Oil seal disassembly device

Abstract

The present invention provides an oil seal disassembly device, including a pull rod, a support frame, a tension adjustment tube, a limit ring and an elastic component. The support frame is sleeved outside the pull rod, and the support frame includes at least two tension arms and at least two cutting edges. The tension arm has a fixed end and a free end. The fixed ends of all tension arms are fixedly connected together, and the free ends of all tension arms are separately arranged and fixedly connected with corresponding cutting edges; the tension adjustment tube is sleeved outside the pull rod and arranged close to the free ends of the tension arms, and the tension adjustment tube can move between all tension arms along the length direction of the pull rod and can be automatically locked; the limit ring is sleeved outside at least two tension arms; the elastic component is fixedly connected to the pull rod and arranged close to the fixed ends of the tension arms, and the elastic component makes the limit ring have a tendency to move from the fixed end to the free end. The oil seal disassembly device of the present invention has the advantages of less time consumption and high working efficiency, and will not cause damage to equipment or oil seals, which is conducive to reducing costs.

Description

Technical Field

[0001] The invention belongs to the technical field of nuclear power plant maintenance, and more specifically, relates to an oil seal disassembly device. Background Art

[0002] In the process of nuclear power overhaul of precision rotating mechanical equipment, there are many operations involving oil seal operation. Oil seals occupy a very important position in the operation of precision rotating mechanical equipment in nuclear power plants. As long as there is lubricating oil in the rotating machinery, oil seals are indispensable, such as diesel engine power output shaft, starting gear shaft, various gearbox power output shafts, water pump oil tank, fan bearing seat, gearbox operating lever shaft, electric valve motor rotor, etc. According to the requirements of each functional position, oil seals of various sizes are selected. Oil seals are a consumable and a replaceable product. Therefore, replacing oil seals is a very important task in related work. It has a strong skill. Any negligence will damage the oil seal or destroy the sealing surface of the equipment body, causing irreparable damage to the equipment body. The operation of replacing oil seals is to replace the equipment to achieve the specified function, that is, the rotating part is flexible but does not leak oil. Doing a good job in replacing oil seals is of great significance to extending the service life of equipment, ensuring the safe operation of various systems, and giving full play to its effectiveness.

[0003] At present, there are two situations in the process of oil seal disassembly:

[0004] (1) For slightly larger diameters (greater than 50mm) and shallow oil seal chambers with installation positions close to the end faces, that is, the installation of the axial mounting surface of the oil seal back can be seen from the inside of the oil seal. In this case, the operator first uses a small flat-blade screwdriver (the blade of a small flat-blade screwdriver is relatively thin, which is convenient for insertion) to insert the oil seal back mounting surface obliquely through the inside of the oil seal, and then gently rotate the screwdriver to create a gap between the oil seal and the mounting surface. This action requires the operator to operate carefully and not to apply the force of the screwdriver to the main body of the equipment on the mounting surface, so as to avoid scratching the main body of the equipment and causing oil leakage; then use a slightly larger flat-blade screwdriver to insert and rotate until the oil seal is completely removed from the oil seal chamber. The whole process uses a screwdriver to pry hard. Because the screwdriver material is tool steel, the material is relatively hard, it is easy to scratch the equipment body (some equipment bodies are made of aluminum materials, which is more risky), causing irreparable losses. The screwdriver pries back and forth, which takes a long time and cannot be successful at one time. The pulled oil seal will be permanently damaged, which is not conducive to the judgment of the fault location.

[0005] (2) For a slightly smaller diameter (less than 50mm) and a deeper oil seal chamber, that is, the installation of the axial mounting surface on the back of the oil seal cannot be seen visually, in this case, the operator needs to use a steel "7"-shaped hook to reach inside, and forcefully insert the tip of the hook into the mounting surface on the back of the oil seal, insert a little and then pull a little, change the position and insert and pull again, until the entire oil seal is removed from the oil seal chamber. The entire process uses a steel hook to pull and pull hard. The steel hook is made of a harder material and can easily scratch the equipment body (some equipment bodies are made of aluminum materials, which is more risky), causing irreparable losses, and it takes a long time to pull back and forth.

