CN218644707U

CN218644707U - Shock absorber with automatic reset and limit functions

Info

Publication number: CN218644707U
Application number: CN202223190142.8U
Authority: CN
Inventors: 白鸿柏; 郑孝源; 柳旺; 任志英; 吴乙万
Original assignee: Fuzhou University
Current assignee: Fuzhou University
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-03-17
Anticipated expiration: 2032-11-30

Abstract

The utility model relates to a shock absorber with automatic re-setting and limit function, including the damping casing, damping casing top is seted up and is supplied the upper cover plate to press and establish the round hole in, and the upper cover plate is established the top cap outside the round hole and is stretched into the briquetting in the damping casing including the lid, there are at least two sets of damping mechanisms along briquetting bottom week portion equipartition in the damping casing, and damping mechanism includes the slider, and this slider inner butt is in the briquetting periphery, through horizontal metal rubber butt between outer end and the damping casing inside wall, has set firmly the guide pillar of vertical extension on the roof in the damping casing, and the outer vertical sliding connection of guide pillar has vertical metal rubber and vertical slider, vertical slider links firmly at vertical metal rubber lower extreme, vertical metal rubber overcoat is equipped with vertical damping spring, it has the connecting rod to articulate on the vertical slider, and this connecting rod other end articulates on the nearly top of slider, and this shock absorber not only can better absorbed energy, has effectively improved the intensity of shock absorber in addition in order to improve the life of shock absorber.

Description

Shock absorber with automatic reset and limit functions

Technical Field

The utility model relates to a shock absorber with automatic re-setting and limit function.

Background

As the industry advances, the requirement for vibration isolation of equipment is greater, and vibration can cause damage to parts and loose fit between the parts, so that the overall structure is failed, and the damage to the industry is great. In addition, as the demand for the ambient temperature of the equipment increases, the damper is required to have a high and low temperature resistance function.

The main damping elements of the existing damper are high polymer products such as rubber, the damper is very easy to fail and damage under high and low temperature and irradiation conditions, the existing damper takes the three-way damping requirement into account very little, and the damage of large impact load to the damper is avoided, so that the application range and the service life of the damper are seriously influenced.

SUMMERY OF THE UTILITY MODEL

In view of the not enough of prior art, the utility model aims to solve the technical problem that a shock absorber with automatic re-setting and limit function is provided, absorbed energy that not only can be better has effectively improved the intensity of shock absorber in order to improve the life of shock absorber moreover.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a shock absorber with automatic re-setting and limit function, includes the damping casing, damping casing top is seted up and is supplied the upper cover plate to press and establish the interior round hole, the upper cover plate is including covering the top cap of establishing outside the round hole and stretching into the briquetting in the damping casing, along briquetting bottom week portion equipartition have two sets at least damping mechanism in the damping casing, damping mechanism includes the slider, and the butt in this slider is in the briquetting periphery, through horizontal metal rubber butt between outer end and the damping casing inside wall, set firmly the guide pillar of vertical extension on the roof in the damping casing, the vertical sliding connection has vertical metal rubber and vertical slider outside the guide pillar, vertical slider links firmly at vertical metal rubber lower extreme, vertical metal rubber overcoat is equipped with vertical damping spring, it has the connecting rod to articulate on the vertical slider, and this connecting rod other end articulates on the nearly top of slider.

Furthermore, the horizontal metal rubber is arranged horizontally, and a horizontal damping spring is coaxially sleeved outside the horizontal metal rubber.

Furthermore, the vertical metal rubbers are sequentially arranged in the vertical downward extending direction of the guide pillar, and the density of the vertical metal rubbers is gradually reduced from top to bottom.

Furthermore, two ends of the horizontal vibration damping spring are respectively abutted to the inner wall of the vibration damping shell and the sliding block, one end of the horizontal metal rubber is fixedly connected to the inner wall of the vibration damping shell, and the other end of the horizontal metal rubber is connected with the sliding block.

Furthermore, the bottom end of the pressing block is fixedly provided with a tapered top block, the bottom end of the top block is fixedly connected with a metal rubber-steel plate vibration damping body, the metal rubber-steel plate vibration damping body comprises three groups of metal rubbers which are arranged at an upper interval and a lower interval, a steel plate is clamped between the three groups of metal rubbers, the top of the metal rubber at the topmost layer is fixedly connected with the top block through a steel plate, and the metal rubber and the steel plate are welded and formed.

