Plate type lead damper

Abstract

The present invention discloses a plate-type lead damper, which comprises: a core plate, which is inserted in the middle of a lead block; a splint structure, which comprises splints symmetrically arranged on both sides of the lead block, wherein the splints are enclosed by a limit plate in the middle area corresponding to the lead block to form a lead block blocking space; a sealing structure, which is symmetrically arranged between the core plate and the splint at both ends of the lead block, wherein both ends of the splint are provided with an embedding groove for accommodating the sealing structure, wherein the sealing structure comprises a butterfly spring, a gasket and a sealing plate which are sequentially embedded in the embedding groove, and wherein the sealing plate is higher than the limit plate in a pressure-free state; a loading structure, which is symmetrically clamped on both sides of the splint structure, wherein the loading structure applies pre-pressure to the splint and the sealing structure, so that the limit plate and the sealing plate are pressed against the core plate. The present invention utilizes the splint structure and the loading structure to apply pressure to the lead block, and when the core plate moves laterally in the middle of the lead block, the extrusion and friction between the core plate and the lead block are utilized to dissipate energy, thereby increasing the extrusion friction area and improving the energy dissipation efficiency.

Description

Technical Field

[0001] The present invention relates to the field of earthquake resistance in building construction, and in particular to a plate-type lead damper. Background Art

[0002] The basic form of energy dissipation devices is various types of dampers. Lead dampers are metal yield dampers, and their damping material is metallic lead. Lead has a face-core cubic crystal structure, with numerous slip systems and slip directions, good plastic deformation capacity, and high flexibility and ductility. When deformed at room temperature, dynamic recovery and dynamic recrystallization occur simultaneously. Through recovery and recrystallization, strain hardening disappears, and the structure and properties of the lead return to their pre-deformation state. Therefore, no residual stress or fatigue occurs. Therefore, the performance of lead dampers will not degrade with long-term use, and they have the outstanding characteristic of a long service life. Furthermore, lead is very stable in the natural environment and will not be corroded by long-term use. Lead extrusion dampers use the plastic flow of lead under extrusion to generate damping to dissipate energy.

[0003] There are two main types of existing lead dampers, lead shear dampers and lead extrusion dampers.

[0004] Lead shear dampers dissipate energy through the shear yielding and plastic deformation of lead. Although lead is highly flexible and ductile, its yield strength is low, less than one-tenth that of steel. Therefore, compared to a mild steel damper, the same yield strength requires ten times more shear cross-section. Furthermore, the connection and fixing of lead to steel components is more difficult. Consequently, lead shear dampers generally have low efficiency and high costs.

[0005] A lead extrusion damper consists of three components. The lead is the core of the damper, providing energy dissipation. When the extrusion shaft, with its raised center section, is subjected to external forces, the raised section squeezes the lead, generating a damping force. The outer sleeve confines the lead within a confined space. When vibrations are transmitted to the damper, pushing the extrusion shaft back and forth, the lead within the sleeve undergoes plastic flow deformation, generating a damping force while simultaneously absorbing and dissipating the external energy. However, the lead extrusion damper dissipates energy only through the extrusion shaft's raised section squeezing and rubbing the lead during motion. The force-bearing area between the raised section and the lead is small, resulting in low efficiency. Furthermore, because the sealing layer between the outer sleeve and the extrusion shaft is located in the direction of the shaft's motion, the sealing layer bears a large force surface. If the seal between the outer sleeve and the extrusion shaft is not tightly coupled, lead leakage is likely to occur. Furthermore, the extrusion shaft's irregular shape requires lead molten and poured, and fabricated using a milling machine, making the process difficult and expensive. Summary of the Invention

[0006] In response to the defects and shortcomings in the prior art, the present invention provides a plate-type lead damper that can improve energy consumption efficiency, has good sealing effect, effectively prevents lead leakage, is simple to process and manufacture, and reduces production costs.

