JP4737819B2 - Man conveyor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a man conveyor such as an escalator or a moving sidewalk that transports a user through a plurality of steps connected endlessly, and particularly to a man conveyor provided with a handrail belt driving device that presses and drives a handrail belt with a roller.
[0002]
[Prior art]
FIG. 7 shows the vicinity of the upper floor of the escalator as an example of the man conveyor 51. The plurality of steps 52 of the man conveyor 51 are connected endlessly by a step chain 53 and circulate along the guide rail 54. A balustrade panel 55 is erected on both sides of the step 52, and handrail belts 56 are loosely fitted to the edges of the balustrade panel 55. These handrail belts 56 are circulated and moved in the same direction as step 52 by handrail belt driving devices 57 respectively provided below the balustrade panel 55.
[0003]
The step chain 53 is wound around step sprockets 58 provided at both ends of the man conveyor 51. A drive sprocket 60 is fixed to the same rotary shaft 59 as the step sprocket 58, and a drive chain 63 is wound around an output sprocket 62 provided in a drive device 61 as a power source. As a result, the power of the driving device 61 is transmitted from the output sprocket 62 to the step chain 53 via the driving sprocket 60 and the step sprocket 58, and the step 52 is circulated and moved.
[0004]
A transmission sprocket 64 for transmitting power to the handrail belt driving device 57 is attached to a rotating shaft 59 to which the step sprocket 58 and the driving sprocket 60 are attached, and a driving force transmission chain 65 is wound around the rotating shaft 59. The driving force transmission chain 65 transmits power to the relay idler 66. A handrail belt drive chain 67 is wound around the relay idler 66, and a tensioned state is maintained by the tensioner 68. The handrail belt drive chain 67 is wound around a power input sprocket 69 provided in the handrail belt drive device 57 and rotates it. As shown in FIG. 8, a cylindrical drive roller 71 is fixed to the power input shaft 70 to which the power input sprocket 69 is fixed, and rotates together with the power input sprocket 69. A pressure roller 72 is disposed on the opposite side of the driving roller 71 via a handrail belt 56. The pressure roller 72 is attached to an intermediate portion of the pressure roller receiver 73. One end of the pressure contact roller receiver 73 is pivotally attached to the frame 75 of the handrail belt driving device 57 by a pivot 74 parallel to the pressure contact roller 72, and the other end of the pressure contact roller receiver 73 is a bracket 76 attached to the frame 75. And a pressure contact force adjusting mechanism 78 having a pressure contact spring 77 between them. The pressure contact force adjusting mechanism 78 can adjust the pressure contact force between the handrail belt 56 and the driving roller 71.
[0005]
Further, a skirt guard panel 79 is disposed between the side portion of the step 52 and the balustrade panel 55, and an inner deck plate 80 is disposed from the upper end 79 a of the skirt guard panel 79 to the lower end portion 55 a of the balustrade panel 55. However, the handrail belt drive device 57 is covered.
[0006]
In the pussy bear 51 configured as described above, the driving device 61 causes the step 52 and the handrail belt 56 to move in the same direction, and the moving speed of the step 52 and the moving speed of the handrail belt 56 become the same speed. As described above, the number of teeth of each sprocket (output sprocket 62, drive sprocket 60, step sprocket 58, transmission sprocket 64, relay idler 66, power input sprocket 69) and the diameter of the drive roller 71 are determined.
[0007]
[Problems to be solved by the invention]
Ideally, the handrail belt of the man conveyor moves at the same speed as the step on which the user is riding. For this reason, the power source of the step and the handrail belt is made the same drive device, and they are mechanically synchronized via a chain or sprocket whose number of teeth and diameter are determined so as to have the same moving speed.
[0008]
Strictly speaking, however, it is caused by the difference in accumulation of slight differences such as the manufacturing tolerance of each sprocket and chain, the manufacturing tolerance of the outer diameter of the handrail belt drive roller, and the aging caused by slippage and wear of the handrail belt and handrail belt drive roller. There may be a difference between the moving speed of the step and the handrail belt due to a difference in position.
