Passenger conveyor and oil pan for passenger conveyor

Abstract

To provide a passenger conveyor that prevents oil retention and reduces oil leakage in a truss frame, and an oil pan for the passenger conveyor.SOLUTION: In a passenger conveyor provided with a truss frame that supports steps, the truss frame having multiple dividing frames that are arranged vertically below the steps in the direction of step movement and a vertical member that is fixed upright on the top side of the dividing frames in the vertical direction and couples the dividing frames arranged adjacent to each other, the passenger conveyor comprises, in the truss frame, an oil pan that is provided below the steps and receives flowing oil, and a cover part that covers a hem of the vertical member on the side where the oil pan is arranged and covers a gap between the oil pan and the dividing frame, and each part forming the cover part has a gradient for flowing the flowing oil toward the oil pan.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a passenger conveyor and an oil pan for the passenger conveyor. [Background technology]

[0002] The passenger conveyor includes a truss frame installed in a building structure, and a number of steps connected in an endless manner within the truss frame, which move in a circular motion. An endless chain is connected to the steps, and the steps move in a circular motion when the chain is rotated.

[0003] Passenger conveyors are provided with an oil pan that receives the lubricating oil that drops from the chain (Patent Document 1, Patent Document 2). Patent Document 1 discloses a configuration in which a ridge is formed in the center of the oil pan in the width direction to prevent oil from accumulating in areas where workers stand in the oil pan provided on the passenger conveyor, and oil flows to the ends in the width direction.

[0004] Meanwhile, the frame that constitutes the passenger conveyor is divided into several parts in the longitudinal direction of the passenger conveyor, and the joints are joined on-site. Therefore, construction is performed on-site at the joints to prevent oil from leaking out of the frame. However, on-site construction is performed in a limited space and time, and there is a high risk of oil leaking out of the frame (oil leakage) due to variations in the skills of the constructor.

[0005] In response to this, the invention described in Patent Document 2 discloses a configuration in which, in order to prevent oil leakage at the joints of the frame, a cover member is provided at the joints between the vertical members of the frame, and the cover member guides oil leaking from the rail portion to the oil pan. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 6-340393 [Patent Document 2] JP 2014-152035 A Summary of the Invention [Problem to be solved by the invention]

[0007] Incidentally, the oil in the truss frame of the passenger conveyor flows from the upper side to the lower machine room due to gravity in the oil pan that covers the bottom of the truss frame. In addition, there is also oil that drips from the oiled chain and from the rail part. The structure of the conventional oil pan has a vertical part that blocks the oil flowing from the upper machine room of the passenger conveyor to the lower machine room, and there is a stagnation point where the speed of the flowing oil is zero. The existence of a stagnation point increases the risk that the oil will accumulate and gradually seep out of the truss frame.

[0008] Therefore, the present invention provides a passenger conveyor and an oil receiver for a passenger conveyor that suppresses oil retention within a truss frame and reduces oil leakage. [Means for solving the problem]

[0009] In order to solve the above problems and achieve the objects of the present invention, the passenger conveyor of the present invention is composed of a plurality of steps that are connected endlessly and move in a circulating manner, and a plurality of split frames that are arranged in a row below the steps in the vertical direction along the direction of step movement, and is equipped with a truss frame that supports the steps internally, a vertical member that is erected and fixed to the upper surface side of the split frames in the vertical direction and connects the split frames that are arranged adjacent to each other, an oil pan that is arranged below the steps and receives oil that has flowed within the truss frame, and a cover portion that covers the bottom of the vertical member and covers the gap between the oil pan and the split frames, and the cover portion has a slope to direct the flowing oil toward the oil pan.

[0010] The oil receiver for a passenger conveyor of the present invention is an oil receiver provided on a passenger conveyor, the oil receiver comprising a plurality of steps that are connected endlessly and move in a circular manner, a plurality of divided frames arranged in a row below the steps in the vertical direction along the movement direction of the steps, a truss frame supporting the steps therein, and a vertical member that is erected and fixed to the upper surface side of the divided frames in the vertical direction and connects the divided frames that are arranged adjacent to each other. The oil receiver is provided below the steps and includes an oil pan that receives oil that has flowed inside the truss frame, and a cover part that covers the bottom part of the vertical member on the side where the oil pan is arranged and covers the gap between the oil pan and the divided frames, the cover part having a slope for directing the flowing oil toward the oil pan. Effect of the Invention

