JPH07237875A - Handrail driving device for man-conveyor - Google Patents

Abstract

PURPOSE:To obtain a handrail driving device, in which a fitting adjustment part to a main body frame is formed at the minimum dimension and installation in a short time is realized and maintenance and repairability is improved. CONSTITUTION:In a handrail driving device for man-conveyor such as an elevator, driving wheels 32 of a handrail belt 4, pushing wheels 37 for making the handrail belt 4 pressure-contact with the driving wheels 32, and a driven sprocket for driving them are fitted to one fitting body 30, and this fitting body 30 is installed in a main body frame 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handrail drive device for driving a handrail belt that moves in synchronism with an endless belt, which is a transporting body for moving passengers, or a step, in a passenger conveyor such as a moving walkway or an escalator.

[0002]

2. Description of the Related Art FIG. 16 is a diagram showing a schematic structure of a general escalator. An escalator body frame 1 is provided from a lower floor to an upper floor, and a step 2 is provided along the body frame 1. Is designed to move. A balustrade 3 is provided on both sides of the moving step 2, and a handrail belt 4 is provided along the upper surface of the balustrade 3.

By the way, in a passenger conveyor such as an escalator or a moving walkway, it is obliged that the steps 2 and the handrail belt 4 move in synchronization. Then, the steps 2 and the handrail belt 4 are driven in the machine room 5 of the main body frame 1 by the drive wheels 7 driven by the drive motor 6.

That is, as shown in FIG. 17, the drive wheel 7 has a drive sprocket 7a which is rotationally driven by a drive motor 6 through a chain 8, a handrail sprocket 7b which transmits a drive force to a handrail drive device, and a step drive. Has a step sprocket 7c for a handrail sprocket 7b
By the rotation of the step sprocket 7c, the handrail drive device is actuated via the chain wound around each sprocket, and the step is driven and moved.

FIG. 18 is a diagram showing a schematic structure of a handrail drive device for driving the handrail by the handrail sprocket 7b. The handrail belt drive wheel mounting body 10 attached to the main body frame 1 has four handrails. The handrail belt drive wheels 11 are mounted, and the handrail belts 4 are sandwiched between the handrail belt drive wheels 11 and the handrail belts 4 are sandwiched between the handrail belt drive wheels 11.
A pressing wheel 12 that presses against is provided.

Two pressing wheels 12 are mounted on a support frame 13, two support frames 13 are engaged between guides 14 so as to be movable in the vertical direction, and the lower part of the support frame 13 is attached to a main frame in advance. A frame 15 is provided, and a set screw 16 is attached to the frame 15. A compression spring 17 having a desired spring constant is interposed between the set screw 16 and the support frame 13, and the support frame is supported by the compression spring 17. The pressing wheel 12 is urged toward the handrail drive wheel 11 side via 13.

By the way, the length of the drive wheel shaft 7 is determined by the width W of the body frame 1, and in order to facilitate mounting and dismounting of the bearings 18, 18 on the left and right of the drive wheel shaft 7, FIG.
As shown in, the handrail sprocket 7b is disposed closer to the center than the drive sprocket 7a. Therefore, the input position of each sprocket 11a of the handrail belt drive wheel 11 in the handrail drive unit and the handrail sprocket 7b have a positional relationship that is laterally offset by X, so that between the handrail sprocket 7b and the handrail drive unit. An idler device 19 is provided in the middle.

That is, the idler device 19 has an input side sprocket 19a and an output side sprocket 19b which are coaxially formed integrally with each other and are laterally separated from each other by X, and these are attached rotatably through a bearing. A first handrail chain 20 is wound between the sprocket 19a and the handrail sprocket 7b. On the other hand, a second handrail chain 21 is wound around the output side sprocket 19b, and the second handrail chain 21 includes the sprocket 11a of the handrail belt drive wheel 11 and the idler sprockets 22, 23, 24 in the handrail drive unit. It is wound via.

