Tool convenient for dismounting and replacing oil seal

Abstract

The utility model relates to the field of oil seal disassembly and assembly, and discloses a tool convenient for disassembly and replacement of an oil seal, which comprises a reaction frame, a platform is slidably connected to the inner side of the reaction frame, a workpiece is arranged on the platform, an oil seal is slidably connected in the workpiece, and three pressing sheets are slidably connected to the inner side of the oil seal. Three pressing pieces are installed on the platform, pressing blocks are slidably connected among the inner walls of the three pressing pieces, an adjusting assembly is installed outside the platform, a fixing assembly is installed in the platform, the adjusting assembly comprises two pin rods and two shells, and the outer portions of the pin rods are slidably connected into the platform. According to the utility model, the spring pushes and drives the insertion rod to be inserted into the pin rod, and meanwhile, the counter-force frame presses the pressing block and drives the three pressing sheets to downwards press the oil seal, so that the oil seal is mounted in a workpiece, the pin rod is fixed, the pin rod can be quickly unlocked for adjustment, and meanwhile, the three pressing sheets are matched, so that the oil seal is uniformly stressed and cannot be damaged; therefore, the oil seal is convenient to disassemble and assemble.

Description

Technical Field

[0001] This utility model relates to the field of oil seal disassembly and assembly, and in particular to a tool for convenient disassembly and replacement of oil seals. Background Technology

[0002] An oil seal is a sealing device used in mechanical equipment to prevent oil leakage and the entry of external contaminants. The main function of an oil seal is to provide a seal between shafts and bearings or other related components, ensuring that no oil leakage occurs during equipment operation, thereby reducing mechanical friction and preventing contaminants from damaging mechanical parts. Oil seals are made of elastic materials such as rubber, polyurethane, and fluororubber, and are combined with a metal shell structure. The structure includes an elastic sealing lip and a metal ring. The elastic lip is in close contact with the rotating shaft to keep the oil from leaking.

[0003] Oil seals are widely used in various equipment such as automobiles, construction machinery, home appliances, and motors. They are especially needed in automobile engines, transmissions, and axle housings to ensure sealing performance. The working principle of an oil seal is to use the friction between the sealing lip and the shaft surface to form a sealing barrier. At the same time, the design of an oil seal must take into account factors such as shaft speed, operating temperature, and medium to ensure its long-term stable sealing performance.

[0004] Currently, when disassembling and assembling oil seals, an auxiliary tool is used to wedge it into the oil seal and then pull it out forcefully. However, since the oil seal and the device rely on an interference fit, a lot of force is required during disassembly and assembly. Furthermore, uneven force can cause the oil seal to break and become unusable, making disassembly and assembly very inconvenient. Some workpieces can use a reaction frame to disassemble and assemble oil seals. However, the traditional reaction frame adjusts the platform height by directly inserting a pin into the platform without a limiting mechanism, which can easily cause it to fall off, resulting in the platform tilting or falling. Therefore, a tool that facilitates the disassembly and replacement of oil seals is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a tool for easy disassembly and replacement of oil seals. It aims to improve the situation where oil seals require a lot of force to disassemble and assemble, and uneven force can cause oil seals to break and become unusable, making disassembly and assembly very inconvenient. Some oil seals on workpieces can be disassembled and assembled using a reaction frame. However, the traditional reaction frame adjusts the platform height by inserting a pin directly into the platform without a limiting mechanism, which can easily cause the pin to fall off, resulting in the platform tilting or falling.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a tool for easy disassembly and replacement of oil seals, including a reaction frame, a platform slidably connected to the inner side of the reaction frame, a workpiece set on the platform, an oil seal slidably connected inside the workpiece, three pressure plates slidably connected to the inner side of the oil seal, a pressure block slidably connected between the inner walls of the three pressure plates, an adjustment component installed on the outside of the platform, and a fixing component installed inside the platform;

[0007] The adjustment assembly includes two pins and two housings. The pins are slidably connected to the outside of the platform. The rear side of the housing is fixedly connected to the front side of the platform. A plug is slidably connected inside the housing. A spring is fixedly connected to the outside of the plug and to the inside of the plug. A baffle is slidably connected inside the housing. A limit plate is fixedly connected to the top of the housing.

