JP2006193237A - Man conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a man conveyor restricted in the generation of vibration and noise when running without increasing diameter of a sprocket nor forming engagement grooves of the sprocket shallow. <P>SOLUTION: The man conveyor is provided with a conveyor chain 6 structured into an endless shape by connecting a plurality of front wheel rollers 12, which are respectively supported by each of steps, and auxiliary rollers 13, which are arranged between the front wheel rollers 12, through a plurality of link plates 14 and provided with metal rollers 15, which have a diameter smaller than that of the described rollers and which are arranged outside the link plates 14 of the front wheel rollers 12 and the auxiliary rollers 13, and provided with the sprocket 7 arranged in the turning position of the conveyor chain 6 to apply moving force to the conveyor chain 6 by engaging the metal rollers 15 with the engagement grooves 24 in order. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a man conveyor (passenger conveyor) such as an escalator or a moving sidewalk that applies a moving force to a conveyor chain that supports a plurality of steps via a sprocket.

  As this type of conventional man conveyor, there are those shown in FIGS. In FIG. 8, the escalator 100, which is a man conveyor, includes a pair of left and right frames 103 disposed between the upper floor elevator floor 101 and the lower floor elevator floor 102, and a plurality of steps disposed between the pair of left and right frames 103. 104, a pair of endless left and right conveyor chains 105 for moving the plurality of steps 104, a pair of sprockets 106 disposed at the inverted positions of the left and right ends of each conveyor chain 105, and a sprocket 106 on one side thereof. And a drive motor 107 for rotation.

  The plurality of steps 104 move on a predetermined infinite locus by the guide rollers 104a being guided by the guide rails 108.

  As shown in detail in FIG. 9, the conveyor chain 105 includes a front wheel roller 112 rotatably supported by a support shaft 110 protruding from both ends of each step 104 via a bearing 111, and the adjacent front wheel rotor 112. The auxiliary roller 114 is disposed and supported rotatably on the support shaft 110 via a bearing 113, and a pair of left and right link plates 115 respectively connecting adjacent front wheels and auxiliary rollers 112, 114. The front wheel roller 112 and the auxiliary roller 114 are made of rubber and are disposed between the pair of left and right link plates 115.

  The pair of left and right sprockets 106 on the upper floor elevator floor 2 side are connected via a connecting shaft 116 as shown in FIG. The connecting shaft 116 is rotatably supported by the left and right frames 101. A pulley 117 is fixed to one sprocket 106. The rotation of the drive motor 107 is transmitted to the pulley 117.

  A pair of left and right sprockets 106 on the lower floor elevator floor 3 side are connected via a connecting shaft 118 as shown in FIG. The connecting shaft 118 is rotatably supported by a roller 119 supported by each frame 101.

  As shown in FIGS. 12 and 13, each sprocket 106 has a groove 120 that engages with the entire outer periphery of the sprocket 106. The front wheel roller 112 and the auxiliary roller 114 are engaged with the engagement groove 120.

  In the above configuration, when the drive motor 107 rotates, the sprocket 106 rotates and the conveyor chain 105 moves on an infinite locus. As the conveyor chain 105 moves, the plurality of steps 104 move while being guided by the guide rail 108.

A technique similar to that of the conventional example is disclosed in Patent Document 1 and the like.
JP 2004-115211 A

  Incidentally, the escalator 100 is required to reduce vibration and noise during traveling. One cause of vibration and noise during running is contact noise when the conveyor chain 105 and the sprocket 106 are engaged. In order to reduce the contact noise, a method of increasing the number of meshing portions between the sprocket 106, the front wheel roller 112, and the auxiliary roller 114 can be considered. That is, as the number of bites increases, the rotational force acting on one biting point is dispersed and the contact sound is also reduced.

  In order to increase the number of meshing positions between the sprocket 106 and the front wheel roller 112 and the auxiliary roller 114, it is easy to increase the diameter of the sprocket 106 or to increase the number of engagement grooves 120 formed in the sprocket 106. Can be considered.

  However, the increase in the diameter of the sprocket 106 causes an increase in the installation space of the escalator 100. In recent building circumstances, the installation space of the escalator 100 tends to be space-saving and cannot be adopted.

  Further, in order to increase the number of the engagement grooves 120 without increasing the diameter of the sprocket 106, it is necessary to reduce the interval between the engagement grooves 120. It is necessary to increase the number of auxiliary rollers 114 arranged between the front wheel rollers 112. In the above-described conventional example, the number of auxiliary rollers is two, for example, three. However, since it is necessary to provide a minimum gap between the meshing grooves 120 of the sprocket 106 to maintain a predetermined strength, when the auxiliary roller 114 is increased, the depth of the meshing groove 120 of the sprocket 106 is increased. I have to make it shallow. If the meshing groove 120 is shallow, a situation may occur in which the front wheel roller 112 and the auxiliary roller 114 escape from meshing with the meshing groove 120 of the sprocket 106, which may cause a problem in stable running.

  Therefore, an object of the present invention is to provide a man conveyor that can suppress vibration and noise during traveling without enlarging the diameter of the sprocket or making the biting groove of the sprocket shallow.

