CN102372223A

CN102372223A - Passenger conveyor

Info

Publication number: CN102372223A
Application number: CN2011100814203A
Authority: CN
Inventors: 岩井俊宪; 石川佳延
Original assignee: Toshiba Elevator Co Ltd
Current assignee: Toshiba Elevator and Building Systems Corp
Priority date: 2010-08-20
Filing date: 2011-03-31
Publication date: 2012-03-14
Anticipated expiration: 2031-03-31
Also published as: CN102372223B; JP2012041151A; JP5618696B2

Abstract

The invention relates to and aims to provide a passenger conveyor, characterized in that a braking claw can be meshed into a tooth part of a chain wheel reliably to stop the rotation of the chain wheel rapidly. The passenger conveyor comprises the baking claw arranged on a truss located below a braking plate and is moved by rotating between a fastening position fastened with the tooth part and a retreating position retreated from the fastening position; a block used for rising the claw part of the braking claw from the retreating position to the fastening position, and in order to prevent the claw part of the braking claw from leaving from the tooth part, supporting the braking claw from a lower part.

Description

Passenger conveyors

The application is with the Japanese patent application 2010-184736 (applying date: 8/20/2010) be the basis, and enjoy the preceence of this application.The application is through comprising the full content of this application with reference to this application.

Technical field

Embodiment of the present invention relates to a kind of passenger conveyors.

Background technology

In passenger conveyors, for example escalator, link step and the conveyor chain of the mobile ring-type that circulates moves through sprocket wheel, this sprocket wheel is rotated through propulsive effort transmission chain.Therefore, in escalator, suppose when this propulsive effort transmits chain and breaks off and complemental brake system is installed.

This complemental brake system does, when detecting propulsive effort and transmit chain and break off, retaining pawl is moved, and the front end of the retaining pawl that has moved meshes with the tooth portion of sprocket wheel.Thus, the rotation of sprocket wheel is prevented from, and the circulation of conveyor chain is moved and stopped.

But in above-mentioned complemental brake system, when the front end of retaining pawl was wanted the tooth portion of engaging-in sprocket wheel, according to difference constantly, the front end of retaining pawl can be flicked by tooth portion sometimes, can not promptly stop the rotation of sprocket wheel.

Summary of the invention

Therefore, the purpose of the problem that the present invention will solve is for providing a kind of passenger conveyors, and retaining pawl is the tooth portion of engaging-in sprocket wheel reliably, and can promptly stop the rotation of sprocket wheel.

The passenger conveyors of embodiment of the present invention is characterised in that to have: sprocket wheel be arranged on the truss, and hanger has the step of binding and the conveyor chain of the mobile ring-type that circulates with rotating freely; The auxiliary braking plate rotates with above-mentioned sprocket wheel, has a plurality of tooth portion around the centre of gration; Retaining pawl is set in place on the above-mentioned truss of above-mentioned auxiliary braking plate below, moves through between clamped position that engages with above-mentioned tooth portion and the retreating position kept out of the way from above-mentioned clamped position, rotating; And block, make the front end of above-mentioned retaining pawl rise to above-mentioned clamped position, for the front end that prevents above-mentioned retaining pawl leaves from above-mentioned tooth portion, from the above-mentioned retaining pawl of supported underneath from above-mentioned retreating position.

According to the passenger conveyors of above-mentioned formation, retaining pawl is the tooth portion of engaging-in sprocket wheel reliably, and can promptly stop the rotation of sprocket wheel.

Description of drawings

Fig. 1 is the overall diagram of the escalator of first embodiment.

Fig. 2 is the birds-eye view of sprocket wheel of the pair of right and left of upper layer side.

Fig. 3 is the lateral plan of the complemental brake system of retreating position.

Fig. 4 is the lateral plan of the complemental brake system of clamped position.

The lateral plan of the complemental brake system when Fig. 5 is the action of second embodiment.

The specific embodiment

Below, based on the passenger conveyors of description of drawings an embodiment of the invention.In addition, in this embodiment, be that example describes with escalator 1 as passenger conveyors.

[first embodiment]

The escalator 1 of first embodiment is described based on Fig. 1～Fig. 4.

The structure of escalator 1 at first, is described based on Fig. 1, Fig. 2.

Escalator 1 has truss 51, and this truss 51 is striden to establish and is installed between the upper strata and lower floor that structure is set that escalator 1 is set.Left and right sides portion above truss 51 is provided with a pair of

railing

52,52, and hanger has handrail 53 respectively around railing 52.

Upper layer side in truss 51 disposes: main rotating shaft 54; Sprocket wheel 55a, the 55b of the pair of right and left that links with this main rotating shaft 54; And actuating device 56 with CD-ROM drive motor, reductor etc.

