JP2010126281A - Drive device for passenger conveyer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drive device for a passenger conveyor in which a rotation detection means is disposed coaxially with the rotating shaft of a speed reduction gear and which has superior maintainability. <P>SOLUTION: This drive device includes the speed reduction gear 11 having an outer plate 22 disposed on the outside of a braking body 13, the rotation detection means 14 for detecting the rotational speed of the rotating shaft 21, and a restriction means 23 which is formed of a bracket 23A provided to the rotation detection means and pins 23B one end of which is fixed to the outer plate and the other end of which is engaged with the bracket and which restricts the rotation detection means in the rotating direction. The inner diameter dimension 22A of the outer plate is set larger than the outer diameter dimension 14A of the rotation detection means. A groove one end of which is open is provided to the restriction means. The bracket and the pin are engaged by inserting the pin into the bracket. The engagement of the bracket and the pin is released by separating the outer plate from the braking body. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an escalator in which a step is generated in adjacent treads and a driving device for a passenger conveyor such as an electric road in which no step is generated between adjacent treads, and in particular, a passenger conveyor provided with a rotation detecting means for detecting the rotation speed of a speed reducer. It is related with the drive device.

  In general, a passenger conveyor is provided with an electric motor that applies a driving force and a speed reducer that includes a braking body that applies a braking force to a rotating shaft, and the rotation speed of the speed reducer is detected by a rotation detecting means. To control the operation.

  FIG. 8 is a schematic configuration diagram showing a conventional passenger conveyor drive device.

  As shown in FIG. 8, a conventional passenger conveyor driving device includes a braking body 113 that applies a braking force to the rotating shaft 121, an outer plate 122 disposed outside the braking body 113, and the rotating shaft 121. The rotation detecting means 114 is fixed to the rotation detecting means 114 for detecting the number of rotations of the rotating shaft 121, the bracket 123A provided in the rotation detecting means 114, and one end is fixed to the outer plate 122 and the other end is engaged with the bracket 123A. And a speed reducer 111 having a restraining means 123 for restraining the rotation detecting means 114 in the rotational direction. The bracket 123A is provided with an annular portion, and the rotation detecting means 114 is restrained in the rotational direction by inserting a pin 123B into the annular portion.

  Thus, in the drive device in which the rotation detection means 114 is arranged coaxially with the rotation shaft 121 of the speed reducer 111, when performing maintenance work of the brake body 113, the rotation detection means 114 located on the outermost side of the device. Then, the outer plate 122 needs to be removed. However, the rotation detecting means 114 has a structure that cannot be easily removed because it is necessary to reliably detect the rotation of the rotating shaft 121, and the rotation detecting means is removed every time maintenance work of the braking body 113 is performed. This was not desirable in terms of work efficiency. The inner diameter 122A of the outer plate 122 through which the rotating shaft 121 is inserted is set to be smaller than the outer diameter 114A of the rotation detecting means 114, and the outer plate 122 is removed by passing the rotation detecting means 114 by this gap. That was not taken into account.

Therefore, a rotation shaft dedicated to the rotation detection means that rotates in synchronization with the rotation shaft of the speed reducer is provided, the rotation detection means is arranged to be shifted from the rotation shaft of the speed reducer, and the outer plate in the axial direction of the rotation detection means is arranged. It is conceivable that a cutout is provided in the projected area, the outer plate can be removed without removing the rotation detecting means, and the maintenance work efficiency of the brake body is improved (for example, see Patent Document 1).
JP 2001-169512 A (paragraph numbers 0011 to 0020, FIG. 1)

  However, in the above-described conventional apparatus, it is necessary to provide a rotation shaft dedicated to the rotation detection means, which causes an increase in cost and a structure in which the rotation detection means is arranged to be shifted from the rotation shaft of the speed reducer. There was a problem of causing an increase in size.

  The present invention has been made from the above-described actual state of the prior art, and an object of the present invention is to provide a passenger conveyor drive device having excellent maintainability while having a structure in which the rotation detecting means is arranged coaxially with the rotation shaft of the speed reducer. There is to do.

  In order to achieve the above object, an invention according to claim 1 of the present invention provides a braking body that applies a braking force to a rotating shaft, an outer plate disposed outside the braking body, and the rotating shaft. A rotation detecting means for detecting the number of rotations of the rotating shaft, a bracket provided on the rotation detecting means, and a pin having one end fixed to the outer plate and the other end engaged with the bracket. In the passenger conveyor drive device having a speed reducer provided with a restraining means for restraining the rotation detecting means in the rotation direction, the inner diameter dimension of the outer plate is set larger than the outer diameter dimension of the rotation detecting means. The restraining means is characterized in that the engagement between the bracket and the pin is released according to the separation of the outer plate from the braking body.

