Anti-blocking gearbox

A kind of gear box, anti-locking technology, applied in the direction of hoisting device, etc., can solve the problems of motor, screw pair transmission parts damage, reducing the service life of ordinary gearboxes, screw locking and other problems, to eliminate the screw locking, The effect of eliminating impact and protecting the screw

Active Publication Date: 2016-04-27
HANGZHOU HENGHONG MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For ordinary gearboxes used in screw jacks, when the screw and screw nut reach two extreme positions during load-bearing operation, the screw pair is prone to jamming, resulting in a stalled situation
Once the gearbox is stuck or blocked, it will cause great damage to the motor, screw pair or other transmission components, thus greatly reducing the service life of ordinary gearboxes

Method used

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  • Anti-blocking gearbox

Examples

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Embodiment 1

[0017] The anti-stall gearbox includes a box body 1, and the box body 1 is equipped with a driving gear 2, an execution gear 3 and a micro switch 4. The driving gear 2 meshes with the execution gear 3 through the reduction gear 5, and the execution gear 3 drives the micro switch 4 actions.

[0018] The outer edge of the driving gear 2 is provided with teeth, and the central position of the driving gear 2 is provided with a shaft hole. The screw mandrel outside the casing is inserted in the shaft hole, and when the outer screw mandrel rotates, it will drive the driving gear 2 to rotate. The driving gear 2 drives the reduction gear 5 to rotate through the teeth.

[0019] Reduction gear 5 is a duplex gear. Double gears are coaxially combined by two gears, and they rotate or stop synchronously.

[0020] The number of reduction gears 5 is A, and A≥1.

[0021] The execution gear 3 is an internal ring gear, and the outer edge of the execution gear 3 is provided with grooves 6 , a...

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PUM

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Abstract

The invention relates to a rotation-clogging preventing gear box. The rotation-clogging preventing gear box comprises a box body (1), a driving gear (2), an executing gear (3) and micro switches (4) are arranged inside the box body (1), the driving gear (2) is meshed with the executing gear (3) via a reduction gear (5), and the executing gear (3) drives the micro switches (4) to act. By the aid of the rotation-clogging preventing gear box, when a lead screw nut runs to two end positions of a lead screw and is close to rotation clogging, the purpose of cutting off a motor power supply so as to stop running of a motor is achieved via the combination of multi-stage gears and matching of the micro switches, and thereby rotation clogging is prevented. Therefore, the rotation-clogging preventing gear box eliminates the rotation clogging problem at the two end positions of the lead screw via reasonable matching of a gear mechanism, the mechanism is enabled to be stably stopped when running to the two end positions, impact to the lead screw and a host machine from rotation clogging is eliminated, the motor and the lead screw are protected, the service life of the host machine is prolonged greatly, and reliability of the mechanism is improved.

Description

technical field [0001] The invention relates to a gear box, in particular to an anti-blocking gear box for a screw jack. Background technique [0002] In the ordinary gearbox used for screw jacks, when the screw and the screw nut reach two extreme positions during the load-bearing operation, the screw pair is prone to jamming, resulting in a stalled situation. Once the gearbox is stuck or blocked, it will cause great damage to the motor, screw pair or other transmission components, thus greatly reducing the service life of ordinary gearboxes. Contents of the invention [0003] The present invention aims to provide an anti-stall gear box with a protection mechanism that can prevent jamming and stalling of existing gearboxes. [0004] In order to solve the above technical problems, the present invention is solved through the following technical solutions: [0005] The anti-stall gear box includes a box body. The box body is provided with a driving gear, an execution gear a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66F3/20
Inventor 张继刚陆江强王国忠
Owner HANGZHOU HENGHONG MASCH CO LTD
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