CN217713485U

CN217713485U - Shock attenuation hydraulic cylinder

Info

Publication number: CN217713485U
Application number: CN202221041528.XU
Authority: CN
Inventors: 许科伟; 孙华昌
Original assignee: Changzhou Wujin Anwei Hydraulic Manufacturing Co ltd
Current assignee: Changzhou Wujin Anwei Hydraulic Manufacturing Co ltd
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-11-01
Anticipated expiration: 2032-04-28

Abstract

The utility model relates to the technical field of hydraulic cylinders, in particular to a damping hydraulic cylinder, which comprises a cylinder body and a piston rod coaxially arranged in the cylinder body, wherein a clamp is sleeved outside the cylinder body, and a plurality of first damping mechanisms are arranged between the cylinder body and the clamp; the utility model provides a hydraulic cylinder with damping performance and long service life.

Description

Shock attenuation hydraulic cylinder

Technical Field

The utility model relates to a hydraulic cylinder technical field, in particular to shock attenuation hydraulic cylinder.

Background

The hydraulic oil cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and makes linear reciprocating motion (or swinging motion). When it is used to realize reciprocating motion, it can eliminate speed reducer and has no transmission gap, so that it can be extensively used in hydraulic systems of various machines. The hydraulic oil cylinder has various structural forms and various classification methods, wherein the hydraulic oil cylinder can be divided into a linear reciprocating motion type and a rotary swinging type according to the motion mode; according to the action of hydraulic pressure, the hydraulic pump can be divided into a single-acting type and a double-acting type; the structure can be divided into piston type, plunger type, multi-stage telescopic sleeve type, gear rack type and the like; the device can be divided into a pull rod, an earring, a bottom foot, a hinge shaft and the like according to the installation form.

The traditional hydraulic oil cylinder is greatly vibrated when in use, and internal parts of the traditional hydraulic oil cylinder are damaged by vibration if the traditional hydraulic oil cylinder is not subjected to shock absorption protection, so that the service life of the hydraulic oil cylinder is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defect and not enough that prior art exists, providing a hydraulic cylinder with damping performance and long service life.

Realize the utility model discloses the technical scheme of purpose is: a damping hydraulic oil cylinder comprises a cylinder body and a piston rod which is coaxially arranged in the cylinder body, wherein a hoop is sleeved outside the cylinder body, and a plurality of first damping mechanisms are arranged between the cylinder body and the hoop.

Furthermore, the first damping mechanism comprises two first support rods and a first elastic piece, the middle parts of the two first support rods are connected through the first elastic piece, one end of each first support rod is hinged to the cylinder body, and the other end of each first support rod is in rolling connection with the hoop.

Further, still include the backing plate, be equipped with second damper between clamp and the backing plate.

Further, second damper includes second bracing piece, slider and telescopic link, the one end and the clamp of second bracing piece are articulated, the other end and the slider of second bracing piece are articulated, the slider is embedded in the spout of backing plate, slider and spout sliding fit, the telescopic link is established between the lateral wall of slider and spout, the cover is equipped with the spring on the telescopic link.

Further, second damper includes slide bar and stand, the stand overcoat is in the bottom of slide bar, stand and slide bar sliding fit, the top and the clamp connection of slide bar, be equipped with the second elastic component between the bottom of slide bar and the bottom of stand.

Further, the first elastic member is a spring.

Further, the second elastic member is a spring.

After the technical scheme is adopted, the utility model discloses following positive effect has:

(1) The utility model realizes the damping of the cylinder body by arranging the first damping mechanism between the cylinder body and the hoop;

(2) The utility model discloses a set up second damper between clamp and backing plate, carry out the shock attenuation to the clamp to the realization is to the further shock attenuation of cylinder body.

Drawings

In order that the manner in which the present invention is made more readily and clearly understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, wherein:

fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic view of the clamp of the present invention;

fig. 4 is a schematic structural diagram of embodiment 2 of the present invention.

In the figure: the cylinder body 1, the piston rod 2, the clamp 3, go up arc 3a, lower arc 3b, first bracing piece 4a, first elastic component 4b, ball 4c, backing plate 5, spout 5a, second bracing piece 6a, slider 6b, telescopic link 6c, slide bar 7a, stand 7b, second elastic component 7c, amortization layer 8.