[0006] In summary, the existing method of disassembling the oil seal is time-consuming, easily causes damage to the equipment body, and also causes damage to the disassembled oil seal, which is not conducive to reducing costs and has low operating efficiency. Summary of the invention

[0007] The purpose of the embodiment of the present invention is to provide an oil seal disassembly device to solve the technical problems in the prior art that the method for disassembling the oil seal is time-consuming, easily causes damage to the equipment body or the oil seal, is not conducive to reducing costs, and has low operating efficiency.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is: to provide an oil seal disassembly device, comprising:

[0009] Pull rod;

[0010] A support frame, sleeved outside the pull rod, the support frame includes at least two tension arms and at least two cutting edges, the tension arm has a fixed end and a free end, the fixed ends of all the tension arms are fixedly connected together, and the free ends of all the tension arms are separately arranged and fixedly connected with the corresponding cutting edges;

[0011] A tension adjustment tube is sleeved outside the pull rod and is arranged near the free end of the tension arm. The tension adjustment tube can move between all the tension arms along the length direction of the pull rod and can be automatically locked;

[0012] a limiting ring, sleeved outside at least two of the tension arms; and

[0013] An elastic component is fixedly connected to the pull rod and arranged close to the fixed end of the tension arm. The elastic component abuts against the limiting ring, so that the limiting ring has a tendency to move from the fixed end to the free end.

[0014] In one embodiment, the pull rod includes a first threaded section, and the tension-adjusting tube is threadedly engaged with the first threaded section.

[0015] In one embodiment, the pull rod further includes a second threaded segment connected to the first threaded segment, and the elastic component includes a locking nut threadedly engaged with the second threaded segment and an elastic member disposed between the limiting ring and the locking nut.

[0016] In one embodiment, the elastic member is sleeved outside the second thread segment.

[0017] In one embodiment, the elastic member is a spring.

[0018] In one embodiment, the pull rod also includes a tension adjustment section whose two ends are respectively connected to the first thread section and the second thread section, the tension arm is arranged corresponding to the tension adjustment section, and the outer diameter of the tension adjustment section is gradually expanded from the second thread section to the first thread connection section.

[0019] In one embodiment, the pull rod further comprises a handle member connected to an end of the first thread segment away from the second thread segment, and the handle member is provided with a first anti-slip pattern on the outside.

[0020] In one embodiment, the pull rod also includes a sliding section whose two ends are respectively connected to the handle means and the first threaded section, and the oil seal disassembly device also includes an inertia force ring sleeved outside the sliding section, and the inertia force ring can slide along the sliding section, and the inner diameter of the inertia force ring is smaller than the outer diameter of the handle means.

[0021] In one embodiment, the tension adjustment tube is provided with a second anti-slip pattern on the outside.

[0022] In one embodiment, the cutting edge is welded to the free end of the tension arm.

[0023] The working principle of the oil seal disassembly device of the present invention is as follows: first, the position of the tension adjustment tube on the pull rod is adjusted so that the tension adjustment tube is retracted to the cutting edge. At this time, the spacing between the free ends of the tension arms is the smallest; then, the oil seal disassembly device is inserted into the inner side of the oil seal to be disassembled so that the fixed end of the tension arm is located on the inner side of the oil seal to be disassembled, and the tension adjustment tube is slowly moved between all the tension arms. The angles between all the tension arms gradually increase, so that the cutting edge of the free end of the tension arm is embedded in the gap between the oil seal and the equipment. At the same time, due to The angle between all tension arms gradually increases, and the limit ring overcomes the elastic force of the elastic component and gradually moves from the free end to the fixed end; then, slowly pull the pull rod to pull out the oil seal; then, adjust the position of the tension adjustment tube on the pull rod so that the tension adjustment tube returns to the cutting edge. Under the elastic force of the elastic component, the limit ring has a tendency to move from the fixed end to the free end. The limit ring will move toward the free end and shrink all tension arms to a diameter smaller than the oil seal, so as to facilitate the removal of the oil seal removal device from the oil seal. Compared with the prior art, the oil seal removal device of the present invention has a simple structure, a small size, and is easy to operate, that is, the oil seal removal device of the present invention is easy to carry and use, has the advantages of less time consumption and high operating efficiency, and will not cause damage to the equipment body or the oil seal, which is conducive to reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 A schematic diagram of the structure of an oil seal disassembly device provided in an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of the exploded structure of an oil seal disassembly device provided in an embodiment of the present invention.

