CN2822011Y

CN2822011Y - Breaker of tubular motor

Info

Publication number: CN2822011Y
Application number: CN 200520014254
Authority: CN
Inventors: 姚培德
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-08-19
Filing date: 2005-08-19
Publication date: 2006-09-27
Anticipated expiration: 2015-08-19

Abstract

The utility model relates to a brake of a tubular motor, which is composed of a brake coil holder, a friction sheet and a brake seat assembly, wherein the brake coil holder is provided with a spring, a coil, a frame, a magnetism isolating sleeve and a clamping ring and the brake seat assembly is composed of a brake seat and a rubber sheet. The brake coil holder, the friction sheet and the brake seat assembly are installed in a back bearing seat which is connected with a bearing and a check ring and is connected with a stator back sheath into integration. A motor shaft is connected and combined with the brake seat assembly through the back bearing seat. The back bearing seat is fixed to a motor outer casing tube by fasteners to form integration. One end surface of the friction sheet is provided with pits matched with a rubber dummy club on one end surface of the brake seat assembly. One shaft end of the motor shaft is provided with a cut flat horizontal surface matched with a cut flat bore of the brake seat assembly. Since friction is increased between the friction sheet and the brake seat assembly, the motor can brake rapidly. The utility model is durable, safe and reliable. The cut flat horizontal surface and a special cushion ring is added to a motor shaft, which can prevent the nuts from loosening caused by the frequent forward and backward operation of the motor and prolong the service life. The utility model has the advantages of convenient mounting or dismounting, small vibration and low noise and is suitable for mass production.

Description

The brake gear of tube shaped electric machine

Technical field

The utility model relates to the vitals in a kind of tube shaped electric machine, is used to guarantee the accurately brake gear of the tube shaped electric machine of braking work use of tube shaped electric machine.

Background technology

Behind the dump of tube shaped electric machine, because of the effect of inertia rotor after the rotor high-speed rotation still can rotate, the rolling screen door that is pulled up simultaneously causes the location inaccurate because of deadweight also can take place to glide, be the reliability and the safety in utilization of the self-lock ability of guaranteeing rolling screen door, the brake gear of tube shaped electric machine plays a part crucial.

The patent No. 03231887.1 " brake of tube shaped electric machine " is though also provide a kind of braking rapid, safe in utilization, reliable brake, but still there are some defectives in it, as friction plate two surfaces all is shiny surface, particularly when overload operation, can produce skidding, rotor is because of the frequent forward and backward commutation and the work that runs up, and locking device is easily loosening, and brake mount long term high temperature work rubber down easily comes off etc., bring inconvenience to the user, influenced its useful life simultaneously again.

Summary of the invention

Technical problem to be solved in the utility model is: a kind of brake gear of tube shaped electric machine is provided, and easy for installation, vibration is little, noise is low, braking is rapid, use saferly, reliable, prolonged useful life again.

The technical scheme in the invention for solving the above technical problem is: the brake gear of tube shaped electric machine, by having spring, coil, skeleton, magnetic shield, the brake cable ring support of collar, friction plate and the brake mount that is made of brake mount and sheet rubber make up all to be installed in and are connected with bearing, back-up ring and with stator after in the rear bearing block that links into an integrated entity of sheath, and motor shaft is connected by rear bearing block and brake mount, rear bearing block is fixed on the integral body that constitutes on the motor outer tube with securing member and forms, the rubber boss that has pit and brake mount to make up on the end face on one end face of described friction plate cooperates, and described motor shaft one axle head has the flat hole of cutting in the middle of cutting flat horizontal surface and brake mount making up to cooperate.

