Swing type shock insulation support for power equipment
By using wire rope tip split dampers in the swing-type shock-isolating support of power equipment, the problems of poor self-resetting ability and limited vertical bearing capacity of wire rope dampers in the prior art are solved, and more efficient shock absorption and better torsion resistance are achieved.
Patent Information
- Application Number
- CN202510554224.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2025-06-20
AI Technical Summary
The existing wire rope dampers have residual deformation problems in shock-absorbing applications of power equipment, poor self-resetting capabilities, and limited vertical bearing capacity, making it difficult to meet the needs of high-quality and high-altitude power equipment.
A swing-type shock-isolating support for power equipment is designed, and a wire rope tip splitting damper is used, including a vibration-absorbing steel wire rope group, a recovery pressure plate and a downward pressure splitting block. By restoring the elastic steel plate and the jig structure of the pressure plate, the self-resetting of the wire rope and the vertical bearing capacity are achieved.
It effectively reduces the fundamental frequency of the equipment, improves the damping ratio, enhances the torsion resistance, reduces the residual deformation of the wire rope damper, improves the vertical load-bearing capacity, and ensures the normal operation of the power equipment.
Smart Images
Figure CN120174985A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of shock absorption of power equipment, in particular to a swing-type seismic isolation bearing for power equipment. Background Technique
[0002] Wire rope dampers are of great significance in the seismic isolation and shock absorption applications of power equipment. However, after continuous reciprocating tensile and compressive experiments on wire ropes in the past, residual deformation will occur, and there is no good self-resetting ability, thus reducing the energy dissipation ability of the damper. Especially when used in the swing-type seismic isolation bearing of column-type power equipment, and the vertical bearing capacity of wire rope dampers is limited. When the mass of the shock absorption equipment is too heavy, traditional wire rope dampers will not be able to achieve the effect. Therefore, it is necessary to adopt a new type of damper that can effectively reduce the residual deformation of wire rope dampers and improve the vertical bearing capacity of wire rope dampers.
[0003] At present, wire rope dampers have been applied in the seismic isolation and shock absorption of many power equipment, including swing-type seismic isolation bearings, etc. The wire ropes in the bearings that currently use wire rope dampers are in a fatigued state and have a large amount of residual deformation, thus greatly reducing the seismic and shock absorption ability. Coupled with the action of earthquakes, the bearing will produce a small torsion. Among them, column power equipment is relatively slender, and a large bending moment will be generated at the bearing. Generally, a swing-type seismic isolation bearing is used. However, with the increase of the voltage level, the mass and height of column power equipment increase, and the bearing capacity of existing wire ropes is difficult to meet the requirements. For this reason, we propose a swing-type seismic isolation bearing for power equipment. Summary of the Invention
[0004] The purpose of the present application is to provide a swing-type seismic isolation bearing for power equipment, aiming to solve the problems in the prior art.
[0005] The embodiment of the present application provides a swing-type seismic isolation bearing for power equipment, including a support bearing installed on the ground. The support bearing includes a top plate, a bottom plate, and a wire rope wedge damper located between the top plate and the bottom plate. There are four groups of wire rope wedge dampers in total, which are evenly distributed and fixedly arranged between the top plate and the bottom plate along the four directions of front, back, left, and right. The wire rope wedge damper includes a shock-absorbing wire rope group, a recovery pressure plate, and a downward pressing wedge block. The shock-absorbing wire rope group is arc-shaped and has a connecting plate at the top. The bottom end of the shock-absorbing wire rope group is fixed on the mounting plate. The downward pressing wedge block is fixed at the bottom of the connecting plate. The recovery pressure plate is fixed in the middle of the mounting plate and is located below the downward pressing wedge block. The recovery pressure plate is composed of two elastic steel plates, and there is a gap between the two elastic steel plates. The downward pressing wedge block is slidably inserted into the gap; the connecting plate is fixedly connected to the top plate, and the mounting plate is fixedly connected to the bottom plate.
[0006] Preferably, convex blocks are provided at the tops of the opposite surfaces of the two elastic steel plates, and the cross-section of the downward pressing wedge block is in a hourglass shape; the lower half of the downward pressing wedge block is located below the convex block.
[0007] Preferably, the shock-absorbing steel wire rope group includes a plurality of arc-shaped steel wire ropes arranged in sequence, and the plurality of steel wire ropes all pass through the connecting plate.
[0008] Preferably, each group of the steel wire rope wedge dampers is composed of two steel wire rope wedge dampers arranged side by side, and the axes between adjacent two groups of the steel wire rope wedge dampers are perpendicular to each other.
[0009] Preferably, bolt holes are provided on the top plate, and the bottom plate is fixedly connected to the ground by bolts.