Lower layer side in truss 51 disposes: main rotating shaft 57; Sprocket wheel 58,58 with the pair of right and left that links with this main rotating shaft 57.At the sprocket wheel 58 of

sprocket wheel

55a, 55b and the lower layer side of upper layer side, between 58, hanger has the

conveyor chain

59,59 of the ring-type of pair of right and left.The both ends that on the

conveyor chain

59,59 of pair of right and left, link the horizontal direction that a plurality of steps 60 are arranged respectively.The

conveyor chain

59,59 of pair of right and left along with

sprocket wheel

55a, 55b, 58,58 rotations and at

sprocket wheel

55a, 55b, 58, circulate mobilely between 58, each step 60 also circulate mobile with the

conveyor chain

59,59 of pair of right and left integratedly.

On each step 60, be separately installed with wheel 61a, 61b.On truss 51, each step 60 circulated mobile situation with pair of right and

left conveyor chain

59,59 under, not shown guide rail was to

wheel

61a, 61b channeling conduct.

As shown in Figure 2, the right ends portion of main rotating shaft 54 is through bearing 62 axle bearings, and bearing 62 is installed on the truss 51.Bolted has slipper 12 in the outside of sprocket wheel 55a.Below this slipper 12, be provided with complemental brake system 10.To specify afterwards about auxiliary braking plate 12 and complemental brake system 10.Bolted has the sprocket wheel 66 that drives usefulness in the outside of sprocket wheel 55b.Substantial middle bolted at main rotating shaft 54 has handrail with sprocket wheel 67.

Sprocket wheel

55a, 55b are set to, and such as stated and lower layer side sprocket wheel 58, hanger has the

conveyor chain

59,59 of pair of right and left between 58, and can rotate integratedly with main rotating shaft 54.Drive to use sprocket wheel 66 to do, and be fixed on that hanger has propulsive effort to transmit chain 68 between the sprocket wheel 66b on the axle drive shaft 66a of actuating device 56, and rotate integratedly with main rotating shaft 54.Handrail uses sprocket wheel 67 to do, and make that hanger has band chain bar 63 between the tape drive mechanism that handrail 53 drives, and rotate with main rotating shaft 54 one.

When the CD-ROM drive motor of actuating device 56 rotates, transmit chain 68 and drive main rotating shaft 54 rotations via propulsive effort with sprocket wheel 66,

sprocket wheel

55a, 55b and handrail rotate with sprocket wheel 67 one.Thus, each step 60 of escalator 1 drives with handrail.

Then, auxiliary braking plate 12 and complemental brake system 10 are described.

At first, around the centre of gration of the peripheral part of slipper 12, equally spaced be provided with the tooth portion 28 of a plurality of ratchet types.

Complemental brake system 10 is to stop with the rotation of the coaxial mounted slipper 12 of sprocket wheel 55a the rotation of main rotating shaft 54 is stopped by the strong hand.

Based on Fig. 3 and Fig. 4 this complemental brake system 10 is described.

Fixed way 14 is installed on truss 51.This fixed way 14 does, is fixed on the truss 51 than the line that hangs down from main rotating shaft 54 (below be called " line hangs down ") 16, the position of among Fig. 3 and Fig. 4, having squinted to the right.The upper surface 18 of this fixed way 14 forms the more approaching line 16 bevelled dip plane more downwards of hanging down.

What the truss 51 that is in fixed way 14 left sides was provided with upper surfaces level bears platform 20.

The upright fixed

wall

22,22 that is provided with pair of right and left on the upper surface 18 of fixed way 14 is in the fixed wall 22 of this pair of right and left, to be provided with first S. A. 24 between 22 be the retaining pawl 26 that the center rotates.This retaining pawl 26 is and the tooth portion 28 ingear parts of slipper 12 that the claw 30 that is in retaining pawl 26 left side front ends meshes with tooth portion 28.

In retaining pawl 26, constitute; With first S. A. 24 is the center; With the position of claw 30 opposition sides, be the leading section (following this position is called " operating member 32 ") on right side; The Heavy Weight of its weight ratio claw 30 under the situation that is not having to support, is that the center is according to lever principle and operating member 32 descends with first S. A. 24.

Being provided with groove 34 in the right part of fixed wall 22, slides along this groove 34 in support portion 36.This support portion 36 parts for moving through not shown electromagnetic valve or motor, when detecting propulsive effort and transmit open circuited situation such as chain 68, electromagnetic valve or motor driven and slided from the left side of groove 34 to the right in support portion 36.This support portion 36 is from supported underneath operating member 32; When move from the left side along groove 34 to the right support portion 36; The support of operating member 32 disappears, and these operating member 32 that kind as shown in Figure 4 fall according to lever principle, and opposite claw 30 rotates (direction of arrow A) to the top.

