CN210288751U

CN210288751U - Wooden sliding friction damper with variable damping force

Info

Publication number: CN210288751U
Application number: CN201920954105.9U
Authority: CN
Inventors: 谢启芳; 王凡; 张保壮; 李胜英
Original assignee: Xian University of Architecture and Technology
Current assignee: Xian University of Architecture and Technology
Priority date: 2019-06-24
Filing date: 2019-06-24
Publication date: 2020-04-10
Anticipated expiration: 2029-06-24

Abstract

The utility model discloses a wooden sliding friction damper with variable damping force, which comprises two cover plates, two sliding plates and at least two elastic fixing pieces; the two sliding plates are arranged between the two cover plates, and the surfaces of the two sliding plates which are contacted with each other are inclined surfaces; the two elastic fixing pieces respectively keep the two cover plates connected with the two sliding plates, so that the action lines of the fixing pieces are inclined relative to the sliding surfaces kept connected; the utility model discloses structural design is simple reasonable, utilizes inclined surface and resilient mounting's combined action, can provide different damping force for the attenuator under the displacement condition of difference to make the attenuator demonstrate superior anti-seismic performance.

Description

Wooden sliding friction damper with variable damping force

Technical Field

The invention belongs to the technical field of civil engineering structure shock absorption, and particularly relates to a wooden sliding friction damper with variable damping force.

Background

The damping energy-consuming damper with excellent building structure has become one of the hot spots of the research in the field of earthquake resistance of world engineering. The direction of this research both at home and abroad is mostly focused on energy consuming connectors that allow movement of buildings while ensuring that the buildings remain intact and avoid permanent damage. In the construction industry, structural connector solutions that can be used to counter and attenuate seismic forces are based on the yielding/failure of some of the components in the connector to achieve the ductility and energy dissipation capabilities required of the structure. The passive damping and dissipating devices commonly used in the building structures at the present stage can be roughly classified into the following types: viscous dampers, metal dampers, viscoelastic dampers, and friction dampers. The mechanism by which sliding friction plates dissipate energy through friction between the plates has proven to be an effective component in passive devices. The friction damper consumes energy through friction between materials, so that the main body structure is protected from being damaged. And most buildings can have larger participating displacement after earthquake, and the use of an additional system for reducing the residual displacement is generally more expensive, the design of a general additional structure is more complex, and the damping effect is not ideal.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a variable damping force wooden sliding friction damper which can reduce the participating displacement as much as possible and has good vibration isolation effect, simple design, flexible installation and good economic benefit.

In order to achieve the purpose, the invention adopts the technical scheme that:

a wooden sliding friction damper with variable damping force comprises a right cover plate 3, a left cover plate 4, a rear sliding plate 1, a front sliding plate 2, a first elastic fixing piece 5 and a second elastic fixing piece 6, wherein the left side surface of the right cover plate 3 and the right side surface of the left cover plate 4 are respectively provided with at least two concave parts, the right cover plate 3 and the left cover plate 4 are symmetrically arranged, the front end surface of the rear sliding plate 1 is opposite to the rear end surface of the front sliding plate 2, the left side surface and the right side surface of the rear sliding plate 1 and the front sliding plate 2 are respectively provided with a symmetrical convex part, the rear sliding plate 1 and the front sliding plate 2 are arranged between the right cover plate 3 and the left cover plate 4, the convex parts correspond to the concave parts, the first elastic fixing piece 5 is connected with the left cover plate 4, the rear sliding plate 1 and the right cover plate 3 in a penetrating manner, the second elastic fixing piece 6 is connected with the left cover, the right and

left cover plates

3 and 4 are held in contact with the rear and

front slide plates

1 and 2 such that the lines of action of the first and second

elastic fixing members

5 and 6 are inclined with respect to the sliding surfaces held in contact.

The right cover plate 3 and the left cover plate 4, the rear sliding plate 1 and the front sliding plate 2 are made of wood with the same or different materials and good properties.

The novel bolt structure is characterized in that a first bolt hole and a second bolt hole which are located at the same height and are horizontal are formed in the right cover plate 3, a third bolt hole and a fourth bolt hole are formed in the left cover plate 4, a first long circular hole is formed in the rear sliding plate 1, a second long circular hole is formed in the front sliding plate 2, the first bolt hole, the third bolt hole and the first long circular hole are located on the same straight line, the second bolt hole, the fourth bolt hole and the second long circular hole are located on the same straight line, the first elastic fixing piece 5 penetrates through the first bolt hole, the first long circular hole and the third bolt hole to connect the right cover plate 3, the rear sliding plate 1 and the left cover plate 4, and the second elastic fixing piece 6 penetrates through the second bolt hole, the second long circular hole and the fourth bolt hole to connect the right cover plate 3, the front.

