Footstep speed monitoring device of passenger conveyor, footstep driving unit of passenger conveyor, passenger conveyor, and handrail speed monitoring device of passenger conveyor

Abstract

To provide a footstep speed monitoring device of a passenger conveyor, a footstep diving unit of the passenger conveyor, the passenger conveyor, and a handrail speed monitoring device of the passenger conveyor capable of easily changing a detection object structure.SOLUTION: A speed monitoring device 27 comprises a plate-shaped rotating body 41, a sensor 42, and a speed calculation unit 55. The rotating body 41 has an attachment part to which detection objects are detachably attached at multiple locations and rotates in synchronization with the movement of the footstep installed on an input shaft of a reduction gear. The sensor 42 detects the detection object attached to the attachment part and outputs the signal. The speed calculation unit 55 calculates the footstep moving speed based on the signal output by the sensor 42.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to a step speed monitoring device for a passenger conveyor, a step drive unit for a passenger conveyor, a passenger conveyor, and a handrail speed monitoring device for a passenger conveyor. [Background technology]

[0002] Conventional passenger conveyor systems are equipped with a proximity sensor that detects the number of detection points per unit time formed on an inner disk used to restrict the rotation of the input shaft in order to detect the rotation speed of the input shaft to which driving force from a motor is transmitted (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-1538 Summary of the Invention [Problem to be solved by the invention]

[0004] When the equipment that calculates the speed is changed due to modernization or the like, the speed cannot be calculated correctly unless the detection target detected by the sensor is also changed. Therefore, it is necessary to appropriately change the structure of the detection target (for example, the number and spacing) in accordance with the change in the equipment that calculates the speed. In conventional passenger conveyor systems, the detection target is formed on a predetermined rotating body, and this rotating body is also attached to the system in a manner that does not assume removal. Therefore, there was a problem in that it was difficult to change the structure of the detection target detected by the sensor.

[0005] The present disclosure is intended to solve the above-mentioned problems, and aims to provide a passenger conveyor step speed monitoring device, a passenger conveyor step drive unit, a passenger conveyor, and a passenger conveyor handrail speed monitoring device that can easily change the structure of the object detected by the sensor. [Means for solving the problem]

[0006] The passenger conveyor step speed monitoring device of the present disclosure has an attachment part to which a detection object can be attached detachably at multiple locations, and is equipped with a plate-shaped rotating body that is attached to the input shaft of a reducer and rotates in synchronization with the movement of the step, a sensor that detects the detection object attached to the attachment part and outputs a signal, and a speed calculation part that calculates the movement speed of the step based on the signal output by the sensor.

[0007] The drive unit of the passenger conveyor according to the present disclosure comprises: a motor having a rotating shaft and driving the steps; a reducer having a housing and an input shaft arranged protruding from the housing and reducing the rotational speed of the rotation transmitted from the input shaft and outputting it; an input shaft pulley arranged on the input shaft and connected to the rotating shaft via a transmission member; a plate-shaped rotating body arranged on the input shaft so as to be positioned between the housing and the input shaft pulley in the axial direction of the input shaft, having mounting parts to which a detection object can be detachably attached at multiple locations, and rotating in synchronization with the movement of the steps; a detection sensor that detects the detection object attached to the mounting part and outputs a signal; and a speed calculation unit that calculates the movement speed of the steps based on the signal output by the sensor.

[0008] The moving handrail speed monitoring device for a passenger conveyor according to the present disclosure includes a mounting part that can be detachably attached to a detection object at multiple locations, a plate-shaped rotating body that rotates integrally with a detection roller that is rotatably provided in contact with the moving handrail, a sensor that detects the detection object attached to the mounting part and outputs a signal, and a speed calculation part that calculates the moving speed of the moving handrail based on the signal output by the sensor. [Effects of the Invention]

