CN209762101U - Mechanical shock absorber - Google Patents

Abstract

The utility model relates to the field of shock absorbers, in particular to a mechanical shock absorber, which mainly solves the problem of poor durability of the mechanical shock absorbers in the prior art and comprises a base, wherein a piston cylinder is arranged on the base, the other end of the piston cylinder is provided with a sealing cover, a piston rod is arranged in the piston cylinder, one end of the piston rod penetrates out of the sealing cover and is provided with a mounting seat, one end of the piston rod, which is positioned in the piston cylinder, is provided with a piston, a first spring is arranged at the bottom of the piston and the piston cylinder in the piston cylinder, the middle part of the piston rod is provided with an accommodating cavity along the axial direction, the side wall of the piston rod is provided with through holes, a supporting plate is arranged in the accommodating cavity, the outer surface of the supporting plate is provided with a connecting rod corresponding to each through hole, the outer end of the connecting rod penetrates out of the through hole and, so that the wear block abuts against the inner surface of the piston cylinder.

Description

Mechanical shock absorber

Technical Field

The utility model relates to a shock absorber field especially relates to a mechanical type shock absorber.

Background

The shock absorber buffers the impact force transmitted to the frame or the vehicle body from the uneven road surface and attenuates the shock caused by the impact force so as to ensure that the vehicle can run smoothly. When the impact force of the road to the wheels is transmitted to the springs, the springs deform to absorb the kinetic energy of the wheels and convert the kinetic energy into potential energy (potential energy) of the springs, so that the influence of the impact of the ground on the vehicle body is alleviated. However, the spring does not consume energy, and the spring storing the potential energy restores the original shape to change the potential energy into kinetic energy again. If the spring is used alone without a shock absorbing element, some light vehicles will continue to move up and down after an impact as a acrobatic actor "bounces". Currently, most of the vibration absorbing elements used in suspension structures are hydraulic or pneumatic shock absorbers, which are mainly used to suppress the shock when the spring absorbs the shock and then rebounds and the impact from the road surface. When the shock absorber passes through an uneven road surface, although the shock absorbing spring can filter the shock of the road surface, the spring can still reciprocate, the shock absorber is used for inhibiting the spring from jumping, and the shock absorber has the defect that the shock absorbing effect is ineffective due to oil leakage when the shock absorber is not used properly.

Chinese patent No.: 201120523143.2 discloses a mechanical shock absorber, including digging arm, drive mechanism and fix the support frame on the car axle, the upper end and the car frame fixed connection of digging arm, its lower extreme and drive mechanism swing joint, drive mechanism arranges in between support frame and the digging arm, drive mechanism is screw drive mechanism's both sides respectively are equipped with a structure the same and play resistance's first friction pack and second friction pack, and screw drive mechanism links to each other through the gear external toothing who locates in its lower extreme first cylindrical gear and the first friction pack and the second friction pack. The shock absorber adopts a mechanical transmission structure, so that the bumping impact force generated by the uneven road surface of the running automobile is increased or reduced by adjusting the elastic force between the friction plate and the friction column in the friction assembly, and the impact kinetic energy is converted into heat energy to be released, thereby greatly relieving the bumping of the running automobile; however, the height of the movable arm is adjusted by the matching of the screw rod and the screw nut, so that the compression of the screw spring is changed, and the force transmitted to the movable arm acts on the screw rod and the screw nut in the movement of the frame of the automobile, so that the metal fatigue damage is caused, and the durability is poor.

SUMMERY OF THE UTILITY MODEL

therefore, to the above-mentioned problem, the utility model provides a mechanical shock absorber, it has mainly solved the poor problem of durability of mechanical shock absorber among the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

A mechanical shock absorber comprises a base, a piston cylinder is arranged on the base, a sealing cover is arranged at the other end of the piston cylinder, a piston rod is arranged in the piston cylinder, one end of the piston rod penetrates through the sealing cover and is provided with a mounting seat, one end of the piston rod, which is positioned in the piston cylinder, is provided with a piston, a first spring is arranged in the piston cylinder and at the bottom of the piston cylinder, a cavity is arranged in the middle of the piston rod along the axial direction, the side wall of the piston rod is provided with a plurality of through holes communicated with the containing cavity, a supporting plate is arranged in the containing cavity, the outer surface of the supporting plate is provided with a connecting rod corresponding to each through hole, the outer end of the connecting rod penetrates through the through hole and is provided with a wear-resistant block, and a second spring is arranged between the wear-resistant block and the piston rod on the connecting rod, so that the wear-resistant block is abutted against the inner surface of the piston cylinder.

