Pin assembly structure and assembly method for easy lubrication

Abstract

The present invention provides a pin assembly structure and an assembly method that are easy to lubricate, which includes a secondary pin, a main pin is mounted on the secondary pin, both ends of the main pin are supported on symmetrically arranged main pin seats through wear-resistant sleeves, a main pin assembly is installed in the middle of the main pin, and shaft end limiting structures are symmetrically installed on the secondary pin and at both ends of the main pin, and a lubrication structure for lubrication is arranged between the shaft end limiting structure and the main pin. This pin assembly structure adopts an interference assembly method and is provided with a lubrication system, which can effectively transmit the torque required by the assembly and offset the axial component force, and is suitable for installation and use in occasions where torque and axial force need to be transmitted.

Description

Technical Field

[0001] The invention relates to the technical field of pin shaft assembly, and in particular to a pin shaft assembly structure and an assembly method which can facilitate lubrication. Background Art

[0002] At present, the pin connection method used in situations where axial force and torque need to be transmitted is prone to causing wear of the main pin shaft, and the axial force cannot be completely offset by the pin shaft itself, which is insufficient. This invention can effectively solve this difficulty. Summary of the invention

[0003] The purpose of the present invention is to provide a pin shaft assembly structure and assembly method that are easy to lubricate. This pin shaft assembly structure adopts an interference assembly method and is equipped with a lubrication system. It can effectively transmit the torque required by the assembly and offset the axial force component. It is suitable for installation and use in situations where torque and axial force need to be transmitted.

[0004] In order to realize the above-mentioned technical features, the purpose of the present invention is achieved as follows: a pin shaft assembly structure that is easy to lubricate, which includes a secondary pin shaft, on which a main pin shaft is mounted, and both ends of the main pin shaft are respectively supported on symmetrically arranged main pin shaft seats through wear-resistant sleeves, a main pin shaft assembly is installed in the middle part of the main pin shaft, and shaft end limiting structures are symmetrically installed on the secondary pin shaft and at both ends of the main pin shaft, and a lubrication structure for lubrication is arranged between the shaft end limiting structure and the main pin shaft.

[0005] The shaft end limiting structure includes a pin cover fixed on the outer end surface of the wear-resistant sleeve, the pin cover and the wear-resistant sleeve are fixed to the main pin shaft seat by a first bolt, the two ends of the secondary pin shaft are processed with threaded sections, the threaded sections are equipped with a pin thread cover by threaded cooperation, and the pin thread cover and the pin cover are fixedly connected by a second bolt.

[0006] The lubrication structure includes a lubrication gasket, which is arranged between the pin shaft cover of the shaft end limiting structure and the outer end surface of the main pin shaft, and the lubrication gasket is fixed to the inner end surface of the pin shaft cover by a third bolt; a lubrication oil channel structure is arranged between the pin shaft cover, the lubrication gasket, the main pin shaft and the wear-resistant sleeve.

[0007] The lubricating oil channel structure includes a radial oil filling hole processed on the pin shaft pressure cover, the bottom end of the radial oil filling hole is connected to the top of the lubricating gasket, and an oil filling nozzle is fixedly installed on the top of the radial oil filling hole. The end surface of the lubricating gasket that matches the kingpin shaft is processed with a first annular oil groove, and the outer end surface of the kingpin shaft is evenly processed with multiple storage holes.

[0008] The inner cavity of the wear-resistant sleeve is processed with a second annular oil groove arranged in an annular shape, and the outer edge of the end of the kingpin shaft is processed with a chamfered structure.

[0009] The wear-resistant sleeve is a copper sleeve.

[0010] The kingpin shaft assembly is limited by a shaft collar arranged on the kingpin shaft.

[0011] The kingpin shaft assembly and the kingpin shaft are in interference fit and transmit torque.

