cross-section, which can ensure that the claw portions 12 of each claw fixing member 1 can pass through the central shaft hole of the oil seal to be disassembled and can be evenly and precisely distributed on the inner contact surface of the oil seal to be hooked. The connecting rod 11 serves as the support and connection structure for all the claw fixing members 1. When the rotating member 3 on the connecting rod 11 is rotated to drive the claw fixing members 1 to move in the direction towards the second end of the positioning support sleeve 2, since the connecting rod 11 is circular, it can evenly transmit force to each claw portion 12. In this way, each claw portion 12 can simultaneously and evenly apply force to the inner contact surface of the oil seal, thereby realizing the effective disassembly of the oil seal and minimizing the damage to the oil seal structure to the greatest extent.

[0028] The design of the positioning support sleeve 2 enables the oil seal disassembly tooling to stably abut against the installation housing of the oil seal during the disassembly process, providing a stable support platform for the disassembly operation. At the same time, the through holes 22 provided on the bottom plate 21 and the stop structure cooperating with the rotating member 3 ensure the stability of the connecting rod 11 during the rotation drive process.

[0029] Specifically, the claw fixing member 1 can be provided with two, three or four. In the present utility model, Figure 3 As shown, three claw fixing members 1 are combined together.

[0030] It can be understood that different oil seal sizes and shapes may require different numbers of claw fixing members 1 to ensure stable disassembly. As the number of claw fixing members 1 increases, the number of contact points between the tooling and the inner contact surface of the oil seal also increases correspondingly. This helps to more evenly distribute the disassembly force, reduce the situation of excessive single-point stress, thereby improving the disassembly efficiency and reducing the risk of damage to the oil seal structure.

[0031] In an environment with limited space, it is more inclined to use a smaller number of claw fixing members 1 to reduce the volume and weight of the tooling; while in a scenario where higher disassembly accuracy is required, the number of claw fixing members 1 can be increased to improve the stability and accuracy of disassembly. Therefore, providing options for different numbers of claw fixing members 1 enables the operator to make a flexible choice according to actual needs.

[0032] In the present utility model, as Figure 3 shown, threads are provided on the rod body of the rod-shaped portion 111 near the claw portion 12 for screwing into the first nut 4, and the first nut 4 is used to lock and fix the splicing state of at least two claw fixing members 1.

[0033] By setting a thread on the rod-shaped portion 111 and screwing in the first nut 4, it can be ensured that at least two hook fixing members 1 can achieve a firm fixing effect when spliced. The threaded connection method makes the installation and disassembly process easier and faster. The operator only needs to rotate the nut to lock or loosen the fixing member without using complicated tools or performing cumbersome operating steps.

[0034] In the present utility model, if Figure 4 As shown, the positioning support sleeve 2 is provided with an operating hole 23 which can penetrate inside and outside.

[0035] The design of the operation hole 23 allows the operator to conveniently adjust the internal components through the hole, for example, tighten the loose first nut 4, and observe the disassembly progress of the oil seal through the hole without completely disassembling the entire support sleeve. In addition, under the premise of maintaining the structural strength and stability of the positioning support sleeve 2, the design of the operation hole 23 can reduce the overall weight of the support sleeve to a certain extent. Through reasonable hole layout and size design, materials can be used more effectively and unnecessary material consumption can be reduced, thereby achieving the purpose of lightweighting.

[0036] In the present utility model, if Figure 4 As shown, the first end of the positioning support sleeve 2 is provided with a notch portion 24 extending along the length direction thereof, and the notch portion 24 avoids the hook portion 12 of the hook fixing member 1 .

[0037] The setting of the notch 24 enables the positioning support sleeve 2 to avoid direct interference with the hook portion 12 when cooperating with the hook fixing member 1, so that the positioning support sleeve 2 can adapt to hook portions 12 of different shapes and sizes, which helps to achieve more accurate positioning. When it is necessary to install or remove the hook fixing member 1, the notch 24 provides more operating space for the operator. In addition, a reasonable design of the notch 24 can reduce the stress concentration phenomenon generated during the force application process to a certain extent.

