High-oil-pressure crank pin assembly

Abstract

The utility model provides a high oil pressure crank pin assembly, which relates to the technical field of crank pins, and comprises a crank pin, an installation disc is fixedly installed between the inner walls of the crank pin, a bowl-shaped plug is installed between the inner walls of the crank pin, the lower end of the bowl-shaped plug is attached to the upper surface of the installation disc, a positioning assembly is arranged in the bowl-shaped plug, and the positioning assembly is connected with the installation disc. The bowl-shaped plug is connected with the crank pin through a positioning assembly, a clamp spring groove is formed in the inner wall of the crank pin, and a clamp spring is arranged in the clamp spring groove. The bowl-shaped plug is installed in the crank pin, when high-pressure oil abuts against the plug, the clamp spring abuts against the plug, the high-pressure oil cannot leak, and then the assembled crank pin assembly is connected with the crank pin through the clamp spring. By means of the arrangement, the sealing performance of the crank pin oil hole is obviously improved, the rigid plug is not prone to disengaging from the plug containing section even under the high pressure condition, meanwhile, the rigid bowl-shaped plug is not prone to being affected by systematic changes of the hole diameter, and the problem that lubricating oil matched with a crankshaft assembly leaks is solved.

Description

Technical Field

[0001] This utility model relates to the field of crank pin technology, specifically a high-oil-pressure crank pin assembly. Background Technology

[0002] The crank pin consists of a pin and a countersunk screw. The pin is composed of two wedge-shaped bodies 1 and 2. The inner surfaces of the two wedge-shaped bodies 1 and 2 are inclined, and the outer surface of the wedge-shaped body 2 is flat. For example, patent application number CN202221637885.2 describes a crank pin, which relates to the field of crank pin technology. It includes an installation component. The installation component has an installation hole inside, and a wedge-shaped body is inserted inside the installation hole. A fixing pin is inserted inside the wedge-shaped body, and a threaded head is fixedly connected to the right end of the fixing pin. A fixing mechanism is provided on the right side of the threaded head, and the fixing mechanism includes a fixing member. The fixing member has a first threaded hole inside that is threaded to the threaded head. A washer fitted between the fixing member and the installation component is fitted onto the threaded head. This utility model, by providing a fixing mechanism, can ensure the fixation effect of the wedge-shaped body and the fixing pin after installation for a long time. At the same time, it is provided with a reinforcement mechanism, which can further improve the fixing effect between the crank and the fixing pin after the crank and crank connector are connected, and prevent the crank from loosening during operation. In the above technical solution, after the crank pin is installed on the crankshaft assembly, the lubricating oil used with it is prone to leakage under high oil pressure, which affects the use of the crank pin. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a high-oil-pressure crank pin assembly, which solves the problem that the lubricating oil used with the crank pin in the filter is prone to leakage when subjected to high oil pressure after being installed on the crankshaft assembly, thus affecting the use of the crank pin.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a high-pressure oil-pressure crank pin assembly, comprising a crank pin, an mounting plate fixedly installed between the inner walls of the crank pin, a cup-shaped plug installed between the inner walls of the crank pin, the lower end of the cup-shaped plug abutting the upper surface of the mounting plate, a positioning component provided inside the cup-shaped plug, the cup-shaped plug being connected to the crank pin via the positioning component, an oil hole provided on the peripheral side of the crank pin, a retaining spring groove provided on the inner wall of the crank pin, a retaining spring provided inside the retaining spring groove, and the retaining spring abutting the upper surface of the cup-shaped plug.

[0005] Preferably, the upper surface of the mounting plate is provided with a positioning groove, and the bowl-shaped plug is integrally provided with a positioning ring, which is disposed inside the positioning groove.

[0006] Preferably, the inner surface of the positioning groove is provided with a plurality of positioning holes at equal intervals, and the lower surface of the positioning ring is provided with a plurality of positioning posts at equal intervals, the positioning posts being disposed inside the positioning holes.

[0007] Preferably, the positioning assembly includes a screw, a sealing groove, a sealing ring, and a guide rod. The screw is mounted on the inner surface of the cup-shaped plug, the sealing groove is formed on the inner wall of the crank pin, the sealing ring is slidably disposed through the circumferential side of the cup-shaped plug, and the guide rod is fixedly mounted on the inner surface of the cup-shaped plug.

[0008] Preferably, the sealing ring is disposed inside the sealing groove.

[0009] Preferably, a screw sleeve is fitted in the middle of the screw, and several rotating blocks are equidistantly installed on the upper surface of the screw sleeve. A guide disc is slidably installed in the middle of the guide rod, and the screw sleeve is slidably connected to the guide disc.

