Passenger conveyor floor plate device

Abstract

Provided is a floor panel device for a passenger conveyor that can suppress a decrease in the efficiency of maintenance and inspection work. [Solution] In a lower floor panel device 11 of an escalator, a slide member 232 is capable of sliding in a long hole 234 in a direction along the long hole 234 relative to a fixed guide member 231. A connecting member 233 connects a movable floor panel 22 and the slide member 232. The movable floor panel 22 is displaced toward the open position by rotating relative to the truss 1 from the covered position to the outside of the lower machine room 11. The slide member 232 slides in the long hole 234 relative to the fixed guide member 231 in a direction in which a winding device 242 winds up a wire 241, thereby displacing the movable floor panel 22 from the covered position toward the open position.

Description

[Technical field]

[0001] The present disclosure relates to a passenger conveyor floor plate arrangement. [Background technology]

[0002] Patent Document 1 discloses a manhole cover device for an escalator that opens a manhole by dropping a manhole cover that covers the manhole into the manhole during maintenance and inspection work of the escalator. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 8-73162 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the conventional escalator manhole cover device disclosed in the above-mentioned Patent Document 1, the manhole cover is dropped into the inside of the manhole, so the space inside the manhole is narrowed by the manhole cover, which reduces the work efficiency of maintenance and inspection work inside the manhole.

[0005] The present disclosure is devised to solve the above-mentioned problems, and aims to provide a floor panel device for a passenger conveyor that can suppress a decrease in the work efficiency of maintenance and inspection work. [Means for solving the problem]

[0006] The floor panel device of the passenger conveyor according to the present disclosure comprises a movable floor panel that can be displaced between a covered position that covers an opening formed in an upper part of the machine room in the truss and an open position that opens the opening, a fixed guide member that is fixed to the truss and has a long hole formed therein, a slide member that is attached to the fixed guide member and can slide along the long hole in a direction along the long hole relative to the fixed guide member, a connecting member that connects the movable floor panel and the slide member and displaces the movable floor panel between the covered position and the open position in response to the sliding of the slide member relative to the fixed guide member, a wire connected to the slide member, and a winding device that is fixed to the truss and winds and unwinds the wire, and the movable floor panel is displaced from the covered position toward the open position by rotating relative to the truss to the outside of the machine room, and the slide member slides along the long hole relative to the fixed guide member in the direction in which the winding device winds up the wire, thereby displacing the movable floor panel from the covered position toward the open position. Effect of the Invention

[0007] According to the passenger conveyor floor panel device of the present disclosure, it is possible to suppress a decrease in the work efficiency of maintenance and inspection work. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a configuration diagram showing an escalator as a passenger conveyor according to a first embodiment. [Diagram 2] FIG. 2 is a top view showing the lower floor plate device of FIG. [Diagram 3] 3 is a front view showing the lower floor panel device as viewed along the arrow III in FIG. 2. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. [Diagram 5] FIG. 3 is a cross-sectional view taken along line VV in FIG. [Figure 6] FIG. 3 is a cross-sectional view taken along line VI-VI in FIG. [Figure 7] 7 is a partially cutaway cross-sectional view showing a state in which the movable floor panel of FIG. 6 is located at a position intermediate between a covering position and an opening position. [Figure 8] FIG. 7 is an enlarged cross-sectional view showing the winding device of FIG. [Figure 9] FIG. 3 is a cross-sectional view taken along line IX-IX in FIG. [Figure 10] 8 is a partially cutaway cross-sectional view showing a state in which the movable floor plate in FIG. 7 is located at an open position. [Figure 11] 11 is a partially cutaway cross-sectional view showing the lower floor panel device when the ladder in FIG. 10 is in the extended position and in the extended state. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The embodiments for carrying out the subject of the present disclosure will be described with reference to the attached drawings. In each drawing, the same or corresponding parts are given the same reference numerals, and duplicated descriptions are appropriately simplified or omitted. Note that the subject of the present disclosure is not limited to the following embodiments, and any component of the embodiment may be modified or omitted within the scope of the gist of the present disclosure.