[0009] According to the present disclosure, the structure of the detection target detected by the sensor can be easily changed. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a schematic diagram showing a configuration of a passenger conveyor in the first embodiment. [Figure 2]2 is a schematic diagram showing the configuration of a drive unit and its surroundings in the first embodiment. FIG. [Figure 3] 2 is a diagram showing a part of the drive unit according to the first embodiment as viewed from above. FIG. [Figure 4] 1 is a block diagram showing the functions of a speed monitoring device according to a first embodiment. [Figure 5] 2 is a block diagram showing the hardware configuration of a control device according to the first embodiment. FIG. [Figure 6] 2 is a diagram showing a configuration of a rotating body according to the first embodiment. FIG. [Figure 7] 7A and 7B are diagrams illustrating examples of how to attach a detection target in the first embodiment, with FIG. 7A being a first example and FIG. 7B being a second example. [Figure 8] 8A and 8B are diagrams illustrating signals output by a sensor in the first embodiment, where FIG. 8A is an output signal corresponding to a first example, and FIG. 8B is an output signal corresponding to a second example. [Figure 9] 9A and 9B are diagrams illustrating a first example of a situation in which a rotating body is changed in the first embodiment, in which FIG. 9A shows the rotating body before the change and FIG. 9B shows the rotating body after the change. [Figure 10] 10A and 10B are diagrams illustrating a second example of a situation in which a rotating body is changed in the first embodiment, where FIG. 10A shows the rotating body before the change and FIG. 10B shows the rotating body after the change. [Figure 11] FIG. 10 is a schematic diagram showing the configuration of a speed monitoring device and its peripheral configuration in a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] Embodiment 1 The configuration of the passenger conveyor 1 in the first embodiment will be described below. Fig. 1 is a schematic diagram showing the configuration of the passenger conveyor 1 in the first embodiment.

[0012] The passenger conveyor 1 is, for example, an escalator. The passenger conveyor 1 has a frame 2 that is installed in a building structure. Inside the frame 2, there are provided a drive unit 3, a transmission chain 4, a first sprocket 5, a second sprocket 6, a driven sprocket 7, and a control device 8. The drive unit 3 is connected to the first sprocket 5 and the second sprocket 6 via the transmission chain 4. The driving force of the drive unit 3 is transmitted to the first sprocket 5 and the second sprocket 6 via the transmission chain 4, causing the first sprocket 5 and the second sprocket 6 to rotate. The control device 8 controls the operation of the passenger conveyor 1.

[0013] An endless step drive chain 11 is provided on the first sprocket 5 and the driven sprocket 7. The step drive chain 11 connects a plurality of steps 12. In FIG. 1, only some of the steps 12 are shown. When the first sprocket 5 rotates, the driven sprocket 7 and the step drive chain 11 rotate, and the plurality of steps 12 move in a circular motion.

[0014] An endless moving handrail drive chain 15 is provided on the second sprocket 6. The moving handrail drive chain 15 is wound around a transmission pulley 16 and connected to a moving handrail drive device 17.

[0015] A balustrade 18 is provided on the top of the frame 2. An endless moving handrail 19 is provided on the balustrade 18. When the second sprocket 6 rotates, a rotational force is transmitted to the moving handrail drive device 17 via the moving handrail drive chain 15 and the transmission pulley 16. When the rotational force is transmitted to the moving handrail drive device 17, this rotational force is transmitted to the moving handrail 19, causing the moving handrail 19 to move in a circular motion. The moving handrail 19 is provided with a moving handrail speed detection device 20 that detects the movement speed of the moving handrail 19.

[0016] The drive unit 3 drives the first sprocket 5 and the second sprocket 6, causing the steps 12 and the moving handrails 19 to move synchronously and in a circular motion.

[0017] The configuration of the drive unit 3 in embodiment 1 will be described. Fig. 2 is a schematic diagram showing the configuration of the drive unit 3 and its surroundings in embodiment 1. Fig. 3 is a view of a part of the drive unit 3 in embodiment 1 seen from above (the upper side in Fig. 2). Fig. 4 is a block diagram showing the function of the speed monitoring device 27 in embodiment 1. The drive unit 3 has a motor 21, a motor pulley 22, a reducer 23, an input shaft pulley 24, an output shaft pulley 25, a transmission member 26, a speed monitoring device 27, and a drive control unit 28.

