CN201225373Y

CN201225373Y - Brake with improved structure

Info

Publication number: CN201225373Y
Application number: CNU200820041839XU
Authority: CN
Inventors: 张鹤; 曹建文; 房文娜; 周卫
Original assignee: SUZHOU TONGRUN DRIVE EQUIPMENT CO Ltd
Current assignee: SUZHOU TONGRUN DRIVE EQUIPMENT CO Ltd
Priority date: 2008-07-17
Filing date: 2008-07-17
Publication date: 2009-04-22
Anticipated expiration: 2018-07-17

Abstract

The utility model relates to a brake with an improved structure, which belongs to the technical field of an electromagnetic brake. The brake comprises a secondary adjusting bolt arranged on the upper end part of a brake arm, and a push rod which is arranged on a movable iron core and is used for matching with the secondary adjusting bolt when the brake is taken off. The brake is characterized in that a groove is arranged in the middle of the front end part at one side where the push rod is close to the secondary adjusting bolt, and a rolling element is rotatably arranged in the groove. Because the rolling element is arranged in the groove in the middle of the front end part of the push rod, the push rod contacts the secondary adjusting bolt by the rolling element when the brake is turned on, the friction force generated by the interaction of the push rod and the secondary adjusting bolt is converted to rolling friction from primary plane sliding friction, the friction force can be effectively reduced, the loss of the electromagnetic force is reduced, and meanwhile, the wear and tear suffered by the end surface of the secondary adjusting bolt is improved obviously, therefore, the service life of the brake is prolonged, and the braking system running is enabled to be more reliable and safer.

Description

Structure improved break

Technical field

The utility model relates to a kind of structure improved break, belongs to the electromagnetic brake technical field.

Background technique

Electromagnetic brake in the prior art, its structure is disclosed by Fig. 1, Fig. 2, Fig. 3, Fig. 4, it mainly comprises brake arm 8, brake shoe 5, brake shoe friction plate 6, the first adjustment bolt 3, pull bar 12, brake spring 11, spring seat 10, the second adjustment bolt 14, push rod 15, static iron core 16, moving iron core 17, coil 18, barrel-type casing 19, body standing part 20, and described brake arm 8 is by being connected and fixed pin 1 hub setting on body; Described brake shoe friction plate 6 sticks on the brake shoe 5 and corresponding to Brake drum 7, brake shoe 5 by connecting pin 4 hub settings on brake arm 8 and can rotate around connecting pin 4; Described first adjusts that bolt 3 is screwed on the brake arm 8 and inconsistent with brake shoe 5, adjusts the position that bolt 3 can be adjusted brake shoe 5 relative brake arms 8 by first, and locks firm with first locking nut 2 after adjusting the position; Described pull bar 12 is connected on the body standing part 20 after passing brake arm 8; Described brake spring 11 is set on the pull bar 12, the one end is 10 inconsistent with the spring seat that is located at pull bar 12 ends, corresponding locating slot is inconsistent on the other end and the brake arm 8, on the pull bar 12 in spring seat 10 outsides, be connected with second locking nut 9, screw-in by second locking nut 9 screws out, can adjust the spring force of brake spring 11, this spring force makes brake arm 8 firmly be pressed on the Brake drum 7 by the brake shoe friction plate 6 on the brake shoe 5, makes Brake drum 7 shut down (as shown in Figure 1); Described second adjusts the upper end that bolt 14 is installed in brake arm 8, is connected with the 3rd locking nut 13 on it; Be provided with coil 18 in the described barrel-type casing 19 and moving iron core 17 is housed, and be fastened with static iron core 16 by screw at the both sides of barrel-type casing 19 port, extend to outside the barrel-type casing 19 after being riveted on the through hole of push rod 15 in the middle of passing static iron core 16 on the moving iron core 17, and corresponding to the described second adjustment bolt 14, under off-position, push rod 15 on the moving iron core 17 and second is adjusted bolt 14 on same axis, and axially movable, does not have influence on the braking function of brake arm 8; See also Fig. 3, Figure 3 shows that break is in open mode, under this state, coil 18 energisings, static iron core 16, moving iron core 17, and barrel-type casing 19 between be formed with electromagnetic circuit, produce electromagnetic force, make static iron core 16 attract moving iron core 17, moving iron core 17 moves towards static iron core 16 directions, when the push rod 16 on the moving iron core 17 pushed up adjustment bolt 14, under the effect of electromagnetic force, electromagnetic force overcame the spring force effect of brake spring 11, make brake shoe 5 leave the surface of Brake drum 7 together with the brake shoe friction plate 6 on it, Brake drum 7 beginnings are freely rotated.

