CN206842948U - The step chains wheel shaft extra brake devices of escalator - Google Patents

Abstract

A kind of step chains wheel shaft extra brake devices of escalator, belong to escalator safety devices technical field.Escalator includes sprocket spindle, the both ends of sprocket spindle respectively set step drive sprocket and motor-driven drive sprockets and sprocket spindle spindle nose is respectively supported in sprocket spindle spindle nose fulcrum bearing, step chains wheel shaft extra brake devices respectively set one in the position corresponding to sprocket spindle both ends, feature：Step chains wheel shaft adds device processed and catches including friction mechanism, brake disc, brake disc and hold relieving mechanism and brake-shoe action control mechanism, friction mechanism empty set is fixed on sprocket spindle spindle nose and with the side of motor-driven drive sprockets back to step drive sprocket, brake disc empty set is connected on sprocket spindle spindle nose and with friction mechanism, brake disc, which is caught, holds relieving mechanism and is located on truss and is connected with brake-shoe action control mechanism, and brake-shoe action control mechanism is located on truss.Improve and install efficiency and shortening down time additional；Simplify structure；Reduce power consumption；Security is good.

Description

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 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 step chains wheel shaft extra brake devices are installed additional to the escalator for not yet entering market in escalator production firm, by the ladder Level sprocket shaft extra brake devices play the emergent stop effect to step chains wheel shaft.Such as when unexpected power-off, by step chains Wheel shaft extra brake devices force step chains wheel shaft stop motion, and step chain no longer drives stepping motion.In addition, elevator industry Authorities also require that escalator that is to the past production and being still in during use installs foregoing step chains wheel shaft additional Extra brake devices.It is caused under this background to be not limited to above mentioned patent.

But aforementioned patent is all that extra brake devices are appended on escalator in escalator production process, And for the existing escalator still during being on active service install additional step chains wheel shaft extra brake devices generally changing or Temporarily unload in the state of step chains wheel shaft and installed additional, i.e., according to the installation structure design in new escalator production process Installed additional, transformation property installation cost is big, escalator down time is long and complicated so as to causing, while also results in money Source wastes.

The content of the invention

Task of the present utility model is that providing one kind contributes in the state of it need not dismantle step chains wheel shaft to be added Fill and use and improve installation efficiency and significantly shorten the down time of escalator, be advantageous to significantly simplify structure and use drop Low installation cost uses the step chains wheel shaft of safing escalator with enhancement is beneficial to the stop effect of brake disc Extra brake devices.

What task of the present utility model was performed by, a kind of step chains wheel shaft extra brake devices of escalator, Described escalator includes a sprocket spindle, and a step drive sprocket is each provided with the both ends of sprocket spindle and a motor drives The sprocket spindle spindle nose at the both ends of movable sprocket and sprocket spindle is respectively supported in sprocket spindle spindle nose fulcrum bearing, and sprocket spindle Spindle nose seat is fixed on the truss of escalator, and described step chains wheel shaft extra brake devices are corresponding to the sprocket spindle The position at both ends is each provided with one, is characterised by：Described step chains wheel shaft, which adds device processed, includes a friction mechanism, a system Moving plate, a brake disc, which are caught, holds relieving mechanism and a brake-shoe action control mechanism, and friction mechanism drives corresponding to the motor Position empty set between sprocket wheel and brake disc is on described sprocket spindle spindle nose and with motor-driven drive sprockets back to the ladder The side of level drive sprocket is fixed, and the same empty set of brake disc is connected on sprocket spindle spindle nose and with friction mechanism, brake disc Catch hold relieving mechanism be arranged in the position of the disk disk edge processed corresponding to brake disc on the truss and with brake-shoe act control Mechanism connection processed, and the brake-shoe action control mechanism is similarly disposed on truss, is made when brake-shoe action control mechanism drives Moving plate catch hold relieving mechanism and make brake disc catch hold relieving mechanism to the brake disc disk edge direction of brake disc move when, brake disc is caught Hold relieving mechanism and catch brake disc and hold and the motor-driven drive sprockets are braked by friction mechanism, the sprocket spindle stops fortune It is dynamic, and when brake-shoe action control mechanism drive brake disc catch hold relieving mechanism and make brake disc catch hold relieving mechanism towards away from Brake disc disk disk edge direction processed motion when, brake disc catch hold relieving mechanism release catching for brake disc is taken, friction mechanism and Brake disc is moved with the motor-driven drive sprockets.

