Automobile cab oil cylinder self-locking mechanism

Abstract

The utility model belongs to the technical field of automobile parts, and particularly relates to an automobile cab oil cylinder self-locking mechanism which comprises a rotating shaft, an oil cylinder body and a connecting lug, the end of the oil cylinder body is fixedly connected with the connecting lug, the connecting lug is arranged on the surface of the rotating shaft in a sleeved mode, and the self-locking mechanism is arranged in the connecting lug. The self-locking mechanism comprises teeth, an inner ring, notches, positioning teeth and compression springs, the teeth are fixedly connected to the inner wall of the connecting lug, the teeth are distributed on the inner wall of the connecting lug at equal intervals, the inner ring is arranged in the connecting lug and connected with the rotating shaft, and the notches are formed in the two sides of the inner ring. The utility model provides a self-locking mechanism for an oil cylinder of an automobile cab, which can be used for self-locking an oil cylinder connecting point of an operation support, improving the stable support performance of the oil cylinder, preventing the connecting part of the oil cylinder from slipping or turning over accidentally, and ensuring the safety of maintenance personnel during working.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts, and in particular relates to a self-locking mechanism of an oil cylinder in an automobile cab. Background Art

[0002] Auto parts are the components that make up a car and ensure its proper operation and safety. The cab tilt cylinder is a crucial component in a car, primarily used to enable the cab to flip for easier maintenance and inspection of the engine compartment or interior.

[0003] The lifting force provided by the cylinder during the flipping process ensures the safe support of the cab in the flipped state. However, the angle of support for the cab flipping by some cylinders is too large, which can easily cause the center of gravity to shift and make it impossible to stably support the cab. This not only increases the risk of the cylinder slipping on the connected shaft surface, causing accidental falling, but also increases the risk of injury to maintenance personnel. Utility Model Content

[0004] The purpose of the utility model is to provide a self-locking mechanism for the oil cylinder in the automobile cab, which can self-lock the connection point of the oil cylinder of the running support, improve the stable support of the oil cylinder, prevent the oil cylinder connection from accidentally slipping or flipping, and ensure the safety of maintenance personnel during work.

[0005] The technical solutions adopted by this utility model are as follows:

[0006] It includes a rotating shaft, a cylinder body and a connecting ear, the end of the cylinder body is fixedly connected to the connecting ear, the connecting ear is sleeved on the surface of the rotating shaft, and a self-locking mechanism is provided inside the connecting ear; the self-locking mechanism includes teeth, an inner ring, a notch, positioning teeth and a compression spring, the teeth are fixedly connected to the inner wall of the connecting ear, there are several teeth, and they are equidistantly distributed on the inner wall of the connecting ear, the inner ring is arranged inside the connecting ear, the inner ring is connected to the rotating shaft, the notch is opened on both sides of the inner ring, one end of the positioning tooth is connected to the inside of the notch by a hinge, and the other end of the positioning tooth is matched with the tooth, one end of the compression spring is fixedly connected to the inner wall of the notch, and the other end of the compression spring is fixedly connected to the inner side of the positioning tooth.

[0007] Preferably, a long rod is fixedly connected to the front side of the positioning tooth, and a groove is provided on the front side of the inner ring, and the groove is used in conjunction with the long rod.

[0008] Preferably, the top of the front side of the connecting ear is fixedly connected to a micro electric cylinder, and the output end of the bottom of the electric cylinder is fixedly connected to a clamping ring, and the inner side of the clamping ring is in contact with the long rod.

[0009] Preferably, the inner side of the clamping ring is set as a bevel, and the bevel of the clamping ring is adapted to the long rod.

[0010] Preferably, a baffle is fixedly connected to the front side of the connecting ear, and the baffles are respectively located on both sides of the clamping ring and are in close contact with the outer side of the clamping ring.

[0011] Preferably, there are several compression springs, which are evenly distributed inside the slot.

