Height-adjustable double-order friction damper

Abstract

The utility model provides a height-adjustable double-order friction damper which comprises two restraining plates and a plurality of plug pins, friction plates are arranged on the opposite sides of the two restraining plates, and a first sliding plate and a second sliding plate are arranged between the two friction plates in a friction fit mode. A lower connecting plate is fixedly arranged at the bottom of the first sliding plate, a receding groove is formed in the first sliding plate, and the second sliding plate is located in the receding groove. A connecting clamping plate is slidably arranged between the two restraining plates, an upper connecting plate is fixedly arranged at the top of the connecting clamping plate, and a plurality of adjusting holes are formed in the connecting clamping plate; a plurality of jack units are arranged between the two restraining plates, each jack unit comprises two jacks, and the two jacks are symmetrically formed in the two restraining plates; the plug pins are in one-to-one correspondence with the jack units and the adjusting holes, and each plug pin penetrates through the two jacks in the corresponding jack unit and penetrates through the corresponding adjusting hole. And by arranging the connecting clamping plate, the height difference between the upper connecting plate and the lower connecting plate can be adjusted.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of friction damper, specifically relates to a height adjustable double -stage friction daminer. BACKGROUND

[0002] Friction damper is a kind of device that dissipates energy using friction mechanism, usually used in building, traffic and mechanical system to reduce vibration and improve structural stability. The traditional single-stage friction damper can only provide one kind of friction damping force, and the limitation is strong, and the double-stage friction damper can provide extra friction damping force to cope with different size vibrations in earthquake. However, the existing friction damper is generally completed locking in advance, and the friction damper after locking is inconvenient to adjust height, and due to the deviation caused by civil construction in engineering application, the friction damper cannot be reasonably fitted and installed according to actual demand when installing.

[0003] The patent with the existing announcement number CN211114191U discloses a double-stage friction damper, which is provided with first end plate, second end plate, first friction unit, second friction unit, fastening unit and the like, and the first end plate, second end plate and application object structure are connected up and down through connecting member distribution. When earthquake occurs, the building structure occurs relative displacement up and down, drives damper to occur relative sliding and generates friction force, and the pre-tightening force of first friction unit is smaller than that of second friction unit through fastening unit. When the displacement of damper is small, the first friction unit slides first to generate smaller friction force, and when the displacement increases, the second friction unit works to generate greater friction force, so that the demand of friction damper providing different damping force required in different earthquake stages is realized.

[0004] Due to the deviation in engineering construction, the height of the friction damper cannot be adjusted in the above scheme, so that the friction damper may be too high or too low when installing, so that it cannot be reasonably installed at the position required to be installed, and has certain limitation in actual use. UTILITY MODEL CONTENTS

[0005] To solve the problems in the background art, the utility model provides a height adjustable double-stage friction damper.

[0006] In order to realize the above-mentioned purpose, the utility model provides technical scheme as follows:

[0007] The application discloses a height-adjustable double-stage friction damper, which comprises two constraint plates, a plurality of pins, friction plates arranged on opposite sides of the two constraint plates, a first sliding plate and a second sliding plate frictionally arranged between the two friction plates, a lower connecting plate fixedly arranged at the bottom of the first sliding plate, a clearance slot formed in the first sliding plate, the second sliding plate arranged in the clearance slot, a connecting clamp plate slidingly arranged between the two constraint plates, an upper connecting plate fixedly arranged at the top of the connecting clamp plate, a plurality of adjusting holes formed in the connecting clamp plate, a plurality of pin hole units arranged between the two constraint plates, each pin hole unit comprising two pin holes symmetrically arranged on the two constraint plates, and each pin corresponding to one pin hole unit and one adjusting hole.

[0008] Further, the friction force between the second sliding plate and the friction plate is greater than the friction force between the first sliding plate and the friction plate.

[0009] Further, a strip-shaped hole is formed in each of the first sliding plate and the second sliding plate, and a fastening assembly is arranged in each strip-shaped hole; the fastening assembly comprises a bolt and a nut, a plurality of through hole units are arranged between the two constraint plates, each through hole unit comprises two symmetrically arranged through holes, and the two through holes in the same through hole unit are symmetrically arranged on the two constraint plates; the number of strip-shaped holes is equal to the number of through hole units, and each strip-shaped hole corresponds to the two through holes in the corresponding through hole unit; the number of bolts is equal to the number of through hole units, and one end of each bolt passes through the two through holes in the corresponding through hole unit, passes through the strip-shaped hole between the two through holes, and is in threaded connection with the corresponding nut.

[0010] Further, a butterfly spring and a butterfly sleeve are arranged between the nut and the constraint plate, and the butterfly spring is arranged in the butterfly sleeve.

[0011] The application has the following beneficial effects:

[0012] 1. By arranging the connecting clamp plate, the height difference between the upper connecting plate and the lower connecting plate can be adjusted by adjusting the position of the pin in the adjusting hole during installation, so that the friction damper has the function of quickly adjusting the height, thereby increasing the construction convenience and more greatly accepting the size deviation on site, and the actual practical effect is better.

