CN206842825U - The brake control mechanism of the step chains wheel shaft extra brake devices of escalator - Google Patents

Abstract

A kind of brake control mechanism of the step chains wheel shaft extra brake devices of escalator, escalator includes truss, step chains wheel shaft extra brake devices include brake disc, brake control mechanism is caught including brake disc holds relieving mechanism and brake-shoe action control mechanism, brake disc, which is caught, holds relieving mechanism and includes Brake shoe abutment and brake-shoe, Brake shoe abutment is fixed on truss, Brake shoe abutment has brake-shoe chamber, brake-shoe is located at brake-shoe intracavitary, there is brake-shoe hub setting axle in the middle part of brake-shoe, hoof hub setting processed is pivotally supported on Brake shoe abutment and is being connected through Brake shoe abutment with brake-shoe action control mechanism, the brake-shoe action control mechanism includes solenoid valve bracket, magnetic valve, pull bar, lever, crank arm and pull bar and crank arm.It is simple in construction, reduce cost；Ensure safety；Shorten the set-up time while shorten the down time of escalator.

Description

The brake control mechanism of the step chains wheel shaft extra brake devices of escalator

Technical field

The utility model belongs to escalator safety devices technical field, and in particular to a kind of ladder sprocket wheel of escalator The brake control mechanism of axle extra brake devices.

Background technology

Escalator is widely used in market, airport, station and scenic spot etc. of going sightseeing.As is known in the industry, help automatically Ladder work make during be possible to occur such as drive chain fracture, host work brake failure, main frame hypervelocity, suddenly power off, The situation of main frame reverse etc during up, although the probability for such situation occur is extremely low even very little, It is serious for caused injury is influenceed or even be possible to caused by passenger.Just in consideration of it, being commonly provided with the escalator There are the extra brake devices for being intended to tackle aforementioned circumstances, by extra brake devices to power transmission shaft（Industry custom claims step chains wheel shaft） Braking, makes step driving chain and handrail driving chain stop motion, to ensure safety.

The technical information of the brake apparatus with foregoing function can be seen in disclosed Chinese patent literature, such as CN102219145B（The safety catch of escalator or moving sidewalk）And CN104627810A（Escalator adds Brake apparatus）, this two patent formulas have highlighted electromagnetic actuator（That is brake actuator）, specifically, by Adhesive electromagnet drivening rod（Also referred to as control stick）, the ratchet being connected with connecting rod is driven by connecting rod, by ratchet to pawl base（Also referred to as Ratchet）Act, i.e. when ratchet and pawl base coordinate, then brake escalator, vice versa.But this two special Profit does not provide the enlightenment of the concrete structure of friction stop mechanism, however, friction stop mechanism is whether rational in infrastructure for certainly The braking reliability of dynamic staircase is exactly highly important.

Application for a patent for invention publication No. CN106516959A recommends have " the two section type extra brake devices of escalator ", should Patent formula as a result of inner attrition piece stop mechanism and outside friction disc stop mechanism, thus can significantly improve stop can The property depend on, which is used, to ensure safety, particularly suitable for big height, super large height（As 50 meters of hoisting depth so that more than）Automatic help Ladder.

As is known in the industry, sharply increased with the social recoverable amount of escalator, the accident triggered by escalator Absolute number also accordingly increases and many accidents are shocking.Elevator industry authorities in China's are in a manner of mandatory provision in view of this It is required that the additional system of step chains wheel shaft is installed additional to the escalator i.e. not yet into market not yet sold in escalator production firm Dynamic device, the emergent stop effect to step chains wheel shaft is played by the step chains wheel shaft extra brake devices.It is such as disconnected when suddenly When electric, step chains wheel shaft stop motion is forced by step chains wheel shaft extra brake devices, step chain no longer drives stepping motion. In addition, elevator industry authorities also require that escalator installation that is to the past production and being still in during use is foregoing Step chains wheel shaft extra brake devices.

But aforementioned patent is all that extra brake devices are appended on escalator in escalator production process, And additional step chains wheel shaft additional brake dress is installed to the existing escalator still during being on active service i.e. during use Put that must to consider that structure is terse, it is low, safe and reliable to install cost additional, to install convenient and escalator down time additional short etc. comprehensive because Element, wherein, brake control mechanism is the key mechanism of the step chains wheel shaft extra brake devices of escalator, is foregoing factors In key factor.Then, performed if brake control mechanism is selected into the inside and outside brake disc braking disclosed in CN106516959A The structure type of mechanism, then it is not only complicated, install additional it is expensive, and install additional loaded down with trivial details, technical side described below Case is caused under this background.

