Dustproof hydraulic coupling

Abstract

The utility model belongs to the technical field of couplings, and particularly relates to a dustproof hydraulic coupler which comprises a first half coupler, an inner cavity is formed in the first half coupler, an oil injection nozzle is formed in the side wall of the first half coupler, a circular groove is formed in the first half coupler, and a mounting plate is rotationally mounted in the circular groove. A first filter element is placed in the first containing groove, a second filter element is placed in the second containing groove, hydraulic oil is injected into the inner cavity through the oil injection nozzle, then the first safety pin is tightened, the hydraulic oil is sealed in the inner cavity, and when the hydraulic oil passes through the oil injection nozzle, the first filter element in the oil injection nozzle filters the hydraulic oil; dust and impurities in the hydraulic oil cannot enter the inner cavity, efficient filtering of the hydraulic oil is achieved, meanwhile, the filter element can be conveniently replaced through the structure, abrasion of the dust and the impurities to a sealing piece and other structures is avoided, and the dustproof performance of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of coupling technology, specifically a dustproof hydraulic coupling. Background Technology

[0002] Hydraulic couplings are a new type of power transmission component, characterized by their compact structure, light weight, low moment of inertia, ease of assembly, and safety and reliability. They are used for fixed connection when connecting the electrode output shaft and the power shaft.

[0003] A Chinese patent with authorization announcement number CN 113062929 B discloses a hydraulic coupling, including: a support mechanism, which includes an adjusting outer frame and a first sealing component. The first sealing component is disposed on the adjusting outer frame. A first limiting groove is formed on the inner surface wall of the adjusting outer frame near one edge. An oil injection connector is connected to the center of the top of the adjusting outer frame near one edge. A second limiting groove is formed on the inner surface wall of the adjusting outer frame near the other edge. In this invention, a drive connecting ring sleeved on the motor output end allows the drive connecting ring to be conveniently and securely connected to the inside of the drive connecting frame. Simultaneously, by rotating the positioning ring, the driven connecting ring can be effectively and securely connected to the driven shaft inside the adjusting outer frame under the positional compression restriction of the positioning ring. After injecting a certain amount of hydraulic oil into the first limiting groove through the oil injection connector, the hydraulic oil can push the barrier ring. Furthermore, both the outer surface of the drive connecting ring and the interior of the adjusting outer frame are frustum-shaped.

[0004] During use, dust and impurities can seep into the hydraulic oil of existing hydraulic couplings. These dust and impurities can easily cause wear on seals and other structures. Because dust and impurities cannot be filtered, the dustproof performance of the device is poor. Therefore, a dustproof hydraulic coupling is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology and solve the problems existing in the existing technology, this utility model proposes a dustproof hydraulic coupling.

[0006] The technical solution adopted by this utility model to solve its technical problem is a dustproof hydraulic coupling, including a first half-coupling. The first half-coupling has an inner cavity. An oil injection nozzle is provided on the side wall of the first half-coupling. A circular groove is provided inside the first half-coupling, and an mounting plate is rotatably installed in the circular groove. The mounting plate has a first placement groove and a second placement groove. A first filter element is placed in the first placement groove, and a second filter element is placed in the second placement groove. A connecting groove is provided on the side wall of the first half-coupling, and a connecting rod is assembled in the connecting groove. The connecting rod is rotatably connected to the mounting plate. A knob is fixedly installed on the top side of the connecting rod, and a retaining groove is provided in the knob. A sliding groove is provided inside the first half-coupling, and a positioning rod is assembled in the sliding groove. The positioning rod is assembled in the retaining groove. Inside the groove, a first spring is installed between the positioning rod and the inner wall of the groove. A rod groove is opened on the side wall of the first half-coupling, and a drive rod is assembled in the rod groove. A steel wire is fixedly connected to the bottom side of the drive rod, and the other end of the steel wire is connected to the positioning rod. A second spring is installed between the drive rod and the inner wall of the rod groove. The first spring and the second spring are in a compressed state. By injecting hydraulic oil into the inner cavity through the oil injection nozzle and then tightening the first safety pin, the hydraulic oil is sealed in the inner cavity. When the hydraulic oil passes through the oil injection nozzle, the first filter element inside filters the hydraulic oil, and dust and impurities inside the hydraulic oil will not enter the inner cavity, thus achieving efficient filtration of the hydraulic oil. At the same time, this structure allows for convenient replacement of the filter element, avoiding wear of the seals and other structures by dust and impurities, and improving the dustproof performance of the device.