[0012] The technical effects achieved by this utility model are:

[0013] The utility model cooperates with each other through the self-locking mechanism. When the cylinder body is in operation to support the cab, the cylinder body will drive the connecting ear to rotate slowly clockwise. The clockwise rotation of the connecting ear will drive the teeth to rotate. The rotation of the teeth will squeeze the positioning teeth to move toward the inside of the slot and squeeze the compression spring through the positioning teeth. After the cab is fully supported, the cylinder body will drive the connecting ear to rotate a certain angle on the surface of the inner ring. Then, under the rebound force of the compression spring, the positioning teeth can be pushed outward at the same time, and the positioning teeth can resist the teeth, so as to prevent the cylinder body and the connecting ear from reversing and slipping, thereby making the connection of the cylinder body self-locking and improving the stable support of the cylinder body.

[0014] When the oil cylinder body is retracted, the staff can first operate the electric cylinder so that the output end of the electric cylinder pushes the clamping ring downward. The downward movement of the clamping ring will squeeze the long rod and move inward along the inclined direction of the inner side of the clamping ring. The inward movement of the long rod will drive the positioning teeth and the compression spring to retract toward the inside of the slot, and disengage the positioning teeth from the teeth. Finally, the oil cylinder body can be retracted smoothly, avoiding the situation that the oil cylinder body cannot be retracted smoothly and autonomously under the action of the self-locking mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a disassembled three-dimensional schematic diagram of the self-locking mechanism of the utility model;

[0017] Figure 3 This is a front view of the connecting ear of the utility model;

[0018] Figure 4 It is a three-dimensional schematic diagram of the inner ring structure of the utility model.

[0019] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0020] 101. Rotating shaft; 102. Cylinder body; 103. Connecting ear; 201. Tooth; 202. Inner ring; 203. Notch; 204. Positioning tooth; 205. Compression spring; 301. Long rod; 302. Groove; 303. Electric cylinder; 304. Snap ring; 4. Baffle. DETAILED DESCRIPTION

[0021] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.

[0022] like Figure 1-4 As shown, a self-locking mechanism of a car cab oil cylinder includes a rotating shaft 101, an oil cylinder body 102 and a connecting ear 103. The end of the oil cylinder body 102 is fixedly connected to the connecting ear 103, and the connecting ear 103 is sleeved on the surface of the rotating shaft 101. A self-locking mechanism is provided inside the connecting ear 103; the self-locking mechanism includes teeth 201, an inner ring 202, a notch 203, a positioning tooth 204 and a compression spring 205. The teeth 201 are fixedly connected to the inner wall of the connecting ear 103. There are several teeth 201, which are evenly distributed on the inner wall of the connecting ear 103. The inner ring 202 is provided inside the connecting ear 103, the inner ring 202 is connected to the rotating shaft 101, and the notch 203 is opened. It is arranged on both sides of the inner ring 202, one end of the positioning tooth 204 is connected to the inside of the slot 203 through a hinge, and the other end of the positioning tooth 204 is cooperated with the tooth 201, and one end of the compression spring 205 is fixedly connected to the inner wall of the slot 203, and the other end of the compression spring 205 is fixedly connected to the inner side of the positioning tooth 204. Through the mutual cooperation of the self-locking mechanism, the connection between the cylinder body 102 and the rotating shaft 101 can be self-locked to prevent the cylinder body 102 from slipping and falling due to excessive tilt angle or load force when it is running and supporting the cab, thereby improving the stable support of the cylinder body 102 and ensuring the safety and stability of the cab during maintenance.

[0023] like Figure 4 As shown, the front side of the positioning tooth 204 is fixedly connected to the long rod 301, and the front side of the inner ring 202 is provided with a groove 302. The groove 302 is used in conjunction with the long rod 301. When the positioning tooth 204 is squeezed by the long rod 301 and moved inward at the same time, the long rod 301 will move to the inside of the groove 302 to avoid the long rod 301 colliding with the inner ring 202 and being unable to retract the positioning tooth 204.

[0024] like Figure 1-2When the cam 304 is in the closed position, the cam 304 is in the closed position, and the cam 304 is in the closed position, so that the cam 304 is in the open position, and the cam 304 is in the open position, so that the cam 304 is in the open position, and the cam 304 is in the open position, so that the cam 304 is in the open position, and the cam 304 is in the open position, so that the cam 304 is in the open position, and the cam 304 is in the open position, so that the cam 304 is in the open position, and the cam 304 is in the open position, so that the cam 304 is in the open position, and the cam 304 is in the open position, so that the cam 304 is in the open position, and the cam 304 is in the open position, so that the cam 304 is in the open position,

[0025] like Figure 1-3 As shown, the front side of the connecting ear 103 is fixedly connected with a baffle 4, which is respectively located on both sides of the snap ring 304 and in close contact with the outer side of the snap ring 304. When the snap ring 304 is pushed to move downward, the snap ring 304 can be assisted by the baffle 4 to move vertically downward along the baffle 4, thereby preventing the snap ring 304 from being offset or tilted when moving downward.

