CN2383187Y

CN2383187Y - Driving device for brake

Info

Publication number: CN2383187Y
Application number: CN 99201446
Authority: CN
Inventors: 秦康
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-02-04
Filing date: 1999-02-04
Publication date: 2000-06-14
Anticipated expiration: 2009-02-04

Abstract

The utility model discloses a driving device for a brake, a brake component is transmitted by a link rod which is driven by a push rod through electromagnetic action, a copper sheath is arranged in a central hole on the bottom of the push rod, a guide rod is arranged in the copper sheath, the lower part of the guide rod is connected with a lower end cover, and a spring is arranged between the lower end cover and the bottom of the push rod; the middle part of the push rod is provided with a piece of armature iron, the surface of the armature iron is provided with a degaussing copper sheath, and the armature iron and an iron core sucking surface form a cone table shape; the push rod is penetrated through an upper end cover hole which is provided with the copper sheath to be linked with a connecting rod through the top end of the push rod, a protective sheath is arranged between the outside of an upper end cover and the upper end of the push rod, and a pressure spring is arranged between the upper end cover and a supporting plate on the connecting rod. The push rod of the utility model has the advantages of abrasion resistance, and sensitive and reliable action; furthermore, the abrasion to the working surface of the brake component can be compensated by the utility model.

Description

A kind of drive unit of brake

The utility model relates to a kind of drive unit of improved brake, particularly a kind of brake, is applicable to that braking is carried out in the driving of dynamic power machine rotating part.

In the commonly used machine power equipment of prior art, the YWZ series power hydraulic pressure pusher brake that is adopted, be by fluid pressure type promote device by with the link component of its connection and but the power execution unit finish braking.The power source of fluid pressure type promotion device is the motor by the certain power of Electric Traction, drive driving-chain and be converted to mechanical braking thrust by hydraulic pressure transfer, it is many that it drives the work system link, complex structure, safeguard inconvenience, and motor needs the change power along with the braking moment size.In addition, the Chinese patent communique discloses " a kind of electromagnet " (ZL95225623.1) technology, drives with electromagnet structure, and part has replaced hydraulic driver.But push rod concentrated wear occurs more easily with relevant sliding fit face friction, causes iron core and armature clutch start on the push rod to occur rocking, and sensitivity is reduced.Moreover threaded connector externally exposes easily and is covered with dust, and safeguards the cleaning trouble.In addition after the braking brake spare wearing and tearing, uncompensated ability influences the reliability of braking work.

The purpose of this utility model is to avoid the weak point of above-mentioned technology, reduces the push rod wearing and tearing and provide to set up copper bush, uses spring force the wearing and tearing of braking brake spare, associated part to be made the drive unit of a kind of brake of compensation.

The purpose of this utility model is achieved in that the drive unit of brake of the present utility model, be by the connecting rod 20 that connects mutually with brake component, connect end cap iron core 11, armature is equipped with at push rod 7 middle parts, housing 6 and two windings 10 with certain enamelled wire line footpath, effective quantity number of turn are formed, and line group 10 is driven winding L 1 and kept winding L 2 by armature and constitutes.It is characterized in that being equipped with in push rod 7 bottoms the guide post 3 of axial line same with it, the top cunning of guide post 3 attaches together and fits over push rod 7 bottoms and have in the centre bore of copper sheathing 5.Guide post 3 bottoms link bottom end cover 2, between itself and push rod 7 lower surfaces spring 4 are housed, and are the coupling 1 that has external hole on the outer face of bottom end cover 2.Armature is equipped with at push rod 7 middle parts, and it cooperates on the axial adhesive face of iron core 11, demagnetization copper sheathing 8 is housed, slippage when fixedly preventing that adhesive from leaving with collar 9.Adhesive face is frustum type or the identical trapezoid cross section of convex-concave.Push rod 7 passes the centre bore that copper sheathing 12 is housed of upper end cover iron core 11, and top is connected by pin 16 and connecting rod 20, and connecting rod 20 connects the braking brake member.Folding dustproof sheath 14 is installed, with screw and securing member fixing two-port respectively between upper end cover outer end and push rod 7 tops.Support plate 17 is housed on connecting rod 20, fixing with jump ring 18.Tension spring 19 1 ends collude and are contained on the support plate 17, and the other end is fixed on the upper end cover with screw 13.Peripheric surface can be square or circular housing 6 and slightly is down " separating " shape, or up big and down small tubular, two ends are installed with upper and lower end cap, outside the upper inside wall or in the ring control winding 10 of being with skeleton are housed, make armature, iron core adhesive pulling push rod 7 with the switching electricity, drive braking element and brake.Push rod 7 vertically, when down mobile, be slidingly to be combined in copper sheathing 5, under the support of copper sheathing 12, spring 4 is upwards pleaded push rod 7 according to support lower end capping, tension spring 19 then has according to support plate 17, supports upper end cover and forces push rod 7 to lift trend up.

