CN215720514U

CN215720514U - Rubber spring type crankshaft vibration damper

Info

Publication number: CN215720514U
Application number: CN202121750198.7U
Authority: CN
Inventors: 李军; 沈张杰; 苏春霞
Original assignee: Hebei Dena V Wheel Co ltd
Current assignee: Hebei Dena V Wheel Co ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2022-02-01
Anticipated expiration: 2031-07-29

Abstract

The utility model belongs to the technical field of crankshaft damping, and discloses a rubber spring type crankshaft damper, which comprises a sealing cover and a shell, wherein the sealing cover and the shell are fixedly butted through screws to form a sealing cavity, a damper body and a sealing disc are fixedly arranged in the sealing cavity, fixed frames are fixedly arranged on the inner sides between the damper body and the sealing disc, and a rubber block and a spring piece are movably clamped in the fixed frames. The two end arc-shaped pieces and the rubber block are elastically deformed together, and the rolling mechanism cannot pass through a gap between the middle arc-shaped pieces at the two sides, so that the rolling mechanism can be subjected to the elastic force of resilience from the spring piece and the rubber block after stopping to move in the direction, the rolling mechanism rotates in the direction to impact the spring piece at the other side, the torsional energy of the crankshaft is gradually reduced in reciprocation, the abrasion caused by the rolling friction of the roller is extremely small, the roller is not easy to damage, and the service life of the whole crankshaft damper is greatly prolonged.

Description

Rubber spring type crankshaft vibration damper

Technical Field

The utility model belongs to the technical field of crankshaft damping, and particularly relates to a rubber spring type crankshaft damper.

Background

The crankshaft damper is used to damp torsional vibration of the crankshaft, and is generally installed at the front end of the crankshaft, and it can gradually dissipate torsional energy of the crankshaft to the motion of internal parts of the crankshaft damper, so as to gradually reduce torsional amplitude of the crankshaft.

The existing rubber spring type crankshaft damper generally drives an inner damper body and an inertia body to synchronously rotate at a constant speed through the rotation of a crankshaft, when braking occurs, a speed difference is generated between the inertia body and the damper body, so that a spring piece clamped in the damper body and an inertia body support can twist, kinetic energy is absorbed through elastic deformation of a spring piece, and torsional energy generated by the crankshaft is offset.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems, and provides a rubber spring type crankshaft damper which has the advantages of improving energy dissipation efficiency, improving the working stability of the crankshaft damper and prolonging the service life of the crankshaft damper.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a bent axle shock absorber of rubber spring formula, includes closing cap and shell and between the two through the fixed sealed chamber that forms of screw butt joint, sealed intracavity fixed mounting has the shock absorber body and seals the dish, the equal fixed mounting in inboard between the shock absorber body and the dish of sealing has the mount, the inside activity joint of mount has block rubber and spring leaf, the both ends opening part of mount has the mounting to realize the shutoff through fixed mounting the mounting, the shock absorber body is equipped with the inertial body with the periphery cover that seals the dish, the interior anchor ring fixed mounting of inertial body has rolling mechanism and rolling mechanism to extend to and is located between two spring leaves of the shock absorber body and a dish.

As a preferable technical scheme of the utility model, the rolling mechanism comprises a mounting frame, one side of each of two spring pieces facing the mounting frame is movably provided with a roller, when the inertial body rotates relative to the damper body and the seal disc, the rotation of the inertial body drives the rolling mechanism to rotate together, and then the mounting frame and the rollers move towards a crack between the two spring pieces on the damper body and the seal disc.

As a preferred technical scheme of the utility model, the two outer ring edges of the inertia body are fixedly clamped with the wear-eliminating rings, the inner rings of the wear-eliminating rings are movably sleeved on the peripheries of the damper body and the seal disc, the outer ring surfaces of the wear-eliminating rings are contacted with the inner cavity wall of the shell, the inertia body clamped at the inner side is prevented from being directly contacted with the inner cavity wall of the shell, the damper body and the outer peripheral surface of the seal disc when the wear-eliminating rings act at the positions, the abrasion of the inertia body surface and the performance are prevented from being influenced due to the abrasion of the inertia body surface when relative rotation occurs, and the inertia body cannot be directly contacted with other components due to the isolation of the wear-eliminating rings, so that the abrasion of the inertia body is avoided.