On the other hand, in FIG. 18, the first handrail chain 20 and the second handrail chain 21 are worn and stretched in proportion to the operation. Therefore, the first handrail chain 20
Then, the tension device 1 provided in the intermediate idler device 19
9c for input side and output side sprockets 19a, 19
Absorb the chain elongation by pulling b to the left,
The tension of the second handrail chain 21 is absorbed by the tensioning device 25. Therefore, when adjusting the extension of the first handrail chain 20, it is necessary to adjust the tensioning device 25 even when the second handrail chain 21 does not extend. It is necessary to set a large amount.

[0010]

In the structure of the handrail drive device, the intermediate idler device 19, the handrail drive wheel mount 10, the support frame 15, the tensioning device 25 and the idler sprocket 24 are individually arranged on the main frame 1. It can be installed while taking it out.

However, in the passenger conveyor, the main frame 1
Is a normal steel material that has been welded and the like, and since no mechanical cutting or the like has been performed at all, it is difficult to install each of the above parts with high precision, and operation due to misalignment is not possible in the handrail chains 20, 21. There is a problem that causes the vibration of the liner and the liner adjustment is unavoidable.

Generally, in a man conveyor, a piano wire is stretched at the center of the main body frame and all parts are centered on the basis of the piano wire. Therefore, if the number of places to be attached to the main body frame 1 is increased, the number of places to be attached and adjusted to the main body frame will be increased, such that installation work such as horizontal, right angle, and tilt angle is required to a desired dimension from the piano wire reference.
In addition, there are many variations in the adjustment and attachment that accompany it, and there is a problem that vibration and scattering of oil supply accompanying it occur, and the life of parts may be significantly adversely affected. .

Further, recently, due to the progress of construction work, the period from the start of construction to the completion has been shortened, and also in this respect, the construction period of the man conveyor has been shortened.
It is becoming difficult to deal with the problem by the conventional method.

In view of the above points, the present invention attaches the components of the handrail drive unit to the handrail drive unit, eliminates unnecessary parts, minimizes the adjustment of the main frame attachment, and minimizes the handrail drive unit. The purpose of the present invention is to provide a handrail drive device that is installed in a factory, limits liner adjustments, etc., realizes short-term installation, and improves maintenance and repairability.

[0015]

According to a first aspect of the present invention, in a handrail drive device for a passenger conveyor, at least a handrail belt drive wheel is pressed against at least one handrail belt drive wheel to a mounting body to which a drive wheel of the handrail belt is attached. A wheel and a driven sprocket for driving them are attached, and an attachment body thereof is attached to a main body frame of the passenger conveyor.

According to a second aspect of the invention, the inner diameter D _{1 of the} mounting hole formed in the mounting body for fitting and mounting the bearing portion of the handrail belt drive wheel is the outer diameter of the sprocket for the handrail belt drive wheel. It is characterized in that it is formed larger than D ₂ .

Further, according to another invention of the present application, the handrail belt drive wheel and the pressing wheel are disposed on the front side of the mounting body, and the handrail belt drive wheel sprocket is disposed on the back side of the mounting body. Characterize.

[0018]

[Function] The handrail drive unit is assembled in advance in an environment-friendly place such as a factory, and on the other hand, the mounting portion of the handrail drive unit on the man-conveyor side is completed in the required centering work.
Only by attaching the handrail drive device unit integrally configured to this, other centering work can be extremely reduced.

Further, a stretching device, a deflector idler device or the like can be incorporated in the mounting member, and if necessary, they can be partially or entirely attached / detached except for the mounting body. In addition, the time required for installation at the installation site can be reduced, and maintainability can be improved.

[0020]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a side view showing the configuration of an escalator to which the present invention is applied.
A truss is constructed by welding using vertical and diagonal members. The drive machine 6 and the drive wheels 7 are arranged in the upper machine room 5, and the driven wheels are provided in the lower part, and a step guide rail (not shown) is provided between them. End) are arranged endlessly. An endless transporting body is provided on this via a step chain and rollers.

