Built-in telescopic hydraulic oil pipe for supporting leg of engineering vehicle

Abstract

The invention discloses a built-in telescopic hydraulic oil pipe for a supporting leg of an engineering vehicle. The built-in telescopic hydraulic oil pipe comprises the transverse supporting leg, a first high-pressure hose is arranged on one side of the transverse supporting leg, one end of the first high-pressure hose is connected with a first seamless steel tube, and one end of the first seamless steel tube is connected with a second high-pressure hose. The built-in telescopic hydraulic oil pipe is scientific and reasonable in structure and safe and convenient to use; the transverse supporting leg is arranged, and by means of the action of the first high-pressure hose, the first seamless steel tube, the second high-pressure hose and a second seamless steel tube, the first high-pressurehose, the first seamless steel tube, the second high-pressure hose and the second seamless steel tube are arranged inside, so that the impact of the outside to the oil pipe is effectively avoided. Thefirst high-pressure hose, the first seamless steel tube, the second high-pressure hose and the second seamless steel tube can move in a sealing cavity, the aging failure time of the rubber oil pipe can be effectively prolonged, the attractiveness of the overall appearance of a vehicle is improved, the service life of the oil pipe is prolonged, and the cost is reduced. Due to the action of an oilway block, the direction of the second high-pressure hose is conveniently changed, and the second high-pressure hose is prevented from being broken in the direction change process.

Description

technical field [0001] The invention relates to the technical field of oil supply for a hydraulic cylinder of an engineering vehicle landing leg, in particular to a built-in retractable hydraulic oil pipe for an engineering vehicle outrigger. Background technique [0002] The oil pipe is a pipeline that transports crude oil and natural gas from the oil and gas layer to the surface after the drilling is completed. It is used to withstand the pressure generated during the mining process. It has a wide range of applications. The legs are stretched and stretched. During the working process of the hydraulic cylinder, the oil pipe needs to be connected with the hydraulic cylinder to provide the oil required for the hydraulic cylinder. The oil supply pipes of the existing engineering vehicle landing legs mostly use high-pressure rubber hoses. It is an external dragging type. When the lateral outriggers are extended, the oil pipe is in a straight line state. When the lateral outrigg...

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Problems solved by technology

[0002] The oil pipe is a pipeline that transports crude oil and natural gas from the oil and gas layer to the surface after the drilling is completed. It is used to withstand the pressure generated during the mining process. It has a wide range of applications. The legs are stretched and stretched. During the working process of the hydraulic cylinder, the oil pipe needs to be connected with the hydraulic cylinder to provide the oil required for the hydraulic cylinder. The oil supply pipes of the existing engineering vehicle landing legs mostly use high-pressure rubber hoses. It is an external dragging type. When the lateral outriggers are extended, the oil pipe is in a straight line state. When the lateral outriggers are retracted, the oil pipe is in a coiled state. The oil pipe in the lower coiled state of this structure is easy to scratch against foreign objects on the road when the vehicle is running. As a result, damage is caused, and the oil pipe is prone to aging due to wind and sun, which reduces its service life and increases costs. Therefore, there is an urgent need for a built-in retractable hydraulic oil pipe for the outriggers of engineering vehicles to solve the above problems

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