[0010] Embodiment 1 FIG. 1 is a configuration diagram showing an escalator as a passenger conveyor according to the first embodiment. In the figure, a truss 1 is installed between a lower floor and an upper floor. The truss 1 is a frame body formed of a plurality of angle bars. One longitudinal end of the truss 1 is hung on a structure (not shown) on the lower floor as the lower end of the truss 1. The other longitudinal end of the truss 1 is hung on a structure (not shown) on the upper floor as the upper end of the truss 1. The width direction of the truss 1 coincides with the horizontal direction perpendicular to the longitudinal direction of the truss 1.

[0011] A lower machine room 11 is provided at the lower end of the truss 1. A lower floor panel device 2 is provided above the lower machine room 11. The lower floor panel device 2 is a floor panel device supported by the truss 1 as a floor for the lower entrance and exit of the escalator on the lower floor.

[0012] An upper machine room 12 is provided at the upper end of the truss 1. An upper floor plate device 3 is provided above the upper machine room 12. The upper floor plate device 3 is a floor plate device supported by the truss 1 as a floor for the upper entrance and exit of the escalator on the upper floor.

[0013] A lower sprocket 4 is provided inside the lower machine room 11 as machine room internal equipment. An upper sprocket 5, a driving machine (not shown), and a control panel (not shown) are provided inside the upper machine room 12 as machine room internal equipment.

[0014] A plurality of steps 6 are supported on the truss 1. The steps 6 are endlessly connected by a step chain 7. The step chain 7 is wound around a lower sprocket 4 and an upper sprocket 5.

[0015] The driving machine generates a driving force for circulating each step 6. The control panel controls the driving machine. The upper sprocket 5 rotates by receiving the driving force from the driving machine. Each step 6 circulates between the lower machine room 11 and the upper machine room 12 by the rotation of the upper sprocket 5.

[0016] A pair of balustrades 8 facing each other in the width direction of the truss 1 is provided on the truss 1. An endless movable handrail 9 is individually provided on the peripheral portion of each balustrade 8. Each movable handrail 9 moves on the peripheral portion of each balustrade 8 in synchronization with each step 6 by the driving force of a driving machine.

[0017] Fig. 2 is a top view showing the lower floor panel device 2 of Fig. 1. Fig. 3 is a front view showing the lower floor panel device 2 as viewed along the arrow III of Fig. 2. Fig. 4 is a cross-sectional view taken along the line IV-IV of Fig. 2. Fig. 5 is a cross-sectional view taken along the line VV of Fig. 2. A first support beam 13 and a second support beam 14 are disposed at the upper part of the lower machine room 11. Each of the first support beam 13 and the second support beam 14 is fixed to the truss 1.

[0018] The first support beam 13 and the second support beam 14 are arranged at a distance from each other in the longitudinal direction of the truss 1. The first support beam 13 and the second support beam 14 are each arranged along the width direction of the truss 1. The second support beam 14 is arranged at a position closer to the middle part of the truss 1 than the first support beam 13 in the longitudinal direction of the truss 1. The first support beam 13 is arranged on the edge of an opening formed in the upper part of the lower machine room 11.

[0019] The lower floor plate device 2 is supported by the truss 1 via a first support beam 13 and a second support beam 14. As shown in FIG. 2 , the lower floor plate device 2 has a pair of fixed floor plates 21, a movable floor plate 22, a pair of movable mechanism parts 23, an operation mechanism part 24, and a ladder 25.

[0020] A pair of fixed floor plates 21 are fixed to the truss 1 while being supported by the first support beam 13 and the second support beam 14. The fixed floor plates 21 are respectively disposed at both ends of the lower machine room 11 in the width direction of the truss 1 when the lower machine room 11 is viewed from above.

[0021] The movable floor plate 22 is disposed between a pair of fixed floor plates 21. A pair of floor plate shafts 221 are fixed to the end of the movable floor plate 22 on the first support beam 13 side, as shown in Fig. 2. The pair of floor plate shafts 221 protrude from the movable floor plate 22 to both outsides of the movable floor plate 22 in the width direction of the truss 1. The pair of floor plate shafts 221 are located on a single axis line along the width direction of the truss 1.