On the other hand, the handrail belt 4 needs to be synchronized with the steps 2, and is rotated by the drive-side handrail sprocket 7b which is coaxially integrated with the drive wheel via the handrail belt drive wheel.

FIG. 2 is a front view of the handrail drive unit, in which a mounting body 30 made of a plate material such as a steel plate or an aluminum alloy plate, a casting material or a synthetic resin plate is provided on the left and right sides. It is attached to the body frame 1 by means of.

The attachment 30 is provided with four handrail belt drive wheels 32 on the upper side. That is, the mounting body 30 includes four bearings 3 for the handrail belt drive wheels 32.
3 are attached by screws 34, respectively,
The shafts 35 are mounted via bearings, and the handrail drive wheels 32 are attached to the front end surfaces of the shafts 35 by screws 36, respectively.

On the other hand, pressing wheels 37 are arranged at positions facing the outer periphery of each handrail belt drive wheel 32, and two pressing wheels are separated from each other by a spacing piece 38, and front and rear support frames are provided. It is clamped between 39 and its support frame 3
It is pivotally supported by the notch 40 provided in 9 through a bearing. A flange portion 41 protruding in the left-right direction is provided at both left and right ends of the support frame 39, and an L-shaped support attached to the mounting body 30 is provided in a hole 42 formed in the flange portion 41. A guide shaft 44 protruding downward from the frame 43 is inserted therethrough, and a screw 4 is screwed to the lower end of the guide shaft 44.
5 and the flange 41, a pressing rod 46 is interposed,
The pressing spring 46 urges the pressing wheel 37 toward the handrail belt driving wheel 32 side via the support frame 39.

Here, the L-shaped support frame 43 is fixed so as to fit into the recess 47 provided on the surface of the mounting body 30 as shown in FIG. 3, so that the dimensional accuracy of the mounting device can be accurately maintained. I am doing it.

FIG. 4 is a front view of the mounting body 30. Four mounting holes 48 into which the bearing 33 of the handrail belt drive wheel 32 is fitted and mounted are formed in the upper portion of the mounting body 30 and the central height is increased. A concave portion 47 for fitting the L-shaped support frame 43 is provided at this position.

FIG. 5 is a partial sectional arrow view taken along the line BB of FIG. 2, showing four mounting holes 48 formed in the mounting body 30.
A fitting portion of a bearing 33 for each handrail belt drive wheel 32 is inserted into and engaged with each of these, and is fixed by a screw 34 (FIG. 2) from the front side, and a shaft 35 is pivotally supported by the bearing 33. The handrail belt drive wheel 32 is mounted on the front end surface of the shaft 35 as described above. The shaft 35 is stepped as shown in FIG. 5, is inserted into the bearing 33 from the front side, and is projected to the back side of the mounting body 30, and the sprocket 50 together with the spacer 49 is attached to the protruding portion. After turning the end part with the detent 51a and the detent nut 51b, the detent 5
1a is locked.

In the above example, the bearing 33 is fixed to the mounting body 30 first, but the bearing 33 is mounted first.
It is also possible to mount the sprocket 50 and the like on the bearing 33 in advance according to the above-described procedure without mounting it on the mounting body 30, and then mount four parts on the mounting body 30. In this case, the bearing 33
As a condition for partially assembling, the relationship between the inner diameter D ₁ of the mounting hole 48 of the mounting body 30 and the outer diameter D ₂ of the tooth tip of the sprocket 50 is D ₁ > D ₂ .

Further, in order to set the position of the handrail drive sprocket 50 to a predetermined value, the spacer 49 is replaced with an appropriate size so that the distance between the mounting surface of the mounting body 30 and the center of the tooth thickness of the handrail drive sprocket 50 is increased. Or the center distance between the handrail belt drive wheel 32 and the sprocket 50 can be selectively set to a predetermined value.