The right flank of right side apron 3 is provided with right reinforcing plate 31, and right reinforcing plate 31 covers bolt hole one and bolt hole two, and the left flank of left side apron 4 is provided with left reinforcing plate 41, and left reinforcing plate 41 covers bolt hole three and bolt hole four, left reinforcing plate 41 and elastic fixing piece two 6 all run through left reinforcing plate 41 and right reinforcing plate 31.

The right reinforcing plate 31 is arranged along the length direction or the width direction of the right reinforcing plate 31, and the left reinforcing plate 41 is arranged along the length direction or the width direction of the left cover plate 4, so that the stress concentration on the cover plate can be placed.

The upper end face, the lower end face, the front end face and the rear end face of the rear sliding plate 1 are provided with a first framed connecting part 11 in a surrounding mode, the upper end face, the lower end face, the front end face and the rear end face of the front sliding plate 2 are provided with a second framed connecting part 21 in a surrounding mode, the first connecting part 11 and the second connecting part 21 are made of common carbon steel or aluminum alloy materials, the first connecting part 11 is connected with a first part, the second connecting part 21 is connected with a second part, the first part is located behind the rear sliding plate 1, and the second part.

The first elastic fixing piece 5 and the second elastic fixing piece 6 are identical in structure and both consist of a fastening piece and at least one deviation part, and the deviation part is positioned between the elastic fastening piece and the cover plate to apply a deviation force so as to generate elastic holding of the related elastic fixing pieces.

The biasing member is a spring selected from at least one of: disc spring, spiral spring or leaf spring etc. the fastener adopts high strength bolt.

The left side surface of the right cover plate 3 and the right side surface of the left cover plate 4 are in the shapes of triangular wave, trapezoidal wave, arc wave and the like along the front-back direction.

The rear and front

sliding plates

1 and 2 have a shape in the front-rear direction complementary to the left side surface of the right cover plate 3 and the right side surface of the left cover plate 4.

Compared with the prior art, the damper has simple and reasonable structural design, and the combined action of the inclined surface and the deflection part is utilized, so that the damper has good anti-seismic performance, the residual displacement of the structure can be reduced, and the requirements of 'small-earthquake damage prevention, medium-earthquake repairable and large-earthquake collapse' of structural building design are met.

Drawings

In order to more intuitively explain the technical solution of the present invention, the drawings are briefly introduced below, and it is obvious that the drawings described below are only some embodiments of the present invention, and all other embodiments obtained by those skilled in the art without inventive efforts, all of which are applicable to other related technical fields, directly or indirectly, and all of which are made by the equivalent structures of the present invention, should fall within the protection scope of the present invention.

FIG. 1 is a schematic three-dimensional structure of the present invention.

Fig. 2 is a schematic front view of the present invention.

Fig. 3 is a schematic view of the structure of the sliding member of the present invention.

Fig. 4 is a schematic view of the structure of the connecting part of the present invention.

Fig. 5 is a schematic view of the sliding panel structure of the present invention.

Fig. 6 is a schematic view of the structure of the fixing member of the present invention.

Fig. 7 is a schematic view of the cover plate structure of the present invention.

FIG. 8 is a schematic diagram of a stiffener structure according to the present invention.

Fig. 9 is a schematic view of the structure of the elastic fixing member of the present invention.

FIG. 10 is a schematic view of a fastener construction.

Fig. 11 is a schematic view of the structure of the deflecting unit.

Illustration of the drawings: since each of the components in the present invention is the same two, only one of the components is shown and the other is omitted.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the drawings and examples.

As shown in fig. 1 and 2, the damping force variable wooden sliding friction damper of the present invention comprises a right cover plate 3 and a left cover plate 4, a rear sliding plate 1 and a front sliding plate 2, and at least two elastic fixing members, i.e. a first elastic fixing member 5 and a second elastic fixing member 6; the rear sliding plate 1 and the front sliding plate 2 are arranged between the right cover plate 3 and the left cover plate 4, the front end surface of the rear sliding plate 1 is opposite to the rear end surface of the front sliding plate 2, the contact surface of the rear sliding plate 1, the right cover plate 3 and the left cover plate 4 is an inclined surface, and the contact surface of the front sliding plate 2, the right cover plate 3 and the left cover plate 4 is an inclined surface.

