Adjustable oil storage lubricating pin shaft device with limiting function and method

Abstract

The invention discloses an adjustable oil storage lubricating pin shaft device with a limiting function and a method. One end of a pin shaft is connected with an oil inlet device, the other end of the pin shaft is connected with a pre-tightening bolt, and an oil storage cavity and an oil channel are formed in the pin shaft; one end of the oil storage cavity is communicated with the oil inlet device, and the other end is communicated with the oil duct; an oil guide groove is formed in the pin shaft, and a plurality of oil outlet holes are uniformly formed in the oil guide groove at intervals; one or more mounting brackets are sleeved on the pin shaft, a fixed seat gasket is arranged on the inner side of each mounting bracket, and the fixed seat gaskets are sleeved on the pin shaft; the pin shaft has oil storage and lubrication functions, after the installation support is fixed to a frame, the pin shaft is limited through the installation support, the pin shaft is prevented from rotating, the pre-tightening bolt is screwed or unscrewed so as to adjust the pressure between the swing part and the fixed seat gasket, and the swing part is prevented from rotating. The swing flexibility of the swing part is adjusted through the pre-tightening bolt, and abnormal sound caused by left-right movement of the swing part can be prevented or reduced through the fixed seat gasket.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile accessory connection, in particular to an adjustable oil storage and lubrication pin shaft device with limiting function and method. BACKGROUND

[0002] The pin shaft is a kind of fastener that can be statically rigidly connected and can also be relatively moved with the connected part. The connected part can be a swing part or a swing arm. The swing part or swing arm is sleeved on the pin shaft at one end and is hinged with the pin shaft. The swing part or swing arm can rotate around the pin shaft.

[0003] At present, the pin shaft does not have the oil storage function in the pin shaft that needs oil lubrication, and the oil needs to be added repeatedly. The pin shaft is difficult to limit in x, y and z directions, and the pin shaft rotates with the swing part as the swing part swings. After the pin shaft and the swing part are installed, it is difficult to adjust the flexibility of the swing part. After the swing part hinged with the pin shaft is worn, the swing part will move left and right, causing abnormal noise. SUMMARY

[0004] The present application aims to provide an adjustable oil storage and lubrication pin shaft device with limiting function and method to solve the problems of the pin shaft without oil storage function and the pin shaft limiting, and to solve the problems of the difficulty in adjusting the flexibility of the swing part after the pin shaft and the swing part are installed and the abnormal noise caused by the left and right movement of the swing part.

[0005] To solve the above problems, the technical scheme of the present application is as follows: An adjustable oil storage and lubrication pin shaft device with limiting function, comprising a pin shaft, one end of the pin shaft being connected with an oil inlet device, the other end being connected with a pre-tightening bolt, an oil storage cavity and an oil channel being arranged inside the pin shaft; one end of the oil storage cavity being communicated with the oil inlet device, the other end being communicated with the oil channel; an oil guide groove being arranged on the pin shaft, a plurality of oil outlet holes being uniformly and interval arranged on the oil guide groove; one or more mounting brackets being sleeved on the pin shaft, a fixed seat washer being arranged on the inner side of each mounting bracket, the fixed seat washer being sleeved on the pin shaft.

[0006] Further, the oil inlet device is a grease nipple, the grease nipple is communicated with one end of the oil storage cavity, lubricating oil is injected into the oil storage cavity through the grease nipple, and the oil channel is a cross oil channel, the cross oil channel is communicated with the other end of the oil storage cavity.

[0007] Further, the oil guide groove is a groove arranged on the pin shaft, the oil guide groove is arranged circumferentially along the pin shaft, and four oil outlet holes are uniformly and interval arranged on the oil guide groove.

[0008] Further, two recessed grooves are arranged on the outer surface of each end of the pin shaft, and the two recessed grooves on each end are symmetrically arranged upward and downward.

[0009] Further, the mounting bracket is in a rectangular shape as a whole, a through-hole in a cylindrical shape is arranged on each mounting bracket and penetrates the top surface to the bottom surface of the mounting bracket, the circular area of the top surface or the bottom surface of the through-hole is smaller than the area of the top surface or the bottom surface of the mounting bracket, a bolt mounting hole is arranged on the side surface of the mounting bracket and penetrates from the side surface of one side of the mounting bracket to the side surface of the other side of the mounting bracket, and the bolt mounting hole is located above or below the through-hole.