[0022] A pair of rotation support members 15 are fixed to the first support beam 13. The pair of rotation support members 15 are provided on the edge of an opening formed in the upper part of the lower machine room 11. The pair of rotation support members 15 are located on both sides of the movable floor plate 22 in the width direction of the truss 1. The pair of rotation support members 15 are arranged corresponding to a pair of floor plate shafts 221. Each floor plate shaft 221 is provided on a corresponding rotation support member 15. As a result, the movable floor plate 22 is supported by the pair of rotation support members 15 via each floor plate shaft 221.

[0023] FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 2. The movable floor plate 22 is rotatable relative to the truss 1 around the axis of the floor plate shaft 221 provided on the rotation support member 15. The movable floor plate 22 is displaceable between a covering position and an opening position by changing the rotation angle of the movable floor plate 22 relative to the truss 1. The covering position is a position of the movable floor plate 22 that covers the opening formed in the upper part of the lower machine room 11. The opening position is a position of the movable floor plate 22 that opens the opening formed in the upper part of the lower machine room 11. Note that FIG. 6 shows a state in which the movable floor plate 22 is positioned at the covering position. Hereinafter, the opening formed in the upper part of the lower machine room 11 will be referred to as the "upper opening of the lower machine room 11."

[0024] When the movable floor plate 22 is positioned at the covering position, the movable floor plate 22 covers the upper opening of the lower machine room 11 between the pair of fixed floor plates 21. When the movable floor plate 22 is positioned at the covering position, the movable floor plate 22 is supported by each of the first support beams 13 and the second support beams 14.

[0025] When the movable floor plate 22 is in the open position, it is located outside the lower machine room 11 relative to the covered position. As a result, the movable floor plate 22 is displaced from the covered position to the open position by rotating relative to the truss 1 to the outside of the lower machine room 11. In this embodiment, the movable floor plate 22 is displaced from the covered position to the open position by rotating upward relative to the truss 1. When the movable floor plate 22 is in the open position, the upper opening of the lower machine room 11 is opened between the pair of fixed floor plates 21. When the movable floor plate 22 is in the open position, the movable floor plate 22 is separated from the second support beam 14.

[0026] 2, the pair of movable mechanism parts 23 are provided on both sides of the movable floor plate 22 in the width direction of the truss 1. Each movable mechanism part 23 has a fixed guide member 231, a slide member 232, and a connecting member 233. Of the pair of movable mechanism parts 23, the fixed guide member 231 of one movable mechanism part 23 is fixed to one fixed floor plate 21, and the fixed guide member 231 of the other movable mechanism part 23 is fixed to the other fixed floor plate 21. Therefore, each fixed guide member 231 is fixed to the truss 1.

[0027] The fixed guide member 231 is a plate arranged on a plane perpendicular to the axis of the floorboard axis 221. As shown in FIG. 6, the fixed guide member 231 is provided with a long hole 234. In this embodiment, the long hole 234 is provided in each fixed guide member 231 along the longitudinal direction of the truss 1. Of both ends of the long hole 234, one end of the long hole 234 is located closer to the floorboard axis 221 than the other end of the long hole 234. The long hole 234 penetrates the fixed guide member 231.

[0028] The slide member 232 is attached to the fixed guide member 231 in a state where it is inserted into the elongated hole 234. The slide member 232 is capable of sliding in the elongated hole 234 in a direction along the elongated hole 234 relative to the fixed guide member 231. The distance from the floor board axis 221 to the slide member 232 changes as the slide member 232 slides relative to the fixed guide member 231.

[0029] Here, Fig. 7 is a partially cutaway cross-sectional view showing a state in which the movable floor plate 22 in Fig. 6 is located at an intermediate position between the covered position and the open position. The connecting member 233 connects the movable floor plate 22 and the slide member 232. One end of the connecting member 233 is rotatably attached to the slide member 232. The other end of the connecting member 233 is rotatably attached to the movable floor plate 22 via a protrusion 222 fixed to the movable floor plate 22. The protrusion 222 is fixed to a side of the movable floor plate 22 in the width direction of the truss 1. In each movable mechanism unit 23, the slide member 232 slides relative to the fixed guide member 231 while the connecting member 233 moves in conjunction with the change in the rotation angle of the movable floor plate 22 relative to the truss 1.