On first S. A. of giving prominence to the outside of fixed wall 22 24, tabular accessory 38 is installed.Bottom, left side at this accessory 38 is provided with engaging recessed part 40.

On the left end of the upper surface 18 of fixed way 14, upright second fixed wall 42 that is provided with pair of right and left, this second fixed wall 42 is provided with second S. A. 44, is that the center is provided with weight member 46 freely to rotate with second S. A. 44.Counterweight 48 is installed on the left end of this weight member 46, between second S. A. 44 and counterweight 48, on weight member 46, is extruded with foot 50.And, in the right-hand end of weight member 46, promptly be the opposition side of the counterweight 48 at center, be extruded with block 49 with second S. A. 44.Between the foot 50 and second S. A. 44, be extruded with the engaging teat 47 that engages with the engaging recessed part 40 of accessory 38.

Illustrate in greater detail weight member 46.

Weight member 46 does, in the left part of the turning unit 45 of long plate shape counterweight 48 is installed, and has second S. A. 44 in the right part.With this second S. A. 44 block 49 is installed coaxially, block 49 is more outstanding than the right side of turning unit 45.Foot 50 is such as stated to be installed on the turning unit 45 about the centre between counterweight 48 and second S. A. 44, than turning unit 45 to the left, promptly give prominence to the projected direction opposition side of block 49.Between the foot 50 and second S. A. 44, that kind is extruded with engaging teat 47 as stated, and this projected direction is to outstanding with block 49 equidirectionals.The leading section of engaging teat 47 engages with the engaging recessed part 40 of accessory 38.And when this engaging was removed, according to lever principle, the counterweight 48 of weight member 46 fell in rotation to the direction of arrow B.

Below, the operating state of complemental brake system 10 is described based on Fig. 3, Fig. 4.

Describe when being failure to actuate.

As shown in Figure 3, under the situation that escalator 1 regular event, complemental brake system 10 do not move, support portion 36 is positioned at the left side of groove 34, supports the operating member 32 of retaining pawl.Therefore, the claw 30 of retaining pawl 26 is fixing on the retreating position that the tooth portion 28 than slipper 12 descends.On the other hand, the engaging recessed part 40 of the accessory of installing coaxially with first S. A. 24 38, with weight member 46 engage teat 47 engagings, counterweight 48 is fixed under the state that lifts.At this moment, block 49 with the state of the lower end butt of the base portion of the claw 30 of retaining pawl 26 under stop.

Describe during to action.

Then, detect propulsive effort and transmit chain 68 open circuited situation, and support portion 36 to be moved from the left side of groove 34 to the right.So the support of the operating member 32 of retaining pawl 26 disappears, through the weight of operating member 32, the claw 30 of retaining pawl 26 is to top (clockwise direction) rotation in the direction of arrow A.Accessory 38 also rotates with retaining pawl 26 equally in the direction of arrow A, and engaging recessed part 40 is disengaged with the engaging that engages between the teat 47.Therefore, the support of counterweight 48 disappears, and weight member 46 is the center rotation with second S. A. 44, and counterweight 48 (anticlockwise direction) is in the direction of arrow B rotated and fallen.On the other hand, be in weight member 46 the right part block 49 in the base portion of the claw 30 of supported underneath retaining pawl 26 to above rotation.

Then, when platform 20 was born in foot's 50 arrival of weight member 46, falling of counterweight 48 stopped.On the other hand; Even the claw 30 of retaining pawl 26 looks like when meshing with the tooth portion 28 of slipper 12 and is ejected; Owing to support the base portion of claw 30 by block 49; Therefore also can not ejected downwards, and such claw as shown in Figure 4 30 and tooth portion 28 engagements (following this position is called " clamped position "), the rotation of slipper 12 stops.In addition, in Fig. 4, record between the base portion of block on the clamped position 49 and claw 30 and have a little gap, but this gap is the play part, adjusts this gap as required and gets final product.

Describe during to recovery.

When the state of escalator 1 returns just often, the repairman recovers through manually making retaining pawl 26 and weight member 46 rotate to retreating position from clamped position.

According to this embodiment, under the tooth portion 28 ingear situation of the claw of retaining pawl 26 30 and slipper 12, from supported underneath, so claw 30 can not eject by tooth portion 28 base portion of claw 30 by block 49, and slipper 12 is stopped.Then, owing to retaining pawl 26 can not ejected by tooth portion 28, so slipper 12 stops rapidly.Especially; The hand of rotation of retaining pawl 26 (direction of arrow A) is an opposite sense with the hand of rotation (direction of arrow B) of weight member 46; Therefore the counteraction that is rotated of weight member 46 is delivered to retaining pawl 26 through block 49, and block 49 can be supported the base portion of claw 30 more reliably.