[0018] The motor 21 drives the steps 12 and the moving handrail 19. The motor 21 has a rotating shaft 31, to which a motor pulley 22 is attached. The reducer 23 has a housing 32, an input shaft 33, and an output shaft 34. The input shaft 33 and the output shaft 34 are arranged to protrude from the housing 32 (toward the right in FIG. 3). The reducer 23 reduces the rotational speed of the rotation transmitted from the input shaft 33 and outputs it.

[0019] An input shaft pulley 24 is provided on the input shaft 33. The motor pulley 22 and the input shaft pulley 24 are connected via a transmission member 26. The transmission member 26 is formed of, for example, a belt. The driving force of the motor 21 is transmitted to the reducer 23 via the transmission member 26. An output shaft pulley 25 is provided on the output shaft 34. A transmission chain 4 is provided on the output shaft pulley 25.

[0020] In the first embodiment, the speed monitoring device 27 is a step speed monitoring device. The speed monitoring device 27 has a rotating body 41, a sensor 42, and a speed monitoring unit 43. The rotating body 41 is plate-shaped, for example, in the shape of a disk. The rotating body 41 is provided on the input shaft 33 of the reducer 23, and rotates in synchronization with the movement of the steps 12.

[0021] The rotating body 41 is provided on the input shaft 33 so as to be disposed between the housing 32 and the input shaft pulley 24 in the axial direction of the input shaft 33 (left-right direction in FIG. 3). When the rotating body 41 is provided in this arrangement, replacement of the transmission member 26 is easier than when the rotating body 41 is disposed on the side of the input shaft pulley 24 farther from the housing 32 in the axial direction of the input shaft 33 (right side in FIG. 3). The transmission member 26 is subject to wear and is therefore replaced periodically. By disposing the rotating body 41 on the side of the input shaft pulley 24 closer to the housing 32 in the axial direction of the input shaft 33 (left side in FIG. 3), the rotating body 41 is less likely to interfere with the replacement work of the transmission member 26.

[0022] The sensor 42 is provided near the rotating body 41. The sensor 42 detects a detection object 53 attached to an attachment portion 52 and outputs a signal (see FIG. 6).

[0023] The speed monitoring unit 43 has a speed calculation unit 55 and a determination unit 56. The speed calculation unit 55 acquires an output signal from the sensor 42 and calculates the movement speed of the steps 12 based on the signal output by the sensor 42. The determination unit 56 determines whether the movement speed of the steps 12 is normal or not based on the value of the movement speed calculated by the speed calculation unit 55. For example, if the difference between the rotation speed set in the motor 21 and the movement speed calculated by the speed calculation unit 55 is larger than a predetermined value, the determination unit 56 determines that the movement speed of the steps 12 is not normal.

[0024] The speed monitoring device 27 calculates the moving speed of the steps 12 based on the rotation of the rotor 41 attached to the input shaft 33 of the reducer 23. Therefore, the speed monitoring device 27 is less susceptible to the influence of members (e.g., transmission member 26) intervening between the steps 12 and the calculation, compared to when the calculation is based on the rotation of the motor 21. Therefore, the speed monitoring device 27 can monitor the moving speed of the steps 12 more accurately than when the speed monitoring device 27 monitors the rotation of the motor 21.

[0025] The drive control unit 28 controls the drive of the motor 21. The drive control unit 28 controls the rotation speed set for the motor 21 in accordance with the determination result of the determination unit 56. For example, when the determination unit 56 determines that the movement speed of the steps 12 is not normal, the drive control unit 28 adjusts the rotation speed of the motor 21 or stops the drive of the motor 21.

[0026] The drive control unit 28 and the speed monitoring unit 43 constitute the control device 8.