Compared with prior art, advantage of the present utility model is: 1, the brake cable ring support adopts powdered metallurgical material to make, element precision height, cost are low, suitable batch is produced, and one high in the middle of the end face, the edge is low, contact with friction plate in the middle of only, reduced contact-making surface and improved the coupling mechanism force of unit are, eliminate and vibrate and the minimizing noise; 2, increase uniform circular arc pit on a surface of friction plate, increase uniform through hole on brake mount one end face, the hot repressing annular rubber ring, make rubber pour into that through hole is fixed into one on the brake mount, also have boss to make rubber ring difficult drop-off, durable in use on the surface, increased and brake mount combination end face between friction and radial shear power, thereby reach fast braking, use safer, reliable; 3, have with the axis symmetry two to cut flat horizontal surface and brake mount combination on the motor shaft end and go up corresponding flat hole precision-fit, the location of cutting, and install special washer, spring washer additional at axle head, prevent nut because of becoming flexible of causing of the frequent positive and negative rotation of rotor, prolonged useful life; 4, adopted the rolling ball bearing of double-sided belt sealing ring, prevented that dust, impurity from entering motor cavity, and in the rear bearing block circlip for hole has been housed, elastic spring is housed in the brake cable ring support, mounting or dismounting are convenient; 5, brake cable ring support lead-out wire and motor windings lead-out wire all behind the overcoat insulated tube, are drawn from through hole and groove, can not cut, weigh wounded, have insulation, heat-blocking action, make installation more convenient, suitable batch production.

The accompanying drawing title

Fig. 1, the utility model structural representation.

Fig. 2, brake mount stereogram.

Fig. 3, brake mount combination stereogram.

Fig. 4, friction plate stereogram.

Fig. 5, rotor stereogram.

Fig. 6, brake cable ring support stereogram.

Fig. 7, rear bearing block stereogram.

Fig. 8, rear bearing block stereogram.

Embodiment

Embodiment is further described the utility model below in conjunction with accompanying drawing.

Brake cable ring support 2 is an overall structure with magnetic shield 3.The boss of band groove was higher than edge plane H distance in the middle of the brake cable ring support was made into by powdered metallurgical material, for reduce cost, weight reduction, on the fluted and end face through hole that communicates with coil 18, skeleton 19 is arranged on the both ends of the surface, detent 25 is arranged on the outer surface.

Friction plate 5 lower limbs are the plane, and three uniform rectangular splines are arranged on the periphery, and a surface is the plane, and it is the pit 23 of circular arc that uniform cross section is arranged on the surface.

Brake mount 7 has uniform through hole 21 by the aluminium die cast on the end face, adopt the hot pressing injecting glue to form boss 22 annular rubber rings in through hole and on its surface, is combined into the brake mount combination 6 of cutting flat hole 26, has increased the shear strength and the friction of rubber ring.

There are two with the axial line symmetry to cut flat horizontal surface 24 on one axle head of motor shaft 11.

Rear bearing block 9 is a drum shape, make by nylon material, the open slot 31 and the Wire channel in building 32 that uniform axial convex tendon 29 are arranged on the outer surface and cooperate with friction plate 5 rectangular splines, inner surface radial direction has an annular, the positioning bar 30 of cross section semicircular in shape, for reducing the distortion of working of plastics, uniform fan-shaped blind hole 27 is arranged on one end face, blind hole 28 is arranged on the periphery, pack at the bearing retaining place of rear bearing block 9 rolling ball bearing 8 and the circlip for hole 13 of double-sided belt sealing ring, the endoporus that motor shaft 11 1 ends pass bearing is inserted in the precision-fit in the flat hole 26 of cutting in the brake mount combination 6 with the flat horizontal surface 24 of cutting on it, and the special washer 14 of packing at the screw rod place, spring washer 15 and nut 16, the friction plate 5 of packing in the open slot 31 on rear bearing block 9 does not rotate it.