As a preferred technical scheme of the utility model, the spring piece comprises a middle arc piece, two ends of the middle arc piece are respectively provided with two end arc pieces which are inclined downwards, two sides of the bottom of the middle arc piece are respectively provided with an extending edge which can be clamped into the fixing frame, the extending edges are pressed by the rubber block and can be tightly clamped in the inner cavity of the fixing frame, the roller of the rolling mechanism finally contacts with the two end arc pieces and the middle arc piece when the rolling mechanism rotates, and the spring piece is arranged on the damper body and the sealing disc, so that the two rollers on the rolling mechanism can respectively contact with the two spring pieces.

As a preferable technical scheme of the utility model, the maximum straight-line distance of the outer peripheral surfaces of the two rollers on the mounting frame is smaller than the minimum distance between the two spring pieces respectively positioned on the damper body and the sealing disc, the minimum distance between the two spring pieces is the distance between the two middle arc-shaped pieces, when the rolling mechanism rotates towards the middle arc piece along the two end arc pieces, the rollers on the two sides can extrude the two end arc pieces all the way, the two end arc pieces can compress the rubber block to deform under the action of extrusion force, the elastic potential energy of the rubber block can store part of kinetic energy from the inertial body and the rolling mechanism, when the rolling mechanism continues to compress the arc-shaped pieces at the two ends and is close to the arc-shaped piece at the middle part, the crack between the arc-shaped pieces at the middle parts at the two sides is too small to pass through, at the moment, the elastic potential energy of the rubber block is released, and the roller is extruded in the direction to retreat, so that the process finishes the absorption of the kinetic energy.

As a preferred technical scheme of the present invention, the extension directions of the fixed frame, the rubber block, the spring plate and the seal plate are concentric circles, four sets of structures composed of the fixed frame, the rubber block, the spring plate and the seal plate are equally spaced on the damper body and the seal plate, and four sets of rolling mechanisms are equally spaced on the inner ring surface of the inertial body.

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

1. the elastic energy absorption structure consisting of the fixed frame, the rubber block, the spring piece and the sealing piece is matched with the inertial body and the roller which is caused by the rotation of the rolling mechanism to extrude the spring piece, so that the arc pieces at two ends and the rubber block are elastically deformed together, and the rolling mechanism cannot pass through a crack between the arc pieces at the middle parts of two sides, so that the rolling mechanism can be elastically deformed by the resilience of the spring piece and the rubber block after stopping, and the rolling mechanism moves in the direction, so that the rolling mechanism rotates in the direction to impact the spring piece at the other side, the torsion energy of a crankshaft is gradually reduced in reciprocation, the abrasion caused by the rolling friction of the roller is extremely small, the roller is not easily damaged, and the service life of the whole crankshaft damper is greatly prolonged.

2. The extension directions of the fixed frame, the rubber block, the spring piece and the sealing piece are set to be a concentric circle, and the rolling mechanism and the spring piece rotate along the track of the concentric circle when the rolling mechanism and the spring piece generate relative displacement, so that the roller can be ensured to always prop against the tops of the cambered surfaces of the arc-shaped pieces at two ends when in contact with the spring piece, the spring piece can be uniformly stressed, the spring piece and the rubber block seal the opening of the fixed frame through the sealing piece, the rubber block and the spring piece can not be positioned on the fixed frame, and the stability of internal parts of the crankshaft damper is enhanced.

Drawings

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

FIG. 2 is a side view of the internal structure of the present invention;

FIG. 3 is an exploded view of the interior of the capsule according to the present invention;

FIG. 4 is an exploded view of the mount, rubber block and spring plate of the present invention;

FIG. 5 is a schematic structural view of the fixing frame and the sealing sheet of the present invention;

FIG. 6 is a schematic cross-sectional view of the fixing frame, the rubber block and the spring plate of the present invention;

FIG. 7 is a schematic view of the spring plate of the present invention.

In the figure: 1. sealing the cover; 2. a housing; 3. a wear ring is eliminated; 4. an inertial body; 5. a rolling mechanism; 51. a mounting frame; 52. a roller; 61. a damper body; 62. sealing the disc; 7. a fixed mount; 8. a rubber block; 9. a spring plate; 91. a middle arc piece; 92. two ends of the arc sheet; 93. extending the edge; 10. and (6) sealing the sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.