See also Fig. 2, Fig. 4, when break is under the braking state, push rod 15 and second is adjusted bolt 14 and is positioned at same axis, and when break is in open mode, because second adjusts the thrust that bolt 14 is subjected to push rod 16, force brake arm 8 (comprising connection part thereon) to rotate around being connected and fixed pin 1, make that the second adjustment bolt 14 is no longer parallel with the axis of push rod 15, promptly push rod 15 makes second to adjust bolt 14 in radially generation skew when backing down brake arm 8.The existing problem of above-mentioned prior art is: because second adjust both end faces of being in contact with one another of bolt 14 and push rod 15 and all be designed to the plane, the power of opening a sluice gate suffered when opening is enough big, make second to adjust bolt 14 and push rod 15 very big frictional force of generation when interacting, cause the loss of electromagnetic force, when constantly moving for a long time, second end face of adjusting bolt 14 can produce pit, the frictional force that produces when both are interacted further increases, thereby strengthened the loss of electromagnetic force, limit situation is effectively to open a sluice gate, and produces the failure phenomenon of brake rubber block wearing and tearing.

Summary of the invention

The purpose of this utility model is will provide a kind of to reduce the loss of electromagnetic force with the frictional force of adjusting bolt generation when interacting and then can guarantee that the braking system running is safe and reliable, the structure improved break of long service life by reducing push rod.

The purpose of this utility model reaches like this, a kind of structure improved break, comprise that being installed in second of brake arm 8 upper end portions adjusts bolt 14 and be installed in the push rod 15 that being used on the moving iron core 17 cooperates with the second adjustment bolt 14 when break is opened a sluice gate, be characterized in: in the middle of the front end of described push rod 15, offer groove 22, in groove 22, be provided with rolling element 21 rotationally near the second adjustment bolt, 14 1 sides.

Rolling element 21 described in the utility model is a steel ball.

Rolling element 21 described in the utility model leans out outside the groove 22, and adjusts bolt 14 corresponding to described second.

The utility model is owing to be equipped with rolling element 21 in the groove 22 in the middle of push rod 15 front ends, when break is opened, push rod 15 is adjusted bolt 14 by rolling element 21 and second and is contacted, both are converted to rolling friction by original planar slide friction at the frictional force that produces that interacts, can effectively reduce frictional force, reduce the loss of electromagnetic force, simultaneously, the suffered wearing and tearing of second adjustment bolt 14 end faces are significantly improved, thereby can prolong the working life of break, make the braking system running more reliable and secure.

Description of drawings

Structural representation when Fig. 1 is in braking state for break in the prior art.

Fig. 2 is an A portion enlarged view among Fig. 1.

Structural representation when Fig. 3 is in open mode for break in the prior art.

Fig. 4 is a B portion enlarged view among Fig. 3.

Structural representation when Fig. 5 is in braking state for the utility model break.

Fig. 6 is the C portion enlarged view of Fig. 5.

Structural representation when Fig. 7 is in open mode for the utility model break.

Fig. 8 is the D portion enlarged view of Fig. 7.

Among the figure: 1. be connected and fixed pin, 2. first locking nut, 3. first adjust bolt, 4. connecting pin, 5. brake shoe, 6. the brake shoe friction plate, 7. Brake drum, 8. brake arm, 9. second locking nut, 10. spring seat, 11. brake springs, 12. pull bars, 13. the 3rd locking nuts, 14. second are adjusted bolts, 15. push rods, 16. static iron cores, 17. moving iron cores, 18. coils, 19. barrel-type casings, 20. body standing parts, 21. rolling elements, 22. grooves.

Embodiment

By the description of claimant, will help to understand the utility model more, and good effect of the present utility model is embodied more, but embodiment should not be considered as the restriction to some extent to technical solutions of the utility model embodiment.

