CN116065717A

CN116065717A - Plate-type lead damper

Info

Publication number: CN116065717A
Application number: CN202310009079.3A
Authority: CN
Inventors: 戴轶苏; 邓文艳; 彪仿俊; 张煜; 赵忻
Original assignee: Shanghai Kunyi Seismic Damping Engineering Technology Co ltd
Current assignee: Shanghai Kunyi Seismic Damping Engineering Technology Co ltd
Priority date: 2023-01-04
Filing date: 2023-01-04
Publication date: 2023-05-05

Abstract

The invention discloses a plate-type lead damper, which comprises: the core plate is inserted in the middle of the lead block; the clamping plate structure comprises clamping plates symmetrically arranged on two sides of the lead block, and the clamping plates are enclosed by limit plates in the middle area corresponding to the lead block to form a lead block blocking space; the sealing structure is symmetrically arranged between the core plates at the two ends of the lead block and the clamping plates, two ends of the clamping plates are provided with embedded grooves for accommodating the sealing structure, the sealing structure comprises butterfly springs, gaskets and sealing plates which are sequentially embedded into the embedded grooves, and the sealing plates are higher than the limiting plates in a non-pressure state; the loading structure is symmetrically clamped at two sides of the clamping plate structure, and the loading structure applies pre-pressure to the clamping plate and the sealing structure, so that the limiting plate and the sealing plate are abutted against the core plate. According to the invention, the clamping plate structure and the loading structure are used for pressing the lead blocks, and when the core plate transversely moves in the middle of the lead blocks, the extrusion and friction between the core plate and the lead blocks are used for dissipating energy, so that the extrusion friction area is increased, and the energy dissipation efficiency is improved.

Description

Plate-type lead damper

Technical Field

The invention relates to the field of building construction earthquake resistance, in particular to a plate type lead damper.

Background

The basic form of the energy dissipation device is various dampers, the lead damper belongs to a metal yield damper, the damping material is metal lead, the crystal structure of the lead is a face-core cube, the slip system and the slip direction are more, the plastic deformation capability is good, the flexibility and the expansibility are higher, the deformation under the room temperature condition can simultaneously generate the processes of dynamic recovery and dynamic recrystallization, the strain hardening disappears through the recovery and the recrystallization, and the structure and the performance of the lead can be restored to the state before the deformation, so that the residual stress can not be generated and the fatigue can not occur. Therefore, the lead damper has the outstanding characteristics of long service life, and the performance of the lead damper is not degraded due to long-term use. In addition, lead is stable in natural environment, and cannot be corroded due to long-term use, and the lead extrusion damper consumes energy by utilizing damping generated by plastic flow of extruded lead.

The existing lead dampers mainly comprise two types, namely a lead shear damper and a lead extrusion damper.

The lead shear damper consumes energy through the shearing yielding shaping of lead. Lead has higher flexibility and malleability, but the yield strength of lead is lower and is only less than one tenth of that of steel, so that the same yield force as that of a mild steel damper needs more than ten times of shearing section; and the connection and fixation of lead and steel parts are difficult. Therefore, the lead shear damper is generally low in working efficiency and high in cost.

The lead extrusion damper consists of three parts, wherein lead is a core part of the damper which plays a role in energy dissipation, when an extrusion shaft with a convex middle part is acted by external force, the convex part of the extrusion shaft extrudes lead to generate damping force, and the outer sleeve seals the lead in a limited space. When vibration is transmitted to the damper, the extrusion shaft is pushed to reciprocate, and the lead in the sleeve is subjected to plastic flow deformation, so that damping force is generated, and the energy input from the outside is absorbed and consumed. However, the lead extrusion damper can only consume energy by extruding lead to rub the lead in motion through the convex part on the extrusion shaft, and the stress area between the convex part and the lead is small and the efficiency is low. In addition, as the sealing layer between the outer sleeve and the extrusion shaft is positioned in the movement direction of the movement shaft, the stress surface of the sealing layer is large, and lead leakage is very easy to occur once the sealing layer is combined with the outer sleeve and the extrusion shaft in an insufficiently tight way. Meanwhile, the extrusion shaft is special-shaped, so that lead melting and lead filling are needed, and the extrusion shaft is manufactured by a milling machine, so that the processing difficulty is high and the cost is high.

Disclosure of Invention

Aiming at the defects and shortcomings in the prior art, the invention provides the plate-type lead damper which can improve the energy consumption efficiency, has a good sealing effect, effectively prevents lead leakage, is simple to process and manufacture, and reduces the production cost.