The content of the invention

Task of the present utility model, which is to provide one kind, to be helped significantly to simplify structure and using reduces cost, is advantageous to pair Brake disc is reliably braked and uses and ensure safety and be beneficial to convenient and swift installation and use escalator when shortening installation The brake control mechanism of the step chains wheel shaft extra brake devices of the escalator of down time.

What task of the present utility model was performed by, a kind of step chains wheel shaft extra brake devices of escalator Brake control mechanism, the escalator include a truss, and described step chains wheel shaft extra brake devices include a brake disc, Described brake control mechanism is caught including a brake disc holds relieving mechanism and a brake-shoe action control mechanism, and brake disc is caught to hold and released Laying mechanism includes a Brake shoe abutment and a brake-shoe, and Brake shoe abutment is in the brake disc disk edge corresponding to the brake disc Position be fixed on described truss, the Brake shoe abutment has a brake-shoe chamber, the hoof chamber accent processed of the brake-shoe chamber Towards the brake disc disk edge, brake-shoe is located at brake-shoe intracavitary and corresponding with the brake disc disk edge, in the brake-shoe Short transverse middle part form have a brake-shoe hub setting axle, the hoof hub setting axle processed is rotatably supported on Brake shoe abutment simultaneously And through being connected with the brake-shoe action control mechanism after Brake shoe abutment, the brake-shoe action control mechanism includes electricity Magnet valve support, magnetic valve, pull bar, lever, crank arm and pull bar and crank arm, solenoid valve bracket is fixed with the truss, magnetic valve and electricity The top of magnet valve support is fixed, and pull bar is located at the lower section of magnetic valve, and the upper end of the pull bar and the valve core of the electromagnetic valve of magnetic valve connect, And the lower end of pull bar and one end of lever connect, the lever hinged seat of the middle part of lever and the bottom of solenoid valve bracket is hinged, thick stick The other end of bar is connected with the lower end for pull bar of cranking arm, and the upper end for pull bar of cranking arm is connected with the one end cranked arm, the brake-shoe pivot Axle is put to be connected with the other end cranked arm.

In a specific embodiment of the present utility model, on the brake disc disk edge of the brake disc and around system The circumferencial direction of Moving plate disk edge is formed the brake disc detent bumps for being raised in brake disc disk edge surface with space state, and two is adjacent Region between brake disc detent bumps is configured to brake-shoe brake chamber, is cranked arm when described in the brake-shoe action control mechanism When driving brake-shoe hub setting axle makes the brake-shoe return back in the state being engaged with the brake-shoe brake chamber, brake-shoe is by institute State brake disc and catch and hold, and when cranking arm for brake-shoe action control mechanism drives brake-shoe hub setting axle brake-shoe is returned back in moving back When going out the state of brake-shoe brake chamber, brake-shoe discharges the brake disc.

In another specific embodiment of the present utility model, the upper end of the valve core of the electromagnetic valve of the magnetic valve is stretched over The top of the solenoid valve bracket, and a controlling switch top plate is fixed with the upper end of valve core of the electromagnetic valve, cut with scissors in the lever A pull bar limiting plate is fixed with joint chair and in the position corresponding to the pull bar of cranking arm, is offered on the pull bar limiting plate One is cranked arm pull bar stopper slot, and the middle part for pull bar of cranking arm is cranked arm in pull bar stopper slot corresponding to this.

In another specific embodiment of the present utility model, in the position of the top corresponding to the controlling switch top plate Put and be additionally provided with a controlling switch, the controlling switch is fixed with controlling switch fixed seat, and the controlling switch fixed seat with it is described Truss is fixed, and the switch contact of controlling switch is engaged with controlling switch top plate, when controlling switch top plate is with the electromagnetism When valve core is descending, the switch contact is discharged by controlling switch top plate, controlling switch close, and when controlling switch top plate with When valve core of the electromagnetic valve is up, switch contact is jacked up by controlling switch top plate, controlling switch is opened.