[0027] The following describes the hardware configuration of the control device 8 in the first embodiment. Fig. 5 is a block diagram showing the hardware configuration of the control device 8. The control device 8 is realized by a computer such as a personal computer or a microcontroller.

[0028] The control device 8 includes a bus 61, a processor 62, a memory 63, an interface 64, and a secondary storage device 65. The processor 62, the memory 63, the interface 64, and the secondary storage device 65 are connected to each other via the bus 61.

[0029] The processor 62 is, for example, a CPU (Central Processing Unit). The processor 62 loads an operation program stored in the secondary storage device 65 into the memory 63 and executes it, thereby realizing each function of the control device 8.

[0030] The memory 63 is a main storage device configured by, for example, RAM (Random Access Memory). The memory 63 stores programs that the processor 62 reads from the secondary storage device 65. The memory 63 functions as a work memory when the processor 62 executes the programs.

[0031] The interface 64 is an I / O (Input / Output) interface such as a serial port, a USB (Universal Serial Bus) port, a network interface, etc. The interface 64 is used to communicate with other components.

[0032] The secondary storage device 65 is, for example, a flash memory, a hard disk drive (HDD), or a solid state drive (SSD). The secondary storage device 65 stores various information necessary for the operation of the control device 8 and programs executed by the processor 62.

[0033] The configuration of the rotor 41 in the first embodiment will be described. Fig. 6 is a diagram showing the configuration of the rotor 41 in the first embodiment. The rotor 41 has a shaft hole 51 and an attachment portion 52. By fitting the shaft hole 51 into the input shaft 33, the rotor 41 is rotatably mounted on the input shaft 33.

[0034] Detection objects 53 are detachably attached to the attachment portion 52 at multiple locations. The attachment portion 52 has multiple holes 52a. The detection objects 53 are detachably attached to the attachment portion 52 by, for example, screws. Multiple detection objects 53 can be attached to the attachment portion 52 at any intervals.

[0035] The attachment portion 52 is formed on the periphery of the rotating body 41. The periphery is a portion near the outer edge of the rotating body 41, and is at least in an area where the distance to the outer edge is shorter than the distance to the shaft hole 51. With this configuration, compared to when the attachment portion 52 is formed near the shaft hole 51 of the rotating body 41, the attachment portion 52 is located away from the input shaft 33 and closer to the operator's hand, or the attachment portion 52 is located away from a complicated location inside the device, making it easier to attach and detach the detection object 53. In particular, when the rotating body 41 is disc-shaped and the attachment portion 52 is formed on its periphery, the attachment portion 52 is likely to be located closer to the operator's hand, making it even easier to attach and detach the detection object 53.

[0036] The mechanism for calculating the velocity in the first embodiment will be described using an example. Fig. 7 is a diagram illustrating an example of how to attach the detection object 53 in the first embodiment, with Fig. 7(a) being a first example and Fig. 7(b) being a second example. Fig. 8 is a diagram illustrating an example of a signal output by the sensor 42 in the first embodiment, with Fig. 8(a) being an output signal corresponding to the first example and Fig. 8(b) being an output signal corresponding to the second example.

[0037] As shown in FIG. 7, the detection object 53 is attached so as to protrude outward (away from the shaft hole 51) from the periphery of the rotating body 41. The sensor 42 is directed toward the outer periphery of the periphery of the rotating body 41. As the rotating body 41 rotates, the direction in which the sensor 42 is directed passes through areas where the detection object 53 is present and areas where the detection object 53 is not present. The sensor 42 outputs a pulse-like signal depending on whether the detection object 53 is present or not. The speed calculation unit 55 calculates the moving speed of the steps 12 by counting the number of pulses per unit time.

[0038] In a first example shown in Fig. 7(a), two detection objects 53 are attached at equal intervals in the circumferential direction to a rotating body 41. In the first example, when the rotating body 41 makes one revolution, the sensor 42 outputs a signal (Fig. 8(a)) having two peaks at an interval obtained by dividing the time taken for the rotating body 41 to make one revolution into two equal parts.