  In the invention according to claim 1 of the present invention configured as described above, the rotation detecting means is arranged coaxially with the rotation shaft of the speed reducer by setting the inner diameter dimension of the outer plate larger than the outer diameter dimension of the rotation detecting means. With this structure, the outer plate can be removed without removing the rotation detection means, and the efficiency of the maintenance work of the braking body can be improved. Further, the restraining means has a structure in which the engagement between the bracket and the pin is released in accordance with the separation of the outer plate from the braking body, so that the engagement between the bracket and the pin is released during maintenance work of the braking body. No special effort is required, and the workability can be further improved.

  The invention according to claim 2 of the present invention is characterized in that the bracket has a groove in which one side is released and the pin is inserted.

  In the invention according to claim 2 of the present invention configured as described above, the groove is provided in the bracket, and the pin is inserted into the groove, thereby smoothly engaging and releasing the bracket and the pin. Can be done.

  According to the present invention, it is possible to make the rotation detecting means excellent in maintainability while having a structure in which the rotation detecting means is arranged coaxially with the rotation shaft of the speed reducer, thereby causing an increase in cost or an increase in size of the apparatus. Therefore, it is possible to reduce labor and time required for maintenance work, in particular, maintenance work of the braking body.

  Embodiments of a passenger conveyor drive device according to the present invention will be described below with reference to the drawings.

  FIG. 1 is an overall schematic configuration diagram of a passenger conveyor to which the driving device of the present invention is applied, FIG. 2 is an enlarged view of a main part of the passenger conveyor, and FIG. 3 is a front view of the driving device viewed from the direction A in FIG. 4 is a top view of the drive device as viewed from the direction B in FIG. 2, FIG. 5 is a top view of the main part showing one embodiment of the drive device for the passenger conveyor according to the present invention, and FIG. 6 is a view from the direction C in FIG. It is a principal part front view.

  As shown in FIG. 1, the passenger conveyor, for example, the escalator 1, is installed across the upper and lower floors, and is composed of an upper horizontal frame 2A, an intermediate inclined frame 2B, and a lower horizontal frame 2C, and an upper horizontal frame 2A. A drive sprocket 3 pivotally supported in the interior, a driven sprocket 4 pivotally supported in the lower horizontal frame 2C, and a step chain 5 wound endlessly across the drive sprocket 3 and the driven sprocket 4; A plurality of steps 6 that are connected to the step chain 5 and have a step plate that is always held horizontally on the forward path side, and a balustrade panel that is erected along positions corresponding to both sides of the step 6 in the width direction of the frame 6 7, a moving handrail 8 that moves while being guided by the periphery of the balustrade panel 7, a drive device 9 that drives the step chain 5 and the moving handrail 8, and a control device 1 that controls the operation of the escalator 1. It is equipped with a door. In addition, although not shown, the escalator 1 is provided with various safety devices, automatic operation devices, and energy saving operation means, which are controlled for operation based on a command via the control device 10.

  The drive device 9 includes a speed reducer 11 and a drive motor 12. As shown in FIGS. 2 to 4, the speed reducer 11 includes a braking body 13 that brakes the power of the escalator 1, and a rotation detection unit 14 that detects the rotational speed of the speed reducer 11. A power transmission chain 17 is wound around a sprocket 15 and an input sprocket 16 provided on the rotating shaft of the drive motor 12, and a power transmission chain is provided between the output sprocket 18, the drive sprocket 3 and the coaxial power transmission sprocket 19. 20 is wrapped around. Here, the input sprocket 16, the sprocket 15, and the power transmission chain 17 serve as the first transmission means for transmitting the power of the driving motor 12 to the speed reducer 11, and the power transmission coaxial with the output sprocket 18 and the driving sprocket 3. The sprocket 19 and the power transmission chain 20 serve as second transmission means for transmitting power from the speed reducer 11 to the steps 6 of the escalator 1 and the driving unit of the moving handrail 8. In other words, the power from the driving motor 12 is transmitted to the input sprocket 16 by the power transmission chain 17 wound around the sprocket 15. The power transmitted to the input sprocket 16 is transmitted to the speed reducer 11 through the rotating shaft 21. The power transmitted to the speed reducer 11 is transmitted to the power transmission sprocket 19 by the power transmission chain 20 wound around the output sprocket 18. The power transmitted to the power transmission sprocket 19 drives the plurality of steps 6 through the drive sprocket 3 and drives the moving handrail 8 through a handrail drive mechanism (not shown).