[0010] Preferably, the inner wall of the guide plate is provided with a sliding groove.

[0011] Preferably, a slip ring is fixedly installed on the peripheral side of the threaded sleeve, and the slip ring is slidably installed inside the slip groove.

[0012] Preferably, a second groove is provided on one side of the sealing ring, and a second rotating shaft is rotatably installed between the inner walls on both sides of the second groove.

[0013] Preferably, the guide disc has a first groove on its side, a first rotating shaft is rotatably mounted between the inner walls of the two sides of the first groove, a connecting rod is fixedly mounted on the side of the first rotating shaft, and the top end of the connecting rod is located on the side of the second rotating shaft.

[0014] This utility model provides a high-pressure hydraulic crank pin assembly. It has the following beneficial effects:

[0015] 1. Insert the cup-shaped plug into the crankpin. When the high-pressure oil presses against the plug, and is also held in place by the retaining spring, the high-pressure oil will not leak. Then, install the assembled crankpin assembly into the crankshaft for assembly, and finally complete the crankshaft assembly. Cup-shaped plugs are set on both sides of the plastic plug. The rigid cup-shaped plug is installed into the plug receiving section with the outer side facing inward, and an interference fit is formed. Then, a retaining spring is added for reinforcement. This setting significantly improves the sealing performance of the crankpin oil hole, and the rigid plug is not easy to fall out of the plug receiving section even under high pressure. At the same time, the rigid cup-shaped plug is not easily affected by the systematic change of the orifice diameter, thus solving the problem of lubricating oil leakage in the crankshaft assembly.

[0016] 2. By rotating the screw sleeve, the screw sleeve moves upward in the middle of the screw rod. The screw rod is installed on the inner surface of the cup-shaped plug. The sealing groove is opened on the inner wall of the crank pin. The sealing ring is slidably installed through the circumference of the cup-shaped plug. The guide rod is fixedly installed on the inner surface of the cup-shaped plug. The sealing ring is set inside the sealing groove. The screw sleeve is fitted in the middle of the screw rod. Several rotating blocks are equidistantly installed on the upper surface of the screw sleeve. The guide plate is slidably installed in the middle of the guide rod. The screw sleeve is slidably connected to the guide plate. The inner wall of the guide plate has a sliding groove. The sliding ring is fixedly installed on the circumference of the screw sleeve. The sliding ring is slidably installed inside the sliding groove. A second groove is opened on one side of the sealing ring. A second rotating shaft is rotatably installed between the inner walls of the two sides of the second groove. A first groove is provided on the side of the guide plate. A first rotating shaft is rotatably installed between the inner walls of the two sides of the first groove. A connecting rod is fixedly installed on the side of the first rotating shaft. The top of the connecting rod is located on the side of the second rotating shaft. At the same time, the guide plate is driven to move upward, and the connecting rod is driven to continue to swing, moving the sealing ring towards the guide plate and placing the sealing ring inside the sealing groove. This provides double fixation for the cup-shaped plug, ensuring the stability of the cup-shaped plug between the inner walls of the crank pin. This setting significantly improves the sealing performance of the crank pin oil hole, and the rigid plug is not easy to fall out of the plug receiving section even under high pressure. At the same time, the rigid cup-shaped plug is not easily affected by systematic changes in the orifice diameter. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 3 This is a top view of the crank pin structure in this utility model;

[0020] Figure 4 This is a top view of the bowl-shaped plug in this utility model;

[0021] Figure 5 This is a front view schematic diagram of the bowl-shaped plug in this utility model;

[0022] Figure 6 This is a schematic diagram of the screw sleeve structure in this utility model;

[0023] Figure 7 This is a schematic diagram of the guide plate in this utility model.

[0024] The components are as follows: 1. Crank pin; 2. Oil hole; 3. Cup plug; 4. Positioning assembly; 401. Screw; 402. Sealing groove; 403. Sealing ring; 404. Screw sleeve; 405. Rotary block; 406. Guide rod; 407. Guide plate; 408. First groove; 409. First rotating shaft; 410. Connecting rod; 411. Second groove; 412. Second rotating shaft; 413. Sliding groove; 414. Sliding ring; 5. Snap ring; 6. Snap ring groove; 7. Mounting plate; 8. Positioning groove; 9. Positioning hole; 10. Positioning ring; 11. Positioning post. Detailed Implementation

[0025] 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.