In order to solve the problems, the scheme provided by the invention is as follows: a plate lead damper, comprising:

the core plate is inserted in the middle of the lead block;

the clamping plate structure comprises clamping plates which are symmetrically arranged on two sides of the lead block and are parallel to the core plate, and the clamping plates are surrounded by limit plates in the middle area corresponding to the lead block to form a lead block sealing space with the four sides being sealed;

the sealing structure is symmetrically arranged between the core plates at two ends of the lead block and the clamping plates, two ends of the clamping plates are provided with embedded grooves for accommodating the sealing structure, the sealing structure comprises a butterfly spring, a gasket and a sealing plate which are sequentially embedded into the embedded grooves, and the sealing plate is higher than the limiting plate in a non-pressure state;

the loading structure is symmetrically clamped on two sides of the clamping plate structure, and pre-pressure is applied to the clamping plate and the sealing structure through the loading structure, so that the limiting plate and the sealing plate are abutted to the core plate.

As a preferred embodiment of the invention, the core plate has one side from which extends the clamping plate structure and is connected with a first end, and the clamping plate structure has a second end connected with a side remote from the first end.

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

As a preferred embodiment of the present invention, the two sides of the core plate are provided with elongated shallow grooves in the middle area corresponding to the lead block, the core plate is in a long strip shape, and the shallow grooves are along the short side direction of the core plate and are perpendicular to the sliding direction of the lead block.

As a preferred embodiment of the invention, the core plate is provided with first limiting blocks along the long side direction at two sides of the shallow groove, and the first limiting blocks are propped against the outer sides of the limiting plates close to one side.

As a preferred embodiment of the present invention, the clamping plates have a long strip shape, and two sides of the clamping plates along the short side direction are closed and connected by side plates.

As a preferred embodiment of the invention, the clamping plate is provided with an L-shaped groove along the edge of the middle area corresponding to the lead block, the limiting plate is partially embedded and fixed in the L-shaped groove, and the part of the limiting plate higher than the L-shaped groove is propped against the core plate.

As a preferred embodiment of the invention, two sides of the clamping plate along the long side direction are symmetrically provided with second limiting blocks at the outer sides of the limiting plates, and the embedded groove of the sealing structure is formed between the second limiting blocks and the limiting plates at the adjacent side.

As a preferred embodiment of the invention, the loading structure comprises a plurality of loading cross beams symmetrically arranged at two sides of the clamping plate structure, the loading cross beams extend along the short side direction of the clamping plate and are connected and fixed at two end parts through side pull plates, a high-strength screw rod for applying pre-compression to the lead block and the sealing structure is arranged on the loading cross beams along the direction vertical to the core plate, a hole for the high-strength screw rod to penetrate is formed in the loading cross beams, a pre-welding nut is welded corresponding to the hole, and the high-strength screw rod is screwed with the pre-welding nut.

As the preferred embodiment of the invention, the plate-type lead damper further comprises a backing plate structure, wherein the backing plate structure is symmetrically arranged on two sides of the clamping plate structure and provided with a high-strength flat gasket opposite to the loading end of the loading structure, and stiffening ribs are symmetrically arranged on two sides of the high-strength flat gasket by the backing plate structure.

By adopting the technical scheme, the invention has the following beneficial effects:

according to the invention, the clamping plate structure and the loading structure are used for pressing the lead blocks, and when the core plate transversely moves in the middle of the lead blocks, the extrusion and friction between the core plate and the lead blocks are used for dissipating energy, so that the extrusion friction area is increased, and the energy dissipation efficiency is improved. The L-shaped groove and the limiting plate are arranged on the clamping plate, so that the lead block is sealed in the limiting plate, and lead overflow can be prevented; meanwhile, the lead block is provided with a multi-layer overlapped sealing structure (a belleville spring, a gasket and a high polymer sealing plate) at two ends, and the mode of replacing the single sealing material of the original end head can further effectively prevent lead from overflowing from the end head, so that the lead sealing effect is improved.

The plate-type lead damper is simple in structure, can be used for cold processing and packaging of lead in a lead block and steel plate assembling mode, and avoids the problem of inconvenient processing and manufacturing caused by heat treatment of lead.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of the overall structure of a plate type lead damper according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken at 1-1 of FIG. 1.

Fig. 3 is a schematic view of the loading structure of fig. 2.