[0030] When the slide member 232 slides relative to the fixed guide member 231 in a direction approaching the floor board axis 221 in each movable mechanism part 23, the movable floor board 22 is displaced from the covering position to the opening position while the connecting member 233 pushes up the movable floor board 22. Also, when the slide member 232 slides relative to the fixed guide member 231 in a direction away from the floor board axis 221 in each movable mechanism part 23, the movable floor board 22 is displaced from the opening position to the covering position while the connecting member 233 supports the movable floor board 22. Therefore, the connecting member 233 rotates the movable floor board 22 relative to the truss 1 in accordance with the sliding of the slide member 232 relative to the fixed guide member 231.

[0031] 6, when the movable floor plate 22 is in the covering position, the center position of the protrusion 222 is higher than the center line of the long hole 234. This makes it easier for the connecting member 233 to push up the movable floor plate 22 when the sliding member 232 slides relative to the fixed guide member 231 in the direction approaching the floor plate axis 221.

[0032] The operation mechanism 24 has a wire 241 and a winding device 242. The wire 241 is connected to the slide member 232 in one of the movable mechanism parts 23.

[0033] The winding device 242 is a device that winds and unwinds the wire 241. The winding device 242 is fixed to one of the fixed floor plates 21. As a result, the winding device 242 is fixed to the truss 1. The winding device 242 is disposed at a position closer to the floor plate axis 221 than the fixed guide member 231.

[0034] As the winding device 242 winds up the wire 241, the sliding member 232 slides in the long hole 234 relative to the fixed guide member 231 in a direction approaching the bed shaft 221 against the weight of the movable bed plate 22. As a result, the movable bed plate 22 is displaced from the covering position toward the opening position. That is, as the sliding member 232 slides in the long hole 234 relative to the fixed guide member 231 in the direction in which the winding device 242 winds up the wire 241, the movable bed plate 22 is displaced from the covering position toward the opening position.

[0035] As the winding device 242 reels out the wire 241, the sliding member 232 slides in the long hole 234 relative to the fixed guide member 231 in a direction away from the bed board shaft 221 while bearing the weight of the movable bed board 22. This causes the movable bed board 22 to be displaced from the open position toward the covered position. That is, as the sliding member 232 slides in the long hole 234 relative to the fixed guide member 231 in the direction in which the winding device 242 reels out the wire 241, the movable bed board 22 is displaced from the open position toward the covered position.

[0036] The winding device 242 is fixed to the back surface of one of the fixed bed plates 21. An operation hole 211 is provided in one of the fixed bed plates 21 in accordance with the position of the winding device 242. An operation tool 243 is fitted into the winding device 242 from above the fixed bed plate 21 through the operation hole 211. As the operation tool 243, for example, an operation tool with an electric motor is used. The winding device 242 winds and unwinds the wire 241 in response to the rotation of the operation tool 243 fitted into the winding device 242.

[0037] Fig. 8 is an enlarged cross-sectional view showing the winding device 242 of Fig. 6. The winding device 242 has a case 244, a winding shaft 245, and a pair of bearings 246.

[0038] The case 244 is a cylindrical case fixed to the rear surface of the fixed bed plate 21. The inside of the case 244 is open to the upper part of the fixed bed plate 21 through the operation hole 211.

[0039] The winding shaft 245 is housed inside the case 244 with the axis of the winding shaft 245 in the up-down direction. The winding shaft 245 is rotatably supported by the case 244 via a pair of bearings 246. The wire 241 is connected to the winding shaft 245. The winding shaft 245 rotates around the axis of the winding shaft 245 inside the case 244 to wind and unwind the wire 241.

[0040] The upper end of the winding shaft 245 forms a fitting portion 245a. The operating tool 243 inserted into the inside of the case 244 through the operation hole 211 fits into the fitting portion 245a. The winding shaft 245 rotates relative to the case 244 together with the operating tool 243 fitted into the fitting portion 245a.

[0041] Fig. 9 is a cross-sectional view taken along line IX-IX in Fig. 2. A ladder installation surface 22a is formed on the movable floor 22. When the movable floor 22 is in the covering position, the ladder installation surface 22a faces toward the inside of the lower machine room 11. Therefore, in this embodiment, when the movable floor 22 is in the covering position, the ladder installation surface 22a faces downward.