[0010] The beneficial effects of the present invention are as follows: the bearing of the present invention can effectively reduce the fundamental frequency of the equipment and increase the damping ratio, is easy to install, has good energy dissipation capacity and does not affect the functions of the power equipment, can improve the vertical bearing capacity of the damper. After the device is subjected to tensile and compressive loading, the lower part of the wedge will rebound, thus assisting the steel wire rope to return to its original state, enabling the device to have good self-resetting ability and reducing the residual deformation of the steel wire rope damper. The steel wire rope wedge damper adopts a disconnected structure, has good torsional space, and enables the overall bearing to have good anti-torsion ability. Description of the Drawings
[0011] Figure 1 is a schematic diagram of the overall structure of the present invention;
[0012] Figure 2 is the front view of the present invention;
[0013] Figure 3 is the deformation diagram of the present invention when deformed under vertical pressure;
[0014] Figure 4 is the deformation diagram of the present invention when deformed under vertical force and horizontal shear force;
[0015] Figure 5 is the deformation diagram of the invention when subjected to vertical tension;
[0016] Figure 6 is a schematic diagram of the overall structure of the present invention after installing the pillar power equipment;
[0017] Figure 7 is a schematic diagram of the structure of the steel wire rope wedge damper in the present invention;
[0018] Figure 8 are the finite element simulation hysteresis curves of the steel wire rope wedge damper under the action of vertical force and the finite element simulation hysteresis curves under the combined action of vertical force and horizontal shear force.
[0019] In the figure:
[0020] 1. Bolt hole; 2. Top plate; 3. Bottom plate; 4. Connecting plate; 5. Vibration-damping wire rope group; 6. Restoring pressure plate; 61. Elastic steel plate; 62. Down-pressure splitting block; 63. Gap; 7. Equipment bracket; 8. Pillar-type power equipment; 9. Mounting plate; 10. Wire rope splitting damper. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0022] like Figures 1 to 2 A swing-type seismic isolation support for power equipment shown in the figure includes a support support installed on the ground, the support support includes a top plate 2, a bottom plate 3 and a wire rope spike damper 10 located between the top plate and the bottom plate, the wire rope spike damper 10 is provided with four groups, which are evenly distributed in the four directions of front, back, left and right and fixedly arranged between the top plate 2 and the bottom plate 3, the wire rope spike damper 10 includes a vibration-damping wire rope group 5, a recovery pressure plate 6 and a downward pressure spike block 62, the vibration-damping wire rope group 5 is in an arc shape and is provided with a connecting plate 4 on the top, the bottom end of the vibration-damping wire rope group 5 is fixed on the mounting plate 9, the downward pressure spike block 62 is fixed to the bottom of the connecting plate 4, the recovery pressure plate 6 is fixed in the middle of the mounting plate 9 and Located below the downward pressure wedge block 62, the recovery pressure plate 6 is composed of two elastic steel plates 61, and a gap 63 is provided in the middle of the two elastic steel plates 61. The downward pressure wedge block 62 is slidably inserted in the gap 63. The connecting plate 4 is fixedly connected to the top plate 2, and the two are fixed by bolts. The mounting plate 9 is fixedly connected to the bottom plate 3, so that no displacement occurs between the damper and the bottom plate 3, thereby ensuring the normal operation of the damper; in the traditional wire rope damper, after reciprocating loading and unloading, the wire rope cannot reset itself due to fatigue. After this device is subjected to tension and compression loading, the recovery pressure plate 6 will rebound, thereby assisting the wire rope group 5 to return to its original state, so that the device has a good self-resetting ability.
[0023] like Figure 3 or Figure 5 As shown, when the support bracket is subjected to only vertical load, the two elastic steel plates 61 will open to both sides, and the downward pressing wedge block 62 and the gap 63 between the two elastic steel plates 61 will have friction, thereby generating a reverse rebound force, which distributes the vertical bearing capacity of the steel wire rope group 5; Figure 4As shown, when the support bearing is subjected to vertical load and lateral shear load simultaneously, the deformation of the stressed side of the two elastic steel plates 61 will increase. As a result, the side with larger deformation will push the upper part back, sharing the lateral bearing capacity of the steel wire rope, thus strengthening the lateral bearing capacity of the bearing. During an earthquake, if torsion occurs, due to the special separated structure between the downward pressing wedge block 62 and the gap 63 of the steel wire rope wedge damper, when torsion occurs, the distance of the gap will decrease. Therefore, it has a certain anti-torsion ability and does not affect the normal use of the bearing.
[0024] As Figure 7 shown, convex blocks are provided at the tops of the opposite surfaces of the two elastic steel plates 61. The cross-section of the downward pressing wedge block 62 is in the shape of an hourglass. The lower half of the downward pressing wedge block 61 is located below the convex block. When the top plate 2 moves downward under force, the triangular inverted insertion part of the downward pressing wedge block 61 will move downward, thus expanding the lower gap 63. Friction will be generated between the cross-sections of the upper and lower parts, and the energy will be dissipated through friction, thereby reducing the energy transfer of the earthquake to the upper structure. When a horizontal force is generated by the earthquake, the two elastic steel plates 61 move left and right and will be blocked by the downward pressing wedge block 62, and thus slide along the triangular inclined plane, thereby dissipating the energy and reducing the influence of the horizontal force generated by the earthquake on the upper structure.