The utility model advantage compared with prior art is: because the push rod slide down cooperates mobile is under the support of copper sheathing, thereby makes push rod reduce wearing and tearing; Because what have that stretching of tension spring draw effect and demagnetization copper sheathing reduces the remanent magnetism effect, afterwards iron core, armature hightail responsibility to make outage; The clutch reaction sensitivity is strengthened.The spring support is propped up at bottom end cover and is being pushed away the push rod bottom, can compensate the wearing and tearing of adhesive face and the wearing and tearing of skidding spare, strengthens the reliability of brake work.

Below in conjunction with accompanying drawing the utility model is further described:

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

Among the figure: 1, coupling, 2, bottom end cover, 3, guide post, 4, spring,

5, copper sheathing, 6, housing, 7, push rod, 8, the demagnetization steel,

9, collar, 10, winding, 11, iron core, 12, copper sheathing,

13, screw, 14, sheath, 15, securing member, 16, pin,

17, support plate, 18, jump ring, 19, tension spring, 20, connecting rod.

Referring to Fig. 1, brake driver gear of the present utility model, its push rod 7 upper ends link by pin 16 and connecting rod 20, the copper sheathing 12 that passes on sheath 14 and the iron core 11 is linking armature, it is frustum type or trapezoid cross section with collar 9 secured cores 11 with armature adhesive face also that demagnetization copper sheathing 8 is equipped with on the armature surface, there is centre bore 7 times bottoms of push rod, lining dress copper sheathing 5 on the hole, the bottom end cover that has an end coupling 1 is crossed guide post 3 is housed on 2, between bottom end cover 2 and push rod 7 lower surfaces, spring 4 is housed, guide post 3 upper ends and copper sheathing 5 sliding fits are contained in the following centre bore of push rod 7, housing 6 slightly is the shape of separating, the winding of band skeleton is housed on the last cavity wall, and winding is two and has alignment footpath, effective quantity number of turn, promptly armature drives winding L ₁With keep winding L ₂Constitute, (as line footpath and the number of turn at enamelled wire with Φ 0.57mm/ Φ 0.62mm, L ₁Flat around 2800～3500 circles, L ₂Need with Φ 0.15mm or Φ 0.21mm enamelled wire, flat around 5000～9000 circles).Be equipped with at housing 6 two ends the upper end weak with bottom end cover 2, upper end cover, push rod 7 about between the stroke polished rod section collapsible dustproof sheath 14 is housed, sheath 14 is held greatly and is fixed on the upper end cover outer face with screw, small end is with being fastened on the push rod 7.Support plate 17 and fixing with jump ring 18 is housed on connecting rod 20, tension spring 19 is housed between support plate 17 and upper end cover.Tension spring 19 1 ends are fixed on the upper end cover with screw 13, and the other end colludes and is contained on the support plate 17.With winding switching electricity make armature, iron core adhesive or be separated into drive push rod to transmission, braking element work whether, cooperate push rod 7 to reduce its wearing and tearing with copper sheathing, with spring 4 and tension spring 19 and the demagnetization copper sheathing 8 feasible start sensitivities that drive, can give suitable compensation to the wearing and tearing that frequent operation causes, strengthened the brake functional reliability, reached the purpose of the utility model with this.

Claims

1, a kind of drive unit of brake by connecting rod 20, connect end cap iron core 11, push rod 7 middle parts and be equipped with that armature, housing 6 and two have alignment footpath, effectively the windings 10 of the quantity number of turn are formed, is characterized in that:

The guide post 3 of axial line same with it is equipped with in the bottom of a, push rod 7, the top cunning of guide post 3 attaches together and fits over push rod 7 bottoms and have in the centre bore of copper sheathing 5, guide post 3 bottoms are linking bottom end cover 2, between itself and push rod 7 lower surfaces spring 4 is housed, on the outer face of bottom end cover 2, has the coupling 1 in external hole;

Armature is equipped with at b, push rod 7 middle parts, and it cooperates on the axial adhesive face of iron core 11, and demagnetization copper sheathing 8 is housed, fixing with collar 9, adhesive face is frustum type, and push rod 7 passes the centre bore that copper sheathing 12 is housed of upper end cover iron core 11, and top is connected by pin 16 and connecting rod 20;

Folding dustproof sheath 14 is installed between c, upper end cover outer face and push rod 7 tops, with screw and securing member 15 fixing two-port respectively, support plate 17 is housed on the connecting rod 20, fixing with jump ring 18, compression spring 19 1 ends collude and are contained on the support plate 17, and end is fixed on the upper end cover with screw 13 in addition;

D, housing 6 slightly are down " separating " shape, and two ends are installed with upper and lower end cap, and the winding 10 of band skeleton is equipped with at the upper inside wall place.