High-oil-pressure crank pin assembly

Abstract

The invention provides a high-oil-pressure crank pin assembly and relates to the technical field of crank pins, the high-oil-pressure crank pin assembly comprises a crank pin, a mounting disc is fixedly mounted between the inner walls of the crank pin, a bowl-shaped plug is mounted between the inner walls of the crank pin, the lower end of the bowl-shaped plug is attached to the upper surface of the mounting disc, and a positioning assembly is arranged in the bowl-shaped plug; the bowl-shaped plug is installed in the crank pin of the crank pin, when high-pressure oil abuts against the plug, the high-pressure oil abuts against the plug through the snap spring, the high-pressure oil cannot leak, then the assembled crank pin assembly is installed in a crankshaft, the crank pin assembly is installed in the crankshaft, the crank pin assembly is installed in the crankshaft, and the crank pin assembly is installed in the crankshaft. By means of the arrangement, the sealing performance of the crank pin oil hole is obviously improved, the rigid plug is not prone to being disengaged 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] The invention relates to the technical field of crank pins, in particular to a high oil pressure crank pin assembly. Background Art

[0002] The crank pin is composed of a pin and a countersunk screw. The pin is two wedge-shaped bodies 1 and 2. The inner surfaces of the two wedge-shaped bodies 1 and 2 are inclined surfaces, and the outer surface of the wedge-shaped body 2 is a plane. As shown in patent application number CN202221637885.2, a crank pin relates to the technical field of crank pins, including a mounting piece, a mounting hole is opened inside the mounting piece, and a wedge-shaped body is inserted inside the mounting hole, a fixing pin is inserted inside the wedge-shaped body, and the right end of the fixing pin is fixedly connected with a threaded head, a fixing mechanism is provided on the right side of the threaded head, and the fixing mechanism includes a fixing piece, a fixing piece is provided on the right side of the threaded head, and a first threaded hole threadedly connected to the threaded head is opened inside the fixing piece, and a gasket sleeved on the threaded head is tightly fitted between the fixing piece and the mounting piece. The utility model is provided with a fixing mechanism, which can ensure the fixing effect of the wedge body and the fixing pin after installation for a long time. At the same time, a reinforcement mechanism is provided, which can further enhance the fixing effect between the crank and the fixing pin after the crank and the crank connecting piece are connected, thereby avoiding the crank from loosening during movement. In the above technical scheme, after the crank pin is installed on the crankshaft assembly, the lubricating oil used in conjunction with it is prone to leakage after being subjected to high oil pressure, thereby affecting the use of the crank pin. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a high oil pressure crank pin assembly, which solves the problem that after the crank pin in the filter is installed on the crankshaft assembly, the lubricating oil used in conjunction with it is prone to leakage after being subjected to high oil pressure, thereby affecting the use of the crank pin.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-oil pressure crank pin assembly, comprising a crank pin, a mounting plate fixedly installed between the inner walls of the crank pin, a bowl-shaped plug 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 mounting plate, a positioning assembly is arranged inside the bowl-shaped plug, the bowl-shaped plug is connected to the crank pin through the positioning assembly, oil holes are arranged on the peripheral side of the crank pin, a retaining ring groove is opened on the inner wall of the crank pin, a retaining ring is arranged inside the retaining ring groove, and the retaining ring is attached to the upper surface of the bowl-shaped plug.

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

[0006] Preferably, a plurality of positioning holes are equidistantly formed on the inner surface of the positioning groove, and a plurality of positioning columns are equidistantly fixedly mounted on the lower surface of the positioning ring, and the positioning columns are arranged 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 installed on the inner surface of the bowl-shaped plug, the sealing groove is opened on the inner wall of the crank pin, the sealing ring is slidably penetrated and arranged on the side surface of the bowl-shaped plug, and the guide rod is fixedly installed on the inner surface of the bowl-shaped plug.