[0007] To solve the above problems, the present invention provides a solution: a plate-type lead damper, comprising:

[0008] The core plate is inserted in the middle of the lead block;

[0009] One side of the core plate extends out of the clamping plate structure and is connected to a first end, and the clamping plate structure is connected to a second end on a side away from the first end;

[0010] The plywood structure includes plywood symmetrically arranged on both sides of the lead block and parallel to the core plate, wherein the plywood is enclosed by a limiting plate in the middle area corresponding to the lead block to form a lead block blocking space closed on all sides;

[0011] A sealing structure is symmetrically arranged between the core plate and the clamping plate at both ends of the lead block, and an embedding groove for accommodating the sealing structure is provided at both ends of the clamping plate. The sealing structure includes a butterfly spring, a gasket and a sealing plate that are sequentially embedded in the embedding groove, and the sealing plate is higher than the limit plate in a pressure-free state;

[0012] A loading structure is symmetrically arranged on both sides of the clamping plate structure, and applies pre-pressure to the clamping plate and the sealing structure through the loading structure, so that the limiting plate and the sealing plate are pressed against the core plate;

[0013] The splints are in the shape of long strips, and the two splints are closed and connected by side panels along the two sides of the short sides;

[0014] The splint is provided with an L-shaped groove along the edge in the middle area corresponding to the lead block, the limiting plate is partially embedded in and fixed in the L-shaped groove, and the portion of the limiting plate that is higher than the L-shaped groove is against the core plate.

[0015] As a preferred embodiment of the present invention, both side surfaces of the core plate are milled flat.

[0016] As a preferred embodiment of the present invention, slender shallow grooves are opened in the middle area corresponding to the lead block on both sides of the core plate. The core plate is in the shape of a long strip, and the shallow grooves are along the short side direction of the core plate and perpendicular to the sliding direction of the lead block.

[0017] As a preferred embodiment of the present invention, the core plate is provided with first limiting blocks along the long side direction on both sides of the shallow groove, and the first limiting blocks abut against the outer side of the limiting plate adjacent to one side.

[0018] As a preferred embodiment of the present invention, second limiting blocks are symmetrically provided on the outer sides of the limiting plate on both sides of the clamping plate along the long side, and the embedding groove of the sealing structure is formed between the second limiting blocks and the limiting plate on the adjacent side.

[0019] As a preferred embodiment of the present invention, the loading structure includes a plurality of loading beams symmetrically arranged on both sides of the splint structure, the plurality of loading beams extending along the short side direction of the splint and both ends are connected and fixed by side pull plates, a high-strength screw for applying pre-pressure to the lead block and the sealing structure is provided on the loading beam in a direction perpendicular to the core plate, the loading beam is provided with holes for the high-strength screw to pass through and pre-welded nuts are welded corresponding to the holes, and the high-strength screw is screwed into the pre-welded nut.

[0020] As a preferred embodiment of the present invention, the plate-type lead damper also includes a pad structure, which is symmetrically arranged on both sides of the clamping plate structure and is provided with a high-strength flat gasket opposite to the loading end position of the loading structure, and the pad structure is symmetrically provided with stiffening ribs on both sides of the high-strength flat gasket.

[0021] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0022] The present invention utilizes a clamping plate structure and a loading mechanism to apply pressure to the lead block. When the core plate moves laterally within the lead block, energy is dissipated through compression and friction between the core plate and the lead block, increasing the extrusion and friction area and improving energy efficiency. L-shaped grooves and limit plates are provided on the clamping plate to enclose the lead block within the limit plates, preventing lead overflow. Furthermore, a multi-layered sealing structure (butterfly spring + gasket + polymer sealing plate) is provided at both ends of the lead block, replacing the original single-material sealing method at the end. This further effectively prevents lead overflow from the end and enhances the lead sealing effect.

[0023] The plate-type lead damper of the present invention has a simple structure and can be assembled with lead blocks and steel plates to perform cold processing and packaging of the lead, thus avoiding the problem of inconvenience in processing and manufacturing caused by heat treatment of the lead. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 Schematic diagram of the overall structure of the plate-type lead damper according to an embodiment of the present invention.

[0026] Figure 2 yes Figure 1 Cross-sectional view at point 1-1.

[0027] Figure 3 yes Figure 2 Schematic diagram of the loading structure.

[0028] Figure 4 yes Figure 3 Cross-sectional view at 2-2 in the middle.

[0029] Figure 5 Schematic diagram of a splint structure in an embodiment of the present invention (only a single splint structure is shown in the figure).

[0030] Figure 6 yes Figure 5 Schematic diagram of the structure of the splint.

[0031] Figure 7 yes Figure 6 Cross-sectional view at point 3-3.

[0032] Figure 8 yes Figure 5 Cross-sectional view at point 4-4.

[0033] Figure 9 yes Figure 5 Cross-sectional view at point 5-5.