[0042] The ladder 25 is provided on the ladder installation surface 22a. A pair of ladder mounting members 223 are fixed to the ladder installation surface 22a. The pair of ladder mounting members 223 are disposed on both sides of the ladder 25 in the width direction of the truss 1, as shown in FIG.

[0043] The ladder 25 is provided with a pair of ladder shafts 253. As shown in Fig. 2, the pair of ladder shafts 253 protrude from the ladder 25 to both outsides of the ladder 25 in the width direction of the truss 1. The pair of ladder shafts 253 are located on a single axis line along the width direction of the truss 1.

[0044] As shown in Fig. 9, each ladder shaft 253 is provided on the ladder installation surface 22a via each ladder mounting member 223. As a result, each ladder shaft 253 is disposed along the ladder installation surface 22a. Also, each ladder shaft 253 is disposed parallel to the floor board shaft 221.

[0045] The ladder 25 is rotatable relative to the movable floor board 22 around each ladder axis 253. This allows the orientation of the ladder 25 to be reversed around each ladder axis 253. By reversing the orientation of the ladder 25 around each ladder axis 253, the ladder 25 is displaceable relative to the movable floor board 22 between a stored position where the ladder 25 overlaps with the ladder installation surface 22a and a protruding position where the ladder 25 protrudes from the movable floor board 22.

[0046] A ladder holding member 224 is fixed to the ladder installation surface 22a. The ladder 25 is fastened to the ladder holding member 224 by a ladder fastener 255. The ladder fastener 255 fastens the ladder 25 to the ladder holding member 224 by being inserted into through holes provided in the ladder 25 and the ladder holding member 224. The ladder fastener 255 fastens the ladder 25 to the ladder holding member 224, thereby holding the ladder 25 in the stored position.

[0047] Here, Fig. 10 is a partially broken cross-sectional view showing the movable floor plate 22 of Fig. 7 in the open position. The state in which the ladder 25 is held in the stowed position is released by removing the ladder fastener 255 from the ladder holding member 224 and the ladder 25. By releasing the state in which the ladder 25 is held in the stowed position, the ladder 25 becomes displaceable with respect to the movable floor plate 22 between the stowed position and the extended position. When the movable floor plate 22 is in the open position, the ladder 25 is displaced from the stowed position to the extended position, causing the ladder 25 to protrude from the movable floor plate 22 toward the inside of the lower machine room 11.

[0048] When the movable floor plate 22 is in the open position, the slide member 232 is located at the end of the long hole 234 that is closer to the floor plate axis 221. As a result, when the movable floor plate 22 is in the open position, the fixed guide member 231 prevents the slide member 232 from moving in the direction approaching the floor plate axis 221.

[0049] When the movable floor plate 22 is in the open position, the movable floor plate 22 is inclined from the horizontal plane outward from the floor plate axis 221 when viewed from the fixed guide member 231, so that the weight of the movable floor plate 22 is applied to the slide member 232 in a direction approaching the floor plate axis 221. As a result, the fixed guide member 231 holds the movable floor plate 22 in the open position while receiving the weight of the movable floor plate 22 from the slide member 232.

[0050] The ladder 25 is extendable. Thus, the state of the ladder 25 changes between a contracted state and an extended state. The length of the ladder 25 is longer when the ladder 25 is extended than when the ladder 25 is contracted. The ladder 25 is held in the stored position with the ladder 25 in the contracted state. When the ladder 25 is held in the stored position, the ladder 25 is fastened to the ladder holding member 224 by the ladder fastener 255, thereby preventing the ladder 25 from changing from the contracted state to the extended state. When the state in which the ladder 25 is held in the stored position is released, the ladder 25 becomes extendable.

[0051] FIG. 11 is a partially cutaway cross-sectional view showing the lower floor panel device 2 when the ladder 25 in FIG. 10 is in the protruding position and the ladder 25 is in the extended state. The ladder 25 has a first ladder member 251 and a second ladder member 252 as multiple ladder members. Thus, in this embodiment, the ladder 25 has two ladder members. Each of the first ladder member 251 and the second ladder member 252 has a pair of vertical members and multiple step members. The pair of vertical members are arranged parallel to each other along the extension / retraction direction of the ladder 25. The multiple step members are fixed between the pair of vertical members at intervals from each other in the longitudinal direction of each vertical member.

