CN201246428Y

CN201246428Y - Brake device

Info

Publication number: CN201246428Y
Application number: CNU2008200877988U
Authority: CN
Inventors: 曹科定
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-29
Filing date: 2008-05-29
Publication date: 2009-05-27
Anticipated expiration: 2018-05-29

Abstract

The utility model relates to the field of arresters (i.e. brakes), and provides a braking device designed for the technical problem of poor stability of the prior arrester. The utility model has the design points as follows: a brake disc and an inner round hole cam are connected into a whole, and a friction sheet is sleeved in the brake disc; an inner spline cam and a spline shaft are connected into a whole, and the inner spline cam is propped against the inner round hole cam; the inner spline cam is connected with a waved elastic gasket, and the waved elastic gasket is connected with a shaft used elastic retainer ring; a torsional spring is sleeved into the spline shaft, and two ends are respectively connected with the brake disc and the spline shaft; the cone-shaped brake disc or the friction sheet and a friction sleeve wear in; and a bearing is arranged in the friction sleeve. The utility model is characterized by automatic brake, safety and stability, stable friction coefficient, convenient replacement of quick-wear parts, low work temperature in braking, slow temperature rise, good abrasion resistance and the like, and is suitable for machinery required by like friction type arresters.

Description

Braking device

Technical field

The utility model relates to the break field, is commonly called as brake, is a kind of braking device.

Background technique

At present, the break on the market mainly is made up of brake bracket, brake component and Effector etc., is a kind of mechanical parts that the machinery movement parts stops or slowing down that are used for.Wherein, frictin braek is because the speed reducer that directly do not wear and tear is changed quick-wear part conveniently, and advantage of low manufacturing cost is widely used in the break field in the machineries such as metallurgy, building, chemical industry.Some adopt the frictin braek of bipyramid face brake block, its structure is comparatively complicated, because the friction area of bipyramid face is bigger, the rubbing surface of each conical surface brake block is subjected to the friction level difference in actual use, brake block stability reduces when causing machinery to use easily, and friction factor reduces.

Summary of the invention

For overcoming above-mentioned deficiency, purpose is to provide a kind of braking device simple in structure to related domain, makes it solve existing break stability and owes excellent technical problem.The purpose of this utility model is to adopt following technological scheme to realize.

A kind of braking device, this braking device comprise spline coupling, internal spline cam, interior circular hole cam, brake disc, torsion spring, friction sleeve, splined shaft; Wherein spline coupling connects motor output shaft, and an end of splined shaft is inserted in spline coupling; The other end is connected with the hexagonal transmission shaft.Its key points in design is that brake disc and interior circular hole cam are connected as a single entity, and brake disc is with friction plate; Internal spline cam and splined shaft are connected as a single entity, and internal spline cam and interior circular hole cam offset.Screw is fixed in the cylinder, and interior circular hole cam is done axial unidirectional movement; Rotate the internal spline cam by the hexagonal transmission shaft, internal spline cam and interior circular hole cam misplace, and the radial motion of splined shaft is obstructed, the internal spline cam interior circular hole cam of rushing to summit, the self energizing effort that the brake disc generation is axial; Axial brake disc or friction plate and friction sleeve produce the automatic axial expansion, and make reverse fricting movement, implement brake; In coupling drives when circular hole cam or the reversing motion of internal spline cam, internal spline cam and interior circular hole cam-engaged, brake is not promptly implemented in the frictional force release of axial expansion.

The internal spline cam is connected with wave spring washer, and wave spring washer is connected with circlip for shaft.When wave spring washer is the internal spline cam rotation, provide the cushion effect of circular hole cam in rushing to summit.Torsion spring is inserted in splined shaft, and the torsion spring two ends connect brake disc and splined shaft respectively.Internal spline cam and interior circular hole cam are formed whole assembly, and torsion spring provides reseting elasticity for brake disc, makes break-in automatically between brake disc and the friction sleeve.The conical surface break-in of the brake disc of taper or friction plate and friction sleeve is provided with bearing in the friction sleeve.Brake disc or friction plate and friction sleeve friction produce the frictional force that movement parts stops or slowing down.

Described splined shaft or brake disc directly are inserted in friction sleeve.The utility model is two kinds of design proposals (seeing Fig. 6,7) in addition, and according to identical principle, its structural design is more simple, reaches identical braking effect.

The utlity model has Braking mode, safety and stability, stable friction factor, quick-wear part is changed convenient, and the characteristics that operating temperature is low during braking, warming velocity is slow, wear resistance is good are applicable in the machinery of similar frictin braek demand.