And; The upper surface 18 of fixed way 14 tilts; Therefore when the engaging-in tooth of the claw of retaining pawl 26 30 portion 28, even be delivered to retaining pawl 26 from the power of tooth portion 28, power is to horizontal yielding because therefore upper surface 18 tilts; Can directly on fixed way 14, not apply power, and retaining pawl 26 can not break away from from fixed way 14.

[second embodiment]

Then, based on Fig. 5 the escalator 1 of second embodiment is described.

The difference of this embodiment and first embodiment is the structure of complemental brake system 10.

As shown in Figure 5, in this embodiment, from the block 49 of the claw 30 of supported underneath retaining pawl 26, by supporting from bearing the telescopically outstanding supporting rod of platform 20 freedom 70.This supporting rod 70 through screw-shaped spring 72 always by to the top application of force, block 49 always with the base portion of claw 30 to the top application of force.

When being failure to actuate, the operating member 32 of retaining pawl 26 is supported in support portion 36, and claw 30 is revolted the application of force of springs 72 and is fixed on the retreating position that is in the below.

When action, detect propulsive effort and transmit chain 68 open circuited situation, move from the left side of groove 34 to the right support portion 36.So the support of operating member 32 disappears because the weight claw 30 of operating member 32 is to the top rotation, and this claw 30 by the block 49 that moves to the top through the application of force of spring 72 from supported underneath.Therefore, same with first embodiment, claw 30 can not flicked downwards by tooth portion 28.

In addition, in this embodiment, block 49, still also can be pushed through pressing mechanism in addition, the mechanism that for example moves through electromagnetic valve, motor etc. to the top application of force by screw-shaped spring 72.

[variation]

In above-mentioned each embodiment, as passenger conveyors escalator 1 has been described, but has been not limited thereto, also can use complemental brake system 10 at moving sidewalk.

Although clear several embodiments of the present invention, but these embodiments are to propose as an example, do not attempt to limit scope of the present invention.These new embodiments can be implemented with other variety of ways, in the scope that does not break away from inventive concept, can carry out various omissions, displacement and change.These embodiments and distortion thereof are contained in scope of invention and the purport, are contained in the scope that the invention put down in writing with patent request scope is equal to.

Claims

1. passenger conveyors is characterized in that having:

Sprocket wheel is arranged on the truss with rotating freely, and hanger has the step of binding and the conveyor chain of the mobile ring-type that circulates;

The auxiliary braking plate rotates with above-mentioned sprocket wheel, has a plurality of tooth portion around the centre of gration;

Retaining pawl is set in place on the above-mentioned truss of above-mentioned auxiliary braking plate below, moves through between clamped position that engages with above-mentioned tooth portion and the retreating position kept out of the way from above-mentioned clamped position, rotating; And

Block makes the front end of above-mentioned retaining pawl rise to above-mentioned clamped position from above-mentioned retreating position, for the front end that prevents above-mentioned retaining pawl leaves from above-mentioned tooth portion, from the above-mentioned retaining pawl of supported underneath.

2. passenger conveyors as claimed in claim 1 is characterized in that,

Above-mentioned block is arranged on the S. A. one end of the turning unit that is the center rotation;

With the other end of the above-mentioned turning unit of above-mentioned block opposition side, be provided with counterweight clipping above-mentioned S. A.;

Fall and above-mentioned turning unit rotates through above-mentioned counterweight, above-mentioned block at above-mentioned clamped position from the above-mentioned retaining pawl of supported underneath.

3. passenger conveyors as claimed in claim 2 is characterized in that,

The hand of rotation of the above-mentioned rotatable parts when above-mentioned counterweight falls is opposite from the hand of rotation that above-mentioned retreating position rotates to above-mentioned clamped position rising with the front end of above-mentioned retaining pawl.

4. passenger conveyors as claimed in claim 1 is characterized in that,

Above-mentioned block has the pressing mechanism that is used for from the below above-mentioned retaining pawl is pressed into above-mentioned clamped position.

5. passenger conveyors as claimed in claim 1 is characterized in that,

The above-mentioned truss that is in the position that the line that hangs down than the above-mentioned centre of gration from above-mentioned auxiliary braking plate squinted is provided with fixed way;

The said fixing platform has the closer to the above-mentioned line that hangs down gets over bevelled dip plane downwards;

Standing on the fixed part of establishing of said fixing platform, above-mentioned retaining pawl is installed freely to rotate from above-mentioned dip plane.