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

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

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

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

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

[0013] Preferably, a first groove is opened on the side of the guide plate, a first rotating shaft is rotatably installed between the inner walls on both sides of the first groove, a connecting rod is fixedly installed on the side of the first rotating shaft, and the top end of the connecting rod is arranged on the side of the second rotating shaft.

[0014] The present invention provides a high oil pressure crank pin assembly. It has the following beneficial effects:

[0015] 1. Install the bowl-shaped plug into the crank pin. When the high-pressure oil presses against the plug and the retaining spring presses against it, the high-pressure oil will not leak. Then install the assembled crank pin assembly into the crankshaft for assembly. Finally, the crankshaft assembly is completed. Bowl-shaped plugs are set on both sides of the plastic plug. The rigid bowl-shaped plug is installed into the plug accommodating section with the outer side facing inward, and an interference fit is formed with it. Then the retaining spring is added to reinforce it. This setting significantly improves the sealing of the crank pin oil hole, and the rigid plug is not easy to fall out of the plug accommodating section even under high pressure. At the same time, the rigid bowl-shaped plug is not easily affected by the systematic change of the aperture, which solves the problem of lubricating oil leakage in the crankshaft assembly.

[0016] 2. The staff rotates the screw sleeve. The screw sleeve moves upward in the middle of the screw, and the screw is installed on the inner surface of the bowl-shaped plug. The sealing groove is set on the inner wall of the crank pin. The sealing ring is slidably penetrated and set on the side of the bowl-shaped plug. The guide rod is fixedly installed on the inner surface of the bowl-shaped plug. The sealing ring is set inside the sealing groove. The middle part of the screw is sleeved and installed with a screw sleeve. Several rotating blocks are equidistantly installed on the upper surface of the screw sleeve. A guide plate is slidably installed in the middle of the guide rod. The screw sleeve is slidably connected with the guide plate. A sliding groove is opened on the inner wall of the guide plate. A slip ring is fixedly installed on the side of the screw sleeve. The slip 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 on both sides of the second groove. A first groove is provided on the side of the guide plate, and a first rotating shaft is rotatably installed between the inner walls on both sides of the first groove. A connecting rod is fixedly installed on the side of the first rotating shaft, and the top of the connecting rod is arranged on the side of the second rotating shaft, which will drive the guide plate to move upward and drive the connecting rod to continue to swing, and move the sealing ring in the direction of the principle guide plate. The sealing ring is arranged in the sealing groove, which plays a double fixation on the bowl-shaped plug and ensures the stability of the bowl-shaped plug between the inner walls of the crank pin. This arrangement significantly improves the sealing of the crank pin oil hole, and the rigid plug is not easy to fall out of the plugging accommodating section even under high pressure. At the same time, the rigid bowl-shaped plug is not easily affected by systematic changes in the aperture. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the top view of the crank pin structure in the present invention;

[0020] Figure 4 It is a schematic diagram of the top view of the bowl-shaped plug in the present invention;

[0021] Figure 5 It is a front view structural diagram of the bowl-shaped plug in the present invention;

[0022] Figure 6 It is a schematic diagram of the screw sleeve structure in the present invention;

[0023] Figure 7 It is a schematic structural diagram of the guide plate in the present invention.

