A stepped energy-consuming metal damper

Abstract

The present invention belongs to the technical field of energy dissipation and shock absorption, and discloses a stepped energy dissipation metal damper. The first energy dissipation component and the second energy dissipation component undertake the main shock absorption and energy dissipation tasks. The force transmission block on the lower surface of the upper connecting plate and the gear in the first energy dissipation component carry out stepped energy dissipation conversion work. Under different earthquake energy inputs, by converting the components undertaking shock absorption and energy dissipation work, the first energy dissipation component and the second energy dissipation component undertake energy dissipation tasks within their respective suitable vibration ranges, thereby achieving staged energy dissipation, ensuring that the energy dissipation components work within their respective shock absorption ranges, and avoiding the situation where the energy dissipation components are excessively deformed and thus lose their protective effect on building facilities. When the earthquake magnitude is too large, the first energy dissipation component and the second energy dissipation component act together to carry out shock absorption and energy dissipation, achieving the safety guarantee of building facilities, solving the problem that the conventional stepped damper is prone to deformation and lose its seismic effect in earthquake resistance, and providing a safety guarantee.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy dissipation shock absorption, and particularly relates to a stepped energy dissipation metal damper. Background Art

[0002] With the continuous development and progress of China's railway engineering field, the requirements for the seismic structure design of railway bridges and other construction projects have also increased accordingly. The staged yielding metal energy dissipation damper has gradually become the primary energy dissipation device for building reinforcement.

[0003] At present, most staged yielding energy dissipation dampers achieve staged energy dissipation by combining energy dissipation components with different yield displacements. In general, the deformation stiffness in the second stage of this type of structure is designed to be less than that in the first stage to achieve a progressive and stable energy dissipation process.

[0004] However, the staged yielding metal energy dissipation damper is prone to large deformations and even structural damage under large earthquakes, and it is difficult to repair after the earthquake, resulting in the stability and safety of railway bridges not being effectively guaranteed. Summary of the Invention

[0005] The purpose of the present invention is to provide a stepped energy dissipation metal damper. By performing a staged conversion of the shock absorption work on the first energy dissipation component and the second energy dissipation component, the main seismic resistance is achieved by the first energy dissipation component, the second energy dissipation component, and the combined action of the first energy dissipation component and the second energy dissipation component at different earthquake magnitudes respectively. And the transmission device enables the energy dissipation device to undergo staged yielding when subjected to force, so that the damper can obtain a certain buffer, in order to overcome the situation in the prior art that deformation may occur during seismic resistance, resulting in the lack of guarantee of seismic stability and safety.

[0006] The technical solution of the present invention is as follows:

[0007] A stepped energy dissipation metal damper, comprising:

[0008] An upper connecting plate, with first racks provided at both ends of the lower surface of the upper connecting plate;

[0009] A lower connecting plate, located below the upper connecting plate;

[0010] Two first energy dissipation components, located between the upper connecting plate and the lower connecting plate, symmetrically distributed at both ends of the upper surface of the lower connecting plate along the length direction of the connecting plate. The first energy dissipation component includes an energy dissipation plate and a force transmission plate. One end of the energy dissipation plate is connected to the lower connecting plate, and the other end of the energy dissipation plate is connected to the lower surface of the force transmission plate. A second rack is provided on the upper surface of the force transmission plate, and a gear is mounted on the force transmission plate through a connecting component. The gear meshes with the first rack and the second rack respectively;

[0011] The second energy-consuming component is located between the upper connecting plate and the lower connecting plate and between the two first energy-consuming components. The second energy-consuming component includes a connecting cover plate and two bent energy-consuming plates. The lower end of the bent energy-consuming plate is fixedly connected to the lower connecting plate, the upper end of the bent energy-consuming plate is fixedly connected to the connecting cover plate, and the upper surface of the connecting cover plate contacts the upper connecting plate.

[0012] Two force-transferring stoppers are located on the lower surface of the upper connecting plate and are respectively arranged at positions between the connecting cover plate and the force-transferring plate.

[0013] Further, the connecting component is a fixing frame. The fixing frame is a set of two support plates. One end of the support plate is connected to the lower connecting plate, and the other end is connected to both ends of the gear rotating shaft.

[0014] Further, the gear is sleeved on the gear rotating shaft.

[0015] Further, the cross-section of the middle section of the bent energy-consuming plate is arc-shaped, and both ends are straight plates distributed in parallel.

[0016] Further, the two bent energy-consuming plates are symmetrically arranged in the middle of the lower connecting plate.

[0017] Further, the connecting cover plate and the upper connecting plate are in smooth contact.