See also Fig. 5 and in conjunction with Fig. 6, what disclosed among the figure is the structural representation of the utility model break when being in braking state.It comprises that being installed in second of brake arm 8 upper end portions adjusts bolt 14 and be installed in the push rod 15 that moves on the iron core 17, in the middle of the front end of described push rod 15, offer groove 22 near the second adjustment bolt, 14 1 sides, in groove 22, be provided with rolling element 21 rotationally, described rolling element 21 is a steel ball, steel ball leans out outside the described groove 22, and adjusts bolt 14 corresponding to described second.Here need to prove: because compared with the prior art, the utility model has only been set up one at the front end of push rod 15 and has been used for adjusting the rolling element 21 that bolt 14 realizations are rolled and cooperated with second when break is opened a sluice gate, and other component of break and the relation of installing are identical with prior art, and therefore below in conjunction with Fig. 5, Fig. 6 the underdraw installation and the braking process of each component in the utility model break: described brake arm 8 is by being connected and fixed pin 1 hub setting on body; Described brake shoe friction plate 6 sticks on the inboard and corresponding with the outer peripheral surface of Brake drum 7 of brake shoe 5, and brake shoe 5 passes through connecting pin 4 hub setting rotationally on brake arm 8; Described first adjusts that bolt 3 is screwed on the brake arm 8 and inconsistent with brake shoe 5, adjusts the position that bolt 3 can be adjusted brake shoe 5 relative brake arms 8 by first, and locks firm with first locking nut 2 after adjusting the position; Described pull bar 12 is connected on the body standing part 20 after passing brake arm 8; Described brake spring 11 is set on the pull bar 12, the one end is 10 inconsistent with the spring seat that is located at pull bar 12 ends, corresponding locating slot is inconsistent on the other end and the brake arm 8, on the pull bar 12 in spring seat 10 outsides, be connected with second locking nut 9, screw-in by second locking nut 9 screws out, can adjust the spring force of brake spring 11, this spring force makes brake arm 8 firmly be pressed on the Brake drum 7 by the brake shoe friction plate 6 on the brake shoe 5, makes Brake drum 7 shut down (as shown in Figure 5); Described second adjusts the upper end that bolt 14 is installed in brake arm 8, is connected with the 3rd locking nut 13 on it; Be provided with coil 18 in the described barrel-type casing 19 and moving iron core 17 is housed, and be fastened with static iron core 16 by screw at the both sides of barrel-type casing 19 port, extend to outside the barrel-type casing 19 after being riveted on the through hole of push rod 15 in the middle of passing static iron core 16 on the moving iron core 17, be inlaid with rolling element 21 in the groove 22 in the middle of described push rod 15 front ends, rolling element 21 can freely rotate in groove 22, described rolling element 21 can be a steel ball, steel ball leans out outside the described groove 22, and adjusts bolt 14 corresponding to described second.Under off-position, the roller 21 on the push rod 15 and second is adjusted bolt 14 (as shown in Figure 6) on same axis, and can move axially with push rod 15, does not have influence on the braking function of brake arm 8.

See also Fig. 7 and in conjunction with Fig. 8, what disclosed among the figure is the structural representation that the utility model break is in open mode.Under this state, coil 18 energisings, static iron core 16, moving iron core 17, and barrel-type casing 19 between be formed with electromagnetic circuit, produce electromagnetic force, make static iron core 16 attract moving iron core 17, moving iron core 17 moves towards static iron core 16 directions, when the rolling element on the push rod 16 21 pushes up adjustment bolt 14, under the effect of electromagnetic force, electromagnetic force overcomes the spring force effect of brake spring 11, make brake shoe 5 leave the surface of Brake drum 7 together with the brake shoe friction plate 6 on it, Brake drum 7 beginnings are freely rotated.In this process, because second adjusts the thrust that bolt 14 is subjected to push rod 16 front end rolling elements 21, force brake arm 8 (comprising connection part thereon) to rotate around being connected and fixed pin 1, make that the second adjustment bolt 14 is no longer parallel with the axis of rolling element 21, push rod 15, promptly rolling element 21 makes second to adjust bolt 14 in radially generation skew (shown in Figure 8) when backing down brake arm 8.In said structure, because the second planar slide friction of adjusting bolt 14 and push rod 15 in the prior art effectively is converted into second rolling friction of adjusting between bolt 14 and the rolling element 21, not only reduced surface friction drag, saved electromagnetic force, substantially eliminated simultaneously wearing and tearing, made that the braking system running is more reliable and secure the second adjustment bolt, 14 end faces.

Claims

1, a kind of structure improved break, comprise that being installed in second of brake arm (8) upper end portion adjusts bolt (14) and be installed in the push rod (15) that being used on the moving iron core (17) cooperates with the second adjustment bolt (14) when break is opened a sluice gate, it is characterized in that in the middle of the front end of described push rod (15), offering groove (22), in groove (22), be provided with rolling element (21) rotationally near the second adjustment bolt (14) one sides.

2, structure improved break according to claim 1 is characterized in that described rolling element (21) is a steel ball.

3, structure improved break according to claim 1 is characterized in that described rolling element (21) leans out outside the groove (22), and adjusts bolt (14) corresponding to described second.