[0026] like Figure 1 , 2As shown in Figure 3, this embodiment of the present invention provides a high-pressure crank pin assembly, including a crank pin 1. An mounting plate 7 is fixedly installed between the inner walls of the crank pin 1. A cup-shaped plug 3 is installed between the inner walls of the crank pin 1, with its lower end abutting the upper surface of the mounting plate 7. A positioning component 4 is provided inside the cup-shaped plug 3, and the cup-shaped plug 3 is connected to the crank pin 1 through the positioning component 4. An oil hole 2 is provided on the circumferential side of the crank pin 1. A retaining spring groove 6 is formed on the inner wall of the crank pin 1, and a retaining spring 5 is provided inside the retaining spring groove 6. The retaining spring 5 abuts the upper surface of the cup-shaped plug 3. When the cup-shaped plug 3 is inserted into the crank pin 1, if high-pressure oil blocks the flow, the retaining spring 5 will also hold it in place, thus preventing high-pressure oil flow. Oil will not leak. The assembled crankpin assembly is then installed into the crankshaft for final assembly. Cup-shaped plugs are placed on both sides of the plastic plug. The rigid cup-shaped plug is installed into the plug receiving section with the outer side facing inward, forming an interference fit. A retaining spring is then added for reinforcement. After reinforcement with the retaining spring, the worker rotates the threaded sleeve 404, causing it to move upward in the middle of the screw 401. The screw 401 is mounted on the inner surface of the cup-shaped plug 3. The sealing groove 402 is formed on the inner wall of the crankpin 1. The sealing ring 403 slides through and is disposed on the circumference of the cup-shaped plug 3. The guide rod 406 is fixedly installed on the inner surface of the cup-shaped plug 3. The sealing ring 403 is disposed inside the sealing groove 402. A screw sleeve 404 is fitted onto the middle of the screw 401. Several rotating blocks 405 are equidistantly mounted on the upper surface of the screw sleeve 404. A guide plate 407 is slidably mounted on the middle of the guide rod 406. The screw sleeve 404 and the guide plate 407 are slidably connected. A groove 413 is formed on the inner wall of the guide plate 407. A slip ring 414 is fixedly mounted on the circumferential side of the screw sleeve 404 and slidably mounted inside the groove 413. A second groove 411 is formed on one side of the sealing ring 403. A second rotating shaft 412 is rotatably mounted between the inner walls of the two sides of the second groove 411. A first groove 408 is formed on the side of the guide plate 407. A first rotating shaft 409 is rotatably mounted between the inner walls of the two sides of the first groove 408. A connecting rod 410 is fixedly installed on the side, with the top end of the connecting rod 410 positioned on the side of the second rotating shaft 412. This causes the guide plate 407 to move upward, while simultaneously driving the connecting rod 410 to continue swinging, moving the sealing ring 403 towards the guide plate 407. The sealing ring 403 is then positioned inside the sealing groove 402, providing double fixation for the cup-shaped plug 3 and ensuring its stability within the inner wall of the crankpin 1. This design significantly improves the sealing performance of the crankpin oil hole, and the rigid plug is not easily dislodged from the plug receiving section even under high pressure. Furthermore, the rigid cup-shaped plug is not easily affected by systematic changes in the orifice diameter, thus solving the problem of lubricating oil leakage in the crankshaft assembly.

[0027] like Figure 3 , 5As shown, the upper surface of the mounting plate 7 is provided with a positioning groove 8, and the cup-shaped plug 3 is integrally provided with a positioning ring 10. The positioning ring 10 is disposed inside the positioning groove 8. A plurality of positioning holes 9 are equidistantly provided on the inner surface of the positioning groove 8. A plurality of positioning posts 11 are fixedly installed equidistantly on the lower surface of the positioning ring 10. The positioning posts 11 are disposed inside the positioning holes 9. By placing the positioning ring 10 inside the positioning groove 8 and the positioning posts 11 inside the positioning holes 9, the stability of the cup-shaped plug 3 between the inner walls of the crank pin 1 can be improved.