[0009]
In particular, when the travel of the man conveyor becomes longer, the shift due to the difference in the moving speed of the step and the handrail belt appears remarkably. In some cases, a user who grabs the handrail belt and rides on a step may lose his posture and cause a fall accident.
[0010]
Then, an object of this invention is to provide the man conveyor which can adjust the moving speed of a handrail belt easily with respect to the moving speed of a step.
[0011]
[Means for Solving the Problems]
The present invention includes a plurality of steps connected endlessly and circulated, a balustrade panel erected on both sides of the step, a handrail belt that circulates and moves the upper part of the balustrade panel in the same direction as the steps, and the handrail belt A man conveyor provided with a handrail belt driving device for driving the vehicle is assumed.
[0012]
The handrail belt driving device includes a tapered roller that rotates in conjunction with the power source and transmits power for driving the handrail belt so that the difference between the speed of the step and the handrail belt can be easily adjusted. Further, the roller is supported so as to be displaceable in the axial direction, and the roller is displaced in the axial direction, so that the moving speed of the handrail belt can be adjusted. At this time, the tapered roller is a driving roller that is in rolling contact with the handrail belt.
[0013]
In addition, handrail belt positioning means is provided that suppresses the force in the width direction applied to the handrail belt by the axial displacement of the drive roller. As the positioning means for the handrail belt, place the rolling contact pressing roller handrail belt side diameter of the smaller side of the drive roller.
[0014]
As another means for adjusting the moving speed of the handrail belt, a tapered roller is brought into rolling contact with a transmission roller provided in conjunction with a driving roller that is brought into rolling contact with the handrail belt. At this time, the transmission roller is provided with an inter-axis distance correction function that enables displacement in a direction perpendicular to the axial direction in accordance with the axial displacement of the tapered roller.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of the present invention will be described with reference to FIGS. 1 and 2. A handrail belt drive device 1 for a man conveyor shown in FIG. 1 includes a plurality of drive rollers 2 arranged side by side and the same number of pressure contact rollers 3 as the drive rollers 2. The handrail belt 4 is circulated and moved by pressing at 3. In this embodiment, the driving roller 2 is disposed below the handrail belt 4 and the pressure roller 3 is disposed above the handrail belt 4. As shown in FIG. 2, the drive roller 2 has a tapered peripheral surface and is supported by a power input shaft 6 to which a power input sprocket 5 is fixed. The drive roller 2 is mounted in a state in which it cannot rotate with respect to the power input shaft 6 and can be displaced in the axial direction, and a bolt T as a fixing means for preventing the axial displacement is provided. I have.
[0016]
The configuration of the fixing means is merely an example, and as a fixing means for preventing the displacement of the driving roller 2 in the axial direction, a screw thread is provided on the power input shaft 6 and a screw groove is provided on the driving roller 2 to each other. It may be a structure in which a nut for preventing rotation is attached from both sides of the drive roller 2, and the method is not limited to the description.
[0017]
A handrail belt drive chain 7 is wound around the power input sprocket 5. The power input shafts 6 extending from both side surfaces of the power input sprocket 5 are pivotally supported by a flat frame 8 as shown in FIG. On the other hand, the pressure roller 3 is attached to an intermediate portion of the pressure roller receiver 9 as shown in FIG. One end 9 a of the pressure roller receiver 9 is pivotally attached to a first pivot 10 fixed to the frame 8. Further, as shown in FIG. 2, the pressure contact roller receiver 9 is rotated about the first pivot 10 by the pressure contact spring 12 between the other end 9 b of the pressure contact roller receiver 9 and the bracket 11 attached to the frame 8. A pressure contact force adjusting mechanism 13 for pressing the pressure roller 3 against the handrail belt 4 is provided to adjust the pressure contact force between the driving roller 2 and the handrail belt 4. A pressing roller 14 that is in rolling contact with the side surface 4a of the handrail belt 4 is attached to the front end portion of the bracket 11 as a handrail belt positioning means, and the shift in the width direction of the handrail belt due to the taper shape of the driving roller 2 is attached. Is preventing. Since the other configuration of the man conveyor and the attachment position of the handrail belt driving device 1 to the man conveyor are the same as the conventional one, the description thereof is omitted.