[0052] Each vertical member of the first ladder member 251 is provided with a first ladder groove 251a extending in the extension / retraction direction of the ladder 25. Each vertical member of the second ladder member 252 is provided with a second ladder groove 252a extending in the extension / retraction direction of the ladder 25.

[0053] A first ladder connector 256 is fixed to each vertical member of the first ladder member 251. Each first ladder connector 256 is inserted into each second ladder groove 252a. As a result, each first ladder connector 256 connects the first ladder member 251 to the second ladder member 252 so as to be slidable in a direction along each second ladder groove 252a.

[0054] A second ladder connector 257 is fixed to each vertical member of the second ladder member 252. Each second ladder connector 257 is inserted into each first ladder groove 251a. As a result, each second ladder connector 257 connects the second ladder member 252 to the first ladder member 251 so as to be slidable in a direction along each first ladder groove 251a.

[0055] As a result, the first ladder member 251 and the second ladder member 252 are connected to each other so that they can slide relative to each other. The ladder 25 expands and contracts as the first ladder member 251 and the second ladder member 252 slide relative to each other. As shown in Fig. 10, the ladder 25 is in a contracted state as the first ladder member 251 and the second ladder member 252 overlap each other. Also, as shown in Fig. 11, the ladder 25 is in an extended state as the position of the second ladder member 252 shifts relative to the position of the first ladder member 251.

[0056] The pair of ladder shafts 253 are provided at the end of the first ladder member 251 in the extension / retraction direction of the ladder 25. As a result, the first ladder member 251 and the second ladder member 252 are connected to be able to slide sequentially from each ladder shaft 253, in the order of the first ladder member 251 and the second ladder member 252. The ladder shafts 253 are fixed to each vertical member of the first ladder member 251. The axis of each ladder shaft 253 is perpendicular to the longitudinal direction of each vertical member of the first ladder member 251.

[0057] As shown in Fig. 10, the ladder fastener 255 holds the ladder 25 in the stowed position by fastening the second ladder member 252 to the ladder holding member 224. The ladder fastener 255 fastens the end of the second ladder member 252 farther from the ladder axis 253 to the ladder holding member 224, of both ends in the extension / retraction direction of the ladder 25. Only one of the pair of vertical members of the second ladder member 252 is fastened to the ladder holding member 224 by the ladder fastener 255, as shown in Fig. 2.

[0058] When the movable floor plate 22 is held in the open position, the ladder 25 is displaced from the stored position to the extended position, and the ladder 25 changes from a contracted state to an extended state, so that the ladder 25 reaches the bottom of the lower machine room 11, as shown in Fig. 11. When the ladder 25 has reached the bottom of the lower machine room 11, the first ladder member 251 protrudes from the movable floor plate 22 into the interior of the lower machine room 11, and the second ladder member 252 reaches the bottom of the lower machine room 11. The configuration of the upper floor plate device 3 is similar to that of the lower floor plate device 2.

[0059] Next, a procedure for performing maintenance and inspection work on the machinery in the lower machinery room 11 will be described. When an operator performs maintenance and inspection work on the machinery in the lower machinery room 11, the operator first inserts the operating tool 243 into the operating hole 211 from above the fixed floor board 21, and fits the operating tool 243 into the fitting portion 245a of the winding shaft 245. The operating tool 243 is then turned to wind the wire 241 onto the winding shaft 245. This displaces the movable floor board 22 from the covered position toward the open position. If the operating tool 243 is then turned to continue winding the wire 241 onto the winding shaft 245, the movable floor board 22 will reach the open position as shown in FIG. 10. This opens the upper opening of the lower machinery room 11. When the movable bed plate 22 reaches the open position, the weight of the movable bed plate 22 is supported by the fixed guide member 231, so that the movable bed plate 22 is held in the open position even if the operating tool 243 is removed from the winding device 242.

[0060] Thereafter, the ladder fastener 255 is removed from the ladder holding member 224. This releases the state in which the ladder 25 is held in the stored position, and allows the ladder 25 to be extended or retracted.

[0061] Thereafter, the ladder 25 is inverted about each ladder axis 253, thereby displacing the ladder 25 from the stored position to the extended position relative to the movable floor plate 22. Also, the second ladder member 252 is slid relative to the first ladder member 251, thereby changing the state of the ladder 25 from the contracted state to the extended state. As a result, the ladder 25 reaches the bottom of the lower machine room 11 from the movable floor plate 22, as shown in FIG.

