JP2000007263A - Moving sidewalk - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly drive a moving sidewalk by a simple structure without generating the vibration and noise by making a pallet perform a circular arc movement in such a way that it moves in parallel by both end sprockets. SOLUTION: Phases of the centers of drive shafts of drive sprockets 2a, 2b are deviated from each other by a length L for the direction of travel of a pallet 1, and the length L is equal to a phase deviation L in the front and rear of left and right chain connection shafts 12b, 12c. The chain connection shafts 12b, 12c are provided on a substantially diagonal line of the pallet 1 to prolong the length L, suppress the vibration of the pallet 1, and improve the stability at the time of circular arc movement. The pallet 1 has support rollers 7a to 7d, and the rollers 7b, 7c protrude on the outside on the left and right from the rollers 7a, 7d to put the pallet 1 on a guide rail until immediately before parallel travel type circular arc movement is started so that the pallet 1 is stabilized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving sidewalk, and more particularly to a moving sidewalk that can be installed even in a space where a floor pit is shallow, and can be operated smoothly and quietly.

[0002]

2. Description of the Related Art Moving sidewalks are frequently used as a new means of transporting passengers in many places such as stations, airport facilities, tourist facilities, and entertainment facilities. A conventional moving sidewalk is configured such that, for example, a plurality of sets of pallets are arranged on one another, and the pallets are continuously moved through driving means such as an endlessly connected chain. It moves while riding on the tread. The pallets are circulated through chains and the like by sprockets provided at both ends of the moving sidewalk. FIG. 9 shows a sprocket portion of a conventional moving walkway. In the sprockets 2 at both ends before and after the pallet 1 is circulated, the pallet 1 rotates around the sprocket 2 and inverts its tread surface 1a.

[0003]

However, in the conventional structure shown in FIG. 9, the diameter of the sprocket 2 needs to be at least longer than the width of the pallet 1 in the traveling direction, and is actually more than twice the width in the traveling direction. Is required. As a result, there is a problem that the pit width H 'from the floor surface 13 must be increased to accommodate the sprocket. The pit can be made shallow by shortening the length of the pallet. However, the number of pallets and the number of connecting parts are increased, so that the production cost is increased, and maintenance and inspection become complicated and impractical.

Further, since the pallet 1 having a large mass rotates around the sprocket 2 and reverses, there is a problem that vibration and noise are generated when the circulating speed is increased.

An object of the present invention is to provide a pallet-type moving walkway which has a simple structure, has a shallow pit, and can be driven smoothly without vibration and noise. And

[0006]

SUMMARY OF THE INVENTION A moving walkway of the present invention comprises a chain connected endlessly and wound between two end sprockets, a plurality of pallets mounted on the chain, and a drive for circulating the pallets. Device and
The pallet performs a circular motion in a parallel movement with a sprocket at both ends.

Further, the pallet is mounted between the two chains with the phase of the connecting shaft shifted to the left and right with respect to the moving direction, and the rotation shaft phase of the left and right sprockets is adjusted in accordance with the phase shift of the connecting shaft. Are shifted back and forth.

[0008] Further, a support roller is provided at a coupling axis position of the pallet, and a roller at a diagonal position protrudes outward in the left-right direction from a roller at another diagonal position.

According to the present invention, since the pallet performs a circular motion in a parallel movement with the sprockets on both ends, a sprocket having a large diameter corresponding to the moving direction length of the pallet generated due to rotation and reversal becomes unnecessary. That is, sprockets at both ends can be reduced regardless of the length of the pallet.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a diagram showing the entire moving sidewalk according to the present invention. A plurality of pallets 1, a driving device 4, a driving sprocket 2 connected to the driving device 4, a driven sprocket 2, and a driven sprocket provided with a pit (a lower surface in the direction of the arrow in the figure) under the floor and attached to a chain connected endlessly. 3 and the like are stored in a pit below the floor, and a moving handrail 5 is provided on the floor.