[0010] Further, the mounting bracket is located at the two ends of the pin shaft, the pin shaft penetrates through one through-hole at each end, two protrusions are arranged on the inner wall of the through-hole and are symmetrically arranged on the inner wall of the through-hole in an up-down manner, one protrusion on the inner wall of the through-hole is located in a limiting groove, and the protrusion and the limiting groove limit the pin shaft after the mounting bracket is bolted on the frame.

[0011] Further, a fixed check ring is arranged on the outer side of one of the mounting brackets, a through hole is arranged on the fixed check ring, a circular hole is arranged on the bottom surface of the pin shaft facing the pre-tightening bolt, and the top end of the pre-tightening bolt penetrates through the through hole on the fixed check ring and the circular hole on the bottom surface of the pin shaft in sequence and extends into the pin shaft to be threadedly connected with the pin shaft.

[0012] A method for realizing self-lubrication of a pin shaft by using the adjustable oil storage and lubrication pin shaft device with a limiting function, comprising: After the lubricating oil is injected into the oil storage cavity through the butter dish, the oil storage cavity is filled with the lubricating oil, the lubricating oil flows from the oil storage cavity into the cross-shaped oil channel, the lubricating oil flows out of the cross-shaped oil channel and then flows to the oil guide groove, and then flows out of the oil outlet hole on the oil guide groove, the oil is uniformly distributed to the working area of the pin shaft through the swinging and rotational friction of the swinging part hinged with the pin shaft, and the pin shaft and the swinging part are lubricated.

[0013] A method for realizing limiting of a pin shaft by using the adjustable oil storage and lubrication pin shaft device with a limiting function, comprising: The mounting bracket is fixedly connected to the frame by using a fixed bolt, the top end of the fixed bolt penetrates through the bolt mounting hole, and the top end of the fixed bolt is fixed to the frame, the protrusion on the inner wall of the through-hole cooperates with the limiting groove, the mounting bracket generates a clamping force on the pin shaft when the mounting bracket is firmly mounted on the frame by the fixed bolt, the pin shaft is limited, and the pin shaft is prevented from rotating when the swinging part hinged with the pin shaft swings.

[0014] A method for realizing flexibility adjustment of swinging of a swinging part by using the adjustable oil storage and lubrication pin shaft device with a limiting function, comprising: The pin shaft is connected with the grease nipple at one end, and connected with the pre-tightening bolt at the other end, the swing part is hinged with the pin shaft, one end of the swing part is located between the two fixed seat washers, according to the swing flexibility requirement of the swing part, the pre-tightening bolt is tightened or loosened to adjust the pressure between the swing part and the fixed seat washer, and then the swing flexibility of the swing part is adjusted by using the pre-tightening bolt.

[0015] The present application has the following advantages: 1. The pin shaft has oil storage and lubrication functions, the pin shaft is internally provided with an oil storage cavity and a cross oil channel, the oil storage cavity realizes oil storage, the frequency of adding lubricating oil can be reduced, the cross oil channel is beneficial to the flow and uniform distribution of oil in multiple directions, the friction between the pin shaft and the swing part connected with the pin shaft is reduced through the flow of oil, and the flexibility of the swing part is increased.

[0016] 2. The pin shaft is assembled into an integral whole with the mounting bracket, when the mounting bracket is fixed on the frame, the pin shaft is limited by the mounting bracket to prevent rotation.

[0017] 3. In the present application, one end of the pin shaft is connected with the grease nipple, the other end is connected with the pre-tightening bolt, the swing part is hinged with the pin shaft, one end of the swing part is located between the two fixed seat washers, according to the swing flexibility requirement of the swing part, the pre-tightening bolt can be tightened or loosened to adjust the pressure between the swing part and the fixed seat washer, and then the swing flexibility of the swing part is adjusted by using the pre-tightening bolt.

[0018] 4. The pin shaft is assembled into an integral whole with the fixed seat washer, one end of the swing part is located between the two fixed seat washers, the swing part wear is prevented or reduced by the fixed seat washer, the swing part abnormal sound caused by left and right movement is prevented or reduced by the fixed seat washer, the post-maintenance cost is greatly reduced, the structure is simple, the disassembly and assembly are convenient, and the use scene can cover most working conditions.