[0018]
The operation of the man conveyor configured as described above will be described. When the power input sprocket 5 is rotated by the handrail belt drive chain 7, the drive roller 2 fixed to the same power input shaft 6 is also rotated. At this time, since the handrail belt 4 is pressed against the driving roller 2 by the pressure roller 3, the handrail belt 4 is circulated and moved without slipping. The number of teeth of each sprocket and the handrail belt 4 and the driving roller 2 are adjusted so that the speed of the handrail belt 4 is the same as the moving speed of a step (not shown) that is circulated and moved by a driving device (not shown). Roller diameter d _{1 of the} pressure contact portion 15 Determined by. Since the driving roller 2 has a tapered shape, the moving speed of the handrail belt 4 can be adjusted steplessly by moving in the axial direction of the power input shaft 6 and displacing the rolling contact portion with the handrail belt 4. Is possible.
[0019]
Next, a method for adjusting the moving speed of the handrail belt 4 to the moving speed of the step will be described. When the moving speed of the handrail belt 4 is slower than the moving speed of the step, the driving roller 2 is displaced in the arrow A direction. That is, the roller diameter d ₁ of the press contact portion 15. Larger roller diameter d ₂ The driving roller 2 is moved so that the pressure contact portion 16 is in rolling contact with the handrail belt 4. Thereby, the feed length of the handrail belt 4 per one rotation of the driving roller 2 is long, that is, the moving speed of the handrail belt 4 is increased, and can be adjusted to the moving speed of the step. Similarly, when the moving speed of the handrail belt 4 is faster than the moving speed of the step, the moving speed of the handrail belt 4 is decreased by displacing the driving roller 2 in the direction opposite to the arrow A, and the moving speed of the step Can be adapted to
[0020]
Therefore, according to the man conveyor of the first embodiment, it is caused by an error due to manufacturing tolerances of the drive roller 2 and each sprocket, a minute shift of the sprocket rotation ratio, a slip of the handrail belt 4 and the drive roller 2, and the like. Since the shift in the moving speed between the step and the handrail belt 4 can be easily adjusted, the user can be transported safely.
[0021]
Next, a second embodiment of the present invention will be described with reference to FIGS. The handrail belt drive device 21 shown in FIG. 3 has a tapered first drive roller 22 whose diameter gradually increases toward the power input sprocket 5, and a second drive roller 22 having a taper shape opposite to the first drive roller 22. The drive roller 23 is provided. A pressure roller 3 is provided on the opposite side of each drive roller 22, 23 that separates the handrail belt 4. The handrail belt 4 is pressed against the drive rollers 22, 23 by the pressure roller 3, and the handrail belt 4 is circulated and moved. Let The drive rollers 22 and 23 are supported by a power input shaft 6 to which a power input sprocket 5 is attached. The drive rollers 22 and 23 are attached to a state in which the drive rollers 22 and 23 cannot rotate with respect to the power input shaft 6 and can be displaced in the axial direction, and serve as fixing means for preventing the axial displacement. A bolt T is provided. The configuration of this fixing means is merely an example as in the first embodiment, and a screw thread is provided on the power input shaft 6 as a fixing means for preventing the displacement of the drive rollers 22 and 23 in the axial direction. The drive rollers 22 and 23 may be provided with screw grooves and screwed together so that non-rotating nuts are attached from both sides of the drive rollers 22 and 23, and the method is not limited to the description.
