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Travelable supporting leg device of all-terrain crane

A crane and all-terrain technology, which is applied in the direction of cranes, etc., can solve the problems of limiting all-terrain cranes' hoisting capacity, carrying capacity and anti-overturning ability, and achieve the goal of increasing the driving weight and enhancing the anti-overturning ability Effect

Inactive Publication Date: 2013-07-10
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this structure is that the load-carrying capacity and anti-rolling capacity of the tires and oil-pneumatic suspension of the all-terrain crane chassis are limited, which limits the lifting capacity of the all-terrain crane

Method used

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  • Travelable supporting leg device of all-terrain crane
  • Travelable supporting leg device of all-terrain crane
  • Travelable supporting leg device of all-terrain crane

Examples

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Embodiment Construction

[0012] In the case of heavy lifting operation, such as figure 1 and figure 2 As shown, the outrigger 1 of the crane transmits a part of the load to the road wheel 11 through the outrigger plate seat 3, the connecting plate 7, the slewing bearing 8, the bearing seat 9, and the bearing 10. Chassis tires share a certain load to improve the anti-rollover capability. At this time, the two two-position two-way electromagnetic reversing valves 18 in the hydraulic system of the outrigger cylinder are in the open state, so that the accumulator 19 communicates with the rodless chamber of the hydraulic cylinder 17, so that the high-level oil tank 20 and the hydraulic cylinder 17 are effectively connected. The rod cavity is connected, if the work site is uneven, the outrigger 1 can be stretched to a certain extent, and the vibration of the ground can be buffered; at the same time, since there is a distance e between the vertical centerline B of the walking wheel and the vertical centerl...

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Abstract

The invention discloses a travelable supporting leg device of an all-terrain crane and belongs to the technical field of all-terrain cranes. The travelable supporting leg device is characterized in that the lower end of a supporting leg of the all-terrain crane in the prior art is provided with a travelable supporting wheel device which has the following structure: the upper end of a supporting leg plate base is made into a concave spherical surface, a semisphere arranged at the lower end of the supporting leg is arranged in the concave spherical surface to realize sliding fit, and the upper part of the supporting leg plate base is fixedly connected through a close cover by using a bolt; and the bottom of the supporting leg plate base is connected with a disk-shaped connecting plate through a bolt, the lower part of the connecting plate is connected with a bearing block of a travelling wheel through a pivoting support, and the travelling wheel is arranged in the bearing block through a bearing. In an oil cylinder hydraulic system with a vertical supporting leg, a rod chamber oil circuit of a hydraulic oil cylinder is connected in series with a two-position two-way electromagnetic directional valve and also connected with a top petrol tank; and a rodless chamber oil circuit of the hydraulic oil cylinder is connected in series with a two-position two-way electromagnetic directional valve and also connected with an energy accumulator. The device can adapt to the lifting travelling operation and static lifting operation and used for improving the performance of the lifting travelling operation of the crane.

Description

technical field [0001] The invention belongs to the technical field of all-terrain cranes, and in particular relates to a walkable outrigger device of an all-terrain crane. Background technique [0002] All-terrain cranes not only have the function of using the outriggers to lift statically, but also have the function of lifting and driving. At present, the structure of all-terrain cranes used at home and abroad is that the bottom surface of the foot plate of the four outriggers is a flat shape. When the crane is performing static lifting, the four outriggers are grounded to support the crane for static lifting; when the crane is hoisting and driving, the four outriggers are put away from the ground, and the tires are used to carry the load. At this time, the crane's All weight is borne by the chassis. The disadvantage of this structure is that the tires and oil-pneumatic suspension of the all-terrain crane chassis have limited load-carrying capacity and anti-tipping ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/80
Inventor 张洪蔡言龙刘利宝
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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