JP2011126612A - Driving device for passenger conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a driving device for a passenger conveyor capable of suppressing damage to a vibration-proof material arranged at a footstep side of a machine bed, wearing/deterioration of a drive chain caused by large rotation/displacement of the machine bed and dropping off of the drive chain even when excessive force is applied to the machine bed than the drive chain. <P>SOLUTION: The driving device for the passenger conveyor includes a motor for generating drive force of the passenger conveyor; a speed-reducer 14 for outputting the drive force output from the motor after increasing it; the machine bed 18 fixed to a truss of the passenger conveyor and mounted with the motor and the speed-reducer 14; the vibration-proof material 40 arranged between the machine bed 18 and the truss of the passenger conveyor; and an abutment part 44 for suppressing further displacement by abutment after the machine bed 18 is displaced toward a drive sprocket for circulating/moving a conveyor chain of the passenger conveyor while deforming the vibration-proof material 40 by a predetermined amount. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a drive device for passenger conveyors such as escalators and moving walkways.

  As shown in FIG. 11, the passenger conveyor drive device 100 includes a motor 102 that generates a driving force for the passenger conveyor, a speed reducer 104 that increases the driving force output from the motor 102, and an output of the passenger conveyor. A machine bed 108 that is fixed to the truss 106 and on which the motor 102 and the speed reducer 104 are mounted is provided, and the driving force output from the speed reducer 104 is transmitted to the driving sprocket 114 that circulates and moves the steps 112 via the driving chain 110. Is done.

  Further, in the driving device 100, there is provided a position adjusting mechanism 120 composed of bolts and nuts provided across a bottom cross beam 116 spanned in the width direction at the bottom of the truss 106 and a bracket 109 fixed to the step side of the machine bed 108. Thus, the machine bed 108 is moved in the front-rear direction corresponding to the moving direction of the step 112, thereby making it possible to adjust the tension and elongation of the drive chain 110.

  By the way, in order to prevent the vibration of the motor 102 and the speed reducer 104 from being transmitted from the machine bed 108 to the truss 106, the entire passenger conveyor vibrates and deteriorates the riding comfort and generates abnormal noise. The machine bed 108 is fixed to the truss 106 with a vibration isolating material such as a rubber-like elastic body interposed between the truss 106, and the position adjusting mechanism 120 also has a vibration isolating material as shown in FIG. 122 is interposed and connected to the bracket 109 (see, for example, Patent Document 1 below).

  When the driving device 100 as described above drives the passenger conveyor, the speed reducer 104 is pulled in the direction of the driving sprocket 114 by the tension of the driving chain 110, and the machine bed 108 has a displacement force toward the step 112 of the passenger conveyor. The acting force is transmitted to the position adjusting mechanism 120 disposed on the step side of the machine bed 108.

  Since the tension of the drive chain 110 concentrates on the position adjustment mechanism 120 in this way, when the load becomes high, such as when the passengers of the passenger conveyor rush, the machine bed is interposed between the position adjustment mechanism 120 and the bracket 109. There is a problem that an excessive force may act on the vibration isolator 122 arranged on the step side of 108 to damage the vibration isolator 122.

  Further, when the drive chain 110 is arranged close to one side in the width direction of the passenger conveyor, the machine bed 108 is rotationally displaced about the vertical axis while deforming the vibration isolator 122 by the tension of the drive chain 110. Therefore, the output shaft 104a of the speed reducer 104 is inclined in a C shape in a plan view with respect to the rotation shaft 114a of the drive sprocket 114, and the drive chain 110 is liable to wear and deteriorate. 110 is easy to drop off, which is a problem.

Shokai 57-165660

  The present invention has been made in consideration of the above-mentioned problems. While the machine bed is elastically connected to the truss via a vibration isolator, the tension of the drive chain is large as in the high load state of the passenger conveyor. Even if an excessive force is applied to the machine bed, the vibration isolator placed on the machine bed step side may be damaged, or the drive chain may be worn away or the drive chain may fall off due to large rotational displacement of the machine bed. It is an object of the present invention to provide a passenger conveyor drive device that can be suppressed.