[0024] Among them, 1. crank pin; 2. oil hole; 3. bowl-shaped plug; 4. positioning assembly; 401. screw; 402. sealing groove; 403. sealing ring; 404. screw sleeve; 405. rotating 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. slide groove; 414. slip ring; 5. retaining ring; 6. retaining ring groove; 7. mounting plate; 8. positioning groove; 9. positioning hole; 10. positioning ring; 11. positioning column. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figure 1 , 2As shown in Figure 3, an embodiment of the present invention provides a high-oil pressure crank pin assembly, including a crank pin 1, a mounting plate 7 is fixedly installed between the inner walls of the crank pin 1, a bowl-shaped plug 3 is installed between the inner walls of the crank pin 1, the lower end of the bowl-shaped plug 3 is fitted on the upper surface of the mounting plate 7, a positioning assembly 4 is arranged inside the bowl-shaped plug 3, the bowl-shaped plug 3 is connected to the crank pin 1 through the positioning assembly 4, an oil hole 2 is arranged on the side surface 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 arranged inside the retaining spring groove 6, the retaining spring 5 is fitted on the upper surface of the bowl-shaped plug 3, the bowl-shaped plug 3 is installed into the crank pin 1, when the high-pressure oil is blocked, and the retaining spring 5 is also blocked, the high-pressure oil There will be no leakage, and then the assembled crank pin assembly is installed into the crankshaft for assembly, and finally the crankshaft assembly is completed. Bowl-shaped plugs are set on both sides of the plastic plug, and the rigid bowl-shaped plug is installed into the plug accommodating section with the outer side facing inward, and an interference fit is formed with it, and then a retaining spring is added for reinforcement. After the retaining spring is reinforced, the staff rotates the screw sleeve 404 at this time. The screw sleeve 404 moves upward in the middle of the screw rod 401, and the screw rod 401 is installed on the inner surface of the bowl-shaped plug 3, the sealing groove 402 is opened on the inner wall of the crank pin 1, and the sealing ring 403 is slidably penetrated and arranged on the side of the bowl-shaped plug 3. The guide rod 406 is fixedly installed on the inner surface of the bowl-shaped plug 3, and the sealing ring 403 is arranged inside the sealing groove 402. A screw sleeve 404 is sleeved and installed in the middle of the screw rod 401, and a plurality of rotating blocks 405 are equidistantly installed on the upper surface of the screw sleeve 404. A guide plate 407 is slidably installed in the middle of the guide rod 406. The screw sleeve 404 is slidably connected to the guide plate 407. A sliding groove 413 is provided 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 provided on one side of the sealing ring 403. A second rotating shaft 412 is rotatably installed between the inner walls on both sides of the second groove 411. A first groove 408 is provided on the side of the guide plate 407. A first rotating shaft 409 is rotatably installed between the inner walls on both sides of the first groove 408. The first rotating shaft 409 A connecting rod 410 is fixedly installed on the side, and the top of the connecting rod 410 is set on the side of the second rotating shaft 412, which will drive the guide plate 407 to move upward, and at the same time drive the connecting rod 410 to continue to swing, so as to move the sealing ring 403 in the direction of the principle guide plate 407, and set the sealing ring 403 inside the sealing groove 402, so as to doubly fix the bowl-shaped plug 3 and ensure the stability of the bowl-shaped plug 3 between the inner wall of the crank pin 1. This arrangement significantly improves the sealing of the crank pin oil hole, and the rigid plug is not easy to fall out of the plugging accommodating section even under high pressure. At the same time, the rigid bowl-shaped plug is not easily affected by the systematic change of the aperture, thereby solving the problem of lubricating oil leakage in the crankshaft assembly.