On the other hand, as shown in FIG. 4, mounting holes 52 for mounting the deflector idler are formed on both sides of the lower portion of the mounting body 30, and as shown in FIGS. 2, 3 and 6, the mounting body is mounted. Three
The mounting shafts 53a, 54a of the idlers 53, 54 are inserted and mounted in the mounting holes 52 from the back surface side of 0, respectively. The baffle idlers 53 and 54 are made of sprockets, and the center of the tooth thickness is set at a position concentric with the center of the sprocket 50 of the handrail belt drive wheel 32.

That is, FIG. 6 is a sectional view taken along the line GG in FIG. 2, in which a bearing 55 is inserted into the center of the deflector idler 54, and a mounting shaft 54a is inserted therethrough, and one end of the mounting shaft 54a is inserted. The stepped portion 54a1 provided on the above is brought into contact with the bearing 55, and the spacer 56 attached to the other end of the attachment shaft 54a is brought into contact with the attachment body 30. The tip portion of the mounting shaft 54a has a mounting hole 5 for the mounting body 30.
2 is firmly fitted and inserted into the mounting body 30, and a fixing screw 58 is attached and tightened to a portion protruding from the surface of the mounting body 30 via a washer 57. Further, the sprocket center distance between the mounting body 30 and the deflector idler 54 is adjusted by changing the length of the spacer 56 so as to correspond to a case where the handrail sprocket positions provided on the main body side of the escalator are slightly different. The other deflecting idler 53 shown in FIG. 2 has the same structure as that shown in FIG.

Thus, the drive side handrail sprocket 7b which is rotationally driven by the drive machine 6 provided in the machine room 5, each sprocket 50 for the handrail belt drive wheels, and both the deflector idlers 53 and 54 have the handrail chain 60. The sprocket 50 is rotated by the rotation of the drive side handrail sprocket 7b, whereby the handrail belt drive wheels 32 are rotated and the handrail 4 is rotated.

By the way, when the sprocket 50 provided on the back side of the handrail belt drive wheel 32 is driven by the handrail chain 60, an extension device 61 having an idler is provided to deflect the sprocket 50 in the middle to increase the winding angle. There is.

That is, as shown in FIG.
In the lower central portion of the, the notch 62 for attaching the stretch device 61 for adjusting the tension of the handrail chain 60, the space between the mounting holes 63, and the extension amount of the handrail chain 60 of 1.5% to 2
A supporting protrusion 64 is provided that forms a corrected extension stroke in consideration of%. Incidentally, reference numeral 65 in the drawing is a work opening for facilitating the work in consideration of the detachability of the handrail chain.

FIG. 7 is a vertical cross-sectional view showing the structure of the above-described stretching device 61. The support body 66 of the stretching device 61 is inserted into the mounting hole 66a on the front side of the notch 62 of the mounting body 30. It is attached by screws 67 (FIG. 2). As shown in FIG. 8, the support body 66 has a guide groove 68 extending in the up-down direction formed on the attachment surface to the attachment body 30,
A guide element 70 (FIG. 9) having a tension sprocket mounting shaft 69 mounted therein is slidably engaged with the guide groove 68.

The guide element 70 is provided with a screw rod 71 projecting downward. The lower end of the screw rod 71 is inserted into a through hole 42 provided in the bottom portion of the support 66 to project therefrom. An adjusting nut 73 is screwed on the end portion.

On the other hand, as shown in FIG. 7, a stepped hole 74a is formed in the tension sprocket 74, and the stepped hole 74a is formed.
The bearing 75 is fitted inside, and the retaining plate 76 is attached to the end.
The bearing 75 is fixed by abutting the contact plate and attaching the pressing plate 76 to the tension sprocket 74 with the screw 77. Then, the tension sprocket mounting shaft 69 is inserted through the bearing 75, and the mounting shaft 69 is inserted through a cylindrical spacer 78 into the cylindrical hole 70 of the guide element 70.
It is inserted into a.