  A driving device for a passenger conveyor according to the present invention includes a motor that generates driving force for the passenger conveyor, a speed reducer that outputs the driving force output from the motor, and a motor that is fixed to the truss of the passenger conveyor. And a machine bed on which the speed reducer is mounted, a vibration isolator disposed between the machine bed and a truss of the passenger conveyor, and toward the passenger conveyor step while deforming the vibration isolator And a contact portion that restricts further displacement of the machine bed after being displaced by a predetermined amount.

  In the passenger conveyor drive device according to the present invention, the above-described configuration allows the machine bed step side even when the drive chain tension is large and excessive force acts on the machine bed as in the high load state of the passenger conveyor. It is possible to suppress the deterioration of the wear of the drive chain and the drop off of the drive chain due to damage to the vibration isolator disposed on the machine bed or a large rotational displacement of the machine bed.

It is a side view which shows the drive device of the passenger conveyor which concerns on 1st Embodiment of this invention. It is a top view of the drive device of a passenger conveyor shown in FIG. It is a figure which expands and shows the principal part of FIG. It is AA sectional drawing of FIG. It is a figure which expands and shows the principal part of FIG. 2 in the state which the vibration isolator deform | transformed. It is a principal part enlarged plan view of the drive device of the passenger conveyor which concerns on 2nd Embodiment of this invention. It is a principal part enlarged plan view of the drive device of the passenger conveyor which concerns on 3rd Embodiment of this invention. It is a principal part enlarged plan view of the passenger conveyor drive device concerning a 4th embodiment of the present invention. It is a principal part enlarged plan view of the drive device of the passenger conveyor which concerns on 5th Embodiment of this invention. It is a principal part enlarged side view of the drive device of the passenger conveyor which concerns on the example of a change of 5 embodiment of this invention. It is a side view which shows the drive device of the conventional passenger conveyor. It is a top view which expands and shows the principal part of the drive device of the conventional passenger conveyor.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the passenger conveyor drive device 10 in the present embodiment is a drive device that drives an escalator installed inclined across the upper and lower floors of a building. It is arrange | positioned inside the machine room 11 provided in the part.

  The drive device 10 includes a motor 12, a speed reducer 14, and a machine bed 18 on which the motor 12 and the speed reducer 14 are mounted.

  The motor 12 generates a driving force for the passenger conveyor, and its rotating shaft 12 a is connected to the input shaft 14 a of the speed reducer 14 by the coupling 13 and outputs the driving force of the motor 12 to the speed reducer 14. The speed reducer 14 increases the driving force output from the motor 12 and outputs it from the output shaft 14 b of the speed reducer 14. The output shaft 14b of the speed reducer 14 protrudes toward one side in the width direction W of the passenger conveyor, and a small sprocket 15 is connected to the tip of the output shaft 14b. That is, in the present embodiment, the small sprocket 15 is arranged close to one side in the width direction W of the passenger conveyor.

  A driving chain 20 is wound around the small sprocket 15 and the driving force output from the speed reducer 14 is transmitted to the driving sprocket 24. Thereby, the passenger boarded the passenger conveyor is conveyed by circulatingly moving the endless conveyor chain 19 to which the steps 22 are connected.

  The machine bed 18 is a plate-like member disposed at the bottom of the machine room 11, and the position of the machine bed 18 is set in the front-rear direction L corresponding to the moving direction of the step 22 by the position adjusting mechanism 30 attached to the truss 16. Adjustable.

  Specifically, as shown in FIG. 3, the position adjustment mechanism 30 includes a bolt-shaped attachment member 32, a nut 34 that is screwed to the attachment member 32, and a pair of supports disposed at the distal end portion of the attachment member 32. Plates 36 and 38 and a pair of vibration isolating materials 40 and 42 are provided.