FIG. 2 is a plan view of the moving sidewalk on the drive sprocket 2 side. A plurality of pallets 1 on which passengers ride are provided with support rollers 7a, 7b, 7c, 7d provided at four corners.
And a chain connecting shaft 12 provided at the tip of the shaft of the diagonal rollers 7b, 7c. The endless circulation driving chains 8a, 8b rotatably attached to the chain connecting shaft 12 support rollers. 7a, 7b, 7c, 7d
Rolls on the guide rail 6. Chain 8 for circulation drive
a is a driving sprocket 2a and a driven sprocket 3a
Similarly, the circulation drive chain 8b is wound around the driving sprocket 2b and the driven sprocket 3b endlessly, and is driven by the driving sprockets 2a and 2b, respectively. The drive sprockets 2a and 2b are further integrally provided with sprockets outside thereof, and the motor 1
The sprockets 11a and 11b provided in a drive device including a brake 0, a brake and a speed reducer 11 are driven by left and right power chains 9a and 9b.

In the present invention, a plurality of pallets 1 perform a circular motion in parallel with the driving sprocket 2 and the driven sprocket 3. FIG. 3 is a side view showing the moving state of the pallet 1 in FIG. 2, and FIG. 4 is an enlarged sectional view taken along the line AA in FIG. The pallet 1 always moves with the tread surface 1a as the upper surface in the reciprocating path between the driving sprocket 2 and the driven sprocket 3, and changes the traveling direction at the driving sprocket 2 and the driven sprocket 3.

An example in which a circular motion is performed in a parallel movement will be described. FIG. 5 is an enlarged view of the drive sprocket 2 side of the pallet 1 in FIG. FIG. 6 is an enlarged view of the support roller portion. In FIG. 5, the drive sprockets 2a and 2b
Are shifted from each other by a length L. This length L is the same as the phase shift L before and after the left and right chain connecting shafts 12b and 12c of the pallet 1 shown in FIG. The chain connecting shafts 12b and 12c are preferably provided substantially diagonally on the pallet 1 in FIG. By providing them on a substantially diagonal line, the length L can be increased, vibration of the pallet 1 can be suppressed, and stability during the circular motion can be improved.

The pallet 1 has support rollers 7a, 7b, 7c which support the four corners and roll on guide rails 6,
7d, and the pair of diagonal rollers 7b, 7c protrude left and right outside the other diagonal rollers 7a, 7d.
By projecting the rollers 7b, 7c to the left and right outside from the rollers 7a, 7d, the pallet 1 can be put on the guide rail 6 until immediately before starting the circular motion in a parallel movement, and the pallet 1 is stabilized. Pallet 1
Can be put on the guide rail 6, so that the floor surface 13 can be moved backward just before the driving sprocket 2. Therefore, it is possible to shorten the front-rear direction of the sidewalk including the installation portion, and to save space. The shafts of the protruding diagonal rollers 7b and 7c are further extended outward to form a chain connecting shaft 12, and an endless circulation driving chain 8 is rotatably attached to the connecting shaft 12. Note that the coupling shaft 12 and the roller 7 can be separately mounted without being integrated.

When the circulating drive chains 8a and 8b are driven, the pallet 1 starts moving and the drive sprocket 2a
2 and 2b, the circulating drive chains 8a and 8b are supported while being displaced by the distance L, and the tread surface 1a always moves around the drive sprockets 2a and 2b in an arc with the upper surface (FIG. 3). In this arc movement part, the pallet 1 is connected to the sprocket 2 via the chain connecting shaft 12.
circulation drive chain 8 meshing with a and 2b
Since the pallets are supported by a and 8b and the phases of the axes of the left and right chain connecting shafts are shifted by the length L, the pallet can stably perform an arc motion without swinging. That is, the swing axis of the pallet 1 is on a diagonal line, and the direction of the chain connecting shaft 12 is a direction perpendicular to the moving direction of the pallet 1 and the directions of both axes are different. The swing of the pallet can be suppressed during the operation.

If the driving sprockets 2a and 2b are installed at a distance L, the diameter of the sprocket becomes
The thickness can be reduced to about the sum of the thickness of the pallet 1 or the guide roller 7 and the thickness of the guide rail 6 for holding the pallet (FIG. 4). As described above, since the pallet 1 does not rotate and invert along the driving sprocket,
By reducing the diameter of the sprocket, the depth of the pit can be reduced and space can be saved.