[0022]
Further, the second drive roller 23 functions as a drive roller, and is disposed in rolling contact with the handrail belt 4 and can be displaced symmetrically via the handrail belt 4 with respect to the displacement of the first drive roller 22. Functions as a counter roller. That is, since the second drive roller 23 has a tapered shape opposite to the first drive roller 22, a second force is applied to the handrail belt 4 by the axial displacement of the first drive roller 22. The axial displacement of the driving roller 23 cancels out with the force in the width direction applied to the handrail belt 4, and the handrail belt 4 is positioned at a desired position. Therefore, the pressing roller 14 shown in the first embodiment is not necessary.
[0023]
Since other configurations are the same as those of the first embodiment, the same components are denoted by the same reference numerals, and the description thereof is omitted. Further, since the other configurations of the man conveyor and the attachment position of the handrail belt driving device 21 to the man conveyor are the same as those in the prior art, the description thereof is omitted as in the first embodiment.
[0024]
In the man conveyor of the second embodiment configured as described above, the difference between the moving speed of the step and the moving speed of the handrail belt 4 is adjusted to be the same speed with respect to the handrail belt 4. Are displaced symmetrically in the axial direction of the power input shaft 6 on which the first driving roller 22 and the second driving roller 23 are respectively supported. That is, when the moving speed of the handrail belt 4 is slower than the moving speed of the step, the first driving roller 22 is displaced in the direction of the arrow B and the second driving roller 23 is opposite to the arrow B by the same amount. Displace in the direction of. Thereby, according to the same principle as 1st Embodiment, the moving speed of the handrail belt 4 becomes quick, and it can match with the moving speed of a step. When the moving speed of the handrail belt 4 is faster than the moving speed of the step, the first driving roller 22 is displaced in the direction opposite to the arrow B, and the second driving roller 23 is moved by the same amount as the arrow B. By moving in the direction, the moving speed of the handrail belt 4 can be reduced, and the moving speed of the handrail belt 4 can be matched to the moving speed of the step. Further, since the first drive roller 22 and the second drive row 23 are tapered, the rolling contact portion with the handrail belt 4 is displaced by moving in the axial direction of the power input shaft 6 so that the handrail belt 4 is displaced. It is possible to adjust the moving speed of steplessly.
[0025]
Therefore, the man conveyor of the second embodiment can obtain the same effect as the first man conveyor. Further, the force applied in the width direction of the handrail belt 4 due to the tapered shape of the driving rollers 22 and 23 by the first driving roller 22 and the second driving roller 23 having a tapered shape opposite to the tapered shape. Since the handrail belt 4 can be positioned at a desired position, the pressing roller 14 of the first embodiment is unnecessary, and the number of parts can be reduced and the space can be saved.
[0026]
Next, a third embodiment of the present invention will be described with reference to FIGS. The handrail belt drive device 31 shown in FIG. 5 includes a tapered first transmission roller 32, a drum-shaped second transmission roller 33, and a cylindrical drive roller 34 as shown in FIG. . The first transmission roller 32 is supported by the power input shaft 6 to which the power input sprocket 5 is fixed. The first transmission roller 32 is mounted in a state in which it cannot rotate with respect to the power input shaft 6 and can be displaced in the axial direction, and a bolt as a fixing means for preventing the axial displacement. T is provided. The configuration of the fixing means is merely an example. As a fixing means for preventing the displacement of the first transmission roller 32 in the axial direction, the power input shaft 6 is provided with a thread, A structure may be adopted in which screw grooves are provided and screwed to each other and nuts for preventing rotation are attached from both sides of the first transmission roller 32, and the method is not limited to the description.
[0027]
The second transmission roller 33 has one end rotatably attached to the second pivot 35 and can be displaced vertically, that is, the transmission roller receiver 36 can be displaced in a direction perpendicular to the axial direction of the transmission roller 33. It is attached to the end and is in rolling contact with the first transmission roller 32. That is, the transmission roller receiver 36 has an inter-axis distance correction function that can follow the first transmission roller 32 and the second transmission roller 33 while maintaining the pressure contact force even when the first transmission roller 32 is displaced. have.