  At the position where the step reversing part 25 provided with the drive sprocket 24 is separated from the machine room 11, a substantially L-shaped bottom cross beam 31 rising upward from the bottom of the machine room 11 is bridged in the width direction W. The mounting member 32 protrudes toward the machine bed 18 through the bottom horizontal beam 31. The attachment member 32 is provided so that the amount of protrusion toward the machine bed 18 can be adjusted, and is fixed to the bottom horizontal beam 31 by a nut 34.

  A pair of support plates 36 and 38 are inserted into the tip of the attachment member 32 on the machine bed side, and a bracket 26 fixed to the front end 18a of the machine bed 18 facing the bottom horizontal beam 31 is inserted. Plate-shaped vibration isolating materials 40 and 42 made of a rubber-like elastic body and contact portions 44 and 46 are attached to the pair of support plates 36 and 38, respectively.

  More specifically, the pair of support plates 36 and 38 are opposed to each other with the bracket 26 interposed therebetween at a predetermined interval. A front anti-vibration member 40 is fixed to a front surface 36a facing the bracket 26 on the front support plate 36 disposed on the bottom horizontal beam 31 side of the pair of support plates 36 and 38, and disposed on the machine bed 18 side. A rear vibration isolator 42 is fixed to the rear support plate 38 on the surface 38 a facing the bracket 26.

  The pair of support plates 36 and 38 are fixed to the predetermined position of the mounting member 32 by the fixing nuts 50 and 52 so that the front vibration isolator 40 and the rear vibration isolator 42 sandwich the bracket 26. As a result, the position adjusting mechanism 30 elastically connects and fixes the machine bed 18 to the machine room 11 while enabling the position adjustment in the front-rear direction L. In the present embodiment, the front vibration isolator 40 is thicker than the rear vibration isolator 42.

  A contact portion 44 projects from the facing surface 36 a of the front support plate 36 toward the bracket 26. The contact portion 44 is made of a metal material such as stainless steel, and is provided on the opposing surface 36a of the front support plate 36 with a gap 48 between the front vibration isolator 40 as shown in FIGS. The protrusion amount P1 is set to be smaller than the thickness R1 of the front vibration isolator 40.

  In addition, a contact portion 46 projects from the opposing surface 38 a of the rear support plate 38 toward the bracket 26. The contact portion 46 is made of a metal material such as stainless steel, and is provided on the facing surface 36 a of the front support plate 36 with a gap 49 between the contact portion 46 and the vibration isolation material 40. The thickness is set to be smaller than R2.

  In the driving apparatus 10 having such a configuration, when the motor 12 is driven, the driving force of the motor 12 is increased by the speed reducer 14 and the driving sprocket 24 via the driving chain 20 from the small sprocket 15 connected to the output shaft 14b. Is transmitted to.

  At that time, a tension of a magnitude corresponding to the load acting on the drive sprocket 24 is applied to the small sprocket 15 from the drive chain 20, and the drive device 10 is pulled toward the step 22. A force that is displaced toward 22 (toward the front indicated by the arrow L1) acts. When such a force toward the step 22 acts on the machine bed 18, the machine bed 18 faces the step 22 while the bracket 26 crushes and deforms the front vibration isolator 40 of the position adjustment mechanism 30 as shown in FIG. 5. To displace. Then, when the bracket 26 comes into contact with the contact portion 44 when it is displaced by a predetermined amount corresponding to the difference between the thickness R1 of the front vibration isolator 40 and the protrusion amount P1 of the contact portion 44, the front L1 of the machine bed 18 is reached. Regulate further displacement to.

  Further, when a force is applied to the drive device 10 in a direction away from the step 22 (rearward indicated by an arrow L2), the bracket 26 crushes and deforms the rear vibration isolating material 42 of the position adjusting mechanism 30 to deform the machine bed 18. Is displaced rearward L2 so as to be separated from the step 22. Then, when the bracket 26 comes into contact with the contact portion 46 at a predetermined amount corresponding to the difference between the thickness R2 of the rear vibration isolation material 42 and the protrusion amount P2 of the contact portion 46, the rear L2 of the machine bed 18 is obtained. Regulate further displacement to.

