Rigidity-adjustable spring damper

Abstract

The utility model provides a spring damper with adjustable rigidity, which relates to the technical field of spring dampers, and comprises a bottom plate, a top plate, steel wire rope structures and a top frame structure, three groups of steel wire rope structures are arranged between the left part and the right part between the bottom plate and the top plate, and the upper ends of the steel wire rope structures are arranged in the top frame structure; the steel wire rope structure is provided with a bottom plate, a top plate and a top frame structure which are vertically arranged, and the steel wire rope structure and the top frame structure are both detachable structures; a lower base plate is arranged on the upper end face of the bottom plate, a lower fixing block is arranged in the center of the lower base plate, and a positioning rod is arranged in the center of the lower fixing block. An ejector rod is arranged in the center of the upper end, an upper base plate is arranged on the lower end face of the ejector rod, and a guide sleeve is arranged in the center of the upper base plate and sleeved outside the upper portion of the positioning rod. The rigidity of the spring damper is convenient to adjust, the adjusting operation is safe and stable, and the use is safe and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of spring dampers, in particular to a spring damper with adjustable stiffness. Background Art

[0002] A damper is a device that dissipates the energy of motion by providing resistance to motion. Since the 1970s, dampers have gradually been used in aerospace, aviation, military, guns, automobiles and other industries, and in structural engineering such as buildings, bridges, and railways. Coil springs are widely used in seismic isolation and shock absorption devices because of their variable stiffness characteristics in which load and deformation are linearly related. Coil springs are classified by their use methods, mainly tension springs and compression springs, among which cylindrical helical compression springs are the most commonly used in dampers.

[0003] In the specification of the comparative document "CN106400998A A helical spring damper with adjustable initial stiffness", it is mentioned that "a first end cover is provided at one end of the guide sleeve, a second end cover is provided at the other end, and a cylindrical helical compression spring is coaxially provided inside; a driving member extends into the guide sleeve from the center of the first end cover and acts on the cylindrical helical compression spring." The spring damper in the comparative document adjusts its stiffness by winding the wire rope, but the winding of the wire rope is not stable and is prone to rewinding errors. The adjustment is not stable and reliable, and it is not convenient and practical. Utility Model Content

[0004] In order to overcome the defects of the prior art, a spring damper with adjustable stiffness is provided to solve the problem that the spring damper in the comparative document adjusts its stiffness by winding up the wire rope, but the winding of the wire rope is not stable, and it is easy to have reverse winding errors, and the adjustment is not stable and reliable, which is not convenient and practical.

[0005] To achieve the above-mentioned purpose, a spring damper with adjustable stiffness is provided, comprising a bottom plate, a top plate, a wire rope structure and a top frame structure, wherein three sets of wire rope structures are installed between the left and right parts between the bottom plate and the top plate, and the upper ends of the wire rope structures are installed in the top frame structure, the wire rope structure is vertically arranged between the bottom plate, the top plate and the top frame structure, and the wire rope structure and the top frame structure are both detachable structures.

[0006] Preferably, a lower pad is provided on the upper end surface of the base plate, a lower fixing block is provided at the center of the lower pad, and a positioning rod is provided at the center of the lower fixing block.

[0007] Preferably, a top rod is arranged at the center of the upper end, an upper pad is arranged at the lower end surface of the top plate, a guide sleeve is arranged at the center of the upper pad, and the guide sleeve is sleeved outside the upper part of the positioning rod.

[0008] Preferably, a spring is disposed outside the guide sleeve and the positioning rod, and the upper end of the spring is pressed against the top plate, and the lower end of the spring is pressed against the bottom plate, while the three groups of steel wire rope structures on the left and right sides are respectively enclosed outside the left and right sides of the spring.

[0009] Preferably, a lower fixing rod is provided at the lower part of the wire rope structure, the lower fixing rod is sleeved in the bottom plate, and a lower limiting plate is provided at the lower end of the lower fixing rod, and the lower limiting plate is located at the lower end surface of the bottom plate.

