JP5132078B2 - Passenger conveyor equipment - Google Patents

Description

  The present invention relates to a passenger conveyor device such as a moving sidewalk or an escalator.

  Passenger conveyor devices such as moving walkways and escalators include a plurality of stepped portions on which passengers ride and a pair of endless conveyor chains to which these stepped portions are connected. The conveyor chain is stretched between a pair of sprockets provided on the entrance side and the exit side, and the sprocket is rotationally driven by a driving device such as a motor, so that the stepping portion is moved together with the conveyor chain. Circulates between mouth.

  The step portion and the conveyor chain are connected by fixing fixing portions provided at both ends of the step portion to the outer peripheral side edge portion of the link plate of the conveyor chain.

  The conveyor chain is formed by connecting a plurality of link plates by a plurality of connecting shafts, and guide rollers are attached to all the connecting shafts or every other connecting shaft. The guide roller is engaged with a guide rail installed along the circulation movement direction of the conveyor chain. When the guide roller is engaged with the guide rail, the stepped portion is prevented from being displaced in the vertical direction when the stepped portion is circulated together with the conveyor chain.

  By the way, in recent years, the space saving of the installation space of the passenger conveyor device has been demanded, and in order to meet the demand for space saving, it is effective to use a sprocket having a small diameter and a small number of teeth. However, if a sprocket with a small diameter and a small number of teeth is used, the stepping part moves back and forth along the direction of travel in the straight part of the conveyor chain due to the so-called polygonal effect that occurs when the conveyor chain advances along the sprocket. It is known to vibrate.

For the purpose of suppressing such polygonal effects and preventing the occurrence of longitudinal vibration of the tread part, a bent part protruding in a mountain shape is formed in the vicinity of the sprocket in the guide rail, and the area facing the bent part A passenger conveyor device is known in which a rail is arranged on the outer peripheral side of a bent portion, and a guide roller is sandwiched between the guide rail and the presser rail (see, for example, Patent Document 1 or 2). The guide rail in which the bent portion is formed compensates for speed unevenness due to the polygonal effect by detouring the link fulcrum of the conveyor chain in accordance with the speed change of the stepped portion.
JP 2003-252560 A Japanese Patent Laid-Open No. 2004-2007

  However, in the above-described passenger conveyor, the following points are not considered.

  When using a guide rail with a curved part protruding in a chevron, to suppress longitudinal vibration of the step part, the guide roller flutters in the vertical direction before and after passing through the curved part, A phenomenon of collision with the guide rail occurs. This phenomenon becomes remarkable on the lower side of the sprocket, which is the side on which gravity acts on the guide roller in the direction away from the guide rail.

  Even if the guide roller flutters in the vertical direction and collides with the rail or the guide rail, it causes abnormal vibration and noise in the stepping portion, which causes discomfort to the passenger conveyor user.

  In order to prevent the guide roller from flapping in the vertical direction, the distance between the guide rail and the presser rail should be reduced so that the guide roller does not flutter between the guide rail and the presser rail. Is effective.

  However, in the case where the fixed part of the step part is fixed to the outer peripheral side edge of the link plate, if the gap between the guide rail and the presser rail is reduced, the guide roller passes through the bent part. A situation occurs in which the fixed portion comes into contact with the rail. When such contact occurs, abnormal noise is generated from the contact portion, and the guide rail and the stepping portion are deteriorated due to wear.

  For this reason, it has not been realized to reduce the gap between the guide rail and the presser rail to the outer diameter of the guide roller.

  The present invention has been made to solve such a problem, and its purpose is in a conveyor device such as a moving walkway provided with a guide rail having a mountain-shaped bent portion in order to suppress longitudinal vibration of the stepping portion. The passenger conveyor device that reduces the gap between the guide rail and the presser rail to the outer diameter of the guide roller and prevents the guide roller from flapping in the vertical direction between the guide rail and the presser rail. Is to provide.