[0007] Preferably, the inner wall of the grease nipple is threaded, and a first safety pin is installed on the grease nipple. A drain nipple is provided on the side wall of the first half-coupling, its inner wall is threaded, and a second safety pin is installed on the drain nipple. A mounting hole is provided on the side wall of the first half-coupling, its inner wall is threaded, and a third safety pin is fitted into the mounting hole. A first flange is provided on one side of the first half-coupling, and a sealing gasket is placed at the first flange. A second half-coupling is placed at the other end of the sealing gasket, and a second flange is provided on the second half-coupling, engaging with the first flange. An inner sleeve is fixedly installed on the inner wall of the second half-coupling, and an output shaft and a power shaft are placed inside the inner sleeve. During disassembly of the hydraulic coupling, the hydraulic oil in the inner cavity can be quickly drained by unscrewing the second safety pin on the drain nipple. This structure allows for convenient disassembly of the hydraulic coupling, improving the ease of disassembly.

[0008] The advantages of this utility model are:

[0009] 1. This utility model injects hydraulic oil into the inner cavity through the oil filler nozzle, and then tightens the first safety pin to seal the hydraulic oil in the inner cavity. When the hydraulic oil passes through the oil filler nozzle, the first filter element inside filters the hydraulic oil, preventing dust and impurities inside the hydraulic oil from entering the inner cavity, thus achieving efficient filtration of the hydraulic oil. At the same time, this structure allows for convenient replacement of the filter element, avoiding wear of the seals and other structures caused by dust and impurities, and improving the dustproof performance of the device.

[0010] 2. In this utility model, during the disassembly of the hydraulic coupling, the hydraulic oil in the inner cavity can be quickly discharged by unscrewing the second safety pin on the vent. This structure allows for convenient disassembly of the hydraulic coupling and improves the ease of disassembly. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a first-person perspective 3D structural diagram;

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of the mounting plate;

[0014] Figure 3 A schematic diagram of the three-dimensional structure at the positioning rod;

[0015] Figure 4 This is a three-dimensional structural diagram of the oil filler nozzle.

[0016] Figure 5 This is a schematic diagram of the three-dimensional structure in a side view.

[0017] In the diagram: 1. First half-coupling; 2. Inner cavity; 3. Oil inlet; 4. First safety pin; 5. Oil drain nozzle; 6. Second safety pin; 7. Circular groove; 8. Mounting plate; 9. First placement groove; 10. Second placement groove; 11. First filter element; 12. Second filter element; 13. Connecting groove; 14. Connecting rod; 15. Knob; 16. Slot; 17. Slide groove; 18. Positioning rod; 19. First spring; 20. Rod groove; 21. Drive rod; 22. Steel wire; 23. Second spring; 24. Mounting hole; 25. Third safety pin; 26. Sealing gasket; 27. Second half-coupling; 28. Inner sleeve; 29. ​​Output shaft; 30. Power shaft. Detailed Implementation

[0018] 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 scope of protection of the present utility model.