[0027] Among them, the reference numerals in the figure are:

[0028] 100-pull rod; 110-handle means; 120-sliding section; 130-first threaded section; 140-tension adjustment section; 150-second threaded section; 200-support frame; 210-tension arm; 220-cutting edge; 230-fixing ring; 300-tension adjustment tube; 400-limiting ring; 500-elastic component; 510-locking nut; 520-elastic part; 600-inertia booster ring. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0031] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] See also Figure 1 and Figure 2 An embodiment of the present invention provides an oil seal disassembly device, including a pull rod 100, a support frame 200 and a tension adjustment tube 300. The support frame 200 is sleeved outside the pull rod 100. The support frame 200 includes at least two tension arms 210 and at least two cutting edges 220. The tension arm 210 has a fixed end and a free end. The fixed ends of all tension arms 210 are fixedly connected together. The free ends of all tension arms 210 are separately arranged and fixedly connected with corresponding cutting edges 220. The cutting edges 220 are used to insert into the gap between the oil seal and the equipment; the tension adjustment tube 300 is sleeved outside the pull rod 100 and is arranged close to the free end of the tension arm 210. The tension adjustment tube 300 can move between all tension arms 210 along the length direction of the pull rod 100 and can be automatically locked.

[0034] The principle of removing the oil seal of the oil seal removal device of the embodiment of the present invention is as follows: first, adjust the position of the tension adjustment tube 300 on the pull rod 100 so that the tension adjustment tube 300 is retracted to the cutting edge 220, at which time, the spacing between the free ends of the tension arms 210 is the smallest; then, insert the oil seal removal device into the inner side of the oil seal to be removed so that the fixed end of the tension arm 210 is located at the inner side of the oil seal to be removed, slowly move the tension adjustment tube 300 between all the tension arms 210, and the angle between all the tension arms 210 gradually increases so that the cutting edge 220 of the free end of the tension arm 210 is embedded in the gap between the oil seal and the equipment; finally, slowly pull the pull rod 100 outward to pull out the oil seal. Compared with the prior art, the oil seal removal device of the embodiment of the present invention has a simple structure, a small size, and is easy to operate, that is, the oil seal removal device of the present invention is easy to carry and use, has the advantages of less time consumption and high operating efficiency, and will not cause damage to the equipment body, which is conducive to reducing costs.

[0035] Furthermore, as a specific embodiment of the present invention, the oil seal disassembly device also includes a limit ring 400 and an elastic component 500. The limit ring 400 is sleeved outside at least two tension arms 210. The elastic component 500 is fixedly connected to the pull rod 100 and is arranged close to the fixed end of the tension arm 210. The elastic component 500 abuts against the limit ring 400, so that the limit ring 400 has a tendency to move from the fixed end to the free end.

[0036] The principle of the oil seal removal device of the embodiment of the present invention being withdrawn from the oil seal is as follows: after the oil seal is pulled out of the equipment, the position of the tension adjustment tube 300 on the pull rod 100 is adjusted so that the tension adjustment tube 300 is withdrawn to the cutting edge 220. Under the elastic force of the elastic component 500, the limit ring 400 has a tendency to move from the fixed end to the free end. The limit ring 400 will move toward the free end and shrink all the tension arms 210 to a diameter smaller than the diameter of the oil seal, so as to facilitate the removal of the oil seal removal device from the oil seal. Compared with the prior art, the oil seal removal device of the embodiment of the present invention has a simple structure, a small size, and is easy to operate. That is, the oil seal removal device of the present invention is easy to carry and use, has the advantages of less time consumption and high operating efficiency, and will not cause damage to the equipment body or the oil seal, which is conducive to reducing costs.