In a specific embodiment of the present utility model, described friction mechanism rubs including a friction plate platen, one Disk, an inner attrition piece and an outside friction disc are wiped, friction plate platen, frictional disk, inner attrition piece and the outside friction disc are corresponding to institute The position empty set between motor-driven drive sprockets and the brake disc is stated on the sprocket spindle spindle nose, wherein：Inner attrition piece position In friction plate platen back to the side of motor-driven drive sprockets and frictional disk towards between the side of motor-driven drive sprockets, outside friction disc Positioned at frictional disk back to the side of motor-driven drive sprockets and brake disc towards between the side of motor-driven drive sprockets, brake disc is with rubbing Pad platen is connected and coordinated face-to-face with friction plate platen, on the brake disc disk edge of brake disc and surrounds brake disc disk The circumferencial direction of edge is formed the brake disc detent bumps for being raised in brake disc disk edge surface, two adjacent brake discs with space state Region between detent bumps is configured to brake-shoe brake chamber, and the brake disc being arranged on the truss, which is caught, holds relieving mechanism It is engaged with brake-shoe brake chamber, holds relieving mechanism when the brake-shoe action control mechanism drives brake disc to catch and make brake disc Catch hold relieving mechanism be in be engaged with the brake-shoe brake chamber state when, the brake disc, which is caught, holds, and works as brake-shoe Action control mechanism drive brake disc catch hold relieving mechanism and make brake disc catch hold relieving mechanism be in exit brake-shoe brake chamber State when, the brake disc is released.

In another specific embodiment of the present utility model, on described motor-driven drive sprockets and motor is surrounded The circumferencial direction of drive sprocket offers frictional disk fixing screw hole with space state, and frictional disk is surrounded on described frictional disk Circumferencial direction and frictional disk screw is offered with space state in the position corresponding to frictional disk fixing screw hole, corresponding Frictional disk fixing screws are equipped with the position of the frictional disk screw, the frictional disk fixing screws are consolidated with frictional disk fixing screw hole Fixed, being formed in the friction plate platen back to the side of motor-driven drive sprockets has a friction plate platen inner attrition piece chamber, is rubbing Disk has a frictional disk towards the side of motor-driven drive sprockets and in the position composition corresponding to friction plate platen inner attrition piece chamber Inner attrition piece chamber, the inner attrition piece are engaged towards the side of friction plate platen with friction plate platen inner attrition piece chamber, and interior Friction plate is engaged towards the side of frictional disk with frictional disk inner attrition piece chamber, and in frictional disk back to motor-driven drive sprockets Side, which is formed, a frictional disk external friction piece chamber, and the brake disc has respectively constituted a friction towards the side of motor-driven drive sprockets Piece platen positioning chamber and a brake disc external friction piece chamber, brake disc external friction piece chamber are located at the inner side of friction plate platen positioning chamber simultaneously And it is corresponding with frictional disk external friction piece chamber, the outside friction disc matches towards the side of frictional disk and frictional disk external friction piece chamber Close, and outside friction disc is engaged towards the side of brake disc with brake disc external friction piece chamber, the friction plate platen is positioned at institute The circumferencial direction in friction plate platen positioning chamber and around friction plate platen on friction plate platen is stated to be spaced apart provided with friction Piece platen screw hole, friction plate platen screw is equipped with friction plate platen screw hole, on the disc brake rotor around brake disc Circumferencial direction and brake disc connecting screw hole is offered in the position corresponding to friction plate platen screw hole, by the friction plate Brake disc is connected by platen screw through brake disc connecting screw hole with friction plate platen, and by screwing in friction plate platen spiral shell Follow closely the platen screw lock nut locking of end.