Furthermore, the size of the top block is gradually reduced from top to bottom, a lower buffer block is fixedly arranged outside the top block on the lower end face of the pressing block, and an upper buffer block matched with the lower buffer block and abutted to the top end of each group of sliding blocks of the vibration reduction mechanism is fixedly arranged on the top end of each group of sliding blocks.

Further, the damping casing bottom has linked firmly the pedestal, all seted up a plurality of bolted connection holes on pedestal and the top cap.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. compared with the traditional rubber vibration damper, the metal rubber is only prepared from metal wires, so that the metal rubber has the advantages of high and low temperature resistance, irradiation resistance, ageing resistance and the like, and in addition, the metal rubber with different densities is brazed on the steel plate in a layered mode to form a vibration damping body formed by overlapping the metal rubber, the steel plate and the metal, so that the strength of the vibration damper is effectively improved, and the service life of the vibration damper is prolonged.

2. Thereby the downstream through the upper cover plate drives the slider and outwards removes and extrudees horizontal damping spring and makes the spring compression to through the vertical damping spring of connecting rod with extrusion vertical direction, convert the motion of horizontal direction into the motion of vertical direction, reach the purpose of high-efficient damping, and horizontal damping metal rubber and vertical metal rubber have been placed inside the inside vertical damping spring of horizontal damping spring, in order to reach the effect of damping energy-absorbing. In addition, when the shock absorber removes external force, the upper cover plate can move upwards by the compressed spring, so that the automatic resetting effect is achieved

3. On the top of horizontal slider, the bottom of briquetting all is provided with the buffer block, and when the shock absorber bore too big load, the upper end of horizontal slider can play spacing effect, and the high bearing of limited avoidance damages damping spring and damping rubber.

4. The vertical vibration reduction metal rubber is divided into two pieces with different densities, so that the problem of preparing the slender metal rubber is effectively solved, and the metal rubber with lower density has larger damping so as to achieve better energy absorption effect during small-displacement vibration.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a schematic construction diagram of an embodiment of the present invention;

fig. 2 is a schematic sectional view of an embodiment of the present invention;

fig. 3 is an enlarged schematic view of the metal rubber-steel plate vibration damping body according to an embodiment of the present invention.

In the figure: 1-damping shell, 2-upper cover plate, 3-round hole, 4-top cover, 5-pressing block, 6-damping mechanism, 7-sliding block, 8-horizontal metal rubber, 9-guide pillar, 10-vertical metal rubber, 11-vertical sliding block, 12-vertical damping spring, 13-connecting rod, 14-horizontal damping spring, 16-top block, 17-metal rubber-steel plate damping body, 18-steel plate, 19-pedestal, 20-bolt connecting hole, 21-lower buffer block and 22-upper buffer block.

Detailed Description

In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

As shown in 1~3, the shock absorber with automatic resetting and limiting functions comprises a shock absorbing shell 1, wherein a circular hole 3 for an upper cover plate 2 to be pressed into is formed in the top of the shock absorbing shell, the upper cover plate comprises a top cover 4 covering the outside of the circular hole and a pressing block 5 extending into the shock absorbing shell, four groups of shock absorbing mechanisms 6 are uniformly distributed in the shock absorbing shell along the periphery of the bottom end of the pressing block, each shock absorbing mechanism comprises a sliding block 7, the inner end of the sliding block abuts against the periphery of the pressing block, the outer end of the sliding block abuts against the inner side wall of the shock absorbing shell through a horizontal metal rubber 8, a vertically extending guide pillar 9 is fixedly arranged on the inner top wall of the shock absorbing shell, the outer side of the guide pillar is vertically and slidably connected with a vertical metal rubber 10 and a vertical sliding block 11, the bottom of the guide pillar is in a vertical head shape to prevent the vertical sliding block from coming off, the vertical sliding block is fixedly connected to the lower end of the vertical metal rubber, a vertical shock absorbing spring 12 is sleeved outside the vertical metal rubber, a connecting rod 13 is hinged to the vertical sliding block, and the other end of the connecting rod is hinged to the top end of the sliding block.

