Steel plate spring lifting lug pin shaft

Abstract

The utility model discloses a steel plate spring lifting lug pin shaft, which relates to the technical field of lifting lug pin shafts, and comprises a pin shaft body, a fixing sleeve fixed on the outer surface of the right side of the pin shaft body and a limiting plate inserted on the inner wall of the pin shaft body, a mounting component is arranged on the fixing sleeve, and a buffer component is arranged on the fixing sleeve. According to the steel plate spring lifting lug pin shaft, when the pin shaft body is subjected to impact force, the fixing plate can be pushed to move in the fixing sleeve, the fixing plate moves to drive the fixing rod to push the sliding plate to move, and therefore the first damping spring can be extruded to generate elastic force, the first damping spring can be buffered through the elastic force of the first damping spring, and the risks of breakage and damage are reduced; and the inserting rod can be separated from the inserting opening of the pin shaft body by pulling the inserting rod, the limiting plate is detached, meanwhile, the inserting rod moves to drive the fixing ring to extrude the telescopic spring to generate elastic force, the limiting plate can be rapidly installed through the elastic force, and the installing and detaching time is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting eye pin shafts, in particular to a lifting eye pin shaft for a leaf spring. Background Art

[0002] At present, for automobiles using leaf spring suspension, leaf springs and leaf spring fixed end brackets, leaf springs and leaf spring lifting ears, or lifting ears and leaf spring lifting ear end brackets mostly use leaf spring pins to hinge and transmit force and torque. Existing leaf spring pins are generally cylindrical structures. The main function of the leaf spring lifting ears is to allow the steel plate to extend and stretch after loading, so as to have a normal buffering effect.

[0003] The inventor discovered during the process of implementing the utility model:

[0004] A patent document with announcement number CN207291554U discloses a leaf spring ear pin, which has a threaded end at the left end so that it can be fixed with a rotating nut when the pin body is inserted into a specified position. At the same time, the threaded end cooperates with the fixing sleeve to more strongly fix the spring ear. By providing a shock-absorbing ring and a shock-absorbing layer, it can prevent the pin body from being damaged due to excessive force when it is clamped. By polishing the outer side of the pin body, the friction between the pin body and the ear is reduced, thereby increasing the service life of the leaf spring ear pin.

[0005] During the driving process of the vehicle, the leaf spring will be constantly subjected to impact and vibration from the road surface, and these impact forces and vibrations will be directly transmitted to the pin shaft. The above patent solution lacks buffering for the pin shaft. Frequent impact forces and vibrations will cause fatigue of the pin shaft structure, increasing the risk of breakage and damage. In addition, the installation and removal of the pin shaft fixed by a nut requires the use of specific tools, which increases the installation and removal time. Summary of the invention

[0006] In order to solve the problems existing in the prior art, the utility model proposes a leaf spring hanging ear pin shaft, which can buffer the impact on the pin shaft and can also quickly install and disassemble the pin shaft.

[0007] To this end, the technical solution of the utility model is: a steel leaf spring lifting ear pin, including a pin body, a fixing sleeve fixed to the right outer surface of the pin body and a limit plate inserted into the inner wall of the pin body, and a buffer component is provided on the pin body and the fixing sleeve.

[0008] The buffer assembly includes a fixing plate fixed to one end of the pin shaft body located inside the fixing sleeve and a fixing cylinder fixed to the inner wall of the fixing sleeve, a fixing rod is fixed to the side of the fixing plate away from the pin shaft body, and one end of the fixing rod is located in the fixing cylinder, a sliding plate is fixed to one end of the fixing rod located inside the fixing cylinder, and the outer surface of the sliding plate is in sliding contact with the inner wall of the fixing cylinder, a first shock-absorbing spring is arranged inside the fixing cylinder, and the first shock-absorbing spring is located between the sliding plate and the fixing cylinder.

[0009] The mounting assembly includes a U-shaped plate fixed to the left end of the pin shaft body, a plug rod is slidably connected inside the U-shaped plate, a fixing ring is fixed to the outer surface of the plug rod, a telescopic spring is sleeved on the outer surface of the plug rod, and the telescopic spring is located between the fixing ring and the U-shaped plate.

