CN2765000Y

CN2765000Y - Electromagnetic electricity-losing brake with high pulling torque

Info

Publication number: CN2765000Y
Application number: CN 200520025256
Authority: CN
Inventors: 李雅民; 王�琦; 李靖; 张国海; 孙洪杰
Original assignee: TIANJIN TIANTAI CLUTCH TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: TIANJIN TIANTAI CLUTCH TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2005-02-04
Filing date: 2005-02-04
Publication date: 2006-03-15
Anticipated expiration: 2015-02-04

Abstract

The utility model relates to an electromagnetic electricity-losing brake with a high torque, which comprises a coil and a spring which are installed on a magnetic yoke assembly and are fixedly installed on a connecting plate via screw bolts and a guide sleeve. A friction assembly is in sliding connection with a geared sleeve provided with an external spline, the outer circle of an armature is processed with an external spline, and via the external spline, the armature is in sliding connection with the guide sleeve provided with an internal spline. A microswitch is fixedly installed on the outer circle of the magnetic yoke assembly, one screw bolt corresponding to one side of the microswitch penetrates a through hole of the magnetic yoke assembly and is fixed with screw threads of the armature, and one end surface of the magnetic yoke assembly is fixedly provided with an anti-dust seal device. The utility model has the advantages of high brake torque, high intensity of the brake guide sleeve, high safety, long service life and flexible action.

Description

High pulling torque electromagnetism power-off brake

Technical field

The utility model belongs to the braking equipment in the machine driven system, particularly relates to a kind ofly being used for high pulling torque transmission system braking and safety reliability is good, the high pulling torque electromagnetism power-off brake that is active in one's movements.

Background technique

In the present known electromagnetism power-off brake that is used for machine driven system, guide pin bushing by the through hole on the armature and yoke to be threaded, armature can move back and forth on guide pin bushing, because the guide pin bushing cylindrical is processed with screw thread, and it is too thick that jacket wall is subjected to that the restriction in its space can not make, so bring difficulty to processing, break is to pass through bolt at work, guide pin bushing and armature come transmitting torque, when break is used in transmitting large torque, be easy to generate distortion after guide pin bushing is stressed, go wrong and cause armature to move vertically, cause break to break down, operator can't in time obtain break and be in clutch or braking state, continue operation again this moment and can damage machine, even security incident takes place.

Summary of the invention

The utility model provides a kind of and indicates the armature present position for solving the technical problem that exists in the known technology, and can improve the high pulling torque electromagnetism power-off brake of the safety reliability of break self and whole system.

The technological scheme that the utility model is taked for the technical problem that exists in the solution known technology is:

High pulling torque electromagnetism power-off brake, be included in the yoke assembling coil and spring are installed, the assembling of this yoke installs by bolt and guide pin bushing and connecting plate, between yoke assembling and connecting plate, armature and friction component are housed, armature and connecting plate are by spring clip friction-tight assembly, described friction component is to be made of friction plate and rotor, the friction component that has internal spline is slidingly connected with the geared sleeve that has external splines, in the yoke assembling, also be provided with through hole, bolt is threaded with armature by this through hole, it is characterized in that: on the cylindrical of armature, be provided with external splines, and be with the guide pin bushing that has an internal spline by external splines and be slidingly connected, also be fixed with sensitive switch on the cylindrical of yoke assembling, pass the through hole and the armature screw thread of yoke assembling corresponding to sensitive switch one side bolt and fix, an end face of assembling in yoke is fixed with the dust sealing device.

Advantage and the good effect that the utlity model has are: one, since guide pin bushing of the present utility model with adopt inside and outside spline to be slidingly matched being connected of armature to have substituted being threaded of guide pin bushing, not only can improve the intensity of guide pin bushing, and can be used in and transmit more high pulling torque, be that armature moves raising precision guiding vertically simultaneously, but also can make the action of armature sensitive more, shortened the response time of break; They are two years old, on the cylindrical of yoke assembling, the sensitive switch that can judge armature position is installed, that is reflect after giving break switching voltage, whether break makes correct response, so that the operation of transmission system decision back, can improve the reliability of break self and whole system so greatly, guarantee the normal operation of machine, and prolong the working life of break.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the right elevation of Fig. 1;

Fig. 3 is that the K of Fig. 2 is to the rotary expansion schematic representation;

Fig. 4 is the schematic representation that the utility model seal arrangement adopts the cover plate for sealing structure.

