Spring type energy dissipation device

Abstract

The utility model discloses a spring type energy dissipation device which comprises an outer barrel, an inner barrel and a spring, the piston plate is arranged in the outer cylinder and can move in the axial direction of the outer cylinder; one end of the shaft rod extends into the outer cylinder and then is connected with the piston plate, and the other end of the shaft rod extends out of the outer side of the outer cylinder; the at least two springs are respectively sleeved on the shaft rod and are positioned between the piston plate and the end part of the outer cylinder; all the springs are arranged in the axial direction of the shaft rod, and the rigidity between the springs is gradually increased from one side of the piston plate to the other side of the piston plate. By arranging the springs with different rigidities, multi-stage buffering and gradient energy dissipation can be achieved, and the buffering performance is further improved.

Description

Technical Field

[0001] This utility model relates to the technical field of slope protection equipment, specifically to a spring-type energy dissipation device. Background Technology

[0002] In slope protection systems, pressure-reducing rings are typically installed between the steel wire ropes and anchor bolts of the protective netting. These rings enhance the buffering capacity of the slope protection system and reduce damage from falling rocks. However, existing pressure-reducing rings rely on the plastic deformation of metal rings to absorb energy, requiring replacement after each impact and lacking reusability. To address this, patent application CN201920182578.1 discloses an energy-dissipating component with a spring. This component absorbs the impact force of falling rocks on the protection system through the contraction of the spring and can be reused as long as the spring remains intact, reducing the maintenance cost of the protection system. However, this technology still has a problem: relying on only one spring to absorb the impact force results in insufficient buffering performance. Utility Model Content

[0003] To address the aforementioned issues, this application provides a spring-type energy dissipation device that exhibits excellent dynamic stability and is capable of achieving gradient energy dissipation.

[0004] The objective of this utility model is achieved through the following technical solution: a spring-type energy dissipation device, comprising:

[0005] outer cylinder;

[0006] A piston plate is disposed inside the outer cylinder and is movable along the axial direction of the outer cylinder;

[0007] The shaft has one end extending into the outer cylinder and connecting to the piston plate, and the other end extending out of the outer cylinder.

[0008] At least two springs are respectively sleeved on the shaft and located between the piston plate and the end of the outer cylinder; all springs are arranged along the axial direction of the shaft, and the stiffness of the springs increases from one side of the piston plate to the other.

[0009] The stiffness difference between two adjacent springs is 20%.

[0010] This invention, by setting springs with different stiffnesses, can achieve multi-level buffering and gradient energy dissipation, further improving the buffering performance.

[0011] Several partitions are movably sleeved on the shaft, with each partition located between two adjacent springs. By setting the partitions, force transmission between the springs can be better achieved, improving the stability of the device.

[0012] The inner wall of the outer cylinder is coated with tungsten carbide to improve the wear resistance of the inner wall of the outer cylinder.

[0013] The shaft is provided with a limiting plate to limit the length of the shaft extending into the outer cylinder.

[0014] A sealing ring is provided between the end wall of the outer cylinder and the shaft to prevent foreign objects from entering the interior of the outer cylinder.

[0015] The outer cylinder is provided with a connector at the end opposite to where the shaft is inserted. Both the connector and the end of the shaft located outside the outer cylinder are provided with connecting holes to facilitate the connection of an external steel wire rope.

[0016] The outer cylinder includes a cylinder body and a detachable cap connected to the cylinder body. By making the outer cylinder detachable, it is convenient to install various components.

[0017] Compared with the prior art, this application has the following beneficial effects: by setting springs with different stiffnesses, this utility model can achieve multi-level buffering and gradient energy dissipation, further improving the buffering performance.

[0018] Some of the additional features of this application will be described in the following description. These additional features will become apparent to those skilled in the art upon examination of the following description and the accompanying drawings, or upon understanding the production or operation of the embodiments. The features disclosed in this application can be implemented and achieved through the practice or use of various methods, means, and combinations thereof with respect to the specific embodiments described below. Attached Figure Description

[0019] The accompanying drawings, which are provided to further illustrate this application and constitute a part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute a limitation thereof. In the drawings, the same reference numerals denote the same components.

[0020] Figure 1 This is a schematic diagram of the outer cylinder of this utility model after being cut open.

[0021] Figure 2 This is a schematic diagram of the state of this utility model when subjected to external impact.

[0022] The reference numerals in the above figures are: 1-outer cylinder, 2-cylinder cover, 3-joint, 4-piston plate, 5-spring, 6-shaft, 7-partition plate, 8-sealing ring, 9-limiting plate, 10-connecting hole. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments.

[0024] Example

[0025] like Figure 1 As shown, this embodiment discloses a spring-type energy dissipation device, which includes: an outer cylinder 1, a piston plate 4, a shaft 6, and at least two springs 5.