[0038] In the present utility model, if Figure 4 As shown, a step portion 25 is provided at one end of the positioning support sleeve 2 close to the hook portion 12 .

[0039] The setting of the step portion 25 facilitates the placement of the positioning support sleeve 2 into the reducer output shaft oil seal mounting boss, avoids interference from the local ribs of the reducer, helps to achieve accurate positioning and fixation of the positioning support sleeve 2, and simplifies the installation process to a certain extent.

[0040] In the present utility model, if Figure 4 As shown, the positioning support sleeve 2 includes a cylindrical barrel and a truncated cone barrel which are sequentially arranged from the first end to the second end.

[0041] It can be understood that the housing of the positioning support sleeve 2 can be of any suitable structure, and some auxiliary installation structural elements for simplifying the installation process and reducing the installation difficulty can be provided on the housing, such as guide surfaces, positioning grooves, step surfaces, etc. In the present utility model, considering the shape of the installation surface of the oil seal housing to be disassembled, the positioning support sleeve 2 is designed to be a structure that smoothly transitions from a cylindrical barrel to a frustum-shaped barrel. This design can reduce stress concentration points and enhance the structural stability of the entire support sleeve.

[0042] In the present utility model, as Figure 2 shown, the rotating member 3 includes a second nut 31, and the second nut 31 is in threaded cooperation with the connecting rod 11; further, the rotating member 3 further includes a rotating rod 32, one end of the rotating rod 32 is fixed on the second nut 31, and the other end extends outward; preferably, the rotating rod 32 is detachably connected to the second nut 31.

[0043] Through the design of the rotating rod 32, the user can rotate the second nut 31 more easily, thereby adjusting the position or tightening degree of the connecting rod 11, thus avoiding the space limitation or inconvenience that may be encountered when directly operating the nut, and improving the operation convenience; the detachable connection between the rotating rod 32 and the second nut 31 allows the user to quickly disassemble the rotating member 3 according to needs, facilitating the maintenance or replacement of the device.

[0044] It can be understood that the structure of the rotating rod 32 can be of any suitable structure, can be of any suitable shape, or can also be set as a multi-section rotating rod 32 that can flexibly expand and contract or adjust its length, etc.

[0045] In summary, the specific working process of an embodiment provided by the present utility model is as follows:

[0046] Fix the three claw fixing parts 1 after uniform dissection into the gap at the rear of the oil seal lip of the reducer output shaft in sequence according to their own marks. After combination, ensure that the claw parts 12 of the three claw fixing parts 1 are in contact with the inner contact surface of the oil seal to be disassembled. Sleeve the first nut 4 onto the connecting rod 11 of the combined claw fixing parts 1 to the bottom thread position. After installing the first nut 4, lock and tighten the three claw fixing parts 1. The nut joints should ensure mutual locking to avoid obvious shaking of the dissected connecting rod 11, which will affect subsequent assembly. During the assembly process, the operator should avoid incorrect assembly order of the dissected claw fixing parts 1, otherwise the corresponding installation of the first nut 4 will not be able to be normally screwed into the thread of the connecting rod 11;

[0047] After the claw fixing part 1 is placed and fastened, the operator puts the positioning support sleeve 2 into the oil seal installation boss of the reducer output shaft, avoiding interference with the local rib plates of the reducer. The connecting rod 11 extends out from the through hole 22 of the positioning support sleeve 2. The second nut 31 is screwed onto the threaded part of the connecting rod 11 exposed from the bottom plate 21. After pre-tightening, the whole set of tooling is assembled. Subsequently, as the second nut 31 is continuously screwed in, a pulling force is generated on the connecting rod 11, and the connecting rod 11 will drive the oil seal at the bottom to rise together until the oil seal is removed from the oil seal installation hole of the reducer, completing the oil seal disassembly work.