[0039] In a second example shown in Fig. 7(b), eight detection objects 53 are attached at equal intervals in the circumferential direction to the rotating body 41. In the second example, when the rotating body 41 makes one revolution, the sensor 42 outputs a signal (Fig. 8(b)) having eight peaks at intervals obtained by dividing the time taken for the rotating body 41 to make one revolution into eight equal parts.

[0040] In this way, by appropriately selecting the number and arrangement of the detection objects 53 attached to the rotating body 41, the signal output by the sensor 42 is adjusted.

[0041] The relationship between the settings of the speed calculation unit 55 and the rotating body 41 to which the detection target object 53 is attached will be described. For example, assume that the speed calculation unit 55 is set to calculate the moving speed of the steps 12 based on the output signal of the first example (FIG. 8(a)), and that the rotating body of the first example (FIG. 7(a)) is used.

[0042] First, a case where the rotating body 41 is changed will be described. When the rotating body 41 is changed to the second example (FIG. 7(b)) due to replacement of the reducer 23, the speed calculation unit 55 acquires the output signal of the second example (FIG. 8(b)). When the rotational speed of the rotating body 41 is the same, the output signal of the second example (FIG. 8(b)) has a shorter peak interval than the output signal of the first example (FIG. 8(a)). In this case, the speed calculation unit 55 calculates the moving speed of the steps 12 based on an output signal with four times the number of pulses per unit time. Therefore, even if the rotational speed of the rotating body 41 is the same, the speed calculation unit 55 will calculate the moving speed of the steps 12 to be higher. As a result, the speed monitoring device 27 will not be able to correctly monitor the moving speed of the steps 12.

[0043] Next, we will explain what happens when the settings of the speed calculation unit 55 are changed. Suppose that, following replacement of the control device 8, the settings are changed so that the speed calculation unit 55 calculates the movement speed of the steps 12 based on the output signal of the second example (FIG. 8(b)). In this case, the speed calculation unit 55 will calculate the movement speed of the steps 12 based on an output signal with one-fourth the number of pulses per unit time. As a result, even if the rotation speed of the rotating body 41 is the same, the speed calculation unit 55 will calculate a lower movement speed of the steps 12. As a result, the speed monitoring device 27 will no longer be able to monitor the movement speed of the steps 12 correctly.

[0044] In order for the speed monitoring device 27 to correctly monitor the moving speed of the steps 12, the output signal set in the speed calculation unit 55 must match the structure of the detection object (specifically, the number and arrangement of the detection objects 53 on the rotating body 41). By appropriately attaching the detection objects 53 to the mounting portion 52 of the rotating body 41, a structure that matches the output signal set in the speed calculation unit 55 can be obtained.

[0045] A method for changing a rotating body in the first embodiment will be described using an example. FIG. 9 illustrates a first example of a situation in which a rotating body is changed in the first embodiment. FIG. 9(a) shows a rotating body 71 before change, and FIG. 9(b) shows a rotating body 41 after change. The rotating body 71 has a shaft hole 71a that fits onto the input shaft 33 and two protrusions 71b that are detected by the sensor 42. Assume that the rotating body 71 has a shape that outputs the signal of the first example (FIG. 8(a)). If it becomes necessary to replace the rotating body 71 due to modernization or the like, it is necessary to prepare a rotating body 41 that has a shape that outputs the signal of the first example (FIG. 8(a)), just like the rotating body 71 before change. In this situation, the changed rotating body 41 is prepared so as to mimic the shape of the rotating body 71 before change. In this example, two detection targets 53 are attached to the rotating body 41 at equal intervals in the circumferential direction, taking into account the number and arrangement of the protrusions 71b on the rotating body 71 before change. As a result, the rotor 41 has a shape that outputs the first example signal (FIG. 8(a)).