In the embodiment of the utility model, the equal level setting of horizontal metal rubber, and the outer equal coaxial cover of horizontal metal rubber is equipped with horizontal damping spring 14.

In the embodiment of the utility model, two groups of vertical metal rubbers are arranged in sequence along the vertical downward extending direction of the guide pillar, and the density of the vertical metal rubber positioned above is greater than that of the vertical metal rubber positioned below; the vertical vibration reduction metal rubber and the vertical vibration reduction spring are combined to convert horizontal vibration into vertical vibration so as to achieve the purpose of reducing the horizontal vibration.

The embodiment of the utility model provides an in, this horizontal damping spring both ends top respectively connect on damping shells inner wall and slider, horizontal metal rubber one end rigid coupling is connected at damping shells inner wall, the other end and slider.

The embodiment of the utility model provides an in, the briquetting bottom has set firmly the kicking block 16 that is the taper, the kicking block bottom has linked firmly metal rubber-steel sheet damping body 17, metal rubber-steel sheet damping body is including three group's metal rubber that the interval set up from top to bottom, all presss from both sides between this three group's metal rubber to be equipped with the steel sheet 18, and the metal rubber top of topmost layer is through steel sheet and kicking block rigid coupling, metal rubber and steel sheet welded forming, metal rubber-steel sheet damping body forms the damping body through the mode of brazing by the metal rubber of three kinds of different density and steel sheet, the metal rubber density of the topmost of damping body is minimum, and bottom metal rubber's density is the biggest, the metal rubber damping that density is little is great, consequently plays the effect of damping when the damping body bears less displacement, and when the displacement continues to increase, the metal rubber of bottom plays the effect that damping effect and density are great can play high bearing capacity.

The embodiment of the utility model provides an in, kicking block top-down size reduces gradually, the terminal surface has set firmly lower buffer block 21 outside the kicking block under the briquetting, each group damping mechanism's slider top all set firmly with the last buffer block 22 of lower buffer block cooperation butt, when vibrating too big, slider upper end plane portion and upper cover plate briquetting lower extreme contact play spacing effect, prevent that the displacement from too big leading to the fact destruction to the shock absorber, upper and lower buffer block can play the effect of buffering damping when spacing in order to reduce the impact destruction to the shock absorber, the casing links to each other with the base and reaches fixed purpose.

The embodiment of the utility model provides an in, damping casing bottom has linked firmly pedestal 19, and the pedestal is solid to be as an organic whole so that better fixing on the base with the damping casing, a plurality of bolted connection holes 20 have all been seted up on pedestal and the top cap.

The utility model discloses theory of operation of embodiment: in the using process, the density of the metal rubber brazed by the metal rubber and the steel plate is selected according to actual bearing, wherein the density of the top layer metal rubber is lower, the density of the second layer metal rubber is moderate, and the density of the bottom layer metal rubber is higher, wherein the top layer metal rubber mainly improves the damping effect, the bottom layer metal rubber mainly provides the high bearing capacity, metal additives with different densities are combined with the steel plate in a brazing mode to form a metal rubber-steel plate-metal rubber vibration damping mode, the steel plate can effectively improve the strength of the metal rubber-steel plate vibration damping body, and in addition, compared with the traditional bonding mode, the brazing mode can improve the overall high and low temperature resistance.