Technical scheme provided by the utility model has technical effect that：Caught due to brake disc and hold relieving mechanism and brake-shoe The structure of action control mechanism is simple, thus can reduce cost；Because brake-shoe can be to the reliable braking of brake disc, thus protected Barrier safety；Hold relieving mechanism and brake-shoe action control mechanism because brake disc is caught and can conveniently and efficiently be fixed on escalator Truss on, thus the set-up time can be shortened while shorten the down time of escalator.

Brief description of the drawings

Fig. 1 catches for the brake disc of brake control of the present utility model and holds relieving mechanism and brake-shoe action control machine The implementation structure chart of structure.

Fig. 2 is the detailed structure view of the brake disc shown in Fig. 1.

Fig. 3 is application examples schematic diagram of the present utility model.

Embodiment

In order to which the technical essence of the utility model and beneficial effect is more clearly understood, applicant is below with reality The mode for applying example elaborates, but the description to embodiment is not the limitation to the utility model, any foundation The made only formal rather than substantial equivalent transformation of the utility model design is regarded as of the present utility model Technical scheme category.

The directionality of the left and right for being possible to occur in the following description etc or the concept of directionality are all with Fig. 3 On the basis of the state of location, thus the special limit to technical scheme provided by the utility model can not be understood as It is fixed.In addition, understanding the utility model for convenience, applicant first describes Fig. 3, and then Fig. 1 and Fig. 2 are described.

Fig. 3 is referred to, a sprocket spindle 1 of the structural system of escalator is shown, is respectively set at the both ends of sprocket spindle 1 It is equipped with a step drive sprocket 11 and a motor-driven drive sprockets 12 and each of the sprocket spindle spindle nose 13 at the both ends of sprocket spindle 1 Hold in sprocket spindle spindle nose fulcrum bearing（Not shown in figure）On, and sprocket spindle spindle nose seat is fixed on the truss 2 of escalator, Foregoing step chains wheel shaft extra brake devices are each provided with one in the position corresponding to the foregoing both ends of sprocket spindle 1.

By the described above of applicant and according to professional general knowledge, the additional system of step chains wheel shaft of the present utility model Dynamic device has two（Or two sets）, to this reference can be made to CN106516959A.Further, while foregoing sprocket wheel is not shown in figure 3 Main-shaft spindle head fulcrum bearing, but understanding that can't be to those skilled in the art produces puzzlement, because equally can be found in foregoing CN106516959A, based on this, applicant is in following description only in two step chains wheel shaft extra brake devices One of them for.

Continue to see Fig. 3, show that step chains wheel shaft adds the friction mechanism 3 and a brake disc of the structural system of device processed 4th, friction mechanism 3 corresponding to the position empty set between aforementioned motor drive sprocket 12 and brake disc 4 in foregoing sprocket spindle Fixed on spindle nose 12 and with the side of motor-driven drive sprockets 12 back to foregoing step drive sprocket 11,4 same empty set of brake disc It is connected on sprocket spindle spindle nose 13 and with friction mechanism 3.The structural system of brake control mechanism provided by the utility model Brake disc catch hold relieving mechanism 5 be arranged in the position of the disk disk edge processed corresponding to brake disc 4 on foregoing truss 2 and with it is same Sample connects for the brake-shoe action control mechanism 6 of the structural system of brake control mechanism of the present utility model, and the brake-shoe moves Make controlling organization 6 to be similarly disposed on truss 2.

When brake-shoe action control mechanism 6 drive brake disc catch hold relieving mechanism 5 and make brake disc catch hold relieving mechanism 5 to During the brake disc disk edge direction motion of brake disc 4, brake disc is caught to hold relieving mechanism 5 and catch brake disc 4 and held and by friction mechanism 3 Aforementioned motor drive sprocket 12 is braked, the foregoing stop motion of sprocket spindle 1, and when brake-shoe action control mechanism 6 drives system Moving plate, which catches to hold relieving mechanism 5 and catch brake disc, holds relieving mechanism 5 towards when being moved away from the disk disk edge direction processed of brake disc 4, Brake disc is caught to hold relieving mechanism 5 and release and catching for brake disc 4 is taken, and friction mechanism 3 and brake disc 4 are with aforementioned motor drive sprocket 12 motions.