[0012] The assembly method of the pin assembly structure that is easy to lubricate includes the following steps:

[0013] Step 1: Set the kingpin shaft assembly between the kingpin shaft seats;

[0014] Step 2: Pass the kingpin shaft through the kingpin shaft seat on one side, and position and install the kingpin shaft assembly on the kingpin shaft by interference fit;

[0015] Step 3: Install wear-resistant sleeves on both ends of the kingpin shaft and fix the wear-resistant sleeves inside the kingpin shaft seat;

[0016] Step 4: Install the secondary pin shaft inside the main pin shaft;

[0017] Step 5: Install the lubrication washer, the pin gland and the pin thread gland on both ends of the secondary pin shaft respectively, and fix the pin gland on the main pin shaft seat with the first bolt;

[0018] Step 6: During operation, inject lubricating grease into the radial oil filling hole through the oil filling nozzle. The lubricating grease is injected into the contact end surface between the lubricating washer and the kingpin shaft, the contact surface between the wear-resistant sleeve and the kingpin shaft, and the contact surface between the kingpin shaft and the secondary pin shaft through the radial oil filling hole.

[0019] The present invention has the following beneficial effects:

[0020] 1. This pin assembly structure adopts interference assembly and is equipped with a lubrication system, which can effectively transmit the torque required by the assembly and offset the axial force. It is suitable for installation and use in situations where torque and axial force need to be transmitted.

[0021] 2. The above-mentioned shaft end limiting structure can be used to axially limit the main pin shaft installed on the secondary pin shaft, and enable it to withstand a certain axial force.

[0022] 3. The above-mentioned lubrication structure can effectively lubricate the main pin shaft and the auxiliary pin shaft.

[0023] 4. The above-mentioned lubricating oil channel structure can fully lubricate the various relatively moving parts inside the above-mentioned assembly structure.

[0024] 5. The chamfered structure facilitates the assembly of parts and components and the injection and storage of lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] Figure 1 It is the main sectional view of the present invention.

[0027] In the figure: pin thread cover 1, threaded section 2, third bolt 3, second bolt 4, first bolt 5, pin cover 6, radial oil filling hole 7, oil filling nozzle 8, lubrication gasket 9, chamfer structure 10, storage hole 11, wear-resistant sleeve 12, shaft collar 13, kingpin shaft assembly 14, kingpin shaft 15, secondary pin shaft 16, second annular oil groove 17, first annular oil groove 18, kingpin shaft seat 19. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0029] Embodiment 1:

[0030] See also Figure 1 , a pin assembly structure that is easy to lubricate, it includes a secondary pin 16, a main pin 15 is mounted on the secondary pin 16, both ends of the main pin 15 are supported on symmetrically arranged main pin seats 19 through wear-resistant sleeves 12, a main pin assembly 14 is installed in the middle of the main pin 15, and shaft end limit structures are symmetrically installed on the secondary pin 16 and at both ends of the main pin 15, and a lubrication structure for lubrication is arranged between the shaft end limit structure and the main pin 15. This pin assembly structure adopts an interference fit assembly method and is equipped with a lubrication system, which can effectively transmit the torque required by the assembly and offset the axial component force at the same time, and is suitable for installation and use in occasions where torque and axial force need to be transmitted.

[0031] In the specific working process, through the above-mentioned pin shaft assembly structure, the shaft end limiting structure at both ends of the secondary pin shaft 16 can be used to limit the shaft end of the main pin shaft 15, and can withstand a certain axial force to eliminate the axial force offset during the operation process; by being set in the lubrication structure, it can achieve a good lubrication purpose and avoid the problem of friction and wear of the main pin shaft.

[0032] Furthermore, the shaft end limiting structure includes a pin cover 6 fixed to the outer end surface of the wear-resistant sleeve 12, the pin cover 6 and the wear-resistant sleeve 12 are fixed to the main pin shaft seat 19 by a first bolt 5, the two ends of the secondary pin shaft 16 are processed with threaded sections 2, the threaded sections 2 are installed with a pin thread cover 1 by threaded cooperation, and the pin thread cover 1 and the pin cover 6 are fixedly connected by a second bolt 4. The above-mentioned shaft end limiting structure can be used to axially limit the main pin shaft 15 installed on the secondary pin shaft 16, and enable it to withstand a certain axial force. During operation, the pin thread cover 1 can fix the pin cover 6 to the side wall of the main pin shaft seat 19, and limit the shaft end of the main pin shaft 15.

