CN112032235A

CN112032235A - Internal friction type damper

Info

Publication number: CN112032235A
Application number: CN202010906040.8A
Authority: CN
Inventors: 饶顺斌; 朱全军; 高政国; 林松涛
Original assignee: Yunnan Power Grid Co Ltd
Current assignee: Yunnan Power Grid Co Ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2020-12-04

Abstract

The application provides an internal friction type attenuator, including seal box, sleeve, slide bar, damping material and peg, separate a sealed cavity and a connection cavity in the seal box, the slide bar passes sealed cavity, and the sleeve is located sealed cavity, cup joints and fixes on the slide bar, the peg encircles the sleeve, fixes on the sleeve surface, fills up damping material in the sealed cavity, buries sleeve and peg. The friction damper has the advantages that in the mode that the studs are combined with the sleeves, the studs perform reciprocating furrow movement in the particle damping materials to generate friction, the mode that the friction damper generates friction through contact pressure in the traditional friction damper is changed, and the friction coefficient cannot be changed after long-term working. The friction force acquisition mode is changed, and the friction force of the device is stable. Meanwhile, the particle damping material is sealed in the box body as the damping material, so that the leakage of the material is avoided, and the adaptability to environmental changes such as temperature is strong. The device is more durable and not easy to damage.

Description

Internal friction type damper

Technical Field

The application relates to the field of damping and shock absorption, in particular to an internal friction type damper.

Background

The existing dampers are generally classified into velocity-related types, displacement-related types and some special types according to the difference of damping force.

The speed-dependent damper is directly related to the movement speed, and mainly comprises an oil damper and a viscoelastic damper, wherein a viscous material is a liquid or a high-molecular polymer material, so that high process requirements are required for preventing leakage of a viscous body, and the physical properties of the viscous material are easily influenced by environmental changes such as temperature and aging, so that the change of a damping force is controlled.

The displacement-related dampers mainly comprise metal yield dampers and friction dampers, the metal yield dampers are difficult to restore, threshold control is difficult, the friction dampers realize damping force characteristics by utilizing contact friction force, friction energy consumption is obvious, but contact pressure needs to be provided, and the friction dampers are in long-term static contact under the action of constant positive contact pressure, cold bonding or condensation can be generated, expected friction coefficients are changed, and friction devices are degraded.

Therefore, it is necessary to provide a damper that can avoid the technical defects that viscous materials in a speed-dependent damper are easy to leak and greatly influenced by environmental changes, and a displacement-dependent damper needs to provide contact pressure and the friction coefficient is easy to change due to a long-term working state.

Disclosure of Invention

In order to achieve the above object, the present application provides an internal friction type damper, including seal box, sleeve, slide bar, damping material and peg, separate a sealed cavity and a connection cavity in the seal box, the slide bar passes sealed cavity, the sleeve is located sealed cavity, cup joints and fixes on the slide bar, the peg encircles the sleeve, fixes on the sleeve surface, fill damping material in the sealed cavity, bury sleeve and peg.

In order to prevent the sliding rod from falling off in the moving process, two ends of the sliding rod are respectively provided with a displacement baffle, and the displacement baffles are arranged outside the sealed cavity and fixed on the sliding rod.

In order to protect the damping material in the sealed box, a sealing sliding layer is arranged at the connecting hole of the sliding rod on the two side walls of the sealed cavity.

Furthermore, the displacement baffle on one side of the sliding rod is positioned in the connecting cavity, and the other side of the sliding rod is positioned outside the sealing box.

In order to install the location to the attenuator of this application, the seal box both sides are equipped with a connecting rod respectively, and wherein one side connecting rod is fixed on the seal box lateral wall, and the opposite side connecting rod is connected with the removal baffle that is located outside the seal box.

In order to ensure that the only extent of the piston rod does not exceed the seal box, the sleeve and the length of the sleeve to the movable baffle are less than the length of the seal cavity.

In order to prevent the sliding rod from being damaged due to collision between the displacement baffle and the sealing box in the displacement process, a buffer layer is arranged on one side, close to the sealing cavity, of the displacement baffle.

Different frictional forces are designed for adjusting the number of pegs, which are detachable pegs.

Optionally, the damping material is a particle damping material.

In this application, adopt the mode that peg and sleeve combine, carry out reciprocal furrow motion through the peg and produce frictional force in granule damping material, changed traditional friction damper and produced the mode of frictional force through contact pressure, long-term work coefficient of friction can not change. The friction force obtaining mode of the traditional friction type damper is changed, and the friction force of the device is stable.

Meanwhile, the granular damping material is used as the damping material, the sealing sliding layer is arranged at the connecting hole of the sliding rod on the two side walls of the sealing cavity, so that the leakage of the material is avoided, and the adaptability to environmental changes such as temperature is strong. The device is more durable and not easy to damage.

Meanwhile, the damper device is simple in structure and convenient to install.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the internal friction damper construction of the present application;

FIG. 2 is a side cross-sectional view of the internal friction damper of the present application.

In the figure, 1-a stud, 2-a sleeve, 3-a slide bar, 4-a connecting hole, 5-a hexagon bolt, 6-a seal box, 7-a particle damping material, 8-a displacement baffle, 9-a buffer layer and 10-a connecting rod.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As shown in fig. 1 and 2, the application provides an internal friction type damper, which mainly comprises a seal box 6, a sleeve 2, a sliding rod 3, a damping material and a stud 1, wherein the seal box 6 is internally divided into a seal cavity and a connecting cavity, the sliding rod 3 penetrates through the seal cavity, and a seal sliding layer is arranged at the connecting hole of the sliding rod 3 and two side walls of the seal cavity.