[0046] FIG. 10 illustrates a second example of a situation in which a rotor is changed in the first embodiment. FIG. 10(a) shows the rotor 72 before the change, and FIG. 10(b) shows the rotor 41 after the change. The rotor 72 has a shaft hole 72a that fits onto the input shaft 33 and eight protrusions 72b that are detected by the sensor 42. Assume that the rotor 71 before the change has a shape that outputs the signal of the second example (FIG. 8(b)). If the rotor 72 needs to be replaced due to modernization or other reasons, a rotor 41 having a shape that outputs the signal of the second example (FIG. 8(b)), similar to the rotor 72 before the change, must be prepared. In this situation, the changed rotor 41 is prepared so as to mimic the shape of the rotor 72 before the change. In this example, eight detection targets 53 are attached to the rotor 41 at equal intervals around the circumference, taking into account the number and arrangement of the protrusions 72b on the rotor 72 before the change. As a result, the rotor 41 has a shape that outputs the signal of the second example (FIG. 8(b)).

[0047] The number and arrangement of the detection objects 53 detected by the sensor 42 can be changed by changing the way in which the detection objects 53 are attached to the attachment portion 52. The structure of the detection object can be changed without removing the rotating body 41 from the input shaft 33.

[0048] In the past, when replacing a control device or a reducer equipped with a rotating body during modernization, it was necessary to replace both the control device and the reducer at the same time in order to maintain the function of correctly monitoring the step movement speed. Replacing both the control device and the reducer is a larger-scale operation than replacing either the control device or the reducer alone, and requires the passenger conveyor to be stopped continuously for a long period of time.

[0049] In contrast, with the passenger conveyor 1, the replacement of the control device 8 and the replacement of the reducer 23 can be performed separately. For example, if the reducer 23 is replaced first, the detection object 53 can be attached to the rotating body 41 of the replaced reducer 23 so as to match the settings of the speed calculation unit 55 of the control device 8. If the control device 8 is then replaced, the attachment method of the detection object 53 can be changed so as to match the settings of the speed calculation unit 55 of the replaced control device 8. By performing the replacement work separately, the continuous downtime of the passenger conveyor 1 is shortened. In this way, the burden of replacing devices due to modernization, etc., is reduced in the passenger conveyor 1.

[0050] Embodiment 2 The configuration of the speed monitoring device 127 in embodiment 2 will be described. Fig. 11 is a schematic diagram showing the configuration of the speed monitoring device 127 and its surroundings in embodiment 2. Embodiment 2 differs from embodiment 1 in that a rotating body 41 is provided in the moving handrail speed detection device 20. The same components as in embodiment 1 are given the same reference numerals, and their description will be omitted.

[0051] In the second embodiment, the speed monitoring device 127 is a moving handrail speed monitoring device. The speed monitoring device 127 has a rotating body 41, a sensor 42, and a speed monitoring unit 143. The speed monitoring unit 143 has a speed calculation unit 155 and a determination unit 156.

[0052] Moving handrail speed detection device 20 has detection roller 121 rotatably provided in contact with moving handrail 19, and rotating arm 122 rotatably supporting detection roller 121. In embodiment 2, rotating body 41 is provided so as to rotate integrally with detection roller 121. Sensor 42 is provided near rotating body 41. Sensor 42 detects detection target object 53 attached to mounting portion 52 of rotating body 41 and outputs a signal.

[0053] The speed calculation unit 155 acquires an output signal from the sensor 42 and calculates the movement speed of the moving handrail 19 based on the signal output by the sensor 42. The determination unit 156 determines whether the movement speed of the moving handrail 19 is normal or not based on the value of the movement speed calculated by the speed calculation unit 155. For example, if the difference between the rotation speed set in the motor 21 and the movement speed calculated by the speed calculation unit 155 is greater than a predetermined value, the determination unit 156 determines that the movement speed of the moving handrail 19 is not normal.