[0010] Preferably, an upper threaded rod is provided at the upper end of the wire rope structure, the lower part of the upper threaded rod is sleeved in the top plate, and the middle rod body of the upper threaded rod is twisted with a lower adjusting nut, and the upper rod body of the upper threaded rod is twisted with a middle adjusting nut and an upper adjusting nut, and at the same time, the upper adjusting nut, the middle adjusting nut and the lower adjusting nut can move up and down on the upper threaded rod.

[0011] Preferably, the top frame structure is provided with an upper mounting plate, and four groups of connecting rods are vertically fixed to the upper end surface of the upper mounting plate, and the upper ends of the connecting rods are fixed under the upper pull ring, and the upper part of the upper threaded rod is arranged through the upper mounting plate, and the upper adjusting nut and the middle adjusting nut are respectively located on the upper and lower end surfaces of the upper mounting plate, and the upper threaded rod is located on the upper end surface of the top plate.

[0012] The beneficial effects of the utility model are:

[0013] (1) The steel wire rope structure of the utility model passes through the bottom plate and the top plate in sequence from bottom to top. The three groups of steel wire rope structures on the left side are enclosed in the left part of the outer ring surface of the spring, and the three groups of steel wire rope structures on the right side are enclosed in the right part of the outer ring surface of the spring. On the one hand, it plays a role in enclosing the spring to prevent it from tilting left and right. On the other hand, it also plays a role in supporting the outer edge between the bottom plate and the top plate, making it safer and more reliable to use.

[0014] (2) In the utility model, the lower limit plate at the lower end of the wire rope structure is limited to the lower end surface of the bottom plate and cannot move. The upper threaded rod on the upper part of the wire rope structure is sleeved in the top plate. The position of the lower adjusting nut on the upper threaded rod is used to control the height of the wire rope structure between the bottom plate and the top plate. By twisting the lower adjusting nut counterclockwise upward, the height of the wire rope structure between the bottom plate and the top plate can be increased, thereby reducing the stiffness of the spring damper. Then, by pulling the top frame structure upward with force, the upper threaded rod is driven to extend further toward the top plate. At this time, by twisting the lower adjusting nut clockwise upward, the height of the wire rope structure between the bottom plate and the top plate can be lowered, thereby increasing the stiffness of the spring damper and facilitating flexible adjustment of the stiffness of the spring damper. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view schematic diagram of an embodiment of the utility model;

[0016] Figure 2 It is a cross-sectional schematic diagram of an embodiment of the utility model;

[0017] Figure 3 It is a schematic diagram of the arrangement between the steel wire rope structure and the top frame structure of an embodiment of the utility model;

[0018] Figure 4 The figure is a schematic diagram of the steel wire rope structure of an embodiment of the utility model.

[0019] In the figure: 1. bottom plate; 10. lower pad; 11. lower fixing block; 12. positioning rod; 2. top plate; 20. upper pad; 21. spring; 22. guide sleeve; 23. top rod; 3. wire rope structure; 30. upper adjusting nut; 31. middle adjusting nut; 32. lower adjusting nut; 33. upper threaded rod; 34. lower fixing rod; 35. lower limit plate; 4. top frame structure; 40. upper pull ring; 41. connecting rod; 42. upper mounting plate. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer, the utility model is further described in detail in combination with the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model. Specific details such as specific system structures and technologies are proposed in order to more thoroughly understand the embodiments of the utility model. The described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. However, it should be clear to those skilled in the art that the utility model can also be implemented in other embodiments without these specific details. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present disclosure.