A feature according to the embodiment of the present invention is that an endless conveyor chain that has a plurality of link plates and a connecting shaft that connects these link plates and circulates between two sprockets; A plurality of stepped portions connected to the conveyor chain and an area in which the circulation movement direction of the conveyor chain is switched from a linear direction to an arc direction along the outer periphery of the sprocket. A guide rail having a bent portion protruding in a mountain shape toward the outer peripheral side of the circulation movement path, a plurality of guide rollers attached to the link plate and engaged with and moved by the guide rail, A presser rail disposed on an outer peripheral side of the guide rail in a region facing the bent portion, and the conveyor chain The step portion is connected by fixing a fixing portion provided on the step portion to an outer peripheral side edge portion of the link plate, and from the outer peripheral side edge portion of the link plate to the outer peripheral side of the fixing portion. The height to the surface is set such that the fixed portion does not contact the presser rail, and the outer peripheral surface of the link plate to which the guide roller is attached from the outer peripheral surface of the guide roller. The clearance dimension between the tangent line extending in parallel and the outer peripheral side surface of the fixed part fixed to the outer peripheral side edge is 60% or more of the height dimension of the bent part. is there.

  According to the present invention, even when the gap between the guide rail having the bent portion and the holding roller is reduced to the outer diameter of the guide roller, the fixing portion of the stepping portion is prevented from contacting the holding roller. Thus, even if the guide roller fluctuates in the vertical direction, it is possible to prevent the occurrence of abnormal vibrations and noise of the stepping portion caused by the collision with the rail or the guide rail.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
As shown in FIG. 1, the moving sidewalk that is the passenger conveyor device according to the first embodiment of the present invention has a truss 1 installed in the horizontal direction, and the truss 1 is formed below the road surface. It is housed in a concave pit. In the truss 1, a pair of driven sprockets 3 located on the entrance 2 side, a pair of driving sprockets 5 located on the descending exit 4 side, and a rotation that transmits driving force to the driving sprocket 5. A driving device 6 is disposed.

  An endless conveyor chain 7 is stretched between the drive-side sprocket 5 and the driven-side sprocket 3. Two conveyor chains 7 are provided. One conveyor chain 7 is stretched between one set of sprockets 3 and 5, and the other conveyor chain 7 is interposed between the other set of sprockets 3 and 5. It is stretched over. The two sets of sprockets 3 and 5 and the two conveyor chains 7 are arranged in parallel positions in the horizontal direction. FIG. 1 shows one set of sprockets 3 and 5 and one conveyor chain 7. Yes.

  The conveyor chain 7 includes a plurality of link plates 8 that are positioned in parallel and form a set of two pieces, and a plurality of connecting shafts 9 that connect end portions of the link plates 8 to each other. A roller 10 that serves as both a conveyor roller and a guide roller is attached to the connecting shaft 9 between the link plates 8 forming a set of two sheets. The teeth 11 of the sprockets 3 and 5 mesh with the outer peripheral surface of the roller 10. When the rotation driving device 6 is driven in a state where the teeth 11 of the sprockets 3 and 5 are engaged with the outer peripheral surface of the roller 10, the sprocket 5 is driven to rotate, and the conveyor chain 7 moves between the entrance 2 and the exit 4. It moves cyclically.

  A plurality of step portions 12 are connected between the two conveyor chains 7. The step portion 12 is exposed on the road surface, and is a portion that carries a user of a moving sidewalk and carries it from the entrance 2 to the exit 4. The step portion 12 is connected to the conveyor chain 7 by fixing the fixing portions 12a provided at both ends of the step portion 12 to the outer peripheral side edge portion 8a of the link plate 8 by bolting or the like.

  In the truss 1, a guide rail 13 extending along the direction of circulation movement of the conveyor chain 7 is disposed. The guide rail 13 is divided into one central guide rail 13a and two end guide rails 13b. A support member 1a is fixed to the truss 1 with bolts or the like, and a center guide rail 13a and an end guide rail 13b are fixed to the support member 1a with bolts 14. Two bent portions 15 are formed on each end guide rail 13 b which is a part of the guide rail 13. The bent portion 15 is positioned in a region where the circulation movement direction of the conveyor chain 7 is switched from the linear direction to the arc direction along the outer circumference of the sprockets 3 and 5, and the mountain is directed toward the outer circumference side of the circulation movement path of the conveyor chain 7. It is formed in a shape that protrudes from the mold. When the conveyor chain 7 circulates, the roller 10 engages with the guide rail 13 and moves.