In another specific embodiment of the present utility model, described brake disc catch hold relieving mechanism include one braking Hoof fulcrum bearing and a brake-shoe, Brake shoe abutment are fixed on described in the position of the brake disc disk edge corresponding to the brake disc Truss on, the Brake shoe abutment has a brake-shoe chamber, and the hoof chamber accent processed of the brake-shoe chamber is towards the brake disc disk Edge, brake-shoe is located at brake-shoe intracavitary and corresponding with the brake-shoe brake chamber, in the short transverse of the brake-shoe Portion, which is formed, a brake-shoe hub setting axle, and the hoof hub setting axle processed is rotatably supported on Brake shoe abutment and through brake-shoe It is connected after fulcrum bearing with the brake-shoe action control mechanism, when brake-shoe action control mechanism drives brake-shoe hub setting axle to make system When dynamic hoof is returned back in the state being engaged with the brake-shoe brake chamber, the brake disc is caught and held by brake-shoe, and when system Dong Ti action controls mechanism drive brake-shoe hub setting axle make brake-shoe return back in exit brake-shoe brake chamber state when, system Dynamic hoof discharges the brake disc.

In another specific embodiment of the present utility model, described friction plate platen is by symmetrical two friction plates Platen semi-ring, which is combined with each other, to be formed and is connected at the position that borders on of two friction plate platen semi-rings by friction plate platen semi-ring Piece is fixedly connected；Described frictional disk, inner attrition piece and outside friction disc is respectively combined with each other by two semicircular rings and formed；Described Brake disc is combined with each other by symmetrical two brake disc semi-rings to be formed and borders on position by making in two brake disc semi-rings Moving plate semi-ring connection sheet is fixedly connected.

In an also specific embodiment of the present utility model, described friction mechanism also includes a packing ring, should Packing ring between the motor-driven drive sprockets and the friction plate platen and the packing ring by symmetrical two packing ring semi-rings that This is combined, and is positioned around on packing ring and corresponding to the frictional disk fixing screw hole between the circumferencial direction of packing ring Separate and be provided with washer screw hole, described frictional disk fixing screws pass through the washer screw hole.

Of the present utility model more and in a specific embodiment, in bordering on for two described friction plate platen semi-rings Position, which is respectively formed, a friction plate platen semi-ring head in mutual embedded connection in mutual embedded connection and in two friction plate platen semi-rings each other The position that borders on also respectively offer a friction plate platen semi-ring connection sheet screw hole, described friction plate platen semi-ring connection sheet is led to Friction plate platen semi-ring connection sheet screw is crossed two are rubbed in the position corresponding to friction plate platen semi-ring connection sheet screw hole The position that borders on of piece platen semi-ring is connected to each other；At the position that borders on of two described brake disc semi-rings, respectively composition has one mutually The brake disc semi-ring head in mutual embedded connection of embedding connection and also respectively offer brake disc half at the position that borders on of two brake disc semi-rings Ring connection sheet screw hole, described brake disc semi-ring connection sheet is by brake disc semi-ring connection sheet screw corresponding to brake disc half The position that borders on of two brake disc semi-rings is connected to each other by the position of ring connection sheet screw hole.

In an of the present utility model and then specific embodiment, the brake-shoe action control mechanism includes magnetic 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 magnetic valve The top of 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 draw The lower end of bar and one end of lever are connected, and the lever hinged seat of the middle part of lever and the bottom of solenoid valve bracket is hinged, lever The other end 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 hub setting axle It is connected with the other end cranked arm.

Of the present utility model and more and in a specific embodiment, the upper end of the valve core of the electromagnetic valve of the magnetic valve is stretched The top of the solenoid valve bracket is opened up, and a controlling switch top plate is fixed with the upper end of valve core of the electromagnetic valve, in the thick stick A pull bar limiting plate is fixed with bar hinged seat and in the position corresponding to the pull bar of cranking arm, is opened on the pull bar limiting plate Cranked arm pull bar stopper slot provided with one, the middle part for pull bar of cranking arm is cranked arm in pull bar stopper slot corresponding to this.

