Passenger conveyors and steps for passenger conveyors

Abstract

To provide a passenger conveyor capable of cleanly removing oil adhering to an oil pan.SOLUTION: A step 2 includes a scraper 25, a tank 27, a spreader 28, and an operation control unit 41. The scraper 25 is arranged at a storage position that does not protrude from a tread surface 21a, and can be arranged at a cleaning position that protrudes from the tread surface 21a when the step 2 is moving in a second posture. The operation control unit 41 spreads an oil adsorbent over an oil pan 20 by the spreader 28 while the step 2 is moving in the second posture.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to passenger conveyors and steps used in passenger conveyors. [Background technology]

[0002] Patent Document 1 describes a passenger conveyor. The passenger conveyor described in Patent Document 1 includes a plate-shaped member for cleaning the oil pan. The member can remove debris that has accumulated on the oil pan. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-1279 Summary of the Invention [Problem to be solved by the invention]

[0004] In passenger conveyors, lubricating oil is used on moving parts. The lubricating oil drips from the moving parts into the oil pan. As a result, oil adheres to the oil pan. The passenger conveyor described in Patent Document 1 is only equipped with a plate-shaped member for cleaning the oil pan. As a result, it is not possible to completely remove the oil that has adhered to the oil pan.

[0005] The present disclosure has been made to solve the above-mentioned problems. An object of the present disclosure is to provide a passenger conveyor that can cleanly remove oil that has adhered to the oil pan. Another object of the present disclosure is to provide a step for a passenger conveyor that can cleanly remove oil that has adhered to the oil pan. [Means for solving the problem]

[0006] The passenger conveyor according to the present disclosure includes a step that moves on an outbound path in a first position with the tread surface facing upward and moves on a return path in a second position with the tread surface facing downward, an electric motor that drives the step, and an oil pan that is disposed below the step that moves on the return path. The step includes a structure that includes a tread plate on which the tread surface is formed and a support member that supports the tread plate, a scraper that is provided on the structure, is disposed in a storage position that does not protrude from the tread surface, and can be disposed in a cleaning position that protrudes from the tread surface when the step is moving in the second position, and A drive machine that drives the scraper; a tank provided in the structure and containing an oil adsorbent; a sprayer that sprays the oil adsorbent contained in the tank; a posture sensor that detects the posture of the footboard; and based on the posture detected by the posture sensor, and an operation control means for controlling the sprayer and the drive machine. When the step is moving in the second position, the spreader spreads oil absorbent material onto the oil pan. and disposes the scraper in the storage position. When the step subsequently changes from the second position to the first position, the operation control means does not cause the spreader to spray the oil sorbent. When the step subsequently changes from the first position to the second position, the operation control means does not cause the spreader to spray the oil sorbent, and disposes the scraper in the cleaning position by the drive machine. . The passenger conveyor according to the present disclosure includes a step that travels on an outbound path in a first position with its treads facing upward and on a return path in a second position with its treads facing downward, an electric motor for driving the step, and an oil pan disposed below the step as it travels on the return path. The step includes a structure including a tread plate with a tread surface and a support member for supporting the tread plate, a scraper mounted on the structure and positioned in a storage position where it does not protrude from the tread and that can be positioned in a cleaning position where it protrudes from the tread when the step is moving in the second position, a tank mounted on the structure and containing an oil sorbent, a spreader for spreading the oil sorbent stored in the tank, a position sensor for detecting the position of the tread plate, operation control means for causing the spreader to spread the oil sorbent onto the oil pan based on the position detected by the position sensor when the step is moving in the second position, and a sensor for detecting oil on the oil pan. The operation control means adjusts the amount of oil sorbent spread onto the oil pan based on the sensor's detection result.