[0010] Furthermore, a pulley is hinged on the inner wall of the fixing cylinder, and the outer surface of the pulley contacts the outer surface of the fixing rod. The pulley is located on the left side of the slide plate, and the pulley can limit the position of the fixing rod to prevent the fixing rod from shaking left and right.

[0011] Furthermore, a limiting block is fixed on the inner wall of the fixing cylinder, and the limiting block is located between the sliding plate and the pulley, so as to avoid collision between the sliding plate and the pulley.

[0012] Furthermore, a telescopic rod is fixed to one side of the fixing plate close to the fixing rod, and an end of the telescopic rod away from the fixing plate is fixed to the inner wall of the fixing sleeve, and a second shock-absorbing spring is sleeved on the outer surface of the telescopic rod. By arranging the telescopic rod and the second shock-absorbing spring, the buffering effect of the first shock-absorbing spring can be increased.

[0013] Furthermore, the pin shaft body and the limit plate are provided with sockets adapted to the insertion rod, and one end of the insertion rod located inside the pin shaft body is plugged into the limit plate through the socket, and a handle is fixed to the end of the insertion rod away from the pin shaft body, which can more conveniently pull the insertion rod.

[0014] Furthermore, an oil passage is opened inside the pin shaft body, and a plurality of oil outlets are opened on the outer surface of the pin shaft body, and each oil outlet is connected to the oil passage. The oil passage is evenly distributed in annular direction in the middle part of the outer surface of the pin shaft body, so that the oil can flow evenly to the outside of the pin shaft body.

[0015] Furthermore, an oil inlet is provided on the outer surface of the pin shaft body, and the oil inlet is connected to the oil channel. The oil inlet is arranged in an inclined shape, and its appearance is large on the outside and small on the inside.

[0016] Beneficial effect: When the pin shaft body of the utility model is subjected to impact force, it will push the fixed plate to move in the fixed sleeve. The movement of the fixed plate will drive the fixed rod to push the slide plate to move, thereby squeezing the first shock-absorbing spring, thereby generating an opposite elastic force. The elastic force can be used to buffer the impact on the pin shaft body and reduce the risk of breakage and damage. The limit plate can be disassembled by pulling the insertion rod to disengage it from the socket of the pin shaft body. At the same time, the movement of the insertion rod will drive the fixed ring to squeeze the telescopic spring, thereby generating a corresponding elastic force. The limit plate can be quickly installed by using its elastic force, reducing the installation and disassembly time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereogram of the utility model.

[0018] Figure 2 It is a cross-sectional view of the pin shaft body and the fixing sleeve of the utility model.

[0019] Figure 3 It is a cross-sectional view of the fixing cylinder of the utility model.

[0020] Figure 4 yes Figure 2 Enlarged view of point A in the middle.

[0021] As shown in the figure: 1. Pin body; 2. Fixed sleeve; 3. Buffer assembly; 301. Fixed plate; 302. Fixed rod; 303. Fixed cylinder; 304. Slide plate; 305. First shock-absorbing spring; 306. Limit block; 307. Pulley; 308. Telescopic rod; 309. Second shock-absorbing spring; 4. Mounting assembly; 401. U-shaped plate; 402. Insert rod; 403. Fixed ring; 404. Telescopic spring; 405. Handle; 5. Oil channel; 6. Oil outlet; 7. Oil inlet; 8. Limit plate. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings, but this embodiment should not be understood as a limitation to the present invention.

[0023] The utility model Figures 1 to 4 As shown:

[0024] A leaf spring hanging pin includes a pin body 1, a fixing sleeve 2 fixed to the right outer surface of the pin body 1, and a limit plate 8 plugged into the inner wall of the pin body 1. The pin body 2 is provided with a mounting assembly 4, and the fixing sleeve 2 is provided with a buffer assembly 3.