The front slide plate 2, the rear slide plate 1, the right cover plate 3, and the left cover plate 4 provide a plurality of mutually inclined surfaces, and the shapes of the inclined surfaces may be triangular wave, trapezoidal wave, arc wave, or the like.

Wherein the rear slide plate 1 and the front slide plate 2 present a plurality of inclined surfaces of a first kind in a wave shape and the right and

left cover plates

3 and 4 present a plurality of complementary inclined surfaces in a wave shape so as to be combined with the mentioned inclined surfaces of a first kind.

For example, the left side surface of the right cover plate 3 and the right side surface of the left cover plate 4 are provided with at least two recessed portions, the right cover plate 3 and the left cover plate 4 are symmetrically arranged, and the left and right side surfaces of the rear sliding plate 1 and the front sliding plate 2 are provided with symmetrical protruding portions, which correspond to the recessed portions, as shown in fig. 3 and 5.

As shown in fig. 6, 7 and 8, a first bolt hole and a second bolt hole which are horizontally arranged at the same height are formed in the right cover plate 3, a third bolt hole and a fourth bolt hole are formed in the left cover plate 4, a first oblong hole is formed in the rear sliding plate 1, a second oblong hole is formed in the front sliding plate 2, the first bolt hole, the third bolt hole and the first oblong hole are positioned on the same straight line, the second bolt hole, the fourth bolt hole and the second oblong hole are positioned on the same straight line, a right reinforcing plate 31 is arranged on the right side surface of the right cover plate 3, the first bolt hole and the second bolt hole are covered by the right reinforcing plate 31, corresponding through holes are left in the first bolt hole and the second bolt hole, a left reinforcing plate 41 is arranged on the left side surface of the left cover plate 4, the first left reinforcing plate 41 covers the third bolt hole and the fourth bolt hole, corresponding through holes are left in the first bolt hole, a first elastic fixing member 5 penetrates through, The right cover plate 3, the rear sliding plate 1, the left cover plate 4 and the left reinforcing plate 41 are connected, and the elastic fixing piece II 6 penetrates through the bolt hole II, the long round hole II and the bolt hole IV to connect the right reinforcing plate 31, the right cover plate 3, the front sliding plate 2, the left cover plate 4 and the left reinforcing plate 41.

The right reinforcing plate 31 may be provided in both the length or width directions of the right reinforcing plate 31, and the left reinforcing plate 41 may be provided in both the length or width directions of the left cover plate 4, in order to place stress concentration on the cover plate.

The right cover plate 3 and the left cover plate 4, and the rear sliding plate 1 and the front sliding plate 2 are made of wood with the same or different materials and good properties.

Referring to fig. 3 and 4, the upper, lower, front and rear four end surfaces of the rear sliding plate 1 are surrounded by the first framed connecting members 11, the upper, lower, front and rear four end surfaces of the front sliding plate 2 are surrounded by the second framed connecting members 21, the first connecting members 11 and the second connecting members 21 are made of common carbon steel or aluminum alloy, the first connecting members 11 are connected to the first member, the second connecting members 21 are connected to the second member, the first member is located behind the rear sliding plate 1, and the second member is located in front of the front sliding plate 2.

Referring to fig. 9, 10 and 11, the first elastic fixing member 5 and the second elastic fixing member 6 have the same structure, and are each composed of a fastening member and at least one biasing member, the fastening member is a high-strength bolt, and the biasing member is a spring selected from at least one of the following: disc spring, spiral spring or leaf spring etc. the fastener adopts high strength bolt. A biasing member is positioned between the resilient fastener and the cover plate to apply a biasing force to produce resilient retention of the associated resilient mount.

The principle of the invention is as follows: when the structure is subjected to earthquake, the two structures or components connected by the invention generate relative displacement, the sliding plate and the cover plate generate relative sliding, energy is consumed in the friction process, the cover plate generates transverse expansion displacement due to the existence of the inclined surface, and the deflection part of the elastic fixing piece generates deflection pressure on the inclined surface, so that the damping force is increased, and meanwhile, the restoring force for returning the sliding plate to the original displacement is provided. In the process, a damping force is provided which increases with the relative displacement, and a restoring force which reduces the residual displacement.

The invention has simple and reasonable structural design, and can provide different damping forces for the damper under different displacement conditions by utilizing the combined action of the inclined surface and the elastic fixing piece, thereby leading the damper to show excellent anti-seismic performance.