Two ends of the sliding rod 3 are respectively provided with a displacement baffle 8, the displacement baffles 8 are arranged outside the sealed cavity, the displacement baffle 8 on one side is positioned in the connecting cavity, and the displacement baffle 8 on the other side is positioned outside the seal box 6. And a buffer layer 9 is arranged on one side of the displacement baffle 8 close to the sealed cavity. The connecting rod at the end part of the sliding rod 3 positioned in the connecting cavity is fixedly connected with the displacement baffle through a hexagon bolt 5.

The sleeve 2 is positioned in the sealed cavity and is fixedly sleeved on the sliding rod 3, and the stud 1 surrounds the sleeve 2 and is fixed on the surface of the sleeve 2. The pegs 1 are detachable pegs, and the friction force is changed by adjusting the number of the pegs 1. The sealed cavity is filled with damping material, burying the sleeve 2 and the peg 1. The damping material is selected from a granular damping material 7. The sum of the lengths of the sleeve and the sleeve to the moving barrier is less than the length of the sealed cavity.

Two sides of the seal box 6 are respectively provided with a connecting rod 10, wherein the connecting rod 10 on one side is fixed on the side wall of the seal box 6, and the connecting rod 10 on the other side is connected with a movable baffle 8 positioned outside the seal box 6.

Example 1:

the internal friction type damper of the present application is connected by the connecting rods 10 at both sides in the actual use process. Wherein the connecting rod 10 fixed on the side wall of the seal box 6 is a fixed connecting rod, and the connecting rod 10 with the other side connected with the displacement baffle 8 is a movable working end.

When a connecting rod 10 connected with a displacement baffle 8 moves, the sliding rod 3 is driven to move, the sliding rod 3 drives a sleeve 2 fixedly connected with the sliding rod 3 to move, in the moving process, as the surface of the sleeve 2 is provided with a stud 1 connected with the sleeve 2, and the stud 1 and the sleeve 2 are both submerged in the particle damping material 7, in the moving process of the sleeve 2, the stud 1 is in contact with the particle damping material 7, the contact area is increased, the friction force is increased, and the expected function of the damper is achieved. Meanwhile, different friction forces can be designed by adjusting the number of the studs.

In the application, the mode that the stud 1 is combined with the sleeve 2 is adopted, the stud 1 performs reciprocating furrow movement in the particle damping material 7 to generate friction force, the mode that the friction force is generated by the traditional friction damper through contact pressure is changed, and the friction coefficient cannot be changed after long-term working.

Meanwhile, the granular damping material 7 is used as a damping material, so that material leakage is avoided, and the adaptability to environmental changes such as temperature is strong.

Therefore, the friction force obtaining mode of the traditional friction type damper is changed, the friction force is stable, friction energy consumption is achieved in a more effective mode, and the aim of resisting shock is achieved.

Meanwhile, the device also has the advantages of durability, variable friction force, simple structure of the damper device, convenience in installation and the like.

The present application has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to limit the application. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the presently disclosed embodiments and implementations thereof without departing from the spirit and scope of the present disclosure, and these fall within the scope of the present disclosure. The protection scope of this application is subject to the appended claims.

Claims

1. The internal friction type damper is characterized by comprising a seal box (6), a sleeve (2), a sliding rod (3), a damping material and a stud (1), wherein the seal box (6) is internally provided with a seal cavity and a connecting cavity in a separated mode, the sliding rod (3) penetrates through the seal cavity, the sleeve (2) is positioned in the seal cavity and is fixedly sleeved on the sliding rod (3), the stud (1) surrounds the sleeve (2) and is fixed on the surface of the sleeve (2), and the seal cavity is filled with the damping material to bury the sleeve (2) and the stud (1).

2. An internal friction type damper according to claim 1, wherein a displacement baffle (8) is respectively arranged at two ends of the sliding rod (3), and the displacement baffle (8) is arranged outside the sealed cavity and fixed on the sliding rod (3).

3. An internal friction type damper according to claim 1, wherein a sealing sliding layer is provided at the connecting holes of the sliding rods (3) sealing both side walls of the cavity.

4. An internal friction type damper according to claim 2, wherein the slide bar (3) has a displacement damper (8) on one side located in the connecting cavity and a displacement damper (8) on the other side located outside the sealed box.

5. The internal friction type damper according to claim 4, wherein a connecting rod (10) is provided on each side of the seal box (6), wherein the connecting rod (10) on one side is fixed on the side wall of the seal box (6), and the connecting rod (10) on the other side is connected with the movable baffle (8) located outside the seal box (6).

6. The internal friction type damper according to claim 1, wherein the sum of the lengths of the sleeve and the sleeve to the moving barrier is smaller than the length of the sealed cavity.

7. An internal friction damper according to claim 1, wherein the side of the displacement baffle (8) adjacent to the sealed cavity is provided with a cushioning layer.

8. An internal friction type damper according to claim 1, characterized in that said peg (1) is a removable peg.

9. An internal friction type damper according to claim 1, characterized in that the damping material is a particle damping material (7).