[0019] Please see Figure 1-4 As shown, a dustproof hydraulic coupling includes a first half-coupling 1, an inner cavity 2 inside the first half-coupling 1, an oil inlet 3 on the side wall of the first half-coupling 1, a circular groove 7 inside the first half-coupling 1, a mounting plate 8 rotatably mounted in the circular groove 7, a first placement groove 9 and a second placement groove 10 inside the mounting plate 8, a first filter element 11 placed in the first placement groove 9, and a second filter element 12 placed in the second placement groove 10, a connecting groove 13 on the side wall of the first half-coupling 1, a connecting rod 14 assembled in the connecting groove 13, the connecting rod 14 rotatably connected to the mounting plate 8, a knob 15 fixedly mounted on the top side of the connecting rod 14, a retaining groove 16 inside the knob 15, a sliding groove 17 inside the first half-coupling 1, a positioning rod 18 assembled in the sliding groove 17, the positioning rod 18 assembled in the retaining groove 16, a first spring 19 installed between the positioning rod 18 and the inner wall of the sliding groove 17, and the first half-coupling 1... A rod groove 20 is provided on the side wall of the coupling 1. A drive rod 21 is installed in the rod groove 20. A steel wire 22 is fixedly connected to the bottom side of the drive rod 21. The other end of the steel wire 22 is connected to the positioning rod 18. A second spring 23 is installed between the drive rod 21 and the inner wall of the rod groove 20. The first spring 19 and the second spring 23 are in a compressed state. During operation, dust and impurities will seep into the hydraulic oil of the existing hydraulic coupling. Dust and impurities can easily cause wear to the seals and other structures. Since the dust and impurities cannot be filtered, the dustproof performance of the device is poor. The hydraulic oil is injected into the inner cavity 2 through the oil injection nozzle 3 by the high-pressure oil pump. Then the first safety pin 4 is tightened to seal the hydraulic oil in the inner cavity 2. When the hydraulic oil passes through the oil injection nozzle 3, the first filter element 11 inside it filters the hydraulic oil. Dust and impurities inside the hydraulic oil will not enter the inner cavity 2, thus achieving efficient filtration of the hydraulic oil.

[0020] During filter element replacement, the new second filter element 12 is placed into the second placement slot 10 of the mounting plate 8 by rotating and unscrewing the third safety pin 25 inside the mounting hole 24. Then, the drive rod 21 is pressed down, compressing the second spring 23. Simultaneously, the drive rod 21 pulls the steel wire 22 downwards within the rod groove 20. The other end of the steel wire 22 pulls the positioning rod 18 back into the slide groove 17, compressing the first spring 19. At this point, the positioning rod 18 unlocks the knob 15. Then, the knob 15 is rotated 180°, causing the connecting rod 14 to rotate 180°, which in turn causes the mounting plate 8 to rotate 180°. Simultaneously, the drive rod 21 is released, and under the action of the first spring 19 and the second spring 23, the drive... The moving rod 21 will move vertically upward to return to its original position. When the slot 16 on the knob 15 is aligned with the positioning rod 18, the positioning rod 18 will move into the slot 16 to lock and position the knob 15, thus realizing the rotation of the mounting plate 8 by 180°. The mounting plate 8 drives the first placement slot 9 and the second placement slot 10 on it to rotate by 180°. The first filter element 11 and the second filter element 12 in the first placement slot 9 and the second placement slot 10 rotate by 180° to exchange positions. The old first filter element 11 is located in the mounting hole 24. The first filter element 11 can be directly removed, and the new second filter element 12 is located at the oil filling nozzle 3, realizing convenient replacement of the filter element. This structure can conveniently replace the filter element, avoid dust and impurities from causing wear to the seals and other structures, and help improve the dustproof performance of the device.

