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Hydraulic rolling wheel device, telescopic supporting leg with hydraulic rolling wheel device and engineering machinery

A technology of telescopic outriggers and rollers, which is applied in the direction of casters, wheels, transportation and packaging, etc. It can solve the problems of unsmooth telescopic outriggers and large frictional resistance, and achieve the effect of improving the smoothness of telescopic and reducing the telescopic resistance

Pending Publication Date: 2021-07-23
XUZHOU XCMG CONSTR MACHINERY CO LTD BUILDING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The prior art has the following disadvantages: the overlapping points of the outriggers are steel-to-steel sliding friction. When the outriggers are longer and heavier, especially when the outriggers are non-linear (such as arc-shaped), the frictional resistance will be very high. Large, causing the outriggers to not stretch smoothly

Method used

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  • Hydraulic rolling wheel device, telescopic supporting leg with hydraulic rolling wheel device and engineering machinery
  • Hydraulic rolling wheel device, telescopic supporting leg with hydraulic rolling wheel device and engineering machinery
  • Hydraulic rolling wheel device, telescopic supporting leg with hydraulic rolling wheel device and engineering machinery

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Embodiment 1

[0030] like Figure 1-7 As shown, a hydraulic roller device includes a valve body 1, a piston rod 2, a rolling structure and a limiting device.

[0031] The valve body 1 is provided with a high-pressure oil chamber 3 , a supporting and guiding chamber 4 , an oil inlet 5 , and a pressure measuring port 6 . The high-pressure oil chamber 3 communicates with the supporting and guiding chamber 4 and is a stepped hole; the oil inlet 5 and the pressure measuring port 6 are both connected with the high-pressure oil chamber 3 . The rolling structure includes a roller 8 and a roller shaft 9; a rolling body 10 and a supporting inner ring 11 are arranged between the roller 8 and the roller shaft 9;

[0032] The valve body 1 is provided with a limiting device, the limiting device includes a limiting pin and a limiting pin hole, the limiting pin is installed in the limiting pin hole on the valve body, and passes through the hole on the piston rod. An oblong hole; the limit pin performs te...

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Abstract

The invention belongs to the field of engineering machinery, and relates to a hydraulic roller device, a telescopic supporting leg with the hydraulic roller device and engineering machinery, and the hydraulic roller device comprises a valve body, a piston rod, a rolling structure and a limiting device; the valve body is provided with a high-pressure oil cavity and a supporting and guiding cavity; the piston rod is installed in the valve body and can do telescopic motion relative to the valve body; a limiting device is arranged on the hydraulic roller device; the limiting device comprises a limiting pin and a limiting pin hole, the limiting pin hole is formed in the valve body, and an oblong hole is formed in the piston rod. The limiting pin is mounted in the limiting pin hole and penetrates through the oblong hole in the piston rod; the piston rod is telescopically limited by the limiting pin; the rolling structure is installed at the tail of the piston rod. The hydraulic roller device can be applied to the second lap joint point, full-rolling supporting is formed in the vertical face, the telescopic resistance of the supporting leg is greatly reduced, the telescopic smoothness is improved, and the two working conditions of the telescopic state and the working state of the supporting leg can be met at the same time.

Description

technical field [0001] The invention belongs to the field of construction machinery, and in particular relates to a hydraulic roller device, a telescopic support leg with the device and construction machinery. Background technique [0002] In order to meet the needs of engineering operations, most boom-type construction machinery such as wheeled cranes and concrete pump trucks are equipped with multiple outriggers. When the construction machinery is walking, the outriggers are retracted; when the construction machinery is working, the outriggers are opened to form a stable support for the whole vehicle. [0003] The outriggers are mainly telescopic outriggers. Taking the first-stage telescopic outrigger as an example, it includes a base frame and a telescopic outrigger sleeved in the base frame. A slideway is provided in the base frame, and the telescopic outrigger can slide in the slideway. Sliding frictional resistance is generated between the telescopic outrigger and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60S9/02B60B33/06
CPCB60S9/02B60B33/063
Inventor 王艳芬白建军沈千里王洪玉亢晨钢
Owner XUZHOU XCMG CONSTR MACHINERY CO LTD BUILDING MACHINERY
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