Claims

1. The wooden sliding friction damper with variable damping force is characterized by comprising a right cover plate (3), a left cover plate (4), a rear sliding plate (1), a front sliding plate (2), a first elastic fixing piece (5) and a second elastic fixing piece (6) which are at least two elastic fixing pieces, wherein the left side surface of the right cover plate (3) and the right side surface of the left cover plate (4) are respectively provided with at least two sunken parts, the right cover plate (3) and the left cover plate (4) are symmetrically arranged, the front end surface of the rear sliding plate (1) is opposite to the rear end surface of the front sliding plate (2), the left side surface and the right side surface of the rear sliding plate (1) and the front sliding plate (2) are respectively provided with symmetrical convex parts, the rear sliding plate (1) and the front sliding plate (2) are arranged between the right cover plate (3) and the left cover plate (4), the convex parts correspond to the sunken parts, and the first elastic fixing piece (5) penetrates through the left cover plate (4), The rear sliding plate (1) and the right cover plate (3), and the elastic fixing piece II (6) is connected with the left cover plate (4), the front sliding plate (2) and the right cover plate (3) in a penetrating mode.

2. A variable damping force wooden sliding friction damper according to claim 1, characterized in that the right and left cover plates (3, 4), the rear sliding plate (1) and the front sliding plate (2) are made of wood of the same or different material.

3. The variable damping force wood sliding friction damper according to claim 1, wherein the right cover plate (3) is provided with a first bolt hole and a second bolt hole at the same level, the left cover plate (4) is provided with a third bolt hole and a fourth bolt hole, the rear sliding plate (1) is provided with a first oblong hole, the front sliding plate (2) is provided with a second oblong hole, the first bolt hole, the third bolt hole and the first oblong hole are positioned on the same straight line, the second bolt hole, the fourth bolt hole and the second oblong hole are positioned on the same straight line, the first elastic fixing member (5) passes through the first bolt hole, the first oblong hole and the third bolt hole to connect the right cover plate (3), the rear sliding plate (1) and the left cover plate (4), and the second elastic fixing member (6) passes through the second bolt hole, the second oblong hole, The bolt hole IV connects the right cover plate (3), the front sliding plate (2) and the left cover plate (4).

4. A variable damping force wooden sliding friction damper as claimed in claim 3, wherein the right side of the right cover plate (3) is provided with a right reinforcing plate (31), the right reinforcing plate (31) covers the first bolt hole and the second bolt hole, the left side of the left cover plate (4) is provided with a left reinforcing plate (41), the left reinforcing plate (41) covers the third bolt hole and the fourth bolt hole, and the first elastic fixing member (5) and the second elastic fixing member (6) both penetrate through the left reinforcing plate (41) and the right reinforcing plate (31).

5. A variable damping force wooden sliding friction damper as claimed in claim 4, characterized in that said right reinforcing plate (31) is provided along both the length or width direction of the right reinforcing plate (31), and the left reinforcing plate (41) is provided along both the length or width direction of the left cover plate (4).

6. A variable damping force wooden sliding friction damper according to claim 1, wherein the upper, lower, front and rear four end faces of the rear sliding plate (1) are surrounded by a first framed connecting member (11), the upper, lower, front and rear four end faces of the front sliding plate (2) are surrounded by a second framed connecting member (21), the first connecting member (11) and the second connecting member (21) are made of common carbon steel or aluminum alloy, the first connecting member (11) is connected to a first member, the second connecting member (21) is connected to a second member, the first member is located behind the rear sliding plate (1), and the second member is located in front of the front sliding plate (2).

7. A variable damping force wooden sliding friction damper as claimed in claim 1 wherein the first resilient mounting (5) and the second resilient mounting (6) are identical in construction and each comprise a fastener and at least one biasing member between the resilient fastener and the cover plate.

8. A variable-damping-force wood sliding friction damper as claimed in claim 7, wherein said biasing member is a spring selected from at least one of: the fastening piece is a high-strength bolt.

9. A variable damping force wooden sliding friction damper as claimed in claim 1, characterized in that the left side surface of the right cover plate (3) and the right side surface of the left cover plate (4) are shaped in a triangular wave form, a trapezoidal wave form, an arc wave form in the front-rear direction.

10. A variable damping force wooden sliding friction damper according to claim 1 or 9, characterized in that the shape of the rear sliding plate (1) and the front sliding plate (2) in the front-rear direction is complementary to the shape of the left side of the right cover plate (3) and the right side of the left cover plate (4).