CN221221261U - Wear-resistant spring damper - Google Patents

Abstract

The utility model belongs to the technical field of the bumper shock absorber, concretely relates to stand wear and tear spring damper, including support one and support two, fixedly connected with outer sleeve on the support one, the inside of outer sleeve is equipped with rotatable inner skleeve, fixedly connected with piston rod on the support two, the inside of piston rod slidable to the inner skleeve, and the piston rod is located the inside one end of inner skleeve and is equipped with damping portion, just be located the outside of outer sleeve and inner skleeve between support one and the support two and be equipped with damping spring, fixedly connected with motor on the outer sleeve, the output fixedly connected with pinion of motor, the tooth socket with pinion meshing connection has been seted up in the outside of inner skleeve, damping portion includes two sets of damping piece. The utility model discloses can let the great frictional force that produces when the different positions of inner skleeve bear the shock attenuation, make the wearing and tearing of each position of inner skleeve comparatively even, reduce the life reduction phenomenon that the shock absorber produced because of one side excessive wear when using.

Description

Wear-resistant spring damper

Technical Field

The utility model belongs to the technical field of the bumper shock absorber, concretely relates to stand wear and tear spring damper.

Background

In order to quickly attenuate the vibration of the frame and the vehicle body and improve the smoothness and comfort of the running of the vehicle, a shock absorber is generally arranged on an automobile suspension system;

For example, chinese patent with publication number CN212250948U discloses a wear-resistant automobile damper, which is provided with a pressure cylinder, a buffer seat, a buffer gasket, a buffer shell, a piston rod, a wear-resistant layer, a fixed seat, a hanging ring, a through hole, a chute, a sliding block and a buffer spring, so that the advantage of good wear resistance is achieved, serious wear can not occur after long-term use, and damage to internal parts can not be caused;

However, since the horizontal thrust is applied to the damper when the vehicle is running, the friction between the piston rod and one side of the sleeve is large, and the friction is affected by the friction, the service life of the damper is easily reduced due to excessive abrasion of one side of the damper when the damper is in use.

Disclosure of utility model

The utility model aims at providing a stand wear and tear spring damper can let the different positions of inner skleeve bear the great frictional force that produces when the shock attenuation, makes the wearing and tearing of each position of inner skleeve comparatively even, reduces the life reduction phenomenon that the shock absorber produced because of one side excessively wears during the use.

The technical scheme adopted by the utility model is as follows:

The utility model provides a stand wear-resistant spring shock absorber, includes support one and support two, fixedly connected with outer sleeve on the support one, rotatable inner skleeve is equipped with to the inside of outer sleeve, fixedly connected with piston rod on the support two, the inside of piston rod slidable to the inner skleeve, just the piston rod is located the inside one end of inner skleeve and is equipped with damping portion, just be equipped with damping spring in the outside of outer sleeve and inner skleeve between support one and the support two.

Further, a motor is fixedly connected to the outer sleeve, a pinion is fixedly connected to the output end of the motor, and a tooth socket which is in meshed connection with the pinion is formed in the outer side of the inner sleeve.

Further, the damping portion includes two sets of damping blocks, and the quantity of every damping block of group is three, and same three the damping block of group is annular array, the damping block includes expansion state and shrink state, the damping block can be in expansion state and shrink state between switch, two sets of the damping block is expansion state and shrink state respectively.

Further, the upper portion fixedly connected with two sets of guide rings with damping piece looks adaptation of piston rod, two sets of damping piece is sliding connection respectively in the inside of two sets of guide rings, the working chamber has been seted up to the inside of piston rod, the damping piece can remove to the inside of working chamber, the axle center department fixedly connected with little electric putter of working chamber, little electric putter's output fixedly connected with center seat, the week side fixedly connected with of center seat is three with the ball ejector pad that the damping piece is relative.

Further, a magnetic sheet which is attracted with the guide ring magnetically is fixedly connected to the damping block.

Further, the inner sleeve is made of manganese steel or carbon steel.

The technical effect who this practicality obtained is:

The utility model discloses a stand wear and tear spring damper is through the position to the rotation of inner skleeve adjust the inner skleeve, and the great frictional force that produces when letting the different positions of inner skleeve bear the shock attenuation can make the wearing and tearing of each position of inner skleeve comparatively even, reduces the life reduction phenomenon that the bumper shock absorber produced because of one side excessive wear when using.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic view of the present utility partially cut-away;

FIG. 3 is a schematic view of the present utility in whole cut-away configuration;

FIG. 4 is an enlarged view of the present invention taken at A in FIG. 3;

fig. 5 is a cut-away top view of the present invention at a in fig. 3.