In the vicinity of the tip of the mounting shaft 69, as shown in FIG.
As shown in FIG. 2, chamfered portions 69a that are parallel and flat to each other are formed on both surfaces facing each other in the radial direction.
Is inserted into and engaged with a vertical elongated hole 68a formed in the guide groove 68 of the support body 66, and can only move along the elongated hole 68a. A fixing screw 80 is screwed through a washer 79 to the tip of the mounting shaft 69 protruding from the elongated hole 68a to the front side of the support 66. Then, loosen the fixing screw 80 to adjust the adjusting nut 7
By rotating 3, the guide 70 can be moved up and down via the screw rod 71.

Therefore, the tension sprocket 74 has
The handrail chain 60 is pulled down between the two sprockets 50 for the handrail belt driving wheels 32 in the central portion, and the handrail chain 60 is wound. Therefore, the tension sprocket 74 is vertically adjusted by the vertical adjustment of the guide element 70, so that the tension of the handrail chain 60 can be adjusted, that is, stretched.

Thus, the handrail belt drive wheel 32 and the pressing wheel 37 are arranged on the front surface side of the mounting body 30, and the sprocket 50 for driving the handrail belt drive wheel 32, the deflecting idlers 53, 54, and the rear surface side thereof. Tension sprockets 74 and handrail chains 6 wrapped around them.
Since 0 is provided, even if the refueling supplied to the chain or the like is scattered during operation, the attachment 30 prevents the refueling from adhering to the handrail belt and contaminates the handrail belt. Is prevented.

FIG. 11 is a view showing the overall structure of the handrail drive device section. One endless handrail chain 60 wound around the drive-side handrail sprocket 7b includes a deflector sprocket 53 and a handrail sprocket 32. After that, the U-turn is made with the tension sprocket 74, and then the handrail sprocket 32
Then, it goes through the deflecting sprocket 54 to the drive-side handrail sprocket 7b, or moves in the opposite direction.

By the way, when the distance between the sprockets supporting the handrail chain 60 is large, the slide plate devices 81, 82 and 83 for steadying are arranged so as to be in constant contact with the handrail chain 60 as necessary. There is.

As shown in FIG. 11, since the drive-side handrail sprocket 7b and the deflecting idlers 53 and 54 are always in fixed positions, the handrail chain 60 reciprocating between the drive-side handrail sprocket 7b and the deflecting idlers 53 and 54 is provided. The locus becomes a straight line. Sliding plate devices 81, 82, and 83 are respectively arranged on the lower side of the forward side and the lower side of the handrail chain 60 so as to prevent the handrail chain 60 from hanging downward, and a driving force is further applied. In this case, the handrail chain 60 is always lifted from the lower side so that vibration does not occur.

That is, the support frame 8 fixed to the body frame 1
Adjustment members 86 that can be adjusted up and down with respect to 4, 85
Are provided in two places, a member 87 arranged in parallel along the handrail chain 60 is passed over the adjusting member 86, and a sliding plate piece 88 that comes into contact with the handrail chain 60 is provided above the member 87. . The sliding plate piece 88 is made of nylon or polypropylene, plastic such as urethane resin, and synthetic rubber such as nitrile rubber by vulcanization, bonding, screwing, or the like in accordance with the width of the roller type handrail chain.

For the centering work of the escalator, as shown in FIG. 12, a piano wire 89 serving as a center line is provided at the center of the main body frame 1, and reference columns are provided at the upper and lower ends of the main body frame 1 to provide the main body frame 1. It is stretched along the body frame so that it is about 1 to 1.5 meters above the upper surface of the. Then, the piano wire 89 is used as a reference for centering while swinging down and measuring the mounting plate of each part using a measuring device such as a scale.

The handrail drive unit, which forms a power pair with the drive wheel 7 preliminarily centered and attached, has its mounting seat 90 preliminarily provided on the piano wire 89 at desired centering dimensions X ₁ and X ₂ . .