FIG. 4 is a cross-sectional view taken at 2-2 of FIG. 3.

Fig. 5 is a schematic illustration of a cleat configuration in an embodiment of the present invention (only a single cleat configuration is shown).

Fig. 6 is a schematic view of the structure of the splint of fig. 5.

FIG. 7 is a cross-sectional view taken at 3-3 of FIG. 6.

Fig. 8 is a cross-sectional view taken at 4-4 of fig. 5.

Fig. 9 is a cross-sectional view taken at 5-5 of fig. 5.

Fig. 10 is a schematic view of a sealing structure in an embodiment of the invention.

Fig. 11 is an exploded view of the sealing structure of fig. 10.

Fig. 12 is a schematic view of a pad structure in an embodiment of the invention.

FIG. 13 is a cross-sectional view taken at 6-6 of FIG. 12.

Fig. 14 is a schematic structural view of a core plate in an embodiment of the present invention.

Fig. 15 is a cross-sectional view taken at 7-7 of fig. 14.

The label correspondence is as follows:

1-a first end; 2-a second end; 3-core plate; 31-shallow grooves; 32-a first limiting block; 4-lead blocks; 5-clamping plates; 51-limiting plates; a 52-L-shaped groove; 53-a second limiting block; 54-an embedded groove; 55-side plates; 56-spot welding and fixing; 6-sealing structure; 61-belleville springs; 62-a gasket; 63-a polymeric seal plate; 7-backing plate structure; 71-stiffening ribs; 72-high-strength plain gaskets; 8-loading structure; 81-loading a cross beam; 82-side pull plates; 83-high-strength screw; 84-ring gaskets; 85-pre-welding nuts; 86-end nut.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 and 2, the main components of the plate-type lead damper provided by the embodiment of the invention include: core plate 3, lead block 4, clamping plate structure 5, sealing structure 6, backing plate structure 7 and loading structure 8.

Wherein, the core plate 3 can be made of steel plates and is inserted between the upper and lower lead blocks 4, and the core plate 3 and the lead blocks 4 can slide relatively; the two sides of the core plate 3 are provided with elongated shallow grooves 31 in the middle area corresponding to the lead block 4, the core plate 3 is in a strip shape, the elongated shallow grooves 31 are arranged along the short side direction of the core plate 3 and are perpendicular to the sliding direction of the lead block 4, the sliding resistance between the lead block 4 and the core plate 3 can be further increased, and the size of the shallow grooves 31 can be as follows: the groove depth was 0.5mm, the width was 3mm, and the groove clearance was 1.5mm. As shown in fig. 14 and 15. Further, the core plate 3 is entirely milled in the longitudinal direction at both side portions of the shallow groove 31 region, in order to reduce damage to the polymer sealing plate in contact with the portion during sliding.

In addition, the core plate 3 is symmetrically provided with first limiting blocks 32 along the long side direction at two sides of the shallow groove 31, the first limiting blocks 32 are perpendicular to the surface of the core plate 3, one end of each first limiting block extends to one short side of the core plate 3, a certain interval is reserved between the other end of each first limiting block and the other short side of the core plate 3, the interval between the first limiting blocks 32 at two sides is consistent with the width of the lead block 4, and the purpose is to limit the lead block 4 to slide between the first limiting blocks 32 at two sides only along the long side direction of the core plate 3, but not slide along the short side direction of the core plate 3, as shown in fig. 14 and 15.

The polymer sealing plate 63 is a part of the sealing structure 6, and the polymer sealing plate 63 may be made of a suitable polymer sealing material. As shown in fig. 10 and 11, the sealing structure 6 adopts a multilayer lamination method, and includes a belleville spring 61, a spacer 62, and a polymer sealing plate 63 stacked in this order. The single sealing material mode of the traditional lead damper end head is replaced, and lead scraps generated in the movement process can be further effectively prevented from overflowing from the end head.