As shown in fig. 1 to 7, the utility model provides a rubber spring type crankshaft damper, which comprises a sealing cover 1 and a housing 2, wherein the sealing cover 1 and the housing 2 are fixedly butted and fixed through screws to form a sealed cavity, a damper body 61 and a sealing disc 62 are fixedly installed in the sealed cavity, a fixed frame 7 is fixedly installed on the inner side between the damper body 61 and the sealing disc 62, a rubber block 8 and a spring leaf 9 are movably clamped in the fixed frame 7, openings at two ends of the fixed frame 7 are sealed through fixedly installing sealing pieces 10, an inertial body 4 is sleeved on the peripheries of the damper body 61 and the sealing disc 62, a rolling mechanism 5 is fixedly installed on the inner annular surface of the inertial body 4, and the rolling mechanism 5 extends to a position between the two spring leaves 9 of the damper body 61 and the sealing disc 62.

The rolling mechanism 5 comprises a mounting frame 51, one side of each of two spring strips 9 of the mounting frame 51 is movably provided with a roller 52, when the inertial body 4 rotates relative to the damper body 61 and the seal disc 62, the inertial body 4 rotates to drive the rolling mechanism 5 to rotate together, and then the mounting frame 51 and the rollers 52 move towards a gap between the two spring strips 9 on the damper body 61 and the seal disc 62.

Wherein, the two outer ring edges of the inertia body 4 are fixedly clamped with the wear-eliminating ring 3, the inner ring of the wear-eliminating ring 3 is movably sleeved on the peripheries of the damper body 61 and the seal disc 62, the outer ring surface of the wear-eliminating ring 3 is contacted with the inner cavity wall of the shell 2, the inertia body 4 clamped at the inner side is prevented from being directly contacted with the inner cavity wall of the shell 2, the damper body 61 and the outer peripheral surface of the seal disc 62 when the wear-eliminating ring 3 acts at the position, the influence on the performance caused by the abrasion of the surface of the inertia body 4 when relative rotation occurs is prevented, and the inertia body 4 can not be directly contacted with other parts due to the isolation of the wear-eliminating ring 3, so that the abrasion is avoided.

Wherein, the spring leaf 9 includes middle part arc piece 91, the both ends of middle part arc piece 91 all are equipped with the both ends arc piece 92 of downward sloping, the both sides of the bottom of middle part arc piece 91 all are equipped with can block into the inside extension limit 93 of mount 7, extension limit 93 receives the extrusion of rubber piece 8, can be tightly blocked in the inner chamber of mount 7, and its roller 52 of rolling mechanism 5 when rotating finally can contact with both ends arc piece 92 and middle part arc piece 91, because be equipped with spring leaf 9 on the bumper shock absorber body 61 and the closing disc 62, two rollers 52 on the rolling mechanism 5 can contact with two spring leaf 9 respectively.

Wherein, the maximum linear distance of the outer peripheral surfaces of the two rollers 52 on the mounting frame 51 is smaller than the minimum distance between the two spring strips 9 respectively located on the damper body 61 and the seal disc 62, the minimum distance between the two spring strips 9 is the distance between the two middle arc-shaped pieces 91, when the rolling mechanism 5 rotates along the two end arc-shaped pieces 92 to the middle arc-shaped pieces 91, the two side rollers 52 will press the two end arc-shaped pieces 92 all the way, the two end arc-shaped pieces 92 will be pressed to compress the rubber block 8 to deform, the elastic potential energy of the rubber block 8 will store a part of the kinetic energy from the inertial body 4 and the rolling mechanism 5, when the rolling mechanism 5 continues to compress the two end arc-shaped pieces 92 near the middle arc-shaped pieces 91, the kinetic energy will not pass through due to the crack between the two side middle arc-shaped pieces 91, and the elastic potential energy of the rubber block 8 will be too small at this time, and the roller 52 will be pressed to retract, this process completes the absorption of kinetic energy.

Wherein, the extension direction of the fixed mount 7, the rubber block 8, the spring leaf 9 and the seal piece 10 is a concentric circle, four groups are arranged on the structure composed of the fixed mount 7, the rubber block 8, the spring leaf 9 and the seal piece 10 at equal distance on the damper body 61 and the seal disc 62, and four groups are also arranged on the inner ring surface of the inertia body 4 of the rolling mechanism 5 at equal distance.

