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Delay starting torque-limiting hydraulic coupler

A technology of hydraulic coupling and delay start, which is applied in transmission devices, fluid transmission devices, belts/chains/gears, etc., and can solve the problem of not being able to fully exert the functions of shunting and delaying the auxiliary cavity, and not being able to better control the work cavity and auxiliary cavity to delay the filling speed, etc., to improve the start-up performance and overload protection performance, soft and slow start-up, and prolong the start-up time

Pending Publication Date: 2019-11-01
CHINA COAL ZHANGJIAKOU COAL MINING MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moment-limiting hydraulic couplings often improve their torque-limiting characteristics by setting front auxiliary chambers and rear auxiliary chambers. An overflow hole is set between the auxiliary chamber and the working chamber to adjust the liquid filling volume in the working chamber and the auxiliary chamber. However, this method cannot better control the extension speed between the working chamber and the auxiliary chamber, and cannot fully exert the shunt and extension functions of the auxiliary chamber.

Method used

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  • Delay starting torque-limiting hydraulic coupler
  • Delay starting torque-limiting hydraulic coupler
  • Delay starting torque-limiting hydraulic coupler

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0015] A delay-start torque-limiting hydraulic coupling according to the present invention: the connecting sleeve 1 and the connecting disc 3 are connected through the elastic block 2, and the connecting disc 3 is connected with the auxiliary chamber casing I4, the pump wheel 10, the casing 6, and the auxiliary chamber casing II8 is connected by bolts in turn, the turbine 9 is fixed on the transmission shaft by bolts, the flow hole a is set on the pump wheel 10, the centrifugal valve 13 is fixed on the valve plate 11 by screws, and the valve plate 11 is installed on the pump wheel 10 by screws, The through hole h of the centrifugal valve is aligned with the flow hole a, and the throttling control valve 14 is respectively set on the auxiliary chamber shell I4 and shell 6. The throttle control valve 14 has a simple structure, and holes are drilled on the auxiliary chambe...

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Abstract

The invention relates to a delay starting device, belongs to the field of coal mine machinery, and particularly relates to a delay starting torque-limiting hydraulic coupler. A pump wheel of the torque-limiting hydraulic coupler adopts an inner edge chamfering angle or an interval chamfering angle; turbine blades are arranged at intervals up and down; a front auxiliary cavity, a rear auxiliary cavity and a side auxiliary cavity are arranged; the torque-limiting characteristic of the coupler is improved; when a working machine is started or overloaded, dynamic pressure and static pressure are utilized to enable working liquid to drain and shunt to the auxiliary cavities, so that the liquid filling amount in a working cavity is reduced, and the transmission torque and the overload coefficient are reduced; and meanwhile, a throttling control valve is arranged to enable liquid in the auxiliary cavities to slowly enter the working cavity, so that the starting time is prolonged, the soft starting performance and the overload protection performance of the device are effectively improved, and stable operation of equipment is guaranteed reliably.

Description

technical field [0001] The invention relates to a soft start device, which belongs to the field of coal mine machinery, in particular to a time-delay start torque-limiting hydraulic coupler. Background technique [0002] In the harsh working environment underground, the coal mining volume is large, the start-up is frequent and mostly on-load, which has a large impact on the scraper chain, and the load is unstable. overload. In order to solve the problems of frequent starting and overload starting damage to equipment, a safe and reliable soft starting device can effectively improve the transmission quality and provide effective mechanical protection for the coal mine mechanical transmission system. [0003] At present, torque-limiting hydraulic couplings are widely used as soft start devices for scraper conveyors, reloaders, and crushers in coal mines. Moment-limiting hydraulic couplings often improve their torque-limiting characteristics by setting front auxiliary chambers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H41/04F16H41/24F16H41/26
CPCF16H41/04F16H41/24F16H41/26
Inventor 李帅聂文科王彪尤晓明
Owner CHINA COAL ZHANGJIAKOU COAL MINING MACHINERY
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