[0025] The shock-absorbing steel wire rope group 5 includes multiple arc-shaped steel wire ropes arranged in sequence, and all the steel wire ropes pass through the connecting plate 4. The steel wire ropes are selected from the steel wire ropes used in existing steel wire rope shock absorbers and have non-linear stiffness and non-linear damping characteristics.
[0026] Each group of the steel wire rope wedge dampers 10 is composed of two steel wire rope wedge dampers 10 arranged side by side. The axes between adjacent groups of the steel wire rope wedge dampers 10 are perpendicular to each other, that is, the arc-shaped steel wire ropes in adjacent two steel wire rope wedge dampers 10 are perpendicular to each other, ensuring that the wedge damper can deform and move in four directions.
[0027] Bolting holes 1 are provided on the top plate 2. The equipment support 7 can be fixed to the bolting holes 1 on the top plate 2 by bolts, and then the column-type power equipment 8 is fixed to the equipment support 7, which is a conventional connection method. The bottom plate 3 is fixedly connected to the ground by bolts.
[0028] As Figure 6As shown, when in use, the strut-type electrical equipment 8 is fixed to the top plate 2 of the support through the equipment support 7. At this time, due to the self-weight of the equipment, the top plate 2 of the support will move downward, resulting in the downward movement of the wire rope wedge damper 10. The wire rope group 5, the downward pressing wedge block 62, and the restoring pressing plate 6 all deform, and a combined upward reaction force is generated. The wedge-shaped structural component and the wire rope jointly bear the gravity of the equipment, and the deformation is much smaller than that of the traditional wire rope damper. Under the action of an earthquake, the equipment will sway from side to side. At this time, the top plate 2 of the support will also sway from side to side and be accompanied by horizontal displacement. Therefore, each wire rope wedge damper 10 will be subjected to vertical and horizontal loads. The wedge-shaped structural component dissipates the energy in the vertical direction through the friction between the downward pressing wedge block 62 and the gap 63, and the wire rope dissipates energy through its own damping; the energy in the horizontal direction is dissipated by the mutual extrusion of the downward pressing wedge block 62 of the wedge-shaped structure and the elastic steel plate 61, and the wire rope dissipates energy through its own damping.
[0029] In the case of a strong earthquake, the two elastic steel plates 61 will yield due to excessive displacement, thus playing a buffering role in the energy transmitted by the earthquake to the upper structure and protecting the wire rope damper. Figure 8 As shown, this device can resist horizontal earthquakes under earthquake action, and the hysteresis curve will not be greatly affected, especially suitable for electrical equipment in high seismic intensity areas and high-altitude strong wind areas.
[0030] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.
Claims
1. A rocking type seismic isolation support for power equipment, comprising a support support installed on the ground, characterized in that: The support bearing comprises a top plate, a bottom plate and a wire rope splice damper located between the top plate and the bottom plate, the wire rope splice damper is provided with four groups in total, which are evenly distributed in four directions of front, back, left and right and fixedly arranged between the top plate and the bottom plate, the wire rope splice damper comprises a vibration-damping wire rope group, a recovery pressure plate and a downward pressure splice block, the vibration-damping wire rope group is arc-shaped and has a connecting plate on the top, the bottom end of the vibration-damping wire rope group is fixed on the mounting plate, the downward pressure splice block is fixed on the bottom of the connecting plate, the recovery pressure plate is fixed in the middle of the mounting plate and is located below the downward pressure splice block, the recovery pressure plate is composed of two elastic steel plates, a gap is provided in the middle of the two elastic steel plates, and the downward pressure splice block is slidably inserted in the gap; the connecting plate is fixedly connected to the top plate, and the mounting plate is fixedly connected to the bottom plate.
2. The rocking type seismic isolation support for power equipment according to claim 1, characterized in that: The tops of the opposite surfaces of the two elastic steel plates are both provided with protruding blocks, and the cross section of the downward pressing sharp wedge block is hourglass-shaped; the lower half of the downward pressing sharp wedge block is located below the protruding blocks.
3. The rocking type seismic isolation support for power equipment according to claim 1, characterized in that: The shock-absorbing steel wire rope group includes a plurality of arc-shaped steel wire ropes arranged in sequence, and the plurality of steel wire ropes all pass through the connecting plate.
4. The rocking type seismic isolation support for electric power equipment according to claim 1, characterized in that: Each group of the steel wire rope spigot dampers is composed of two steel wire rope spigot dampers arranged side by side, and the axes between two adjacent groups of the steel wire rope spigot dampers are perpendicular to each other.
5. The rocking type seismic isolation support for power equipment according to claim 1, characterized in that: The top plate is provided with bolt holes, and the bottom plate is fixedly connected to the ground by bolts.