A device and method for prohibiting combined operation of a crane
A composite operation and crane technology, applied in the directions of safety devices, transportation and packaging, load hanging components, etc., can solve the problems of complex environment and insufficient concentration of drivers, and achieve the effect of inhibiting composite operations and ensuring operational safety.
Active Publication Date: 2017-07-21
CHINA FIRST METALLURGICAL GROUP
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Problems solved by technology
In the construction site, the crane driver also likes to use compound operations in many cases, such as turning while walking, lifting the hook while luffing, or linkage of large and small hooks together, and what is even more linked with hands and feet. However, due to the on-site The environment is complex, or the driver's attention is not concentrated enough, compound operations often cause various accidents
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Embodiment Construction
[0019] The present invention will be described in further detail below based on specific embodiments and in conjunction with the accompanying drawings.
[0020] refer to figure 1 As shown, the device for prohibiting compound operation of a crane according to the present invention at least includes a pressure oil supply oil circuit P, an oil return line T, a first hydraulic control valve YK1, a second hydraulic control valve YK2, a third hydraulic control valve YK3, The first operating valve 1, the second operating valve 2, the third operating valve 3, and the pressure oil supply circuit P pass through the first hydraulic control valve YK1, the second hydraulic control valve YK2, the third hydraulic control valve YK3 and the first operating valve respectively. The input pressure oil lines of valve 1, second operating valve 2, and third operating valve 3 are connected, and the oil return line T is respectively connected with the first operating valve 1, second operating valve 2,...
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The invention provides a device and method for prohibiting a compound operation of a crane. The device at least comprises a pressure oil supply way, an oil return pipeline, a first hydraulic control valve, a second hydraulic control valve, a third hydraulic control valve, a first operation valve, a second operation valve and a third operation valve; two output pressure oil ways of the first operation valve are communicated to the second and third hydraulic control valves through shuttle valves via first pressure oil pipelines; two output pressure oil ways of the second operation valve are communicated to the first and third hydraulic control valves through shuttle valves via second pressure oil pipelines; two output pressure oil ways of the third operation valve are communicated to the first and second hydraulic control valves through shuttles valves via third pressure oil pipelines; and all the output pressure oil ways are synchronously connected to a main hydraulic reversing valve. When the method adopts a hydraulic control scheme to realize one operation loop action by using interlocking of hydraulic loops, other loops lose pressure to achieve the purpose of only performing one operation each time. The device and the method effectively prohibit the compound operation, and preferably guarantee the operation safety of the crane.
Description
technical field [0001] The invention relates to the technical field of crane operation, in particular to a device and method for prohibiting compound operations of a crane. Background technique [0002] As a crane manufacturer, it often pursues advanced performance, and the designed machine has the function of compound operation. In the construction site, the crane driver also likes to use compound operations in many cases, such as turning while walking, lifting the hook while luffing, or linkage of large and small hooks together, and what is even more linked with hands and feet. However, due to the on-site The environment is complex, or the driver's attention is not concentrated enough, compound operations often cause various accidents. At present, in addition to using operating procedures and other systems to constrain the driver to perform compound operations, it is best to set it on the hardware to make it impossible for the operator to perform compound operations. Co...
Claims
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IPC IPC(8): B66C15/00B66C13/20
CPCB66C13/20B66C15/00
Inventor 董武
Owner CHINA FIRST METALLURGICAL GROUP