Multi-stage damping hydraulic metal damper

Abstract

The utility model discloses a multistage damping hydraulic metal damper which comprises an upper metal stress plate, a bearing plate and a lower metal stress plate, a first-stage damping assembly is arranged between the upper metal stress plate and the bearing plate, and a second-stage damping assembly is arranged between the bearing plate and the lower metal stress plate. The first-stage damping assembly comprises a spring, the spring is arranged between the upper metal stress plate and the bearing plate, the inner side of the spring wraps a hydraulic device, and viscous damping liquid is arranged in the hydraulic device. In the first stage, a hydraulic device which is wrapped by a spring and internally provided with viscous damping liquid has a buffering function, the upper bearing capacity is weakened, the purpose of step-by-step reduction is achieved in cooperation with the spring, stress surge damage is reduced, and when the stress of an upper metal plate is large, the stress cannot be thoroughly reduced through the spring and the wrapped viscous damping hydraulic device, and the damping effect is good. And the second-stage damping assembly on the lower portion is used for energy dissipation, and aiming at different levels of energy dissipation, the damping and energy dissipation device has the good damping and energy dissipation effect in small earthquakes, medium earthquakes and large earthquakes.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure buildings, in particular to a multi-stage shock-absorbing hydraulic metal damper. Background Art

[0002] There are many types of seismic devices commonly used in energy dissipation and vibration reduction systems, such as metal dampers, friction dampers, viscous dampers, viscoelastic dampers, etc. As a velocity-dependent damping device, the viscous damper has the advantages of high damping efficiency and extremely small static stiffness, and is more suitable for seismic resistance of civil engineering structures. In terms of structure, the viscous damper is equivalent to a piston cylinder with a viscous substance as the working medium, and is widely used in machinery, construction and other fields.

[0003] However, the existing viscous dampers have a small damping force. When a viscous damper with a larger damping force is required in a civil engineering structure, more than two viscous dampers are generally used, which not only increases the construction workload and reduces the construction efficiency, but also wastes resources. Metal dampers use the plastic hysteresis deformation generated when metal materials yield to dissipate the energy input to the structure by earthquakes, which can effectively reduce the vibration response of the structure.

[0004] However, most of the existing metal dampers are energy-dissipating by yielding in medium earthquakes, which results in limited improvement in the yield bearing capacity of the damper in large earthquakes, and the damper cannot play a greater role in energy dissipation in large earthquakes. There are also some metal dampers that only yield and dissipate energy when they are hit by large earthquakes, while they are generally in an elastic stage during medium earthquakes and do not dissipate energy. In this way, the damper cannot dissipate seismic energy in medium earthquakes. In addition, more metal dampers are in an elastic state during small earthquakes and cannot play an energy dissipation role. Therefore, it is of great significance to combine the advantages of viscous dampers and metal dampers to develop a multi-stage shock-absorbing hydraulic metal damper for different levels of energy dissipation. Utility Model Content

[0005] The technical problem to be solved by the utility model is: how to provide a multi-stage shock-absorbing hydraulic metal damper for different levels of energy consumption.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A multi-stage shock-absorbing hydraulic metal damper comprises an upper metal stress-bearing plate, a bearing plate and a lower metal stress-bearing plate, a first-stage shock-absorbing assembly is arranged between the upper metal stress-bearing plate and the bearing plate, and a second-stage shock-absorbing assembly is arranged between the bearing plate and the lower metal stress-bearing plate;

[0008] The first-stage shock-absorbing assembly includes a spring, wherein the spring is arranged between the upper metal force-bearing plate and the load-bearing plate, and the inner side of the spring wraps the hydraulic device, and the hydraulic device has a built-in viscous damping fluid.

[0009] The hydraulic metal damper of the present application includes two-stage shock absorption. The hydraulic device with built-in viscous damping fluid wrapped by the spring in the first stage has a buffering function, which weakens the upper bearing capacity and cooperates with the spring to achieve the purpose of step-by-step reduction, thereby reducing the damage caused by sudden force surge. When the upper metal plate is subjected to a large force, and the spring and the wrapped viscous damping hydraulic device cannot completely reduce the force, the energy will be consumed through the second-stage shock absorption component at the bottom. The multi-stage shock absorption hydraulic metal damper can consume energy at different levels. That is, the viscous damper partially yields and consumes energy during small or medium earthquakes, and all parts of the metal damper yield and consume energy during large earthquakes. Therefore, the present application produces good shock absorption and energy consumption effects in small, medium and large earthquakes.