[0011] According to the present invention, it is possible to suppress oil retention within the truss frame and reduce oil leakage. [Brief description of the drawings]

[0012] [Figure 1] 1 is a schematic configuration diagram of a passenger conveyor 1 according to an embodiment of the present invention. [Diagram 2] 1 is a schematic perspective view of a main part including an oil pan 10 of a passenger conveyor 1 according to an embodiment of the present invention. [Diagram 3] 1 is a schematic cross-sectional view of a main part including an oil pan 10 of a passenger conveyor 1 according to an embodiment of the present invention. [Figure 4] 1 is a schematic configuration diagram of a main part including an oil pan 10 of a passenger conveyor 1 according to an embodiment of the present invention, as viewed from above. [Diagram 5] FIG. 2 is a top view of the oil receiver 10 with only the oil pan 50 installed. [Figure 6] Fig. 6A is a schematic perspective view of the first cover portion 40. Fig. 6B is a schematic perspective view of the second cover portion 20. Fig. 6C is a schematic perspective view of the third cover portion 30. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, an example of a passenger conveyor according to an embodiment of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the following example. In each of the drawings described below, the same reference numerals are used to denote common members.

[0014] 1. Configuration of passenger conveyor Fig. 1 is a schematic diagram of a passenger conveyor 1 according to an embodiment of the present invention. As shown in Fig. 1, the passenger conveyor 1 is an inclined passenger conveyor, a so-called escalator, installed on the upper floor and the lower floor of a building structure. As shown in Fig. 1, the passenger conveyor 1 includes a truss frame 4 installed on the building structure, a deck section 13, a plurality of steps 6, a balustrade section 9, and an oil pan 10. The passenger conveyor 1 also includes a drive mechanism (not shown), a lower sprocket 7B, and an upper sprocket 7A.

[0015] The truss frame 4 is a framework installed across the upper floor 2 and the lower floor 3, and is provided at a position sandwiching the steps 6. The truss frame 4 is composed of an inclined section, an upper horizontal section, and a lower horizontal section. Hereinafter, the direction of the truss frame 4 extending from the lower floor 3 toward the upper floor 2 is defined as the longitudinal direction of the truss frame 4. The direction perpendicular to the longitudinal direction of the truss frame 4 and also perpendicular to the vertical direction is defined as the width direction of the truss frame 4. Furthermore, the direction perpendicular to the longitudinal direction and width direction of the truss frame 4 is defined as the up-down direction.

[0016] The upper horizontal section formed on the upper floor 2 side of the longitudinal direction of the truss frame 4 is formed parallel to the upper floor 2. An upper boarding and alighting floor 4A is installed in the upper horizontal section of the truss frame 4. The upper boarding and alighting floor 4A is installed on the upper floor 2, parallel to the upper floor 2.

[0017] The lower horizontal section formed on the lower floor 3 side in the longitudinal direction of the truss frame 4 is formed parallel to the lower floor 3. A lower boarding and alighting floor 4B is installed in the lower horizontal section of the truss frame 4. The lower boarding and alighting floor 4B is parallel to the lower floor 3 and is installed at the same height as the floor surface of the lower floor 3.

[0018] Further, a drive mechanism (not shown) and an upper sprocket 7A are disposed below the upper boarding and alighting floor 4A of the truss frame 4, and a lower sprocket 7B is disposed below the lower boarding and alighting floor 4B of the truss frame 4. A transmission chain (not shown) is wound around the upper sprocket 7A and the drive shaft of the drive mechanism. When the drive mechanism is driven, the upper sprocket 7A is rotated via the transmission chain.

[0019] A step chain 11 is wound around the upper sprocket 7A and the lower sprocket 7B. The step chain 11 is formed endless with both longitudinal ends connected. When the upper sprocket 7A rotates, the lower sprocket 7B and the step chain 11 rotate. The step chain 11 moves cyclically between the upper sprocket 7A and the lower sprocket 7B.

[0020] A plurality of steps 6 are connected between a pair of step chains 11 via shafts 113 (see FIG. 3), and a roller 111 (see FIG. 3) is provided on the shaft end of the shaft 113. The roller 111 is movably supported on a rail 112 (see FIG. 3) that is fixed to the truss frame 4 and extends in the longitudinal direction of the truss frame 4. As a result, as the step chains 11 circulate, the plurality of steps 6 circulate along the rail 112 between the upper sprocket 7A and the lower sprocket 7B.