[0037] It should be noted that the oil seal removal device is inserted into the inner side of the oil seal to be removed so that the fixed end of the tension arm 210 is located on the inner side of the oil seal to be removed, and the tension adjustment tube 300 is slowly moved between all the tension arms 210. The angles between all the tension arms 210 gradually increase, so that the cutting edge 220 at the free end of the tension arm 210 is embedded in the gap between the oil seal and the equipment. At the same time, since the angles between all the tension arms 210 gradually increase, the limit ring 400 will overcome the elastic force of the elastic component 500 and gradually move from the free end toward the fixed end.

[0038] Further, as an optional embodiment of the present invention, the tie rod 100 may be a steel part, specifically a carbon steel part or a stainless steel part, which has high mechanical strength and can prevent the tie rod 100 from being pulled or broken, thereby effectively improving the service life of the tie rod 100. It is understandable that the material of the tie rod 100 can be appropriately modified according to the actual selection and specific needs, and is not limited here.

[0039] Further, as an optional embodiment of the present invention, the tension arm 210 may be a steel member, which has high mechanical strength, can prevent the tension arm 210 from breaking, and effectively improve the service life of the tension arm 210. It is understandable that the material of the tension arm 210 can be appropriately modified according to the actual situation and specific needs, and is not limited here.

[0040] Further, as an optional embodiment of the present invention, the limit ring 400 can be a steel part, which has high mechanical strength and effectively improves the service life of the limit ring 400. It is understandable that the material of the limit ring 400 can be appropriately modified according to the actual selection and specific needs, and is not limited here.

[0041] Furthermore, as an optional embodiment of the present invention, the cutting edge 220 can be made of copper, which is soft and not easy to scratch the inner wall of the device. It is understandable that the material of the cutting edge 220 can be appropriately modified according to the actual situation and specific needs, and is not limited here.

[0042] Further, as an optional embodiment of the present invention, the width of the cutting edge 220 is 1mm to 5mm, and the length is 5mm to 10mm. For example, the width of the cutting edge 220 is 3mm and the length is 8mm. It can be understood that the size range of the cutting edge 220 can be appropriately adjusted according to actual selection and specific needs, and is not limited here.

[0043] Further, as an optional embodiment of the present invention, the outer diameter of the tension regulating tube 300 is 10 mm to 20 mm, and the length is 40 mm to 60 mm. For example, the outer diameter of the tension regulating tube 300 is 14 mm, and the length is 50 mm. It can be understood that the size range of the tension regulating tube 300 can be appropriately adjusted according to the actual selection and specific needs, and is not limited here.

[0044] Further, as an optional embodiment of the present invention, the inner diameter of the limit ring 400 is 5mm to 15mm, the outer diameter is 10mm to 20mm, and the thickness is 1mm to 5mm. For example, the inner diameter of the limit ring 400 is 10mm, the outer diameter is 15mm, and the thickness is 2mm. It can be understood that the size range of the limit ring 400 can be appropriately adjusted according to the actual selection and specific needs, and is not limited here.

[0045] Further, as a specific embodiment of the present invention, Figure 1 and Figure 2 As shown, the pull rod 100 includes a first threaded section 130, and the tension adjustment tube 300 is threadedly engaged with the first threaded section 130. Under this structure, by rotating the tension adjustment tube 300, the tension adjustment tube 300 can be moved along the length direction of the pull rod 100 and locked at any position of the first threaded section 130. It can be understood that according to the actual selection and specific needs, the connection method of the tension adjustment tube 300 and the pull rod 100 can be appropriately modified, as long as it is ensured that the tension adjustment tube 300 can be moved along the length direction of the pull rod 100 to between all tension arms 210 and can be automatically locked, and it is not limited here.

[0046] Further, as an optional embodiment of the present invention, the outer diameter of the first thread segment 130 is 5 mm to 20 mm, and the length is not less than 20 mm. For example, the outer diameter of the first thread segment 130 is 12 mm and the length is 20 mm. It can be understood that the size range of the first thread segment 130 can be appropriately adjusted according to actual selection and specific needs, and is not limited here.

