Shock-resistant pin shaft for heavy-load machinery

Abstract

The utility model provides an anti-impact pin shaft for a heavy-load machine, and belongs to the technical field of pin shafts of heavy-load machines. Comprising a body and an abutting block, and a circular groove is formed in the bottom of the body; a positioning frame is fixedly assembled on the top of the abutting block, a first spring is fixedly assembled on the outer wall of the positioning frame, a moving ring is fixedly connected to the end, away from the positioning frame, of the first spring, and a connecting rod is rotationally connected to the outer wall of the moving ring. When the pin shaft is impacted, the abutting block is extruded to move towards the position of the body, in the moving process, the second spring begins to contract, meanwhile, the body pushes the connecting rod to move, at the moment, the connecting rod pushes the moving ring to move towards the first spring, the first spring begins to contract under pushing of the moving ring, and impact force is weakened; and the positioning rod and the damping block slide in the sleeve, so that the impact force is further weakened, the impact resistance of the pin shaft in the heavy-load machine is improved, and the service life of the pin shaft is further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of heavy-duty machine pin shafts, in particular to an impact-resistant pin shaft for heavy-duty machinery. Background Art

[0002] Pins are a type of standardized fastener that can be used for static fixed connections or for relative movement with the connected parts. They are mainly used at the hinges of two parts to form hinge connections.

[0003] Due to the operating environment of heavy-duty machines, the end of the pin shaft will be continuously impacted, causing the pin shaft to be continuously impacted during use, thereby causing damage to the pin shaft and affecting the normal use of the pin shaft. In order to cope with the above problems and defects, an impact-resistant pin shaft for heavy-duty machinery is urgently needed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an impact-resistant pin shaft for heavy-load machinery to solve the existing limitation problem that, due to the use environment of the heavy-load machine, the end of the pin shaft is continuously impacted, resulting in the pin shaft being continuously impacted during use, thereby causing damage to the pin shaft and affecting the normal use of the pin shaft.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] An impact-resistant pin shaft for heavy-duty machinery comprises: a main body and a stop block, wherein a circular groove is provided at the bottom of the main body; a positioning frame is fixedly assembled on the top of the stop block, a spring 1 is fixedly assembled on the outer wall of the positioning frame, an end of the spring 1 away from the positioning frame is fixedly connected to a moving ring, an outer wall of the moving ring is rotatably connected to a connecting rod, an end of the connecting rod away from the moving ring is rotatably connected to the top of the circular groove, a positioning pin is fixedly assembled on the top of the circular groove, a spring 2 is fixedly assembled on the outer wall of the positioning pin, and the bottom end of the spring 2 is fixedly connected to the top of the stop block; a positioning rod is fixedly assembled on the top of the positioning frame, a damping block is fixedly assembled on the top of the positioning rod, a sleeve is slidably connected to the outer wall of the damping block, and the top of the sleeve is fixedly connected to the top of the circular groove.

[0007] Preferably, a sliding groove is provided on the outer wall of the main body, the inner wall of the sliding groove is slidably connected to a limiting block, and the side of the limiting block away from the sliding groove is fixedly connected to the inner wall of the stop block.

[0008] Preferably, an annular groove is formed on the outer wall of the stop block, a buffer pad is fixedly mounted on the inner wall of the annular groove, and a through hole is formed on the outer wall of the buffer pad.

[0009] Preferably, an inner cavity is opened inside the body.

[0010] Preferably, the number of the positioning pins and the second spring is four, and the four positioning pins and the second spring are evenly distributed on the top of the stop block.

[0011] Preferably, the cross-sectional shape of the stop block is a "mountain" shape, and the two sides of the stop block are higher than the middle of the stop block.

[0012] Compared with the prior art, the utility model has at least the following beneficial effects:

[0013] 1. In the above scheme, when the pin shaft is hit, the stop block is squeezed and moves toward the position of the main body. During the movement, spring 2 begins to shrink, and at the same time, the main body pushes the connecting rod to move. At this time, the connecting rod pushes the moving ring to move toward one place of the spring. Spring 1 is pushed by the moving ring and begins to shrink, weakening the impact force. The positioning rod and the damping block slide in the sleeve to further weaken the impact force, which is beneficial to improve the impact resistance of the pin shaft in the heavy-duty machine and further improve the service life of the pin shaft.