[0021] Please see Figure 5As shown, the inner wall of the grease nipple 3 is threaded, and a first safety pin 4 is installed on the grease nipple 3. A drain nipple 5 is provided on the side wall of the first half-coupling 1, with threads on its inner wall and a second safety pin 6 installed on it. A mounting hole 24 is provided on the side wall of the first half-coupling 1, with threads on its inner wall, and a third safety pin 25 is installed inside the mounting hole 24. A first flange is provided on one side of the first half-coupling 1, and a sealing gasket 26 is placed at the first flange. A second half-coupling 27 is placed at the other end of the sealing gasket 26, with a second flange on the second half-coupling 27 that engages with the first flange. An inner sleeve 28 is fixedly installed on the inner wall of the second half-coupling 27, and an output shaft 29 and a power shaft 30 are placed inside the inner sleeve 28. During operation, the existing hydraulic couplings are difficult to disassemble due to the cumbersome disassembly process. The ease of disassembly, while convenient, results in poor disassembly of the hydraulic coupling. This is addressed by assembling the first half-coupling 1, the sealing gasket 26, and the second half-coupling 27. Then, the output shaft 29 and the power shaft 30 are inserted into the inner sleeve 28. Hydraulic oil is then injected into the inner cavity 2 through the grease fitting 3 using a high-pressure oil pump. The first safety pin 4 is then tightened to seal the hydraulic oil within the inner cavity 2. Under the action of the hydraulic oil, both the inner and outer diameters of the inner cavity 2 undergo elastic deformation. Under the action of friction, the inner wall of the inner cavity 2 locks with the outer wall of the inner sleeve 28, which in turn locks with the output shaft 29 and the power shaft 30, thus achieving a fixed connection between the hydraulic coupling and the output shaft 29 and the power shaft 30. During disassembly, the hydraulic oil in the inner cavity 2 is quickly released by unscrewing the second safety pin 6 on the grease fitting 5. This structure allows for convenient disassembly of the hydraulic coupling, significantly improving its ease of disassembly.

[0022] Working principle: Existing hydraulic couplings are cumbersome to disassemble during use, making easy disassembly difficult. This results in poor ease of disassembly. The new coupling assembles the first half-coupling 1, the sealing gasket 26, and the second half-coupling 27. Then, the output shaft 29 and the power shaft 30 are inserted into the inner sleeve 28. High-pressure oil is then injected into the inner cavity 2 through the grease nipple 3 using a high-pressure oil pump. Finally, the first safety pin 4 is tightened to seal the hydraulic oil within the inner cavity 2. Under the action of the hydraulic oil... Both the inner and outer diameters of the inner cavity 2 undergo elastic deformation. Under the action of friction, the inner wall of the inner cavity 2 locks with the outer wall of the inner sleeve 28, and the inner wall of the inner sleeve 28 further locks with the output shaft 29 and the power shaft 30, thus achieving a fixed connection between the hydraulic coupling and the output shaft 29 and the power shaft 30. During the disassembly of the hydraulic coupling, the hydraulic oil in the inner cavity 2 can be quickly released by unscrewing the second safety pin 6 on the vent 5. This structure allows for convenient disassembly of the hydraulic coupling, which is beneficial to improving the ease of disassembly. Existing hydraulic couplings... During operation, dust and impurities can seep into the hydraulic oil, easily causing wear on seals and other structural components. Because the device cannot filter dust and impurities, its dustproof performance is poor. A high-pressure oil pump injects hydraulic oil into the inner cavity 2 through the injection nozzle 3, and then the first safety pin 4 is tightened to seal the hydraulic oil within the inner cavity 2. As the hydraulic oil passes through the injection nozzle 3, the first filter element 11 inside filters it, preventing dust and impurities from entering the inner cavity 2, thus achieving highly efficient filtration of the hydraulic oil. During the replacement of the filter element, the new second filter element 12 is placed into the second placement groove 10 of the mounting plate 8 by rotating and unscrewing the third safety pin 25 in the mounting hole 24; then, the drive rod 21 is pressed down, the drive rod 21 compresses the second spring 23, and at the same time, the drive rod 21 pulls the steel wire 22 to move downward in the rod groove 20. The other end of the steel wire 22 pulls the positioning rod 18 to move back into the slide groove 17, the positioning rod 18 compresses the first spring 19, and at this time the positioning rod 18 unlocks the knob 15;Then, rotating knob 15 180° causes connecting rod 14 to rotate 180°, which in turn causes mounting plate 8 to rotate 180°. Simultaneously, the drive rod 21 is released. Under the action of the first spring 19 and the second spring 23, the drive rod 21 moves vertically upward to return to its original position. When the slot 16 on knob 15 aligns with the positioning rod 18, the positioning rod 18 moves into the slot 16, locking knob 15 in place. This achieves a 180° rotation of mounting plate 8, which in turn drives the mounting plate 8... The first placement slot 9 and the second placement slot 10 rotate 180°, and the first filter element 11 and the second filter element 12 inside the first placement slot 9 and the second placement slot 10 rotate 180° to swap positions. The old first filter element 11 is located in the mounting hole 24. The first filter element 11 can be directly removed, and the new second filter element 12 is located at the oil filling nozzle 3, realizing convenient replacement of the filter elements. This structure allows for convenient replacement of the filter elements, avoids wear of seals and other structures caused by dust and impurities, and helps improve the dustproof performance of the device.

