JP3468936B2 - Handrail belt drive for man conveyor - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to man conveyors such as escalators and moving walkways, and more particularly to a device for driving a handrail belt of these man conveyors.

[0002]

2. Description of the Related Art Man conveyors such as escalators and moving walkways are widely used. In these man conveyors, a handrail belt attached to a balustrade is moved forward at the same speed as a step or step board on which a person rides. It is like this. That is, taking the escalator 1 shown in FIG. 9 as an example, the endless handrail belt 3 attached to the balustrade 2 is driven by the handrail belt drive device 4 arranged below the balustrade 2 to move forward. . On the other hand, a sprocket 8 is attached so as to rotate integrally with a drive wheel 7 that is rotationally driven by a motor 6 installed in the upper machine room 5 and drives a large number of steps (not shown).
Then, the four drive wheels 1 of the handrail belt drive device 4 are driven by the drive chain 9 wound around the sprocket 8.
0 is rotationally driven.

As shown in FIG. 10, these drive wheels 10 are arranged on a frame 11 so as to be aligned in the longitudinal direction of the handrail belt 3, and a bearing fixed to the frame 11 with bolts. It is rotatably supported by 12. A sprocket 13 that rotates integrally with each of the drive wheels 10 is provided on the back surface side of the frame 11. The drive chain 9 wound between the sprocket 13 and the idler 14 drives the drive wheels 10 to rotate.

Further, as shown in FIG. 10, a pressing wheel 15 is provided so as to face the four driving wheels 10, respectively.
Pushes the handrail belt 3 against the drive wheel 10. Two pressing wheels 15 are rotatably supported by pressing wheel holding members 16. Then, the pair of pressing wheel holding members 16
Are supported by supporting members 17 fixed to the frame 11, respectively, are movable in the handrail belt pressing direction, and are urged by the coil spring 18 in the handrail belt pressing direction. The coil spring 18 is supported by a spring bearing 20 fixed to the lower end 11a of the frame 11 by a double nut 19. Then, by loosening the double nut 19 to displace the spring bearing 20 in the axial direction and changing the compression length L of the coil spring 18, the magnitude of the urging force for urging the pressing wheel holding member 16 can be adjusted. It has become.

[0005]

By the way, in the above-mentioned handrail belt driving device 4, since the coil spring 18 is arranged below the pressing wheel holding member 16, the handrail belt 3 is arranged in the longitudinal direction. Vertical direction, that is, FIG.
In the figure, the vertical dimension is large. As a result, when the distance between the left and right balustrades is narrower than the width of the step, the handrail belt drive device 4 interferes with the step or the like.

Further, the handrail belt drive device 4 described above is
The handrail belt 3 is driven by the frictional force generated between the handrail belt 3 and the drive wheel 10. Therefore, unless the pressure wheel 15 presses the handrail belt 3 against the drive wheel 10, that is, the magnitude of the biasing force of the coil spring 18 that biases the pressure wheel holding member 16 is not properly adjusted. Excess or deficiency occurs in the driving force for driving the sliding belt 3. However, since the work of adjusting the magnitude of the urging force of the coil spring 18 is the work of displacing the spring receiver 20 in the axial direction while the worker applies the scale to the coil spring 18, the compression length of the coil spring 18 is reduced. May vary, or the operator may make an incorrect setting. Further, when assembling the escalator 1, and when replacing the handrail belt 3 for maintenance and inspection, the spring bearing 20 must be removed from the frame 11, and the compression length of the coil spring 18 is readjusted each time. As a result, the work is extremely complicated.

Therefore, an object of the present invention is to solve the problems of the prior art, to reduce the dimension of the handrail belt in the direction perpendicular to the longitudinal direction, and to hold the pressing wheel holding member by hand. (EN) Provided is a handrail belt driving device for a man conveyor, which can easily carry out an attaching / detaching work of a coil spring for urging the sliding belt pressing direction and an urging force adjusting work of the coil spring.