[0028] like Figure 2 , 3As shown in Figures 4, 5, 6, and 7, the positioning assembly 4 includes a screw 401, a sealing groove 402, a sealing ring 403, and a guide rod 406. The screw 401 is installed on the inner surface of the cup-shaped plug 3. The sealing groove 402 is formed on the inner wall of the crank pin 1. The sealing ring 403 is slidably disposed through the circumference of the cup-shaped plug 3. The guide rod 406 is fixedly installed on the inner surface of the cup-shaped plug 3. The sealing ring 403 is disposed inside the sealing groove 402. A threaded sleeve 404 is sleeved on the middle of the screw 401. Several rotating blocks 405 are equidistantly installed on the upper surface of the threaded sleeve 404. A guide plate 407 is slidably installed on the middle of the guide rod 406. The threaded sleeve 404 is slidably connected to the guide plate 407. A sliding groove 413 is formed on the inner wall of the guide plate 407. A slip ring 414 is fixedly installed on the circumferential side of the threaded sleeve 404. The slip ring 414 is slidably installed inside the slide groove 413. A second groove 411 is opened on one side of the sealing ring 403. A second rotating shaft 412 is rotatably installed between the inner walls of the two sides of the second groove 411. A first groove 408 is opened on the side of the guide plate 407. A first rotating shaft 409 is rotatably installed between the inner walls of the two sides of the first groove 408. A connecting rod 410 is fixedly installed on the side of the first rotating shaft 409. The top end of the connecting rod 410 is located on the side of the second rotating shaft 412. By rotating the threaded sleeve 404, the threaded sleeve 404 moves upward in the middle of the screw 401. The screw 401 is installed on the inner surface of the cup-shaped plug 3. The sealing groove 402 is opened on the crank pin. On the inner wall of the cup-shaped plug 3, a sealing ring 403 is slidably disposed through the side of the cup-shaped plug 3. A guide rod 406 is fixedly installed on the inner surface of the cup-shaped plug 3. The sealing ring 403 is disposed inside the sealing groove 402. A screw sleeve 404 is sleeved on the middle of the screw rod 401. Several rotating blocks 405 are equidistantly installed on the upper surface of the screw sleeve 404. A guide plate 407 is slidably installed on the middle of the guide rod 406. The screw sleeve 404 is slidably connected to the guide plate 407. A sliding groove 413 is opened on the inner wall of the guide plate 407. A sliding ring 414 is fixedly installed on the side of the screw sleeve 404. The sliding ring 414 is slidably installed inside the sliding groove 413. A second groove 411 is opened on one side of the sealing ring 403. A second rotating shaft 412 is rotatably installed between the inner walls of the two sides of the second groove 411. A second groove 411 is opened on the side of the guide plate 407. A first groove 408 is provided, and a first rotating shaft 409 is rotatably installed between the inner walls of the two sides of the first groove 408. A connecting rod 410 is fixedly installed on the side of the first rotating shaft 409. The top of the connecting rod 410 is located on the side of the second rotating shaft 412. At the same time, it will drive the guide plate 407 to move upward, and drive the connecting rod 410 to continue to swing, moving the sealing ring 403 towards the guide plate 407. The sealing ring 403 is placed inside the sealing groove 402, which provides double fixation for the cup-shaped plug 3 and ensures the stability of the cup-shaped plug 3 between the inner walls of the crank pin 1. This setting significantly improves the sealing performance of the crank pin oil hole, and the rigid plug is not easy to fall out of the plug receiving section even under high pressure. At the same time, the rigid cup-shaped plug is not easily affected by the systematic change of the orifice diameter.

[0029] Working principle: The cup-shaped plug 3 is installed into the crank pin 1. When the high-pressure oil presses against the plug, and is also held in place by the retaining spring 5, the high-pressure oil will not leak. Then, the assembled crank pin assembly is installed into the crankshaft for assembly, and finally the crankshaft assembly is completed. Cup-shaped plugs are set on both sides of the plastic plug. The rigid cup-shaped plug is installed into the plug receiving section with the outer side facing inward, and an interference fit is formed. Then, a retaining spring is added for reinforcement. After reinforcement by the retaining spring, the operator rotates the screw sleeve 404. The screw sleeve 404 moves upward in the middle of the screw 401, and the screw... A rod 401 is installed on the inner surface of the cup-shaped plug 3. A sealing groove 402 is formed on the inner wall of the crank pin 1. A sealing ring 403 is slidably disposed on the circumference of the cup-shaped plug 3. A guide rod 406 is fixedly installed on the inner surface of the cup-shaped plug 3. The sealing ring 403 is disposed inside the sealing groove 402. A threaded sleeve 404 is sleeved on the middle of the screw 401. Several rotating blocks 405 are equidistantly installed on the upper surface of the threaded sleeve 404. A guide plate 407 is slidably installed on the middle of the guide rod 406. The threaded sleeve 404 is slidably connected to the guide plate 407. A groove 413 is formed on the inner wall of the guide plate 407. A slip ring 414 is fixedly installed on the circumferential side of the threaded sleeve 404. The slip ring 414 is slidably installed inside the slide groove 413. A second groove 411 is opened on one side of the sealing ring 403. A second rotating shaft 412 is rotatably installed between the inner walls of the two sides of the second groove 411. A first groove 408 is opened on the side of the guide plate 407. A first rotating shaft 409 is rotatably installed between the inner walls of the two sides of the first groove 408. A connecting rod 410 is fixedly installed on the side of the first rotating shaft 409. The top end of the connecting rod 410 is located on the side of the second rotating shaft 412, which will drive the guide plate 407. 7. Move upwards while driving the connecting rod 410 to continue swinging, moving the sealing ring 403 towards the principle guide plate 407, and placing the sealing ring 403 inside the sealing groove 402, which doubles the fixation of the cup-shaped plug 3, ensuring the stability of the cup-shaped plug 3 between the inner walls of the crank pin 1. This setting significantly improves the sealing performance of the crank pin oil hole, and the rigid plug is not easy to fall out of the plug receiving section even under high pressure. At the same time, the rigid cup-shaped plug is not easily affected by the systematic change of the orifice diameter, thus solving the problem of lubricating oil leakage in the crankshaft assembly.