[0014] 2. In the above scheme, an inner cavity is opened in the main body and steel balls are filled in the inner cavity. At the same time, the number of steel balls is limited to within 75% of the volume of the inner cavity. Thus, when the body is impacted, the force acting on the body is transmitted to the steel ball pile, and the steel ball pile vibrates in the inner cavity, thereby reducing the vibration of the body when it is hit, and finally improving the impact resistance of the body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of an impact-resistant pin shaft for heavy-duty machinery;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the impact-resistant pin shaft for heavy-duty machinery from the first perspective;

[0018] Figure 3 for Figure 2 A in the middle is a schematic diagram of the enlarged three-dimensional structure.

[0019] Reference numerals

[0020] 1. Main body; 2. Stop block; 3. Circular groove; 4. Positioning frame; 5. Spring 1; 6. Moving ring; 7. Connecting rod; 8. Positioning pin; 9. Spring 2; 10. Positioning rod; 11. Damping block; 12. Sleeve; 13. Slide groove; 14. Limit block; 15. Annular groove; 16. Buffer pad; 17. Through hole; 18. Inner cavity.

[0021] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0022] The following is a detailed description of the impact-resistant pin for heavy-duty machinery provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are listed as the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, the embodiment of the utility model provides an impact-resistant pin shaft for heavy-duty machinery, comprising: a body 1 and a stopper 2, a circular groove 3 is provided at the bottom of the body 1; a positioning frame 4 is fixedly assembled on the top of the stopper 2, a spring 5 providing elastic force is fixedly assembled on the outer wall of the positioning frame 4, a moving ring 6 is fixedly connected to the end of the spring 5 away from the positioning frame 4, a connecting rod 7 is rotatably connected to the outer wall of the moving ring 6, and the end of the connecting rod 7 away from the moving ring 6 is rotatably connected to the top of the circular groove 3, a positioning pin 8 is fixedly assembled on the top of the circular groove 3, a spring 2 9 is fixedly assembled on the outer wall of the positioning pin 8, and the bottom end of the spring 2 9 It is fixedly connected to the top of the stop block 2; the top of the positioning frame 4 is fixedly equipped with a positioning rod 10, the top of the positioning rod 10 is fixedly equipped with a damping block 11, the outer wall of the damping block 11 is slidably connected with a sleeve 12, the top of the sleeve 12 is fixedly connected to the top of the circular groove 3, the outer wall of the stop block 2 is provided with an annular groove 15, the inner wall of the annular groove 15 is fixedly equipped with a buffer pad 16, and the outer wall of the buffer pad 16 is provided with a through hole 17. By arranging the annular groove 15, the buffer pad 16 and the through hole 17, it is beneficial for the stop block 2 to buffer when it is impacted, and the impact force is weakened first when the main body 1 is impacted.

[0024] like Figure 2 and Figure 3 As shown, a slide groove 13 is provided on the outer wall of the main body 1, and the inner wall of the slide groove 13 is slidably connected to a limiting block 14. The side of the limiting block 14 away from the slide groove 13 is fixedly connected to the inner wall of the stop block 2. By setting the slide groove 13 and the limiting block 14, it is beneficial to limit the movement of the stop block 2 and improve the stability of the movement of the stop block 2.

[0025] like Figure 2As shown, an inner cavity 18 is opened inside the main body 1. By opening the inner cavity 18 in the main body 1 and filling the inner cavity 18 with steel balls, and limiting the number of steel balls to within 75% of the volume of the inner cavity 18, when impacted, the force applied to the main body 1 is transmitted to the steel ball pile, and the steel ball pile vibrates in the inner cavity 18, thereby reducing the vibration generated by the main body 1 when impacted, and ultimately improving the impact resistance of the main body 1.