[0008] As a further description of the above technical solution:

[0009] The fixing assembly includes a worm and a worm wheel. The worm is externally rotatably connected to the inside of the platform, and the worm wheel is externally rotatably connected to the inside of the platform. The worm wheel and the worm mesh with each other. A turntable is fixedly connected to the top of the worm wheel. Four slide plates are slidably connected inside the turntable. Limit rods are slidably connected inside the slide plates. A clamping plate is fixedly connected to the top of the slide plates.

[0010] As a further description of the above technical solution:

[0011] The pin extends through the interior of the reaction frame, and the inner side of the reaction frame abuts against the top of the pressure block.

[0012] As a further description of the above technical solution:

[0013] The insertion rod is externally inserted into the inside of the pin, and the outer side of the baffle is slidably connected to the inner side of the limiting plate.

[0014] As a further description of the above technical solution:

[0015] The inner side of the baffle abuts against the outer side of the insert rod, and the bottom of the baffle abuts against the top of the insert rod.

[0016] As a further description of the above technical solution:

[0017] The inner side of the spring is fixedly connected to the inner wall of the outer casing, and the outer side is slidably connected to the inner wall of the outer casing.

[0018] As a further description of the above technical solution:

[0019] The limiting rod is externally fixedly connected to the inside of the platform, and the sliding plate is externally slidably connected to the inside of the platform.

[0020] As a further description of the above technical solution:

[0021] The bottom of the clamping plate is slidably connected to the top of the platform, and the inner side of the clamping plate abuts against the outer side of the workpiece.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the spring pushes the insertion rod into the pin, while the reaction frame presses the pressure block, which in turn drives the three pressure plates to press the oil seal downward, thus installing the oil seal inside the workpiece. This achieves the fixation of the pin and allows for quick unlocking and adjustment. The three pressure plates also ensure that the oil seal is subjected to uniform force without causing damage, making it convenient to disassemble and assemble the oil seal.

[0024] 2. In this utility model, by rotating the worm gear, the worm wheel drives the turntable to rotate. At this time, under the limit of the limit rod, the four slide plates drive the clamping plate to move synchronously towards the middle, clamping the workpiece and fixing the workpiece on the platform, thus preventing the workpiece from falling due to random movement when pressing the oil seal. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a tool for convenient disassembly and replacement of oil seals proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the pressure plate of a tool for easy disassembly and replacement of oil seals proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the platform for a tool that facilitates the disassembly and replacement of oil seals according to the present invention.

[0028] Figure 4 A schematic diagram of the insert rod of a tool for convenient disassembly and replacement of oil seals proposed in this utility model;

[0029] Figure 5 This is a schematic diagram of the limiting rod of a tool for convenient disassembly and replacement of oil seals proposed in this utility model;

[0030] Figure 6 A schematic diagram of the worm gear structure of a tool for convenient disassembly and replacement of oil seals proposed in this utility model;

[0031] Figure 7 This is a schematic diagram of the structure of a turntable for a tool that facilitates the disassembly and replacement of oil seals, as proposed in this utility model.

[0032] Legend:

[0033] 1. Reaction frame; 2. Platform; 3. Workpiece; 4. Oil seal; 5. Pressure plate; 6. Pressure block; 7. Pin; 8. Housing; 9. Insert rod; 10. Slide plate; 11. Spring; 12. Baffle; 13. Limiting plate; 14. Worm gear; 15. Worm wheel; 16. Turntable; 17. Slide plate; 18. Limiting rod; 19. Clamping plate. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Reference Figure 1 - Figure 4 This utility model provides an embodiment of a tool for convenient disassembly and replacement of oil seals, including a reaction frame 1, a platform 2 slidably connected to the inner side of the reaction frame 1, a workpiece 3 set on the platform 2, an oil seal 4 slidably connected inside the workpiece 3, three pressure plates 5 slidably connected inside the oil seal 4, and a pressure block 6 slidably connected between the inner walls of the three pressure plates 5. The reaction frame 1 is composed of a hydraulic cylinder and a bracket, used to press the pressure block 6. The platform 2 is used to support the workpiece 3, which is a part of the oil seal 4 that is about to be disassembled or installed. The oil seal 4 is used to separate oil and gas to achieve sealing. The pressure plates 5 are used to ensure that the oil seal 4 is subjected to uniform force during disassembly or installation to avoid damage to the oil seal 4. The pressure plates 5 have different lengths on the upper and lower sides, and the appropriate length is selected to align with the oil seal 4 depending on whether it is disassembly or installation. The pressure block 6 is used to move the pressure plates 5 downward in cooperation with the reaction frame 1. The pressure block 6 has different sizes depending on the oil seal 4 that is about to be disassembled or installed. An adjustment component is installed on the outside of the platform 2, and a fixing component is installed inside the platform 2.

