Curve leveling control system and hydraulic system for railway crane
A technology of a hydraulic system and a control system, which is applied in the directions of cranes, load hanging elements, transportation and packaging, etc., can solve the problem that the lifting and operation cannot be carried out, the applicability of the railway crane 10 is reduced, and the railway crane 10 cannot reach the lifting capacity. and other problems to achieve the effect of improving reliability and stability, preventing oil leakage, and improving airtightness
Active Publication Date: 2019-04-05
CRRC QIQIHAR ROLLING CO LTD
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Problems solved by technology
In the above-mentioned inclined state, the railway crane 10 cannot reach the rated lifting capacity, and cannot carry out hoisting and operations, which reduces the applicability of the railway crane 10
Method used
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[0034] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0035] Please refer to Figure 4 , Figure 4 It is a schematic diagram of a specific embodiment of a curve leveling hydraulic system and a leveling locking hydraulic system for a railway crane provided by the present invention.
[0036] The present invention provides a curve leveling control system for railway cranes, which includes a curve leveling hydraulic system, the mechanism includes a leveling oil cylinder 1, and the leveling oil cylinder 1 has a first working chamber 11, a second working chamber 13, a piston 12 and piston rod 14, from Figure 4 and Figure 6 It can be seen from the figure that the piston rod 14 of the leveling cylinder 1 is a double-headed piston rod, and the piston rod 14 is fixedly connected ...
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The invention discloses a curve leveling control system and hydraulic system for a railway crane. The curve leveling hydraulic system comprises a leveling oil cylinder and a main reversing valve; theleveling oil cylinder comprises a double-head piston rod connected with a chassis of the railway crane and comprises a first working cavity and a second working cavity; the main reversing valve is used for switching connection and disconnection of the first working cavity and the second working cavity with an oil inlet way and an oil return way; a first hydraulically-controlled check valve is arranged between the first working cavity and the main reversing valve; a second hydraulically-controlled check valve is arranged between the second working cavity and the main reversing valve; during leveling, the first hydraulically-controlled check valve and the second hydraulically-controlled check valve are put through; and after leveling ends, the first hydraulically-controlled check valve and the second hydraulically-controlled check valve are cut off in one direction. A curve leveling mechanism of the railway crane is controlled by the curve leveling hydraulic system, so that the chassis of the railway crane is adjusted from the inclined state to the horizontal state; and oil inside the leveling oil cylinder is prevented from leaking by the aid of the hydraulically-controlled check valves, so that the reliability and the stability of the curve leveling hydraulic system are improved.
Description
technical field [0001] The invention relates to the field of cranes, in particular to a curve leveling control system for railway cranes and a curve leveling hydraulic system thereof. Background technique [0002] Railway cranes are mainly used for railway rescue, to meet the rescue needs of locomotives and vehicles derailed, overturned and other accidents, and to ensure the safe operation of railways. [0003] Please refer to Figure 1-3 , figure 1 It is a structural schematic diagram of an existing railway crane; figure 2 for figure 1 Schematic diagram of the structure of the center plate; image 3 for figure 1 Schematic diagram of part of the structure of the crane passing through the curve section of the railway in China. [0004] The existing railway crane 10 is mainly composed of an upper body revolving part 20, an underframe 30 and a bogie 40. The upper body revolving part 20 is rigidly connected to the underframe 30, and the underframe 30 and the bogie 40 pa...
Claims
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IPC IPC(8): B66C13/20
CPCB66C13/20B66C2700/035
Inventor 于跃孙凯刘永潘聚才
Owner CRRC QIQIHAR ROLLING CO LTD