[0019] 5. In the present application, one end of the pin shaft is connected with the grease nipple, the other end is connected with the pre-tightening bolt, the pin shaft is tightened by further tightening the pre-tightening bolt, the swing part connected with the pin shaft after wear is limited, and the left and right movement of the swing part is prevented to emit abnormal sound. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural diagram of the embodiment of the present application.

[0021] Figure 2 It is an explosion diagram of the present application.

[0022] Figure 3 It is a whole cut structure diagram of the present application.

[0023] Wherein: butter nozzle 1; pin shaft 2; mounting bracket 3; fixed seat washer 4; fixed seat check ring 5; pre-tightening bolt 6; oil guide groove 201, limiting groove 202; round hole 203; cross oil channel 204; oil storage cavity 205; oil outlet hole 206; via hole 301; bolt mounting hole 302. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and not to limit the present application.

[0025] As shown in Figure 1 and Figure 2 , the adjustable limiting oil storage lubricating pin shaft device of the present application comprises a butter nozzle 1, a pin shaft 2, a mounting bracket 3, a fixed seat washer 4, a fixed seat check ring 5, and a pre-tightening bolt 6.

[0026] As shown in Figure 3 , the pin shaft 2 is in the shape of a cylinder as a whole, and a cavity is provided inside the pin shaft 2, which is an oil storage cavity 205. One end of the pin shaft 2 is in communication with the butter nozzle 1, specifically, one end of the oil storage cavity 205 is in communication with the butter nozzle 1. A thread is provided on the inner wall of the end of the oil storage cavity 205 facing the butter nozzle 1, and the bottom of the butter nozzle extends into the inside of the oil storage cavity 205 and is threadedly connected with the oil storage cavity 205.

[0027] The butter nozzle 1 adopts a standard butter nozzle, and a spring-loaded steel ball or valve core is provided at the top of the butter nozzle, which is in a closed state at ordinary times to prevent contaminants from entering. When the joint of the butter gun, i.e. the oil injection gun, is pressed, the internal valve core is pushed open, and the lubricating grease can be injected. Usually, lubricating oil is injected into the butter nozzle 1 during maintenance, and the lubricating oil is injected into the butter nozzle 1, and the lubricating oil flows into the oil storage cavity 205 included in the pin shaft 2 along the butter nozzle 1.

[0028] An oil channel is designed inside the pin shaft 2, which is a cross oil channel 204. The "cross" shaped oil channel structure ensures that the lubricating oil can be efficiently and uniformly distributed to the key friction parts of the shaft to reduce wear and improve lubrication effect. The cross oil channel 204 is in the shape of a cross, which ensures that the lubricating oil can be transported in multiple directions at the same time.

[0029] The lubricating oil flows from the cross oil channel 204 to the oil guide groove 201, which is a groove provided on the pin shaft 2. The oil guide groove 201 is circumferentially arranged along the pin shaft 2, and a plurality of oil outlet holes 206 are uniformly and intermittently arranged on the oil guide groove 201. In one specific example, four oil outlet holes 206 are uniformly and intermittently arranged on the oil guide groove 201.

[0030] The oil storage cavity 205 is in communication with the grease nipple 1 at one end and in communication with the cross oil channel 204 at the other end. The lubricating oil flows from the grease nipple 1, into the oil storage cavity 205, and then from the oil storage cavity 205 into the cross oil channel 204, and then from the cross oil channel 204 to the oil guide groove 201, and finally from the oil outlet hole 206 on the oil guide groove 201.

[0031] The outer surface of the pin shaft 2 is provided with a U-shaped limiting groove 202 at both ends, and the outer surface of the pin shaft 2 is provided with two limiting grooves 202 at each end. The two limiting grooves 202 at each end are symmetrically arranged on the upper and lower sides. The limiting groove 202 is a U-shaped groove provided on the outer surface of the pin shaft 2.

[0032] The mounting bracket 3 is in the shape of a rectangle as a whole. In a specific embodiment, two mounting brackets 3 are used, and a cylindrical through hole 301 is provided on each mounting bracket 3 from the top surface to the bottom surface of the mounting bracket 3. The circular area of the top surface or the bottom surface of the through hole 301 is smaller than the area of the top surface or the bottom surface of the mounting bracket 3.