[0013] 2. By arranging the second sliding plate in the first sliding plate and inserting the bolt in the common part of the two sliding plates, the bolt inserted in the common part of the two sliding plates can simultaneously limit the two sliding plates, thereby achieving the effect of one bolt serving multiple purposes, and thereby saving resources and reducing resource waste.

[0014] 3. By setting the first sliding plate and the second sliding plate with different friction coefficients, the friction damper in the scheme can be better applied in different vibration environments. When the vibration is small, the first sliding plate reciprocatingly slides and displaces, thereby generating a small friction damping force to slow down the vibration. When the vibration is large, the first sliding plate drives the second sliding plate to reciprocatingly slide and displace together, thereby increasing the friction damping force to slow down the large vibration, effectively realizing that the output of the friction damper changes with the earthquake action, meeting the design requirements of structural vibration reduction, and having better practical effect. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above and other objects, features and advantages of the exemplary embodiments of the present application will be more apparent from the following detailed description read in conjunction with the accompanying drawings, in which several embodiments of the present application are shown by way of example, and wherein the same reference numerals refer to the same or similar components throughout the several views. In the drawings:

[0016] Figure 1 is a front view structural schematic diagram of the present application;

[0017] Figure 2 is a side view structural schematic diagram of the present application;

[0018] Figure 3 is a top view structural schematic diagram of the present application;

[0019] Figure 4 is a first sliding plate structural schematic diagram of the present application;

[0020] Figure 5 is a connecting clamp plate structural schematic diagram of the present application;

[0021] Figure 6 is a second sliding plate structural schematic diagram of the present application;

[0022] Figure 7 is a constraint plate structural schematic diagram of the present application.

[0023] BRIEF DESCRIPTION OF DRAWINGS

[0024] 1, upper connecting plate; 2, connecting clamp plate; 3, lower connecting plate; 4, constraint plate; 5, insertion hole; 6, insertion pin; 7, adjusting hole; 8, first sliding plate; 9, second sliding plate; 10, strip-shaped hole; 12, through hole; 13, bolt; 14, nut; 15, butterfly sleeve; 16, clearance groove; 17, friction plate. DETAILED DESCRIPTION

[0025] With reference to the drawings and the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, and those skilled in the art should know that the embodiments described below are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0026] As shown in Figures 1-7 The technical scheme adopted by the present application is as follows: a height-adjustable double-step friction damper, comprising two symmetrically arranged constraint plates 4 and a plurality of bolts 6, and one friction plate 17 is fixedly arranged on the opposite side of each of the two constraint plates 4. A first sliding plate 8 and a second sliding plate 9 with friction effect are arranged between the two friction plates 17, a lower connecting plate 3 is fixedly arranged at the bottom of the first sliding plate 8, a displacement slot 16 is formed in the first sliding plate 8, the second sliding plate 9 is arranged in the displacement slot 16, the area of the displacement slot 16 is greater than the area of the second sliding plate 9, and the second sliding plate 9 can displace in the displacement slot 16.

[0027] The first sliding plate 8 and the second sliding plate 9 both have frictional motion with the friction plate 17, and the friction force between the second sliding plate 9 and the friction plate 17 is greater than the friction force between the first sliding plate 8 and the friction plate 17.

[0028] A strip-shaped hole 10 is formed in each of the first sliding plate 8 and the second sliding plate 9, and a fastening assembly is arranged in each strip-shaped hole 10. The fastening assembly comprises a bolt 13 and a nut 14, a plurality of groups of through hole units are arranged between the two constraint plates 4, each group of through hole units comprises two symmetrically arranged through holes 12, and the two through holes 12 in the same group of through hole units are symmetrically arranged on the two constraint plates 4. The number of strip-shaped holes 10 is equal to the number of through hole units and corresponds one-to-one, and each strip-shaped hole 10 corresponds to the two through holes 12 in the corresponding through hole unit.

[0029] The number of bolts 13 is equal to the number of through hole units and corresponds one-to-one, one end of each bolt 13 away from the nut passes through the two through holes 12 in the corresponding through hole unit, passes through the strip-shaped hole 10 between the two through holes 12, and is in threaded connection with the corresponding nut 14. The bolt 13 is in sliding connection with the strip-shaped hole 10, in addition, a butterfly spring (not shown in the figure) and a butterfly sleeve 15 are further arranged between the nut 14 and the constraint plate 4, and the butterfly spring is arranged in the butterfly sleeve 15.

[0030] By tightening and loosening the nut 14 and the bolt 13, the friction force when the first sliding plate 8 and the second sliding plate 9 move with the friction plate 17 can be adjusted.

[0031] A connecting clamp plate 2 is also slidably arranged between the two constraint plates 4, and the top of the connecting clamp plate 2 is fixedly arranged with the upper connecting plate 1. A plurality of waist-shaped adjusting holes 7 are arranged on the connecting clamp plate 2, and the adjusting holes 7 are arranged in a linear manner along the length direction of the connecting clamp plate 2. The hole direction of the adjusting holes 7 is arranged along the sliding direction of the connecting clamp plate 2.