[0007] The step for a passenger conveyor according to the present disclosure includes a step plate having a tread surface formed thereon, a support member supporting the step plate, and a scraper provided on a structure including the step plate and the support member, the scraper being disposed in a storage position where it does not protrude from the tread surface, and being capable of being disposed in a cleaning position where it protrudes from the tread surface when the step plate is moving in a second position where the tread surface faces downward. A drive machine that drives the scraper; a tank provided in the structure and containing an oil adsorbent; a sprayer that sprays the oil adsorbent contained in the tank; a posture sensor that detects the posture of the footboard; and based on the posture detected by the posture sensor, and an operation control means for controlling the sprayer and the drive machine. When the pedal is moving in the second position, the spreader spreads oil absorbent material. and disposes the scraper in the storage position. When the tread plate subsequently changes from the second position to the first position in which the tread surface faces upward, the operation control means does not cause the spreader to spray the oil sorbent. When the tread plate subsequently changes from the first position to the second position, the operation control means does not cause the spreader to spray the oil sorbent, and disposes the scraper in the cleaning position by the drive mechanism. . [Effects of the Invention]

[0008] According to the present disclosure, oil adhering to an oil pan in a passenger conveyor can be cleanly removed. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 2 is a diagram showing an example of a passenger conveyor according to the first embodiment. [Figure 2]FIG. 2 is a plan view showing a step in the first embodiment. [Figure 3] FIG. 10 is a diagram for explaining the function of a step. [Figure 4] FIG. 10 is a diagram schematically illustrating steps of moving forward and steps of moving backward. [Figure 5] 10 is a flowchart showing an example of step operation. [Figure 6] FIG. 5 is a view of the tip of the scraper as seen from the direction A shown in FIG. 4. [Figure 7] 10 is a flowchart showing another example of the operation of the step. [Figure 8] FIG. 2 illustrates an example of hardware resources of a control device. [Figure 9] FIG. 10 is a diagram illustrating another example of hardware resources of a control device. DETAILED DESCRIPTION OF THE INVENTION

[0010] The following detailed description will be given with reference to the drawings. Duplicate descriptions will be simplified or omitted as appropriate. In each drawing, the same reference numerals indicate the same or corresponding parts.

[0011] Embodiment 1 Fig. 1 is a diagram showing an example of a passenger conveyor in embodiment 1. Fig. 1 shows an escalator as an example of a passenger conveyor. Passenger conveyors also include moving walkways.

[0012] The escalator comprises a truss 1 and steps 2. The truss 1 spans the upper and lower floors. Passengers ride on the steps 2 to move from the boarding entrance 3 to the exit 4. That is, FIG. 1 shows an upward escalator.

[0013] A machinery room 5 is provided below the entrance 3. The machinery room 5 is a space formed inside the truss 1. The machinery room 5 is closed by a floor plate 6. The floor plate 6 forms the floor of the entrance 3. Passengers transfer from the floor plate 6 to the step 2.

[0014] A machine room 7 is provided below the exit 4. The machine room 7 is a space formed inside the truss 1. The machine room 7 is closed by a floor plate 8. The floor plate 8 forms the floor of the exit 4. Passengers move from the step 2 to the floor plate 8.

[0015] An electric motor 9 and a control device 10 are provided in the machine room 7. The electric motor 9 drives the steps 2. The control device 10 controls the electric motor 9. For example, the electric motor 9 rotates a shaft 12 provided in the machine room 7 via a reducer 11. A sprocket 13 is provided on the shaft 12. A step chain 14 is wound around the sprocket 13. A number of step shafts 15 are provided on the step chain 14. A step 2 is fixed to each step shaft 15. In this way, a number of steps 2 are connected to the step chain 14.

[0016] The step 2 moves by being pulled by the step chain 14. Because the step chain 14 is endless, the step 2 moves in a circular motion. In the example shown in this embodiment, the step 2 emerges from under the floor board 6 at the entrance 3 and moves on the outbound path toward the exit 4. Passengers board the step 2 as it moves on the outbound path. Therefore, the step 2 moves on the outbound path while maintaining a specific posture. Hereinafter, the posture of the step 2 moving on the outbound path will also be referred to as the first posture. Skirt guards 16 are provided on both sides of the step 2 as it moves on the outbound path. The step 2 moves on the outbound path along the skirt guards 16.