In the ring groove in brake cable ring support 2, the skeleton 19 of belt coil 18 is installed, put into elastic spring 4 in the ring groove on skeleton limit, through hole and the motor outer tube 12 interior electric elements that the lead 1 that is with the insulation pillar passes on skeleton and the brake cable ring support are connected, in middle boss blind hole, spring 17 is installed, it is installed in the rear bearing block 9 again, make the detent 25 on brake cable ring support 2 outer surfaces, having radial and axial positioning bar 30 with the rear bearing block inner surface cooperates, make it connect into the one that can not rotate, again with two fan-shaped projections on sheath 10 end faces behind the fan-shaped blind hole 27 of rear bearing block 9 usefulness on it and the stator, connect into the one that can not rotate, the brake gear that will always install is pressed in the motor outer tube 12 at last, and be contained in the blind hole 28 of rear bearing block periphery fixingly with two elastic cylindrical pins, rear bearing block can not be done in the motor outer tube axially, radially rotate.

When tube shaped electric machine energising rotor rotation, brake coil 18 energisings simultaneously produce the magnetic field suction, when suction during greater than spring 17 power, attract friction plate 5 left the open slot 31 on the rear bearing block move, up to the boss face of being close in the middle of the brake cable ring support 2, as shown in Figure 1, motor operate as normal at this moment.

When the tube shaped electric machine outage quits work, brake coil 18 outages lose suction, friction plate 5 is under the effect of spring force, promote its to the right the open slot on the rear bearing block move, up to the rubber raised head face of being close to brake mount combination 6, make the motor instantaneous braking that stops operating simultaneously, because of the boss on the rubber face and the pit on the friction plate are worked in coordination, increased frictional force, so its retro-speed is fast, good braking effect.

Claims

1, a kind of brake gear of tube shaped electric machine, by having spring (17), coil (18), skeleton (19), magnetic shield (3), the brake cable ring support (2) of collar, friction plate (5) and all be installed in by the brake mount combination (6) that brake mount (7) and sheet rubber constitute and be connected with bearing, back-up ring and with stator after in the rear bearing block (9) that links into an integrated entity of sheath (10), and motor shaft (11) is connected with brake mount combination (6) by rear bearing block (9), rear bearing block is fixed on motor outer tube (12) with securing member and goes up the integral body composition that constitutes, it is characterized in that having on the end face of described friction plate (5) pit (23) to cooperate with rubber boss (22) on brake mount combination (6) one end faces, described motor shaft (11) one axle heads have to be cut flat horizontal surface (24) and cooperates with the flat hole (26) of cutting that brake mount makes up on (6).

2, the brake gear of tube shaped electric machine according to claim 1 is characterized in that having on the axle head of motor shaft (11) with the axial line symmetry two to cut flat hole (26) precision-fit in the middle of cutting flat horizontal surface (24) and brake mount combination (6).

3, the brake gear of tube shaped electric machine according to claim 1 is characterized in that friction plate (5) lower limb is the plane, and uniform rectangular spline is arranged on the periphery, and a surface is the plane, and it is the pit (23) of circular arc that uniform cross section is arranged on the surface.

4, the brake gear of tube shaped electric machine according to claim 1, it is characterized in that brake mount (7) is cast into by aluminium uniform through hole (21) is arranged on the end face, the hot pressing injecting glue forms boss (22) annular rubber ring in through hole and on its surface, be combined into brake mount combination (6).

5, the brake gear of tube shaped electric machine according to claim 1, it is characterized in that the drum shape that rear bearing block (9) is made by nylon, uniform axial convex tendon (29) and open slot (31) and Wire channel in building (32) are arranged on the outer surface, inner surface radial direction has the positioning bar (30) of an annular, cross section semicircular in shape, uniform fan-shaped blind hole (27) is arranged on one end face, blind hole (28) is arranged on the periphery.

6, the brake gear of tube shaped electric machine according to claim 1, it is characterized in that brake cable ring support (2) is the boss of band groove in the middle of being made into by powdered metallurgical material, be higher than edge plane H distance, fluted on the both ends of the surface, the through hole that communicates with skeleton (19) in addition on the end face.

7, the brake gear of tube shaped electric machine according to claim 1 is characterized in that bearing is the rolling ball bearing (8) of double-sided belt sealing ring, and back-up ring is circlip for hole (13), and collar is elastic spring (4).