  In the speed reducer 11 of this embodiment, as shown in FIGS. 5 and 6, the inner diameter dimension 22 </ b> A of the outer plate 22 disposed outside the braking body 13 is larger than the outer diameter dimension 14 </ b> A of the rotation detecting means 14. In addition to the setting of the bracket 23A provided on the rotation detecting means 14 and the pin 23B having one end fixed to the outer plate 22 and the other end engaged with the bracket 23A, the rotation detecting means 14 is restrained in the rotation direction. The restraining means 23 to be configured has a structure in which the engagement between the bracket 23A and the pin 23B is released according to the separation of the outer plate 22 from the braking body 13. That is, the bracket 23A has a groove 23a that is released on one side, and the pin 23B is inserted into the groove 23a.

  In the present embodiment, when the maintenance work of the brake body 13 is performed, the outer plate 22 is pulled away from the brake body 13 along the rotation shaft 21 while the rotation detection means 14 remains attached to the rotation shaft 21. Displace to remove. At this time, the pin 23B whose one end is fixed to the outer plate 22 moves along the groove 23a according to the separation of the outer plate 22 from the braking body 13, and the engagement between the bracket 23A and the pin 23B is released. On the other hand, when the maintenance work of the brake body 13 is completed, the outer plate 22 is attached to the brake body 13 in the reverse procedure as described above, the pin 23B is inserted into the groove 23a and engaged with the bracket 23A, and the rotation detecting means 14 is rotated. The state is restricted in the direction.

  According to this embodiment, it is possible to remove the outer plate 22 without removing the rotation detecting means 14, and the efficiency of maintenance work of the brake body 13 can be improved. Further, since the restraining means 23 has a structure in which the engagement between the bracket 23A and the pin 23B is released according to the separation of the outer plate 22 from the braking body 13, the bracket 23A can be used during maintenance work of the braking body 13. There is no need for special labor to release the engagement between the pin 23B and the pin 23B, and the workability can be further improved. As a result, the rotation detecting means 14 is arranged coaxially with the rotation shaft 21 of the speed reducer 13 and is excellent in maintainability, and maintenance work, in particular, without increasing the cost of the apparatus or increasing the size, The labor and time required for maintenance work of the brake body 13 can be reduced.

  FIG. 7 is a top view of an essential part showing another embodiment of a passenger conveyor drive device according to the present invention. In addition, the same code | symbol is attached | subjected to the thing equivalent to what was mentioned above.

  In the structure shown in FIG. 7, the pin 33B of the restraining means 33 has a different shape from that shown in FIG. The bracket 33A is provided with a groove (not shown) whose one side is released, and the bracket 33A and the pin 33B are engaged with each other by inserting the pin 33B into the groove. In this way, the pin 33B can be shaped as shown in the figure by adopting a structure in which the engagement between the bracket 33A and the pin 33B is engaged via the groove.

  In the above-described embodiment, the escalator 1 has been described as an example of a passenger conveyor to which the drive device of the present invention is applied. However, it goes without saying that the present invention can also be applied to an electric road.

1 is an overall schematic configuration diagram of a passenger conveyor to which a drive device of the present invention is applied. It is a principal part enlarged view of a passenger conveyor. It is a front view of the drive device seen from the A direction of FIG. FIG. 3 is a top view of the drive device viewed from the direction B in FIG. 2. It is a principal part top view which shows one Embodiment of the drive device of the passenger conveyor which concerns on this invention. It is the principal part front view seen from the C direction of FIG. It is a principal part top view which shows other embodiment of the drive apparatus of the passenger conveyor which concerns on this invention. It is a schematic block diagram which shows the drive device of the conventional passenger conveyor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Escalator 2 Frame 2A Upper horizontal frame 2B Middle inclined frame 2C Lower horizontal frame 3 Drive sprocket 4 Driven sprocket 5 Step chain 6 Step 7 Parapet panel 8 Moving handrail 9 Drive device 10 Control device 11 Reducer 12 Drive motor 13 Brake body 14 Rotation detection means 15 Sprocket 16 Input sprocket 17 Power transmission chain 18 Output sprocket 19 Power transmission sprocket 20 Power transmission chain 21 Rotating shaft 22 Outer plate 23, 33 Constraint means 23A, 33A Bracket 23a, 33a Groove 23B, 33B Pin

Claims (2)

A braking body that applies a braking force to the rotating shaft, an outer plate disposed outside the braking body, a rotation detecting means that is attached to the rotating shaft and detects the number of rotations of the rotating shaft, and the rotation A deceleration provided with a bracket provided on the detection means, and a restraining means for restraining the rotation detection means in the rotational direction, comprising a pin having one end fixed to the outer plate and the other end engaged with the bracket. In a passenger conveyor drive device having a machine,
The inner diameter dimension of the outer plate is set larger than the outer diameter dimension of the rotation detecting means, and the restraining means releases the engagement between the bracket and the pin according to the separation of the outer plate from the braking body. Passenger conveyor drive device, characterized in that the structure is made.   The driving device for a passenger conveyor according to claim 1, wherein the bracket has a groove in which one side is released and the pin is inserted.

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