12 to 15, when the mounting body 30 of the handrail drive unit is fixed to the mounting seat 90, the center of the tooth thickness of the drive side handrail sprocket 7b and the sprocket 32 on the handrail belt drive wheel side is the piano wire. It is necessary to have a positional relationship in which 89 can be centered in parallel.

Therefore, X ₁₀ = X ₁ + X ₁₁ , X ₂₀ =
When the relationship of X ₂ + Z ₁₂ is set, and therefore the piano wire 89 is the center of the width X ₀ of the body frame 1, the relationship of X ₁₀ = X ₂₀ is normally set, and the relationship of X ₁ = X ₂ is established. It

Therefore, the intervals X ₁₁ and X ₁₂ between the mounting body 30 and the sprocket 50 in the handrail drive unit are also equal,
This is precisely processed and assembled at the factory and the dimensions are accurately maintained.

Therefore, the mounting seat 9 is attached to the body frame 1 at the site.
Installation work at 0 to 2 points of support between dimensions P ₁ is fitted with 91 plumb bob to piano wire 89 as shown in FIG. 15, centering dimension between the mounting surface of the mounting seat 90 from the swing down line X
_The adjustment liner 92 is appropriately inserted between the main frame piece 1a and the mounting seat 90 so as to be ₁ , X ₂ , and the dimension is adjusted parallel to the reference of the piano wire 89, and the screw 94 is inserted into the mounting hole 93 provided in advance. After fixing it with, fix it with a knock pin or welding. Then, the mounting body 30 of the handrail drive unit is mounted on the mounting seat 90.

On the other hand, the handrail belt drive wheel 32 and the sprocket 50, etc., which are axially mounted on the bearing 33, are accurately assembled at the factory and fitted into the four mounting holes 48 of the mounting body 30 from the sprocket 50 side to mount the bearing 33. The surface of the mounting body 30 is fixed by the screw 34.

The conditions for mounting the handrail belt drive wheel are as follows. The sprocket 5 with the hole diameter D ₁ of the mounting hole 48 located on the rear side.
Although it has been described that it is necessary to have a diameter larger than the outer diameter D _{2 of} 0, in the case of the relationship of D ₁ <D ₂ , the handrail belt drive wheel assembly is such that the shaft 35 is projected to the rear side of the mounting body 30. After installing the sprocket 50. Further, the handrail belt drive wheel 32 can be detachably attached to the front end of the shaft 35 with a screw 36.

The thrust load applied to the shaft 35 is supported by bearings, but the parts to be shaft-mounted are fixed by the lock nut 5.
After tightening 2, tighten the stoppers 51. As a result, the distance between the sprocket 50 and the handrail belt drive wheels 32 is maintained at a predetermined value.

On the other hand, the support frame 39 to which the pressing wheels 37 are attached
Is an L-shaped support frame 43 mounted at a predetermined position of the mounting body 30.
The flange portion 41 is fitted to the guide shaft 44 projecting downward from the guide shaft 44, and the pressing spring 46 is attached to the guide shaft 44.
The pressing force can be set within an allowable range, and contact friction with the handrail belt 4 can be generated.

The stretching device is usually a handrail chain 60.
The tension of the handrail chain can be adjusted by moving the tension sprocket 74 up and down during new maintenance, when elongation occurs and loosens during operation, and during maintenance such as repair or repair of the handrail chain 60. Adjust to.

Generally, the extension limit of the handrail chain is about 1.5% of the total length L of the handrail chain, and 2% is considered to be the adjustment allowance even when considering the production of the machine and the initial adjustment allowance. Suffice it to say that the elongation amount L × 1.5 in the present invention.
% And the initial manufacturing error and splicing adjustment allowance L × 1.5% are expected, and all handrail chains are adjusted by the stretcher.

Further, the deflecting idlers 53 and 54 can also be attached and fixed from the rear surface side of the mounting body 30 and can be removed in the reverse order when detaching.