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

[0028] like Figure 2 , 3, 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 bowl-shaped plug 3, the sealing groove 402 is provided on the inner wall of the crank pin 1, the sealing ring 403 is slidably penetrated and provided on the side surface of the bowl-shaped plug 3, the guide rod 406 is fixedly installed on the inner surface of the bowl-shaped plug 3, the sealing ring 403 is provided inside the sealing groove 402, a threaded sleeve 404 is sleeved and installed in the middle of the screw 401, a plurality of rotating blocks 405 are equidistantly installed on the upper surface of the threaded sleeve 404, a guide plate 407 is slidably installed in the middle of the guide rod 406, the threaded sleeve 404 is slidably connected to the guide plate 407, and a slide groove 413 is provided on the inner wall of the guide plate 407 A slip ring 414 is fixedly installed on the side of the screw sleeve 404, and the slip ring 414 is slidably installed in the slide groove 413. A second groove 411 is opened on one side of the sealing ring 403, and a second shaft 412 is rotatably installed between the inner walls on both sides of the second groove 411. A first groove 408 is opened on the side of the guide plate 407, and a first shaft 409 is rotatably installed between the inner walls on both sides of the first groove 408. A connecting rod 410 is fixedly installed on the side of the first shaft 409, and the top of the connecting rod 410 is arranged on the side of the second shaft 412. The screw sleeve 404 is rotated by the staff. The screw sleeve 404 moves upward in the middle of the screw rod 401, and the screw rod 401 is installed on the inner surface of the bowl-shaped plug 3. The sealing groove 402 is opened on the crank pin 1, a sealing ring 403 is slidably penetrated and arranged on the side of the bowl-shaped plug 3, a guide rod 406 is fixedly installed on the inner surface of the bowl-shaped plug 3, the sealing ring 403 is arranged inside the sealing groove 402, a screw sleeve 404 is sleeved and installed in the middle of the screw 401, a plurality of rotating blocks 405 are equidistantly installed on the upper surface of the screw sleeve 404, a guide plate 407 is slidably installed in the middle of the guide rod 406, the screw sleeve 404 is slidably connected with 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, and the sliding ring 414 is slidably installed in 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 on both sides of the second groove 411, and a second rotating shaft 412 is rotatably installed between the inner walls on both sides of the second groove 411, and a second rotating shaft 412 is rotatably installed on the side of the guide plate 407 A groove 408, a first rotating shaft 409 is rotatably installed between the inner walls on both sides of the first groove 408, a connecting rod 410 is fixedly installed on the side of the first rotating shaft 409, and the top of the connecting rod 410 is arranged on the side of the second rotating shaft 412, which will drive the guide plate 407 to move upward, and at the same time drive the connecting rod 410 to continue to swing, and move the sealing ring 403 in the direction of the principle guide plate 407, and set the sealing ring 403 inside the sealing groove 402, which plays a double fixation on the bowl-shaped plug 3 and ensures the stability of the bowl-shaped plug 3 between the inner walls of the crank pin 1. This arrangement significantly improves the sealing of the crank pin oil hole, and the rigid plug is not easy to fall out of the plugging accommodating section even under high pressure. At the same time, the rigid bowl-shaped plug is not easily affected by systematic changes in the aperture.

[0029] Working principle: install the bowl-shaped plug 3 into the crank pin 1. When the high-pressure oil is blocked by the plug and the retaining spring 5 is used to block it, the high-pressure oil will not leak. Then install the assembled crank pin assembly into the crankshaft for assembly. Finally, the crankshaft assembly is completed. Bowl-shaped plugs are set on both sides of the plastic plug. Install the rigid bowl-shaped plug into the plug accommodating section with the outer side facing inward and form an interference fit with it. Then add the retaining spring to reinforce it. After being reinforced by the retaining spring, the staff will turn the screw sleeve 404. The screw sleeve 404 moves upward in the middle of the screw rod 401, and the screw rod 401 is rotated by the staff. The rod 401 is installed on the inner surface of the bowl-shaped plug 3, the sealing groove 402 is opened on the inner wall of the crank pin 1, the sealing ring 403 is slidably penetrated and arranged on the side of the bowl-shaped plug 3, the guide rod 406 is fixedly installed on the inner surface of the bowl-shaped plug 3, the sealing ring 403 is arranged inside the sealing groove 402, the middle part of the screw rod 401 is sleeved with a screw sleeve 404, and a plurality of rotating blocks 405 are equidistantly installed on the upper surface of the screw sleeve 404, and a guide plate 407 is slidably installed in the middle part of the guide rod 406, the screw sleeve 404 is slidably connected with the guide plate 407, and the inner wall of the guide plate 407 is provided with a slide groove 413 A slip ring 414 is fixedly installed on the side of the screw sleeve 404, and the slip ring 414 is slidably installed in the slide groove 413. A second groove 411 is opened 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. A first groove 408 is opened on the side of the guide plate 407, and a first rotating shaft 409 is rotatably installed between the inner walls on both sides of the first groove 408. A connecting rod 410 is fixedly installed on the side of the first rotating shaft 409, and the top of the connecting rod 410 is set on the side of the second rotating shaft 412, and at the same time, it will drive the guide plate 40 7 moves upward, and at the same time drives the connecting rod 410 to continue to swing, so as to move the sealing ring 403 in the direction of the principle guide plate 407, and set the sealing ring 403 inside the sealing groove 402, so as to double fix the bowl-shaped plug 3 and ensure the stability of the bowl-shaped plug 3 between the inner wall of the crank pin 1. This arrangement significantly improves the sealing performance of the crank pin oil hole, and the rigid plug is not easy to fall out of the plugging accommodating section even under high pressure. At the same time, the rigid bowl-shaped plug is not easily affected by the systematic change of the aperture, thereby solving the problem of lubricating oil leakage in the crankshaft assembly.