[0010] As a further solution of the utility model: a plurality of groups of springs are equidistantly arranged between the upper metal stress-bearing plate and the load-bearing plate, and a hydraulic device is enclosed in each spring.

[0011] As a further solution of the utility model: the second-stage shock absorbing assembly includes a metal shock absorbing plate, wherein the upper part of the metal shock absorbing plate is detachably connected to the bearing plate, and the lower part of the metal shock absorbing plate is detachably connected to the lower metal force-bearing plate.

[0012] As a further solution of the utility model: the metal damping plate is in an elliptical structure, with protrusions at both ends.

[0013] As a further solution of the utility model: bent metal plates are respectively installed on the left and right sides of the metal shock-absorbing plate, the two bent metal plates are symmetrically arranged, and one end of the bent metal plate is installed between the metal shock-absorbing plate and the load-bearing plate, and the other end of the bent metal plate is installed between the metal shock-absorbing plate and the lower metal force-bearing plate.

[0014] As a further solution of the utility model: the bent metal plate has an arc-shaped structure, and there is a gap between the inner side and the metal shock-absorbing plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The hydraulic metal damper of the present application includes two-stage shock absorption. The hydraulic device with built-in viscous damping fluid wrapped by the spring in the first stage has a buffering function, which weakens the upper bearing capacity and cooperates with the spring to achieve the purpose of step-by-step reduction, thereby reducing the damage caused by force surge. When the upper metal plate is subjected to a large force, and the spring and the wrapped viscous damping hydraulic device cannot completely reduce it, the energy will be consumed through the lower second-stage shock absorption component. It can consume energy at different levels. The multi-stage shock absorption hydraulic metal damper is of great significance, that is, part of the viscous damper yields and consumes energy during small or medium earthquakes, and all parts of the metal damper yield and consume energy during large earthquakes. Therefore, the present application produces good shock absorption and energy consumption effects in small, medium and large earthquakes.

[0017] 2. The second-stage shock-absorbing component of the present application is an inner elliptical metal shock-absorbing plate, and two bent metal plates are arranged on the outside of the elliptical metal shock-absorbing plate. There is a gap between the inner and outer rings and a connection with corresponding bolts, and there is a gap between the connecting parts. The setting of the inner and outer rings can enable the present application to provide higher bearing capacity, stiffness and energy absorption capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a positional relationship diagram between the multi-stage shock absorbing device and the corridor bridge deck section of the embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the multi-stage shock absorbing device of an embodiment of the utility model;

[0020] Figure 3 This is a schematic structural diagram of the multi-stage shock absorbing device of another embodiment of the utility model from another perspective;

[0021] Description of reference numerals:

[0022] 1. Multi-stage shock absorbing device; 101. upper metal stress plate; 102. load-bearing plate; 103. hydraulic device; 104. spring; 105. bent metal plate; 106. metal shock absorbing plate; 107. fixing bolt; 108. lower metal stress plate;

[0023] 2. Corridor bridge body. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Reference Figure 1 A multi-stage shock-absorbing hydraulic metal damper is installed at the position where the bottom of the corridor bridge body 2 contacts the ground. By setting it between the corridor bridge body 2 and the ground, it can provide an anti-seismic effect on the corridor bridge body 2. It should be noted that a three-dimensional corridor is generally set up in the atrium of a large venue. The three-dimensional corridor is generally designed to be multi-layered or high-altitude suspended, which can connect different areas of the venue and provide a convenient way of passage for spectators or participants. The corridor generally includes a bridge body, handrails, and connection devices for connecting and fixing to the venue. The metal damper proposed in this application is located at the connection between the bridge body and the ground. The damper can be embedded in the ground, and its top is in contact with the corridor bridge body 2, so as to provide anti-seismic effect on the bridge body.

[0026] Reference Figure 2 and Figure 3 The multi-stage shock absorbing device 1 includes an upper metal stress-bearing plate 101, a bearing plate 102, a hydraulic device 103, a spring 104, a bent metal plate 105, an elliptical metal shock absorbing plate 106, a fixing bolt 107 and a lower metal stress-bearing plate 108. The elliptical metal shock absorbing plate 106 is made of an annular steel plate, and the bent metal plate 105 is also made of a steel plate. A bearing plate 102 is arranged above the elliptical metal shock absorbing plate 106, and the top of the bearing plate 102 is connected to the upper metal stress-bearing plate 101 through a spring 104, wherein the inner side of the spring 104 wraps the hydraulic device 103, and the hydraulic device 103 has a built-in viscous damping fluid, and the top of the upper metal stress-bearing plate 101 is connected to the bottom of the terminal bridge deck section.