It is of the present utility model and and then a specific embodiment in, in the top corresponding to the controlling switch top plate Position be additionally provided with a controlling switch, the controlling switch is fixed with controlling switch fixed seat, and the controlling switch fixed seat with The truss is fixed, and the switch contact of controlling switch is engaged with controlling switch top plate, when controlling switch top plate is with described When valve core of the electromagnetic valve is descending, the switch contact is discharged by controlling switch top plate, controlling switch is closed, and works as controlling switch top Plate with valve core of the electromagnetic valve it is up when, switch contact is jacked up by controlling switch top plate, controlling switch open.

One of technique effect of technical scheme provided by the utility model, due to the state of step chains wheel shaft can not dismantled Under installed additional, thus be improved install additional efficiency and significantly shorten escalator down time；Two, due to significantly letter Change structure, thus be minimized installation cost；Three, caught due to brake disc and hold relieving mechanism in the braking corresponding to brake disc The position of disk disk edge is arranged on truss and is connected with the brake-shoe action control mechanism being equally directly mounted on truss, because And only need less brake force to play good braking effect to brake disc, and caught due to brake disc and hold relieving mechanism and system Dynamic hoof action control motor install convenient and big to the brake force of brake disc, thus it is minimized power consumption；Four, due to It can be suitable for that the escalator for being currently in service state is installed additional and met to install additional to require, thus can embody preferably Security.

Brief description of the drawings

Fig. 1 is example structure figure of the present utility model.

Fig. 2 is that the brake disc shown in Fig. 1 catches the detailed structure view for holding relieving mechanism and brake-shoe action control mechanism.

Fig. 3 is the detailed structure view of the brake disc shown in Fig. 1 and Fig. 2.

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. 1 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.

Fig. 2 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 Fig. 1 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. 1, show that the step chains wheel shaft as technical essential of the present utility model adds the structure of device processed One friction mechanism 3 of system, a brake disc 4, a brake disc, which are caught, holds the brake-shoe action control mechanism 6 of relieving mechanism 5 and one, friction Mechanism 3 corresponding to the position empty set between aforementioned motor drive sprocket 12 and brake disc 4 in foregoing sprocket spindle spindle nose 13 Above and with the side of motor-driven drive sprockets 12 back to foregoing step drive sprocket 11 fix, 4 same empty set of brake disc is in sprocket wheel It is connected on main-shaft spindle head 13 and with friction mechanism 3, brake disc, which is caught, holds relieving mechanism 5 in the disk disk edge processed corresponding to brake disc 4 Position be arranged on foregoing truss 2 and be connected with brake-shoe action control mechanism 6, and the brake-shoe action control mechanism 6 It is 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. 1, 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. 1, 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 3121 through brake disc connecting screw hole 45 and by brake disc 4 and friction plate Platen 31 connects, and the platen screw lock nut 31211 by screwing in the end of friction plate platen screw 3121 locks.

See Fig. 2 and Fig. 1 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. 1, 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. 1, 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. 3 and combine Fig. 1, 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 3 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. 2, 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 2, 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. 2, 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. 2, 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）, while 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, while 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. 2, 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 (10)