Specifically, the sealing structure 6 is symmetrically arranged between the core plate 3 and the clamping plate structure at two ends of the lead block 4. The clamping plate structure comprises two clamping plates 5 which are symmetrically arranged at two sides of the lead block 4 and are parallel to the core plate 3, and the clamping plates 5 are surrounded by a limiting plate 51 in the middle area corresponding to the lead block 4 to form a lead block sealing space with the four sides being closed, as shown in fig. 5, 8 and 9; the clamping plates 5 are in a strip shape, and two sides of the two clamping plates 5 along the short side direction are in closed connection through the side plates 55, as shown in fig. 2, so that a space for accommodating one two ends of the lead block 4 is formed between the two clamping plates 5 and the two side plates 55 in a surrounding manner, and the core plate 3 is inserted in the space and is positioned between the upper lead block 4 and the lower lead block 4. One end of the core plate 3 extends out of the space and is connected to a first end 1, the first end 1 being intended for connection with an external building or component; two clamping plates 5 are connected to one second end 2 at a side remote from the first end 1 and the side end of the clamping plate 5 structure is sealed by the second end 2, and the clamping plate structure is connected to another external building or member by the second end 2, thereby completing the installation of the plate-type lead damper of the present invention.

Further, the two sides of the clamping plate 5 along the long side direction are symmetrically provided with the second limiting block 53 at the outer side of the limiting plate 51, the second limiting block 53 is flush with the limiting plate 51 in height, an embedded groove 54 is formed between the second limiting block 53 and the limiting plate 51 adjacent to one side, as shown in fig. 10 and 11, the belleville spring 61, the gasket 62 and the macromolecule sealing plate 63 of the sealing structure 6 are sequentially embedded into the embedded groove 54, the macromolecule sealing plate 63 is higher than the limiting plate 51 in a pressureless state, pressure is applied to the sealing structure through the loading structure, so that the macromolecule sealing plate 63 is flush with the limiting plate 51, at the moment, the belleville spring 61 has a certain initial pressure, even if the limiting plate 51 is locally jacked up by the lead block 4, the macromolecule sealing plate 63 can also compress the core plate 3 under the action of the belleville spring, and lead scraps are overflowed in the limiting movement process. The number of the sealing structures 6 in the embodiment is four, and the sealing structures are respectively and symmetrically arranged between the core plates 3 and the clamping plates 5 at two ends of the two lead blocks 4.

In addition, the clamping plate 5 is provided with an L-shaped groove 52 along the edge of the middle area corresponding to the lead block 4, as shown in fig. 5 to 9, the limiting plate 51 is partially embedded and fixed in the L-shaped groove 52, the embedded part of the limiting plate 51 and the groove wall of the L-shaped groove 52 are fixed by spot welding with holes 56, and the part of the limiting plate 51 higher than the L-shaped groove is used for propping against the core plate 3. The side edge of the clamping plate in the clamping plate structure adopts a combined mode of the L-shaped groove and the limiting plate to replace the single sealing material mode of the side edge of the traditional lead damper, so that lead scraps can be better restrained from overflowing from the side edge.

The loading structure 8 is symmetrically clamped at two sides of the clamping plate structure, and the loading structure 8 applies pre-compression force to the clamping plate 5 and the sealing structure 6, so that the limiting plate 51 and the high polymer sealing plate 63 are abutted against two side surfaces of the core plate 3. As shown in fig. 3 and fig. 4, the loading structure in this embodiment specifically includes a plurality of loading beams 81 symmetrically disposed on two sides of the clamping plate structure, the plurality of loading beams 81 extend along the short side direction of the clamping plate, and two end portions are connected and fixed through a side pull plate 82, and the side pull plate 82 is arranged to make the loading system have greater rigidity, so that the loading beams 81 can be prevented from tilting in the loading process.

Further, a high-strength screw 83 for applying pre-pressure to the lead block 4 and the sealing structure 6 is arranged on each loading cross beam 81 along the direction perpendicular to the core plate 3, holes penetrating through the high-strength screw 83 are formed in the loading cross beams 81, annular gaskets 84 and pre-welding nuts 85 are sequentially welded on one side, close to the core plate 3, of the loading cross beams 81 corresponding to the holes, central holes of the annular gaskets 84 and the pre-welding nuts 85 are coaxial with the holes in the loading cross beams 81 and are equivalent in size, the high-strength screw 83 is correspondingly screwed into the pre-welding nuts 85 one by one, the head of the high-strength screw 82 faces outwards, end nuts 86 are screwed into the threaded sections after the end portions penetrate through the pre-welding nuts 85 inwards, the end nuts 86 abut against the backing plate structure 7, and pressure is applied to the lead block and the sealing structure.

The loading cross beam 81 can be made of square steel pipes, in the assembly process, the pre-welded nuts 85, the annular gaskets 84 and the loading cross beam 81 are welded and fixed respectively, then the high-strength screw 83 is screwed into the pre-welded nuts 85, the end nuts 86 are screwed into the high-strength screw 83 again, the end plugs are welded and ground flat, and finally the welded loading cross beam is connected to the side pull plates 82.