Description of drawings

Fig. 1 is a part-structure sectional view of the present utility model.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the right elevation of Fig. 1.

Fig. 4 is A-A sectional view of Fig. 1.

Fig. 5 is B-B sectional view of Fig. 1.

Fig. 6 is the part-structure sectional view that Fig. 1 omits bearing.

Fig. 7 is the part-structure sectional view that Fig. 1 omits friction plate.

Fig. 8 is the assembling schematic representation of Fig. 1.

Above figure number and title: 1, spline coupling, 2, circlip for shaft, 3, wave spring washer, 4, internal spline cam, 5, interior circular hole cam, 6, brake disc, 7, friction plate, 8, torsion spring, 9, friction sleeve, 10, bearing, 11, splined shaft, 12, motor, 13, motor output shaft, 14, cylinder, 15, the hexagonal transmission shaft, 16, screw.

Embodiment

Mode of execution is with the utility model working principle and be operating as example.The utility model is inserted in the cylinder 14, and cylinder connects motor 12.Like this, an end of splined shaft 11 is connected with the hexagonal rotatingshaft, and the other end is connected with motor output shaft 13.Splined shaft is set with circlip for shaft 2, wave spring washer 3, brake disc 6, torsion spring 8, friction sleeve 9 from left to right; Brake disc is with friction plate 7, and friction sleeve is provided with bearing 10.Because brake disc and interior circular hole cam 5 are connected as a single entity, internal spline cam 4 is connected as a single entity with splined shaft, and the torsion spring two ends are individually fixed in brake disc and splined shaft; Be about to internal spline cam and interior circular hole cam and form whole assembly.Its working principle is: torsion spring, interior circular hole cam, internal spline cam are formed brake clutch, by the rotation of internal spline cam, and the elastic force of torsion spring, regulate the frictional force between the conical socket of the conical surface of brake disc or friction plate and friction sleeve automatically.Be that the utility model automatically acts on the output shaft of drive motor, when tension force motor output shaft stops operating by the hexagonal transmission shaft, automatically play braking action.

Rotate the internal spline cam during practical operation, the inclined-plane of the inclined-plane of internal spline cam and interior circular hole cam misplaces, the radial motion of splined shaft is obstructed, the internal spline cam interior circular hole cam of rushing to summit, brake disc or friction plate and friction sleeve are collided, and make reverse fricting movement, thus playing braking action, movement parts stops.In coupling drives when circular hole cam or the reversing motion of internal spline cam, the inclined-plane of internal spline cam contacts with the inclined-plane of interior circular hole cam, i.e. internal spline cam and interior circular hole cam-engaged, and brake disc or friction plate unclamp friction sleeve, thereby the release braking action, the releasing of brake device.

Be provided with bearing in the friction sleeve, make the splined shaft that overlaps the friction sleeve of packing into rotate more stable.When the wearing and tearing of friction plate or brake disc are excessive when needing to change, cylinder is taken out from motor, from cylinder, take out braking device, extract friction sleeve, change friction sleeve, friction plate or brake disc and get final product.The material of friction plate adopt friction factor high and stablize, material that wear resistance is good, temperature rise speed is slow, operating temperature and functional.

The utility model when running accurate positioning, noise are little, the heat that can guiding function produces, dissipation heat; Unidirectional movement that friction disk is axial and self energizing effort make stressed, the equilibrium that rubs of rubbing surface, have guaranteed the stability of break.

Claims

1, a kind of braking device, this braking device comprise spline coupling (1), internal spline cam (4), interior circular hole cam (5), brake disc (6), torsion spring (8), friction sleeve (9), splined shaft (11); Wherein spline coupling (1) connects motor output shaft (13), and an end of splined shaft (11) is inserted in spline coupling and motor output shaft, and the other end is connected with hexagonal transmission shaft (15); It is characterized in that brake disc (6) and interior circular hole cam (5) are connected as a single entity, brake disc is with friction plate (7); Internal spline cam (4) is connected as a single entity with splined shaft (11), and internal spline cam and interior circular hole cam offset; The internal spline cam is connected with wave spring washer (3), and wave spring washer is connected with circlip for shaft (2); Torsion spring (8) is inserted in splined shaft, and two ends connect brake disc and splined shaft respectively; The conical surface break-in of the brake disc of taper or friction plate and friction sleeve (9) is provided with bearing (10) in the friction sleeve.

2, braking device as claimed in claim 1 is characterized in that described splined shaft (11) or brake disc (6) directly are inserted in friction sleeve (9).