  A feature of the present invention is that it is configured endlessly by a plurality of first rollers each supported at each step, a second roller disposed between the rollers, and a link plate that connects the rollers. A conveyor chain provided with a third roller having a diameter smaller than each roller diameter outside the link plate of the first roller and the second roller, respectively, and disposed at a reversal point of the conveyor chain, the third roller being The gist of the present invention is to provide a sprocket that applies a moving force to the conveyor chain by sequentially engaging with the engagement groove.

  According to the present invention, since the third roller having a smaller diameter than the first roller and the second roller is provided, a larger number of second rollers are disposed between the first rollers than before, and the sprocket is more than conventional. In addition, the number of biting grooves having a sufficient depth for biting can be provided, and the number of biting locations between the sprocket and each roller can be increased. As described above, vibration and noise during traveling can be suppressed without increasing the diameter of the sprocket or making the biting groove of the sprocket shallow.

  Further, in the present invention, the third roller of the conveyor chain and the engagement groove of the sprocket mesh with each other, so that the phenomenon that the conveyor chain moves back and forth in the traveling direction does not occur at the moment of engagement, and riding comfort is improved.

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

  1 to 7 show an embodiment of the present invention. In this embodiment, an example in which the man conveyor of the present invention is applied to an escalator is shown. 1 is an overall schematic configuration diagram of an escalator, FIG. 2 is a partial plan view of a conveyor chain, FIG. 3 is an enlarged view of a portion C in FIG. 2, FIG. 4 is a sectional view taken along line AA in FIG. FIG. 6 is an enlarged view of portion D of FIG. 5, and FIG. 7 is a side view showing a state where the conveyor chain and the sprocket are engaged.

  In FIG. 1, an escalator 1 includes a pair of left and right frames 4 arranged at a predetermined interval between an upper floor elevator floor 2 and a lower floor elevator floor 3, and a pair of left and right frames 4. A plurality of steps 5 arranged in a pair, an endless pair of left and right conveyor chains 6 for moving the plurality of steps 5, a pair of sprockets 7 arranged at opposite positions at both ends of each conveyor chain 6, And a drive motor 8 that rotates the sprocket 7 on one side.

  The plurality of steps 5 are continuously arranged along a predetermined endless locus. Each step 5 has a guide roller 10 guided by a guide rail 9. Each step 5 moves in a state where the guide roller 10 is guided by the guide rail 9, whereby each step 5 moves on a predetermined infinite locus.

  As shown in FIG. 2, the conveyor chain 6 is disposed at three positions between the front wheel rollers 12 supported by the support shafts 11 protruding from both side surfaces of each step 5 and the adjacent front wheel rollers 12. A plurality of auxiliary rollers 13, a pair of left and right link plates 14 respectively connecting adjacent front wheel rollers 12 and auxiliary rollers 13, and metal provided outside the link plates 14 of the front wheel rollers 12 and auxiliary rollers 13, respectively. And a roller 15.

  The left and right support shafts 11 of each front wheel roller 12 are connected via a connecting shaft 16. Collars 17 are attached to the left and right sides of the connecting shaft 16 inside the conveyor chain 6. The connecting shaft 16 is fixed to the step 5 through the pair of collars 17.

  The front wheel roller 12 and the auxiliary roller 13 are rotatably supported by their respective support shafts 11 via bearings 11a. As shown in FIG. 3, each support shaft 11 protrudes further outward than the outer link plate 14. A metal roller 15 is rotatably supported on the protruding support shaft 11. The metal roller 15 has a smaller diameter than the front wheel roller 12 and the auxiliary roller 13. The metal roller 15 is formed with a through hole 18 reaching the internal support shaft 11.

  A pair of left and right sprockets 7 on the upper floor elevator floor 2 side are connected via a connecting shaft 20 as shown in FIG. The connecting shaft 20 is rotatably supported by the left and right frames 4. A pulley 21 is fixed to one of the pair of left and right sprockets 7. The rotational force of the drive motor 8 (shown in FIG. 1) is transmitted from the pulley 21.

  As shown in FIG. 5, the pair of left and right sprockets 7 on the lower floor elevator floor 3 side are connected via a connecting shaft 22. The connecting shaft 22 is rotatably supported by rollers 23 supported by the frames 4.

  As shown in detail in FIG. 6 and FIG. 7, each sprocket 7 is formed with a groove 24 that bites in the entire outer peripheral end. The metal roller 15 of the conveyor chain 6 is engaged with the engagement groove 24. Each biting groove 24 is formed in a groove having a size slightly larger than the outer diameter size of the metal roller 15 and having a depth sufficient for the biting of the metal roller 15. A rubber bush 25 as a buffer member is provided at the bottom of each biting groove 24.

  Further, on the inner side surface of each sprocket 7, a ring-shaped tilt prevention protrusion wall 26 centering on the rotation center of the sprocket 7 is provided. The tilt prevention protrusion wall 26 is disposed in the vicinity of an appropriate movement locus of the auxiliary roller 13 and the front wheel roller 12, and prevents the auxiliary roller 13 from tilting.

