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Horizontal pinned hydraulic system of crawler crane counterweight

A technology of crawler crane and hydraulic system, applied in the field of hydraulic control system and crawler crane, can solve the problems of self-pulling out, crane body tilting, hidden dangers, etc. Effect

Inactive Publication Date: 2012-06-20
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method of positioning the counterweight in the horizontal direction is time-consuming, laborious, and unsafe, and accidents such as being injured by the counterweight when the driver plugs in may occur
Moreover, in the subsequent operations such as lifting and running with load, the counterweight pin may be loosened or pulled out by itself due to the tilting, shaking, and impact of the crane body, causing potential safety hazards.

Method used

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  • Horizontal pinned hydraulic system of crawler crane counterweight
  • Horizontal pinned hydraulic system of crawler crane counterweight

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Embodiment Construction

[0010] An embodiment of the present invention will be further described below in conjunction with accompanying drawing: (straighten out the following content)

[0011] The horizontal pinning hydraulic system of the crawler crane counterweight of the present invention is mainly composed of a variable pump 2, an oil tank 3, an oil filter 4, a three-position four-way electromagnetic reversing valve 6, a two-position three-way electromagnetic reversing valve 5, a hydraulic control unit Directional valve, pressure relay 10 and thread pin oil cylinder 11,8 constitute. The two pin-through cylinders 11 and 8 are arranged symmetrically on the vertical plate at the rear of the turntable of the crawler crane. The piston rod sides of the two pin-through cylinders 11 and 8 are respectively provided with travel switches for controlling the travel of the piston rods, and the travel switches are respectively fixed on the crawler belts. On the counterweight of the crane, the inlet pipelines of...

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PUM

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Abstract

The invention discloses a horizontal pinned hydraulic system of a crawler crane counterweight. The system comprises two pinned cylinders which are arranged symmetrically, a travel switch for controlling the travel of each piston rod is arranged on one side of the piston rod of each of the two pinned cylinders, rod cavity inlet pipelines of the two pinned cylinders are connected, rod-free cavity inlet pipelines of the two pinned cylinders are connected, a hydraulic control one-way valve is arranged on each of the rod cavity inlet pipelines, a hydraulic control one-way valve is arranged on each of the rod-free cavity inlet pipelines, each hydraulic control one-way valve is connected with a three-station four-way electromagnetic reversing valve through a pipeline, the oil inlet of the three-station four-way electromagnetic reversing valve is connected with a variable pump connected with an oil tank through a pipeline, a safety valve is connected to the outlet of the variable pump, and the oil outlet of the three-station four-way electromagnetic reversing valve is connected with a two-station three-way electromagnetic reversing valve connected with the oil tank through a pipeline. Stretching of the piston rods of the pinned cylinders is controlled through the hydraulic system, so that the piston rods of the pinned cylinders stretch, and the effect of horizontally locking the counterweight is achieved; and the system is simple in structure, time-saving, labor-saving, safe and high in reliability.

Description

technical field [0001] The invention relates to a hydraulic device for horizontal pinning of the counterweight of a crane, which is especially suitable for crawler cranes and belongs to the category of hydraulic control systems. Background technique [0002] Before using the crane to lift the weight, it is necessary to install the counterweight to the rear of the crane turntable to adjust the position of the center of gravity of the machine body and increase the anti-overturning moment of the machine body to meet the requirements of the strength of the slewing bearing of the crane and the stability of the whole machine, and prevent the hoisting Occurrence of a vehicle rollover accident. To locate the counterweight at the rear of the crane turntable structure, it is necessary to give the counterweight a certain amount of restraint in the vertical and horizontal directions to lock the counterweight and prevent it from shaking, so as to ensure the safety of subsequent operation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C13/20B66C23/74
Inventor 马皖朱真才陈国安訾斌邵杏国李一磊王重秋吴仁愿江帆张磊睢文文汤裕弓瑞敏胡松松
Owner CHINA UNIV OF MINING & TECH
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