JP2006206251A - Passenger conveyor driving device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a passenger conveyor driving device capable of adjusting a distance between an output shaft of a motor and an input shaft of a reduction gear with a fine position adjustment margin of a pedestal and a motor and capable of maintaining position of the center of gravity of the reduction gear low. <P>SOLUTION: When an angle of a tangent a, which passes the periphery of both of an input side gear 17 and an output side gear 18 housed inside a casing 13, against the horizontal direction is α and an angle of inclination of a pedestal arrangement surface 41 of the top surface of the casing 13 against the horizontal direction is β, the reduction gear 12 is set so that α≤β. The passenger conveyor driving device is provided with this reduction gear 12, the pedestal 15 fixed onto the pedestal arrangement surface 14, the motor 16 fixed onto the pedestal 15, and a V-belt 6 wrapped between a pulley 30 of the motor 16 and an input side pulley 19 of the reduction gear 12. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a drive device for a man conveyor (passenger conveyor) in which a motor is installed on a top surface of a speed reducer via a pedestal.

  In order to save space, a drive device for a man conveyor has been proposed in which a motor is arranged on the upper surface of a reduction gear (see, for example, Patent Document 1). An example of this type of conventional driving apparatus is as shown in FIG.

  In FIG. 6, the drive device 100 includes a speed reducer 102 installed on a machine bed 101, and a motor 106 fixed to a base installation surface 104 of a casing 103 of the speed reducer 102 via a base 105.

  An input side gear 107, an output side gear 108, and the like are accommodated in the casing 103 of the speed reducer 102. The shafts 107 a and 18 a of the input side gear 107 and the output gear 108 protrude from the casing 103, respectively. An input-side pulley 110 and an output-side pulley 111 are fixed to the shafts 107a and 18a that protrude to the outside of the casing 103, respectively.

  Further, as shown in FIG. 7, oil seals 121 are provided on the shafts 107 a and 108 a protruding to the outside of the casing 103 at positions outside the bearings 120. This prevents oil from leaking outside the casing 103 along the shaft 109.

  Returning to FIG. 6, an inspection port (not shown) is provided on the upper surface of the casing 103. This inspection port (not shown) is closed by an inspection port closing lid 112. The inspection port closing lid 112 is fixed to the casing 103 with bolts 113. And the base mounting surface 104 of the upper surface of the casing 103 is formed as a horizontal surface.

  The pedestal 105 has a box shape and is fixed to the pedestal mounting surface 104 of the casing 103 with bolts (not shown) so as to cover the inspection port closing lid 112. The upper surface of the pedestal 105 is a motor mounting surface 105a, and the motor mounting surface 105a is formed to be inclined in the horizontal direction.

  The motor 106 is fixed on the inclined surface 105 a of the pedestal 105 with bolts 114. A pulley 115 is fixed to the output shaft 106 a of the motor 106. A V-belt 116 is hung between the pulley 115 of the motor 106 and the input-side pulley 110 of the speed reducer 102. The rotation of the motor 106 is transmitted to the speed reducer 102 via the V belt 116.

According to the driving device 100, since the motor mounting surface 105a of the pedestal 105 is formed to be inclined, the pulleys 115 of the motor 106 and the speed reducer 102 are merely moved slightly on the position of the motor 106 on the pedestal 105. The distance to the input side pulley 110 can be effectively changed. As a result, the tension of the V belt 116 can be easily adjusted.
JP-A-4-242144

  However, in the conventional example, the pedestal installation surface 104 of the speed reducer 102 is set with reference to the height of the output side gear 108 which is the largest member among the housed components. Therefore, the height of the casing 103 of the speed reducer 102 increases and the size thereof increases. If the casing 103 is large, the center of gravity of the motor 106 placed thereon is increased. When the motor 106 is installed at a position with a high center of gravity, the installation of the driving device 100 becomes unstable, and when the motor 106 that is a vibration source is located at a high position, there is a problem of increasing vibration.

  Therefore, the present invention can effectively adjust the distance between the output shaft of the motor and the input shaft of the speed reducer with a small position adjustment of the pedestal or the motor, and can further reduce the center of gravity of the speed reducer. An object is to provide a drive device.

  The feature of this invention is that the angle with respect to the horizontal direction of the tangent line that passes through the outer periphery of the input side gear and the output side gear accommodated in the casing is α, and the inclination angle of the pedestal arrangement surface on the upper surface of the casing with respect to the horizontal direction is β. Then, the gist is provided with a reduction gear set to α ≦ β, a pedestal fixed on the pedestal arrangement surface, and a motor fixed on the pedestal.

  According to the present invention, since the base mounting surface of the casing is inclined, the distance between the motor output shaft and the speed reducer input shaft can be effectively changed by slightly shifting the position of the base and the position of the motor on the base. it can. Further, since the upper surface portion of the casing is disposed at a position close to both the input side gear and the output side gear, the reduction gear can be miniaturized as much as possible. As described above, the distance between the motor output shaft and the input shaft of the reduction gear can be adjusted effectively with a small position adjustment of the base and the motor, and the center of gravity of the drive unit can be lowered by downsizing the reduction gear. The drive device can be installed in a stable state. Since the motor that is the vibration source is installed at a low position, vibration can be reduced.