[0021] See also Figure 1-4 The utility model provides a spring damper with adjustable stiffness, comprising a bottom plate 1, a top plate 2, a steel wire rope structure 3 and a top frame structure 4, three groups of steel wire rope structures 3 are installed between the left and right parts between the bottom plate 1 and the top plate 2, and the upper ends of the steel wire rope structures 3 are installed in the top frame structure 4, the steel wire rope structure 3 is vertically arranged between the bottom plate 1, the top plate 2 and the top frame structure 4, and the steel wire rope structure 3 and the top frame structure 4 are both detachable structures.

[0022] In this embodiment, a lower pad 10 is provided on the upper end surface of the bottom plate 1, a lower fixed block 11 is provided in the center of the lower pad 10, and a positioning rod 12 is provided in the center of the lower fixed block 11; an upper pad 20 is provided on the lower end surface of the top plate 2, a guide sleeve 22 is provided in the center of the upper pad 20, and the guide sleeve 22 is sleeved on the outer part of the upper part of the positioning rod 12; a spring 21 is arranged outside the guide sleeve 22 and the positioning rod 12, and the upper end of the spring 21 is pressed against the bottom plate 1, and at the same time, the three groups of steel wire rope structures 3 on the left and right sides are respectively enclosed on the left and right sides of the spring 21.

[0023] As a preferred embodiment, the steel wire rope structure 3 in the utility model passes through the bottom plate 1 and the top plate 2 in sequence from bottom to top. The three groups of steel wire rope structures 3 on the left side are enclosed in the left part of the outer ring surface of the spring 21, and the three groups of steel wire rope structures 3 on the right side are enclosed in the right part of the outer ring surface of the spring 21. On the one hand, it plays a role in enclosing the spring 21 to prevent it from tilting left and right. On the other hand, it also plays the effect of supporting the outer edge between the bottom plate 1 and the top plate 2, which is safer and more reliable to use.

[0024] In this embodiment, a lower fixing rod 34 is provided at the lower part of the wire rope structure 3, and the lower fixing rod 34 is sleeved in the bottom plate 1, and a lower limit plate 35 is provided at the lower end of the lower fixing rod 34, and the lower limit plate 35 is located at the lower end surface of the bottom plate 1; an upper threaded rod 33 is provided at the upper end of the wire rope structure 3, and the lower part of the upper threaded rod 33 is sleeved in the top plate 2, and the middle rod body of the upper threaded rod 33 is twisted with a lower adjusting nut 32, and the upper rod body of the upper threaded rod 33 is twisted with a middle adjusting nut 31 and an upper adjusting nut 30, and the same The upper adjusting nut 30, the middle adjusting nut 31 and the lower adjusting nut 32 can move up and down on the upper threaded rod 33; the top frame structure 4 is provided with an upper mounting plate 42, and four groups of connecting rods 41 are vertically fixed to the upper end surface of the upper mounting plate 42, and the upper ends of the connecting rods 41 are fixed under the upper pull ring 40, and the upper part of the upper threaded rod 33 is arranged through the upper mounting plate 42, and the upper adjusting nut 30 and the middle adjusting nut 31 are respectively located at the upper and lower end surfaces of the upper mounting plate 42, and the upper threaded rod 33 is located at the upper end surface of the top plate 2.

[0025] As a preferred embodiment, the lower limit plate 35 at the lower end of the wire rope structure 3 in the utility model is limited to the lower end surface of the bottom plate 1 and cannot move. The upper threaded rod 33 on the upper part of the wire rope structure 3 is sleeved in the top plate 2, and the position of the lower adjusting nut 32 on the upper threaded rod 33 is used to control the height of the wire rope structure 3 between the bottom plate 1 and the top plate 2. Twisting the lower adjusting nut 32 upward counterclockwise can increase the height of the wire rope structure 3 between the bottom plate 1 and the top plate 2, thereby reducing the stiffness of the spring damper, and then pulling the top frame structure 4 upward with force, thereby driving the upper threaded rod 33 to extend longer on the top plate 2. At this time, twisting the lower adjusting nut 32 upward clockwise can reduce the height of the wire rope structure 3 between the bottom plate 1 and the top plate 2, thereby increasing the stiffness of the spring damper and facilitating and flexibly adjusting the stiffness of the spring damper.