Furthermore, at least two conical supporting blocks are arranged on the inner surface of the supporting plate along the axial direction of the piston rod, a threaded rod is arranged in the accommodating cavity, one end of the threaded rod penetrates out of the mounting seat, the threaded rod is in threaded connection with the mounting seat, and an adjusting ring used for being matched and adjusted with the supporting blocks is arranged on the threaded rod and corresponds to the supporting blocks.

Furthermore, the sealing cover is provided with connecting holes at the periphery of the piston cylinder, an auxiliary shock-absorbing rod is arranged on the mounting seat and penetrates through the connecting holes, a positioning block is in threaded connection with the free end of the auxiliary shock-absorbing rod, and a third spring is arranged between the sealing cover and the positioning block on the auxiliary shock-absorbing rod.

Furthermore, an exhaust hole is formed in one side, close to the base, of the piston cylinder.

By adopting the technical scheme, the beneficial effects of the utility model are that: the mechanical shock absorber enables the threaded rod to move in the axial direction of the piston rod by rotating the threaded rod, the adjusting ring on the threaded rod is matched with the supporting block, so that the position of the supporting plate is adjusted, the elastic potential energy of a second spring on the connecting rod is changed, the friction force between the wear-resisting block and the piston cylinder is further adjusted to be changed, after the shock absorber is stressed, the piston rod inwards compresses the first spring to move, the shock is further buffered, the wear-resisting block on the piston rod and the piston cylinder generate friction, the impact force is offset, the shock absorbing effect is achieved, the traditional structure of the shock absorber is combined with the mechanical friction, the friction force is buffered through the second spring, the wear resistance of the shock absorber is improved, and the quality of the shock absorber is improved; furthermore, after the shock absorber is stressed, the auxiliary shock absorbing rod and the piston rod move together through the mounting seat, and the shock absorption is assisted through the buffering effect of the third spring, so that the stress of the piston rod is reduced, and the durability is improved; furthermore, the exhaust hole that sets up on the piston cylinder, the air in the piston cylinder promotes through the piston and discharges for gaseous flow is even, and then makes the motion homogeneity of piston rod good, improves the travelling comfort of moving away to avoid possible earthquakes.

Drawings

FIG. 1 is a schematic cross-sectional structural view of an embodiment of the present invention;

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings and detailed description.

The embodiment of the utility model provides a do:

Referring to fig. 1 and 2, a mechanical shock absorber includes a base 1, a piston cylinder 2 is disposed on the base 1, an exhaust hole 3 is disposed on one side of the piston cylinder 2 close to the base 1, a sealing cover 4 is disposed at the other end of the piston cylinder 2, a piston rod 5 is disposed in the piston cylinder 2, one end of the piston rod 5 penetrates through the sealing cover 4 and is provided with a mounting seat 6, a piston 7 is disposed at one end of the piston rod 5 located in the piston cylinder 2, a first spring 8 is disposed at the bottom of the piston 7 and the piston cylinder 2 in the piston cylinder 2, a cavity 9 is disposed at the middle of the piston rod 5 along an axial direction, six through holes 10 communicated with the cavity 9 are disposed on a side wall of the piston rod 5, a supporting plate 11 is disposed in the cavity 9, a connecting rod 12 is disposed at a position corresponding to each through hole 10 on an outer surface of the supporting plate 11, an outer end of the connecting, a second spring 14 is arranged between the wear-resistant block 13 and the piston rod 5 on the connecting rod 12, so that the wear-resistant block 13 is abutted against the inner surface of the piston cylinder 2, three tapered supporting blocks 15 are arranged on the inner surface of the supporting plate 11 along the axial direction of the piston rod 5, a threaded rod 16 is arranged in the accommodating cavity 9, one end of the threaded rod penetrates out of the mounting seat 6, the threaded rod 16 is in threaded connection with the mounting seat 6, and an adjusting ring 17 used for being matched and adjusted with the supporting block 15 is arranged on the threaded rod 16 corresponding to the supporting block 15.