Among the figure: 1 bolt, 2 packing rings, 3 springs, 4 dust sealing devices, 5 geared sleeves, 6 spring sheets, 7 friction components, 7-1 friction plate, 7-2 rotor, 8 bolts, the assembling of 9 yokes, 10 bolts, 11 armature, 12 guide pin bushings, 13 connecting plates, 14 bolts, 15 sensitive switches, 16 screws, 17 coils.

Embodiment

For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

See also Fig. 1-Fig. 3, high pulling torque electromagnetism power-off brake, be included in the yoke assembling 9 coil 17 and spring 3 are installed, described yoke assembling 9 is by bolt 1, packing ring 2 installs with guide pin bushing 12 and connecting plate 13, armature 11 and the friction component 7 that has internal spline are housed between yoke assembling and connecting plate 13, armature and connecting plate clamp friction member by spring 3, described friction component 7 is to be made of friction plate 7-1 and rotor 7-2, the friction component 7 that has internal spline is slidingly connected with the geared sleeve 5 that has external splines, spring sheet 6 is inlaid on the outer teeth groove of geared sleeve 5, the yoke assembling is passed this through hole by the through hole on it by bolt 8 and is threaded with armature, the effect of this bolt 8 is that operator pass through manual swivel bolt 8 so that break is discharged when the yoke assembling is broken down.On the cylindrical of armature 11, be processed with external splines, and be with the guide pin bushing 12 that has an internal spline by external splines and be slidingly connected, fix a sensitive switch 15 by screw 16 on the cylindrical of yoke assembling, pass the through hole and the armature screw thread of yoke assembling fixes corresponding to sensitive switch one side bolt 14, end face in the yoke assembling is fixed with dust sealing device 4, this dust sealing device 4 can adopt ring structure (as shown in Figure 1), also can adopt cover plate for sealing structure (as shown in Figure 4).

Working principle of the present utility model: at first whole break is installed in pedestal by bolt 10, and guarantee that air gap delta has an initial value, at break not under the "on" position, spring 3 roof pressure armature 11, friction component 7 is clamped by armature and connecting plate 13, rely on the friction torque that produces on the friction component with friction component, geared sleeve 5 together with the braking that is locked of axle and the relative pedestal of load thereof; When axle and load thereof need be released, pass to voltage rating for brake coil 17, the pressure that overcomes spring 3 at the effect lower armature 11 of electromagnetic attraction is attracted to yoke assembling 9, this moment air gap delta=0, opened friction component simultaneously, i.e. axle and load is released, and is in free state.

Sensitive switch is judged and the indication armature position:

When break cuts off the power supply: have gap delta (δ＞0) between armature and the yoke assembling 9, the screw head that is fixed on the screw 14 on the armature 11 does not contact with sensitive switch, this moment, sensitive switch was not touched by pressure, expression armature is not attracted to come by yoke assembling 9, be that rotor, axle and load thereof are in not releasing state, break is in braking state.

When break is switched on: the electromagnetic attraction that armature 11 is produced by the yoke assembling attracts to come, armature and yoke assembling are adjacent to (δ=0), being fixed on screw 14 on the armature simultaneously follows armature and moves, screw head presses sensitive switch, expression armature has moved to yoke assembling side, be that rotor, axle and load thereof are released, break is in releasing state.

Claims

1. high pulling torque electromagnetism power-off brake, be included in the yoke assembling coil and spring are installed, the assembling of this yoke installs by bolt and guide pin bushing and connecting plate, between yoke assembling and connecting plate, armature and friction component are housed, armature and connecting plate are by spring clip friction-tight assembly, described friction component is to be made of friction plate and rotor, the friction component that has internal spline is slidingly connected with the geared sleeve that has external splines, the yoke assembling is passed this through hole by the through hole on seven by bolt and is threaded with armature, it is characterized in that: on the cylindrical of armature, be provided with external splines, and be with the guide pin bushing that has an internal spline by external splines and be slidingly connected, also be fixed with sensitive switch on the cylindrical of yoke assembling, pass the through hole and the armature screw thread of yoke assembling corresponding to sensitive switch one side bolt and fix, an end face of assembling in yoke is fixed with the dust sealing device.