[0030] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A high oil pressure crank pin assembly, comprising a crank pin (1), characterized in that: A mounting plate (7) is fixedly mounted between the inner walls of the crank pin (1), a bowl-shaped plug (3) is mounted between the inner walls of the crank pin (1), the lower end of the bowl-shaped plug (3) is fitted on the upper surface of the mounting plate (7), a positioning assembly (4) is arranged inside the bowl-shaped plug (3), the bowl-shaped plug (3) is connected to the crank pin (1) via the positioning assembly (4), an oil hole (2) is arranged on the peripheral side of the crank pin (1), a retaining ring groove (6) is provided on the inner wall of the crank pin (1), a retaining ring (5) is arranged inside the retaining ring groove (6), and the retaining ring (5) is fitted on the upper surface of the bowl-shaped plug (3).

2. A high oil pressure crank pin assembly according to claim 1, characterized in that: A positioning groove (8) is provided on the upper surface of the mounting plate (7), and a positioning ring (10) is integrally provided on the bowl-shaped plug (3), wherein the positioning ring (10) is arranged inside the positioning groove (8).

3. A high oil pressure crank pin assembly according to claim 2, characterized in that: The inner surface of the positioning groove (8) is provided with a plurality of positioning holes (9) at equal intervals, and the lower surface of the positioning ring (10) is provided with a plurality of positioning columns (11) fixedly installed at equal intervals, and the positioning columns (11) are arranged inside the positioning holes (9).

4. A high oil pressure crank pin assembly according to claim 1, characterized in that: The positioning assembly (4) comprises 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 bowl-shaped plug (3); the sealing groove (402) is provided on the inner wall of the crank pin (1); the sealing ring (403) is slidably penetrated and arranged on the peripheral side of the bowl-shaped plug (3); and the guide rod (406) is fixedly installed on the inner surface of the bowl-shaped plug (3).

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

6. A high oil pressure crank pin assembly according to claim 5, characterized in that: A screw sleeve (404) is sleeved and installed in the middle of the screw rod (401), a plurality of rotating blocks (405) are equidistantly installed 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 oil pressure crank pin assembly according to claim 1, characterized in that: The inner wall of the guide plate (407) is provided with a sliding groove (413).

8. A high oil pressure crank pin assembly according to claim 7, characterized in that: A slip ring (414) is fixedly mounted on the peripheral side of the screw sleeve (404), and the slip ring (414) is slidably mounted inside the slide groove (413).

9. A high oil pressure crank pin assembly according to claim 8, characterized in that: A second groove (411) is formed on one side of the sealing ring (403), and a second rotating shaft (412) is rotatably mounted between inner walls on both sides of the second groove (411).

10. A high oil pressure crank pin assembly according to claim 9, characterized in that: A first groove (408) is provided on the side of the guide plate (407), a first rotating shaft (409) is rotatably installed between the inner walls on both sides of the first groove (408), a connecting rod (410) is fixedly installed on the side of the first rotating shaft (409), and the top end of the connecting rod (410) is arranged on the side of the second rotating shaft (412).

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