The working principle and the using process of the utility model are as follows:

the fixed mount 7, the rubber block 8, the spring leaf 9 and the sealing piece 10 form an elastic energy absorbing mechanism which can cooperate with the inertial body 4 and the rolling mechanism 5 sleeved on the outer peripheral surfaces of the shock absorber body 61 and the sealing disc 62 to act, when the crankshaft works at a constant speed initially, the inertial body 4, the rolling mechanism 5 and the elastic energy absorbing mechanism rotate at the same speed, when the crankshaft brakes, the elastic mechanism can synchronously decelerate with the crankshaft along with the shock absorber body 61 and the sealing disc 62, but the sleeved inertial body 4 and the external rolling mechanism 5 can continue to keep the original speed motion due to inertia, so a speed difference is formed between the rolling mechanism 5 and the spring leaf 9, the rolling mechanism 5 can rotate towards the middle arc-shaped piece 91 along the arc-shaped pieces 92 at the two ends, the rollers 52 at the two sides can extrude the arc-shaped pieces 92 at the two ends all the way, and the arc-shaped pieces 92 at the two ends can compress the rubber block 8 to deform under the extrusion force, the elastic potential energy of the rubber block 8 stores a part of kinetic energy from the inertial body 4 and the rolling mechanism 5, when the rolling mechanism 5 continues to compress the arc-shaped pieces 92 at the two ends to be close to the middle arc-shaped piece 91, the kinetic energy cannot pass through the middle arc-shaped piece 91 because the gap between the arc-shaped pieces 91 at the two sides is too small, the elastic potential energy of the rubber block 8 is released at the moment, the roller 52 is extruded in the direction to retreat, and the process finishes the absorption of the kinetic energy.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a bent axle shock absorber of rubber spring formula, includes closing cap (1) and shell (2) and between the two through the fixed sealed chamber that forms of screw butt joint, its characterized in that: sealed intracavity fixed mounting has the shock absorber body (61) and seals dish (62), the equal fixed mounting in inboard between the shock absorber body (61) and the dish (62) of sealing has mount (7), the inside activity joint of mount (7) has block rubber (8) and spring leaf (9), the both ends opening part of mount (7) has cover slip (10) to realize the shutoff through fixed mounting, the periphery cover of the shock absorber body (61) and the dish (62) of sealing is equipped with inertial body (4), the interior anchor ring fixed mounting of inertial body (4) has rolling mechanism (5) and rolling mechanism (5) to extend to being located between two spring leaf (9) of the shock absorber body (61) and the dish (62).

2. A sprung crankshaft damper as claimed in claim 1, characterized in that: the rolling mechanism (5) comprises an installation frame (51), and one side of each of the two sides of the installation frame (51) facing the spring piece (9) is movably provided with a roller (52).

3. A sprung crankshaft damper as claimed in claim 1, characterized in that: the two outer ring edges of the inertia body (4) are fixedly clamped with the wear-eliminating rings (3), the inner rings of the wear-eliminating rings (3) are movably sleeved on the peripheries of the vibration damper body (61) and the sealing disc (62), and the outer ring surfaces of the wear-eliminating rings (3) are in contact with the inner cavity wall of the shell (2).

4. A sprung crankshaft damper as claimed in claim 1, characterized in that: spring leaf (9) are including middle part arc piece (91), the both ends of middle part arc piece (91) all are equipped with both ends arc piece (92) of downward sloping, the both sides of the bottom of middle part arc piece (91) all are equipped with and can block into outside limit (93) of mount (7) inside.

5. A sprung crankshaft damper as claimed in claim 2, characterized in that: the maximum straight line distance of the outer peripheral surfaces of the two rollers (52) on the mounting frame (51) is smaller than the minimum distance between the two spring pieces (9) on the shock absorber body (61) and the sealing disc (62).

6. A sprung crankshaft damper as claimed in claim 1, characterized in that: the extension direction of mount (7), block rubber (8), spring leaf (9) and mounting (10) is a concentric circle, the structure that mount (7), block rubber (8), spring leaf (9) and mounting (10) are constituteed is equipped with four groups at equidistance on damper body (61) and closing disc (62), rolling mechanism (5) are equipped with four groups at the interior anchor ring of inertial body (4) equidistance also.