[0018] Further, the distance between the force-transferring stopper and the force-transferring plate is greater than or equal to the distance between the connecting cover plate and the force-transferring stopper, and the force-transferring stopper extends longitudinally to the height where the force-transferring plate is located.

[0019] Further, the lower connecting plate is connected to the outside.

[0020] Further, the first rack and the second rack are of equal length.

[0021] Further, the connecting cover plate is rectangular.

[0022] Compared with the prior art, a stepped energy-consuming metal damper provided by the present invention has the following beneficial effects:

[0023] Fixing frames are vertically welded at both ends of the upper surface of the lower connecting plate. A gear is welded at the upper end of the fixing frame. The upper end of the gear meshes with the lower surface of the upper connecting plate, and the lower end of the gear meshes with the upper surface of the force-transferring plate. The lower surface of the force-transferring plate is welded to one end of the energy-consuming plate, and the other end of the energy-consuming plate is welded to the lower connecting plate. When earthquake energy is input, the upper connecting plate is stressed and displaced, driving the first energy-consuming component through the gear, and the stainless steel plate deforms to effectively consume earthquake energy. When earthquake energy continues to be input and the force-transferring device reaches the force-transferring displacement limit value, the first energy-consuming component exits the energy-consuming operation. This design uses the stepped yielding mechanism to effectively avoid the situation that the damper deforms after working and the seismic resistance effect decreases.

[0024] Further, the upper surface of the lower connecting plate is connected to the bending energy dissipation plate, the other surface of the bending energy dissipation plate is connected to the connecting cover plate by fasteners, and the connecting cover plate is in smooth contact with the upper connecting plate. When the first energy dissipation component reaches the limit value of the force transmission displacement, the gear disengages from the rack of the upper connecting plate, and the first energy dissipation component exits the operation. The force transmission block contacts the connecting cover plate, and the second energy dissipation component enters the energy dissipation operation. As the seismic energy continues to increase input, the upper connecting plate continues to displace, and another force transmission block contacts the force transmission plate of the first energy dissipation component. The first energy dissipation component and the second energy dissipation component dissipate energy together, thereby realizing staged energy dissipation enhancement and ensuring the normal realization of the seismic resistance function of the damper when the earthquake magnitude is relatively large. Description of the Drawings

[0025] Figure 1 : Front view of a staged energy dissipation metal damper;

[0026] Figure 2 : Side view of a staged energy dissipation metal damper;

[0027] Figure 3 : Top view of a staged energy dissipation metal damper;

[0028] Figure 4 : Three-dimensional perspective effect diagram of a staged energy dissipation metal damper;

[0029] Reference Signs:

[0030] 1. Upper connecting plate; 2. Lower connecting plate; 3. Force transmission plate; 4. High-strength bolt; 5. Gear; 6. Energy dissipation plate; 7. Force transmission block; 8. Fixed frame; 9. Connecting cover plate; 10. Bending energy dissipation plate; 11. High-strength bolt; 12. High-strength bolt. Detailed Implementation Manner

[0031] In order to enable those skilled in the art of the present technology to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0032] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of the present invention are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0033] As Figure 1 , Figure 2 and Figure 3 shown, this embodiment provides a stepped energy-consuming metal damper. The main structure includes an upper connecting plate 1, a lower connecting plate 2, a first energy-consuming component and a second energy-consuming component. The upper connecting plate 1 and the lower connecting plate 2 are connected to the outside through high-strength bolts 4, mainly playing the role of connecting to the outside.

[0034] In addition, at both ends of the lower surface of the upper connecting plate 1, first racks are distributed for meshing with gears. Two force-transmitting blocks 7 are arranged on the lower surface of the upper connecting plate 1, respectively located between the connecting cover plate 9 and the force-transmitting plate 3, for force conduction in the second stage and the third stage.

[0035] A first energy-consuming component and a second energy-consuming component are arranged between the upper connecting plate 1 and the lower connecting plate 2, and the two energy-consuming components undertake the main shock absorption and energy dissipation functions.

[0036] There are two first energy-consuming components, symmetrically distributed at both ends of the upper surface of the lower connecting plate 2, mainly undertaking the energy-consuming and shock-absorbing tasks in the first stage, including an energy-consuming plate 6 and a force-transmitting plate 3. The energy-consuming plate 6 is made of stainless steel. One end of the energy-consuming plate 6 is connected to the lower connecting plate 2, and the other end of the energy-consuming plate 6 is connected to the lower surface of the force-transmitting plate 3. A second rack is arranged on the upper surface of the force-transmitting plate 3, and the length of the second rack is equal to that of the first rack.