Continue to see Fig. 3, foregoing friction mechanism 3 includes a friction plate platen 31, a frictional disk 32, the and of an inner attrition piece 33 One outside friction disc 34, the friction plate platen 31, frictional disk 32, inner attrition piece 33 and outside friction disc 34 drive corresponding to aforementioned motor Position empty set between movable sprocket 12 and foregoing brake disc 4 on foregoing sprocket spindle spindle nose 13, wherein：Inner attrition piece 33 is located at Friction plate platen 31 is back to the side of motor-driven drive sprockets 12（Diagram right side）With frictional disk 32 towards motor-driven drive sprockets 12 Between side（Diagram left side）, that is to say, that inner attrition piece 33 is between friction plate platen 31 and frictional disk 32, outside friction disc 34 are located at frictional disk 32 back to the side of motor-driven drive sprockets 12（Diagram right side）With brake disc 4 towards motor-driven drive sprockets 12 Side（Diagram left side）Between, that is to say, that outside friction disc 34 is between frictional disk 32 and brake disc 4, brake disc 4 and friction Piece platen 31 is connected and coordinated face-to-face with friction plate platen 31, on the brake disc disk edge of brake disc 4 and around braking The circumferencial direction of disk disk edge is formed the brake disc detent bumps 41 for being raised in brake disc disk edge surface, each two-phase with space state Region between adjacent brake disc detent bumps 41 is configured to brake-shoe brake chamber 42, the foregoing braking being arranged on foregoing truss 2 Disk, which is caught, to be held relieving mechanism 5 and is engaged with brake-shoe brake chamber 42.

Catch to hold relieving mechanism 5 and catch brake disc when foregoing brake-shoe action control mechanism 6 drive brake disc and hold machine for releasing When structure 5 is in the state being engaged with foregoing brake-shoe brake chamber 42, foregoing brake disc 4, which is caught, holds, and friction plate platen 31 is also same Sample, which is caught, to be held and motor-driven drive sprockets 12 are also caught and held, and can make motor-driven drive sprockets inside, in the presence of outside friction disc 33,34 12 stop, so that the stop motion of sprocket spindle 11, the ladder sprocket wheel also stop motion being connected with sprocket spindle 11；And work as Brake-shoe action control mechanism 6 drive brake disc catch hold relieving mechanism 5 and make brake disc catch hold relieving mechanism 5 be in exit braking During the state of hoof brake chamber 42, foregoing brake disc 4 is released, and with foregoing opposite situation, ladder sprocket wheel gets enter into motion state.

Continue to see Fig. 3, on foregoing motor-driven drive sprockets 12 and around motor-driven drive sprockets 12 circumferencial direction with Space state offers frictional disk fixing screw hole 121, and the circumferencial direction of frictional disk 32 is surrounded simultaneously on foregoing frictional disk 32 And frictional disk screw 321 is offered with space state in the position corresponding to frictional disk fixing screw hole 121, rubbed corresponding to this The position for wiping valve snail hole 321 is equipped with frictional disk fixing screws 3211, and the frictional disk fixing screws 3211 fix spiral shell with frictional disk Nail 121 is fixed, in aforementioned friction piece platen 31 back to the side of motor-driven drive sprockets 12（Diagram right side）Composition has a friction Piece platen inner attrition piece chamber 311, in frictional disk 32 towards the side of motor-driven drive sprockets 12（Diagram left side）And corresponding to The position of friction plate platen inner attrition piece chamber 311, which is formed, a frictional disk inner attrition piece chamber 322, and foregoing inner attrition piece 33 is towards rubbing The side of pad platen 31（Diagram left side）It is engaged with friction plate platen inner attrition piece chamber 311, and inner attrition piece 33 is towards rubbing Wipe the side of disk 32（Diagram right side）It is engaged with frictional disk inner attrition piece chamber 322, and is driven in frictional disk 32 back to motor The side of sprocket wheel 12（Diagram right side）Composition has a frictional disk external friction piece chamber 323, and foregoing brake disc 4 is towards motor-driven drive sprockets 12 side（Diagram left side）A friction plate platen positioning chamber 43 and a brake disc external friction piece chamber 44, brake disc are respectively constituted External friction piece chamber 44 is located at the inner side of friction plate platen positioning chamber 43 and corresponding with frictional disk external friction piece chamber 323, foregoing outer Friction plate 34 is towards the side of frictional disk 32（Diagram left side）It is engaged with frictional disk external friction piece chamber 323, and outside friction disc 34 Towards the side of brake disc 4（Diagram right side）It is engaged with brake disc external friction piece chamber 44, aforementioned friction piece platen 31 is positioned at Circumferencial direction in aforementioned friction piece platen positioning chamber 43 and around friction plate platen 31 on friction plate platen 31 is spaced apart Provided with friction plate platen screw hole 312, friction plate platen screw 3121 is equipped on friction plate platen screw hole 312, is being made The upper measurement of Moving plate 4 around brake disc 4 circumferencial direction and offer brake disc in the position corresponding to friction plate platen screw hole 312 Connecting screw hole 45, by aforementioned friction piece platen screw 312 through brake disc connecting screw hole 45 and by brake disc 4 and friction plate pressure Disk 31 connects, and the platen screw lock nut 31211 by screwing in the end of friction plate platen screw 3121 locks.

