Torque-adjustable overload protection device
An overload protection and adjustable technology, which is applied in the direction of sliding couplings, mechanical equipment, couplings, etc., can solve problems such as inability to adjust on site, difficult maintenance, and changes in transmission torque, so as to achieve long service life and improve safety. and reliability effects
Active Publication Date: 2013-09-11
CHINA COAL ZHANGJIAKOU COAL MINING MACHINERY
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Problems solved by technology
[0003] The purpose of the present invention is to provide a torque-adjustable overload protection device to overcome the problems of poor reliability, difficult maintenance and inability to adjust on-site after the transmission torque changes in existing coal mine plows and conveyor overload protection devices.
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Embodiment 1
[0014] Such as Figure 1 ~ Figure 3 As shown, the present invention includes an overload protection mechanism. The overload protection mechanism is composed of a shaft sleeve 1, an inner ring gear 2, a friction plate group 9 and a base 12; the inner ring gear 2 is set on the shaft sleeve 1, and the friction plate group 9 is assembled on the shaft In the sealed cavity composed of sleeve 1, inner ring gear 2, annular cylinder 4 and base 12, in the friction plate group, the friction plate connected with the inner ring gear 2 through the spline and the friction plate connected with the shaft sleeve 1 through the spline interval setting;
[0015] The present invention also includes a hydraulic pressure device, which is composed of a one-way liquid injection joint 3, an annular cylinder body 4, an annular plunger 6, a disc spring 7, a pressure plate 8, and a pressure gauge 11; The annular cylinder 4 is fixed integrally with the inner ring gear 2 and the base 12 of the overload prot...
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The invention relates to an overload protection device for an underground coal mine planer and a conveyor, in particular to a torque-adjustable overload protection device for a driving system. The available overload protection device for the underground coal mine planer and the conveyor mainly utilizes a spring assembly to apply pressure on friction plates, and transfer torque cannot be adjusted after set. The overload protection device adopts the technical scheme that the overload protection device comprises an overload protection mechanism and a hydraulic pressure application device, wherein the overload protection mechanism comprises a shaft sleeve, an inner gear ring, friction plate groups and a base; an annular plunger and an annular cylinder body of the hydraulic pressure application device are matched to form a plunger cylinder structure; the friction plate groups are assembled in a cavity connected by the hydraulic pressure application device and the inner gear ring and the base of the overload protection mechanism; and the annular plunger pushes against the friction plate groups through dish springs and platens. Liquid injection pressure of the hydraulic pressure application device is adjusted, so that purposes of adjusting the pressure among the friction plates and rectifying the transfer torque are achieved, and the problems that the available equipment is difficult to maintain and the transfer torque cannot be adjusted are solved.
Description
technical field [0001] The invention relates to an overload protection device for coal plows and conveyors in coal mines, in particular to a torque-adjustable overload protection device for a drive system. Background technique [0002] The existing overload protection devices for plows and conveyors in coal mines mostly use spring components to apply rated pressure to the friction plates, and the transmission torque cannot be adjusted after setting, and the friction plates are worn due to slip protection, making the transmission torque decline. When the transmission torque decreases, the friction torque limiter needs to be disassembled and returned to the factory for recalibration. The plow chain driving system of the coal plow is frequently switched and started, and the impact load is large, resulting in faster wear of the friction plate. In order to improve the safety and reliability of the equipment, and improve the production efficiency of thin coal seam mining, the abo...
Claims
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IPC IPC(8): F16D7/02
Inventor 张建军李玉春聂文科吴昊黄政委党亚歌王彪
Owner CHINA COAL ZHANGJIAKOU COAL MINING MACHINERY