[0036] The adjustment assembly includes two pins 7 and two housings 8. The pins 7 are externally slidably connected to the inside of the platform 2. The rear of the housing 8 is fixedly connected to the front of the platform 2. An insert rod 9 is slidably connected inside the housing 8. A 10 is fixedly connected to the outside of the insert rod 9, and a spring 11 is fixedly connected to the inside of the 10. A baffle 12 is slidably connected inside the housing 8. A limit plate 13 is fixedly connected to the top of the housing 8. The pins 7 are used to fix the platform 2 to the reaction frame 1. The housings 8 are used to connect and protect the internal parts. The insert rod 9 is inserted into the pin 7 to fix it. The 10 is used to withstand the thrust of the spring 11 and drive the insert rod 9 to move synchronously. The spring 11 is used to reset the 10. The baffle 12 is used to block the outlet of the insert rod 9 to prevent the baffle 12 from automatically resetting. The limiting plate 13 is used to limit the movement distance of the baffle 12 and prevent it from falling off. The pin 7 passes through the inside of the reaction frame 1 to fix the platform 2. The inside of the reaction frame 1 and the top of the pressure block 6 abut against each other to achieve pressing, so that they can be disassembled and assembled. The outside of the insert rod 9 is inserted into the inside of the pin 7 to keep the pin 7 stable and prevent it from falling off. The outside of the baffle 12 is slidably connected to the inside of the limiting plate 13 to limit the movement direction of the baffle 12. The inside of the baffle 12 and the outside of the insert rod 9 abut against each other to prevent the insert rod 9 from automatically resetting. The bottom of the baffle 12 and the top of the 10 abut against each other to control the timing of the baffle 12 falling. The inside of the spring 11 is fixedly connected to the inner wall of the outer shell 8 to keep the spring 11 stable. The outside of the 10 is slidably connected to the inner wall of the outer shell 8 to limit the movement direction of the 10.

[0037] Reference Figure 3 - Figure 7 The fixed assembly includes a worm gear 14 and a worm wheel 15. The worm gear 14 is externally rotatably connected to the inside of the platform 2, and the worm wheel 15 is externally rotatably connected to the inside of the platform 2. The worm wheel 15 and the worm gear 14 mesh with each other. A turntable 16 is fixedly connected to the top of the worm wheel 15. Four slide plates 17 are slidably connected inside the turntable 16. Limit rods 18 are slidably connected inside the slide plates 17. A clamping plate 19 is fixedly connected to the top of the slide plates 17. The worm gear 14 drives the worm wheel 15 to rotate, and the worm wheel 15 drives the turntable 16 to rotate synchronously. The turntable 16 drives the four slide plates 17 to rotate synchronously. The slide plate 17 moves simultaneously, and the slide plate 17 drives the clamping plate 19 to move synchronously. The limiting rod 18 is used to limit the movement direction of the slide plate 17. The clamping plate 19 is used to clamp the workpiece 3 to keep the workpiece 3 stable. The limiting rod 18 is externally fixedly connected to the inside of the platform 2 to keep the limiting rod 18 stable. The slide plate 17 is externally slidably connected to the inside of the platform 2. The bottom of the clamping plate 19 is slidably connected to the top of the platform 2. The platform 2 simultaneously limits the movement direction of the slide plate 17 and the clamping plate 19. The inner side of the clamping plate 19 and the outer side of the workpiece 3 abut against each other to achieve fixation.