[0030] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A high-pressure hydraulic crank pin assembly, comprising a crank pin (1), characterized in that, An mounting plate (7) is fixedly installed between the inner walls of the crank pin (1). A cup-shaped plug (3) is installed between the inner walls of the crank pin (1). The lower end of the cup-shaped plug (3) is attached to the upper surface of the mounting plate (7). A positioning component (4) is provided inside the cup-shaped plug (3). The cup-shaped plug (3) is connected to the crank pin (1) through the positioning component (4). An oil hole (2) is provided on the peripheral side of the crank pin (1). A retaining spring groove (6) is opened on the inner wall of the crank pin (1). A retaining spring (5) is provided inside the retaining spring groove (6). The retaining spring (5) is attached to the upper surface of the cup-shaped plug (3).

2. The high-pressure oil crankpin assembly according to claim 1, characterized in that, The mounting plate (7) has a positioning groove (8) on its upper surface, and the bowl-shaped plug (3) is integrally provided with a positioning ring (10), which is located inside the positioning groove (8).

3. A high-pressure hydraulic crank pin assembly according to claim 2, characterized in that, The positioning groove (8) has several positioning holes (9) evenly spaced on its inner surface, and several positioning posts (11) are fixedly installed evenly on the lower surface of the positioning ring (10), with the positioning posts (11) set inside the positioning holes (9).

4. A high-pressure hydraulic crankpin assembly according to claim 1, characterized in that, The positioning component (4) includes a screw (401), a sealing groove (402), a sealing ring (403), and a guide rod (406). The screw (401) is installed on the inner surface of the cup-shaped plug (3), the sealing groove (402) is opened on the inner wall of the crank pin (1), the sealing ring (403) is slidably disposed on the circumferential side of the cup-shaped plug (3), and the guide rod (406) is fixedly installed on the inner surface of the cup-shaped plug (3).

5. A high-oil-pressure crank pin assembly according to claim 4, characterized in that, The sealing ring (403) is disposed inside the sealing groove (402).

6. A high-pressure hydraulic crankpin assembly according to claim 5, characterized in that, A screw sleeve (404) is fitted in the middle of the screw (401), and a number of rotating blocks (405) are installed at equal intervals on the upper surface of the screw sleeve (404). A guide plate (407) is slidably installed in the middle of the guide rod (406), and the screw sleeve (404) is slidably connected to the guide plate (407).

7. A high-pressure hydraulic crankpin assembly according to claim 6, characterized in that, The inner wall of the guide plate (407) is provided with a groove (413).

8. A high-pressure hydraulic crankpin assembly according to claim 7, characterized in that, A slip ring (414) is fixedly installed on the circumferential side of the threaded sleeve (404), and the slip ring (414) is slidably installed inside the slide groove (413).

9. A high-pressure hydraulic crankpin assembly according to claim 8, characterized in that, A second groove (411) is provided on one side of the sealing ring (403), and a second rotating shaft (412) is rotatably installed between the inner walls on both sides of the second groove (411).

10. A high-pressure hydraulic crankpin assembly according to claim 9, characterized in that, The guide plate (407) has a first groove (408) on its side. A first rotating shaft (409) is rotatably installed between the inner walls of the two sides of the first groove (408). A connecting rod (410) is fixedly installed on the side of the first rotating shaft (409). The top end of the connecting rod (410) is located on the side of the second rotating shaft (412).

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