As shown in fig. 12 and 13, the backing plate structure 7 is an optional component of the plate-type lead damper of the present invention, and is symmetrically disposed on two sides of the clamping plate structure and provided with a high-strength flat gasket 72 opposite to the loading end (i.e. the high-strength screw 83) of the loading structure 8, so as to prevent the high-strength screw 83 from generating local scratches on the backing plate and reducing the loading pressure. In addition, the two stiffening ribs 71 are symmetrically welded on the two sides of the high-strength flat gasket 72 of the backing plate structure 7, so that the backing plate can be prevented from bending.

When the plate-type lead damper is used, as shown in fig. 1 and 2, the plate-type damper is mounted by mounting the first end head 1 on the core plate 3 side on one member and the second end head 2 on the clamping plate structure side on the other member. When the plate damper is stressed, the first end head 1 at the core plate side and the second end head 2 at the clamping plate structure side drive the clamping plate structure and the core plate 3 to move relatively, and the lead block 4, the clamping plates 5 clamped at the two sides of the lead block 4 and the core plate 3 rub with each other to generate friction energy consumption.

In the embodiment, the core plate 3 and the clamping plate 5 are both steel plates, and the high energy consumption capability of the plate-type lead damper is realized by utilizing the characteristic of high friction coefficient between the steel plates and the lead blocks.

The side edges and the end parts of the lead blocks can be completely sealed by using the limiting plates and the sealing structures on the clamping plates, so that lead scraps are prevented from overflowing in the movement process. The loading structure applies pressure to the sealing structure, so that the high polymer sealing plate 63 is flush with the limiting plate 51, the butterfly spring 61 has certain initial pressure at the moment, and even if the limiting plate 51 is locally jacked up by the lead block 4, the high polymer sealing plate 63 can also press the core plate 3 under the action of the butterfly spring, and lead scraps are prevented from overflowing in the movement process.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A plate-type lead damper, comprising:

the core plate is inserted in the middle of the lead block;

2. The plate lead damper of claim 1, wherein one side of the core plate extends beyond the clamping plate structure and is connected with a first end, and wherein the clamping plate structure is connected with a second end on a side remote from the first end.

3. The plate lead damper of claim 1, wherein the core plate is milled flat on both side surfaces.

4. The plate type lead damper according to claim 1, wherein the core plate is provided with elongated shallow grooves on both sides thereof in a middle area corresponding to the lead block, the core plate is in a long strip shape, and the shallow grooves are along a short side direction of the core plate and perpendicular to a sliding direction of the lead block.

5. The plate type lead damper according to claim 4, wherein the core plate is provided with first stoppers on both sides of the shallow groove in a long side direction, and the first stoppers abut against the outer sides of the stopper plates on the adjacent side.

6. The plate type lead damper according to claim 1, wherein the clamping plates are in a long strip shape, and both sides of the two clamping plates in the short side direction are closely connected by side plates.

7. The plate-type lead damper according to claim 6, wherein the clamping plate is provided with an L-shaped groove along the edge of the middle area corresponding to the lead block, the limiting plate is partially embedded and fixed in the L-shaped groove, and the part of the limiting plate higher than the L-shaped groove is propped against the core plate.

8. The plate type lead damper according to claim 7, wherein second limiting blocks are symmetrically arranged on the outer sides of the limiting plates on two sides of the clamping plates in the long-side direction, and the embedded grooves of the sealing structure are formed between the second limiting blocks and the limiting plates on the adjacent side.

9. The plate type lead damper according to claim 6, wherein the loading structure comprises a plurality of loading cross beams symmetrically arranged on two sides of the clamping plate structure, the loading cross beams extend along the short side direction of the clamping plate and are connected and fixed through side pull plates at two end parts, a high-strength screw rod for applying pre-compression to the lead block and the sealing structure is arranged on the loading cross beams along the direction perpendicular to the core plate, a hole for the high-strength screw rod to penetrate through is formed in the loading cross beams, a pre-welding nut is welded corresponding to the hole, and the high-strength screw rod is screwed into the pre-welding nut.

10. The plate-type lead damper according to claim 1, further comprising a backing plate structure symmetrically arranged on two sides of the clamping plate structure and provided with high-strength flat gaskets opposite to loading ends of the loading structure, wherein stiffening ribs are symmetrically arranged on two sides of the high-strength flat gaskets by the backing plate structure.