[0008]

A handrail belt drive device for a man conveyor according to claim 1 of the present invention is a mancon
Freely supported on the frame attached to the machine frame of the bear
Drive wheel and press the handrail belt against this drive wheel
Pressing wheel and pressing wheel holding that rotatably supports this pressing wheel
A supporting frame having a member and fixed to the frame
To extend in the direction of pressing the handrail belt, and
Protruding columnar guide member that is fitted inside the pressing wheel holding member
In addition, attach the pressing wheel holding member to the driving wheel side.
The biasing coil spring is moved forward in the pressure wheel holding member.
The pressure wheel holding member is wound around the guide member,
A pair of side plates that pivotally support the compression ring and sandwich these
The front ends of the side plates are connected to each other and are arranged in front of and behind the pressing ring.
And a pair of connecting plates provided with the connecting plate.
The guide member is loosely fitted in the guide hole formed in the
Is. That is, attach the pressing wheel to the handrail belt pressing direction.
The urging coil spring guides in the pressing wheel holding member.
As it is wrapped around the member, handrail bell for passenger conveyor
One perpendicular to the longitudinal direction of the handrail belt of the drive unit
The horizontal dimension can be shortened. In addition, the pressing wheel holding member is a guide
Displaced in the direction of pressing the handrail belt, guided by the member
Freedom.

Further , the man computer according to claim 2 of the present invention.
The handrail belt drive device for bears is the mann according to claim 1.
In the conveyor handrail belt drive device, a guide hole formed in at least one of the pair of connecting plates is an elongated hole extending in the longitudinal direction of the handrail belt. As a result, even if the spacing between the guide members varies, the guide hole of the pressing wheel holding member does not interfere with the guide member, and the displacement of the pressing wheel holding member in the belt pressing direction is not hindered.

Further , the man computer according to claim 3 of the present invention.
A bare handrail belt drive device is described in claim 1 or 2.
In the mounted handrail belt driving device for a man conveyor, the guide member includes a fixed spacing piece fixed to the support frame, and a movable spacing piece connected by a bolt on the same axis as the fixed spacing piece. Further, the coil spring is interposed between a flange-shaped spring receiving seat formed on the movable spacing piece and the connecting plate of the pressing wheel holding member. That is, since the coil spring can be attached only by connecting the movable spacing piece to which the coil spring is assembled to the fixed spacing piece with the bolt, the coil spring can be easily attached and detached. Further, since the distance between the connecting plate of the pressing wheel holding member and the spring receiving seat of the movable spacing piece is uniquely determined by the total length of the movable spacing piece, it is not necessary to adjust the compression length of the coil spring.

Further , the man computer according to claim 4 of the present invention.
The handrail belt drive device for bears is a man
In the conveyor handrail belt drive device, an adjusting piece for adjusting the compression length of the coil spring is interposed between the fixed spacing piece and the movable spacing piece . Similarly,
Handrail belt for passenger conveyor according to claim 5 of the present invention
The drive device is a handrail rail for a passenger conveyor according to claim 3.
In the tilt drive device, an adjusting piece for adjusting the compression length of the coil spring is interposed between the spring seat of the movable spacing piece and the coil spring . Accordingly, by replacing these adjusting pieces with those having different sizes, it is possible to easily perform the work of changing the compression length of the coil spring and adjusting the biasing force of the coil spring.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a handrail belt driving device for a man conveyor according to an embodiment of the present invention will be described with reference to FIGS.
Will be described in detail with reference to.

As shown in FIG. 1, the handrail belt driving device 100 of the present embodiment drives an endless handrail belt 3 attached to the balustrade 2 of the escalator 1, and is provided below the balustrade 2. is set up. On the other hand, a sprocket 8 that rotates integrally is attached to a drive wheel 7 that is rotationally driven by a motor 6 installed in the upper machine chamber 5 of the escalator 1. A drive chain 9 is wound between the sprocket 8 and the handrail belt drive device 100.

Handrail belt drive device 100 of this embodiment
As shown in FIGS. 2 and 3, includes a plate-shaped frame 30 attached to the machine frame of the escalator 1. The frame 30 includes a total of four drive wheel assemblies 4
0s are attached in parallel with the longitudinal direction of the handrail belt 3 so as to be aligned on a straight line. Each of these drive wheel assemblies 40 has a bearing 41 that is bolted to the frame 30. A rotary shaft 43 that rotates integrally with a drive wheel 42 that is rotatably supported by the bearing 41 projects to the back side of the frame 30.
Further, a drive chain 9 (not shown) is wound around the sprocket 44 fixed to the tip of the rotary shaft 43,
As a result, the drive wheel 42 is rotationally driven.