[0017] Step 2 enters under floorboard 8 at exit 4 and reverses in machine room 7. After being reversed in machine room 7, step 2 moves back inside truss 1 toward machine room 5. Step 2 moves back in the reversed position. Hereinafter, the position of step 2 moving back is also referred to as the second position. Because lubricating oil is used in step chain 14, etc., an oil pan 20 is provided on truss 1. Lubricating oil drips from step chain 14, etc. As a result, oil adheres to oil pan 20. Oil pan 20 is located below step 2 moving back. Step 2 returns to the first position by reversing again in machine room 5 and reappears from under floorboard 6.

[0018] As described above, a large number of steps 2 are connected to the step chain 14. In the example shown in this embodiment, some of the steps 2 connected to the step chain 14 have the function of thoroughly removing oil adhering to the oil pan 20. An escalator may be provided with only one step 2 having such a function. In the following, the step having this function will be designated by the symbol 2A to distinguish it from other steps 2, i.e., steps 2 that do not have this function. Note that the functions of step 2A other than the function of removing oil adhering to the oil pan 20 are the same as the functions of the other steps 2.

[0019] Fig. 2 is a plan view showing step 2A in embodiment 1. Fig. 2 shows the configuration of the inside of skirt guard 16. Fig. 3 is a diagram for explaining the function of step 2A.

[0020] Step 2A includes a step 21, a riser 22, a support member 23, a roller 24, a scraper 25, a driving machine 26, a tank 27, a spreader 28, a position sensor 29, a control device 30, and a battery 31. The step 21, riser 22, support member 23, and roller 24 are also included in other steps 2.

[0021] A tread surface 21a is formed on the step board 21. The tread surface 21a is the surface on which passengers stand. The step board 21 is supported by a support member 23. FIG. 4 is a diagram schematically showing a step 2A moving in the outbound path and a step 2A moving in the return path. In the first position, the tread surface 21a faces upward. In the second position, the tread surface 21a faces downward.

[0022] The riser 22 is a curved plate-like member. The riser 22 is arranged so as to extend downward from the edge of the tread 21 when the step 2A moves forward. The riser 22 is supported by a support member 23. The support member 23 is fixed to the step shaft 15. The roller 24 is rotatably mounted on the support member 23.

[0023] The escalator is provided with rails 17a and 17b for guiding the movement of step 2A on the outward path. Rails 17a and 17b are supported by truss 1. When step 2A moves on the outward path, roller 24 rolls on rail 17a. Also, as shown in FIG. 2, a number of rollers 18 are rotatably mounted on step chain 14. Rollers 18 may be rotatably mounted on step shaft 15. When step 2A moves on the outward path, roller 18 rolls on rail 17b. Rails 17a and 17b maintain the posture of step 2 moving on the outward path, i.e., the first posture.

[0024] Similarly, the escalator is provided with rails 19a and 19b for guiding the return movement of step 2A. Rails 19a and 19b are supported by truss 1. When step 2A moves on the return path, roller 24 rolls on rail 19a. Also, when step 2A moves on the return path, roller 18 rolls on rail 19b. Rails 19a and 19b maintain the posture of step 2 moving on the return path, i.e., the second posture.

[0025] The scraper 25, the driving machine 26, the tank 27, the spreader 28, the attitude sensor 29, the control device 30, and the battery 31 are provided on the structure of step 2. The structure of step 2 includes the footplate 21, the riser 22, and the support member 23. For example, the scraper 25, the driving machine 26, the tank 27, the spreader 28, the attitude sensor 29, the control device 30, and the battery 31 are fixed to the footplate 21.

