Light manually lifted mechanical hand-cranking transmission device
A transmission device and manipulator technology, applied in transportation and packaging, elevators in buildings, etc., can solve the problems of poor reliability and low safety, and achieve the effect of improving operation convenience and equipment safety.
Active Publication Date: 2017-02-15
SHANGHAI MARINE EQUIP RES INST
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Problems solved by technology
[0002] During the emergency manual operation of light special electromechanical equipment such as elevators and lifts due to accidents or failures, the electromagnetic brake device needs to be released manually, and the car or lifting platform is slowly lowered by its own weight, and can only run in one direction; very few can realize two-way manual operation The lifting equipment, pawls and other backstops used in the manual transmission need to be manually controlled separately, which has low safety and poor reliability.
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[0011] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0012] Such as figure 1 As shown, a light-duty manual lifting mechanical hand transmission device is mainly composed of a handle 1, a transmission shaft 2, a transmission sprocket 3, a pawl 4, two locking rings 5, a ratchet 6, a bushing 7, and two supports 8 , two rolling bearings 9, two glands 10, brake disc 11, two friction plates 12, spring 13, set screw 14, stop nut 15 and the like.
[0013] Transmission shaft 2 is installed in two supports 8 by rolling bearing 9, and brake disc 11, transmission sprocket 3, stop nut 15, handle 1 are successively housed on the transmission shaft 2 that stretches out support 8 from inside to outside. The brake disc 11 is installed with the ratchet 6 through the bushing 7, between one side of the ratchet 6 and the inner side of the brake disc 11, and between the other side of the ratchet 6 and the side of the drive sp...
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The invention relates to a light manually lifted mechanical hand-cranking transmission device. The light manually lifted mechanical hand-cranking transmission device comprises a handle, a transmission shaft, a transmission chain wheel, a pawl, locking rings, a ratchet wheel, a bushing, supports, a braking disc, friction plates and a block nut. The transmission shaft is mounted in the two supports through rolling bearings; the braking disc, the transmission chain wheel, the block nut and the handle are successively mounted from inside to outside on the transmission shaft extending out of the supports; the two locking rings and a spring are mounted at the rear end of the pawl; the braking disc is connected to the ratchet wheel through the bushing; the pawl is unidirectionally connected to the ratchet wheel in a locking manner; the friction plates are arranged on two side faces of the ratchet wheel located between the braking disc and the transmission chain wheel, respectively, for unidirectional frictional self-locking; the transmission shaft and the transmission chain wheel are in matched connection by adopting multi-head left hand or right hand trapezoidal threads, the braking disc is fixedly connected to the transmission shaft, and the block nut is fixedly connected to the transmission shaft to form an unidirectional frictional self-locked screw brake. The hand-cranking transmission device has a hand-cranking transmission function as well as an unidirectional frictional self-locking function at the same time.
Description
technical field [0001] The invention relates to a lifting and lowering equipment, in particular to a manual lifting mechanical hand transmission device for the lifting and lowering equipment. Background technique [0002] During the emergency manual operation of light special electromechanical equipment such as elevators and lifts due to accidents or failures, the electromagnetic brake device needs to be released manually, and the car or lifting platform is slowly lowered by its own weight, and can only run in one direction; very few can realize two-way manual operation The lifting equipment, pawl and other backstops used in the manual transmission need to be manually controlled separately, which has low safety and poor reliability. Contents of the invention [0003] The present invention is to provide a hand-operated transmission device of a light-duty manual lifting machine, which can be driven by hand in two directions, and can be self-locked by one-way friction at any ...
Claims
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IPC IPC(8): B66B11/04
CPCB66B11/0415
Inventor 陈子蕾奚昕徐江吕堂祺尹家俊
Owner SHANGHAI MARINE EQUIP RES INST