Hydraulic cylinder with a buffer structure

Abstract

The utility model discloses a hydraulic oil cylinder with buffer structure, including cylinder body, the bottom end fixedly connected with bottom cover of cylinder body, the inside upper end threaded connection of cylinder body has the guide sleeve, the inside setting of cylinder body has reciprocating piston, reciprocating piston upper end middle position vertical fixedly connected with piston rod, reciprocating piston bottom end middle position fixedly connected with connecting rod, the inside middle position of bottom cover is equipped with the slot, the inside setting of slot has first buffer subassembly, the position of reciprocating piston upper end is located piston rod outside and is provided with second buffer subassembly. In the utility model, the first buffer subassembly can buffer reciprocating piston when ascending, avoid reciprocating piston to hit the lower end of guide sleeve, and the second buffer subassembly and third buffer subassembly can buffer reciprocating piston when descending, avoid reciprocating piston to hit the bottom cover.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, and in particular to a hydraulic cylinder with a buffer structure. Background Technology

[0002] A hydraulic cylinder is a support device that performs telescopic reciprocating operations. It is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion. It has a simple structure, can achieve reciprocating motion, and operates simply and smoothly. With the continuous development of technology, people have increasingly higher requirements for the manufacturing process of hydraulic cylinders.

[0003] Existing hydraulic cylinders have certain drawbacks in use. During operation, the piston may hit the bottom or top, and without cushioning, the piston is prone to damage, reducing the cylinder's lifespan and hindering user experience. To overcome these disadvantages, this invention provides a hydraulic cylinder with a cushioning structure. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a hydraulic cylinder with a buffer structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a hydraulic cylinder with a buffer structure, comprising a cylinder body, a bottom cover fixedly connected to the bottom end of the cylinder body, a guide sleeve threadedly connected to the upper end of the cylinder body, a reciprocating piston disposed inside the cylinder body, a piston rod vertically fixedly connected to the middle position of the upper end of the reciprocating piston, a connecting rod fixedly connected to the middle position of the bottom end of the reciprocating piston, a slot being opened in the middle position inside the bottom cover, a first buffer assembly disposed inside the slot, a second buffer assembly disposed at the position outside the piston rod on the upper end of the reciprocating piston, and a third buffer assembly disposed between the outer side of the bottom end of the reciprocating piston and the outer ring of the upper end of the bottom cover.

[0006] Furthermore, a second connector and a first connector are fixedly connected to the upper and lower ends of the cylinder side, respectively.

[0007] Furthermore, the first buffer assembly includes a first spring and a top plate, the first spring being fixedly connected to the bottom end of the slot, and the top plate being fixedly connected to the upper end of the first spring.

[0008] Furthermore, the second buffer assembly includes a first connecting ring fixedly connected to the outer ring of the upper end of the reciprocating piston, and a second spring fixedly connected to the upper end of the first connecting ring, the second spring being sleeved and connected to the piston rod.

[0009] Furthermore, a second connecting ring is fixedly connected to the upper end of the second spring, and a first washer is fixedly connected to the upper end of the second connecting ring.

[0010] Furthermore, the third buffer assembly includes a first permanent magnet and a second permanent magnet. The first permanent magnet is fixedly connected to the outer ring of the upper end of the bottom cover, and the second permanent magnet is fixedly connected to the outer ring of the bottom end of the reciprocating piston. A second washer is fixedly connected to the bottom end of the second permanent magnet.

[0011] The beneficial effects of this utility model are:

[0012] In use, the hydraulic cylinder with a buffer structure can buffer the reciprocating piston when it rises through the first buffer component, preventing the reciprocating piston from hitting the lower end of the guide sleeve. The second and third buffer components can buffer the reciprocating piston when it descends, preventing the reciprocating piston from hitting the bottom cover. Attached Figure Description

[0013] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 : Front view of this utility model;

[0015] Figure 2 : A schematic diagram of the overall structure of this utility model;

[0016] Figure 3 : A cross-sectional view of this utility model;

[0017] Figure 4 : A schematic diagram of the first buffer component of this utility model;

[0018] Figure 5 : Schematic diagram of the second permanent magnet structure of this utility model.

[0019] The attached figures are labeled as follows:

[0020] 1. Cylinder block; 2. Bottom cover; 3. First connector; 4. Second connector; 5. Guide sleeve; 6. Reciprocating piston; 7. Piston rod; 8. Connecting rod; 9. Slot; 10. First spring; 11. Top plate; 12. First permanent magnet; 13. First connecting ring; 14. Second spring; 15. Second connecting ring; 16. First washer; 17. Second permanent magnet; 18. Second washer. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1-5 As shown, a hydraulic cylinder with a buffer structure is disclosed, comprising a cylinder body 1, a bottom cover 2 fixedly connected to the bottom end of the cylinder body 1, a guide sleeve 5 threadedly connected to the upper end of the cylinder body 1, a reciprocating piston 6 disposed inside the cylinder body 1, a piston rod 7 vertically fixedly connected to the middle position of the upper end of the reciprocating piston 6, a connecting rod 8 fixedly connected to the middle position of the bottom end of the reciprocating piston 6, a slot 9 opened in the middle position inside the bottom cover 2, a first buffer assembly disposed inside the slot 9, a second buffer assembly disposed at the position outside the piston rod 7 at the upper end of the reciprocating piston 6, and a third buffer assembly disposed between the outer side of the bottom end of the reciprocating piston 6 and the outer ring of the upper end of the bottom cover 2.