1. a kind of step chains wheel shaft extra brake devices of escalator, described escalator includes a sprocket spindle (1), The both ends of sprocket spindle (1) are each provided with a step drive sprocket (11) and a motor-driven drive sprockets (12) and sprocket spindle (1) the sprocket spindle spindle nose (13) at both ends is respectively supported in sprocket spindle spindle nose fulcrum bearing, and sprocket spindle spindle nose seat is fixed On the truss (2) of escalator, described step chains wheel shaft extra brake devices are corresponding to the sprocket spindle (1) both ends Position be each provided with one, it is characterised in that：Described step chains wheel shaft, which adds device processed, includes a friction mechanism (3), one Brake disc (4), a brake disc, which are caught, holds relieving mechanism (5) and a brake-shoe action control mechanism (6), and friction mechanism (3) is corresponding Position empty set between the motor-driven drive sprockets (12) and brake disc (4) on described sprocket spindle spindle nose (13) and Fixed with motor-driven drive sprockets (12) back to the side of the step drive sprocket (11), the same empty set of brake disc (4) is in sprocket wheel It is connected on main-shaft spindle head (13) and with friction mechanism (3), brake disc, which is caught, holds relieving mechanism (5) corresponding to brake disc (4) The position of disk disk edge processed is arranged on the truss (2) and is connected with brake-shoe action control mechanism (6), and the brake-shoe moves Make controlling organization (6) to be similarly disposed on truss (2), machine for releasing is held when brake-shoe action control mechanism (6) drives brake disc to catch Structure (5) and make brake disc catch hold relieving mechanism (5) to the brake disc disk edge direction of brake disc (4) move when, brake disc is caught to hold and released Laying mechanism (5), which catches brake disc (4), to be held and the motor-driven drive sprockets (12) is braked by friction mechanism (3), the sprocket wheel Main shaft (1) stop motion, and hold relieving mechanism (5) when brake-shoe action control mechanism (6) drives brake disc to catch and make brake disc Catch and hold relieving mechanism (5) towards when being moved away from the disk disk edge direction processed of brake disc (4), brake disc, which is caught, holds relieving mechanism (5) solution Except being taken to catching for brake disc (4), friction mechanism (3) and brake disc (4) are moved with the motor-driven drive sprockets (12).

2. the step chains wheel shaft extra brake devices of escalator according to claim 1, it is characterised in that described rubs Wiping mechanism (3) includes a friction plate platen (31), a frictional disk (32), an inner attrition piece (33) and an outside friction disc (34), should Friction plate platen (31), frictional disk (32), inner attrition piece (33) and outside friction disc (34) are corresponding to the motor-driven drive sprockets (12) the position empty set between the brake disc (4) is on the sprocket spindle spindle nose (13), wherein：Inner attrition piece (33) position In friction plate platen (31) back to the side of motor-driven drive sprockets (12) and frictional disk (32) towards motor-driven drive sprockets (12) Between side, outside friction disc (34) is located at frictional disk (32) back to the side of motor-driven drive sprockets (12) and brake disc (4) direction Between the side of motor-driven drive sprockets (12), brake disc (4) be connected with friction plate platen (31) and with friction plate platen (31) Coordinate face-to-face, on the brake disc disk edge of brake disc (4) and surround the circumferencial direction of brake disc disk edge with space state structure Into there is the brake disc detent bumps (41) that are raised in brake disc disk edge surface, the area between two adjacent brake disc detent bumps (41) Domain is configured to brake-shoe brake chamber (42), and the brake disc being arranged on the truss (2), which is caught, holds relieving mechanism (5) and braking Hoof brake chamber (42) is engaged, and is held relieving mechanism (5) when the brake-shoe action control mechanism (6) drives brake disc to catch and is made system Moving plate catch hold relieving mechanism (5) be in be engaged with the brake-shoe brake chamber (42) state when, the brake disc (4) is caught Hold, and catch to hold relieving mechanism (5) and catch brake disc when brake-shoe action control mechanism (6) drive brake disc and hold relieving mechanism (5) when in the state for exiting brake-shoe brake chamber (42), the brake disc (4) is released.