[0062] Thereafter, the worker descends the ladder 25 from the upper opening of the lower machine room 11 to enter the interior of the lower machine room 11. In this way, the worker performs maintenance and inspection work on the equipment inside the lower machine room 11. At this time, because the movable floor plate 22 is held on the outside of the lower machine room 11, a working space for the worker is secured inside the lower machine room 11. Thereafter, the worker climbs the ladder 25 from inside the lower machine room 11 to go outside the lower machine room 11.

[0063] Thereafter, the state of the ladder 25 is changed from the extended state to the contracted state, and the ladder 25 is displaced from the extended position to the stored position relative to the movable floor plate 22. Thereafter, the ladder 25 is fastened to the ladder holding member 224 by the ladder fastener 255, thereby holding the ladder 25 in the stored position.

[0064] Thereafter, the movable floor plate 22 is displaced from the open position to the covered position while being supported. At this time, as the movable floor plate 22 is displaced from the open position to the covered position, the slide member 232 moves in a direction away from the floor plate shaft 221, while the wire 241 is unwound from the winding device 242. In this manner, the maintenance and inspection work on the equipment inside the machine room of the lower machine room 11 is completed.

[0065] The procedure for performing maintenance and inspection work on the equipment in the upper machine room 12 is the same as the procedure for performing maintenance and inspection work on the equipment in the lower machine room 11.

[0066] In such an escalator lower floor panel device 2, the movable floor panel 22 is displaced from the covered position toward the open position by rotating relative to the truss 1 toward the outside of the lower machine room 11. The sliding member 232 slides the long hole 234 relative to the fixed guide member 231 in the direction in which the winding device 242 winds the wire 241, thereby displacing the movable floor panel 22 from the covered position toward the open position. Therefore, the upper opening of the lower machine room 11 can be opened without the movable floor panel 22 being inserted into the lower machine room 11. This makes it possible to prevent the space inside the lower machine room 11 from being narrowed by the movable floor panel 22, and ensures a working space inside the lower machine room 11. Therefore, it is possible to suppress a decrease in the efficiency of the maintenance and inspection work of the escalator. In addition, the wire 241 is wound and unwound by the winding device 242, so that the movable floor panel 22 can be displaced between the covered position and the open position. This reduces the work of directly lifting the movable floor panel 22, and also reduces the burden on the worker when moving the movable floor panel 22.

[0067] The upper floor plate device 3 has a similar configuration to that of the lower floor plate device 2. This makes it possible to secure a working space inside the upper machine room 12 during maintenance and inspection work on the escalator, and to prevent a decrease in the efficiency of maintenance and inspection work on the escalator. In addition, it is possible to reduce the burden on workers when moving the movable floor plate of the upper floor plate device 3.

[0068] Moreover, the ladder 25 can be displaced relative to the movable floor plate 22 between the stored position and the extended position by reversing the orientation of the ladder 25 about a ladder axis 253 provided on the movable floor plate 22. Therefore, when the movable floor plate 22 is in the open position, the ladder 25 can be displaced from the stored position to the extended position to cause the ladder 25 to extend from the movable floor plate 22 toward the inside of the lower machine room 11. This makes it easier for workers to enter and exit the interior of the lower machine room 11.

[0069] The configuration of the upper floor plate device 3 is similar to that of the lower floor plate device 2. Therefore, a ladder can be protruded from the movable floor plate of the upper floor plate device 3 toward the inside of the upper machine room 12, making it easy for workers to enter and exit the upper machine room 12.

[0070] Furthermore, the ladder 25 extends and retracts as the first ladder member 251 and the second ladder member 252 slide relative to each other. Therefore, even if the dimensions of the ladder 25 held in the stored position are limited by the size of the movable floor plate 22, the ladder 25 can be extended according to the depth of the lower machine room 11, making it easy for workers to enter and exit the interior of the lower machine room 11.

[0071] The configuration of the upper floor plate device 3 is similar to that of the lower floor plate device 2. Therefore, the ladder of the upper floor plate device 3 can be extended according to the depth of the upper machine room 12, making it easy for workers to enter and exit the interior of the upper machine room 12.