[0047] Further, as a specific embodiment of the present invention, Figure 1 and Figure 2 As shown, the pull rod 100 also includes a second threaded section 150 connected to the first threaded section 130, and the elastic component 500 includes a locking nut 510 threadedly screwed on the second threaded section 150 and an elastic member 520 disposed between the limiting ring 400 and the locking nut 510. Under this structure, the two ends of the elastic member 520 are respectively abutted between the limiting ring 400 and the locking nut 510, and the elastic force of the elastic member 520 can make the limiting ring 400 have a tendency to move from the fixed end to the free end. It can be understood that, according to the actual choice and specific needs, the matching mode of the elastic component 500 and the pull rod 100 can be appropriately modified, as long as it is ensured that the elastic component 500 can make the limiting ring 400 have a tendency to move from the fixed end to the free end, and it is not limited here.

[0048] Further, as an optional embodiment of the present invention, the outer diameter of the second thread segment 150 is 3mm to 10mm, and the length is 5mm to 15mm. For example, the outer diameter of the second thread segment 150 is 5mm and the length is 10mm. It can be understood that the size range of the second thread segment 150 can be appropriately adjusted according to actual selection and specific needs, and is not limited here.

[0049] Further, as an optional embodiment of the present invention, the locking nut 510 can be a steel part. The above material has high mechanical strength and can effectively improve the service life of the locking nut 510. It is understandable that the material of the locking nut 510 can be appropriately modified according to the actual selection and specific needs, and is not limited here.

[0050] Further, as an optional embodiment of the present invention, the inner diameter of the locking nut 510 is 3mm to 8mm, and the outer diameter is 10mm to 20mm. For example, the inner diameter of the locking nut 510 is 5mm, and the outer diameter is 15mm. It can be understood that the size range of the locking nut 510 can be appropriately adjusted according to actual selection and specific needs, and is not limited here.

[0051] Further, as a specific embodiment of the present invention, Figure 1 and Figure 2 As shown, the elastic member 520 is sleeved outside the second threaded section 150. In this embodiment, the elastic member 520 can be a spring. Of course, according to the actual situation and specific needs, the elastic member 520 can also be other structures, which is not limited here.

[0052] Further, as an optional embodiment of the present invention, the inner diameter of the spring is 10mm to 15mm, and the outer diameter is 11mm to 16mm. For example, the inner diameter of the spring is 12mm and the outer diameter is 13mm. It can be understood that the size range of the spring can be appropriately adjusted according to actual selection and specific needs, and is not limited here.

[0053] Further, as a specific embodiment of the present invention, Figure 1 and Figure 2 As shown, the pull rod 100 also includes a tension adjustment section 140 whose two ends are respectively connected to the first thread section 130 and the second thread section 150, and the tension arm 210 is arranged corresponding to the tension adjustment section 140, and the outer diameter of the tension adjustment section 140 is gradually expanded from the second thread section 150 to the first thread connection section. Under this structure, when the support frame 200 is in a natural state, the distance between the free ends of any two tension arms 210 is greater than the distance between the fixed ends, so that the tension adjustment tube 300 extends from the free ends of the tension arms 210 to between the multiple tension arms 210.

[0054] Further, as an optional embodiment of the present invention, the tension adjustment section 140 is conical and has a smooth surface. The length between the end with the largest outer diameter and the end with the smallest outer diameter of the tension adjustment section 140 is equal to the length of the tension arm 210, and the error range is within 2 mm. It is understandable that the size range of the tension adjustment section 140 can be appropriately adjusted according to the actual selection and specific needs, and is not limited here.

[0055] Further, as a specific embodiment of the present invention, Figure 1 and Figure 2 As shown, the pull rod 100 further includes a handle 110 connected to one end of the first threaded section 130 away from the second threaded section 150, and a first anti-slip groove is provided on the handle 110. In this structure, the operator can hold the first anti-slip groove of the handle 110 to stably operate the oil seal removal device.