[0037] The second energy-consuming component is located between the two first energy-consuming components, mainly undertaking the energy-consuming and shock-absorbing tasks in the second stage. The second energy-consuming component includes a rectangular connecting cover plate 9 and two bent energy-consuming plates 10. The lower ends of the bent energy-consuming plates 10 are fixedly connected to the lower connecting plate 2, and the upper ends of the bent energy-consuming plates 10 are fixedly connected to the connecting cover plate 9. The upper surface of the connecting cover plate 9 is in contact with the upper connecting plate 1, and the connecting cover plate 9 and the upper connecting plate 1 are in smooth contact.

[0038] The gear 5 is mounted on the force transmission plate 3 through a connecting component. The gear 5 meshes with the first rack and the second rack respectively, and can play a role in the step-by-step conversion of the energy consumption task from the first energy consumption component to the second energy consumption component.

[0039] The connecting component is a fixed frame 8. The fixed frame 8 is a set of two support plates. One end of the support plate is connected to the lower connecting plate 2, and the other end is connected to both ends of the gear rotating shaft. The gear 5 is sleeved on the gear rotating shaft to play a role in force transmission and can also undertake the step-by-step conversion work.

[0040] The bending energy dissipation plate 10 is composed of two straight sections and a bending section. The bending section is located in the middle of the bending energy dissipation plate 10 and plays a major role in energy dissipation in the second energy consumption component. Both ends of the bending section are respectively connected to the straight sections. The two straight sections are arranged in parallel with each other, and the straight sections are parallel to the lower connecting plate 2, and are used to stably carry the connecting cover plate 9. The two bending energy dissipation plates 10 are symmetrically arranged in the middle of the lower connecting plate 2.

[0041] The distance between the force transmission block 7 and the force transmission plate 3 is greater than or equal to the distance between the connecting cover plate 9 and the force transmission block 7, and the force transmission block 7 extends longitudinally to the height where the force transmission plate 3 is located, so as to be able to contact the force transmission plate 3 during the step-by-step conversion.

[0042] The working principle of the present invention is as follows:

[0043] Generally, the lower connecting plate 2 is fixedly connected to the ground, and the upper connecting plate 1 is generally in contact with or connected to buildings such as bridges or rails. During an earthquake, since the building will shake, the upper connecting plate 1 starts to move left or right under the drive of the building shake. At this time, due to the movement of the upper connecting plate 1, a certain displacement is generated, driving the gear 5 to rotate, thereby giving a lateral force to the force transmission plate 3. The energy dissipation plate 6 connected to the force transmission plate 3 is fixed at the bottom and receives a lateral acting force transmitted by the force transmission plate 3 at the top. The energy dissipation plate 6 will generate a small amount of shear strain and at the same time generate a reaction force on the force transmission plate 3. The force transmission plate 3 transmits the force to the gear 5, and the rotation of the gear 5 is blocked, thereby adding resistance to the continuous movement of the upper connecting plate 1, slowing down or preventing the continuous movement of the upper connecting plate 1. At this time, the first-stage shock absorption and energy dissipation are achieved.

[0044] If the seismic energy continues to be input and the first energy dissipation component is not sufficient to achieve the effect of shock absorption and energy dissipation, the upper connecting plate 1 continues to move under the action of the earthquake. When the displacement distance of the upper connecting plate 1 exceeds the designed length of the rack, the gear 5 loses the meshing effect with the first rack of the upper connecting plate 1, and the first energy dissipation component exits the energy dissipation work. At this time, the force transmission block 7 on one side connected to the upper connecting plate 1 contacts the connecting cover plate 9, and the second energy dissipation component enters the energy dissipation work. Since the stiffness of the bending energy dissipation plate 10 is greater than that of the energy dissipation plate 6, the second energy dissipation component is designed to be able to undertake the shock absorption and energy dissipation work with a larger seismic energy input than the first energy dissipation component. The connecting cover plate 9 is subjected to a horizontal force at this time. The connecting cover plate 9 and the bending energy dissipation plate 10 can be connected by high-strength bolts 11, and the force is transmitted to the bending energy dissipation plate 10. The bending energy dissipation plate 10 generates a bending deformation and enters the shock absorption and energy dissipation in the second stage. The straight sections of the upper halves of the two bending energy dissipation plates 10 are deformed simultaneously under the pulling of the connecting cover plate 9, and at the same time, the bending energy dissipation plate 10 dissipates energy by resisting the deformation, achieving the shock absorption and energy dissipation in the second stage.