[0021] A deck section 13 is installed on both widthwise ends of the multiple steps 6. As shown in Fig. 1, the deck section 13 is arranged along the longitudinal direction of the truss frame 4. The deck section 13 covers all of the inclined sections above both widthwise ends of the truss frame 4 and parts of the upper horizontal section and lower horizontal section.

[0022] The balustrade section 9 has a balustrade panel 8 supported by the deck section 13, and a movable handrail (not shown). The movable handrail is movably supported on the peripheral edge of the balustrade panel 8. The movable handrail also moves in a circulating manner in synchronization with the circulating operation of the multiple steps 6.

[0023] The oil pan 10 is provided on the bottom side of the truss frame 4, and has a structure to receive lubricating oil (hereinafter simply referred to as oil) dripping from the step chain 11, the rail 112, etc., and to allow it to flow in one direction. In this embodiment, the structure of the oil pan 10 is characterized. The detailed structure of the oil pan 10 configured in the passenger conveyor 1 of this embodiment will be described below.

[0024] 2. Structure of the oil pan attached to the truss frame Fig. 2 is a schematic perspective view of the main parts including the oil pan 10 of the passenger conveyor 1 of this embodiment. Fig. 3 is a schematic cross-sectional configuration diagram of the main parts including the oil pan 10 of the passenger conveyor 1. Fig. 4 is a schematic configuration diagram of the main parts including the oil pan 10 of the passenger conveyor 1 as viewed from above. Note that the oil pan 10 of this embodiment is particularly effective when attached to the truss frame 4 in the inclined section, but is not limited to this and may be attached to the entire truss frame 4 including the horizontal section.

[0025] 2-1.Frame First, the configuration of the main parts of the truss frame 4 will be described. The truss frame 4 is constructed by connecting a plurality of split frames divided in the longitudinal direction at the work site. In this embodiment, as shown in Fig. 3, the configuration of the split frames 5a, 5b disposed below the step 6 in the vertical direction and the oil pan 10 provided in the vicinity thereof will be described. The split frames 5a, 5b are provided symmetrically on both sides of the step 6 in the width direction, but here, the split frames 5a, 5b provided on one side of the step 6 in the width direction will be described.

[0026] Each of the divided frames 5a, 5b constituting the truss frame 4 is composed of members extending in the moving direction of the steps 6 (the longitudinal direction of the truss frame 4). The divided frames 5a, 5b are composed of a member with an L-shaped cross section, having, for example, a bottom surface portion 15 made of a plate-like member parallel to the floor surface, and a side surface portion 14 made of a plate-like member standing perpendicular to the bottom surface portion 15.

[0027] The divided frames 5a, 5b are disposed inside the building structure such that, in the width direction, the side surface portion 14 is positioned on the opposite side to the side on which the steps 6 are arranged with respect to the bottom surface portion 15.

[0028] A vertical member 18a for connecting the divided frame 5a to the adjacent divided frame 5b is fixed upright on the top surface side in the vertical direction of one end portion in the longitudinal direction of the divided frame 5a constituting the truss frame 4. Similarly, a vertical member 18b for connecting the divided frame 5b to the adjacent divided frame 5a is fixed upright on the top surface side in the vertical direction of the other end portion in the longitudinal direction of the divided frame 5b. The vertical members 18a, 18b are each composed of a member extending in the vertical direction perpendicular to the longitudinal direction and width direction of the truss frame 4.

[0029] Vertical member 18a is composed of a member with an L-shaped cross section, having fixing portion 17 made of a plate-like member that is the portion fixed to side portion 14 of divided frame 5a, and connecting portion 16 made of a plate-like member that stands vertically relative to fixing portion 17. Similarly, vertical member 18b is composed of a member with an L-shaped cross section, having fixing portion 17 made of a plate-like member that is the portion fixed to side portion 14 of divided frame 5b, and connecting portion 16 made of a plate-like member that stands vertically relative to fixing portion 17.

[0030] The vertical member 18a has a fixing portion 17 fixed to the side surface 14 of the split frame 5a at one end in the longitudinal direction of the split frame 5a. Similarly, the vertical member 18b has a fixing portion 17 fixed to the side surface 14 of the split frame 5a. At this time, the adjacent vertical members 18a, 18b are fixed to the respective split frames 5a, 5b such that the connecting portions 16, 16 can abut against each other.