[0025] The buffer assembly 3 includes a fixing plate 301 fixed to one end of the pin body 1 located inside the fixing sleeve 2 and a fixing cylinder 303 fixed to the inner wall of the fixing sleeve 2. A fixing rod 302 is fixed to the side of the fixing plate 301 away from the pin body 1, and one end of the fixing rod 302 is located in the fixing cylinder 303. A pulley 307 is hinged to the inner wall of the fixing cylinder 303, and the outer surface of the pulley 307 contacts the outer surface of the fixing rod 302. The pulley 307 is located on the left side of the slide plate 304. The pulley 307 can limit the position of the fixing rod 302 to avoid In order to prevent the fixing rod 302 from shaking left and right, a limit block 306 is fixed on the inner wall of the fixing cylinder 303, and the limit block 306 is located between the slide plate 304 and the pulley 307, so as to avoid collision between the slide plate 304 and the pulley 307. The slide plate 304 is fixed on one end of the fixing rod 302 located inside the fixing cylinder 303, and the outer surface of the slide plate 304 is in sliding contact with the inner wall of the fixing cylinder 303. A first damping spring 305 is arranged inside the fixing cylinder 303, and the first damping spring 305 is located between the slide plate 304 and the fixing cylinder 303.

[0026] When the pin shaft body 1 is subjected to impact force, it will push the fixed plate 301 to move in the fixed sleeve 2. The movement of the fixed plate 301 will drive the fixed rod 302 to push the slide plate 304 to move, thereby squeezing the first shock-absorbing spring 305, thereby generating an opposite elastic force, and utilizing its elastic force to buffer the impact on the pin shaft body 1.

[0027] like Figure 4 As shown, the mounting assembly 4 includes a U-shaped plate 401 fixed to the left end of the pin shaft body 1, a plug rod 402 is slidably connected inside the U-shaped plate 401, a fixing ring 403 is fixed to the outer surface of the plug rod 402, a telescopic spring 404 is sleeved on the outer surface of the plug rod 402, and the telescopic spring 404 is located between the fixing ring 403 and the U-shaped plate 401, a socket adapted to the plug rod 402 is opened on the pin shaft body 1 and the limiting plate 8, and the end of the plug rod 402 located inside the pin shaft body 1 is plugged into the limiting plate 8 through the socket, and a pull handle 405 is fixed to the end of the plug rod 402 away from the pin shaft body 1, which can more conveniently pull the plug rod 402;

[0028] The limit plate 8 is disassembled by pulling the insertion rod 402 to disengage it from the socket of the pin shaft body 1. At the same time, the movement of the insertion rod 402 will drive the fixing ring 403 to squeeze the telescopic spring 404, thereby generating a corresponding elastic force, and the limit plate 8 can be quickly installed by utilizing its elastic force.

[0029] like Figure 2As shown, a telescopic rod 308 is fixed to one side of the fixed plate 301 close to the fixed rod 302, and one end of the telescopic rod 308 away from the fixed plate 301 is fixed to the inner wall of the fixed sleeve 2, and a second shock-absorbing spring 309 is sleeved on the outer surface of the telescopic rod 308. By arranging the telescopic rod 308 and the second shock-absorbing spring 309, the buffering effect of the first shock-absorbing spring 305 can be increased.

[0030] like Figure 2 As shown, an oil passage 5 is provided inside the pin body 1, and a plurality of oil outlets 6 are provided on the outer surface of the pin body 1, and each of the oil outlets 6 is connected to the oil passage 5. The oil passage 5 is evenly distributed in an annular direction in the middle of the outer surface of the pin body 1, so that the oil can flow evenly to the outside of the pin body 1. An oil inlet 7 is provided on the outer surface of the pin body 1, and the oil inlet 7 is connected to the oil passage 5. The oil inlet 7 is arranged in an inclined shape, and its appearance is large outside and small inside.