  In the above configuration, when the drive motor 8 rotates, the rotation is transmitted to the sprocket 7 on the upper floor elevator floor 2 side. Then, the pair of sprockets 7 rotate, and the conveyor chain 6 moves on an infinite locus by the rotation of the pair of sprockets 7. By the movement of the conveyor chain 6, a plurality of steps 5 are guided by the guide rail 9 and travel on a predetermined infinite locus.

  In the above operation process, the rotational force is transmitted from the sprocket 7 to the conveyor chain 6 through the metal roller 15 that is engaged with the engagement groove 24 of the sprocket 7. Here, since the metal roller 15 is formed with a diameter smaller than that of the front wheel roller 12 and the auxiliary roller 13, the three auxiliary rollers 13, which are larger than the conventional example, are interposed between the front wheel rollers 12 as in the above-described embodiment. In addition, the sprocket 7 can be provided with a biting groove 24 having a larger number than the conventional example and having a sufficient depth for biting. As a result, the number of biting locations between the sprocket 7 and each metal roller 15 is large, the rotational force acting on one meshing point is dispersed, and the contact noise is reduced. For this reason, the vibration and noise at the time of driving | running | working can be suppressed without enlarging the diameter of the sprocket 7 or making the biting groove 24 of the sprocket 7 shallow.

  In this embodiment, since the metal roller 15 of the conveyor chain 6 and the engagement groove 24 of the sprocket 7 are engaged with each other, the phenomenon that the conveyor chain 6 moves back and forth in the traveling direction does not occur at the moment of engagement and the riding comfort is improved. To do. This is particularly effective when installed in a station building or the like that is frequently used by passengers.

  Since the front wheel roller 12 and the auxiliary roller 13 do not engage with the engagement groove 24 of the sprocket 7, the bearings 11a of the front wheel roller 12 and the auxiliary roller 13 can have lower strength than the conventional one.

  Since the distance between the adjacent front wheel roller 12 and the auxiliary roller 13 is close, the conveyor chain 6 is improved in strength. For this reason, those having a high escalator floor height increase the tension of the conveyor chain 6, but can be installed with a standard curvature without increasing the upper floor curvature.

  In this embodiment, since the rubber bush 25 serving as a buffer member is provided at the bottom of each engagement groove 24 of the sprocket 6, the metal roller 15 comes into contact with the rubber bush 25 when engaging with the engagement groove 24 of the sprocket 6. Therefore, vibration and noise when the metal roller 15 is biting can be absorbed, and vibration and noise during traveling can be further suppressed. In addition, the ride comfort is improved by this vibration suppression.

  In this embodiment, since the tilt prevention protrusion wall 26 for preventing the tilt of the auxiliary roller 13 is provided on the inner side surface of the sprocket 7, stable running can be maintained.

  In this embodiment, by providing the metal roller 15 with the through hole 18 reaching the support shaft 11, the lubricating oil is injected between the metal roller 15 and the support shaft 11 through the through hole 18, thereby causing the metal roller 15 to move. It can be rotated smoothly. As a result, the metal roller 15 can smoothly engage with the engagement groove 24 of the sprocket 7.

  In this embodiment, the case where the present invention is applied to an escalator is shown, but the present invention can be applied to a moving sidewalk or the like.

1 is an overall schematic configuration diagram of an escalator according to an embodiment of the present invention. The partial top view of the conveyor chain which concerns on embodiment of this invention. The C section enlarged view of FIG. AA sectional view taken on the line AA of FIG. FIG. 3 is a sectional view taken along line BB in FIG. 1. The D section enlarged view of FIG. The side view which shows the biting state of the conveyor chain and sprocket which concern on embodiment of this invention. The whole schematic block diagram of the conventional escalator. The partial top view of the conventional conveyor chain. EE sectional view taken on the line of FIG. FF sectional view taken on the line of FIG. The G section enlarged view of FIG. The side view which shows the biting state of the conventional conveyor chain and a sprocket.

Explanation of symbols

1 Escalator (man conveyor)
5 Step 6 Conveyor Chain 7 Sprocket 11 Supporting Shaft 12 Front Wheel Roller 13 Auxiliary Roller 14 Link Plate 15 Metal Roller 18 Through Hole 24 Biting Groove 25 Rubber Bush (Buffering Member)
26 Tilt prevention wall

Claims (4)

A plurality of first rollers supported in each step, a second roller disposed therebetween, and a link plate that connects the rollers are configured endlessly, and the first roller and the second roller Conveyor chains each provided with a third roller having a diameter smaller than each roller diameter outside the link plate of the rollers,
A sprocket that is disposed at a reversal portion of the conveyor chain, and that causes the third roller to sequentially engage with the biting groove to exert a moving force on the conveyor chain;
A man conveyor characterized by comprising:   The man conveyor according to claim 1, wherein a buffer member is provided at the bottom of each meshing groove of the sprocket.   The man conveyor according to claim 1 or 2, wherein a tilt prevention protrusion wall for preventing the second roller from tilting is provided on an inner side surface of the sprocket.   The man conveyor according to any one of claims 1 to 3, wherein a through-hole reaching the support shaft is provided in the third roller.

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