Spiral spring damper capable of achieving early stage rigidity adjustment

A helical spring and damper technology, applied in the direction of spring/shock absorber, spring/shock absorber functional characteristics, spring, etc., can solve the problems of reducing the cost of shock absorption, waste of resources, and the inability to change the early stiffness of the damper, etc., to achieve The effect of reducing the cost of isolation and shortening the length

Active Publication Date: 2017-03-15
桐城市建设投资发展有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this utility model patent obviously has the following disadvantages: 1. Two coil springs are required, and the length of the entire damper is relatively long, which is not suitable for installation in a space with a small distance; 2. It is difficult or even impossible to ensure the two springs in the process Only the stiffness of the spring (including tensile stiffness and compression stiffness) is equal, so the shock absorption effect is different in different wind directions; 3. The early stiffness of the damper cannot be changed to achieve the preset wind resistance level and reduce the cost of shock absorption; 4. A helical spring works in two states of tension and compression at the same time. The metal material and production process of the existing spring are difficult to meet the requirements. The two working states of tension and compression can only be realized by reducing the elastic deformation range of the helical spring. , which obviously wastes resources
It can be seen that although the stiffness of the spring in the patent application scheme can be changed, the effective working length of the spring is not only significantly shortened, but also can only be compressed for energy consumption and vibration reduction, and cannot be stretched for energy consumption and vibration reduction.
In addition, the stiffness of the spring is changed by changing the effective working length of the spring. The adjustment range is limited by the material and shape of the spring itself.

Method used

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  • Spiral spring damper capable of achieving early stage rigidity adjustment
  • Spiral spring damper capable of achieving early stage rigidity adjustment
  • Spiral spring damper capable of achieving early stage rigidity adjustment

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0029] see figure 1 and 4 , the helical spring damper that can adjust the early stiffness in this example is a damper that can be used for seismic reinforcement of building structures. The damper includes a disc-shaped upper end plate 2 and a lower end plate 3. shaped helical compression spring 4, wherein the upper end plate 2 is provided with a guide rod 1, and the guide rod 4 passes through the lower end plate 3 downwards along the center hole of the cylindrical helical compression spring 4; the lower end plate 3 and the guide rod 1 Move and cooperate.

[0030] see figure 1 and 4 , the upper surface of the upper end plate 2 and the lower surface of the lower end plate 3 are respectively provided with two connecting ear plates 11 with hinged holes 12 . And the distance between the hinged hole 12 on the lower end plate 3 and the lower end plate 3 is greater than the length of the end of the guide rod 1 passing through the lower surface of the lower end plate 3 . A flexi...

example 2

[0038] see Figure 7-10 , compared with Example 1, this example has the following main differences:

[0039] 1. Both the first group of preloaded steel cables 8 and the second group of preloaded steel cables 7 are composed of three preloaded steel cables; The middle of each preloaded steel cable.

[0040] 2. In order to prevent dust and other debris from falling on the cylindrical helical compression spring 4 and affect the normal operation of the damper, a layer of rubber protective sleeve 15 is wrapped on the outside of the back pressure device. The two ends of the protective sleeve 15 are respectively connected to the first The outer peripheral surfaces of the floating platen 6 and the second floating platen 5 are glued together. The length of the sheath 15 is greater than the distance between the upper surface of the upper end plate 2 and the lower surface of the lower end plate 3, so as not to affect the work of the damper.

[0041] The implementation method of this ex...

example 3

[0043] see Figures 11 to 13 , the helical spring damper that can adjust the early stiffness in this example is a kind of vibration isolation device (also called seismic isolation support) that can be used for vertical isolation of buildings. Compared with Example 2, this example mainly has the following differences:

[0044] 1. As a vibration isolation support, in order to facilitate installation, in this example, the connecting lug plate set on the upper end plate 2 in Example 2 is omitted, and the edge of the upper end plate 2 is extended radially outward, and evenly arranged at the edge Connect the bolt holes 17.

[0045] 2. The connecting lugs provided on the outside of the lower end plate 3 in Example 2 are omitted, and the lower end plate 3 is extended axially downward from the edge and then radially outward to form the base of the damper, and the connection is evenly arranged on the edge Bolt hole 17; wherein the length extending axially downward is greater than the l...

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PUM

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Abstract

The invention discloses a spiral spring damper capable of achieving early stage rigidity adjustment. The spiral spring damper is characterized in that a back pressing device is further arranged between two end plates of the damper, and comprises two sets of pre-pressing steel cables and two floating pressing plates, wherein at least three pre-pressing steel cables are arranged in each set; the two floating pressing plates are arranged on guide rods between the end plates and a cylindrical spiral compression spring in a sleeving manner correspondingly; the two sets of pre-pressing steel cables are symmetrically distributed on the periphery of the cylindrical spiral compression spring in a straight line state around the axes of the guide rods correspondingly, one ends of each set of pre-pressing steel cables are fixed to one floating pressing plate, and the other ends of each set of pre-pressing steel cables penetrate the other floating pressing plate to be fixed to the end plate adjacent to the floating pressing plate; a rigging spiral buckle is connected to the middle portion of each pre-pressing steel cable in series; and the two sets of pre-pressing steel cables are tightened, and the cylindrical spiral compression spring is clamped between the two floating pressing plates all the time.

Description

technical field [0001] The present invention relates to shock absorbing devices, and more particularly to dampers employing coil springs. Background technique [0002] A damper is a shock-absorbing device that consumes motion energy by providing motion resistance. The use of dampers for energy dissipation and shock absorption is a traditional technology widely used in industries such as aerospace, aviation, military industry, guns, and automobiles. Since the 1970s, people have gradually applied the technology of using dampers to consume energy and reduce shocks to structural engineering such as buildings, bridges, and railways. The coil spring damper is widely used in the anti-seismic structures of various buildings because of its high impact resistance, low cost and good shock absorption effect. [0003] People pursue a comprehensive anti-seismic performance combining "resistance" and "loss" for the design of buildings, especially the anti-seismic structure of high-rise b...

Claims

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Application Information

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IPC IPC(8): F16F7/00F16F1/12E04H9/02E02D31/08
CPCE02D31/08E04H9/02F16F1/121F16F7/00F16F2228/066F16F2228/08F16F2234/02F16F2238/026
Inventor 沈珊胡济福胡济全
Owner 桐城市建设投资发展有限责任公司
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