Detailed Description

Example 1

As shown in fig. 1-3, a shock absorption hydraulic cylinder comprises a cylinder body 1 and a piston rod 2 coaxially arranged in the cylinder body 1, a hoop 3 is sleeved outside the cylinder body 1, the cylinder body 1 and the hoop 3 are coaxially arranged, three first shock absorption mechanisms are uniformly arranged in the circumferential direction between the cylinder body 1 and the hoop 3, and shock absorption of the cylinder body 1 is achieved through the arrangement of the first shock absorption mechanisms. Specifically, the first damping mechanism comprises two first supporting rods 4a and a first elastic part 4b, the first elastic part 4b is a spring, the spring is in a stretching state, the middle parts of the two first supporting rods 4a are connected through the first elastic part 4b, one end of each first supporting rod 4a is hinged to the outer circumferential wall of the cylinder body 1, and the other end of each first supporting rod 4a is in rolling connection with the inner circumferential wall of the hoop 3. When the hydraulic oil cylinder is vibrated to enable the cylinder body 1 to move upwards, the cylinder body 1 extrudes the two first supporting rods 4a to enable the other ends of the two first supporting rods 4a to move back to back, and the spring between the two first supporting rods 4a plays a role in buffering and resetting the back to back movement of the two first supporting rods 4a, so that the damping of the cylinder body 1 is realized. Specifically, the other end of two first bracing pieces 4a is embedded respectively has ball 4c, and ball 4c rotates with first bracing piece 4a to be connected, and ball 4c contradicts with the circumference inner wall of clamp 3, through ball 4 c's setting, realizes the other end of first bracing piece 4a and the circumference inner wall roll connection of clamp 3 to the wearing and tearing between first bracing piece 4a and the clamp 3 have been reduced. Specifically, the clamp 3 includes an upper arc-shaped plate 3a and a lower arc-shaped plate 3b, the left ends of the upper arc-shaped plate 3a and the lower arc-shaped plate 3b are hinged to each other, and the right ends of the upper arc-shaped plate 3a and the lower arc-shaped plate 3b are fastened through bolts and nuts, and since the structure of the clamp 3 is the prior art, the structure will not be described in detail here. The utility model discloses still include backing plate 5, backing plate 5 is located clamp 3 under, is equipped with second damper between clamp 3 and the backing plate 5, and second damper symmetry sets up, through second damper's setting, carries out the shock attenuation to clamp 3 to the realization is to the further shock attenuation of cylinder body 1. Specifically, second damper includes second bracing piece 6a, slider 6b and telescopic link 6c, second bracing piece 6 a's one end is articulated with the circumference outer wall of clamp 3, second bracing piece 6 a's the other end is articulated with slider 6 b's top, slider 6b is embedded in the spout 5a in backing plate 5, spout 5a is located the both ends of backing plate 5, slider 6b and spout 5a sliding fit, telescopic link 6c establishes between slider 6b and spout 5 a's lateral wall, telescopic link 6 c's one end is connected with slider 6 b's lateral wall, telescopic link 6 c's the other end and spout 5 a's lateral wall are connected, the overcoat has the spring on telescopic link 6c, the one end of spring and slider 6 b's lateral wall support and lean on, the other end of spring supports with spout 5 a's lateral wall and leans on, the spring is in compression state. When the clamp 3 receives vibrations downstream, clamp 3 extrusion second bracing piece 6a makes slider 6b slide towards the both ends of backing plate 5 in spout 5a, and telescopic link 6c and the spring in the spout 5a play cushioning effect and reset action to slider 6 b's slip to the realization is to the shock attenuation of clamp 3, has further improved the shock attenuation effect to cylinder body 1. In addition, in order to absorb the noise generated by the vibration of the cylinder body 1, the circumferential inner wall of the hoop 3 is uniformly provided with a silencing layer 8, the silencing layer 8 is made of silencing cotton, and the silencing layer 8 and the first damping mechanism are mutually staggered.

Example 2

As shown in fig. 4, the difference between this embodiment and embodiment 1 lies in the structure of a second damping mechanism, in this embodiment, the second damping mechanism includes a sliding rod 7a and an upright post 7b, the upright post 7b is sleeved on the bottom end of the sliding rod 7a, the upright post 7b is in sliding fit with the sliding rod 7a, the top end of the sliding rod 7a is fixedly connected with the outer circumferential wall of the clamp 3, the bottom end of the upright post 7b is fixed on the backing plate 5, a second elastic member 7c is arranged between the bottom end of the sliding rod 7a and the inner wall of the bottom end of the upright post 7b, the second elastic member 7c is a spring, and the spring is in a compressed state. When the hoop 3 receives vibrations downstream, hoop 3 extrusion slide bar 7a makes slide bar 7a slide in stand 7b down, and the spring between the bottom of slide bar 7a and the bottom inner wall of stand 7b plays cushioning effect and reset action to slide bar 7 a's lapse to the realization is to the shock attenuation of hoop 3, has further improved the shock attenuation effect to cylinder body 1.

The above-mentioned embodiments, which further illustrate the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above-mentioned embodiments are only examples of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a shock attenuation hydraulic cylinder, includes cylinder body (1) and coaxial interior piston rod (2) of locating cylinder body (1), its characterized in that: the cylinder body (1) overcoat has clamp (3), be equipped with a plurality of damper between cylinder body (1) and clamp (3).

2. A shock absorbing hydraulic ram according to claim 1 wherein: first damper includes two first bracing pieces (4 a) and first elastic component (4 b), two the middle part of first bracing piece (4 a) is connected through first elastic component (4 b), the one end of first bracing piece (4 a) is articulated with cylinder body (1), the other end and clamp (3) roll connection of first bracing piece (4 a).

3. A shock absorbing hydraulic ram according to claim 1 or claim 2, wherein: still include backing plate (5), be equipped with second damper between clamp (3) and backing plate (5).

4. A shock absorbing hydraulic ram according to claim 3 wherein: second damper includes second bracing piece (6 a), slider (6 b) and telescopic link (6 c), the one end and the clamp (3) of second bracing piece (6 a) are articulated, the other end and slider (6 b) of second bracing piece (6 a) are articulated, slider (6 b) embedded spout (5 a) in backing plate (5), slider (6 b) and spout (5 a) sliding fit, establish between the lateral wall of slider (6 b) and spout (5 a) telescopic link (6 c), the cover is equipped with the spring on telescopic link (6 c).

5. A shock absorbing hydraulic ram according to claim 3 wherein: the second damping mechanism comprises a sliding rod (7 a) and an upright post (7 b), the upright post (7 b) is sleeved on the bottom end of the sliding rod (7 a), the upright post (7 b) is in sliding fit with the sliding rod (7 a), the top end of the sliding rod (7 a) is connected with the hoop (3), and a second elastic piece (7 c) is arranged between the bottom end of the sliding rod (7 a) and the bottom end of the upright post (7 b).

6. A shock absorbing hydraulic ram according to claim 2 wherein: the first elastic member (4 b) is a spring.

7. A shock absorbing hydraulic ram according to claim 5 wherein: the second elastic member (7 c) is a spring.