[0031] In this embodiment, adjacent split frames 5a, 5b are arranged so that the connecting parts 16, 16 of the respective vertical members 18a, 18b are adjacent to each other in the longitudinal direction, and are connected to each other by fixing the connecting parts 16, 16 to each other with bolts 17. In this embodiment, the fastening of the connecting parts 16, 16 of adjacent vertical members 18a, 18b to each other with bolts 17 is performed on the bottom surface parts 15 sides of the split frames 5a, 5b.

[0032] Incidentally, in response to the space saving of the passenger conveyor 1, the width of the truss frame 4 formed by sandwiching the step 6 tends to become smaller, and accordingly, the width direction length of each of the connecting parts 16 of the vertical members 18a, 18b is also formed to be smaller. Therefore, it is necessary to secure the bolt fastening part at the connecting part 16 in the vertical members 18a, 18b whose width direction length is reduced. In this embodiment, as shown in FIG. 3, the width of the bottom part 16A of the connecting part 16 is formed larger at the bottom side in the vertical direction below the position where the rail 112 is fixed than the width of the connecting part 16 above the position where the rail 112 is fixed. Then, a configuration is made in which a plurality of bolt fastening parts 17 are provided at the bottom part 16A formed to be wider. In this embodiment, for example, the bottom part 16A is configured to extend to a position directly below the rail 112.

[0033] In the truss frame 4 having the above configuration, adjacent divided frames 5a, 5b are fixed to each other by fastening the vertical members 18a, 18b fixed to the divided frames 5a, 5b to each other with bolts 17. At this time, a gap material 70 is sandwiched between the fastened vertical members 18a and 18b.

[0034] 2-2.Oil pan configuration Next, the oil receiver provided so as to cover the bottom surface of the truss frame 4 and the bottom portion 16A of the connecting portion 16 of the vertical members 18a, 18b will be described. As shown in Figures 2 and 4, the oil receiver 10 of this embodiment is composed of an oil pan 50 and a cover portion 60. Furthermore, the respective parts constituting the oil receiver 10 will be described, with the longitudinal direction of the frame described above simply referred to as the "longitudinal direction", the width direction of the frame simply referred to as the "width direction", and the up-down direction of the frame simply referred to as the "up-down direction".

[0035] [Oil pan configuration] Fig. 5 is a top view of the oil receiver 10 with only the oil pan 50 installed. That is, Fig. 5 shows the state before the cover part 60 is attached during construction. In Fig. 5, the side where the separate frame 5a is arranged (to the right on the paper) is the upper floor 2 side in the longitudinal direction, and the side where the separate frame 5b is arranged (to the left on the paper) is the lower floor 3 side in the longitudinal direction. That is, in the inclined section, the separate frame 5a side is located at a higher position than the separate frame 5b.

[0036] 5, the oil pan 50 is composed of split oil pans 50a, 50b, which are divided into a plurality of pieces in the longitudinal direction, and a joint oil pan 50c, similar to the truss frame 4. The split oil pans 50a, 50b, and the joint oil pan 50c are each composed of a plate-shaped member.

[0037] The split oil pan 50a is fixed to the split frame 5a. On the other hand, the split oil pan 50b is fixed to the split frame 5b. These split oil pans 50a, 50b may be fixed to the corresponding split frames 5a, 5b in advance at a factory or the like and then delivered, or they may be fixed on-site.

[0038] Although not shown, in the split oil pan 50a, an end of a region covered by the first cover part 40 of the cover part 60 described below has a bent part bent upward in the up-down direction. By providing a bent part at a predetermined position in the split oil pan 50a, it is possible to prevent the oil flowing therefrom from leaking out toward the vertical members 18a, 18b.

[0039] The joint oil pan 50c is installed between the adjacent split oil pans 50a and 50b. The joint oil pan 50c is made of a substantially rectangular plate-like member and covers the gap between the split oil pans 50a and 50b provided for each of the adjacent split frames 5a and 5b. The joint oil pan 50c is horizontally inserted and fixed to the bottom surface portion 15 of the split frames 5a and 5b. One end (upper floor 2 side) of the joint oil pan 50c in the longitudinal direction of the truss frame 4 is stacked on the end of the split oil pan 50a, and the other end (lower floor 3 side) is stacked on the end of the split oil pan 50b. At this time, the end of the joint oil pan 50c on the split oil pan 50a side is stacked so as to be positioned lower than the split oil pan 50a. On the other hand, the end of the joint oil pan 50c on the split oil pan 50b side is overlapped with the split oil pan 50b so as to be positioned above the split oil pan 50b.