[0026] The utility model can effectively solve the problem in the comparative document that the stiffness of the spring damper is adjusted by winding the wire rope, but the winding of the wire rope is not stable, and it is easy to have reverse winding errors, the adjustment is not stable and reliable, and it is not convenient and practical. The utility model facilitates the adjustment of the stiffness of the spring damper, and the adjustment operation is safe and stable, and it is safe and reliable to use.

[0027] The above embodiments are used to explain the present invention rather than to limit the present invention. Any modifications and changes made to the present invention within the spirit of the present invention and the scope of the claims for protection shall be included in the protection scope of the present invention.

Claims

1. A spring damper with adjustable stiffness, comprising a bottom plate (1), a top plate (2), a steel wire rope structure (3) and a top frame structure (4), characterized in that: Three sets of steel wire rope structures (3) are installed between the left and right parts of the bottom plate (1) and the top plate (2), and the upper ends of the steel wire rope structures (3) are installed in the top frame structure (4). The steel wire rope structures (3) are vertically arranged between the bottom plate (1), the top plate (2) and the top frame structure (4), and both the steel wire rope structures (3) and the top frame structure (4) are detachable structures.

2. The spring damper with adjustable stiffness according to claim 1, characterized in that: A lower pad (10) is provided on the upper end surface of the bottom plate (1), a lower fixing block (11) is provided at the center of the lower pad (10), and a positioning rod (12) is provided at the center of the lower fixing block (11).

3. The spring damper with adjustable stiffness according to claim 1, characterized in that: A top rod (23) is arranged at the center of the upper end of the 2, an upper pad (20) is arranged at the lower end surface of the top plate (2), a guide sleeve (22) is arranged at the center of the upper pad (20), and the guide sleeve (22) is sleeved outside the upper part of the positioning rod (12).

4. The spring damper with adjustable stiffness according to claim 3, characterized in that: A spring (21) is disposed outside the guide sleeve (22) and the positioning rod (12), and the upper end of the spring (21) is pressed against the top plate (2), and the lower end of the spring (21) is pressed against the bottom plate (1), while three groups of steel wire rope structures (3) on the left and right sides are respectively enclosed outside the left and right sides of the spring (21).

5. The spring damper with adjustable stiffness according to claim 1, characterized in that: A lower fixing rod (34) is provided at the lower part of the wire rope structure (3), the lower fixing rod (34) is sleeved in the bottom plate (1), and a lower limiting plate (35) is provided at the lower end of the lower fixing rod (34), the lower limiting plate (35) is located on the lower end surface of the bottom plate (1).

6. The spring damper with adjustable stiffness according to claim 1, characterized in that: An upper threaded rod (33) is provided at the upper end of the wire rope structure (3), the lower portion of the upper threaded rod (33) is sleeved in the top plate (2), the middle rod body of the upper threaded rod (33) is twisted with a lower adjustment nut (32), and the upper rod body of the upper threaded rod (33) is twisted with a middle adjustment nut (31) and an upper adjustment nut (30), and the upper adjustment nut (30), the middle adjustment nut (31) and the lower adjustment nut (32) are movable up and down on the upper threaded rod (33).

7. The spring damper with adjustable stiffness according to claim 1, characterized in that: The top frame structure (4) is provided with an upper mounting plate (42), and four groups of connecting rods (41) are vertically fixed to the upper end surface of the upper mounting plate (42), and the upper ends of the connecting rods (41) are fixed under the upper pull ring (40), and the upper part of the upper threaded rod (33) is arranged through the upper mounting plate (42), and the upper adjustment nut (30) and the middle adjustment nut (31) are respectively located on the upper and lower end surfaces of the upper mounting plate (42), and the upper threaded rod (33) is located on the upper end surface of the top plate (2).

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