See Fig. 1 and Fig. 3 is combined, foregoing brake disc, which is caught, holds relieving mechanism 5 and include a Brake shoe abutment 51 and one Brake-shoe 52, Brake shoe abutment 51 pass through one group of brake-shoe branch in the position of the brake disc disk edge corresponding to foregoing brake disc 4 Bearing fixing screws 512 are fixed on foregoing truss 2, and the Brake shoe abutment 51 has a brake-shoe chamber 511, the brake-shoe The hoof chamber accent processed of chamber 511 towards foregoing brake disc disk edge, brake-shoe 52 be located in brake-shoe chamber 511 and with foregoing brake-shoe Brake chamber 42 is corresponding, and being formed at the middle part of the short transverse of the brake-shoe 52 has a brake-shoe hub setting axle 521, the hoof hub setting processed Axle 521 is preferably rotatably supported on Brake shoe abutment 51 by the bearing block equipped with bearing and supported through brake-shoe It is connected after seat 51 with foregoing brake-shoe action control mechanism 6.

It is in and foregoing system when brake-shoe action control mechanism 6 drives brake-shoe hub setting axle 521 to return back to brake-shoe 52 During the state that dynamic hoof brake chamber 42 is engaged, foregoing brake disc 4 is caught and held by brake-shoe 52, and works as brake-shoe action control mechanism 6 When driving brake-shoe hub setting axle 521 makes the brake-shoe 52 return back in the state for exiting brake-shoe brake chamber 42, brake-shoe 52 will Foregoing brake disc 4 discharges.

Continue to see Fig. 3, foregoing friction plate platen 31 is combined with each other by symmetrical two friction plate platens semi-ring and formed simultaneously And it is fixedly connected at the position that borders on of two friction plate platen semi-rings by friction plate platen semi-ring connection sheet 313；Foregoing rubs Disk 32, inner attrition piece 33 and outside friction disc 34 is wiped respectively to be made up of two semicircular rings combinations with one another；Foregoing brake disc 4 equally by Symmetrical two brake disc semi-rings, which are combined with each other, to be formed and borders on position by brake disc semi-ring in two brake disc semi-rings Connection sheet 46 is fixedly connected.Semicircular ring described here and semi-ring piece together a full circle shape each other just as C fonts.Consider To convenience during manufacture, a full circle ring-type, when mounted recruitment is made in foregoing inner attrition piece 33 and outside friction disc 34 Tool such as scissors is cut into two semicircular rings, that is, is divided into two.

Preferably, the structural system of foregoing friction mechanism 3 also includes a packing ring 35, and the packing ring 35 is located at aforementioned motor Between drive sprocket 12 and aforementioned friction piece platen 31 and the packing ring 35 is combined with each other by symmetrical two packing ring semi-rings and formed, It is spaced apart on packing ring 35 and in the circumferencial direction for being positioned around packing ring 35 corresponding to aforementioned friction disk fixing screw hole 121 Provided with washer screw hole 351, foregoing frictional disk fixing screws 3211 through behind the washer screw hole 351 with foregoing friction Disk fixing screw hole 121 is fixed.

Continue to see Fig. 3, two foregoing friction plate platen semi-rings border on position respectively form have it is one in mutual embedded connection each other Friction plate platen semi-ring in mutual embedded connection first 314 and also respectively offer one at the position that borders on of two friction plate platen semi-rings and rub Pad platen semi-ring connection sheet screw hole 315, foregoing friction plate platen semi-ring connection sheet 313 are connected by friction plate platen semi-ring Contact pin screw 3131 is in the position corresponding to friction plate platen semi-ring connection sheet screw hole 315 by two friction plate platen semi-rings Border on position to be connected to each other.