[0026] Scraper 25 is a spatula-shaped member used to clean the surface of oil pan 20. Dirt stuck to the surface of oil pan 20 is scraped off by scraper 25. Scraper 25 is attached to footboard 21 via shaft 32. Shaft 32 extends to the left and right as seen by a passenger on step 2A facing the direction of movement of step 2A.

[0027] The scraper 25 is displaceable around an axis 32 relative to the tread 21. The scraper 25 can be placed in a storage position where it does not protrude from the tread surface 21a, and in a cleaning position where it protrudes from the tread surface 21a.

[0028] The driving machine 26 drives the scraper 25. That is, the driving machine 26 rotates the scraper 25 around the shaft 32.

[0029] An oil sorbent is stored in the tank 27. The oil sorbent is preferably a powdered chemical. The tank 27 is provided with a refill port for refilling the oil sorbent.

[0030] The spreader 28 spreads the oil sorbent stored in the tank 27. As an example, a spreader port 28a for spreading the oil sorbent is formed in the tread surface 21a.

[0031] The attitude sensor 29 detects the attitude of the step board 21. In the example shown in this embodiment, the attitude of the step board 21 and the attitude of the step 2A are synonymous. For example, the step 2A is equipped with a gyro sensor as the attitude sensor 29. The step 2A may also be equipped with an acceleration sensor as the attitude sensor 29.

[0032] The control device 30 includes an operation control unit 41 and a determination unit 42. The operation control unit 41 controls the driving machine 26. The operation control unit 41 also controls the spreader 28.

[0033] The power required for each of the driving machine 26, the sprayer 28, the attitude sensor 29, and the control device 30 is supplied from a battery 31.

[0034] FIG. 5 is a flowchart showing an example of the operation of step 2A.

[0035] The control device 30 determines whether a power switch (not shown) is on or not (S101). As an example, the power switch is manually switched on and off by an elevator maintenance worker.

[0036] When the power switch is turned on (Yes in S101), the operation control unit 41 controls the driving machine 26 to place the scraper 25 in the storage position as an initial setting (S102). The operation control unit 41 also turns off the spreader 28 as an initial setting (S102). If the spreader 28 is off, the oil sorbent is not spread.

[0037] If the determination in S101 is Yes, the determination unit 42 determines whether the step 2A is in the first posture (S103). The determination in S103 is made based on the posture of the tread 21 detected by the posture sensor 29. In S103, the determination unit 42 may determine whether the step 2A is moving in the first posture.

[0038] If the determination in S103 is No, the determination unit 42 determines whether the step 2A is in the second posture (S104). The determination in S104 is made based on the posture of the tread 21 detected by the posture sensor 29. In S104, the determination unit 42 may determine whether the step 2A is moving in the second posture.

[0039] When the elevator maintenance person turns on the power switch and starts normal operation, step 2A moves in the outward direction, for example, toward exit 4. If step 2A is moving in the outward direction, the determination in S103 is Yes.

[0040] If the determination in S103 is Yes, the operation control unit 41 controls the driving machine 26 to place the scraper 25 in the storage position (S105). As a result, when the step 2A is moving on the outward path in the first posture, the scraper 25 is not placed in the cleaning position. Also, in S105, the operation control unit 41 turns off the spreader 28. As a result, when the step 2A is moving on the outward path in the first posture, the oil sorbent is not spread.

[0041] While step 2A is moving on the outward path in the first posture, S103 determines Yes, and processing of S105 is performed. Step 2A enters under floorboard 8 at exit 4 and reverses in machine room 7. This results in a No determination in S103. Step 2A that has reversed in machine room 7 moves on the return path from top to bottom toward machine room 5. If step 2A is moving on the return path, S104 determines Yes.

[0042] If the determination in S104 is Yes, the operation control unit 41 controls the driving machine 26 to place the scraper 25 in the cleaning position (S106). As a result, the scraper 25 moves downward while keeping its tip in contact with the surface of the oil pan 20. FIG. 6 is a view of the tip of the scraper 25 as viewed from direction A in FIG. 4. The tip of the scraper 25 is preferably V-shaped so that debris on the oil pan 20 will gather in the center of the oil pan 20.