[0054] The speed monitoring device 127 calculates the moving speed of the moving handrail 19 based on the rotation of the rotating body 41, which rotates integrally with the detection roller 121. For this reason, the speed monitoring device 127 is less susceptible to the influence of members (such as the transmission member 26) intervening between the moving handrail 19 and the moving handrail 19 when calculating the moving speed of the moving handrail 19, compared to when calculating based on the rotation of the motor 21. Therefore, the speed monitoring device 127 can monitor the moving speed of the moving handrail 19 more accurately than when monitoring the rotation of the motor 21 or the rotation of intermediate members between the motor 21 and the moving handrail 19.

[0055] The drive control unit 128 controls the drive of the motor 21. The drive control unit 28 controls the rotation speed of the motor 21 in accordance with the determination result of the determination unit 156. For example, when the determination unit 156 determines that the movement speed of the steps 12 is not normal, the drive control unit 28 adjusts the rotation speed of the motor 21 or stops the drive of the motor 21.

[0056] The drive control unit 128 and the speed monitoring unit 143 constitute a control device 108. The control device 108 controls the operation of the passenger conveyor 1. The hardware configuration of the control device 108 is the same as that of the control device 8 in the first embodiment.

[0057] The speed calculation unit 155 in the second embodiment calculates the moving speed of the moving handrail 19, whereas the speed calculation unit 55 in the first embodiment calculates the moving speed of the steps 12. Except for this point, the relationship between the settings of the speed calculation unit 155 in the second embodiment and the rotating body 41 to which the detection object 53 is attached is the same as the relationship between the settings of the speed calculation unit 55 in the first embodiment and the rotating body 41 to which the detection object 53 is attached.

[0058] According to the second embodiment, the replacement of the control device 108 and the replacement of the moving handrail speed detection device 20 can be carried out separately.

[0059] In the first and second embodiments, the passenger conveyor 1 is an escalator, but the passenger conveyor 1 may be a moving walkway or the like.

[0060] In the first and second embodiments, the rotating body 41 is described as being disk-shaped, but the shape of the rotating body 41 is not limited to this and may be polygonal (for example, rectangular or hexagonal). The detection object 53 may be removably attached to the rotating body 41 with a screw and a nut.

[0061] Although the above description uses the first and second examples, the number, arrangement, shape, etc. of the detection objects 53 attached to the rotating body 41 are not limited to these. The circumferential length of the detection objects 53 may be changed. In FIG. 9, the case where the rotating body 71 to which the protrusions 71b are fixed is changed to the rotating body 41 is described, but the previous example is the rotating body 41 to which the detection objects 53 are attached, and the method of attaching the detection objects 53 may be changed. The same applies to FIG. 10.

[0062] It should be noted that appropriate combinations, modifications, and omissions of the respective embodiments are also included within the scope of the technical ideas shown in the embodiments.

[0063] Various aspects of the present disclosure are summarized below as appendices. (Appendix 1) a plate-shaped rotating body that has mounting portions that can be detachably mounted to a plurality of locations on the detection object, is attached to the input shaft of the reducer, and rotates in synchronization with the movement of the steps; a sensor that detects the detection object attached to the attachment portion and outputs a signal; a speed calculation unit that calculates the moving speed of the steps based on the signal output by the sensor; A passenger conveyor step speed monitoring device comprising: (Appendix 2) The rotating body is disk-shaped, The attachment portion is formed on the periphery of the rotating body. 1. A passenger conveyor step speed monitoring device as described in appendix 1. (Appendix 3) The mounting portion has a plurality of holes, The detection object is detachably attached to the attachment portion by a screw. 3. A passenger conveyor step speed monitoring device according to claim 1 or 2. (Appendix 4) a motor having a rotation shaft and driving the steps; a reducer having a housing and an input shaft disposed protruding from the housing, the reducer reducing the rotational speed of rotation transmitted from the input shaft and outputting the reduced rotational speed; an input shaft pulley provided on the input shaft and connected to the rotary shaft via a transmission member; a plate-shaped rotating body that is provided on the input shaft so as to be disposed between the housing and the input shaft pulley in the axial direction of the input shaft, has attachment portions to which detection objects can be detachably attached at a plurality of positions, and rotates in synchronization with the movement of the steps; a detection sensor that detects the detection object attached to the attachment portion and outputs a signal; a speed calculation unit that calculates the moving speed of the steps based on the signal output by the sensor; A passenger conveyor drive unit comprising: (Appendix 5) A passenger conveyor comprising a passenger conveyor drive unit according to claim 4. (Appendix 6) a plate-shaped rotating body that has mounting portions to which the detection object can be detachably attached at a plurality of locations and that rotates integrally with a detection roller that is rotatably provided in contact with the moving handrail; a sensor that detects the detection object attached to the attachment portion and outputs a signal; a speed calculation unit that calculates the moving speed of the moving handrail based on the signal output by the sensor; A moving handrail speed monitoring device for a passenger conveyor. [Explanation of symbols]