[0048] Through the description of an embodiment of the present utility model, it can be seen that the present utility model has the following advantages:

[0049] First, through the rotating part 3 designed on the positioning support sleeve 2, the function of generating a pulling force by simply rotating is realized. The assembly is simple, the operation is convenient, and the labor intensity of the operator is effectively reduced. At the same time, the fast and efficient assembly process significantly improves the work efficiency.

[0050] Second, the manufacturing cost is low. In the early stage of product development, this low-cost manufacturing advantage makes data collection and anomaly analysis easier and more frequent, which helps to detect and solve problems in a timely manner, thereby improving the overall quality and reliability of the product. In addition, frequent data feedback also accelerates the iterative optimization of the product and promotes the continuous improvement of product performance.

[0051] Third, aiming at the requirement of oil seal disassembly, this design cleverly adopts the combination of two main parts and two nuts to achieve a simple but efficient disassembly solution, which is easy to implement and maintain, and reduces the procurement cost to a certain extent.

[0052] The preferred embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited thereto. Within the technical concept scope of the present utility model, various simple modifications can be made to the technical solutions of the present utility model, including the combination of each specific technical feature in any suitable way. To avoid unnecessary repetition, the present utility model will not separately describe various possible combination methods. But these simple modifications and combinations should also be regarded as the content disclosed by the present utility model and all fall within the protection scope of the present utility model.

Claims

1. An oil seal disassembly tool, characterized in that: include: At least two hook fixing members (1), each of the hook fixing members (1) comprising a rod-shaped portion (111) and a hook portion (12) arranged at one end of the rod-shaped portion (111), the hook portion (12) being used to hook the inner contact surface of the oil seal to be disassembled when the rod-shaped portions (111) of the at least two hook fixing members (1) are spliced ​​to form a connecting rod (11) with a full circular cross section; and A positioning support sleeve (2), wherein the first end of the positioning support sleeve (2) abuts against the mounting housing of the oil seal to be disassembled, and a base plate (21) is provided on the second end of the positioning support sleeve (2) opposite to the first end, and a through hole (22) is provided on the base plate (21) for the connecting rod (11) to pass through, and a rotating member (3) threadedly engaged with the connecting rod (11) is provided on the connecting rod (11), and the rotating member (3) forms a stop engagement with the base plate (21) and can drive the hook fixing member (1) to move in a direction toward the second end of the positioning support sleeve (2) by rotating the rotating member (3).

2. The oil seal disassembly tool according to claim 1, characterized in that: The hook fixing members (1) are provided with two, three or four.

3. The oil seal disassembly tool according to claim 1, characterized in that: A thread is provided on the rod body of the rod-shaped portion (111) close to the hook portion (12) for screwing into a first nut (4), and the first nut (4) is used to lock and fix the spliced ​​state of the at least two hook fixing members (1).

4. The oil seal disassembly tool according to claim 3, characterized in that: The positioning support sleeve (2) is provided with an operating hole (23) capable of penetrating inside and outside.

5. The oil seal disassembly tool according to claim 1, characterized in that: The first end of the positioning support sleeve (2) is provided with a notch portion (24) extending along its length direction, and the notch portion (24) avoids the hook portion (12) of the hook fixing member (1).

6. The oil seal disassembly tool according to claim 1, characterized in that: A step portion (25) is provided at one end of the positioning support sleeve (2) close to the hook portion (12).

7. The oil seal disassembly tool according to claim 1, characterized in that: The positioning support sleeve (2) comprises a cylindrical barrel and a truncated cone barrel which are arranged in sequence from the first end to the second end.

8. The oil seal disassembly tool according to claim 1, characterized in that: The rotating member (3) comprises a second nut (31), and the second nut (31) is threadably matched with the connecting rod (11).

9. The oil seal disassembly tool according to claim 8, characterized in that: The rotating member (3) further comprises a rotating rod (32), one end of which is fixed on the second nut (31) and the other end of which is extended outwards.

10. The oil seal disassembly tool according to claim 9, characterized in that: The rotating rod (32) is detachably connected to the second nut (31).

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