[0031] The working principle of this utility model:

[0032] When in use, the lubricating oil is injected into the oil passage 5 through the oil inlet 7, and then the pin shaft body 1 is inserted at the place where the connection is required, and then the insertion rod 402 is pulled to disengage it from the insertion hole of the pin shaft body 1, and then the limit plate 8 is inserted into the pin shaft body 1. The movement of the insertion rod 402 will drive the fixing ring 403 to squeeze the telescopic spring 404, thereby generating a corresponding elastic force. The elastic force can be used to fix the limit plate 8 on the pin shaft body 1 through the insertion rod 402 to complete the quick installation. When in use, the pin shaft body 1 will move laterally or rotate with the relative movement between the connecting parts, and the lubricating oil will be discharged through the oil outlet 6 to play a lubricating role. When the lateral movement occurs, the pin shaft body 1 will push the fixing plate 301 to move in the fixing sleeve 2, and the movement of the fixing plate 301 will drive the fixing rod 302 to push the slide plate 304 to move, thereby squeezing the first shock-absorbing spring 305, thereby generating an opposite elastic force. The elastic force can be used to buffer the impact on the pin shaft body 1 and reduce the risk of breakage and damage.

[0033] Parts not described in detail in this specification are well-known technologies in the art.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A leaf spring hanging pin, comprising a pin body (1), a fixing sleeve (2) fixed to the right outer surface of the pin body (1), and a limit plate (8) plugged into the inner wall of the pin body (1), characterized in that: The pin shaft body (1) is provided with a mounting assembly (4), and the fixing sleeve (2) is provided with a buffer assembly (3). The buffer assembly (3) comprises a fixing plate (301) fixed to one end of the pin body (1) located inside the fixing sleeve (2) and a fixing cylinder (303) fixed to the inner wall of the fixing sleeve (2); a fixing rod (302) is fixed to the side of the fixing plate (301) away from the pin body (1), and one end of the fixing rod (302) is located inside the fixing cylinder (303); a sliding plate (304) is fixed to one end of the fixing rod (302) located inside the fixing cylinder (303), and the outer surface of the sliding plate (304) is in sliding contact with the inner wall of the fixing cylinder (303); a first damping spring (305) is arranged inside the fixing cylinder (303), and the first damping spring (305) is located between the sliding plate (304) and the fixing cylinder (303); The mounting assembly (4) comprises a U-shaped plate (401) fixed to the left end of the pin shaft body (1); an insertion rod (402) is slidably connected to the interior of the U-shaped plate (401); a fixing ring (403) is fixed to the outer surface of the insertion rod (402); a telescopic spring (404) is sleeved on the outer surface of the insertion rod (402); and the telescopic spring (404) is located between the fixing ring (403) and the U-shaped plate (401).

2. The leaf spring hanging eye pin according to claim 1, characterized in that: A pulley (307) is hingedly connected to the inner wall of the fixed cylinder (303), and the outer surface of the pulley (307) is in contact with the outer surface of the fixed rod (302). The pulley (307) is located on the left side of the slide plate (304).

3. The leaf spring hanging eye pin according to claim 2, characterized in that: A limit block (306) is fixed on the inner wall of the fixed cylinder (303), and the limit block (306) is located between the slide plate (304) and the pulley (307).

4. A leaf spring hanging pin according to claim 1, 2 or 3, characterized in that: A telescopic rod (308) is fixed to one side of the fixing plate (301) close to the fixing rod (302), and one end of the telescopic rod (308) away from the fixing plate (301) is fixed to the inner wall of the fixing sleeve (2), and a second shock absorbing spring (309) is sleeved on the outer surface of the telescopic rod (308).

5. The leaf spring hanging eye pin according to claim 4, characterized in that: The pin shaft body (1) and the limit plate (8) are provided with a socket adapted to the insertion rod (402), and one end of the insertion rod (402) located inside the pin shaft body (1) is plugged into the limit plate (8) through the socket, and a handle (405) is fixed to the end of the insertion rod (402) away from the pin shaft body (1).

6. A leaf spring hanging pin according to claim 1 or 2 or 3 or 5, characterized in that: An oil passage (5) is provided inside the pin shaft body (1), and a plurality of oil outlets (6) are provided on the outer surface of the pin shaft body (1), and each oil outlet (6) is connected to the oil passage (5).

7. The leaf spring hanging eye pin according to claim 6, characterized in that: An oil inlet (7) is provided on the outer surface of the pin shaft body (1), and the oil inlet (7) is connected to the oil passage (5).

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