[0064] 1 passenger conveyor 2 frame 3 Drive unit 4 Transmission Chain 5 First sprocket 6 Second sprocket 7 driven sprocket 8, 108 Control device 11 Step drive chain 12 Steps 15 Moving handrail drive chain 16 Transmission pulley 17 Moving handrail drive device 18 Parapet 19 Moving handrail 20 Moving handrail speed detection device 21 Motor 22 Motor pulley 23 Reducer 24 Input shaft pulley 25 Output shaft pulley 26 Transmission member 27, 127 Speed ​​monitoring device 28, 128 Drive control unit 31 Rotation axis 32 Case 33 Input shaft 34 Output shaft 41 Rotating body 42 sensors 43, 143 Speed ​​monitoring section 51 Shaft hole 52 Mounting part 52a hole 53 Object to be detected 55, 155 Speed ​​calculation section 56, 156 Judgment section Bus 61 62 processors 63 memory 64 Interface 65 Secondary storage 121 Detection roller 122 Rotating arm

Claims

1. a plate-shaped rotating body having attachment parts to which the detection object can be detachably attached at a plurality of locations, the plate-shaped rotating body being attached to the input shaft of the reducer and rotating in synchronization with the movement of the steps; a sensor that detects the detection object attached to the attachment portion and outputs a signal; a speed calculation unit that calculates the moving speed of the steps based on the signal output by the sensor; A passenger conveyor step speed monitoring device comprising:

2. The rotating body is disk-shaped, The attachment portion is formed on the periphery of the rotating body.

2. The step speed monitoring device for a passenger conveyor according to claim 1.

3. The mounting portion has a plurality of holes, The detection object is detachably attached to the attachment portion by a screw.

3. A step speed monitoring device for a passenger conveyor according to claim 1 or 2.

4. a motor having a rotation shaft and driving the steps; a reducer having a housing and an input shaft disposed protruding from the housing, the reducer reducing the rotational speed of rotation transmitted from the input shaft and outputting the reduced rotational speed; an input shaft pulley provided on the input shaft and connected to the rotary shaft via a transmission member; a plate-shaped rotating body that is provided on the input shaft so as to be disposed between the housing and the input shaft pulley in the axial direction of the input shaft, has attachment portions to which detection objects can be detachably attached at a plurality of positions, and rotates in synchronization with the movement of the steps; a detection sensor that detects the detection object attached to the attachment portion and outputs a signal; a speed calculation unit that calculates the moving speed of the steps based on the signal output by the sensor; A passenger conveyor drive unit comprising:

5. A passenger conveyor comprising the passenger conveyor drive unit according to claim 4.

6. a plate-shaped rotating body that has mounting portions to which the detection object can be detachably attached at a plurality of locations and that rotates integrally with a detection roller that is rotatably provided in contact with the moving handrail; a sensor that detects the detection object attached to the attachment portion and outputs a signal; a speed calculation unit that calculates the moving speed of the moving handrail based on the signal output by the sensor; A moving handrail speed monitoring device for a passenger conveyor.

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