Further, as shown in FIG. 2, a total of four pressing wheels 51 arranged so as to face the four driving wheels 42 press the handrail belt 3 against the driving wheels 42. There is. Each two of these pressing wheels 51 are rotatably supported by the pressing wheel holding member 52. The pressing wheel holding member 52 is formed by pressing a steel plate as shown in FIG. 4, and includes a pair of parallel side plates 53 extending so as to sandwich the pressing wheel 51, and these side plates 53. A pair of side plates 53 is provided at both ends in the longitudinal direction.
And a pair of connecting plates 54 connecting the top ends of the.
A circular guide hole 55 having a diameter D is formed in one of the pair of connecting plates 54, and an oval shape having a width D and a length D + X extending in the longitudinal direction of the side plate 53 in the other connecting plate 54. The guide holes 56 of each are formed so as to penetrate therethrough. The value of the distance between the centers of the guide holes 55 and 56 is P. The longitudinal center portion of the side plate 53 is reinforced by a reinforcing shaft 57 extending between the pair of side plates 53. Further, the pressing wheel 51 is inserted between the pair of side plates 53. Then, both ends of the support shaft 58 fitted with the inner ring of the bearing built in the pressing wheel 51 are fixed to the side plates 52 with nuts while being retained in the notches 59 formed in the side plates 53, respectively. A pressure wheel assembly 50 is formed.

As shown in FIG. 2, on the frame 30, a support means 60 for supporting the above-mentioned pressing wheel holding member 52 so as to be displaceable in the handrail belt pressing direction is provided in the longitudinal direction of the handrail belt 3. It is installed with a space between. As shown in FIG. 3, the supporting means 60 includes a bracket 62 (supporting frame) having an L-shaped cross section, which is fixed to the frame 30 with bolts 61, and a base end of which is fixed to the bracket 62. It has a cylindrical guide member 63 (fixed spacing piece) extending in the handrail belt pressing direction and having a female screw threaded on its inner peripheral surface. In addition,
The outer diameter of the guide member 63 is the same as that of the pressing wheel holding member 52 described above.
The inner diameter of the circular guide hole 55 is slightly smaller than that of the circular guide hole 55 so that the guide hole 55 can be loosely fitted therein.

On the other hand, the pressing wheel assembly 50 is biased in the handrail belt pressing direction by the biasing means 70 as shown in FIG. As shown in FIG. 3, the urging means 70 includes a cylindrical spring receiver 72 (movable spacing piece) extending coaxially with the guide member 63, which is connected to the tip of the guide member 63 by a bolt 71, and this spring. The coil spring 74 is mounted on the seat surface 73a of the flange-shaped spring receiving seat 73 provided at the tip of the receiver 72.

In addition, on the lower portion of the back surface side of the frame 30,
As shown in FIG. 2, the tension adjusting means 80 for adjusting the tension of the drive chain 9 is attached. The tension adjusting means 80 includes a bracket 81 fixed to the frame 30.
And an idler 82 supported by the bracket 81. The tension of the drive chain 9 can be adjusted by rotating the screw shaft 84 with the double nut 83 loosened and displacing the idler 82.

As shown in FIG. 2, the drive chain 9 wound around the sprocket 44 of the drive wheel assembly 40 and the idler 82, and the pair of idlers 85 attached to the lower end of the frame 30 is As shown in FIG. 1, it is wound around a sprocket 8 coaxial with the drive wheel 7 of the escalator 1. As a result, the upper machine room 5
When the motor 6 therein is operated to rotate the drive wheel 7 and the sprocket 8, the drive chain 9 circulates to drive the drive wheel 4
2 rotates, and the handrail belt 3 is driven.

Next, the procedure for assembling the pressing wheel assembly 50 to the frame 30 will be described with reference to FIGS. First, when the bracket 62 of the supporting means 60 is fixed to the predetermined position of the frame 30 by using the bolt 61, as shown in FIG.
As shown in FIG. 5, the length dimension of the handrail belt 3 between the pair of guide members 63 in the longitudinal direction is P. Next, the pressing wheel assembly 50 is assembled to the support means 60 so that the guide member 63 is inserted into the guide holes 55 and 56 of the pressing wheel holding member 52, respectively. At this time, one guide hole 55 of the pressing wheel holding member 52 is a circular hole having a diameter D as described above,
Further, since the other guide hole 56 has an oval shape and the dimension of the handrail belt 3 in the longitudinal direction is D + X,
Even if the value of the interval P between the pair of guide members 63 varies, the inner walls of the guide holes 55 and 56 do not interfere with the guide member 63. Further, when the pressing wheel assembly 50 is assembled to the support means 60, even if the pressing wheel holding member 52 tilts, the pressing wheel holding member 52 does not stick to the guide member 63.