  Further, press rails 16 and 17 are fixed to the truss 1. The presser rail 16 is disposed above the conveyor chain 7 and on the outer peripheral side of the guide rail 13 in a region facing the bent portion 15. The presser rail 16 is provided on each of the sprocket 3 side and the sprocket 5 side. The presser rail 17 is disposed on the outer peripheral side of the guide rail 13 in a region on the lower side of the conveyor chain 7 and facing the bent portion 15. The presser rail 17 is integrally formed continuously between the sprocket 3 and the sprocket 5. The vertical gap between the presser rails 16 and 17 and the guide rail 13 is set to be slightly larger than the outer diameter of the roller 10.

  As described above, the fixing portion 12 a provided in the step portion 12 is fixed to the outer peripheral side edge portion 8 a of the link plate 8. In this fixed location, as shown in FIG. 4, the height dimension “A” from the outer peripheral edge 8a of the link plate 8 to the outer peripheral surface 12b of the fixed portion 12a is set. This height dimension “A” is set to a dimension in which the fixing portion 12 a does not come into contact with the rails 16 and 17 when the conveyor chain 7 circulates. For example, a tangent line “a” extending in parallel to the outer peripheral side edge portion 8a of the link plate 8 to which the roller 10 is attached from the outer peripheral surface of the roller 10, and a fixed portion fixed to the outer peripheral side edge portion 8a. The clearance dimension “B” between the outer peripheral side surface 12b of 12a is 60% or more of the height dimension “C” of the bent portion 15 shown in FIG.

  As shown in FIG. 4, the link plate 8 includes a middle line extending in parallel with the outer peripheral side edge portion 8 a of the link plate 8 including the attachment position of the connecting shaft 9 as the attachment position of the roller 10 on the link plate 8. The dimension “D” from “b” to the outer peripheral edge 8a of the link plate 8 and the dimension “E” from the middle line “b” to the inner peripheral edge 8b of the link plate 8 are set equal.

  In such a configuration, when the rotation driving device 6 is driven, the driving sprocket 5 is rotationally driven, and when the sprocket 5 is rotationally driven, the conveyor chain 7 is stepped on between the two sprockets 3 and 5. 12 and circulate. The direction of circulation movement of the conveyor chain 7 and the step portion 12 is the direction of the arrow “X” shown in FIG. 1, and the direction in which the user who rides on the step portion 12 moves from the entrance 2 toward the exit 4. is there. It should be noted that the moving sidewalk can be switched between the entrance and the exit, and in this case, the circulation movement direction of the conveyor chain 7 and the tread 12 is opposite to the direction indicated by the arrow “X”.

  When the conveyor chain 7 circulates between the sprockets 3 and 5, the roller 10 is engaged with the guide rail 13 and moves. A bent portion 15 is formed in the guide rail 13 in a region in the vicinity of the sprockets 3 and 5 where the circulation movement direction of the conveyor chain 7 is switched from a linear direction to an arc direction along the outer periphery of the sprockets 3 and 5. Yes. For this reason, when the conveyor chain 7 turns around the sprockets 3 and 5, it is possible to prevent the occurrence of longitudinal vibration along the circulating movement direction of the stepped portion 12.

  In the region where the presser rails 16 and 17 are provided, the vertical gap between the presser rails 16 and 17 and the guide rail 13 is set to be slightly larger than the outer diameter of the roller 10. Yes. For this reason, it is prevented that the roller 10 flutters in the up-down direction before and after passing through the bent portion 15, and the roller 10 fluttered in the up-down direction collides with the rails 16, 17 and the guide rail 13. Is prevented. Therefore, even if the roller 10 flutters in the vertical direction and collides with the rails 16, 17 and the guide rail 13, it is possible to prevent noise and abnormal vibration in the tread 12.