[0033] A bolt mounting hole 302 is provided on the side surface of the mounting bracket 3, and the bolt mounting hole 302 penetrates from one side surface of the mounting bracket 3 to the opposite side surface of the mounting bracket 3. In a specific embodiment, two bolt mounting holes 302 are provided on the mounting bracket 3, and the two bolt mounting holes 302 are symmetrically arranged on the side surface of the mounting bracket 3. The width of the bolt mounting hole 302 is 1mm. The circular area of the top surface or the bottom surface of the through hole 301 is smaller than the area of the top surface or the bottom surface of the mounting bracket 3. The bolt mounting hole 302 is located above or below the through hole 301, so that the bolt mounting hole 302 avoids the area where the through hole 301 is located.

[0034] The top of the fixing bolt penetrates into the bolt mounting hole 302 from one side surface of the mounting bracket 3, and then protrudes from the opposite side surface of the mounting bracket 3. The top end of the fixing bolt protruding from the mounting hole 302 is threadedly connected with the frame, so as to fixedly connect the pin shaft 2 with the frame. When the fixing bolt penetrates through the bolt mounting hole 302, a pressing force is generated, which further clamps the pin shaft 2 and prevents the pin shaft 2 from rotating.

[0035] The mounting bracket 3 is located at both ends of the pin shaft 2, and the pin shaft 2 penetrates through one through hole 301 at each end. Two protrusions are provided on the inner wall of the through hole 301, and the two protrusions are symmetrically arranged on the inner wall of the through hole 301. The shape of each protrusion is matched with the shape of one limiting groove 202. The size of the limiting groove 202 is slightly larger than the size of the protrusion. The limiting groove 202 is a groove. One protrusion on the inner wall of the through hole 301 is located in one limiting groove 202. After the mounting bracket 3 is firmly mounted on the frame by the fixing bolt, the pin shaft 2 is limited by the protrusion and the limiting groove 202, so as to limit the movement of the pin shaft 2 in the X, Y and Z directions as much as possible.

[0036] A fixed seat washer 4 is arranged on the inner side of each mounting bracket 3, and the fixed seat washer 4 is sleeved on the pin shaft 2.

[0037] In the present application, the fixed seat washer 4 can be made of rubber or other materials, and the fixed seat washer 4 is installed on both sides of the swing part. The hardness of the fixed seat washer 4 is slightly lower than that of the swing part. The fixed seat washer 4 can prevent or reduce the wear of the swing part, thereby prolonging the service life of the part.

[0038] In actual engineering applications, one end of the swing part is connected to the pin shaft 2. In the present application, the swing part is a swing arm. One end of the swing part can be sleeved on the pin shaft 2 to achieve the hinged connection of one end of the swing part to the pin shaft 2. The connection part of the swing part and the pin shaft 2 is located between the two fixed seat washers 4. The swing part rotates around the pin shaft 2.

[0039] In the present application, a through hole 301 is arranged on the mounting bracket 3. A protrusion on the inner wall of the through hole 301 is located in a recess-shaped limiting groove 202. The top end of the fixed bolt passes through the bolt mounting hole 302, and the top end of the fixed bolt is fixed on the vehicle frame. The pin shaft 2 is limited by the fixed bolt. The protrusion on the inner wall of the through hole 301 cooperates with the recess-shaped limiting groove 202. When the mounting bracket 3 is firmly installed on the vehicle frame by the fixed bolt, the mounting bracket 3 generates a clamping force on the pin shaft while the fixed bolt is tightened, further limiting the pin shaft, and preventing the swing part connected to the pin shaft from rotating when the swing part swings.

[0040] One end of the pin shaft 2 is connected to one end of the grease nipple 1, and the other end of the pin shaft 2 is connected to the pre-tightening bolt 6. The fixed retainer ring 5 is located on the outer side of one of the mounting brackets 3, and the fixed retainer ring 5 is tightly attached to the outer surface of the mounting bracket 3. The fixed retainer ring 5 is located between the pre-tightening bolt 6 and one of the mounting brackets 3. The inner wall of the connection end of the pin shaft 2 and the pre-tightening bolt 6 is provided with threads. The fixed retainer ring 5 is provided with a through hole. The bottom surface of the pin shaft 2 facing the pre-tightening bolt 6 is provided with a circular hole 203. The top end of the pre-tightening bolt 6 passes through the through hole of the fixed retainer ring 5 and the circular hole 203 on the bottom surface of the pin shaft 2 in sequence and extends into the pin shaft 2 to be connected with the pin shaft 2 by threads.