[0033] Furthermore, the lubrication structure includes a lubrication washer 9, which is arranged between the pin cover 6 of the shaft end limit structure and the outer end surface of the main pin shaft 15, and the lubrication washer 9 is fixed to the inner end surface of the pin cover 6 by the third bolt 3; a lubrication oil channel structure is arranged between the pin cover 6, the lubrication washer 9, the main pin shaft 15 and the wear-resistant sleeve 12. The main pin shaft 15 and the auxiliary pin shaft 16 can be effectively lubricated by the above lubrication structure.

[0034] In the specific working process, the end face contact and fit between the shaft end of the kingpin shaft 15 and the lubricating washer 9 is achieved, and the lubricating oil between the two is used to achieve the purpose of end face lubrication.

[0035] The kingpin shaft 15 can be lubricated by the lubricating oil between the wear-resistant sleeve 12 and the kingpin shaft 15 .

[0036] Furthermore, the lubricating oil channel structure includes a radial oil injection hole 7 processed on the pin cover 6, the bottom end of the radial oil injection hole 7 is connected to the top of the lubricating gasket 9, and the top of the radial oil injection hole 7 is fixedly installed with an oil injection nozzle 8. The end surface of the lubricating gasket 9 matching the main pin shaft 15 is processed with a first annular oil groove 18, and the outer end surface of the main pin shaft 15 is evenly processed with a plurality of storage holes 11. The above-mentioned lubricating oil channel structure can fully lubricate the various relatively moving parts inside the above-mentioned assembly structure.

[0037] Furthermore, the inner cavity of the wear-resistant sleeve 12 is processed with a second annular oil groove 17 arranged in an annular shape, and the outer edge of the end of the kingpin shaft 15 is processed with a chamfered structure 10. The second annular oil groove 17 can be used to contain lubricating oil.

[0038] The chamfered structure 10 facilitates the assembly of parts on the one hand, and facilitates the injection and storage of lubricating oil on the other hand.

[0039] Furthermore, the wear-resistant sleeve 12 is a copper sleeve, which has a good wear-resistant effect.

[0040] Furthermore, the kingpin shaft assembly 14 is limited by a collar 13 provided on the kingpin shaft 15. The above-mentioned limiting structure has high reliability.

[0041] Furthermore, the kingpin shaft assembly 14 and the kingpin shaft 15 are in interference fit and transmit torque. The purpose of transmitting torque is achieved through the above assembly method.

[0042] Embodiment 2:

[0043] The assembly method of the pin assembly structure that is easy to lubricate includes the following steps:

[0044] Step 1: Set the kingpin shaft assembly 14 between the kingpin shaft seats 19;

[0045] Step 2: Pass the kingpin shaft 15 through the kingpin shaft seat 19 on one side, and position and install the kingpin shaft assembly 14 on the kingpin shaft 15 by interference fit;

[0046] Step 3: Install the wear-resistant sleeves 12 at both ends of the kingpin shaft 15, and fix the wear-resistant sleeves 12 inside the kingpin shaft seat 19;

[0047] Step 4: Install the secondary pin shaft 16 inside the main pin shaft 15;

[0048] Step 5: Install the lubrication washer 9, the pin gland 6 and the pin threaded gland 1 on both ends of the secondary pin 16 in sequence, and fix the pin gland 6 on the main pin shaft seat 19 with the first bolt 5;

[0049] Step six: During operation, lubricating grease is injected into the radial oil filling hole 7 through the oil filling nozzle 8. The lubricating grease is injected into the contact end surface between the lubricating washer 9 and the kingpin shaft 15, the contact surface between the wear-resistant sleeve 12 and the kingpin shaft 15, and the contact surface between the kingpin shaft 15 and the secondary pin shaft 16 through the radial oil filling hole 7.