  In addition, the gap dimension “B” between the tangent “a” of the outer peripheral surface of the roller 10 and the outer peripheral surface 12 b of the fixed portion 12 a fixed to the outer peripheral edge portion 8 a of the link plate 8 is It is a dimension that is 60% or more of the height dimension “C”. As a result, even when the vertical gap between the presser rails 16, 17 and the guide rail 13 is set to be slightly larger than the outer diameter of the roller 10, the roller 10 passes through the bent portion 15. Therefore, it is possible to prevent the fixing portion 12a from contacting the rails 16 and 17.

  Therefore, when the conveyor chain 7 and the stepping portion 12 are circulated and moved, the roller 10 can be prevented from fluttering up and down and colliding with the rail 16 or the guide rail 13, and the fixing portion 12a can be suppressed. Contact with the rails 16 and 17 can be prevented.

  In the first embodiment, as an example of the guide rail 13, the guide rail 13 is divided into one central guide rail 13a and two end guide rails 13b, and the central guide rail 13a and the end guide rail are formed. The guide rails 13b and the bolts 14 are described as an example, but the guide rails may be integrally formed. Alternatively, a two-divided structure in which the end guide rail 13b is connected to only one side may be used.

(Second Embodiment)
A second embodiment of the present invention will be described with reference to FIG. Note that, in the second embodiment and subsequent embodiments, the same components as those described in the first embodiment are denoted by the same reference numerals, and redundant descriptions are omitted.

  In a moving sidewalk that is a passenger conveyor device according to the second embodiment, an endless conveyor chain 7A is stretched between a pair of sprockets 3 and 5 (see FIG. 1).

  The conveyor chain 7 </ b> A includes a plurality of link plates 21 that are positioned in parallel and form a pair, and a plurality of connecting shafts 9 that connect end portions of the link plates 21. The connecting shaft 9 is provided with a roller 10 that serves as both a conveyor roller and a guide roller that is positioned between a pair of link plates 21.

  Two conveyor chains 7A are disposed in parallel positions in the horizontal direction, and a plurality of stepping portions 22 are connected between the two conveyor chains 7A. The step portion 22 is connected to the conveyor chain 7A by fixing the fixing portions 22a provided at both ends of the step portion 22 to the outer peripheral side edge portion 21a of the link plate 21 by bolting or the like.

  The link plate 21 includes a mounting position of the connecting shaft 9 that is the mounting position of the roller 10 on the link plate 21, and includes a link line 21 extending from a middle line “b” extending in parallel with the outer peripheral edge 21 a of the link plate 21. The dimension “F” to the outer peripheral edge 21 a is set smaller than the dimension “G” from the middle line “b” to the inner peripheral edge 21 b of the link plate 21.

  Accordingly, the roller 10 is connected from the outer peripheral surface of the roller 10 without reducing the height dimension “H” from the outer peripheral edge 21a of the link plate 21 to the outer peripheral surface 22b of the fixed portion 22a. A clearance dimension “B” between a tangent “a” extending in parallel to the outer peripheral edge 21a of the link plate 21 and the outer peripheral surface 22b of the fixed portion 22a fixed to the outer peripheral edge 21a The height dimension “C” of the bent portion 15 can be 60% or more.

  In such a configuration, according to the second embodiment, the operation described in the first embodiment can be obtained. Furthermore, since the height dimension “H” of the fixing portion 22a can be increased, the strength of the connecting portion of the step portion 22 to the conveyor chain 7A can be increased.

  In addition, the outer peripheral side edge part 21a of this Embodiment has shown the case where the edge part of the link plate 21 has the shape where the center part of the longitudinal direction was dented and the recessed part was formed. However, the shape of the outer peripheral edge 21a is not limited to such a concave shape, and the dimension “F” from the middle line “b” is uniform throughout the entire length of the link plate 21 in the longitudinal direction. You may form in a shape.

(Third embodiment)
A third embodiment of the present invention will be described with reference to FIG.