Refer to Fig. 2 and combine Fig. 3, respectively composition has one mutually at the position that borders on of two foregoing brake disc semi-rings The brake disc semi-ring in mutual embedded connection first 47 of embedding connection and also respectively offer brake disc at the position that borders on of two brake disc semi-rings Semi-ring connection sheet screw hole 48, foregoing brake disc semi-ring connection sheet 46 is by brake disc semi-ring connection sheet screw 461 corresponding The position that borders on of two brake disc semi-rings is connected to each other in the position of brake disc semi-ring connection sheet screw hole 48.Due to according to figure The brake disc semi-ring in mutual embedded connection first 47 of 2 signals can fully understand that two brake disc semi-rings close in the mutual scarf for bordering on position, Thus applicant repeats no more.Both of the aforesaid friction plate platen semi-ring is bordering on the mutually embedding same example at position.

In the present embodiment, foregoing brake disc semi-ring connection sheet 46 is with occurring in the form of paired, specifically to make Two brake disc semi-rings of Moving plate 46 border on position respectively using a pair of brake disc semi-ring connection sheets 46 and by brake disc semi-ring Connection sheet screw 461 is fixedly connected.

Please emphasis referring to Fig. 1, foregoing brake-shoe action control mechanism 6 includes solenoid valve bracket 61, magnetic valve 62, pull bar 63rd, lever 64, crank arm and pull bar 65 and crank arm 66, solenoid valve bracket 61 is fixed with foregoing truss 2, and magnetic valve 62 passes through its valve seat 622 and to be fixed by means of the top of valve seat screw 6221 and solenoid valve bracket 61, pull bar 63 is located at the lower section of magnetic valve 62, The threaded upper ends of the pull bar 63 are connected with a pull bar upper binding head 631, and the pull bar upper binding head 631 passes through pull bar upper binding head pin Axle 6311 is connected with the valve core of the electromagnetic valve 621 of magnetic valve 62（It is be hinged）, and the lower end screw thread in pull bar 63 connects with a pull bar is connected to Joint 632, the pitman coupling 632 are connected by lower union joint bearing pin 6321 with one end of lever 64（It is be hinged）, lever 64 Middle part is be hinged by its intermediate part bearing pin 641 and the lever hinged seat 611 of the bottom of solenoid valve bracket 61, the other end of lever 64 The pull bar lower union joint 651 of cranking arm for matching somebody with somebody the lower end for being connected on pull bar 65 of cranking arm with screw thread by lever end bearing pin 642 is connected（Hinge Connect）, and the threaded upper ends for pull bar 65 of cranking arm are cranked arm pull bar upper binding head 652 with being connected to one, the pull bar upper binding head 652 of cranking arm is logical Pull bar upper binding head bearing pin 6521 of cranking arm is crossed to be connected with 66 one end of cranking arm, foregoing brake-shoe hub setting axle 521 with crank arm 66 it is another One end connects.

As shown in Figure 1, being formed in the end of foregoing brake-shoe hub setting axle 521 has a hub setting axle square shaft first 5211, in the pivot The axial middle position for putting axle square shaft first 5211 offers a square shaft head screw hole 52111, is opened in foregoing 66 other end of cranking arm To be cranked arm square shaft head mating holes 661 provided with one, the square shaft head mating holes 661 of cranking arm is nested with hub setting axle square shaft first 5211, and It will be cranked arm in the position corresponding to square shaft head screw hole 52111 and 66 be limited to by the fixing screws 662 of cranking arm equipped with pad 6621 On hub setting axle square shaft first 5211.

Continue to see Fig. 1, the upper end of the valve core of the electromagnetic valve 621 of aforementioned electromagnetic valve 62 is stretched over the upper of aforementioned electromagnetic valve support 61 Side, and a controlling switch top plate 6211 is fixed with the upper end of valve core of the electromagnetic valve 621, on aforesaid lever hinged seat 611 simultaneously And a pull bar limiting plate 6111 is being fixed with corresponding to the foregoing position for cranking arm pull bar 65, opened up on the pull bar limiting plate 6111 Crank arm pull bar stopper slot 61111, the middle part for pull bar 65 of cranking arm is cranked arm in pull bar stopper slot 61111 corresponding to this.