[0056] Further, as an optional embodiment of the present invention, the outer diameter of the handle means 110 is 20mm to 30mm, and the length is 70mm to 90mm. For example, the outer diameter of the handle means 110 is 25mm and the length is 80mm. It can be understood that the size range of the handle means 110 can be appropriately adjusted according to actual selection and specific needs, and is not limited here.

[0057] Further, as a specific embodiment of the present invention, Figure 1 and Figure 2 As shown, the pull rod 100 also includes a sliding section 120 whose two ends are respectively connected to the handle means 110 and the first threaded section 130, and the oil seal disassembly device also includes an inertia force ring 600 sleeved on the outside of the sliding section 120. The inertia force ring 600 can slide along the sliding section 120, and the inner diameter of the inertia force ring 600 is smaller than the outer diameter of the handle means 110. Under this structure, the oil seal removal device is inserted into the inner side of the oil seal to be removed, so that the fixed end of the tension arm 210 is located on the inner side of the oil seal to be removed, and the tension adjustment tube 300 is slowly moved between all the tension arms 210. The angles between all the tension arms 210 gradually increase, so that the cutting edge 220 at the free end of the tension arm 210 is embedded in the gap between the oil seal and the equipment. Then, the inertia force ring 600 is retracted to the end of the sliding section 120 close to the first threaded section 130, and the inertia force ring 600 is slowly pushed to the end of the sliding section 120 away from the first threaded section 130 and hits the handle 110. Then, the inertia force ring 600 is retracted to the end of the sliding section 120 close to the first threaded section 130, and the above actions are repeated until the oil seal is completely pulled out.

[0058] Furthermore, as a specific embodiment of the present invention, the sliding section 120 is smoothly configured to reduce friction and ensure that the inertia boosting ring 600 slides easily on the surface of the sliding section 120 .

[0059] Further, as an optional embodiment of the present invention, the outer diameter of the sliding section 120 is 5mm to 20mm, and the length is 100mm to 200mm. For example, the outer diameter of the sliding section 120 is 11mm and the length is 130mm. It can be understood that the size range of the sliding section 120 can be appropriately adjusted according to actual selection and specific needs, and is not limited here.

[0060] Further, as an optional embodiment of the present invention, the inner diameter of the inertial force boosting ring 600 is 7 mm to 15 mm, the outer diameter is 30 mm to 100 mm, and the length is 30 mm to 100 mm. For example, the inner diameter of the inertial force boosting ring 600 is 12.5 mm, the outer diameter is 50 mm, and the length is 60 mm. It can be understood that the size range of the inertial force boosting ring 600 can be appropriately adjusted according to actual selection and specific needs, and is not limited here.

[0061] Furthermore, as an optional embodiment of the present invention, the inertia booster ring 600 can be made of copper. Copper has a high density and can generate high inertia when running fast. It is soft and is not easy to damage the handle 110 due to impact. It is understandable that the material of the inertia booster ring 600 can be appropriately modified according to the actual situation and specific needs, and is not limited here.

[0062] Further, as a specific embodiment of the present invention, Figure 1 and Figure 2 As shown, the tension-adjusting tube 300 is provided with a second anti-slip groove on the outside. Under this structure, the operator can better operate the tension-adjusting tube 300 through the second anti-slip groove.

[0063] Furthermore, as a specific embodiment of the present invention, the cutting edge 220 is welded to the free end of the tension arm 210. Of course, according to the actual situation and specific needs, the cutting edge 220 can also be fixed to the free end of the tension arm 210 in other ways, which is not the only limitation here.

[0064] Further, as a specific embodiment of the present invention, Figure 1 and Figure 2As shown, the support frame 200 further includes a fixing ring 230 sleeved on the pull rod 100, and the fixing end of the tension arm 210 is fixedly connected to the fixing ring 230. In this embodiment, the fixing ring 230 and the tension arm 210 are integrally formed parts, and the fixing ring 230 is fixed to the second threaded section 150. It can be understood that, according to the actual selection and specific needs, the fixing end of the tension arm 210 can be fixedly connected together in other ways, which is not limited here.