[0032] A plurality of groups of jack plug units are arranged between the two constraint plates 4, and each group of jack plug units includes two jack plugs 5 symmetrically arranged on the two constraint plates 4. The jack pin 6 corresponds to the adjusting hole 7 and the jack plug unit one by one, and each jack pin 6 passes through the two jack plugs 5 in the corresponding jack plug unit and the corresponding adjusting hole 7. In addition, the jack pin 6 can slide relative to the adjusting hole 7.

[0033] The sliding of the connecting clamp plate 2 can be limited by the jack pin 6, so that the position of the connecting clamp plate 2 can be adjusted within a certain range. Only by moving the connecting clamp plate 2 and making the jack pin 6 slide relative to the adjusting hole 7, the height difference between the upper connecting plate 1 and the lower connecting plate 3 can be adjusted, so that the friction damper has the function of quickly adjusting the height, thereby increasing the construction convenience and more accepting the size deviation of the site, and the actual practical effect is better.

[0034] Working principle: during installation, by pulling the upper connecting plate 1, the jack pin 6 slides relative to the adjusting hole 7, thereby adjusting the height difference between the upper connecting plate 1 and the lower connecting plate 3, facilitating installation, thereby increasing the construction convenience, more accepting the size deviation of the site, and the actual practical effect is better. Subsequently, the upper connecting plate 1 is connected with the upper end of the connected building structure, and the lower connecting plate 3 is connected with the lower end of the connected building structure.

[0035] When an earthquake occurs, the upper and lower ends of the building structure will relatively displace, thereby driving the friction damper to relatively slide, thereby generating a friction force to offset the vibration.

[0036] Since the friction force between the second sliding plate 9 and the friction plate 17 is greater than the friction force between the first sliding plate 8 and the friction plate 17, when the vibration caused by the earthquake is small, the second sliding plate 9 does not displace, and the first sliding plate 8 relatively reciprocates with the friction plate 17 in the transverse direction, thereby generating a small friction force to offset the vibration.

[0037] When the vibration caused by the earthquake is large, the second sliding plate 9 works, and the first sliding plate 8 and the second sliding plate 9 both relatively reciprocate with the friction plate 17 in the transverse direction, thereby generating a larger friction force to offset the vibration, thereby realizing the requirement of the friction damper to provide different damping forces required in different earthquake stages.

[0038] Although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A highly adjustable dual-stage friction damper, characterized by, Two constraint plates (4) are provided with friction plates (17) on opposite sides, and a first sliding plate (8) and a second sliding plate (9) are frictionally arranged between the two friction plates (17); the bottom of the first sliding plate (8) is fixedly provided with a lower connecting plate (3), a displacement slot (16) is formed in the first sliding plate (8), and the second sliding plate (9) is located in the displacement slot (16); a connecting clamp plate (2) is slidingly arranged between the two constraint plates (4), the top of the connecting clamp plate (2) is fixedly provided with an upper connecting plate (1), and a plurality of adjusting holes (7) are formed in the connecting clamp plate (2); a plurality of insertion hole units are arranged between the two constraint plates (4), each insertion hole unit includes two insertion holes (5) symmetrically arranged on the two constraint plates (4); the insertion pin (6) corresponds to the insertion hole unit and the adjusting hole (7) one by one, each insertion pin (6) passes through the two insertion holes (5) in the corresponding insertion hole unit and the corresponding adjusting hole (7); in addition, the insertion pin (6) and the adjusting hole (7) are in sliding fit.

2. The height adjustable dual stage friction damper of claim 1, wherein, The friction force between the second sliding plate (9) and the friction plate (17) is greater than the friction force between the first sliding plate (8) and the friction plate (17).

3. The height adjustable dual stage friction damper of claim 1, wherein, A strip-shaped hole (10) is formed in each of the first sliding plate (8) and the second sliding plate (9), and a fastening assembly is arranged in each strip-shaped hole (10); the fastening assembly includes a bolt (13) and a nut (14), a plurality of through hole units are arranged between the two constraint plates (4), each through hole unit includes two symmetrically arranged through holes (12), and the two through holes (12) in the same through hole unit are symmetrically arranged on the two constraint plates (4); the number of strip-shaped holes (10) and through hole units is equal and one-to-one corresponding, and each strip-shaped hole (10) corresponds to the two through holes (12) in the corresponding through hole unit; the number of bolts (13) and through hole units is equal and one-to-one corresponding, one end of each bolt (13) passes through the two through holes (12) in the corresponding through hole unit, passes through the strip-shaped hole (10) between the two through holes (12), and is in threaded fit with the corresponding nut (14).

4. The height adjustable dual stage friction damper of claim 3, wherein, The nut (14) and the constraint plate (4) are further provided with a butterfly spring and a butterfly sleeve (15), and the butterfly spring is arranged in the butterfly sleeve (15).

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