Continue to see Fig. 1, a controlling switch is additionally provided with the position of the top corresponding to foregoing controlling switch top plate 6211 67, the controlling switch 67 is fixed with controlling switch fixed seat 672, and the controlling switch fixed seat 672 is fixed with foregoing truss 2, And the switch contact 671 of controlling switch 67 is engaged with controlling switch top plate 6211, when controlling switch top plate 6211 is with foregoing When valve core of the electromagnetic valve 621 is descending, aforementioned switches contact 671 is discharged by controlling switch top plate 6211, controlling switch 67 is closed, and When controlling switch top plate 6211 is up with valve core of the electromagnetic valve 621, switch contact 671 is jacked up by controlling switch top plate 6211, Controlling switch 67 is opened.

When installing the utility model additional to the step chains wheel shaft of escalator：By the empty set of friction plate platen 31 of two semicirculars Connected onto sprocket spindle spindle nose 13, then by applicant is described above by friction plate platen semi-ring connection sheet 313（By means of Friction plate platen semi-ring connection sheet screw 3131）.Simultaneously by the empty set of brake disc 4 of two semicirculars to sprocket spindle spindle nose 13 On, the brake disc 4 of two semicirculars is connected each other by brake disc semi-ring attachment screw 461 by brake disc semi-ring connection sheet 46 Connect.Simultaneously by the empty set of frictional disk 32 of two semi-annular shapes to sprocket spindle spindle nose 13, and two semi-annular shapes in rub Pad 33 is inserted between the right side of friction plate platen 31 and the left side of frictional disk 32 and makes the outside friction disc of two semi-annular shapes 34 insert between the right side of frictional disk 32 and the left side of brake disc 4.Then by frictional disk fixing screws 3211 successively by way of rubbing Wipe and screw in frictional disk fixing screw hole 121 in the state of valve snail nail 321 and washer screw hole 351, while by friction plate Platen screw 3121 is fixed by applicant is described above with brake disc 4.Caught due to brake disc and hold relieving mechanism 5 and brake-shoe The installation of action control mechanism 6 is above being described, therefore is no longer repeated.

Applicant describes the course of work of the present utility model with reference to Fig. 1 and Fig. 3, when escalator breaks down as chain breaks During the situation split or had a power failure suddenly etc, the moving situation of step drive sprocket 11 is predicted by the electronic measurement and control device of escalator Signal, and signal is fed back to the electric controller of escalator, issued instructions to by electric controller in normally open Brake-shoe action control mechanism 6 magnetic valve 62, magnetic valve 62 powers off, and valve core of the electromagnetic valve 621 is to bottom offset i.e. to magnetic valve Stretched outside valve body, drive pull bar 63 descending, drive lever 64 to be moved with its intermediate part bearing pin 641 for the centre of gyration by pull bar 63, Drive pull bar 65 of cranking arm up by lever 64,66 revolutions clockwise of cranking arm are made by pull bar 65 of cranking arm, by 66 drive brake-shoes of cranking arm The corresponding revolution clockwise of hub setting axle 521, drives brake-shoe 52 to be moved to the direction of brake disc 4 from brake-shoe hub setting axle 521（Also may be used Claim to swing）, brake-shoe 52 is in the state that is engaged with the brake-shoe brake chamber 42 on the brake disc disk edge of brake disc 4, now Brake disc 4 is caught by brake-shoe 52 holds and is in braking state.Because brake disc 4 is connected with the friction plate platen 31 of friction mechanism 3, Again because frictional disk 32 is connected with motor-driven drive sprockets 12, thus when brake disc 4 is in braking state, inside, outside friction disc 33rd, can be by 12 effective stop of motor-driven drive sprockets, the stop motion of sprocket spindle 1, the step of escalator under 34 collective effect Stop motion.At the same time, it is descending with aforementioned electromagnetic valve core 621, by with the descending controlling switch of valve core of the electromagnetic valve 621 Top plate 6211 is discharged to the switch contact 671 of controlling switch 67, and controlling switch 67 is closed and by signal to electric controller, is made certainly Other mechanisms of dynamic staircase are all in off-position.The process of holding and aforementioned activities are caught to brake disc 4 because brake-shoe 52 releases Process is on the contrary, thus applicant repeats no more.

In summary, technical scheme provided by the utility model compensate for the shortcoming in prior art, favorably accomplish Invention task, the technique effect referred in the superincumbent technique effect column of applicant is faithfully cashed.

