Hydraulic brake and emergency release control system
An emergency release and control system technology, applied to fluid pressure actuators, load suspension components, cranes, etc., can solve the problems of inaccurate control, hydraulic impact and large brake devices, etc., to eliminate the shaking phenomenon and reduce the size of the boom The effect of the jitter phenomenon
Inactive Publication Date: 2019-03-01
合肥倍豪海洋装备技术有限公司
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Problems solved by technology
[0008] In order to solve the problems of large hydraulic shock during the braking process of the luffing mechanism, the braking device cannot be accurately controlled, and avoid the hydraulic motor speeding accident during the emergency release process, the present invention provides a hydraulic brake and emergency release control system. It can effectively solve the problems of large hydraulic shock and inaccurate control of the brake device during the braking process of the luffing mechanism, and at the same time avoid the occurrence of hydraulic motor overrun accidents during the emergency release process
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[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0041] see figure 1 As shown, this embodiment provides a hydraulic brake and emergency release control system, including: luffing main control valve 1, brake control valve group 2, balance valve 3, overflow valve 4, first normally closed stop valve 5, Hydraulic motor 6, brake hydraulic cylinder 7, fixed orifice 8, first normally open shut-off valve 9, second normally closed shut-off valve 10, second normally open shut-off valve 11, manual pump assembly 12.
[0042] Among them, t...
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The invention discloses a hydraulic brake and emergency release control system. The system comprises a variable amplitude master control valve, a brake control valve set, a balance valve, an overflowvalve, a first normally-closed stop valve, a hydraulic motor, a brake hydraulic cylinder, a fixing throttling hole, a first normally-open stop valve, a second normally-closed stop valve, a second normally-open stop valve and a manual pump assembly. The brake control valve set comprises a throttling valve, a third normally-open stop valve, a pilot-operated directional control valve, a pressure reduction valve, a shuttle valve, a one-way valve and a pressure compensator. An oil suction port of the manual pump assembly communicates with an oil tank of a hydraulic control system. The manual pump assembly is composed of a pump port one-way valve, an overflow valve and a manual pump. Through the hydraulic brake and emergency release control system, the problems that hydraulic impact is large anda brake device cannot be controlled accurately in the braking process of a variable amplitude mechanism can be effectively solved, and meanwhile, the accident of galloping of the hydraulic motor during the emergency release process can be avoided.
Description
technical field [0001] The invention relates to the field of marine cranes, in particular to a hydraulic brake and emergency release control system. Background technique [0002] The jib of a large offshore crane generally changes its pitch angle by retracting and unwinding the cable of the luffing winch to complete the lifting or lowering of the jib during the work process. The luffing winch is generally driven by hydraulic pressure, that is, the hydraulic motor is used to drive the luffing winch to retract and release the cable to realize the luffing action of the boom. [0003] For the hydraulic luffing mechanism, in addition to the luffing control system, there should also be a hydraulic brake control system and an emergency release control system. The hydraulic brake control system of the luffing mechanism is used to control the hydraulic brake device of the luffing winch to always be in the open state during the boom luffing movement, and to ensure that the hydraulic ...
Claims
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IPC IPC(8): B66D5/28B66C13/20B66C23/82F15B13/02
CPCB66C13/20B66C23/82B66D5/28F15B13/02F15B13/024F15B13/027F15B13/028F15B2211/865F15B2211/8752F15B2211/895
Inventor 程源张燕
Owner 合肥倍豪海洋装备技术有限公司