[0038] Working principle: When using this device to disassemble and assemble oil seal 4, first adjust the position of platform 2 according to the height of workpiece 3. By pulling the insertion rod 9, the spring 11 is compressed, causing the insertion rod 9 to retract into the housing 8. At the same time, the baffle 12 will automatically fall into the housing 8, blocking the outlet of the insertion rod 9 and disengaging it from the pin 7. Then, pull the pin 7 out of the reaction frame 1 and move platform 2. When platform 2 moves to the appropriate position, reinsert the pin 7 between the reaction frame 1 and platform 2. Then, under the limit of the limiting plate 13, pull the baffle 12. At this time, the spring 11 will immediately push 10 to reset, causing the insertion rod 9 to insert into the pin 7. Fix pin 7, then place workpiece 3 on platform 2 and rotate worm gear 14 to drive worm wheel 15 to rotate, causing turntable 16 to rotate synchronously. Under the limit of limit rod 18, turntable 16 drives slide plate 17 to move synchronously to the middle, so that clamping plate 19 clamps workpiece 3 and fixes platform 2. Finally, put three pressure plates 5 into the inside of oil seal 4 and pressure block 6 into the inside of three pressure plates 5. At this time, control reaction frame 1 to work, so that hydraulic cylinder presses pressure block 6, driving pressure plates 5 to press down on oil seal 4, so that oil seal 4 is installed in or removed from workpiece 3, so that oil seal 4 is subjected to force evenly and avoids damage to oil seal 4, resulting in scrap.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tool for convenient disassembly and replacement of oil seals, comprising a reaction frame (1), characterized in that: The reaction frame (1) is slidably connected to a platform (2), the platform (2) is provided with a workpiece (3), the workpiece (3) is slidably connected to an oil seal (4), the oil seal (4) is slidably connected to three pressure plates (5), the inner walls of the three pressure plates (5) are slidably connected to a pressure block (6), the platform (2) is externally equipped with an adjustment component, and the platform (2) is internally equipped with a fixing component; The adjustment assembly includes two pins (7) and two housings (8). The pins (7) are externally slidably connected to the inside of the platform (2). The rear side of the housing (8) is fixedly connected to the front side of the platform (2). The housing (8) is internally slidably connected to a plug rod (9). The plug rod (9) is externally fixedly connected to a (10). The (10) is internally fixedly connected to a spring (11). The housing (8) is internally slidably connected to a baffle (12). The top of the housing (8) is fixedly connected to a limit plate (13).

2. The tool for convenient disassembly and replacement of oil seals according to claim 1, characterized in that: The fixing assembly includes a worm (14) and a worm wheel (15). The worm (14) is externally rotatably connected to the inside of the platform (2). The worm wheel (15) is externally rotatably connected to the inside of the platform (2). The worm wheel (15) and the worm (14) mesh with each other. A turntable (16) is fixedly connected to the top of the worm wheel (15). Four slide plates (17) are slidably connected inside the turntable (16). Limiting rods (18) are slidably connected inside the slide plates (17). A clamping plate (19) is fixedly connected to the top of the slide plates (17).

3. The tool for convenient disassembly and replacement of oil seals according to claim 1, characterized in that: The pin (7) extends through the interior of the reaction frame (1) and abuts against the inside of the reaction frame (1) and the top of the pressure block (6).

4. The tool for convenient disassembly and replacement of oil seals according to claim 1, characterized in that: The insertion rod (9) is externally inserted into the inside of the pin (7), and the outer side of the baffle (12) is slidably connected to the inner side of the limiting plate (13).

5. The tool for convenient disassembly and replacement of oil seals according to claim 1, characterized in that: The inner side of the baffle (12) abuts against the outer side of the insert (9), and the bottom of the baffle (12) abuts against the top of the insert (10).

6. The tool for convenient disassembly and replacement of oil seals according to claim 1, characterized in that: The inner side of the spring (11) is fixedly connected to the inner wall of the outer shell (8), and the outer side of the spring (10) is slidably connected to the inner wall of the outer shell (8).

7. The tool for convenient disassembly and replacement of oil seals according to claim 2, characterized in that: The limiting rod (18) is externally fixedly connected to the inside of the platform (2), and the sliding plate (17) is externally slidably connected to the inside of the platform (2).

8. The tool for convenient disassembly and replacement of oil seals according to claim 2, characterized in that: The bottom of the clamping plate (19) is slidably connected to the top of the platform (2), and the inner side of the clamping plate (19) and the outer side of the workpiece (3) abut against each other.

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