[0065] The assembly method of the oil seal disassembly device of the embodiment of the present invention is as follows: insert the inertia force ring 600 from the second threaded section 150 of the pull rod 100, and push the inertia force ring 600 to the sliding section 120 of the pull rod 100; then, insert the tension adjustment tube 300 from the second threaded section 150 of the pull rod 100, so that the tension adjustment tube 300 is threadedly screwed into the first threaded section 130; then, insert the fixing ring 230 of the support frame 200 from the second threaded section 150, and make the tension arm 210 corresponding to the tension adjustment section 140; then, insert the limit ring 400 from the second threaded section 150 of the pull rod 100, and push the limit ring 400 to the tension arm 210; finally, insert the spring from the second threaded section 150 of the pull rod 100, so that the locking nut 510 is threadedly screwed into the second threaded section 150, and the two ends of the spring are respectively abutted against the limit ring 400 and the locking nut 510, thereby completing the assembly of the oil seal disassembly device.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An oil seal disassembly device, characterized in that: include: A pull rod, one end of which is provided with a handle; A support frame, sleeved outside the pull rod, the support frame includes at least two tension arms and at least two cutting edges, the tension arm has a fixed end and a free end, the free end of the tension arm is located on the side of the fixed end of the tension arm facing the handle, the fixed ends of all the tension arms are fixedly connected together, the free ends of all the tension arms are separately arranged and fixedly connected with the corresponding cutting edges, the cutting edges are located on the side of the free end of the tension arm away from the fixed end of the tension arm, the cutting edges are suitable for pushing the disassembled part along the extension direction of the pull rod, and the distance between the free ends of any two tension arms is greater than the distance between the fixed ends; A tension adjustment tube is sleeved outside the pull rod and is arranged between the fixed end of the tension arm and the handle, and the tension adjustment tube can be moved along the length direction of the pull rod to between all the tension arms so that the angles between all the tension arms gradually increase, and the tension adjustment tube can be automatically locked; A limiting ring, sleeved outside at least two of the tension arms; as well as An elastic component is fixedly connected to the pull rod and arranged close to the fixed end of the tension arm. The elastic component abuts against the limiting ring, so that the limiting ring has a tendency to move from the fixed end to the free end.

2. The oil seal removal device according to claim 1, characterized in that: The pull rod includes a first threaded section, and the tension-adjusting pipe is threadedly engaged with the first threaded section.

3. The oil seal removal device according to claim 2, characterized in that: The pull rod further includes a second threaded section connected to the first threaded section, and the elastic component includes a locking nut threadedly engaged with the second threaded section and an elastic member disposed between the limiting ring and the locking nut.

4. The oil seal removal device according to claim 3, characterized in that: The elastic member is sleeved outside the second thread segment.

5. The oil seal removal device according to claim 4, characterized in that: The elastic member is a spring.

6. The oil seal removal device according to claim 3, characterized in that: The pull rod also includes a tension adjustment section whose two ends are respectively connected to the first thread section and the second thread section, the tension arm is arranged corresponding to the tension adjustment section, and the outer diameter of the tension adjustment section is gradually expanded from the second thread section to the first thread section.

7. The oil seal removal device according to claim 3, characterized in that: The second thread segment is arranged at an end of the first thread segment away from the handle member, and the handle member is provided with a first anti-slip pattern on the outside.

8. The oil seal removal device according to claim 7, characterized in that: The pull rod also includes a sliding section with two ends respectively connected to the handle means and the first threaded section. The oil seal disassembly device also includes an inertia force ring sleeved outside the sliding section. The inertia force ring can slide along the sliding section, and the inner diameter of the inertia force ring is smaller than the outer diameter of the handle means.

9. The oil seal removal device according to any one of claims 1 to 8, characterized in that: The tension adjustment tube is provided with a second anti-slip pattern on the outside.

10. The oil seal removal device according to any one of claims 1 to 8, characterized in that: The cutting edge is welded to the free end of the tension arm.

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