[0040] Further, the joint oil pan 50c has a bent portion 56 bent upward in the up-down direction at its end on the truss frame 4 side in the width direction.

[0041] Incidentally, the vertical members 18a, 18b for fixing the split frames 5a, 5b have their bottoms 16A of their connecting parts 16 wider on the bottom surface 15 side of the split frames 5a, 5b in order to secure an area for the bolt fastening parts 17. Therefore, the bottoms 16A of the connecting parts 16 of the vertical members 18a, 18b protrude in the width direction toward the side where the steps 6 are arranged, beyond the bottom surface 15 of the split frames 5a, 5b. Therefore, in the area where the vertical members 18a, 18b are provided, the rectangular joint oil pan 50c cannot extend to the bottom surface 15 of each of the split frames 5a, 5b, and a gap is formed between the joint oil pan 50c and the bottom surface 15 of each of the split frames 5a, 5b. This gap is covered by the oil cover 60.

[0042] [Cover configuration] As shown in FIG. 3, the cover section 60 is composed of a first cover section 40, a second cover section 20, and a third cover section 30. The first cover section 40 (corresponding to the lower cover section of the present invention) is a member configured to cover the gap between the oil pan 50 and the divided frames 5a, 5b, and to direct the oil flowing from the upper floor 2 side toward the lower floor 3 side to the oil pan 50 side. The second cover section 20 (corresponding to the upper cover section of the present invention) is a member provided on the upper part of the first cover section 40 in the vertical direction, and mainly covers the bottom part 16A of the connecting part 16 of the vertical members 18a, 18b. The third cover section 30 (corresponding to the upper cover section of the present invention) is provided on the upper part of the second cover section 20 in the vertical direction, and is extended and disposed at a position higher than the height at which the rail 112 is disposed. The third cover section 30 covers the connecting part 16 from a position higher than the height at which the rail 112 is disposed to the position at which the second cover section 20 is disposed.

[0043] Fig. 6A is a schematic perspective view of the first cover portion 40. Fig. 6B is a schematic perspective view of the second cover portion 20. Fig. 6C is a schematic perspective view of the third cover portion 30.

[0044] [First cover part] The first cover portion 40 has a plate-shaped flat portion 42 extending in the longitudinal direction formed to cover the gap between the oil pan 50 and the truss frame 4, and a flat plate-shaped raised portion 41 provided at one end of the flat portion 42 in the width direction.

[0045] The length of the flat surface 42 in the longitudinal direction is longer than the width between the divided frames 5a and 5b, and the width in the width direction is configured to be a width capable of covering the gap between the divided frames 5a and 5b and the oil pan 50. Here, the flat surface 42 is disposed across the vertical members 18a, 18b that connect the divided frames 5a and 5b. For this reason, the flat surface 42 has a recess 44 in the longitudinal middle portion formed in a shape that surrounds the connecting portion 16 of the vertical members 18a, 18b.

[0046] The longitudinal end of the flat portion 42 on the upper floor 2 side is tapered so that its width decreases continuously from the side where the steps 6 are arranged toward the divided frame 5a side. In this case, the angle θ1 between the longitudinal end (tapered end) of the flat portion 42 on the upper floor 2 side and the side surface portion 14 of the divided frame 5a may be greater than 90 degrees, and more preferably, greater than 135 degrees.

[0047] Furthermore, the end of the flat portion 42 in the width direction on the side where the steps 6 are arranged and the end on the upper floor 2 side in the longitudinal direction have bent portions 42a bent downward in the up-down direction. In this embodiment, the flat portion 42 is arranged so as to cover the bent portion (not shown) of the split oil pan 50a and the bent portion 56 (see FIG. 2) of the joint oil pan 50c, and the bent portion 42a of the flat portion 42 is arranged so as to face the bent portion of the split oil pan 50a and the bent portion 56 of the joint oil pan 50c.

[0048] On the other hand, the rising portion 41 is provided at the end of the divided frames 5a, 5b of the flat portion 42 in the width direction, and is composed of a plate-like member provided so as to stand upward in the up-down direction. The rising portion 41 provided in an area of ​​the flat portion 42 other than the recessed portion 44 is a portion that abuts against each of the side portions 14 of the divided frames 5a, 5b, and serves as a mounting surface when fixing the first cover portion 40 to the divided frames 5a, 5b. Therefore, a plurality of bolt holes 41a (screw holes) are provided in the portion of the side portion 14 that serves as the mounting surface.