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

  1 to 5 show an embodiment in which the present invention is applied to an escalator driving device which is a man conveyor. 1 is a schematic side view of the escalator 1, FIG. 2 is a front view of the drive device 10, FIG. 3 is a side view of the drive device 10, FIG. 4 is an enlarged cross-sectional view of the main part of the base 15, and FIG. It is principal part sectional drawing which shows the location of the input shaft 17a and the output shaft 18a.

  As shown in FIG. 1, the escalator 1 is installed between a lower floor entrance 2 and an upper floor entrance 3. A machine room 5 surrounded by a frame 4 is provided below the upper floor entrance 3. The machine room 5 accommodates a driving device 10 for driving a step conveyor chain (not shown).

  As shown in FIGS. 2 and 3, the driving device 10 is fixed on a reduction gear 12 placed on a machine bed 11 on the floor of the machine room 5 and a pedestal installation surface 14 of a casing 13 of the reduction gear 12. The pedestal 15 and a motor 16 fixed on the pedestal 15 are provided.

  An input side gear 17 and an output side gear 18 are accommodated in the casing 13 of the speed reducer 12. An input shaft 17 a of the input side gear 17 protrudes outside the casing 13. An input-side pulley 19 is fixed to the protruding input shaft 17a. The output shaft 18a of the outlet side gear 18 protrudes outside the casing 13 from both sides. An outlet pulley 20 is fixed to one side of the protruding output shaft 18a. One end of a belt (not shown) is hung on the output pulley 20 and the other end of the belt (not shown) is hung on a sprocket pulley (not shown) of a step conveyor chain (not shown). ing.

  A brake disc 22 and a brake plate 23 of the electromagnetic brake 21 are fixed to the other side of the protruding output shaft 18a. The electromagnetic brake 21 includes a brake disk 22, a braking plate 23, an electromagnetic coil (not shown), a compression spring (not shown), and the like. An electromagnetic coil (not shown) other than the brake disk 22 and the brake plate 23, a compression spring (not shown), and the like are accommodated in a recess (not shown) formed at a location facing the brake plate 23 of the casing 13. ing.

  Moreover, the base mounting surface 14 on the upper surface of the casing 13 is inclined with respect to the horizontal direction. If the tangential angle with respect to the horizontal direction of the tangent line a that is in contact with the outer periphery of both the input side gear 17 and the output side gear 18 is α, and the inclination angle of the pedestal arrangement surface 14 of the casing 13 is β, the inclination angle β is substantially tangential angle. α (approximately β = α) is set. Further, an inspection port (not shown) is provided at a position of the base mounting surface 14 of the casing 13.

  The pedestal 15 is disposed on the pedestal mounting surface 14 of the casing 13 and at a position that closes the inspection port (not shown). That is, the base 15 also serves as an inspection port closing lid. The pedestal 15 is fixed to the casing 13 by pedestal fixing bolts 24. The position of the base 15 on the casing 13, that is, the position of the motor 16 can be adjusted by the first adjustment screw 25. As shown in detail in FIG. 4, the pedestal 15 is configured by stacking three plates 15a, 15b, and 15c. A concave portion 15d is formed in the middle plate 15b. The tip of the motor fixing bolt 26 is disposed in the recess 15d.

  Returning to FIGS. 2 and 3, the motor 16 is fixed on the base 15 by a motor fixing bolt 26. The fixing position of the motor 16 on the pedestal 15 can be adjusted by the second adjustment screw 27. A flywheel 29 and a pulley 30 are fixed to the output shaft 28 of the motor 16. One end side of the V belt 6 is hung on the pulley 30 of the motor 16, and the other end side of the V belt 6 is hung on the input side pulley 19 of the speed reducer 12.

  As shown in FIG. 5, an oil seal 33 is fixed to a position outside the bearing 32 on the input shaft 17 a and the output shaft 18 a that protrude outward from the inside of the casing 13. Oil scattering prevention fins 33 are fixed to the input shaft 17 a and the output shaft 18 a located further outside the oil seal 33. An oil discharge hole 34 is formed at a lower position of the casing 13 where the oil scattering prevention fins 33 are disposed.

  In the above configuration, when the motor 16 is driven, the rotation is transmitted to the speed reducer 12 via the V belt 6. The speed reducer 12 decelerates the transmitted rotation to a predetermined rotation and outputs it. The rotation output from the speed reducer 12 is transmitted to a step conveyor chain (not shown) via a belt (not shown).