[0041] One end of the swing part is located between the two fixed seat washers 4. After long-term use, the swing part will wear out, causing the swing part to move left and right and produce abnormal noise. At this time, the pre-tightening bolt 6 is tightened, so that the pre-tightening bolt 6, the fixed retainer ring 5, the mounting bracket 3, the fixed seat washer 4, and the swing part are pressed tightly, thereby limiting the swing part. This can reduce the left and right movement of the swing part and the abnormal noise caused by the movement of the part.

[0042] The pre-tightening bolt 6 cooperates with the fixed seat retainer ring 4. After the pin shaft 2 is installed and fixed, according to the swing flexibility requirement of the swing part, the pre-tightening bolt 6 can be tightened or loosened, and the pre-tightening bolt 6 is used to adjust the flexibility of the swing part.

[0043] The one end of the swing part is located between the two fixed seat washers 4, the distance between the two fixed seat washers 4 can be adjusted by tightening or loosening the pre-tightening bolt 6, and then the installation length of the swing part can be adjusted, the pre-tightening bolt 6 can be further tightened after the pin shaft 2 is fixed, the pin shaft 2 is tightened, the fixation is strengthened, the swing part after wear can be limited, and the swing part is prevented from moving and making abnormal sound.

[0044] The application also discloses a pin shaft self-lubricating method: lubricating oil is injected into the oil storage cavity 205 through the grease nipple 1, after the oil storage cavity 205 is filled with lubricating oil, the lubricating oil flows into the cross oil channel 204 from the oil storage cavity 205, the lubricating oil flows out of the cross oil channel 204 and then flows to the oil guide groove 201, and then flows out of the oil outlet hole 206 on the oil guide groove 201, through the swing of the swing part connected with the pin shaft 2 and the rotary friction of the swing part, the oil is uniformly distributed to the working area of the pin shaft, and the pin shaft and the swing part are lubricated.

[0045] The application also discloses a pin shaft limiting method: the mounting bracket 3 is fixedly connected to the vehicle frame by using a fixing bolt, the top end of the fixing bolt is fixed to the vehicle frame after penetrating through the bolt mounting hole 302, the pin shaft 2 is limited by the fixing bolt, the protrusions on the inner wall of the through hole 301 cooperate with the recessed limiting groove 202, when the mounting bracket 3 is firmly mounted on the vehicle frame by the fixing bolt, the mounting bracket 3 generates clamping force on the pin shaft 2 while the fixing bolt is tightened, the pin shaft 2 is further limited, and the swing of the swing part hinged to the pin shaft is prevented from causing the pin shaft to rotate.

[0046] The application also discloses a swing part connected with the pin shaft and a swing flexibility adjusting method: one end of the pin shaft 2 is connected with the grease nipple 1, the other end of the pin shaft 2 is connected with the pre-tightening bolt 6, the swing part is hinged to the pin shaft 2, and one end of the swing part is located between the two fixed seat washers 4; according to the swing flexibility requirement of the swing part, the pre-tightening bolt 6 can be tightened or loosened to adjust the pressure between the swing part and the fixed seat washer 4, and then the swing flexibility of the swing part is adjusted by using the pre-tightening bolt 6.

[0047] In the description of the present application, it should be understood that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

Claims

1. An adjustable oil-lubricating pin device with limiting function, comprising a pin (2), characterized in that: One end of the pin (2) is connected to the oil inlet device, and the other end is connected to the pre-tightening bolt (6). The pin (2) is provided with an oil storage chamber (205) and an oil passage. One end of the oil storage chamber (205) is connected to the oil inlet device, and the other end is connected to the oil passage. An oil guide groove (201) is provided on the pin (2), and multiple oil outlet holes (206) are evenly spaced on the oil guide groove (201). One or more mounting brackets (3) are fitted on the pin (2), and the mounting brackets (3) are used to connect to the vehicle frame. A fixing seat washer (4) is provided on the inner side of each mounting bracket (3), and the fixing seat washer (4) is fitted on the pin (2).

2. The adjustable oil-lubricating pin device with limiting function according to claim 1, characterized in that: The oil inlet device is a grease nipple (1), which is connected to one end of the oil storage chamber (205). Lubricating oil is injected into the oil storage chamber (205) through the grease nipple (1). The oil passage is a cross-shaped oil passage (204), which is connected to the other end of the oil storage chamber (205).