In the drawings, the list of components represented by the various numbers is as follows:

1. A first bracket; 2. a second bracket; 3. an outer sleeve; 4. an inner sleeve; 5. a piston rod; 6. a damping portion; 7. a damping spring; 8. a motor; 9. a pinion gear; 10. tooth sockets; 11. a working chamber; 12. a guide ring; 13. a damping block; 14. a magnetic sheet; 15. a small electric push rod; 16. a center seat; 17. ball pushing block.

Detailed Description

In order to make the objects and advantages of the present invention more apparent, the present invention will be described in detail with reference to the following examples. It should be understood that the following text is used to describe only one or more specific embodiments of the present invention and does not strictly limit the scope of protection of the specific claims.

As shown in fig. 1-3, a wear-resistant spring shock absorber comprises a first bracket 1 and a second bracket 2, wherein an outer sleeve 3 is fixedly connected to the first bracket 1, a rotatable inner sleeve 4 is assembled in the outer sleeve 3, the inner sleeve 4 is made of wear-resistant materials such as manganese steel or carbon steel, a piston rod 5 is fixedly connected to the second bracket 2, the piston rod 5 can slide into the inner sleeve 4, a damping part 6 is assembled at one end of the piston rod 5 positioned in the inner sleeve 4, and a shock absorbing spring 7 is assembled between the first bracket 1 and the second bracket 2 and positioned outside the outer sleeve 3 and the inner sleeve 4;

At this time, when the first bracket 1 and the second bracket 2 vibrate, vibration of the first bracket can be damped through the cooperation of the damping spring 7 and the damping part 6, and as the vehicle moves, the wheel can apply a backward thrust to the lower part of the piston rod 5, so that one side of the damping part 6, which is in front of the inner sleeve 4, is in contact with the position, which is in front of the inner sleeve 4, and abrasion is relatively large relative to other positions, in order to ensure that the abrasion of each position of the inner sleeve 4 is relatively uniform, the inner sleeve 4 can be rotated through rotating the inner sleeve 4, and the rest positions of the inner sleeve 4 are rotated to be in contact with the damping part 6, so that the service life reduction phenomenon of the shock absorber caused by excessive abrasion of one side during use can be reduced.

The rotation of the inner sleeve 4 can be manual rotation or electric rotation, in the technical scheme, the electric rotation is preferred, the electric rotation is particularly characterized in that a motor 8 is fixedly connected to the outer sleeve 3, a pinion 9 is fixedly connected to the output end of the motor 8, a tooth socket 10 which is in meshed connection with the pinion 9 is formed in the outer side of the inner sleeve 4, at the moment, the pinion 9 can be driven to rotate by starting the motor 8, and the inner sleeve 4 can be driven to rotate by the tooth socket 10 when the pinion 9 rotates, so that the position of the inner sleeve 4 is regulated.

As shown in fig. 3-5, the structure of the damping portion 6 is disclosed in detail herein, specifically, the damping portion 6 includes two groups of damping blocks 13, the number of each group of damping blocks 13 is three, and the same group of three damping blocks 13 is in an annular array, the damping blocks 13 include an expanding state and a contracting state, the damping blocks 13 are in transition fit with the inner sleeve 4 in the expanding state, that is, the damping blocks 13 can slide in the inner sleeve 4 and weaken axial movement force in the sliding process, the damping blocks 13 have larger gaps between the contracting state and the inner sleeve 4, the damping blocks 13 can be switched between the expanding state and the contracting state, the two groups of damping blocks 13 are respectively in the expanding state and the contracting state, when one damping block 13 is in the expanding state, the damping blocks 13 can be used normally, and after the damping blocks 13 are used for a period of time, the damping blocks 13 are replaced, and by alternately using the two groups of damping blocks 13 to work, so that the service life of the damping portion 6 can be prolonged, and the continuous high wear of the damping blocks 13 can be reduced due to the long-time continuous use.