3. the step chains wheel shaft extra brake devices of escalator according to claim 2, it is characterised in that described Frictional disk is offered with space state consolidated on motor-driven drive sprockets (12) and around the circumferencial direction of motor-driven drive sprockets (12) Determine screw hole (121), the circumferencial direction of frictional disk (32) is surrounded on described frictional disk (32) and corresponding to frictional disk The position of fixing screw hole (121) offers frictional disk screw (321) with space state, corresponding to the frictional disk screw (321) position is equipped with frictional disk fixing screws (3211), the frictional disk fixing screws (3211) and frictional disk fixing screws Hole (121) is fixed, and being formed in the friction plate platen (31) back to the side of motor-driven drive sprockets (12) has a friction plate platen Inner attrition piece chamber (311), in frictional disk (32) towards the side of motor-driven drive sprockets (12) and corresponding to friction plate platen The position of inner attrition piece chamber (311), which is formed, a frictional disk inner attrition piece chamber (322), and the inner attrition piece (33) is towards friction plate The side of platen (31) is engaged with friction plate platen inner attrition piece chamber (311), and inner attrition piece (33) is towards frictional disk (32) Side be engaged with frictional disk inner attrition piece chamber (322), and in frictional disk (32) back to motor-driven drive sprockets (12) one Side, which is formed, a frictional disk external friction piece chamber (323), and the brake disc (4) distinguishes structure towards the side of motor-driven drive sprockets (12) Cheng Youyi friction plate platen positioning chambers (43) and a brake disc external friction piece chamber (44), brake disc external friction piece chamber (44), which is located at, rubs The inner side of pad platen positioning chamber (43) and, outside friction disc (34) direction corresponding with frictional disk external friction piece chamber (323) The side of frictional disk (32) is engaged with frictional disk external friction piece chamber (323), and outside friction disc (34) is towards the one of brake disc (4) Side is engaged with brake disc external friction piece chamber (44), and the friction plate platen (31) is positioned at the friction plate platen positioning chamber (43) circumferencial direction interior and that friction plate platen (31) is surrounded on friction plate platen (31), which is spaced apart, is provided with friction plate platen Screw hole (312), friction plate platen screw (3121) is equipped with friction plate platen screw hole (312), in brake disc (4) Around brake disc (4) circumferencial direction and offer in the position corresponding to friction plate platen screw hole (312) brake disc and connect Connect screw (45), by the friction plate platen screw (3121) through brake disc connecting screw hole (45) and by brake disc (4) with Friction plate platen (31) connects, and by screwing the platen screw lock nut in friction plate platen screw (3121) end (31211) lock.

4. the step chains wheel shaft extra brake devices of escalator according to claim 2, it is characterised in that described system Moving plate, which is caught, to be held relieving mechanism (5) and includes a Brake shoe abutment (51) and a brake-shoe (52), and Brake shoe abutment (51) is right The position of the brake disc disk edge of brake disc described in Ying Yu (4) is fixed on described truss (2), the Brake shoe abutment (51) tool There is a brake-shoe chamber (511), the hoof chamber accent processed of the brake-shoe chamber (511) is towards the brake disc disk edge, brake-shoe (52) position It is in the brake-shoe chamber (511) and corresponding with the brake-shoe brake chamber (42), in the short transverse of the brake-shoe (52) Middle part, which is formed, a brake-shoe hub setting axle (521), and the hoof hub setting axle (521) processed is rotatably supported on Brake shoe abutment (51) And it is being connected afterwards with the brake-shoe action control mechanism (6) through Brake shoe abutment (51), when brake-shoe action control Mechanism (6) drives brake-shoe hub setting axle (521) to return back to brake-shoe (52) and is in and the brake-shoe brake chamber (42) matching During the state of conjunction, the brake disc (4) is caught and held by brake-shoe (52), and when brake-shoe action control mechanism (6) drives brake-shoe When hub setting axle (521) makes the brake-shoe (52) return back in the state for exiting brake-shoe brake chamber (42), brake-shoe (52) is by institute State brake disc (4) release.

5. the step chains wheel shaft extra brake devices of escalator according to claim 3, it is characterised in that described rubs Pad platen (31) is combined with each other by symmetrical two friction plate platens semi-ring and formed and in two friction plate platen semi-rings The position that borders on be fixedly connected by friction plate platen semi-ring connection sheet (313)；Described frictional disk (32), inner attrition piece (33) with And outside friction disc (34) is respectively combined with each other by two semicircular rings and formed；Described brake disc (4) is by symmetrical two brake discs half Ring, which is combined with each other, to be formed and is fixedly connected at the position that borders on of two brake disc semi-rings by brake disc semi-ring connection sheet (46).

