CN204164219U

CN204164219U - A kind of step-by-step movement reseting torque limiter

Info

Publication number: CN204164219U
Application number: CN201420492098.2U
Authority: CN
Inventors: 黄志辉; 冯金亮; 樊振海; 蔡珩; 黄博
Original assignee: Southwest Jiaotong University
Current assignee: Southwest Jiaotong University
Priority date: 2014-08-29
Filing date: 2014-08-29
Publication date: 2015-02-18
Anticipated expiration: 2024-08-29

Abstract

A kind of step-by-step movement reseting torque limiter: conventional friction limiter of moment under outage state, will reset moment limit value, normally can use again, therefore, use inconvenience after eliminating overload; Step-by-step movement reseting torque limiter adds auto-reset function on the basis of conventional friction formula limiter of moment, it splines at sleeve lining, at keyway, place establishes positioning screw hole, belleville spring acts directly on the interior edge face of shift(ing) ring, and complete in shift(ing) ring, but there is certain gap with shift(ing) ring inwall; Adjustment end tools for bolts ' pretension moment size can control transmitted torque setting value, some balls are being circumferentially on average embedded in groove with 60 ° of intervals, therefore, it possesses the advantage of all conventional friction formula limiters of moment, meanwhile, again there is auto-reset function, and only need low cruise when resetting, without the need to regulating, clockwise and anticlockwise; Transmitted torque setting value can be controlled by adjustment end tools for bolts ' pretension moment size.

Description

A kind of step-by-step movement reseting torque limiter

Art

The utility model patent relates to a kind of step-by-step movement reseting torque limiter.

Background technique

Limiter of moment is a kind of mechanical overload protection device; often be arranged between powerdriven driving side and load side; once transship; carry-over moment exceedes setting value; just can throw off or skid, thus powerdriven active and passive side is separated, exempt from machinery is transshipped and the damage that causes; be particularly useful for discontinuity, impact overload protection, or the occasion of debugging, testing.After tradition limiter of moment eliminates overload, under outage state, moment limit value to be reset, normally can use again, therefore, use inconvenience.Step-by-step movement reseting torque limiter adds auto-reset function on the basis of conventional friction formula limiter of moment, and therefore, it possesses the advantage of all conventional friction formula limiters of moment, meanwhile, has auto-reset function again; And only need low cruise when resetting, and without the need to regulating, clockwise and anticlockwise.

Summary of the invention

In order to play conventional friction formula limiter of moment, have auto-reset function again, the utility model patent provides a kind of features simple structure, assembling and application safety, reliably new structure, is referred to as step-by-step movement reseting torque limiter.Its working principle is: after eliminating overload, the next one 60 ° of contact pointss at circumference engage with groove by ball again automatically, limiter of moment is automatically reset, thus can carry out normal power transmission.

The utility model patent solves the technological scheme that its technical problem adopts: 1. sleeve lining splines, and carrys out carry-over moment by key; 2. on axle sleeve, keyway place establishes positioning screw hole, the axial float of limit key; 3. belleville spring acts directly on the interior edge face of shift(ing) ring, and belleville spring entirely in shift(ing) ring, but has certain gap with shift(ing) ring inwall; 4. can control transmitted torque setting value by adjustment end tools for bolts ' pretension moment size; 5. some balls are being circumferentially on average embedded in groove with 60 ° of intervals, eliminate after transshipping, and ball will engage with groove again automatically in next 60 ° of contact pointss, limiter of moment be automatically reset, thus can carry out normal power transmission.

The beneficial effect of the utility model patent is: 1, reduce limiter of moment construction cost and life-cycle maintenance period cost, can repeatedly use; 2, easy to use, only need low cruise when resetting after eliminating overload, without the need to regulating, clockwise and anticlockwise all can automatically reset and carry-over moment: 3, moment is easily adjusted, and only need adjust end bolt pre-fastening moment size can control transmitted torque setting value; 4, by flange ring output torque; 5, Torque Control precision is high: belleville spring, all in shift(ing) ring, by the pollution of oil, dust, also can not can not be subject to extraneous damaging.

The effect of conventional friction formula limiter of moment should be realized, again there is auto-reset function, adopt the utility model patent can meet these requirements well, effectively can also overcome the shortcoming of conventional construction.

Accompanying drawing explanation

Accompanying drawing is 1/4th cut-away views of the utility model patent.

In accompanying drawing: 1. flange ring, 2. axle sleeve, 3. bearing (ball) cover, 4. axial needle bearing, 5. guard ring, 6. flip sleeve, 7. ball, 8. shift(ing) ring, 9. belleville spring, 10. compression plate, 11. locking plates.

Embodiment

As shown in drawings, structure has simply, processes and easy to assembly, service-strong feature.

Embodiment is: there is the positioning screw hole of key the one end of the axle sleeve 2 that inwall splines, the other end outer surface establishes segmented spline, first bearing (ball) cover 3 is contained on axle sleeve, then respectively axial needle bearing 4, guard ring 5 and flip sleeve 6 are contained on axle sleeve, being contained in outside flip sleeve by the flange ring 1 of band screw hole again, is all Spielpassung between flip sleeve and the axle sleeve in it and its outer flange ring; Then by ball 7 being circumferentially on average embedded in the groove of flange ring side with 60 ° of intervals, then shift(ing) ring 8 is installed, shift(ing) ring side also have corresponding groove so that and ball engagement; Then respectively belleville spring 9 and compression plate 10 are contained on the correct position of axle sleeve, between belleville spring and the axle sleeve in it and its outer shift(ing) ring, are Spielpassung; Meanwhile, the internal surface of shift(ing) ring and compression plate all offers spline, to coordinate carry-over moment with the axle sleeve with spline in it; Finally be contained on axle sleeve by locking plate 11, locking plate is provided with bolt hole and set screw hole, is respectively used to install the bolt of Torque-adjusting setting value size and play the screw of tightening effect; The pre-fastening moment size of adjusting bolt gets final product the setting value of accurate control moment limiter.

Claims

1. a step-by-step movement reseting torque limiter, is characterized in that: sleeve lining splines, carrys out carry-over moment by key, on axle sleeve, keyway place establishes positioning screw hole, the axial float of limit key; Belleville spring acts directly on the interior edge face of shift(ing) ring, and belleville spring entirely in shift(ing) ring, but has certain gap with shift(ing) ring inwall; Transmitted torque setting value can be controlled by adjustment end tools for bolts ' pretension moment size; Some balls, being circumferentially on average embedded in groove with 60 ° of intervals, are eliminated after transshipping, and ball will engage with groove again automatically in next 60 ° of contact pointss, limiter of moment be automatically reset, thus can carry out normal power transmission.

2. step-by-step movement reseting torque limiter according to claim 1, it is characterized in that ball groove circumferentially by 30 °, 45 °, 90 ° or 120 ° replace 60 ° uniform.