[0028]
The drive roller 34 is fixed to the rotation shaft 33 a of the second transmission roller 33 extending from the transmission roller receiver 36, and interlocks with the second transmission roller 33. A pressure roller 3 that presses the handrail belt 4 against the drive roller 34 is provided on the opposite side of the drive roller 34 across the handrail belt 4. In this embodiment, the drive roller 34 is disposed on the upper side of the handrail belt 4, and the pressure contact roller 3 is disposed on the lower side of the handrail belt 4.
[0029]
Since other configurations are the same as those of the first and second embodiments, the same components are denoted by the same reference numerals as those of the first embodiment, and description thereof is omitted. Further, since the configuration of the man conveyor other than the handrail belt driving device 31 is the same as the conventional one, the description thereof is omitted as in the case of the first embodiment.
[0030]
In the man conveyor according to the third embodiment configured as described above, when the power input sprocket 5 is rotated by the handrail belt drive chain 7, the first transmission roller 32 fixed to the same power input shaft 6 is also rotated. . Then, power is transmitted to the second transmission roller 33 that is in rolling contact with the first transmission roller 32, and the driving roller 34 fixed coaxially with the second transmission roller 33 rotates to drive the handrail belt 4. The pressure contact force between the first transmission roller 32 and the second transmission roller 33, and the drive roller 34 and the handrail belt 4 is applied to the other end 9b of the pressure contact roller receiver 9 and the frame 8 where the pressure contact roller 3 is attached to the center portion. It is maintained by a pressing force adjusting mechanism 13 provided between the fixed brackets 11.
[0031]
The moving speed of the handrail belt 4 is determined by the ratio of the number of teeth of each sprocket and the diameter of each roller. Further, since the first transmission roller 32 has a tapered shape, the moving speed of the handrail belt 4 can be adjusted steplessly by displacing the first transmission roller 32 in the axial direction of the power input shaft 6. Is possible. Therefore, the moving speed of the handrail belt 4 can be matched to the moving speed of the step.
[0032]
When the moving speed of the handrail belt 4 is slower than the moving speed of the step, the first transmission roller 32 is displaced in the direction of arrow C shown in FIG. That is, the roller diameter d ₃ of the press contact portion 37. Larger roller diameter d ₄ The first transmission roller 32 is moved so that the rolling contact portion of the first transmission roller 32 and the second transmission roller 33 moves to the pressure contact portion 38, and the first transmission roller 32 per one rotation. Increase the circumference. Thereby, the rotation speed of the 2nd transmission roller 33, ie, the rotation speed of the drive roller 34, becomes large, and can adjust the moving speed of the handrail belt 4 to the moving speed of a step.
[0033]
Similarly, when the moving speed of the handrail belt 4 is faster than the moving speed of the step, the moving speed of the handrail belt 4 is decreased by displacing the first transmission roller 32 in the direction opposite to the arrow C in FIG. The moving speed of the handrail belt 4 can be matched with the moving speed of the step.
[0034]
One end of the transmission roller receiver 36 to which the second transmission roller 33 and the driving roller 34 are attached is rotatably attached to the second pivot 35 and the pressure roller 3 is attached to the center portion. One end 9a of the press contact roller receiver 9 is also rotatably attached to the first pivot shaft 10, and is always pressed in the direction of arrow P in FIG. Therefore, even if the roller diameter of the rolling contact portion is changed by displacing the first transmission roller 32, the transmission roller receiver 36 and the pressure roller receiver 9 are rotated according to the change, and the rollers 3, 32 are rotated. , 33, 34 can always be in contact with each other.