[0034] Figure 10 Schematic diagram of the sealing structure in an embodiment of the present invention.

[0035] Figure 11 yes Figure 10 Schematic diagram of the exploded structure of the sealing structure.

[0036] Figure 12 Schematic diagram of the pad structure in an embodiment of the present invention.

[0037] Figure 13 yes Figure 12 Cross-sectional view at 6-6.

[0038] Figure 14 Schematic diagram of the structure of the core plate in an embodiment of the present invention.

[0039] Figure 15 yes Figure 14 Cross-sectional view at 7-7.

[0040] The corresponding relationship between the marks in the figure is as follows:

[0041] 1-first end; 2-second end; 3-core plate; 31-shallow groove; 32-first limit block; 4-lead block; 5-plywood; 51-limiting plate; 52-L-shaped groove; 53-second limit block; 54-embedded groove; 55-side plate; 56-opening spot welding fixation; 6-sealing structure; 61-butterfly spring; 62-gasket; 63-polymer sealing plate; 7-gasket structure; 71-stiffening rib; 72-high-strength flat gasket; 8-loading structure; 81-loading beam; 82-side pull plate; 83-high-strength screw; 84-ring gasket; 85-pre-welded nut; 86-end nut. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0043] See also Figure 1 and Figure 2 , is a plate-type lead damper provided by an embodiment of the present invention, whose main components include: a core plate 3, a lead block 4, a splint structure 5, a sealing structure 6, a pad structure 7 and a loading structure 8.

[0044] Among them, the core plate 3 can be made of steel plate, inserted between the upper and lower layers of lead blocks 4, and the core plate 3 and the lead blocks 4 can slide relative to each other; the core plate 3 has slender shallow grooves 31 on both sides of the core plate 3 in the middle area corresponding to the lead blocks 4. The core plate 3 is in the shape of a long strip. These slender shallow grooves 31 are opened along the short side direction of the core plate 3 and are perpendicular to the sliding direction of the lead blocks 4, which can further increase the sliding resistance between the lead blocks 4 and the core plate 3. The dimensions of the shallow grooves 31 can be: groove depth 0.5mm, width 3mm, groove net distance 1.5mm. Figure 14 and Figure 15 Furthermore, the core plate 3 is milled flat on both sides of the shallow groove 31 along the longitudinal direction, in order to reduce damage to the polymer sealing plate in contact with the portion during sliding.

[0045] In addition, the core plate 3 is symmetrically provided with first limit blocks 32 on both sides of the shallow groove 31 along the long side direction. The first limit block 32 is perpendicular to the surface of the core plate 3, one end extends to a short side of the core plate 3, and a certain distance is left between the other end and the other short side of the core plate 3. The distance between the first limit blocks 32 on both sides is consistent with the width of the lead block 4. The purpose is to limit the lead block 4 to slide only between the first limit blocks 32 on both sides along the long side direction of the core plate 3, and not along the short side direction of the core plate 3. Figure 14 and Figure 15 shown.

[0046] The polymer sealing plate 63 is a part of the sealing structure 6, and the polymer sealing plate 63 can be made of a suitable polymer sealing material. Figure 10 and Figure 11 As shown, the sealing structure 6 adopts a multi-layer stacking method, including a butterfly spring 61, a gasket 62 and a polymer sealing plate 63. Replacing the traditional single sealing material method of the lead damper end can further effectively prevent the lead chips generated during movement from overflowing from the end.

[0047] Specifically, the sealing structure 6 is symmetrically arranged between the core plate 3 and the plywood structure at both ends of the lead block 4. The plywood structure includes two plywoods 5 symmetrically arranged on both sides of the lead block 4 and parallel to the core plate 3. The plywood 5 is surrounded by a limit plate 51 in the middle area corresponding to the lead block 4 to form a closed lead block sealing space. Figure 5 、 Figure 8 and Figure 9 The plywood 5 is in a long strip shape, and the two plywood 5 are connected by a closed side plate 55 on both sides along the short side direction, as shown Figure 2 As shown, a space with open ends for accommodating lead blocks 4 is enclosed between the two plywood panels 5 and the two side panels 55. The core panel 3 is inserted into this space and positioned between the upper and lower layers of lead blocks 4. One end of the core panel 3 extends out of this space and is connected to a first end 1, which is used to connect to an external structure or component. The two plywood panels 5 are connected to a second end 2 on the side away from the first end 1. This second end 2 seals the end of the plywood 5 structure on this side, and the plywood structure is connected to another external structure or component through this second end 2, thus completing the installation of the plate-type lead damper of the present invention.