Next, when the spring bearing 72 to which the coil spring 74 is assembled is connected to the tip of the guide member 63 by the bolt 71, the coil spring 74 connects the spring bearing seat 73 of the spring bearing 72 and the pressing wheel holding member 52. It is inserted between 54 and 54, and is compressed. As a result, the pressing wheel holding member 52 is biased by the coil spring 74, and the pressing wheel 51 presses the handrail belt 3 against the drive wheel 42. That is, in the handrail belt driving device 100 of the present embodiment, the coil spring 74 can be easily assembled by connecting the spring receiver 72 to the lower end of the guide member 63 using the bolt 71.

On the other hand, as shown in FIGS. 3 and 6, when the pressing wheel 51 presses the handrail belt 3 against the driving wheel 42, the lower surface of the bracket 62 of the supporting means 60 and the pressing wheel holding member 52 are connected. A predetermined gap G is formed between the upper surface of the plate 54 and the upper surface. As a result, the coil spring 74 is compressed to a length L1 obtained by subtracting the value of the gap G and the thickness of the connecting plate 54 from the distance between the lower surface of the bracket 62 and the seat surface 73a of the spring seat 73. . That is, in the handrail belt drive device 100 of the present embodiment, the coil spring 74 can be compressed to a predetermined compression length L1 by connecting the spring receiver 72 to the lower end of the guide member 63 using the bolt 71. Therefore, it is not necessary to adjust the compression length of each coil spring 74 one by one.

Further, in the handrail belt driving device 100 of this embodiment, the urging means 70 has the pressing wheel holding member 5.
It is disposed inside the pair of two side plates 53. This allows
The dimension of the handrail belt driving device 100 in the direction perpendicular to the longitudinal direction of the handrail belt 3 can be significantly reduced as compared with the conventional handrail belt driving device 4 shown in FIG.

On the other hand, the magnitude of the pressing force with which the pressing wheel 51 presses the handrail belt 3 against the drive wheel 42 is such that the axial length of the spring bearing 72 is changed or the spring constant of the coil spring 74 is changed. However, in the handrail belt drive device 100 of the present embodiment, the adjustment is performed as follows. First, when weakening the pressing force of the coil spring 74, as shown in FIG. 7, an annular adjustment piece 75 is attached between the guide member 63 and the spring receiver 72. As a result, the compression length of the coil spring 74 extends from the value L1 in the normal state shown in FIG. 6 to L2, so that the pressing force can be weakened. On the contrary, when the pressing force of the coil spring 74 is to be increased, the annular adjustment piece 76 is attached to the spring seat 73a of the spring receiver 72 as shown in FIG. As a result, the compression length of the coil spring 74 is shortened from L1 to L3, so that the pressing force can be increased.

That is, in the handrail belt driving device 100 of this embodiment, the guide member 63 and the spring bearing 72 are provided.
And the compression pieces of the coil springs 74 are adjusted by attaching and detaching the adjusting pieces to and from the spring seats 73 of the spring receivers 72, respectively. Therefore, the magnitude of the pressing force generated by each of the coil springs 74 is large. Can be easily and reliably adjusted to the same size.

[0026]

As is clear from the above description, in the handrail belt driving device for a passenger conveyor of the present invention, the biasing means for biasing the pressing wheel holding member in the handrail belt pressing direction is the pressing wheel holding member. It is arranged inside the member. As a result, the dimension of the handrail belt drive device in the direction perpendicular to the longitudinal direction of the handrail belt can be significantly reduced as compared with the conventional handrail belt drive device.
Even if the space between the left and right balustrades is narrow with respect to the width of the step, the handrail belt drive device does not interfere with the step or the like. Further, in the handrail belt driving device for a passenger conveyor of the present invention, the coil spring of the urging means is coaxially connected to the tip of the movable spacing piece by using a bolt while being integrated with the movable spacing piece. It is possible to easily carry out the attachment and detachment work. In the assembled state of the coil springs, the coil springs are interposed between the spring seat of the spring receiver and the connecting plate of the pressing wheel holding member and compressed to a predetermined compression length. There is no need to individually adjust the compression length of the. Further, in the handrail belt drive device of the present invention, the compression length of the coil spring can be adjusted by attaching the adjusting pieces between the guide member and the spring bearing or to the spring seat of the spring bearing. The magnitude of the pressing force generated by each of the plurality of coil springs can be easily and reliably adjusted to the same magnitude. Therefore, according to the present invention, it is possible to reduce the dimension of the handrail belt in the direction perpendicular to the longitudinal direction, and to attach and detach the coil spring for urging the pressing wheel holding member in the handrail belt pressing direction, Further, it is possible to provide a handrail belt drive device for a man conveyor, which can easily perform a bias spring force adjustment work.