6. the step chains wheel shaft extra brake devices of escalator according to claim 3, it is characterised in that described rubs Wipe mechanism (3) and also include a packing ring (35), the packing ring (35) is located at the motor-driven drive sprockets (12) and the friction plate pressure Between disk (31) and the packing ring (35) is combined with each other by symmetrical two packing ring semi-rings and formed, on packing ring (35) and right The circumferencial direction for being positioned around packing ring (35) of frictional disk fixing screw hole (121) described in Ying Yu is spaced apart and is provided with washer screw hole (351), described frictional disk fixing screws (3211) pass through the washer screw hole (351).

7. the step chains wheel shaft extra brake devices of escalator according to claim 5, it is characterised in that described The position that borders on of two friction plate platen semi-rings respectively forms and has a friction plate platen semi-ring head in mutual embedded connection in mutual embedded connection each other (314) and at the position that borders on of two friction plate platen semi-rings a friction plate platen semi-ring connection sheet screw hole is also respectively offered (315), described friction plate platen semi-ring connection sheet (313) is being corresponded to by friction plate platen semi-ring connection sheet screw (3131) The position that borders on of two friction plate platen semi-rings is connected each other in the position of friction plate platen semi-ring connection sheet screw hole (315) Connect；Two described brake disc semi-rings border on position respectively form have one each other brake disc semi-ring in mutual embedded connection it is in mutual embedded connection Head and also respectively offers brake disc semi-ring connection sheet screw hole (48) at (47) at the position that borders on of two brake disc semi-rings, described Brake disc semi-ring connection sheet (46) by brake disc semi-ring connection sheet screw (461) corresponding to brake disc semi-ring connection sheet spiral shell The position that borders on of two brake disc semi-rings is connected to each other by the position of nail (48).

8. the step chains wheel shaft extra brake devices of escalator according to claim 4, it is characterised in that the braking Hoof action control mechanism (6) includes solenoid valve bracket (61), magnetic valve (62), pull bar (63), lever (64), pull bar of cranking arm (65) With crank arm (66), solenoid valve bracket (61) is fixed with the truss (2), and the top of magnetic valve (62) and solenoid valve bracket (61) is consolidated Fixed, pull bar (63) is located at the lower section of magnetic valve (62), the upper end of the pull bar (63) and the valve core of the electromagnetic valve (621) of magnetic valve (62) Connection, and the lower end of pull bar (63) is connected with one end of lever (64), under the middle part of lever (64) and solenoid valve bracket (61) The lever hinged seat (611) in portion is be hinged, and the other end of lever (64) is connected with the lower end of pull bar of cranking arm (65), and pull bar of cranking arm (65) upper end is connected with the one end of (66) of cranking arm, and the brake-shoe hub setting axle (521) is connected with the other end of (66) of cranking arm.

9. the step chains wheel shaft extra brake devices of escalator according to claim 8, it is characterised in that the electromagnetism The upper end of the valve core of the electromagnetic valve (621) of valve (62) is stretched over the top of the solenoid valve bracket (61), and in valve core of the electromagnetic valve (621) upper end is fixed with a controlling switch top plate (6211), on the lever hinged seat (611) and corresponding to described The crank arm position of pull bar (65) is fixed with a pull bar limiting plate (6111), and offering one on the pull bar limiting plate (6111) cranks arm Pull bar stopper slot (61111), the middle part of pull bar of cranking arm (65) is corresponding in the pull bar stopper slot (61111) of cranking arm.

10. the step chains wheel shaft extra brake devices of escalator according to claim 9, it is characterised in that corresponding to The position of the top of the controlling switch top plate (6211) is additionally provided with a controlling switch (67), the controlling switch (67) and control It is fixed to switch fixed seat (672), and the controlling switch fixed seat (672) and the truss (2) are fixed, and controlling switch (67) Switch contact (671) be engaged with controlling switch top plate (6211), when controlling switch top plate (6211) is with the magnetic valve valve When core (621) is descending, the switch 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), by controlling switch top plate (6211) by switch contact (671) jack up, controlling switch (67) is opened.