[0048] Furthermore, the clamping plate 5 is symmetrically provided with second limiting blocks 53 on both sides of the long side of the limiting plate 51. The second limiting blocks 53 are flush with the limiting plate 51. An embedding groove 54 is formed between the second limiting block 53 and the limiting plate 51 on the adjacent side. Figure 10 and Figure 11 As shown, the butterfly spring 61, gasket 62, and polymer sealing plate 63 of the sealing structure 6 are sequentially embedded in the embedding groove 54. In the non-pressure state, the polymer sealing plate 63 is higher than the limit plate 51. The loading structure applies pressure to the sealing structure, making the polymer sealing plate 63 flush with the limit plate 51. At this time, the butterfly spring 61 has a certain initial pressure. Even if the limit plate 51 is partially lifted by the lead block 4, the polymer sealing plate 63 can press the core plate 3 under the action of the butterfly spring, limiting the overflow of lead chips during movement. The number of sealing structures 6 in this embodiment is four, and they are symmetrically located between the core plate 3 and the clamping plate 5 at both ends of the two layers of lead blocks 4.

[0049] In addition, the splint 5 is provided with an L-shaped groove 52 along the edge in the middle area corresponding to the lead block 4. Figures 5 to 9 As shown, a limiting plate 51 is partially embedded and fixed in an L-shaped groove 52. The embedded portion of the limiting plate 51 is fixed to the groove wall of the L-shaped groove 52 by spot welding 56. The portion of the limiting plate 51 that protrudes from the L-shaped groove is used to abut against the core plate 3. The plywood structure uses a combination of L-shaped grooves and limiting plates on the side of the plywood, replacing the traditional single sealing material method on the side of the lead damper, which can better prevent lead chips from overflowing from the side.

[0050] The loading structure 8 is symmetrically clamped on both sides of the clamping structure, and the loading structure 8 applies pre-pressure to the clamping plate 5 and the sealing structure 6, so that the limit plate 51 and the polymer sealing plate 63 are pressed against the two side surfaces of the core plate 3. Figure 3 and Figure 4 As shown, the loading structure in this embodiment specifically includes a plurality of loading beams 81 symmetrically arranged on both sides of the splint structure. The plurality of loading beams 81 extend along the short side direction of the splint and both ends are connected and fixed by side pull plates 82. The setting of the side pull plates 82 makes the loading system have greater rigidity and can also prevent the loading beams 81 from tilting during the loading process.

[0051] Furthermore, a high-strength screw 83 for applying pre-pressure to the lead block 4 and the sealing structure 6 is provided on each loading beam 81 in a direction perpendicular to the core plate 3. Holes for the high-strength screw 83 to pass through are opened on the loading beam 81, and an annular gasket 84 and a pre-welded nut 85 are welded in sequence to the corresponding holes on the side of the loading beam 81 close to the core plate 3. The center holes of the annular gasket 84 and the pre-welded nut 85 are coaxial with the holes on the loading beam 81 and have similar sizes. The high-strength screw 83 is screwed into the pre-welded nut 85 one by one, and the head of the high-strength screw 82 faces outward, and the end of the threaded section is screwed with an end nut 86 after passing through the pre-welded nut 85 inward, and the end nut 86 is pressed against the pad structure 7 to apply pressure to the lead block and the sealing structure.

[0052] The loading beam 81 can be made of square steel pipe. During the assembly process, the pre-welded nut 85, the annular gasket 84 and the loading beam 81 are first welded and fixed respectively, and then the high-strength screw 83 is screwed into the pre-welded nut 85, and the end nut 86 is screwed into the high-strength screw 83. The end is plug welded and smoothed, and finally the above-mentioned welded loading beam is connected to the side pull plate 82.

[0053] Pad structure 7 as Figure 12 and Figure 13 As shown, high-strength flat washers 72, optional components of the plate-type lead damper of the present invention, are symmetrically positioned on either side of the clamping structure and opposite the loading end of the loading structure 8 (i.e., the high-strength screw 83). This prevents the high-strength screw 83 from causing local scratches on the backing plate, which could reduce the loading pressure. Furthermore, the backing plate structure 7 has two symmetrically welded stiffening ribs 71 on either side of the high-strength flat washers 72 to prevent the backing plate from bending.