[0026] like Figure 2 and Figure 3 As shown, there are four locating pins 8 and springs 9, and the four locating pins 8 and springs 9 are evenly distributed on the top of the stop block 2. By limiting the number and positions of the locating pins 8 and springs 9, it is beneficial to improve the impact resistance of the pin shaft.

[0027] like Figure 2 and Figure 3 The cross-sectional shape of the block 2 is a "mountain" shape, and the two sides of the block 2 are higher than the middle of the block 2. By limiting the block 2, it is beneficial to improve the adaptation effect of the block 2 to the bottom of the body 1 and ensure its impact resistance.

[0028] The technical solution provided by the utility model is that when the main body 1 is hit during operation, the stop block 2 is squeezed and moves toward the position of the main body 1. During the movement, the spring 2 9 begins to contract, and at the same time, the main body 1 pushes the connecting rod 7 to move. At this time, the connecting rod 7 pushes the moving ring 6 to move toward the spring 1 5. The spring 1 5 is pushed by the moving ring 6 and begins to contract, thereby weakening the impact force. The positioning rod 10 and the damping block 11 slide in the sleeve 12 to further weaken the impact force.

[0029] By opening an inner cavity 18 in the main body 1 and filling the inner cavity 18 with steel balls, and limiting the number of steel balls to within 75% of the volume of the inner cavity 18, when the main body 1 is impacted, the force acting on the main body 1 is transmitted to the steel ball pile, and the steel ball pile vibrates in the inner cavity 18, thereby reducing the vibration generated by the main body 1 when impacted, and ultimately improving the impact resistance of the main body 1.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. Anti-impact pin for heavy-duty machinery, characterized in that: include: A body (1) and a stopper (2), wherein a circular groove (3) is formed at the bottom of the body (1); The top of the stop block (2) is fixedly equipped with a positioning frame (4), the outer wall of the positioning frame (4) is fixedly equipped with a spring 1 (5), the end of the spring 1 (5) away from the positioning frame (4) is fixedly connected to a moving ring (6), the outer wall of the moving ring (6) is rotatably connected to a connecting rod (7), the end of the connecting rod (7) away from the moving ring (6) is rotatably connected to the top of the circular groove (3), the top of the circular groove (3) is fixedly equipped with a positioning pin (8), the outer wall of the positioning pin (8) is fixedly equipped with a spring 2 (9), and the bottom end of the spring 2 (9) is fixedly connected to the top of the stop block (2); A positioning rod (10) is fixedly mounted on the top of the positioning frame (4), a damping block (11) is fixedly mounted on the top of the positioning rod (10), a sleeve (12) is slidably connected to the outer wall of the damping block (11), and the top of the sleeve (12) is fixedly connected to the top of the circular groove (3).

2. The impact-resistant pin for heavy-duty machinery according to claim 1, characterized in that: The outer wall of the body (1) is provided with a sliding groove (13), the inner wall of the sliding groove (13) is slidably connected to a limiting block (14), and the side of the limiting block (14) away from the sliding groove (13) is fixedly connected to the inner wall of the stop block (2).

3. The impact-resistant pin for heavy-duty machinery according to claim 1, characterized in that: An annular groove (15) is formed on the outer wall of the stop block (2), a buffer pad (16) is fixedly mounted on the inner wall of the annular groove (15), and a through hole (17) is formed on the outer wall of the buffer pad (16).

4. The impact-resistant pin for heavy-duty machinery according to claim 1, characterized in that: An inner cavity (18) is provided inside the body (1).

5. The impact-resistant pin for heavy-duty machinery according to claim 1, characterized in that: The number of the positioning pins (8) and the second springs (9) is four, and the four positioning pins (8) and the second springs (9) are evenly distributed on the top of the stop block (2).

6. The impact-resistant pin for heavy-duty machinery according to claim 1, characterized in that: The cross-sectional shape of the stop block (2) is a "mountain" shape, and the two sides of the stop block (2) are higher than the middle of the stop block (2).

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