  As described above, in the driving apparatus 10 of the present embodiment, the position adjustment mechanism 30 that connects and fixes the machine bed 18 to the truss 16 so that the position of the machine bed 18 in the front-rear direction L can be adjusted. 40 and an abutting portion 44 that abuts after the machine bed 18 is displaced by a predetermined amount. Therefore, the driving device 10 can be elastically supported with respect to the truss 16, and when an excessive force is applied to the machine bed 18, the machine bed 18 comes into contact with the contact portion 44 and is further displaced. Can be prevented to prevent the front vibration isolator 40 from being damaged.

  Further, the small sprocket 15 is arranged close to one side in the width direction W of the passenger conveyor, and the vertical direction so that one side in the width direction W of the machine bed 18 is displaced toward the step 22 by the tension of the drive chain 20. Even if the machine bed 18 is rotationally displaced around the axis of the machine bed 18, the bracket 26 of the machine bed 18 abuts on the abutting portion 44 positioned forward in the direction of rotational displacement when the machine bed 18 is displaced by a predetermined amount. Does not keep rotating. Therefore, the machine bed 18 is not greatly rotated and displaced, the parallelism between the output shaft 14b of the speed reducer 14 and the rotation shaft of the drive sprocket 24 can be maintained with high accuracy, wear deterioration of the drive chain and the drive chain. Can be prevented from falling off.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG.

  The present embodiment is different from the drive device 10 of the first embodiment described above in that an adjustment mechanism that adjusts the position where the contact portion 44 contacts the bracket 26 is provided.

  Specifically, as shown in FIG. 6, the abutting portion 44 is composed of a bolt that is screwed into a screw hole 36 b provided in the front support plate 36, and the tip of the abutting portion 44 has a front vibration isolator 40. Is inserted into a perforation 40a communicating with a screw hole 36b provided in the front vibration isolator 40 so as to terminate inside.

  The abutment portion 44 is screwed back and forth with respect to the front support plate 36 so that the distance X from the front end of the abutment portion 44 to the contact surface 40b of the front vibration isolator 40 with the bracket 26 can be adjusted. Then, the contact portion 44 whose distance X is adjusted is fixed by a fixing nut 54.

  As described above, in the present embodiment, the tip of the abutting portion 44 terminates at a position deeper than the contact surface 40b of the front vibration isolator 40 by the distance X. When 18 is displaced forward L1 toward the step 22, the front vibration isolator 40 is crushed by the bracket 26 and elastically supports the machine bed 18. When the distance X from the contact surface 40b of the front vibration isolator 40 to the tip of the contact portion 44 is displaced, the bracket 26 comes into contact with the tip of the contact portion 44, thereby moving to the front L1 of the machine bed 18. Restrict further displacement of

  The contact portion 44 adjusts the distance X from the tip to the contact surface 40b of the front vibration isolator 40, so that the machine bed 18 is displaced in response to the tension from the drive chain 20, that is, in the front-rear direction L. It is possible to adjust the position in contact with the bracket 26 along the line.

  Similarly to the contact portion 44, the contact portion 46 includes a bolt that is screwed into a screw hole 38 b provided in the rear support plate 38, and the tip of the contact portion 46 is located inside the rear vibration isolation material 42. It is inserted into a hole 42a communicating with a screw hole 38b provided in the rear vibration isolator 42 so as to terminate.

  In addition, except the above-mentioned structure and effect, it is the same as that of 1st Embodiment, and detailed description is abbreviate | omitted.

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

  In the present embodiment, the first end 32a of the mounting member 32 forms the contact portion 44 that contacts the bracket 26 when the front vibration isolator 40 is crushed by receiving the tension of the drive chain 20. This is different from the driving device 10 of one embodiment.

  Specifically, as shown in FIG. 7, the bolt-shaped attachment member 32 is screwed into a screw hole 36 b provided in the front support plate 36, and the tip 32 a terminates inside the front vibration isolator 40. In this way, it is inserted into a perforation 40a communicating with a screw hole 36b provided in the front vibration isolator 40.