As described above, each of the handrail belt drive wheel, the pressing wheel, the stretcher, and the deflector idler is attached to one attachment body 30. Moreover, the mounting body 30 has appropriate rigidity so that it does not bend or vibrate due to the input of the handrail chain 60 and the reaction force of the handrail belt. For example, a member having high strength such as a steel plate can be adopted, which is economical. It will be

Therefore, with respect to the mutual dimensional relationship after the respective devices such as the handrail belt driving wheels are mounted, the required assembling accuracy can be obtained by simply mounting the centers of the respective sprockets. In addition, the action of pressing the handrail belt can be equalized and the ease of extension can be reliably obtained with a compact device.In addition, the assembly is completed in a factory with good workability, and the unit of the handrail drive unit is used for installation work. The assembly work can be almost completed simply by assembling it in the body frame.

Each device mounted on the mounting body 30 is composed of a handrail belt drive wheel device and a pressing wheel device, a device to which a stretching device is further added, or a device to which a deflector idler device is added. It is also possible to unitize with the combination of.

[0061]

As described above, according to the present invention, the central parts and devices such as the handrail belt drive wheels are mounted on one mounting body which can be attached to and detached from the body frame. It is possible to manufacture parts with high precision and assemble them in a good factory environment, to minimize installation work on site and improve efficiency and reliability. Therefore, as in the past, the central parts and devices are individually centered and attached to the main body frame at the building site, etc., and it is not possible to perform high-precision centering even though it takes a lot of work time, and vibration, handrail chains and sprockets are not possible. It is possible to solve the problem that the life of the battery is significantly impaired.

When the stretcher of the handrail chain is interposed between the handrail belt drive wheels, the handrail chain is stretched, and the adjustment allowance at the time of assembling at the initial stage and the like is all in this portion in a short time and reliably. Can be adjusted to. Further, the mounting body is composed of a plate-shaped member, the handrail belt drive wheels and the like are arranged on the front side thereof, and the drive sprockets, the deflecting idler, and the tension sprocket are arranged on the rear side thereof. The body serves as a partition wall to prevent the refueling from scattering on the handrail belt or the like.

Further, when the diameter D ₁ of the mounting hole into which the bearing for the handrail belt drive wheel is fitted is made larger than the outer diameter D _{2 of the} sprocket for the handrail belt drive wheel, when the bearing of the above bearing is replaced, etc. In the above, the handrail belt drive wheel device can be pulled out from the mounting body with the sprocket mounted, and the periodic inspection or replacement can be promptly dealt with.

Further, the handrail drive wheel device is driven by one handrail chain, and the refueling state of the handrail chain can be checked and refueling can be performed in the machine room, which is performed when the second handrail chain is conventionally inspected. There is no need to attach / detach other parts, and maintenance and inspection can be easily performed.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a passenger conveyor equipped with a handrail drive device of the present invention.

FIG. 2 is a front view of a handrail drive unit according to the present invention.

FIG. 3 is a view on arrow D-D of FIG.

FIG. 4 is a front view of the mounting body.

5 is a partial cross-sectional view taken along the line BB of FIG.

6 is a cross-sectional view taken along the line GG in FIG.

FIG. 7 is a detailed cross-sectional view of a stretching device according to the present invention.

FIG. 8 is a perspective view of the support body in FIG.

9 is a perspective view of the guide shown in FIG. 7. FIG.

10 is a side view of the shaft in FIG. 7. FIG.

FIG. 11 is a side view of the handrail drive device of the present invention.

FIG. 12 is an explanatory view of a centering method for the handrail drive device unit of the present invention.

FIG. 13 is a side view seen from the inside of the main body frame portion to which the mounting seat according to the present invention is attached.

FIG. 14 is a plan view of FIG.

FIG. 15 is a sectional view taken along line FF in FIG.

FIG. 16 is a side view of a passenger conveyor equipped with a conventional handrail driving device.

FIG. 17 is a diagram showing a schematic configuration of a power transmission unit of a conventional handrail driving device.

