CN2184813Y

CN2184813Y - Automatically adjustable block brake

Info

Publication number: CN2184813Y
Application number: CN 93224403
Authority: CN
Inventors: 张旗; 张利
Original assignee: Individual
Current assignee: Zhang Li; Zhang qi
Priority date: 1993-09-14
Filing date: 1993-09-14
Publication date: 1994-12-07
Anticipated expiration: 2003-09-14

Abstract

The utility model relates to an improved automatically adjustable block brake used for mechanical slowdown and mechanical stop. The automatically adjustable block brake is characterized in that the automatically adjustable block brake is provided with an automatically adjustable releasing brake clearance mechanism, an automatic compensation brake spring elongation indicator mechanism and a damping mechanism. The automatically adjustable block brake has the functions of no need to often manually adjust, gradual braking and wind defending.

Description

Automatically adjustable block brake

The utility model relates to a kind of block brake, relates to a kind of self-regulated block brake specifically.

In mechanical reduction machinery shut-down mechanism, the shortcoming that existing block brake exists has: the tile fragment liner of break is abrasion gradually at work, gap between tile fragment liner and Brake drum increases, cause the brake spring elongation, the stroke of dynamical element strengthens, and braking moment is descended, and therefore must have the professional workforce often to adjust, increase amount of maintenance, influenced work; Braking force is to act on suddenly on the Brake drum, this is totally unfavorable to the machinery that needs slow down gradually, the straddle truck traveling break of open work particularly, tighten as braking spring, can when braking, produce and rock, generally all break is transferred pine, though the problem of rocking when having solved braking, but another serious problems have been produced, meet strong wind when being the straddle truck operation or when inactive suddenly, because the reducing of braking moment, can make straddle truck out of hand and to cause serious accident, the way that domestic Design Research Unit solves be with original two cover breaks, be increased to six covers, wherein quadruplet is to be used for windproofly, has not only increased manufacture cost but also control is complicated, the rate of fault height.

The purpose of this utility model provides a kind of frequent adjustment that do not need, and under the situation that does not reduce braking force, makes mechanism obtain gradual braking, and can reach windproof break.

The purpose of this utility model is achieved in that at break base two ends, symmetry is equipped with the mechanism in gap between automatic adjustment tile fragment and the Brake drum, makes that the gap between the tile fragment and Brake drum remains on an optimal values when declutching; At the brake rod afterbody brake rod clearance self-regulating mechanism is housed, when the liner on the tile fragment wore away like this, the stroke of brake spring elongation and dynamical element was compensated automatically, and the stroke of braking spring length and dynamical element is not increased with the abrasion of liner; Between break base and clamping plate damping mechanism is housed, damping mechanism only produces damping function in a direction, can declutch rapidly when declutching like this, and can slowly act on during band-type brake, allows mechanism obtain gradual braking.

Because the utility model is several parts more than having increased on the existing break, break is not often adjusted because of the abrasion of liner, and with once the cover break can reach gradual braking and windproof purpose, so have low cost of manufacture, advantages such as control is easy, rate of fault is little, reliable operation, growth in working life.

Below in conjunction with accompanying drawing the utility model is described in detail.

Fig. 1 is that of the present utility model facing partly cutd open figure

Fig. 2 is the sectional drawing of damping tube of the present utility model

In break base (21), the rotating gap tuned plate (13) that declutches is housed on the bearing pin of both sides (18), limited post (15) top is passed in the hole in tuned plate (13) outside, and it is spacing with nut (14), limited post (15) middle part is with back-up spring (16), the bottom is fixed on the base (21), tuned plate (13) forms angle with clamping plate (10), angle includes roller bearing (3), when liner (12) abrasion attenuation causes that both sides clamping plate (10) slope inwardly, tuned plate (13) is kept off and can not slope inwardly by nut (14), and roller bearing (3) moves down the abrasion loss of compensating liner (12) because of deadweight.Make braking spring (5) elongation promotion side female (7) that the contrary arrow F direction of brake rod (6) is moved because two clamping plate (10) slope inwardly, the working stroke of dynamical element (9) is strengthened.Dynamical element when declutching (9) promotes brake rod (6) along arrow F direction and passes through female (7) the compression brake spring (5) in side, the effect of spring (4) makes two clamping plate (10) outward-dipping owing to declutch, make the also outward-dipping compression back-up spring of tuned plate (13) (16) by roller bearing (3), be against at last on the step of limited post (15), gap delta is constant between tuned plate (13) and the limited post (15), therefore tile fragment (11) moves back apart from not increasing with liner (12) abrasion, this just makes brake rod (6) and brake rod tuned plate (17) produce the gap, tuned plate (17) outwards rotates the tuned plate (17) and the angle of left clamping plate (10) is increased, last roller bearing (3) moves down because of deadweight, thereby the abrasion situation that makes liner (12) do not influence the stroke of braking spring (5) length and dynamical element (9), guaranteed the constant of braking moment.

In the break left bottom damping tube (20) being housed links to each other with the both sides clamping plate (10) of break by linkage mechanism (2), damping tube internal structure as shown in Figure 2, comprise connecting rod (19), cylinder barrel (22), non-return valve block (25), piston (23), modulating valve (24), when connecting rod (19) the non-return valve block (25) that is fixed on when promptly declutching on the connecting rod (19) that moves upward is lifted, open the hole on the piston (23), at this moment the liquid on top (or gas) flows into the bottom rapidly, and break declutches rapidly; When connecting rod (19) moves downward, non-return valve block (25) is blocked the hole on the piston (23), liquid (or gas), can only from modulating valve (24), pass through, play damping function, length was adjusted by modulating valve (24) and was finished the slow band-type brake of break damping period.Need not reduce to brake spring (5) strength and just can obtain gradual braking effect (purpose), therefore, can play windproof purpose again with playing the gradual braking effect once the cover break.

Damping mechanism only is applicable to the mechanical reduction braking, if make the rapid braking of machinery that damping mechanism can be installed.

Claims

1, a kind of self-regulated block brake comprises base (21), clamping plate (10), tile fragment (11), spring bracket (8), braking spring (5), the spring that declutches (4), brake rod (6), dynamical element (9), it is characterized in that:

A, base (21) and clamping plate (10) joint are equipped with the gap tuned plate (13) of compensating liner (12) abrasion loss automatically;

The afterbody of b, brake rod (6) is equipped with the brake rod tuned plate (17) of automatic compensation braking spring (5) elongation;

C, base one side are equipped with the damping tube (20) of gradual braking, are connected with break clamping plate (10) by a cover linkage mechanism (2).

2, self-regulated block brake according to claim 1, it is characterized in that tuned plate (13) and clamping plate (10) form angle, one roller bearing (3) is arranged in the angle, tuned plate (13) has a gap delta with the limited post (15) that is with back-up spring (16), and gap delta is moved back apart from corresponding with tile fragment (11).

3, self-regulated block brake according to claim 1 is characterized in that brake rod tuned plate (17) and clamping plate (10) form angle, have a roller bearing (3) in the angle.

4, self-regulated block brake according to claim 1 is characterized in that having on the damping tube one way stop peturn valve and an adjustment valve.