[0035]
As described above, according to the man conveyor of the third embodiment, the same effect as the man conveyor of the first and second embodiments can be obtained. Further, the driving roller 34 and the pressure roller 3 that are in rolling contact with the handrail belt 4 have a cylindrical shape, and the handrail belt may not be twisted or displaced in the width direction.
[0036]
In addition, since the second transmission roller 33 has a drum shape, the rolling contact portion with the first transmission roller 32 presses the contact surface perpendicularly to each other, so that power transmission loss is reduced. Less.
[0037]
【The invention's effect】
According to the present invention, the difference in moving speed between the step and the handrail belt can be easily caused by the error due to the manufacturing tolerance of the drive roller and each sprocket, the slight deviation of the sprocket rotation ratio, the slip of the handrail belt and the drive roller, etc. Since it can adjust, it can be set as the man conveyor which can transport a user safely.
[Brief description of the drawings]
FIG. 1 is a diagram showing a handrail belt driving device for a man conveyor according to a first embodiment of the present invention.
FIG. 2 is a diagram showing a handrail belt driving device viewed from the direction F2 in FIG.
FIG. 3 is a diagram showing a handrail belt driving device for a man conveyor according to a second embodiment of the present invention.
4 is a diagram showing a handrail belt driving device viewed from the direction F4 in FIG. 3;
FIG. 5 is a view showing a handrail belt driving device for a man conveyor according to a third embodiment of the present invention.
6 is a diagram showing a handrail belt driving device viewed from the direction F6 in FIG. 5;
FIG. 7 is a sectional view of an upper floor portion of a conventional escalator.
FIG. 8 is a side view of a conventional handrail belt drive device viewed from the direction F7 in FIG.
[Explanation of symbols]
1,21,31 ... handrail belt drive device 2 ... drive roller (tapered roller)
4 ... handrail belt 6 ... power input shaft 14 ... pressing roller (handrail belt positioning means)
22: First driving roller (tapered roller)
23. Second drive roller (opposing roller, handrail belt positioning means)
32. First transmission roller (tapered roller)
34 ... (Rolling contact with handrail belt) Drive roller 35 ... Second pivot (interaxial distance correction function)
36 ... Transmission roller receiver (shaft distance correction function)
51 ... Man conveyor 52 ... Step 55 ... Parapet panel

Claims (2)

A plurality of steps connected endlessly and circulated, a balustrade panel erected on both sides of the step, a handrail belt that circulates in the same direction as the step along the outer periphery of the balustrade panel, and the handrail belt In a man conveyor provided with a handrail belt driving device for driving
The handrail belt drive device includes a drive roller that rotates in conjunction with a power source and is in contact with the handrail belt as a tapered roller that transmits power for driving the handrail belt, and the drive roller is displaced in the axial direction thereof. capable supported, Ri tare to allow adjustment of the moving speed of the handrail belt by axial displacement of the drive roller,
As a handrail belt positioning means that suppresses the force in the width direction applied to the handrail belt by the displacement of the drive roller in the axial direction, a pressing roller that is in rolling contact with the side surface of the handrail belt on the side where the diameter of the drive roller is small is disposed. A man conveyor characterized by the above.   A plurality of steps connected endlessly and circulated, a balustrade panel erected on both sides of the step, a handrail belt that circulates in the same direction as the step along the outer periphery of the balustrade panel, and the handrail belt In a man conveyor provided with a handrail belt driving device for driving
  The handrail belt driving device includes a tapered roller that transmits power for driving the handrail belt by rotating in conjunction with a power source, and the roller is supported so as to be displaceable in the axial direction thereof. It is possible to adjust the moving speed of the handrail belt by the displacement of
  The tapered roller is in rolling contact with a transmission roller provided in conjunction with a driving roller that is in rolling contact with the handrail belt,
  The transmission roller has an inter-axis distance correction function that enables displacement in a direction perpendicular to the axial direction according to the axial displacement of the tapered roller.
A man conveyor characterized by that.

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