[0023] 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 illustrative of the 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.

Claims

1. A dustproof hydraulic coupling, characterized in that: The coupling includes a first half-coupling (1), which has an inner cavity (2). An oil inlet (3) is located on the side wall of the first half-coupling (1). A circular groove (7) is located inside the first half-coupling (1). An mounting plate (8) is rotatably mounted in the circular groove (7). A first placement groove (9) and a second placement groove (10) are located in the mounting plate (8). A first filter element (11) is placed in the first placement groove (9), and a second filter element (12) is placed in the second placement groove (10). A connecting groove (13) is located on the side wall of the first half-coupling (1). The first half-coupling (1) is equipped with a connecting rod (14), which is rotatably connected to the mounting plate (8). A knob (15) is fixedly installed on the top side of the connecting rod (14). A slot (16) is opened in the knob (15). A sliding groove (17) is opened inside the first half-coupling (1). A positioning rod (18) is installed in the sliding groove (17). The positioning rod (18) is installed in the slot (16). A first spring (19) is installed between the positioning rod (18) and the inner wall of the sliding groove (17). A rod groove (20) is opened on the side wall of the first half-coupling (1). A drive rod (21) is installed in the rod groove (20).

2. The dustproof hydraulic coupling according to claim 1, characterized in that: A steel wire (22) is fixedly connected to the bottom side of the drive rod (21), and the other end of the steel wire (22) is connected to the positioning rod (18). A second spring (23) is installed between the drive rod (21) and the inner wall of the rod groove (20). The first spring (19) and the second spring (23) are in a compressed state.

3. A dustproof hydraulic coupling according to claim 1, characterized in that: The inner wall of the oil injection nozzle (3) is threaded, and a first safety pin (4) is installed on the oil injection nozzle (3). The side wall of the first half coupling (1) is provided with an oil drain nozzle (5), the inner wall of the oil drain nozzle (5) is threaded, and a second safety pin (6) is installed on the oil drain nozzle (5).

4. A dustproof hydraulic coupling according to claim 1, characterized in that: The first half-coupling (1) has a mounting hole (24) on its side wall, and the inner wall of the mounting hole (24) has a thread, and a third safety pin (25) is fitted inside the mounting hole (24).

5. A dustproof hydraulic coupling according to claim 1, characterized in that: The first half-coupling (1) has a first flange on one side, and a sealing gasket (26) is placed on the first flange of the first half-coupling (1). The second half-coupling (27) is placed on the other end of the sealing gasket (26). The second half-coupling (27) has a second flange, and the second flange is engaged with the first flange.

6. A dustproof hydraulic coupling according to claim 5, characterized in that: An inner sleeve (28) is fixedly installed on the inner wall of the second half coupling (27), and an output shaft (29) and a power shaft (30) are placed inside the inner sleeve (28).

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