Claims (4)

1. a kind of brake control mechanism of the step chains wheel shaft extra brake devices of escalator, the escalator includes a purlin Frame (2), described step chains wheel shaft extra brake devices include a brake disc (4), it is characterised in that described control for brake machine Structure is caught including a brake disc holds relieving mechanism (5) and a brake-shoe action control mechanism (6), and brake disc, which is caught, holds relieving mechanism (5) Including a Brake shoe abutment (51) and a brake-shoe (52), Brake shoe abutment (51) is corresponding to the brake disc (4) The position of brake disc disk edge is fixed on described truss (2), and the Brake shoe abutment (51) has a brake-shoe chamber (511), Towards the brake disc disk edge, brake-shoe (52) is located in brake-shoe chamber (511) simultaneously the hoof chamber accent processed of the brake-shoe chamber (511) And it is corresponding with the brake disc disk edge, being formed at the middle part of the short transverse of the brake-shoe (52) has a brake-shoe hub setting axle (521), the hoof hub setting axle (521) processed is rotatably supported on Brake shoe abutment (51) and through Brake shoe abutment (51) it is connected afterwards with the brake-shoe action control mechanism (6), the brake-shoe action control mechanism (6) includes solenoid valve bracket (61), magnetic valve (62), pull bar (63), lever (64), pull bar of cranking arm (65) and crank arm (66), solenoid valve bracket (61) with it is described Truss (2) is fixed, and the top of magnetic valve (62) and solenoid valve bracket (61) is fixed, and pull bar (63) is located under magnetic valve (62) Side, the upper end of the pull bar (63) is connected with the valve core of the electromagnetic valve (621) of magnetic valve (62), and the lower end of pull bar (63) and lever (64) one end connection, the lever hinged seat (611) at the middle part of lever (64) and the bottom of solenoid valve bracket (61) is be hinged, lever (64) the other end is connected with the lower end of pull bar of cranking arm (65), and the upper end of pull bar of cranking arm (65) and crank arm (66) one end connect Connect, the brake-shoe hub setting axle (521) is connected with the other end of (66) of cranking arm.

2. the brake control mechanism of the step chains wheel shaft extra brake devices of escalator according to claim 1, it is special Sign is to be formed with space state on the brake disc disk edge of the brake disc (4) and around the circumferencial direction of brake disc disk edge There are a brake disc detent bumps (41) for being raised in brake disc disk edge surface, the region between two adjacent brake disc detent bumps (41) It is configured to brake-shoe brake chamber (42), when described crank arm (66) of the brake-shoe action control mechanism (6) drive brake-shoe pivot Put axle (521) make brake-shoe (52) return back in be engaged with the brake-shoe brake chamber (42) state when, brake-shoe (52) brake disc (4) is caught and held, and when crank arm (66) of brake-shoe action control mechanism (6) drive brake-shoe hub setting axle (521) when the brake-shoe (52) is returned back in the state for exiting brake-shoe brake chamber (42), brake-shoe (52) is by the braking Disk (4) discharges.

3. the brake control mechanism of the step chains wheel shaft extra brake devices of escalator according to claim 1, it is special Sign is that the upper end of the valve core of the electromagnetic valve (621) of the magnetic valve (62) is stretched over the top of the solenoid valve bracket (61), and And a controlling switch top plate (6211) is fixed with the upper end of valve core of the electromagnetic valve (621), on the lever hinged seat (611) simultaneously And a pull bar limiting plate (6111) is fixed with the position corresponding to the pull bar of cranking arm (65), in the pull bar limiting plate (6111) On offer one and crank arm pull bar stopper slot (61111), the middle part of pull bar of cranking arm (65) is corresponding to the pull bar stopper slot of cranking arm (61111) in.

4. the brake control mechanism of the step chains wheel shaft extra brake devices of escalator according to claim 3, it is special Sign is to be additionally provided with a controlling switch (67), the control in the position of the top corresponding to the controlling switch top plate (6211) (67) are switched to fix with controlling switch fixed seat (672), and the controlling switch fixed seat (672) and the truss (2) are fixed, and And the switch contact (671) of controlling switch (67) is engaged with controlling switch top plate (6211), when controlling switch top plate (6211) With the valve core of the electromagnetic valve (621) it is descending when, by controlling switch top plate (6211) to the switch contact (671) discharge, control (67) are switched to close, and when controlling switch top plate (6211) is up with valve core of the electromagnetic valve (621), by controlling switch top plate (6211) switch contact (671) is jacked up, controlling switch (67) is opened.