[0026] The outer cylinder 1 is a hollow cylindrical structure made of 304 stainless steel, with its inner wall coated with tungsten carbide to improve its wear resistance. A piston plate 4 is disposed inside the outer cylinder 1 and can move axially along it. One end of a shaft 6 extends into the outer cylinder 1 from its end and connects to the piston plate 4; the other end of the shaft 6 is located on the outside of the outer cylinder 1. The piston plate 4 and the shaft 6 can be connected as a single unit by welding or threaded connection. Both the piston plate 4 and the shaft 6 are made of 40Cr alloy steel and have undergone nitriding treatment. The number of springs 5 ​​can be set according to the situation; in this embodiment, three springs 5 ​​are respectively sleeved on the shaft 6 and located between the piston plate 4 and the end wall of the outer cylinder 1. Figure 1 As shown. Furthermore, the three springs 5 ​​are arranged along the axial direction of the shaft 6, and the stiffness of the springs increases progressively from one side of the piston plate 4 to the other. That is, the spring 5 furthest from the piston plate 4 has the greatest stiffness, the middle spring 5 has the next greatest stiffness, and the spring 5 closest to the piston plate 4 has the least stiffness. Specifically, in this embodiment, the stiffness difference between any two adjacent springs 5 ​​is set to 20%. For example, the spring 5 with the greatest stiffness has a stiffness of 1000 kN / m, the middle spring 5 has a stiffness of 800 kN / m, and the spring 5 with the least stiffness has a stiffness of 640 kN / m.

[0027] In addition, a connector 3 is provided at the end of the outer cylinder 1 opposite to the insertion end of the shaft 6. Both the connector 3 and the shaft 6 at the outer side of the outer cylinder 1 are provided with connecting holes 10 to facilitate the connection of external steel wire ropes.

[0028] With the above structure, during use, steel wire ropes are used to connect the two ends of the device to the protective net and the anchor rod, respectively. When a rockfall occurs on the slope, the rockfall falls onto the protective net, causing an impact. Under the impact force, the outer cylinder 2 and the shaft 6 are stretched, with the shaft 6 extending further out of the outer cylinder 2. Figure 2As shown, the three springs 5 ​​are compressed sequentially to absorb the impact force and protect the protective system. Through springs 5 ​​of different stiffnesses, multi-level buffering and gradient energy dissipation are achieved, resulting in better buffering performance. When the impact force weakens, the springs recover their elasticity, pushing the shaft back to its original position. In specific implementation, a limiting plate 9 is provided on the shaft 6 to limit the length of the shaft 6 extending into the outer cylinder 1. During the process of the shaft 6 retracting into the outer cylinder 1, the limiting plate 9 abuts against the end of the outer cylinder 1, thereby limiting the shaft 6.

[0029] As an optional implementation of this embodiment, several partitions 7 are movably sleeved on the shaft 6, and the partitions 7 are respectively located between two adjacent springs 5, that is, the partitions 7 and the shaft 6 are in clearance fit, so the partitions 7 can move along the axial direction of the shaft 6. By setting the partitions 7, the force transmission between the springs can be better realized, and the stability of the device is improved.

[0030] In addition, a sealing ring 8 is provided between the end wall of the outer cylinder 1 and the shaft 6 to prevent foreign objects from entering the interior of the outer cylinder 1.

[0031] As an optional implementation of this embodiment, the outer cylinder 1 includes a cylinder body and a detachable cap 2 connected to the cylinder body, in which case the connector 3 can be disposed on the cap 2. By making the outer cylinder 1 detachable, it is convenient to install various components inside the outer cylinder 1.

[0032] This embodiment achieves multi-level buffering and gradient energy dissipation by setting multiple springs with different stiffnesses, further improving the buffering performance.

[0033] It should be noted that all features disclosed in this specification, or all steps in all methods or processes disclosed, may be combined in any way, except for mutually exclusive features and / or steps.

[0034] Furthermore, the specific embodiments described above are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this utility model, and these solutions all fall within the scope of this utility model and its protection. Those skilled in the art should understand that this utility model specification and its drawings are illustrative and not intended to limit the scope of the claims. The scope of protection of this utility model is defined by the claims and their equivalents.

Claims

1. A spring-type energy dissipation device, characterized in that, include: outer cylinder(1); Piston plate (4) is disposed inside the outer cylinder (1) and can move axially along the outer cylinder (1); The shaft (6) has one end extending into the outer cylinder (1) and connected to the piston plate (4), while the other end extends out of the outer cylinder (1). At least two springs (5) are respectively sleeved on the shaft (6) and located between the end of the piston plate (4) and the outer cylinder (1); all springs are arranged along the axial direction of the shaft (6), and the stiffness between the springs increases from one side of the piston plate (4) to the other side.

2. The spring-type energy dissipation device according to claim 1, characterized in that, The stiffness difference between two adjacent springs (5) is 20%.

3. The spring-type energy dissipation device according to claim 1, characterized in that, Several partitions (7) are movably sleeved on the shaft (6), and the partitions (7) are respectively located between two adjacent springs (5).

4. The spring-type energy dissipation device according to claim 1, characterized in that, The inner wall of the outer cylinder (1) is provided with a tungsten carbide coating.

5. The spring-type energy dissipation device according to claim 1, characterized in that, The shaft (6) is provided with a limiting plate (9) for limiting the length of the shaft (6) extending into the outer cylinder (1).

6. The spring-type energy dissipation device according to claim 1, characterized in that, A sealing ring (8) is provided between the end wall of the outer cylinder (1) and the shaft (6).

7. The spring-type energy dissipation device according to claim 1, characterized in that, The outer cylinder (1) is provided with a connector (3) at the end opposite to where the shaft (6) is inserted. Both the connector (3) and the shaft (6) at the end located outside the outer cylinder (1) are provided with a connecting hole (10).

8. The spring-type energy dissipation device according to claim 1, characterized in that, The outer cylinder (1) includes a cylinder body and a detachable cap (2) attached to the cylinder body.

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