[Brief description of drawings]

FIG. 1 is a side view of an escalator equipped with a handrail belt driving device for passenger conveyor according to an embodiment of the present invention.

FIG. 2 is a front view of the handrail belt drive device shown in FIG.

3 is a vertical cross-sectional view taken along the line III-III shown in FIG.

FIG. 4 is an overall perspective view of a pressing wheel assembly.

5 is an enlarged front view of a main part of the handrail belt drive device shown in FIG.

6 is a partially cutaway front view showing an enlarged main part of the handrail belt drive device shown in FIG.

FIG. 7 is a partially cutaway front view showing a state in which the spring constant of the pressing spring is reduced.

FIG. 8 is a partially cutaway front view showing a state in which the spring constant of the pressing spring is increased.

FIG. 9 is a side view of an escalator equipped with a conventional handrail belt drive device.

10 is a front view of the handrail belt driving device shown in FIG.

[Explanation of symbols]

1 Escalator 2 Balustrade 3 Handrail Belt 5 Upper Machine Room 6 Drive Motor 7 Drive Wheel 8 Sprocket 9 Drive Chain 30 Frame 40 Drive Wheel Assembly 41 Bearing 42 Drive Wheel 43 Drive Shaft 44 Sprocket 50 Press Wheel Assembly 51 Press Wheel 52 Press Wheel holding member 53 Side plate 54 Connecting plates 55, 56 Guide hole 57 Reinforcing shaft 58 Support shaft 59 Notch 60 Supporting means 61 Bolt 62 Bracket (supporting frame) 63 Guide member (fixed spacing piece) 70 Energizing means 71 Bolt 72 Spring bearing (Movable spacing piece) 73 Flange 74 Coil springs 75 and 76 Adjusting piece 80 Tension adjusting means 100 Handrail belt driving device for passenger conveyor according to one embodiment of the present invention

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B66B 23/04

Claims (5)

(57) [Claims] 1. A frame mounted on a machine frame of a passenger conveyor.
Drive wheel that is rotatably supported by the arm and hand
Pressing wheel that presses the sliding belt and this pressing wheel can rotate freely
And a handrail attached to the support frame fixed to the frame.
The pressing wheel holding member extending in the direction of pressing the belt
A columnar guide member fitted inside is projected,
A coil spring for urging the pressing wheel holding member toward the driving wheel.
To the guide member in the pressing wheel holding member
It is a handrail belt drive device for wound passenger conveyors.
The pressing wheel holding member holds the pressing wheel between the shafts.
The pair of side plates to support and the top ends of these side plates are connected to each other.
And a pair of connecting plates arranged in front of and behind the pressing wheel.
And has a guide hole formed in the connecting plate.
Man combe characterized in that the id member is loosely fitted
A handrail belt drive device. 2. At least one of the pair of connecting plates
The guide hole formed in the connecting plate is the length of the handrail belt.
Claims characterized by being a long hole extending in the hand direction
Item 1. A handrail belt drive device for a passenger conveyor according to Item 1. 3. The guide member is fixed to the support frame.
The fixed spacing piece provided and on the same axis as this fixed spacing piece
A movable spacing piece connected by a bolt,
A flange-shaped spring seat formed on the movable spacing piece;
The coil spring is interposed between the connecting plates of the pressing wheel holding member.
The man according to claim 1 or 2, characterized in that
Handrail belt drive for conveyors. 4. Between the fixed spacing piece and the movable spacing piece.
An adjusting piece for adjusting the compression length of the coil spring
The mancon according to claim 3, characterized in that
Bare handrail belt drive. 5. A spring bearing seat for the movable spacing piece and the coil.
Adjusting with the spring to adjust the compression length of the coil spring.
The knotted piece is interposed, and the knotted piece according to claim 3,
Handrail belt drive device for passenger conveyors.