A guide rail 6 is provided between the driving sprocket 2 and the driven sprocket 3, and the pallet 1
Receiving and guiding the support roller 7. Guide rail 6
FIG. 7 shows the installation position of. FIG. 7 is a plan view of the guide rail 6. Both ends of the upper guide rail 6a are provided up to a position before the support roller 7 moves integrally with the pallet and makes a circular motion at the sprocket portion. In addition, the lower guide rail 6b can be extended horizontally to the arc movement portion.

The relationship between a plurality of pallets will be described. The pallet that started the circular motion at the sprocket moves on a curve that has a cycloid curve whose base circle is the pitch circle diameter of the sprocket relative to the pallet that is moving horizontally. Provide a gap that is not large. In addition, when the thickness from the axis of the chain connection shaft 12 to the upper surface or the lower surface of the pallet is large at the front and rear ends in the traveling direction of the pallet, the gap between the pallets needs to be narrowed. Is preferably a cycloid curve or an approximate curve or straight line.

FIG. 8 shows how a moving sidewalk is attached. FIG. 8 is a cross-sectional view of the moving sidewalk on the drive sprocket side. The driving sprocket 2 and the speed reducer 11 are stored in a pit below the floor 13, and the pallet 1 is circulated on the guide rail 6 by the support roller 7. A moving handrail 5 is provided on the floor in conjunction with the moving speed of the pallet 1. The pit depth H can be reduced because there is no rotational movement of the pallet 1, and space can be saved. Also,
Since the moving handrail 5 can be installed on the drive sprocket 2, the installation area before and after the moving sidewalk can be reduced.

[0020]

According to the moving walkway of the present invention, a plurality of pallets perform an arc motion in parallel at the sprocket portions at both ends, so that the pallets are not rotated by the sprockets and inverted. Therefore, the reciprocating movement of the pallet is smooth, and a quiet operation is possible. Further, since the size of the sprocket can be determined to be small regardless of the length of the pallet, the pit can be made shallow and a space-saving moving sidewalk can be obtained.

Further, the phase of the rotating shaft of the sprocket is shifted back and forth in accordance with the phase of the coupling axis of the pallet shifted forward and backward, so that the pallet does not run out and the above-described parallel-moving arc movement is performed more smoothly and quietly. It is.

Further, since the rollers provided at the four corners of the pallet and located at the diagonal positions protrude outward in the left-right direction from the rollers at the other diagonal positions, the pallets can be easily attached to each other. Further, the pallet can be put on the guide rail until just before the above-mentioned parallel arc movement starts, and the drive unit can be shortened, so that the front-rear direction of the moving sidewalk can be shortened and space can be saved.

[Brief description of the drawings]

FIG. 1 is a diagram showing an entire moving sidewalk.

FIG. 2 is a plan view of a driving sprocket.

FIG. 3 is a side view showing a moving state of a pallet in FIG. 2;

FIG. 4 is a sectional view taken along line AA in FIG. 2;

FIG. 5 is an enlarged view of the pallet in FIG. 2 on the driving sprocket side.

FIG. 6 is an enlarged view of a support roller unit.

7 is a plan view of the guide rail 6. FIG.

FIG. 8 is a cross-sectional view of a moving sidewalk on a driving sprocket side.

FIG. 9 is a view showing a sprocket portion of a conventional moving sidewalk.

[Explanation of symbols]

 Reference Signs List 1 pallet 2 drive sprocket 3 driven sprocket 4 drive device 5 moving handrail 6 guide rail 7a, 7b, 7c, 7d support roller 8a, 8b circulation drive chain 9a, 9b power chain 10 motor 11 reduction gear 12b, 12c chain connecting shaft 13 Floor

Claims (3)

[Claims] 1. A moving walkway having a chain connected endlessly and wound between sprockets at both ends, a plurality of pallets attached to the chain, and a driving device for circulating the pallets, The moving sidewalk, wherein the pallet performs a circular motion in parallel with the sprocket. 2. The pallet is attached between the two chains by shifting the phase of the connecting shaft back and forth in the left and right directions with respect to the moving direction, and rotating the sprockets on the left and right according to the phase shift of the connecting shaft. The moving sidewalk according to claim 1, wherein the axial phase is shifted forward and backward. 3. The pallet according to claim 1, wherein a support roller is provided at a coupling axis position of the pallet, and a roller at a diagonal position protrudes outward in the left-right direction from a roller at another diagonal position. The moving walkway described in 2.