[0043] Furthermore, in S106, the operation control unit 41 turns on the spreader 28. As a result, when the step 2A is moving on the return path in the second posture, the oil sorbent stored in the tank 27 is spread onto the oil pan 20 by the spreader 28. It is preferable that the spreader port 28a is disposed further forward in the direction of movement of the step 2A than the scraper 25. This allows the scraper 25 to collect the oil sorbent that has adsorbed oil on the oil pan 20.

[0044] In the example shown in this embodiment, step 2A is equipped with scraper 25 and spreader 28. Operation control unit 41 controls driving machine 26 and spreader 28 based on the attitude of step 2A detected by attitude sensor 29. Therefore, in the example shown in this embodiment, the oil adsorbent spread on oil pan 20 can be collected by scraper 25, and oil adhering to oil pan 20 can be completely removed.

[0045] In this embodiment, an example has been described in which step 2A is permanently installed on the escalator as one of the steps 2. As another example, step 2A may be attached to step shaft 15 only when cleaning oil pan 20, such as during periodic inspection. In such a case, the escalator maintenance technician first removes one of steps 2 from step shaft 15. Then, the maintenance technician attaches step 2A to that step shaft 15 and turns on the power switch. After cleaning oil pan 20 is complete, the maintenance technician removes step 2A from step shaft 15. Then, the maintenance technician simply attaches the original step 2 to that step shaft 15.

[0046] Step 2A may further include a sensor 33, as shown in Fig. 3. In such a case, the control device 30 further includes a sensor control unit 43. The sensor control unit 43 controls the sensor 33. The sensor 33 has a function of detecting oil on the oil pan 20. As an example, the sensor 33 includes a light source 33a. The light source 33a emits light in the direction in which the tread 21a faces.

[0047] If step 2A is equipped with sensor 33, when S104 returns Yes, sensor control unit 43 turns on sensor 33. As a result, light is emitted from light source 33a toward oil pan 20 while step 2A is moving backward in the second posture. Sensor 33 detects the amount of oil in oil pan 20 based on the light reflected from oil pan 20. Sensor 33 may detect the amount of oil continuously or in a specified number of steps.

[0048] If the determination in S104 is Yes, the operation control unit 41 turns on the sprayer 28 in S106. At this time, the operation control unit 41 may adjust the amount of oil adsorbent to be sprayed into the oil pan 20 based on the amount of oil detected by the sensor 33. For example, the operation control unit 41 increases the amount of oil adsorbent to be sprayed into the oil pan 20 as the amount of oil detected by the sensor 33 increases.

[0049] Fig. 7 is a flowchart showing another example of the operation of step 2A. The processes shown in S201 to S205 in Fig. 7 are the same as the processes shown in S101 to S105 in Fig. 5. In the example shown in Fig. 5, if the determination in S104 is Yes, cleaning with the scraper 25 and spraying of oil sorbent are performed simultaneously. In contrast to this, Fig. 7 shows an example in which, if the determination in S204 is Yes, cleaning with the scraper 25 is performed a certain time after the spraying of oil sorbent has ended.

[0050] If the determination in S204 is Yes, the operation control unit 41 controls the driving machine 26 to place the scraper 25 in the storage position (S206). Also, in S206, the operation control unit 41 turns on the spreader 28. That is, immediately after the determination in S204 is Yes, the oil adsorbent is spread on the oil pan 20, but cleaning by the scraper 25 is not performed.

[0051] Thereafter, the determination unit 42 determines whether the step 2A is in the second position (S207). If the position of the step 2A has not changed after the determination in S204 is "Yes", the determination in S207 is "Yes". Thereafter, the step 2A is reversed in the machine room 5. As a result, the determination in S207 is "No". If the determination in S207 is "No", the operation control unit 41 turns off the spreader 28 (S208). As a result, the spread of the oil sorbent is no longer performed. Also, in S208, the scraper 25 remains disposed in the storage position.