[0072] In the above embodiment, the ladder 25 includes two ladder members, the first ladder member 251 and the second ladder member 252. However, the number of ladder members included in the ladder 25 is not limited to two. For example, the ladder 25 may include three or more ladder members. In this case, the three or more ladder members are connected to the ladder shaft 253 so as to be able to slide sequentially. In this case, the ladder 25 extends and retracts as the three or more ladder members slide relative to each other.

[0073] In the above embodiment, the ladder 25 is extendable. However, if an operator can enter and exit the lower machine room 11 without extending the ladder 25, the ladder 25 does not have to be extendable. That is, the ladder 25 may include only one ladder member.

[0074] In the above embodiment, the ladder 25 is provided on the movable floor plate 22. However, if workers can enter and exit the lower machine room 11, the ladder 25 may not be necessary.

[0075] In the above embodiment, the lower floor plate device 2 and the upper floor plate device 3 are applied to an escalator as a passenger conveyor. However, the lower floor plate device 2 and the upper floor plate device 3 may be applied to a moving walkway as a passenger conveyor.

[0076] The configurations shown in the above embodiments are examples of the contents of the present disclosure. The embodiments can be combined with other known technologies. A part of the configuration of the embodiments can be omitted or modified without departing from the gist of the present disclosure. [Explanation of symbols]

[0077] 1 truss, 11 lower machine room (machine room), 12 upper machine room (machine room), 22 movable floor board, 22a ladder installation surface, 25 ladder, 231 fixed guide member, 232 slide member, 233 connecting member, 234 long hole, 241 wire, 242 winding device, 251 first ladder member (ladder member), 252 second ladder member (ladder member), 253 ladder shaft.

Claims

1. a movable floor plate that is displaceable between a covering position that covers an opening formed in an upper portion of the machine room in the truss and an opening position that opens the opening; A fixed guide member fixed to the truss and having a slot; a slide member attached to the fixed guide member and slidable through the elongated hole in a direction along the elongated hole relative to the fixed guide member; a connecting member that connects the movable floor plate and the slide member and displaces the movable floor plate between the covering position and the opening position in response to the sliding of the slide member relative to the fixed guide member; A wire connected to the slide member; a winding device fixed to the truss for winding and unwinding the wire; Equipped with the movable floor panel is displaced from the covered position toward the open position by rotating relative to the truss toward the outside of the machine room; A passenger conveyor floor panel device in which the movable floor panel is displaced from the covering position toward the opening position by the sliding member sliding through the long hole relative to the fixed guide member in the direction in which the winding device winds up the wire.

2. A ladder is provided on a ladder installation surface formed on the movable floor plate via a ladder shaft so as to face the inside of the machine room when the movable floor plate is located in the covering position, the ladder has a ladder member including a plurality of step members; The plurality of step members are spaced apart from one another in a longitudinal direction of the ladder member perpendicular to an axis of the ladder shaft, The ladder is displaceable relative to the movable floor between a storage position where the ladder overlaps the ladder installation surface and a protruding position where the ladder protrudes from the movable floor by rotating relative to the movable floor around the ladder axis and reversing the orientation of the ladder, One end of the ladder in the longitudinal direction of the ladder member is provided on the ladder shaft, When the movable floor plate is in the open position, the ladder is displaced to the stored position by rotating the ladder around the ladder axis relative to the movable floor plate so that the other end of the ladder in the longitudinal direction of the ladder member is located farther from the machine room than the one end of the ladder, When the movable floor plate is in the open position, the ladder is displaced to the extended position by rotating the ladder around the ladder axis relative to the movable floor plate so that the other end of the ladder in the longitudinal direction of the ladder member is closer to the machine room than the one end of the ladder, A passenger conveyor floor panel device as described in claim 1, wherein when the movable floor panel is positioned in the open position, the ladder is displaced from the stowed position to the extended position, causing the ladder to protrude from the movable floor panel toward the inside of the machine room.

3. The ladder has a plurality of ladder members connected to the ladder shaft so as to be slidable in sequence, 3. The floor panel device for a passenger conveyor according to claim 2, wherein the ladder extends and retracts by sliding the plurality of ladder members relative to one another.

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