[0026] like Figure 4 As shown, there are several compression springs 205, which are evenly distributed inside the slot 203. Under the action of multiple compression springs 205, the positioning teeth 204 can be evenly pushed to adapt to the teeth 201, thereby improving the stability of the self-locking mechanism. In addition, multiple compression springs 205 share the load, which can reduce the stress of each compression spring 205, thereby extending the service life of the entire system.

[0027] The working principle of the present utility model is as follows: when the cylinder body 102 is operating to support the cab, the cylinder body 102 will drive the connecting ear 103 to rotate slowly clockwise, and the clockwise rotation of the connecting ear 103 will drive the teeth 201 to rotate. The rotation of the teeth 201 will squeeze the positioning teeth 204 to move toward the inside of the slot 203, and will squeeze the compression spring 205 through the positioning teeth 204. After the cab is fully supported, the cylinder body 102 will drive the connecting ear 103 to rotate a certain angle on the surface of the inner ring 202, and then under the rebound force of the compression spring 205, the positioning teeth 204 can be pushed outward at the same time, and the positioning teeth 204 can resist the teeth 201, which can prevent the cylinder body 102 and the connecting ear 103 from reversing and slipping, thereby making the connection of the cylinder body 102 self-locking, thereby improving the stable support of the cylinder body 102.

[0028] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A self-locking mechanism for an oil cylinder in a vehicle cab, comprising a rotating shaft (101), an oil cylinder body (102), and a connecting ear (103), wherein the end of the oil cylinder body (102) is fixedly connected to the connecting ear (103), and the connecting ear (103) is sleeved on the surface of the rotating shaft (101), characterized in that: A self-locking mechanism is provided inside the connecting ear (103); The self-locking mechanism comprises a tooth (201), an inner ring (202), a notch (203), a positioning tooth (204) and a compression spring (205), wherein the tooth (201) is fixedly connected to the inner wall of the connecting ear (103), the number of the tooth (201) is several and the teeth (201) are evenly distributed on the inner wall of the connecting ear (103), the inner ring (202) is arranged inside the connecting ear (103), the inner ring (202) is connected to the rotating shaft (101), the notch (203) is opened on both sides of the inner ring (202), one end of the positioning tooth (204) is connected to the inside of the notch (203) by a hinge, and the other end of the positioning tooth (204) is matched with the tooth (201), one end of the compression spring (205) is fixedly connected to the inner wall of the notch (203), and the other end of the compression spring (205) is fixedly connected to the inner side of the positioning tooth (204).

2. The self-locking mechanism of the oil cylinder in the vehicle cab according to claim 1, characterized in that: The front side of the positioning tooth (204) is fixedly connected to a long rod (301), and the front side of the inner ring (202) is provided with a groove (302), and the groove (302) is used in conjunction with the long rod (301).

3. The self-locking mechanism of the oil cylinder in the vehicle cab according to claim 1, characterized in that: The top of the front side of the connecting ear (103) is fixedly connected to a micro electric cylinder (303), and the output end of the bottom of the micro electric cylinder (303) is fixedly connected to a clamping ring (304), and the inner side of the clamping ring (304) is in contact with the long rod (301).

4. The self-locking mechanism of the oil cylinder in the vehicle cab according to claim 3, characterized in that: The inner side of the snap ring (304) is configured as an inclined surface, and the inclined surface of the snap ring (304) is adapted to the long rod (301).

5. The self-locking mechanism of the oil cylinder in the vehicle cab according to claim 3, characterized in that: The front side of the connecting ear (103) is fixedly connected with a blocking bar (4), and the blocking bars (4) are respectively located on both sides of the snap ring (304) and are in close contact with the outer side of the snap ring (304).

6. The self-locking mechanism of the oil cylinder in the vehicle cab according to claim 1, characterized in that: There are several compression springs (205) evenly distributed inside the slot (203).

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