In this embodiment, a connection hole 18 is formed in the sealing cap 4 around the piston cylinder 2, an auxiliary shock absorbing rod 19 is disposed on the mounting base 6, the auxiliary shock absorbing rod 19 passes through the connection hole 18, a positioning block 20 is screwed to a free end of the auxiliary shock absorbing rod 19, and a third spring 21 is disposed on the auxiliary shock absorbing rod 19 between the sealing cap 4 and the positioning block 20.

the utility model discloses a working method is: according to the mechanical shock absorber, the threaded rod 19 is rotated to enable the threaded rod 19 to move in the axial direction of the piston rod 5, the adjusting ring 17 on the threaded rod 5 is matched with the supporting block 15, so that the position of the supporting plate 11 is adjusted, the elastic potential energy of the second spring 14 on the connecting rod 12 is changed, the friction force between the wear-resisting block 13 and the piston cylinder 2 is adjusted to be changed, after the shock absorber is stressed, the piston rod 5 inwards compresses the first spring 8 to move, impact is buffered, friction is generated between the wear-resisting block 13 on the piston rod 5 and the piston cylinder 2, impact force is offset, a shock absorbing effect is achieved, the traditional structure of the shock absorber is combined with mechanical friction, the friction force is buffered through the second spring 14, the wear resistance of the shock absorber is improved, and the quality of the shock absorber is improved; after the shock absorber is stressed, the auxiliary shock absorbing rod 19 and the piston rod 5 move together through the mounting seat 6, and the shock absorption is assisted through the buffering effect of the third spring 21, so that the stress of the piston rod 5 is reduced, and the durability is improved; the exhaust hole 3 that sets up on the piston cylinder 2, the air in the piston cylinder 2 promotes through piston 7 and discharges for gaseous flow is even, and then makes the motion homogeneity of piston rod 5 good, improves the travelling comfort of moving away to avoid possible earthquakes.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (4)

1. A mechanical shock absorber is characterized in that: the base is included, be provided with the piston barrel on the base, the other end of piston barrel is provided with the closing cap, be provided with the piston rod in the piston barrel, its one end is worn out the closing cap and is provided with the mount pad, the one end that lies in the piston barrel on the piston rod is provided with the piston, it is provided with first spring with the piston barrel bottom to lie in the piston barrel, the middle part of piston rod is provided with along axial direction and holds the chamber, be provided with a plurality of and the through-hole that holds the chamber intercommunication on the lateral wall of piston rod, hold the intracavity and be provided with the backup pad, be provided with the connecting rod with the corresponding department of each through-hole on the surface of backup pad, the through-hole is worn out and is provided with wear-resisting piece to the outer end of this.

2. The mechanical shock absorber of claim 1, wherein: the inner surface of the supporting plate is provided with at least two conical supporting blocks along the axial direction of the piston rod, a threaded rod is arranged in the accommodating cavity, one end of the threaded rod penetrates out of the mounting seat, the threaded rod is in threaded connection with the mounting seat, and an adjusting ring used for being matched with the supporting blocks to adjust is arranged on the threaded rod and corresponds to the supporting blocks.

3. A mechanical shock absorber according to claim 1 or 2, wherein: the sealing cover is provided with a connecting hole at the peripheral side of the piston cylinder, the mounting seat is provided with an auxiliary shock-absorbing rod, the auxiliary shock-absorbing rod penetrates through the connecting hole, the free end of the auxiliary shock-absorbing rod is in threaded connection with a positioning block, and a third spring is arranged between the sealing cover and the positioning block on the auxiliary shock-absorbing rod.

4. The mechanical shock absorber of claim 3, wherein: and one side of the piston cylinder, which is close to the base, is provided with an exhaust hole.