  In a moving sidewalk that is a passenger conveyor device according to the third embodiment, guide rails 31 are provided in the truss 1 so as to be arranged along the circulation movement direction of the conveyor chain 7. The guide rail 31 is divided into one central guide rail 31a and two end guide rails 31b, and the end guide rails 31b are fixed to both ends of the central guide rail 31a by bolts. The end guide rail 31b which is a part of the guide rail 31 is formed with two bent portions 15 each having a shape protruding in a mountain shape toward the outer peripheral side of the circulation movement path of the conveyor chain 7. In the guide rail 31, the height dimensions in the vertical direction of the areas before and after the bent portion 15 are set differently. For example, the dimension “I” from the top of the bent portion 15 in the region opposite to the sprocket 3, 5 sandwiching the bent portion 15 is the top of the bent portion 15 in the region of the sprocket 3, 5 sandwiching the bent portion 15. Is set smaller than the dimension “J”.

  In such a configuration, according to the third embodiment, the operation described in the first embodiment can be obtained. Furthermore, since the height dimension of the area | region before and behind the bending part 15 in the guide rail 31 differs, the speed change of the roller 10 when the roller 10 passes the bending part 15 can be suppressed, and the upper and lower sides of the roller 10 can be suppressed. Fluttering in the direction can be suppressed.

It is a side view showing the whole passenger conveyor device composition concerning a 1st embodiment of the present invention. It is a side view which expands and shows a part of passenger conveyor apparatus. It is a side view which expands and shows a part of guide rail. It is a side view which expands and shows a part of conveyor chain. It is a side view which expands and shows a part of conveyor chain in the passenger conveyor apparatus which concerns on the 2nd Embodiment of this invention. It is a side view which expands and shows a part of guide rail in the passenger conveyor apparatus which concerns on the 3rd Embodiment of this invention.

Explanation of symbols

3,5 Sprocket 7 Conveyor chain 7A Conveyor chain 8 Link plate 8a Outer peripheral edge 8b Inner peripheral edge 9 Connecting shaft 10 Guide roller 12 Step 12a Fixed part 12b Outer peripheral surface 13 Guide rail 15 Bending part 16 Pressing rail 17 Presser rail 21 Link plate 21a Outer peripheral edge 21b Inner peripheral edge 22 Step 22a Fixed part 22b Outer peripheral surface 31 Guide rail

Claims (4)

An endless conveyor chain that has a plurality of link plates and a connecting shaft that connects these link plates and circulates between two sprockets;
A plurality of stepped portions connected to the conveyor chain;
It is arranged along the circulation movement direction of the conveyor chain, and is located in a region where the circulation movement direction of the conveyor chain is switched from a linear direction to an arc direction along the outer circumference of the sprocket, toward the outer circumference side of the circulation movement path. A guide rail having a bent portion protruding in a mountain shape;
A plurality of guide rollers attached to the link plate and engaged and moved with the guide rail;
A holding rail disposed on the outer peripheral side of the guide rail in a region facing the bent portion;
With
The connection of the stepped portion to the conveyor chain is performed by fixing a fixing portion provided in the stepping portion to an outer peripheral side edge portion of the link plate,
The height dimension from the outer peripheral side edge of the link plate to the outer peripheral side surface of the fixed part is set to a dimension in which the fixed part does not contact the presser rail ,
A tangent line extending in parallel to the outer peripheral edge of the link plate to which the guide roller is attached from the outer peripheral surface of the guide roller, and the outer peripheral surface of the fixed portion fixed to the outer peripheral edge A passenger conveyor device characterized in that a gap dimension between the two is 60% or more of a height dimension of the bent portion . The link plate includes a mounting position of the guide roller on the link plate and includes a dimension from a middle line extending in parallel with the outer peripheral edge of the link plate to the outer peripheral edge, and from the middle line. 2. The passenger conveyor device according to claim 1, wherein a dimension of the link plate to the inner peripheral side edge is set to be equal . The link plate includes a mounting position of the guide roller on the link plate, and a dimension from a middle line extending in parallel with the outer peripheral side edge of the link plate to the outer peripheral side edge is from the middle line. The passenger conveyor device according to claim 1 , wherein the passenger conveyor device is set smaller than a dimension to an inner peripheral side edge portion of the link plate . 2. The passenger conveyor device according to claim 1, wherein the guide rails have different vertical height dimensions in front and rear regions sandwiching the bent portion .

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