  The front end 32a of the mounting member 32 is screwed back and forth with respect to the front support plate 36 so that the distance Y to the contact surface 40b of the front vibration isolator 40 with the bracket 26 can be adjusted. The attachment member 32 whose distance Y has been adjusted is fixed by the fixing nut 50.

  As described above, in this embodiment, the tip 32a of the mounting member 32 terminates at a position that is deeper than the contact surface 40b of the front vibration isolator 40 by the distance Y. When 18 is displaced forward L1 toward the step 22, the front vibration isolator 40 is crushed by the bracket 26 and elastically supports the machine bed 18. When the distance Y from the contact surface 40b of the front vibration isolator 40 to the tip 32a of the mounting member 32 is displaced, the bracket 26 comes into contact with the tip 32a of the mounting member 32, thereby moving to the front L1 of the machine bed 18. Restrict further displacement of In other words, the tip 32a of the mounting member 32 functions as an abutting portion 44 that abuts after the machine bed 18 is displaced by the predetermined amount Y toward the front L1 and further restricts displacement to the front L1.

  Also in this embodiment, by adjusting the distance Y from the tip 32a of the mounting member 32 to the contact surface 40b of the front vibration isolator 40, the direction in which the machine bed 18 is displaced under the tension of the drive chain 20, That is, the position where the bracket 26 abuts along the front-rear direction L can be adjusted.

  Moreover, since the tip 32a of the mounting member 32 also serves as the contact portion 44, the number of parts can be reduced.

In addition, except the above-mentioned structure and effect, it is the same as that of 1st Embodiment, and detailed description is abbreviate | omitted.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to FIG.

  In the present embodiment, as shown in FIG. 8, the front support plate 36 is provided with a convex portion 56 projecting toward the bottom horizontal beam 31, and this convex portion 56 is in contact with the bottom horizontal beam 31. . Thus, in this embodiment, since the convex part 56 contact | abutted with the bottom part cross beam 31 is provided in the front support plate 36, it receives the tension | tensile_strength by the drive chain 20 and displaces toward the front L1 with respect to the machine bed 18. Even if a force is applied, the force can be distributed to the convex portion 56 without concentrating only on the mounting member 32, so that the mounting member 32 is less likely to buckle, and the position adjusting mechanism provided in the drive device 10. The durability of 30 can be improved. In addition, except the above-mentioned structure and effect, it is the same as that of 1st Embodiment, and detailed description is abbreviate | omitted.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described with reference to FIG.

  This embodiment is different from the drive device 10 of the first embodiment described above in that the contact portion 44 is fixed to the bottom cross beam 31.

  Specifically, as shown in FIG. 9, a bolt 58 passing through the bottom horizontal beam 31 protrudes from the bottom horizontal beam 31 toward the machine bed 18 and is connected and fixed to the bottom horizontal beam 31 by a fixing nut 57. The front end 58a of the bolt 58 is disposed at a position separated from the front end 18a of the machine bed 18 by a predetermined distance Z set to a size smaller than the thickness R1 of the front vibration isolator 40.

As described above, in the present embodiment, the tip 58a of the bolt 58 is disposed at a position separated from the front end 18a of the machine bed 18 by the predetermined distance Z. When 18 is displaced forward L1 toward the step 22, the front vibration isolator 40 is crushed by the bracket 26 and elastically supports the machine bed 18. And
When the machine bed 18 is displaced by the distance Z, it abuts on the tip 58a of the bolt 58, thereby restricting further displacement of the machine bed 18 toward the front L1. That is, the front end 58a of the bolt 58 fixed to the bottom cross beam 31 functions as a contact portion 44 that contacts the machine bed 18 after being displaced by the predetermined amount Z toward the front L1 and further restricts displacement to the front L1. To do.

  Also in this embodiment, by adjusting the distance Z from the tip 58a of the bolt 58 to the machine bed 18, in the direction in which the machine bed 18 is displaced under the tension of the drive chain 20, that is, the front-rear direction L. The position where the bracket 26 abuts along the bracket 26 can be adjusted, and when an excessive force is applied to the machine bed 18 from the drive chain 20, the force can be dispersed not only in the mounting member 32 but also in the bolt 58. Therefore, the attachment member 32 is less likely to buckle, and the durability of the position adjustment mechanism 30 provided in the drive device 10 can be improved.