[0023] As shown in the figure, the second connector 4 and the first connector 3 are fixedly connected to the upper and lower ends of the side of the cylinder 1, respectively.

[0024] As shown in the figure, the first buffer assembly includes a first spring 10 and a top plate 11. The first spring 10 is fixedly connected to the bottom end of the slot 9, and the top plate 11 is fixedly connected to the upper end of the first spring 10. The reciprocating piston 6 rises along the cylinder 1, and the piston rod 7 rises with it. The first washer 16 on the second connecting ring 15 first contacts the bottom end of the guide sleeve 5. As the reciprocating piston 6 moves, the second spring 14 is compressed, thereby preventing the reciprocating piston 6 from hitting the lower end of the guide sleeve 5.

[0025] As shown in the figure, the second buffer assembly includes a first connecting ring 13 fixedly connected to the upper outer ring of the reciprocating piston 6. A second spring 14 is fixedly connected to the upper end of the first connecting ring 13. The second spring 14 is sleeved and connected to the piston rod 7. A second connecting ring 15 is fixedly connected to the upper end of the second spring 14. A first washer 16 is fixedly connected to the upper end of the second connecting ring 15. The third buffer assembly includes a first permanent magnet 12 and a second permanent magnet 17. The first permanent magnet 12 is fixedly connected to the upper outer ring of the bottom cover 2. The second permanent magnet 17 is fixedly connected to the lower outer ring of the reciprocating piston 6. A second washer 18 is fixedly connected to the lower end of the second permanent magnet 17. The reciprocating piston 6 descends along the cylinder 1. The connecting rod 8 contacts the upper end of the top cover. As the reciprocating piston 6 descends, the first spring 10 is compressed, which provides initial buffering. The opposite sides of the first permanent magnet 12 and the second permanent magnet 17 are of the same pole and repel each other, which can provide further buffering and prevent the reciprocating piston 6 from hitting the bottom cover 2.

[0026] Working principle: During use, the first buffer component cushions the reciprocating piston 6 as it rises. Specifically, hydraulic oil enters the cylinder 1 through the first connector 3 and exits through the second connector 4, thus pushing the reciprocating piston 6 upwards along the cylinder 1. The piston rod 7 rises accordingly, and the first washer 16 on the second connecting ring 15 first contacts the bottom end of the guide sleeve 5. As the reciprocating piston 6 moves, the second spring 14 is compressed, preventing the reciprocating piston 6 from impacting the lower end of the guide sleeve 5. The first component and the third buffer component can buffer the reciprocating piston 6 as it descends. Specifically, hydraulic oil enters the cylinder 1 through the second connector 4, and the hydraulic oil in the cylinder 1 is discharged through the first connector 3, which can push the reciprocating piston 6 down along the cylinder 1. The connecting rod 8 is in contact with the upper end of the top cover. As the reciprocating piston 6 descends, the first spring 10 is compressed, which plays a preliminary role in buffering. The first permanent magnet 12 and the second permanent magnet 17 are on the same pole and repel each other, which can play a secondary role in buffering and prevent the reciprocating piston 6 from hitting the bottom cover 2.

[0027] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A hydraulic cylinder with a buffer structure, comprising a cylinder body (1), characterized in that: The bottom end of the cylinder (1) is fixedly connected to the bottom cover (2). The upper end of the cylinder (1) is threadedly connected to the guide sleeve (5). The cylinder (1) is provided with a reciprocating piston (6). The middle position of the upper end of the reciprocating piston (6) is vertically fixedly connected to the piston rod (7). The middle position of the bottom end of the reciprocating piston (6) is fixedly connected to the connecting rod (8). The middle position of the bottom cover (2) is provided with a slot (9). The slot (9) is provided with a first buffer component. The upper end of the reciprocating piston (6) is provided with a second buffer component located outside the piston rod (7). The outer side of the bottom end of the reciprocating piston (6) is provided with a third buffer component between the outer side of the bottom end of the reciprocating piston (6) and the outer ring of the upper end of the bottom cover (2).

2. A hydraulic cylinder with a buffer structure according to claim 1, characterized in that: The cylinder body (1) has a second connector (4) and a first connector (3) fixedly connected to the upper and lower ends of its side.

3. A hydraulic cylinder with a buffer structure according to claim 1, characterized in that: The first buffer assembly includes a first spring (10) and a top plate (11). The first spring (10) is fixedly connected to the bottom end inside the slot (9), and the top plate (11) is fixedly connected to the upper end of the first spring (10).

4. A hydraulic cylinder with a buffer structure according to claim 1, characterized in that: The second buffer assembly includes a first connecting ring (13) fixedly connected to the outer ring of the upper end of the reciprocating piston (6), and a second spring (14) fixedly connected to the upper end of the first connecting ring (13). The second spring (14) is sleeved and connected to the piston rod (7).

5. A hydraulic cylinder with a buffer structure according to claim 4, characterized in that: The upper end of the second spring (14) is fixedly connected to a second connecting ring (15), and the upper end of the second connecting ring (15) is fixedly connected to a first washer (16).

6. A hydraulic cylinder with a buffer structure according to claim 1, characterized in that: The third buffer assembly includes a first permanent magnet (12) and a second permanent magnet (17). The first permanent magnet (12) is fixedly connected to the outer ring of the upper end of the bottom cover (2), and the second permanent magnet (17) is fixedly connected to the outer ring of the bottom end of the reciprocating piston (6). A second washer (18) is fixedly connected to the bottom end of the second permanent magnet (17).

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