[0027] Reference Figure 2 and Figure 3 , the lower metal stress-bearing plate 108 is located below the elliptical metal shock-absorbing plate 106; a bent metal plate 105 is provided on both sides of the upper metal stress-bearing plate 101, wherein one end of the metal plate 105 is installed between the bearing plate 102 and the elliptical metal shock-absorbing plate 106 through a fixing bolt 107, and the other end of the metal plate 105 is installed between the lower metal stress-bearing plate 108 and the elliptical metal shock-absorbing plate 106 through a fixing bolt 107.

[0028] The multi-stage shock absorbing device 1 of the present application is mainly composed of two upper and lower metal force-bearing plates and a middle metal shock absorbing plate 106, a spring 104, a hydraulic device 103, etc. There is a gap between the metal shock absorbing plate 106 and the bent metal plate 105 and a connection with corresponding bolts, and there is a gap between the connecting parts, which can produce a good shock absorption and energy dissipation effect in small earthquakes, medium earthquakes and large earthquakes at the same time.

[0029] The working principle of the metal damper in this application is as follows:

[0030] The hydraulic device 103 with built-in viscous damping fluid wrapped by the spring 104 has a buffering function, which weakens the upper bearing force and cooperates with the spring 104 to achieve the purpose of gradual reduction, thereby reducing the damage caused by the surge in force. When the upper metal load-bearing plate 101 is subjected to a large force, and the spring 104 and the wrapped viscous damping hydraulic device cannot completely reduce the force, the energy will be consumed through the elliptical metal shock absorbing plate 106 at the bottom.

[0031] This energy dissipation process: in the first stage, the spring 104 and the viscous damping device provide bearing capacity and stiffness, and bear the main energy dissipation role. After the viscous damping device reaches its limit, the annular steel plate enters the second stage, and the inner and outer rings (i.e., the inner elliptical metal shock-absorbing plate 106 and the outer bent metal plate 105) cooperate to provide bearing capacity, stiffness and energy dissipation capacity at the same time, that is, the circular metal shock-absorbing plate 106 and the outer bent metal plate 105 are bent at the same time to achieve the seismic effect of the second stage.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-stage shock absorbing hydraulic metal damper, characterized in that: It comprises an upper metal stress-bearing plate (101), a bearing plate (102) and a lower metal stress-bearing plate (108), wherein a first-stage shock-absorbing component is provided between the upper metal stress-bearing plate (101) and the bearing plate (102), and a second-stage shock-absorbing component is provided between the bearing plate (102) and the lower metal stress-bearing plate (108); The first-stage shock-absorbing assembly includes a spring (104), wherein the spring (104) is arranged between the upper metal force-bearing plate (101) and the bearing plate (102), and the inner side of the spring (104) wraps around the hydraulic device (103), and the hydraulic device (103) has a built-in viscous damping fluid.

2. A multi-stage shock absorbing hydraulic metal damper according to claim 1, characterized in that: A plurality of groups of springs (104) are equidistantly arranged between the upper metal force-bearing plate (101) and the bearing plate (102), and each spring (104) is provided with a hydraulic device (103) wrapped therein.

3. The multi-stage shock absorbing hydraulic metal damper according to claim 1 is characterized in that: The second-stage shock absorbing assembly comprises a metal shock absorbing plate (106), wherein the upper portion of the metal shock absorbing plate (106) is detachably connected to the bearing plate (102), and the lower portion of the metal shock absorbing plate (106) is detachably connected to the lower metal force bearing plate (108).

4. The multi-stage shock absorbing hydraulic metal damper according to claim 3 is characterized in that: The metal damping plate (106) is in an elliptical structure, with two ends thereof being convex.

5. The multi-stage shock absorbing hydraulic metal damper according to claim 4 is characterized in that: A bent metal plate (105) is installed on the left and right sides of the metal damping plate (106), respectively. The two bent metal plates (105) are symmetrically arranged, and one end of the bent metal plate (105) is installed between the metal damping plate (106) and the bearing plate (102), and the other end of the bent metal plate (105) is installed between the metal damping plate (106) and the lower metal force-bearing plate (108).

6. A multi-stage shock absorbing hydraulic metal damper according to claim 5, characterized in that: The bent metal plate (105) is in an arc-shaped structure, and a gap exists between the inner side and the metal damping plate (106).

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