CN85205798U

CN85205798U - Automatically compensating brake

Info

Publication number: CN85205798U
Application number: CN 85205798
Authority: CN
Inventors: 彭耀
Original assignee: Xiangtan Iron & Steel Plant
Current assignee: Xiangtan Iron & Steel Plant
Priority date: 1985-12-30
Filing date: 1985-12-30
Publication date: 1986-12-17

Abstract

The utility model provides an improved brake, in particular to a point-disc type brake which can realize the automatic compensation. The point-disc type brake which can realize the automatic compensation is characterized in that the locking device thereof comprises a sleeve ring with a certain shape and a specific taper, and a locking member. The utility model has the advantages of simple manufacturing process, convenient maintenance, and long service life; the locking device thereof is helpful for completing the brake, simultaneously, automatically compensating the wear of a friction plate; the point-disc type brake which can realize the automatic compensation is suitable for the brake of the rotation of the common machinery, such as a pipe-type strand rope machine, etc. in the manufactured article trade.

Description

Automatically compensating brake

The utility model relates to a kind of improved break, particularly a kind of disc brake with fixed caliper that can compensate automatically, and it is applicable to the braking of general mechanical rotation aspect, is specially adapted to the braking of tubular type Bunching machine.

Bunching machine in China's goods industry all is to adopt old-fashioned electromagnetic brake formula break at present, and its break of Bunching machine of introducing from Japan has the function of automatic compensation brake block wearing and tearing.

Lock sleeve in Japan's Bunching machine braking device is made up of a kind of square close winding spring, and this square close winding spring does not have manufacturer production at home at present, introduces also very difficulty.The processing and fabricating of this square close winding spring and maintenance assembling are very inconvenient simultaneously.Task of the present utility model is that a kind of improved locking device will be provided, and it can make manufacturing process simple, keeps in repair easy to assemblyly, can finish skidding, can satisfy the technical specifications of automatic friction compensation pad wear simultaneously again.

Task of the present utility model is finished as follows, the structure of the automatic compensation point disk type braker after the improvement is with reference to shown in Figure 1, pull bar (1) is fixed on the support, outer surface is that the locking element (2) of taper pawl formula is embraced on pull bar (1), internal surface is that the tapered collar (3) of taper is enclosed within on the taper pawl formula locking element (2), an one outer rim is pushed down by an end of spring (4), the other end of pressing plate (5) pressing spring (4) also is fixed on the piston (6), tapered collar (3) is compressed taper pawl formula locking element (2) by its conical surface in advance, it is held tightly on pull bar (1), so just, produced coupling mechanism force, the locking device after the improvement can be adjusted the size of coupling mechanism force by the relative position of adjusting taper pawl formula locking element (2) and tapered collar (3).When the internal diameter of taper pawl formula locking element through long-term use wearing and tearing after, its coupling mechanism force is inevitable to be reduced along with the wearing and tearing of taper pawl formula locking element (2) internal diameter, at this moment as long as the relative position of tapered collar (3) with taper pawl formula locking element (2) changed, be about to tapered collar (3) or taper pawl formula locking element (2) and move a segment distance along its taper direction.Can it be held tightly on pull bar (1) taper pawl formula locking element (2) compression by the conical surface of tapered collar (3) again, reach needed coupling mechanism force.So the locking device after improving can be by simple method, the wearing and tearing of compensation taper pawl formula locking element (2), the working life of improving part.The working principle of the break after the improvement is: during brake, high pressure oil enters, promote piston (6) and move to right, be fixed on the tight brake disc of friction plate on the piston (6), realize skidding, piston (6) is when moving to right, the pressing plate that is connected with it (5) promotes an end of spring (4), and because of the other end of spring (4) acts on the taper pawl formula locking element (2) by tapered collar (3), taper pawl formula locking element (2) is motionless, so spring (4) is compressed, compression can be stored.After the release, spring (4) releases energy piston (6) is resetted, brake finishes behind friction disc wear, piston (6) moves to right apart from increasing, pressing plate (5) holddown spring (4) back moves to right together because of the increase that moves to right can promote taper pawl formula locking element (2), after the oil release, taper pawl formula locking element (2) is just locked on a new position of pull bar (1), and the spring of compression (4) resets piston (6).At this moment, piston (6) has had displacement with respect to the origin-location, and its displacement size is exactly the wear extent of friction plate.Like this, just guaranteed to remain certain distance between friction plate and the brake disc, the wear extent of friction plate is compensated.Guarantee the sensitivity and the reliability of braking.Why this device can guarantee both to have had brake, has compensating action again concurrently, is to set up because satisfy following formula:

F _{Piston moves}＜F _Bullet＜F _Lock

F _{Piston moves}+ F _Bullet+ F _Lock＜F _Oil

Locking device after the improvement has brought very big convenience for on-the-spot maintenance assembling work owing to simple in structure, has saved the repair time.From processing, assembling technology procedure, the performance of this locking device is better than the performance of Japanese device of the same type fully.Can save the foreign exchange that is worth 800 yuan of RMB from the every cover of economic benefit.Break after the improvement, reflection is sensitive, reliable in action, long service life, remarkable in economical benefits also has the function of automatic friction compensation pad wear concurrently.Embodiment: locking device is made up of parts such as taper pawl formula lock sleeve, tapered sleeve, spring, pressing plate, pull bars.

The course of working of relevant part is as follows: be sandwiched in lathe with φ 12mm round steel, the heart bores the about deeply 25mm circular hole of a φ 5mm therein, it is φ 8mm that the outer surface car of round steel is become diameter, length is the cylndrical surface of 12mm, on this basis, is end diameter with φ 8mm, move upper slide rest, car system tapering is 6～12 ° a conical surface, and cuts off at a segment distance place, and the Outside diameter that makes conical surface is φ 10mm; At this moment, the lathe upper slide rest is motionless, and oppositely processing an internal surface is taper, outer surface is the cylindrical of φ 14mm, and thickness is the circular cone ring of 8mm, i.e. tapered sleeve, like this, the cylindrical tapered sleeve is consistent with the conical surface tapering of female cone ring, reaches good cooperation, then, the cylindrical tapered sleeve is delivered on the milling machine, clamp the about 5～6mm of its cylindrical end, with 2mm thick disk milling cutter along its axial direction mill two orthogonal, long be the groove of 15.5mm.So just, formed equally distributed four pawls, on vice, saw removes a part of cylindrical end again, guarantees that the total length of taper pawl formula lock sleeve is 17mm.Taper pawl formula lock sleeve and tapered sleeve are to this completion of processing, and pressing plate shape such as pad are of a size of φ 17.5mm * φ 5.5mm * 2mm; Pull bar one end is a polished rod, and length 33mm, diameter are φ 5mm, with the endoporus of taper pawl formula lock sleeve for being slidingly matched.The other end of pull bar is the closely-pitched double-screw bolt of M10 * 1, and length is 7mm, and the spring specification is: stage clip 2.2 * 11.2 * 11.2.

The assembly technology of locking device is as follows: the polished rod part that pressing plate, spring, tapered sleeve, taper pawl formula lock sleeve are inserted in pull bar successively; (the one external diameter is slightly smaller than the big end of pawl formula lock sleeve, and endoporus is a bit larger tham the polished rod section diameter of pull bar to use two special cushion blocks then; Its two endoporus is a bit larger tham φ 10mm, and external diameter is not limit).Withstand before and after the package unit, be sandwiched in the vice handle, make pawl formula lock sleeve clamp-on tapered sleeve, like this, lock sleeve is just embraced on pull bar, and has certain power of holding tightly.

Claims

1, a break of being made up of pull bar (1), locking device (2) and (3), spring (4), pressing plate (5), piston (6) etc. is characterized in that the locking device of this break is made up of the collar with given shape and specific taper (3) and locking element (2).

2, by the described break of claim 1, the outer surface that it is characterized in that the collar (3) is the cylndrical surface, and internal surface is a conical surface, and its tapering is 6 °～12 °.

3, by claim 1 or 2 described breaks, it is characterized in that locking element (2) is made up of the pawl formula blocks more than two, its internal surface is the cylndrical surface, and outer surface is a conical surface, and its tapering also is 6 °～12 °.