3. The adjustable oil-lubricating pin device with limiting function according to claim 1, characterized in that: The oil guide groove (201) is a groove set on the pin (2). The oil guide groove (201) is set along the circumference of the pin (2), and four oil outlet holes (206) are evenly spaced on the oil guide groove (201).

4. The adjustable oil-lubricating pin device with limiting function according to claim 1, characterized in that: The outer surface of the pin (2) is provided with two groove-shaped limiting grooves (202) at each end, and the two limiting grooves (202) at each end are symmetrically arranged vertically.

5. The adjustable oil-lubricating pin device with limiting function according to claim 1, characterized in that: The mounting bracket (3) is rectangular in shape. Each mounting bracket (3) is provided with a cylindrical through hole (301) that runs from the top surface to the bottom surface of the mounting bracket (3). The mounting bracket (3) is provided with a bolt mounting hole (302) on its side. The bolt mounting hole (302) runs from one side of the mounting bracket (3) to the opposite side of the mounting bracket (3). The bolt mounting hole (302) is located above or below the through hole (301).

6. The adjustable oil-lubricating pin device with limiting function according to claim 1, characterized in that: The mounting bracket (3) is located at both ends of the pin (2). The two ends of the pin (2) pass through a through hole (301) respectively. Two protrusions are provided on the inner wall of the through hole (301). The two protrusions are arranged symmetrically on the inner wall of the through hole (301). One of the protrusions on the inner wall of the through hole (301) is located in a limiting groove (202). When the mounting bracket (3) is bolted on the frame, the protrusion and the limiting groove (202) limit the pin (2).

7. The adjustable oil-lubricating pin device with limiting function according to claim 1, characterized in that: A retaining ring (5) is provided on the outer side of one of the mounting brackets (3). A through hole is provided on the retaining ring (5). A round hole (203) is provided on the bottom surface of the pin (2) facing the pre-tightening bolt (6). The top of the pre-tightening bolt (6) passes through the through hole on the retaining ring (5) and the round hole (203) on the bottom surface of the pin (2) in sequence and extends into the pin (2) to be threadedly connected to the pin (2).

8. A method for achieving self-lubrication of a pin using an adjustable oil-lubricating pin device with a limiting function as described in any one of claims 1-7, characterized in that, The method includes: Lubricating oil is injected into the oil reservoir (205) through the grease fitting (1). After the oil reservoir (205) is filled with lubricating oil, the lubricating oil flows from the oil reservoir (205) into the cross oil passage (204). After the lubricating oil flows out from the cross oil passage (204), it flows into the guide oil groove (201) and then flows out from the oil outlet (206) on the guide oil groove (201). Through the swinging of the swinging part that is hinged to the pin (2) and the rotational friction of the swinging part, the oil is evenly distributed to the working area of ​​the pin and lubricates the pin and the swinging part.

9. A method for limiting a pin shaft using the adjustable oil-lubricating pin shaft device with limiting function as described in any one of claims 1-7, characterized in that, The method includes: The mounting bracket (3) is fixedly connected to the frame using a fixing bolt. After the top of the fixing bolt passes through the bolt mounting hole (302), the top of the fixing bolt is fixed to the frame. The protrusion on the inner wall of the through hole (301) cooperates with the groove-shaped limiting groove (202). When the mounting bracket (3) is firmly installed on the frame by the fixing bolt, the mounting bracket (3) generates a clamping force on the pin (2) while the fixing bolt is tightened, limiting the pin (2) and preventing the pin from rotating when the swinging part that is hinged to the pin swings.

10. A method for adjusting the oscillation flexibility of an oscillating part using the adjustable oil-lubricating pin device with limiting function as described in any one of claims 1-7, characterized in that, The method includes: One end of the pin (2) is connected to the grease nipple (1), and the other end of the pin (2) is connected to the preload bolt (6). The swinging part is hinged to the pin (2). One end of the swinging part is located between the two fixed seat washers (4). According to the swinging flexibility requirements of the swinging part, the preload bolt (6) is tightened or loosened to adjust the pressure between the swinging part and the fixed seat washers (4), and then the preload bolt (6) is used to adjust the swinging flexibility of the swinging part.

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