  In addition, in the above-described embodiment, since the bolt 58 functioning as the contact portion 44 is fixed to the bottom cross beam 31, the degree of freedom of the arrangement position of the contact portion 44 is increased, and the design of the drive device 10 is easy. It becomes.

  In the above-described embodiment, the bolt 58 functioning as the contact portion 44 is provided so as to penetrate the bottom horizontal beam 31. For example, as shown in FIG. Bolts 58 may be provided on the portion 60.

  That is, the saddle portion 60 has a U-shaped cross section that opens downward, engages with a substantially L-shaped bottom horizontal beam 31 rising upward from the bottom of the machine chamber 11, and tightens the fixing bolt 61. As a result, the fixing bolt 61 comes into contact with the bottom cross beam 31 and is fixed. The bolt 58 is screwed into the bush portion 60 and fixed by a nut 62.

  In such a case, since it is not necessary to drill or weld a hole in the bottom horizontal beam 31 in order to provide the bolt 58 functioning as the contact portion 44 in the bottom horizontal beam 31, a firearm like an existing passenger conveyor or the like Even in an environment where the use of is not permitted, the bolt 58 as in the present embodiment can be easily provided on the bottom cross beam 31.

  In addition, except the above-mentioned structure and effect, it is the same as that of 1st Embodiment, and detailed description is abbreviate | omitted.

DESCRIPTION OF SYMBOLS 10 ... Drive device 11 ... Machine room 12 ... Motor 14 ... Reduction gear 14b ... Output shaft 15 ... Small sprocket 16 ... Truss 18 ... Machine bed 18a ... Front end 19 ... Conveyor chain 20 ... Drive chain 22 ... Step 24 ... Drive sprocket 25 ... Step reversing part 26 ... Bracket 30 ... Position adjustment mechanism 31 ... Bottom cross beam 32 ... Mounting member 36 ... Front support plate 38 ... Rear support plate 40 ... Front vibration isolation material 42 ... Rear vibration isolation material 44 ... Abutting part 46 ... Contact part

Claims (6)

  A motor that generates a driving force for a passenger conveyor, a speed reducer that outputs the driving force output from the motor, and a machine bed that is fixed to a truss of the passenger conveyor and on which the motor and the speed reducer are mounted And the anti-vibration material disposed between the machine bed and the truss of the passenger conveyor, and the machine bed toward the drive sprocket that circulates and moves the conveyor chain of the passenger conveyor while deforming the anti-vibration material. A driving device for a passenger conveyor, comprising: an abutting portion that abuts after a fixed displacement and regulates further displacement.   2. The passenger conveyor drive device according to claim 1, further comprising an adjustment mechanism that adjusts a position where the contact portion contacts the machine bed in a displacement direction of the machine bed. 3.   A mounting member projecting toward the machine bed from a bottom horizontal beam spanned in the width direction at the bottom of the truss, and a support plate provided at the tip of the mounting member and provided with the vibration-proof material 2. The passenger conveyor drive according to claim 1, wherein a tip of the mounting member penetrates the support plate and terminates in the vibration isolator to form the contact portion. apparatus.   An attachment member projecting toward the machine bed from a bottom cross beam spanned in the width direction at the bottom of the truss, and the vibration isolating material and the abutting portion disposed at the tip of the attachment member 4. The passenger conveyor drive device according to claim 1, further comprising: a support plate provided, wherein the support plate includes a convex portion that abuts against the bottom horizontal beam. 5.   2. The passenger conveyor drive device according to claim 1, wherein the abutting portion is fixed to a bottom cross beam spanned in a width direction at a bottom portion of the truss.   The passenger according to claim 5, further comprising a saddle portion engaged from above with a bottom horizontal beam spanned in the width direction at a bottom portion of the truss, wherein the abutting portion is provided on the saddle portion. Conveyor drive unit.

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