CN217297029U - Super-silent lifting device for crane cab - Google Patents
Super-silent lifting device for crane cab Download PDFInfo
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- CN217297029U CN217297029U CN202220337930.6U CN202220337930U CN217297029U CN 217297029 U CN217297029 U CN 217297029U CN 202220337930 U CN202220337930 U CN 202220337930U CN 217297029 U CN217297029 U CN 217297029U
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Abstract
Super-silent elevating gear in crane cab. Reasonable structure and stable operation. The hydraulic cylinder is arranged in the center of the bottom of the cab, the four supporting mechanisms are respectively arranged at the four peripheral corners of the bottom of the cab in a one-to-one correspondence manner, each supporting mechanism comprises a cylinder body, a piston and a piston rod, the piston and the piston rod penetrate through the cylinder body, the piston rod is in a hollow tubular shape, the piston is arranged at one end of the piston rod, a through hole is formed in the middle of the piston, and the inner diameter of the through hole is larger than the inner diameter of the piston rod and smaller than the outer diameter of the piston rod; and a spring is arranged between the bottom of the piston and the bottom of the cylinder body, and hydraulic oil is also arranged in the cylinder body.
Description
Technical Field
The utility model relates to a crane accessories technical field, concretely relates to crane cab super-silent elevating gear.
Background
The tire type crane is commonly called as a tire crane and refers to a movable arm rotating crane which runs by utilizing a tire type chassis; the tyre type crane is a full rotary crane with a hoisting mechanism installed on a special chassis consisting of a heavy duty tyre and a wheel shaft, the upper structure of the full rotary crane is basically the same as that of a crawler crane, and the crane is provided with four telescopic supporting legs in order to ensure the stability of a machine body during installation operation.
At present, in order to obtain better trafficability and a wider visual field range, a liftable cab structure is adopted, a plurality of jacking oil cylinders are generally adopted to lift the whole cab, the generated noise is high, and the stability needs to be improved.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a crane cab super-silent lifting device which is reasonable in structure and stable in operation.
The utility model discloses a following technical scheme realizes: the crane cab ultra-silent lifting device comprises a jacking mechanism and supporting mechanisms, wherein the jacking mechanism is a hydraulic cylinder, the hydraulic cylinder is arranged in the center of the bottom of a cab, the four supporting mechanisms are respectively and correspondingly arranged at the four peripheral corners of the bottom of the cab one by one, each supporting mechanism comprises a cylinder body, a piston and a piston rod, the piston and the piston rod are arranged in the cylinder body in a penetrating manner, the piston rod is in a hollow tubular shape, the piston is arranged at one end of the piston rod, a through hole is formed in the middle of the piston, and the inner diameter of the through hole is larger than the inner diameter of the piston rod and smaller than the outer diameter of the piston rod;
a spring is arranged between the bottom of the piston and the bottom of the cylinder body, and hydraulic oil is further arranged in the cylinder body.
The utility model discloses a preferred embodiment lies in, still be equipped with the perforated plate in the cylinder body, the perforated plate covers the perforation, the one end of spring with the bottom fixed connection of perforated plate, the other end of spring with the bottom fixed connection of cylinder body.
The utility model discloses a preferred embodiment lies in, the outer wall of piston with the inner wall laminating of cylinder body, the outer wall of perforated plate with there is the clearance between the inner wall of cylinder body, the external diameter of perforated plate is greater than fenestrate internal diameter.
The utility model discloses a preferred embodiment lies in, the liquid level of hydraulic oil is located the lower part of cylinder body, the liquid level height of hydraulic oil is greater than the maximum compression length of spring.