[0054] When the plate type lead damper of the present invention is used, Figure 1 and Figure 2As shown, the plate-type damper of the present invention is installed by mounting the first end 1 on the core plate 3 to one component and the second end 2 on the sandwich structure to another component. When the plate-type damper is subjected to force, the first end 1 on the core plate and the second end 2 on the sandwich structure drive the sandwich structure and the core plate 3 to move relative to each other, and the lead block 4, the sandwich plates 5 sandwiched between the lead block 4, and the core plate 3 rub against each other, generating frictional energy.

[0055] In this embodiment, the core plate 3 and the sandwich plate 5 are both steel plates. By utilizing the high friction coefficient between the steel plate and the lead block, the plate-type lead damper of the present invention has a higher energy dissipation capacity.

[0056] The limiting plates and sealing structure on the splint can completely seal the sides and ends of the lead weight, preventing lead chips from spilling out during movement. The loading structure applies pressure to the sealing structure, aligning the polymer sealing plate 63 with the limiting plate 51. At this point, the butterfly spring 61 has a certain initial pressure. Even if the limiting plate 51 is partially lifted by the lead weight 4, the polymer sealing plate 63, under the action of the butterfly spring, can still press against the core plate 3, limiting the spillage of lead chips during movement.

[0057] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0058] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A plate-type lead damper, characterized in that: include: The core plate is inserted in the middle of the lead block; A clamping plate structure extends from one side of the core plate and is connected to a first end, and a second end is connected to a side of the clamping plate structure away from the first end; The plywood structure includes plywood symmetrically arranged on both sides of the lead block and parallel to the core plate, wherein the plywood is enclosed by a limiting plate in the middle area corresponding to the lead block to form a lead block blocking space closed on all sides; A sealing structure is symmetrically arranged between the core plate and the clamping plate at both ends of the lead block, and an embedding groove for accommodating the sealing structure is provided at both ends of the clamping plate. The sealing structure includes a butterfly spring, a gasket and a sealing plate that are sequentially embedded in the embedding groove, and the sealing plate is higher than the limit plate in a pressure-free state; A loading structure is symmetrically arranged on both sides of the clamping plate structure, and applies pre-pressure to the clamping plate and the sealing structure through the loading structure, so that the limiting plate and the sealing plate are pressed against the core plate; The splints are in the shape of long strips, and the two splints are closed and connected by side panels along the two sides of the short sides; The splint is provided with an L-shaped groove along the edge in the middle area corresponding to the lead block, the limiting plate is partially embedded in and fixed in the L-shaped groove, and the portion of the limiting plate that is higher than the L-shaped groove is against the core plate.

2. The plate type lead damper according to claim 1, characterized in that: The surfaces on both sides of the core plate are milled flat.

3. The plate type lead damper according to claim 1, characterized in that: The core plate has elongated shallow grooves in the middle area corresponding to the lead block on both sides. The core plate is in the shape of an elongated strip. The shallow grooves are along the short side of the core plate and perpendicular to the sliding direction of the lead block.

4. The plate type lead damper according to claim 3, characterized in that: The core plate is provided with first limiting blocks along the long side direction on both sides of the shallow groove, and the first limiting blocks abut against the outer side of the limiting plate adjacent to one side.

5. The plate type lead damper according to claim 1, characterized in that: Second limiting blocks are symmetrically provided on the outer sides of the limiting plate at both sides of the clamping plate along the long side, and the embedding groove of the sealing structure is formed between the second limiting blocks and the limiting plate on the adjacent side.

6. The plate type lead damper according to claim 1, characterized in that: The loading structure includes a plurality of loading beams symmetrically arranged on both sides of the splint structure, the plurality of loading beams extending along the short side direction of the splint and both ends are connected and fixed by side pull plates, a high-strength screw for applying pre-pressure to the lead block and the sealing structure is provided on the loading beam in a direction perpendicular to the core plate, the loading beam is provided with holes for the high-strength screw to pass through, and pre-welded nuts are welded corresponding to the holes, and the high-strength screw is screwed into the pre-welded nut.

7. The plate type lead damper according to claim 1, characterized in that It also includes a pad structure, which is symmetrically arranged on both sides of the clamping plate structure and is provided with a high-strength flat gasket opposite to the loading end position of the loading structure. The pad structure is symmetrically provided with stiffening ribs on both sides of the high-strength flat gasket.

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