The upper part of the piston rod 5 is fixedly connected with two groups of guide rings 12 matched with the damping blocks 13, the two groups of damping blocks 13 are respectively and slidably connected in the two groups of guide rings 12, a working cavity 11 is formed in the piston rod 5, the damping blocks 13 can move into the working cavity 11, a small electric push rod 15 is fixedly connected to the axis of the working cavity 11, the output end of the small electric push rod 15 is fixedly connected with a center seat 16, three ball push blocks 17 opposite to the damping blocks 13 are fixedly connected to the periphery of the center seat 16, when the ball push blocks 17 are abutted against the damping blocks 13, the damping blocks 13 are in an outward expansion state, and when the damping blocks 13 are not abutted against the ball push blocks 17, the damping blocks 13 are in a contraction state, and at the moment, the small electric push rod 15 drives the ball push blocks 17 to move so that the ball push blocks 17 are abutted against the other damping blocks 13, and the switching of the damping blocks 13 can be completed;

The small electric push rod 15 is only a device for driving the center seat 16 to linearly move, and may be other linear moving devices.

Meanwhile, in order to enable the damping block 13 in the contracted state to automatically contract and enter the working cavity 11, the damping block 13 is fixedly connected with a magnetic sheet 14 which is magnetically attracted with the guide ring 12, and the damping block 13 can be driven to move through magnetic force between the guide ring 12 and the magnetic sheet 14.

The working principle of the utility model is as follows: when the first bracket 1 and the second bracket 2 vibrate, vibration of the first bracket can be damped through the cooperation of the damping spring 7 and the damping part 6, and as the vehicle moves, the wheels can apply backward thrust to the lower part of the piston rod 5, so that one side of the damping part 6, which is in front, is in contact with the position of the inner sleeve 4, the abrasion is relatively large relative to other positions, and in order to ensure that the abrasion of all positions of the inner sleeve 4 is relatively uniform, the inner sleeve 4 can be rotated, and the rest positions of the inner sleeve 4 are rotated to be in contact with the front side of the damping part 6.

To sum up, through the position to the rotation of inner skleeve 4 in this technical scheme adjusts inner skleeve 4, let the great frictional force that produces when the different positions of inner skleeve 4 bear the shock attenuation, can make the wearing and tearing of each position of inner skleeve 4 comparatively even, reduce the life reduction phenomenon that the bumper shock absorber produced because of one side excessive wear when using.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention. Structures, devices and methods of operation not specifically described and illustrated in the present application are all implemented by conventional means in the art unless specifically indicated and limited.

Claims (6)

1. The utility model provides a stand-by spring damper, includes support one (1) and support two (2), its characterized in that: the novel damping device comprises a first support (1), an outer sleeve (3) is fixedly connected to the first support (1), a rotatable inner sleeve (4) is assembled in the outer sleeve (3), a piston rod (5) is fixedly connected to a second support (2), the piston rod (5) can slide to the inner sleeve (4), a damping part (6) is assembled at one end of the piston rod (5) located in the inner sleeve (4), and a damping spring (7) is assembled between the first support (1) and the second support (2) and outside the outer sleeve (3) and the inner sleeve (4).

2. A wear resistant spring damper in accordance with claim 1 wherein: the motor (8) is fixedly connected to the outer sleeve (3), the pinion (9) is fixedly connected to the output end of the motor (8), and a tooth socket (10) which is in meshed connection with the pinion (9) is formed in the outer side of the inner sleeve (4).

3. A wear resistant spring damper in accordance with claim 1 wherein: the damping portion (6) comprises two groups of damping blocks (13), the number of each group of damping blocks (13) is three, the same group of damping blocks (13) are in an annular array, each damping block (13) comprises an outward expansion state and a contraction state, the damping blocks (13) can be switched between the outward expansion state and the contraction state, and the two groups of damping blocks (13) are in the outward expansion state and the contraction state respectively.

4. A wear resistant spring damper in accordance with claim 3 wherein: the novel hydraulic damper is characterized in that two groups of guide rings (12) matched with damping blocks (13) are fixedly connected to the upper portion of the piston rod (5), the two groups of guide rings (12) are respectively and slidably connected with the damping blocks (13), a working cavity (11) is formed in the piston rod (5), the damping blocks (13) can move to the inside of the working cavity (11), a small electric push rod (15) is fixedly connected to the axis of the working cavity (11), a center seat (16) is fixedly connected to the output end of the small electric push rod (15), and three ball push blocks (17) opposite to the damping blocks (13) are fixedly connected to the periphery of the center seat (16).

5. A wear resistant spring damper in accordance with claim 4 wherein: and a magnetic sheet (14) which is magnetically attracted with the guide ring (12) is fixedly connected to the damping block (13).

6. A wear resistant spring damper in accordance with claim 1 wherein: the inner sleeve (4) is made of manganese steel or carbon steel.