Compared with the prior art, the utility model has the advantages that in the working process, the piston rod can obtain the assistance force in the lifting process through the action of the spring and the hydraulic oil, so that the hydraulic cylinder can reliably jack up the cab; in the process that the hydraulic cylinder retracts and the cab descends, the spring and the hydraulic oil play a role in buffering on the one hand, and on the other hand play a role in energy storage, so that the piston and the piston rod can be reliably stopped, the structure is reasonable, the lifting process is stable, and the lifting noise is effectively reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the support mechanism;
in the figure: 1. a hydraulic cylinder; 2. a support mechanism; 21. a cylinder body; 22. a piston; 220. perforating; 23. a piston rod; 24. a spring; 25. hydraulic oil; 26. a perforated plate; 3. a cab; 4. a vehicle frame.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
As shown in fig. 1-2, the super-silent lifting device for a crane cab comprises a jacking mechanism, wherein the jacking mechanism is a hydraulic cylinder 1, the hydraulic cylinder 1 is arranged in the center of the bottom of the cab, the super-silent lifting device further comprises a support mechanism 2, the four support mechanisms 2 are respectively arranged at the four peripheral corners of the bottom of the cab in a one-to-one correspondence manner, the support mechanism 2 comprises a cylinder body 21, a piston 22 and a piston rod 23, the piston rod 23 is arranged in the cylinder body 21 in a penetrating manner, the piston 22 is arranged at one end of the piston rod 23, a through hole 220 is formed in the middle of the piston 22, and the inner diameter of the through hole 220 is larger than the inner diameter of the piston rod 23 and smaller than the outer diameter of the piston rod 23; the jacking mechanism and the supporting mechanism 2 are both arranged on the frame 4;
a spring 24 is arranged between the bottom of the piston 22 and the bottom of the cylinder body 21, and hydraulic oil 25 is further arranged in the cylinder body 21. The hydraulic cylinder 1 acts to lift the cab, and the hydraulic cylinder 1 is arranged in the center of the bottom of the cab, so that the cab can be stably lifted, and further, in the process of lifting the cab, the spring 24 releases energy to rebound, and assists in pushing the piston 22 and the piston rod 23 to move upwards, so that the working pressure of the hydraulic cylinder 1 is reduced, and the cab is lifted more stably; in the process of descending the cab, the piston rod 23 and the piston 22 are pushed to move towards the bottom of the cylinder body 21, so that the spring 24 is compressed, on one hand, the buffering effect and the energy storage effect are achieved, and in addition, as the cylinder body 21 below the piston 22 is communicated with the interior of the piston rod 23 through the through hole 220, when the piston rod 23 is pressed downwards, air below the piston 22 can be pressed into the piston rod 23, the compression resistance of the spring 24 is reduced, the spring 24 is ensured to be reliably compressed, and the buffering and energy storage effects are achieved; after the spring 24 compresses to a certain degree, the piston 22 can contact the hydraulic oil 25 and compress the hydraulic oil 25, so that further buffering and braking effects are achieved, the piston 22 and the piston rod 23 can be reliably stopped, the structure is reasonable, the lifting process is stable, and the lifting noise is effectively reduced.
Still be equipped with the perforated plate 26 in the cylinder body 21, the perforated plate 26 covers perforation 220, the one end of spring 24 with the bottom fixed connection of perforated plate 26, the other end of spring 24 with the bottom fixed connection of cylinder body 21. The perforated plate 26 serves to protect the piston 22, prevent the spring 24 from directly contacting the piston 22, generate hard compression, and cause excessive wear of the piston 22, and the perforated structure of the perforated plate 26 does not affect the air circulation.
The outer wall of piston 22 with the inner wall laminating of cylinder body 21, the outer wall of perforated plate 26 with there is the clearance between the inner wall of cylinder body 21, the external diameter of perforated plate 26 is greater than the internal diameter of perforation 220. In this way, the piston 22 and the perforated plate 26 can move up and down reliably, so that the compression action on the spring 24 and the hydraulic oil 25 is reliable, and the lifting of the cab is more stable.
The liquid level of the hydraulic oil 25 is located at the lower part of the cylinder body 21, and the height of the liquid level of the hydraulic oil 25 is larger than the maximum compression length of the spring 24. That is to say, before spring 24 is not compressed completely, piston 22 can contact with the liquid level of hydraulic oil 25, and because hydraulic oil 25 is more difficult to compress for piston 22 can stop before spring 24 is compressed completely, when guaranteeing the cushioning effect, has prevented effectively that the complete compression from causing the damage to spring 24, has guaranteed that buffering, energy storage effect are reliable.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (4)
1. The crane cab ultra-silent lifting device is characterized by further comprising supporting mechanisms, wherein the four supporting mechanisms are respectively arranged at the four peripheral corners of the bottom of the cab in a one-to-one correspondence mode, each supporting mechanism comprises a cylinder body, a piston and a piston rod, the piston and the piston rod penetrate through the cylinder body, the piston is arranged at one end of the piston rod, a through hole is formed in the middle of the piston, and the inner diameter of the through hole is larger than the inner diameter of the piston rod and smaller than the outer diameter of the piston rod;
and a spring is arranged between the bottom of the piston and the bottom of the cylinder body, and hydraulic oil is also arranged in the cylinder body.
2. The crane cab ultra-silent lifting device according to claim 1, wherein: still be equipped with the perforated plate in the cylinder body, the perforated plate covers the perforation, the one end of spring with the bottom fixed connection of perforated plate, the other end of spring with the bottom fixed connection of cylinder body.
3. The crane cab ultra-silent lifting device according to claim 2, wherein: the outer wall of piston with the inner wall laminating of cylinder body, the outer wall of perforated plate with there is the clearance between the inner wall of cylinder body, the external diameter of perforated plate is greater than fenestrate internal diameter.
4. The ultra-silent lifting device for crane cab according to claim 1, wherein: the liquid level of the hydraulic oil is located at the lower part of the cylinder body, and the liquid level height of the hydraulic oil is larger than the maximum compression length of the spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220337930.6U CN217297029U (en) | 2022-02-14 | 2022-02-14 | Super-silent lifting device for crane cab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220337930.6U CN217297029U (en) | 2022-02-14 | 2022-02-14 | Super-silent lifting device for crane cab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217297029U true CN217297029U (en) | 2022-08-26 |
Family
ID=82929744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220337930.6U Active CN217297029U (en) | 2022-02-14 | 2022-02-14 | Super-silent lifting device for crane cab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217297029U (en) |
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2022
- 2022-02-14 CN CN202220337930.6U patent/CN217297029U/en active Active
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