[0052] Thereafter, the determination unit 42 determines whether the step 2A is in the second position (S209). After the step 2A is turned around in the machine room 5, it moves forward in the first position. While the step 2A is moving forward in the first position, the determination in S209 is No. Thereafter, the step 2A is turned around in the machine room 7, and it changes from the first position to the second position. As a result, the determination in S209 is Yes.

[0053] If the determination in S209 is Yes, the operation control unit 41 controls the driving machine 26 to place the scraper 25 in the cleaning position (S210). As a result, the scraper 25 moves downward while keeping its tip in contact with the surface of the oil pan 20. That is, cleaning is performed by the scraper 25. Also, in S210, the spreader 28 remains off.

[0054] Thereafter, the determination unit 42 determines whether the step 2A is in the second position (S211). If the position of the step 2A has not changed after the determination in S209 was "Yes," the determination in S211 is "Yes." Thereafter, the step 2A is reversed in the machine room 5 and changes from the second position to the first position. As a result, the determination in S211 is "No."

[0055] In the example shown in FIG. 7 , oil adsorbent is first sprayed onto the oil pan 20, and after a certain time has elapsed, cleaning can be performed using the scraper 25. In the example shown in FIG. 7 , the certain time is the time from when S207 is determined to be No until S209 is determined to be Yes. The certain time may be adjusted by stopping step 2A after S207 is determined to be No. As another example, after S207 is determined to be No, step 2A may be moved forward and backward a certain number of times before S209 is determined to be Yes. For example, after S207 is determined to be No, switching from the first position to the second position may be performed three times, thereby resulting in a Yes determination in S209. Even in the example shown in FIG. 7 , oil adhering to the oil pan 20 can be completely removed.

[0056] 8 is a diagram showing an example of hardware resources of the control device 30. The control device 30 includes, as hardware resources, a processing circuit 50 including a processor 51 and a memory 52. ​​The processing circuit 50 may include multiple processors 51. The processing circuit 50 may include multiple memories 52.

[0057] In this embodiment, the units denoted by reference numerals 41 to 43 indicate functions possessed by the control device 30. The functions of the units denoted by reference numerals 41 to 43 can be realized by software written as a program, firmware, or a combination of software and firmware. The program is stored in memory 52. ​​The control device 30 realizes the functions of the units denoted by reference numerals 41 to 43 by executing the program stored in memory 52 using a processor 51. A semiconductor memory or the like can be used as the memory 52.

[0058] Fig. 9 is a diagram showing another example of hardware resources of the control device 30. In the example shown in Fig. 9, the control device 30 includes a processing circuit 50 including a processor 51, a memory 52, and dedicated hardware 53. Fig. 9 shows an example in which some of the functions of the control device 30 are realized by the dedicated hardware 53. All of the functions of the control device 30 may also be realized by the dedicated hardware 53. The dedicated hardware 53 may be a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof. [Explanation of symbols]

[0059] 1 truss, 2 step, 3 entrance, 4 exit, 5 machine room, 6 floor board, 7 machine room, 8 floor board, 9 electric motor, 10 control device, 11 reducer, 12 shaft, 13 sprocket, 14 step chain, 15 step shaft, 16 skirt guard, 17a-17b rail, 18 roller, 19a-19b rail, 20 oil pan, 21 step, 21a tread, 22 riser, 23 support member, 24 roller, 25 scraper, 26 drive unit, 27 tank, 28 spreader, 28a spray nozzle, 29 attitude sensor, 30 control device, 31 battery, 32 shaft, 33 sensor, 33a light source, 41 Operation control unit, 42 determination unit, 43 sensor control unit, 50 processing circuit, 51 processor, 52 memory, 53 dedicated hardware