During installation, the vibration reduction shell is fixed on the base, the upper cover plate is connected with the vibration-isolated object through the bolt, when the vibration absorber is subjected to small vibration, the metal rubber-the uppermost metal rubber of the steel plate vibration reduction body is compressed by downward movement of the upper cover plate, the slider is driven to move outwards, horizontal vibration reduction springs and horizontal metal rubber are compressed, in addition, the vertical slider also upwards compresses the vertical vibration reduction springs and the vertical metal rubber along the guide rod, because the density of the vertical vibration reduction metal rubber of the lower part is small, the vibration is compressed when small, the vertical vibration reduction metal rubber of the lower part is mainly compressed, and the vertical metal rubber positioned on the lower part is large in damping, so that the effect of absorbing energy can be well played. When the vibration absorber is subjected to larger vibration, the metal rubber with higher density in the metal rubber-steel plate vibration absorbing body can play a good vibration isolation role, in addition, the steel plate addition greatly improves the bearing capacity of the whole structure, in addition, when the vibration is larger, the vertical metal rubber positioned at the upper part can also play a bearing role, and the combined action of the horizontal vibration absorbing spring, the horizontal metal rubber, the vertical metal rubber and the vertical vibration absorbing spring can well absorb the impact load in the vertical direction. When the damping body receives the vibration of horizontal direction, also can give the slider vibration transmission through the upper cover plate equally, thereby it plays the effect of vibration isolation to drive the motion of damping body, when installing by the vibration isolation thing, horizontal damping spring is in uncompressed state only with vertical damping spring, when receiving level or vertical vibration, level and vertical spring compression reduce the vibration, and when the vibration was removed, the spring of compression resumes the normal position and consequently goes up the top cap upward movement and play automatic re-setting's effect, when receiving great impact vibration, the plane and the briquetting lower extreme contact of slider upper end, play spacing effect, and at slider upper end plane department and briquetting lower extreme, all install the buffer block, can effectually reduce the impact of vibration to the shock absorber, play the effect that improves shock absorber life.

The present invention is not limited to the above preferred embodiments, and any one can obtain other various forms of shock absorbers with automatic reset and limit functions. All the equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.

Claims

1. The utility model provides a shock absorber with automatic re-setting and limit function which characterized in that: including the damping casing, damping casing top is seted up and is supplied the upper cover plate to press to establish the interior round hole, the upper cover plate is including covering the top cap of establishing outside the round hole and stretching into the briquetting in the damping casing, there are at least two sets of damping mechanisms along briquetting bottom week portion equipartition in the damping casing, damping mechanism includes the slider, and the butt in the briquetting periphery in this slider is through horizontal metal rubber butt between outer end and the damping casing inside wall, set firmly the guide pillar of vertical extension on the roof in the damping casing, the outer vertical sliding connection of guide pillar has vertical metal rubber and vertical slider, vertical slider links firmly at vertical metal rubber lower extreme, vertical metal rubber overcoat is equipped with vertical damping spring, it has the connecting rod to articulate on the vertical slider, and this connecting rod other end articulates on the nearly top of slider.

2. The shock absorber with automatic resetting and limiting functions as claimed in claim 1, wherein: the horizontal metal rubber is arranged horizontally, and a horizontal damping spring is coaxially sleeved outside the horizontal metal rubber.

3. The shock absorber with automatic resetting and limiting functions as claimed in claim 2, wherein: the vertical metal rubbers are sequentially arranged in the vertical downward extending direction of the guide pillar, and the density of the vertical metal rubbers is gradually reduced from top to bottom.

4. The shock absorber with automatic resetting and limiting functions as claimed in claim 2, wherein: two ends of the horizontal vibration damping spring are respectively connected to the inner wall of the vibration damping shell and the sliding block in a propping mode, one end of the horizontal metal rubber is fixedly connected to the inner wall of the vibration damping shell, and the other end of the horizontal metal rubber is connected with the sliding block.

5. The shock absorber with automatic resetting and limiting functions as claimed in claim 1, wherein: the metal rubber-steel plate vibration damper is characterized in that a conical top block is fixedly arranged at the bottom end of the pressing block, a metal rubber-steel plate vibration damper is fixedly connected to the bottom end of the top block and comprises three groups of metal rubbers which are arranged at intervals from top to bottom, steel plates are clamped among the three groups of metal rubbers, the top of the metal rubber at the topmost layer is fixedly connected with the top block through the steel plates, and the metal rubber and the steel plates are welded and formed.

6. The shock absorber with automatic resetting and limiting functions as claimed in claim 5, wherein: the size of the top block is gradually reduced from top to bottom, the lower end face of the pressing block is fixedly provided with a lower buffer block outside the top block, and the top ends of the sliding blocks of the vibration reduction mechanisms are fixedly provided with upper buffer blocks which are matched with the lower buffer blocks to be abutted.

7. The shock absorber with automatic resetting and limiting functions as claimed in claim 1, wherein: the damping casing bottom has linked firmly the pedestal, all seted up a plurality of bolted connection holes on pedestal and the top cap.