Safe locking device suitable for hydraulic oil cylinder
A technology of locking device and hydraulic cylinder, applied in the direction of fluid pressure actuating device, etc., can solve the problems of loss of locking function, potential safety hazard, unstable performance, etc., achieve stable and reliable work, meet the requirements of use, and easy operation
Active Publication Date: 2013-10-23
云南兴长江实业有限公司
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Problems solved by technology
In the actual application of hydraulic cylinders, in some special use cases or mechanisms, after the piston rod of the hydraulic cylinder reaches a certain position, it is absolutely not allowed to move. If it moves, the mechanism will not work normally, and even cause a safety accident.
For example, the oil cylinder of the luffing mechanism of a truck crane often has to stay at a certain height for a period of time during the installation of the lifting equipment in order to adjust the equipment. If the position cannot be locked at this time, it is very dangerous
The locking of the output position of the hydraulic cylinder in the prior art is to use a hydraulic lock. The defect of this method is that the performance is unstable, and sometimes the electricity will fail, or the leakage of the pipeline will cause the system pressure to drop. In this case, the hydraulic lock will If the locking function is lost, the output position of the piston rod cannot be guaranteed, which brings safety hazards to production
Method used
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[0009] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited in any way, and any transformation made based on the teaching of the present invention falls within the protection scope of the present invention.
[0010] like figure 1 As shown, the present invention includes a brake lock cylinder 1, a lock sleeve 2, a compression piston 3, a spring set 4 and an unlocking oil circuit 5, and the two ends of the cylinder 1 are respectively provided with an unlocking end cover 6 and a brake lock. The end cover 7, the central hole of the two is in dynamic sealing cooperation with the piston rod; the brake spring 4 is arranged between the brake end cover 7 and the locking cylinder 1; the unlocking oil circuit 5 is arranged on the unlocking end cover 6 , The locking piston 3 is set between the brake spring 4 and the unlocking oil circuit 5, and the locking sleeve 2 is set in motion between the locking...
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The invention discloses a safe locking device suitable for a hydraulic oil cylinder. The safe locking device comprises a braking locking cylinder body, a lock sleeve, a compression piston, a spring set and an unlocking oil way, wherein both ends of the cylinder body are respectively provided with an unlocking end cover and a braking end cover; central holes in the unlocking end cover and the braking end cover are matched with a piston rod through motive seal ; a brake spring is arranged between the braking end cover and the locking cylinder body; the unlocking end cover is provided with the unlocking oil way; a locking piston is arranged between the brake spring and the unlocking oil way; and the lock sleeve is arranged between the locking piston and the piston rod through clearance fit. The safe locking device adopts a mechanical-hydraulic linkage structure, namely mechanical force is utilized during locking, and hydraulic force is utilized during unlocking, so that locking and unlocking can be switched in real time. The safe locking device is compact in structure, simple and convenient to operate, stable and reliable to work, can effectively lock the working position of the hydraulic oil cylinder in real time, and meets the operating requirements of oil cylinder output position in special workplaces.
Description
technical field [0001] The invention belongs to the technical field of power transmission devices, and further belongs to the technical field of hydraulic transmission appliances, and in particular relates to a safety locking device suitable for hydraulic oil cylinders with a compact structure and easy operation. Background technique [0002] The hydraulic cylinder is the most important actuator in the hydraulic system. It converts hydraulic energy into mechanical energy, and cooperates with various transmission mechanisms to complete various mechanical movements. The hydraulic cylinder has the characteristics of simple structure, large output force, stable and reliable performance, convenient use and maintenance, etc., and is widely used in various machinery. In the actual application of hydraulic cylinders, in some special use cases or mechanisms, after the piston rod of the hydraulic cylinder reaches a certain position, it is absolutely not allowed to move. If it moves, t...
Claims
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Inventor 叶艺明张鸿平覃罗媛何成玉
Owner 云南兴长江实业有限公司