Claims

1. The pin assembly structure is easy to lubricate, characterized by: It comprises a secondary pin shaft (16), a main pin shaft (15) is sleeved on the secondary pin shaft (16), two ends of the main pin shaft (15) are supported on symmetrically arranged main pin shaft seats (19) through wear-resistant sleeves (12), a main pin shaft assembly (14) is installed in the middle of the main pin shaft (15), shaft end limiting structures are symmetrically installed on the secondary pin shaft (16) and at both ends of the main pin shaft (15), and a lubrication structure for lubrication is arranged between the shaft end limiting structure and the main pin shaft (15); The shaft end limiting structure comprises a pin cover (6) fixed to the outer end surface of the wear-resistant sleeve (12); the pin cover (6) and the wear-resistant sleeve (12) are fixed to the main pin shaft seat (19) by a first bolt (5); the two ends of the auxiliary pin shaft (16) are processed with threaded sections (2); the threaded pin cover (1) is installed on the threaded section (2) by threaded matching; the pin cover (1) and the pin cover (6) are fixedly connected by a second bolt (4); The kingpin shaft assembly (14) is limited in position by a shaft ring (13) arranged on the kingpin shaft (15); The kingpin shaft assembly (14) and the kingpin shaft (15) are fitted with an interference fit and transmit torque.

2. The pin assembly structure for easy lubrication according to claim 1, characterized in that: The lubrication structure comprises a lubrication washer (9), the lubrication washer (9) being arranged between a pin shaft cover (6) of the shaft end limiting structure and an outer end surface of a main pin shaft (15), the lubrication washer (9) being fixed to an inner end surface of the pin shaft cover (6) by means of a third bolt (3); and a lubrication oil channel structure is arranged between the pin shaft cover (6), the lubrication washer (9), the main pin shaft (15) and the wear-resistant sleeve (12).

3. The pin assembly structure for easy lubrication according to claim 2 is characterized in that: The lubricating oil channel structure comprises a radial oil injection hole (7) machined on the pin shaft cover (6), the bottom end of the radial oil injection hole (7) is connected to the top of the lubricating gasket (9), and an oil injection nozzle (8) is fixedly installed on the top of the radial oil injection hole (7), the end surface of the lubricating gasket (9) matching the kingpin shaft (15) is machined with a first annular oil groove (18), and the outer end surface of the kingpin shaft (15) is evenly machined with a plurality of storage holes (11).

4. The pin assembly structure for easy lubrication according to claim 1, characterized in that: The inner cavity of the wear-resistant sleeve (12) is processed with a second annular oil groove (17) arranged in an annular shape, and the outer edge of the end of the kingpin shaft (15) is processed with a chamfered structure (10).

5. The pin assembly structure for easy lubrication according to claim 1 is characterized in that: The wear-resistant sleeve (12) is a copper sleeve.

6. The method for assembling the pin assembly structure for easy lubrication according to any one of claims 1 to 5, characterized in that The following steps are involved: Step 1: Arrange the kingpin shaft assembly (14) between the kingpin shaft seats (19); Step 2: Pass the kingpin shaft (15) through the kingpin shaft seat (19) on one side, and position and install the kingpin shaft assembly (14) on the kingpin shaft (15) by interference fit; Step 3: Install the wear-resistant sleeves (12) at both ends of the kingpin shaft (15), and fix the wear-resistant sleeves (12) inside the kingpin shaft seat (19); Step 4: Install the secondary pin (16) inside the main pin (15); Step 5: Install the lubrication gasket (9), the pin gland (6) and the pin thread gland (1) at both ends of the secondary pin shaft (16) in sequence, and fix the pin gland (6) to the main pin shaft seat (19) using the first bolt (5); Step 6: During operation, lubricating grease is injected into the radial oil injection hole (7) through the oil injection nozzle (8). The lubricating grease is injected into the contact end surface between the lubricating washer (9) and the kingpin shaft (15), the contact surface between the wear-resistant sleeve (12) and the kingpin shaft (15), and the contact surface between the kingpin shaft (15) and the secondary pin shaft (16) through the radial oil injection hole (7).

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