FIG. 18 is a side view showing a schematic configuration of a conventional handrail drive device.

FIG. 19 is a view on arrow AA of FIG. 18.

[Explanation of symbols]

 1 Body Frame 4 Handrail Belt 7b Handrail Sprocket 30 Attachment 32 Handrail Belt Drive Wheel 35 Shaft 37 Push Wheel 38 Spacing Piece 39 Support Frame 40 Notch 41 Flange 43 L-Shaped Support Frame 44 Guide Shaft 46 Press Spring 47 Recess 50 Sprocket 51b Stop nuts 53, 54 Deflection idler 60 Handrail chain 61 Stretching device 66 Support 68 Guide groove 69 Tension sprocket mounting shaft 70 Guide element 71 Screw rod 74 Tension sprocket 81, 82, 83 Sliding plate device 86 Adjusting member 88 Sliding plate piece 89 Piano wire 90 Mounting seat 92 Adjustment liner

Claims (11)

[Claims] 1. A man conveyer having a transporter for transporting a person, a handrail belt that moves cyclically with the transporter, a driving device for driving these, and a transmission device for transmitting power to the transporter and the handrail belt. In the handrail drive device, the driving wheels of the handrail belt, the pressing wheels that press the handrail belt against the driving wheels, and the driven sprockets for driving them are attached to one attachment body, and the attachment body is attached to the man conveyor. A handrail drive device for a passenger conveyor, which is mounted on a main body frame of a passenger conveyor. 2. The handrail drive for a man conveyor according to claim 1, wherein the mounting body is further provided with a deflector idler device for a handrail chain wound around a sprocket for a handrail belt drive wheel. apparatus. 3. A handrail drive device for a man conveyor according to claim 1, wherein a stretcher device for a handrail chain is further attached to the attachment body. 4. A stretcher for adjusting the length of a handrail chain is provided between the handrail belt drive wheels and at least two handrail belt drive wheels. The handrail drive device for a passenger conveyor according to any one of 1 to 3. 5. The handrail drive device for a man conveyor according to claim 1, wherein the mounting body is formed of a steel plate, a non-ferrous plate, or a plastic plate. 6. An inner diameter D _{1 of} a mounting hole formed in the mounting body for fitting and mounting a bearing portion of a handrail belt drive axle,
Characterized in that it is larger than the outer diameter D ₂ of the handrail belt driving wheel sprocket, handrail drive of passenger conveyor according to any Isure of claims 1 to 5. 7. A mounting surface of a mounting seat provided on the main body frame is adjusted to a predetermined size from a main body reference in order to mount the mounting body to the main frame of the passenger conveyor. When attached to, characterized in that the tooth thickness center plane of the handrail sprocket directly driven by the drive machine, and the tooth thickness center plane of the handrail belt drive wheel sprocket are substantially in the same plane, The handrail drive device for a passenger conveyor according to any one of claims 1 to 6. 8. A handrail belt drive wheel and a pressing wheel are arranged on the front side of the mounting body, and a handrail belt drive wheel sprocket is arranged on the rear side of the mounting body. 8. A handrail drive device for a passenger conveyor according to any one of items 1 to 7. 9. A sprocket for a handrail belt drive wheel, a baffle idler, and a sprocket of a stretcher, the spacing between the tooth thickness center plane and the mounting body mounting surface is adjusted by a cylindrical spacer provided on the shaft of each sprocket. The handrail drive device for a passenger conveyor according to any one of claims 1 to 8, characterized in that. 10. A handrail chain is wound between a handrail sprocket directly driven by a drive machine and a sprocket for each handrail belt drive wheel, according to any one of claims 1 to 8. Handrail drive device for passenger conveyor according to. 11. The hand conveyor according to claim 10, wherein the traveling portion of the handrail chain is provided with a sliding plate made of synthetic rubber or the like which is in constant contact with the handrail chain from the lower side thereof. Handrail drive.