Hydraulic control system and crane
A hydraulic control system and control system technology, applied in the field of hydraulic control systems and cranes, can solve problems such as complex connection of feedback oil circuit and slow feedback speed
Active Publication Date: 2020-01-07
SANY AUTOMOBILE HOISTING MACHINERY
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Problems solved by technology
[0004] The purpose of the present invention is to provide a hydraulic control system and a crane to solve the problems of slow feedback speed of the existing feedback network and complex connection of the feedback oil circuit in view of the above-mentioned deficiencies in the prior art
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[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
[0027] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. It should be noted that, in the case of no conflict, various features in the embodiments of the present invention can be com...
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The invention provides a hydraulic control system and a crane, and relates to the technical field of engineering machinery. The hydraulic control system comprises a first control system; and the firstcontrol system comprises a driving system and a feedback system. The driving system comprises a main oil way, an oil return way, and multiple working oil ways connected in parallel; the main oil wayis used for communicating with a first oil pump, and communicates with the multiple working oil ways; and the multiple working oil ways are used for communicating with multiple execution elements, andcommunicate with the oil return way through the execution elements. The feedback system comprises multiple branch feedback oil ways correspondingly communicating with the multiple working oil ways one to one; and each branch feedback oil way communicates with a first one-way valve. After the oil pressure in the working oil ways enters the branch feedback oil ways through the first one-way valves,the oil pressure magnitudes of the multiple working oil ways arranged in parallel can be synchronously compared, so that the comparison speed can be accelerated, the feedback adjusting efficiency isimproved, and the performance of the hydraulic control system is totally improved.
Description
technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a hydraulic control system and a crane. Background technique [0002] With the rapid development of the economy, people's living standards have been greatly improved, and there is a higher demand for the completeness of infrastructure construction. Therefore, how to further improve the performance of traditional construction machinery has become a concern in the industry. hot spot. The hydraulic system is an important control system in construction machinery. It is mainly used to control the actuators through hydraulic means under the action of the operating end, so that it can control the construction machinery to complete various single or compound actions. [0003] In the existing multi-channel hydraulic control system, there is mostly a pressure feedback system, and it mostly uses a shuttle valve to compare the pressure of each oil circuit, and finally feedback...
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IPC IPC(8): B66C13/20
CPCB66C13/20
Inventor 王涛赵敏廖小宁梁凯
Owner SANY AUTOMOBILE HOISTING MACHINERY