Claims

1. a step of moving on an outward path in a first posture in which the tread surface faces upward, and moving on a return path in a second posture in which the tread surface faces downward; an electric motor for driving the step; an oil pan disposed below the step that moves in the return path; Equipped with The steps include: a structure including a tread plate on which the tread surface is formed and a support member supporting the tread plate; a scraper provided on the structure, disposed in a storage position where it does not protrude from the tread surface, and capable of being disposed in a cleaning position where it protrudes from the tread surface when the step is moving in the second position; A drive machine that drives the scraper; a tank provided in the structure and containing an oil sorbent; a sprayer that sprays the oil sorbent stored in the tank; a posture sensor for detecting the posture of the footboard; an operation control means for controlling the sprayer and the driving machine based on the attitude detected by the attitude sensor; Equipped with The operation control means When the step is moving in the second position, the oil sorbent is spread onto the oil pan by the spreader, and the scraper is placed at the storage position. Thereafter, when the step changes from the second position to the first position, the oil sorbent is not sprayed by the sprayer, When the step then changes from the first position to the second position, the driver does not spray oil adsorbent, and the scraper is placed in the cleaning position.

2. A passenger conveyor as described in claim 1, wherein the electric motor stops the step for a certain period of time when the step changes from the second position to the first position after the oil absorbent material has been sprayed by the sprayer.

3. 2. The passenger conveyor according to claim 1, wherein the operation control means causes the drive machine to position the scraper at the cleaning position by switching from the first position to the second position a specific number of times after the step changes from the second position to the first position after the oil adsorbent has been sprayed by the sprayer.

4. A tread plate having a tread surface formed thereon; A support member that supports the tread; a scraper that is provided on a structure including the tread and the support member, that is disposed in a storage position where it does not protrude from the tread surface, and that can be disposed in a cleaning position where it protrudes from the tread surface when the tread is moving in a second position where the tread surface faces downward; A drive machine that drives the scraper; a tank provided in the structure and containing an oil sorbent; a sprayer that sprays the oil sorbent stored in the tank; a posture sensor for detecting the posture of the footboard; an operation control means for controlling the sprayer and the driving machine based on the attitude detected by the attitude sensor; Equipped with The operation control means When the tread is moving in the second position, the oil sorbent is spread by the spreader, and the scraper is placed in the storage position. Thereafter, when the tread plate changes from the second position to the first position in which the tread surface faces upward, the oil sorbent is not sprayed by the sprayer, When the footplate subsequently changes from the first position to the second position, the driver positions the scraper at the cleaning position without the sprayer spraying oil absorbent.

5. A step for a passenger conveyor as described in Claim 4, wherein the operation control means causes the drive machine to position the scraper at the cleaning position by switching from the first position to the second position after the oil absorbent material has been sprayed by the sprayer, and then switching from the first position to the second position a specific number of times.

6. a step of moving on an outward path in a first posture in which the tread surface faces upward, and moving on a return path in a second posture in which the tread surface faces downward; an electric motor for driving the step; an oil pan disposed below the step that moves in the return path; Equipped with The steps include: a structure including a tread plate on which the tread surface is formed and a support member supporting the tread plate; a scraper provided on the structure, disposed in a storage position where it does not protrude from the tread surface, and capable of being disposed in a cleaning position where it protrudes from the tread surface when the step is moving in the second position; a tank provided in the structure and containing an oil sorbent; a sprayer that sprays the oil sorbent stored in the tank; a posture sensor for detecting the posture of the footboard; an operation control means for causing the spreader to spread oil sorbent onto the oil pan based on the attitude detected by the attitude sensor when the step is moving in the second attitude; a sensor for detecting oil on the oil pan; Equipped with The operation control means is a passenger conveyor that adjusts the amount of oil adsorbent to be sprayed onto the oil pan based on the detection results of the sensor.

7. The step further includes a sensor control unit that controls the sensor, The sensor includes a light source that emits light in a direction in which the tread faces; The passenger conveyor according to claim 6, wherein the sensor control unit emits light from the light source toward the oil pan when the step is moving in the second position.

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