[0045] As the seismic energy continues to increase, the deformation of the bending energy dissipation plate 10 continues, and the upper connecting plate 1 continues to move horizontally. At this time, one end of the force transmission block 7 contacts the connecting cover plate 9 and acts on the second energy dissipation component, while the other end of the force transmission block 7 contacts the force transmission plate 3 in the first energy dissipation component due to the movement of the upper connecting plate 1. At this time, the energy dissipation work of the seismic energy is jointly borne by the first energy dissipation component and the second energy dissipation component, and the damper enters the third stage of shock absorption and energy dissipation. At this time, the shock absorption and energy dissipation effect reaches the maximum value.

[0046] Compared with the prior art, the present invention provides a staged energy dissipation metal damper. By setting energy dissipation components with different stiffnesses and a staged conversion component, corresponding working states are achieved for different intensities when seismic energy is input, so as to ensure that each energy dissipation component conducts shock absorption and energy dissipation work within its reasonable working range, avoiding the deformation of the energy dissipation component after bearing a large seismic energy input, which may lead to a decrease in the seismic resistance and energy dissipation effect and pose a safety hazard, thus providing a safety guarantee.

[0047] The specific embodiments of the present invention disclosed above are only for illustration. However, the embodiments of the present invention are not limited thereto, and any changes that can be thought of by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A hierarchical energy dissipation metal damper, characterized in that: include: An upper connecting plate (1), wherein first racks are arranged at both ends of the lower surface of the upper connecting plate (1); A lower connecting plate (2) located on the lower side of the upper connecting plate (1); Two first energy-absorbing components are located between the upper connecting plate (1) and the lower connecting plate (2), and are symmetrically distributed at two ends of the upper surface of the lower connecting plate (2) along the length direction of the connecting plate. The first energy-absorbing component comprises an energy-absorbing plate (6) and a force transmission plate (3). One end of the energy-absorbing plate (6) is connected to the lower connecting plate (2), and the other end of the energy-absorbing plate (6) is connected to the lower surface of the force transmission plate (3). A second rack is arranged on the upper surface of the force transmission plate (3). A gear (5) is mounted on the force transmission plate (3) through a connecting component, and the gear (5) is meshed with the first rack and the second rack respectively. a second energy-absorbing component, located between the upper connecting plate (1) and the lower connecting plate (2), and between the two first energy-absorbing components, the second energy-absorbing component comprising a connecting cover plate (9) and two curved energy-absorbing plates (10), the lower ends of the curved energy-absorbing plates (10) being fixedly connected to the lower connecting plate (2), the upper ends of the curved energy-absorbing plates (10) being fixedly connected to the connecting cover plate (9), and the upper surfaces of the connecting cover plates (9) being in contact with the upper connecting plate (1); Two force transmission blocks (7) are located on the lower surface of the upper connecting plate (1) and are respectively arranged between the connecting cover plate (9) and the force transmission plate (3); The connecting cover plate (9) is in smooth contact with the upper connecting plate (1); The distance between the force transmission stopper (7) and the force transmission plate (3) is greater than or equal to the distance between the connecting cover plate (9) and the force transmission stopper (7), and the force transmission stopper (7) extends longitudinally to the height of the force transmission plate (3).

2. A stepped energy dissipation metal damper according to claim 1, characterized in that: The connection assembly is a fixing frame (8), and the fixing frame (8) is a set of two support plates, one end of the support plate is connected to the lower connection plate (2), and the other end is connected to the two ends of the gear shaft.

3. A stepped energy dissipation metal damper according to claim 1 or 2, characterized in that: The gear (5) is connected to the gear shaft.

4. The hierarchical energy dissipation metal damper according to claim 1, characterized in that: The curved energy dissipation plate (10) comprises two straight sections and one curved section, wherein the curved section is located in the middle of the curved energy dissipation plate (10), and the two ends of the curved section are respectively connected to the straight sections, the two straight sections are arranged parallel to each other, and the straight sections are parallel to the lower connecting plate (2).

5. The hierarchical energy dissipation metal damper according to claim 4, characterized in that: The two curved energy dissipation plates (10) are symmetrically arranged in the middle of the lower connecting plate (2).

6. The hierarchical energy dissipation metal damper according to claim 1, characterized in that: The lower connecting plate (2) is connected to the outside.

7. The hierarchical energy dissipation metal damper according to claim 1, characterized in that: The first rack and the second rack are equal in length.

8. The hierarchical energy dissipation metal damper according to claim 1, characterized in that: The connecting cover plate (9) is rectangular.

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