  In this drive device 1, since the pedestal installation surface 14 of the casing 13 is inclined, the position of the pedestal 15 and the position of the motor 16 on the pedestal 15 are slightly shifted by the first adjustment screw 25 and the second adjustment screw 27. The distance between the output shaft 28 of the motor 16 and the input shaft 17a of the speed reducer 12, that is, the distance between the pulleys 30 and 19 can be greatly changed. Therefore, the tension of the V belt 6 can be easily adjusted. Moreover, since the upper surface part of the casing 13 is disposed at a position close to both the input side gear 17 and the output side gear 18, the speed reducer 12 can be miniaturized as much as possible. Therefore, the center of gravity of the drive device 10 can be lowered by downsizing the speed reducer 12, and the drive device 10 can be installed in a stable state. Further, since the motor 16 as a vibration source is installed at a low position, vibration can be reduced.

  In this embodiment, the pedestal installation surface 14 is set to α = β, but it may be set to α ≦ β. As in the present embodiment, the height of the casing 13 can be set to the lowest when α = β. The larger β is set to α, the more the position of the base 15 and the position of the motor 16 on the base 15 are adjusted, the distance between the output shaft 28 of the motor 16 and the input shaft 17a of the speed reducer 12, that is, both The distance between the pulleys 30 and 19 can be greatly changed.

  In this embodiment, the pedestal 15 also serves as a lid that closes the inspection port (not shown) of the casing 13. Therefore, if the motor 16 and the pedestal 15 are removed from the upper surface of the casing 12, the inspection port (see FIG. (Not shown) can be opened. Therefore, the inspection work can be performed quickly. Since a dedicated lid for closing the inspection port (not shown) is unnecessary, the number of parts is reduced. By making the base 15 have a low height structure as in the present embodiment, the position of the center of gravity of the motor 16 installed on the base 15 can be lowered. Thereby, further stabilization of the drive device 10 can be achieved.

  In this embodiment, the input shaft 17a and the output shaft 18a projecting outward from the inside of the casing 13 are provided with the oil scattering prevention fins 33 at positions outside the oil seal 32. Even if oil leaks outside the seal 32 through the input shaft 17a and the output shaft 18a, it is scattered from the input shaft 17a and the output shaft 18a by the oil scattering prevention fins 33. Therefore, leakage oil adheres to the parts fixed to the input shaft 17a and the output shaft 18a outside the casing 13, specifically, the input side pulley 19, the output side pulley 20, the brake disk 22, the brake plate 23, and the like. Can be prevented. Further, since the leaked oil scattered by the oil splash preventing fins 33 is discharged to the outside through the oil discharge hole 34, the leaked oil does not accumulate inside the casing 13.

  In this embodiment, a recess (not shown) is provided in the casing 13, and an electromagnetic coil (not shown), a compression spring (not shown), etc. of the electromagnetic brake 21 are accommodated in the recess (not shown). The width dimension of the speed reducer 12 can be reduced. In addition, for example, a casting case for accommodating an electromagnetic coil (not shown), a compression spring (not shown), and the like can be eliminated, and the use weight of the casting material of the speed reducer 12 can be reduced. Thereby, the number of parts of the speed reducer 12 can be reduced and the weight can be reduced, and the brake shaft can be set short, so that the strength of the brake shaft can be improved.

  In this embodiment, the case where the present invention is applied to an escalator drive device has been described. However, the present invention can also be applied to a drive device such as a moving sidewalk.

The schematic side view of the escalator which concerns on embodiment of this invention. The front view of the drive device which concerns on embodiment of this invention. The side view of the drive device which concerns on embodiment of this invention. The principal part expanded sectional view of the base which concerns on embodiment of this invention. The principal part sectional drawing which shows the location of the input shaft and output shaft which protrude from the casing which concerns on embodiment of this invention. The front view of the drive device of a prior art example. The principal part sectional drawing which shows the location of the axis | shaft which protrudes from the casing of a prior art example.

Explanation of symbols

1 Escalator (man conveyor)
6 V-belt 10 Drive device 12 Reducer 13 Casing 14 Base mounting base 15 Base 16 Motor 17 Input side gear 17a Input shaft (shaft)
18 Output side gear 18a Output shaft (shaft)
19 Input side pulley 30 Motor pulley 32 Oil seal 33 Oil scattering fin a Tangent α Angle of tangent to horizontal direction β Inclination angle of pedestal mounting surface with respect to horizontal direction

Claims (3)

If the angle with respect to the horizontal direction of the tangent line in contact with the outer periphery of both the input side gear and the output side gear accommodated in the casing is α, and the inclination angle of the pedestal arrangement surface of the upper surface of the casing with respect to the horizontal direction is β, α ≦ a reduction gear set to β,
A pedestal fixed on the pedestal placement surface;
A motor fixed on the pedestal;
A man conveyor driving device comprising:   2. The drive device for a man conveyor according to claim 1, wherein the pedestal also serves as a lid for closing an inspection port of the casing.   3. The man conveyor driving device according to claim 1, wherein an oil scattering prevention fin is provided at an outer position of the oil seal on a shaft protruding from the inside of the casing to the outside. 4.

Images