[0049] The rising portion 41 provided in the recess 44 functions as a blocking surface for preventing the oil that has flowed into the inside of the first cover portion 40 from entering below the oil pan 50.

[0050] The first cover part 40 consisting of a flat portion 42 and a raised portion 41 may be formed by bending a single plate-like member, or may be formed integrally by welding the separately formed flat portion 42 and raised portion 41 together.

[0051] [Second cover part] The second cover portion 20 has a front portion 21 that is arranged in the width direction on the side where the steps 6 of the vertical members 18a, 18b are arranged, side portions 22, 23 that are provided on both sides of the front portion 21 in the longitudinal direction, and a hem portion 24 that is provided at the lower end of the front portion 21 in the vertical direction.

[0052] The front surface 21 is configured to cover the surface of the connecting portion 16 of the vertical members 18a, 18b on the side where the steps 6 are arranged in the width direction between the first cover portion 40 and the third cover portion 30, and is configured as a rectangular plate-like member. The front surface 21 is configured obliquely with respect to the extension direction of the vertical members 18a, 18b so that the angle between the surface on the side where the steps 6 are arranged in the width direction and the extension direction of the vertical members 18a, 18b is greater than 90 degrees.

[0053] 6B, a rising portion 21a extending in the vertical direction is provided at the upper end in the vertical direction of the front surface portion 21, as shown in FIG. 3. The rising portion 21a is a portion that is disposed inside the third cover portion 30, and is a portion that overlaps with the front surface portion 33 of the third cover portion 30 in the width direction.

[0054] The bottom 24 is made of a rectangular plate-like member provided at the end of the front part 21 on the side where the step 6 is arranged in the width direction, and has surfaces parallel to the up-down direction. The longitudinal width of the bottom 24 is configured to be approximately the same as or slightly larger than the length of the rising part 41 extending in the longitudinal direction provided in the recess 44 of the first cover part 40. The bottom 24 serves as a fixing surface to the first cover part 40, and has a bolt hole 24a (screw hole) for fixing to the first cover part 40. That is, in this embodiment, the rising part 41 extending in the longitudinal direction provided in the recess 44 of the first cover part 40 and the bottom 24 are fixed by, for example, a bolt or a screw.

[0055] The side portions 22, 23 are provided to face each other in the longitudinal direction with the front portion 21 and the bottom portion 24 in between. The side portions 22, 23 are composed of plate-like members that cover the longitudinal faces of the connecting portions 16 of the vertical members 18a, 18b between the fixing portions 17 of the vertical members 18a, 18b and the front portion 21 and bottom portion 24. The side portion 22 on the upper floor 2 side in the longitudinal direction is configured to be oblique with respect to the longitudinal direction of the truss frame 4 so that the angle θ2 between the face on the upper floor 2 side and the longitudinal direction of the truss frame 4 is greater than 90 degrees.

[0056] Further, the side surface portions 22, 24 serve as fixed surfaces to the third cover portion 30. That is, in this embodiment, upper ends in the vertical direction of the side surface portions 22, 24 of the second cover portion 20 and lower ends in the vertical direction of the side surface portions 34, 36 of the third cover portion 30 are each fixed by, for example, bolts or the like.

[0057] The front portion 21, bottom portion 24, and side portions 22, 23 constituting the second cover portion 20 may be constructed from a single plate-shaped member cut and bent into a predetermined shape, or may be constructed from a member in which each part is bonded together by welding.

[0058] [Third cover part] The third cover part 30 has a top surface part 31 provided at the top in the vertical direction, side surface parts 34, 36 provided on both longitudinal sides of the top surface part 31, and a front surface part 33 provided in the width direction on the side of the top surface part 31 where the steps 6 are arranged. Furthermore, the third cover part 30 has a visor part 35 provided at the bottom end part of the front surface part 33 in the vertical direction.

[0059] The upper surface portion 31 is made of a plate-like member having a recess 32 in the center in the width direction into which the connecting portion 16 of the vertical members 18a, 18b can be inserted. In addition, the upper surface of the upper surface portion 31 in the vertical direction is inclined so that the angle θ3 with the vertical direction is greater than 90 degrees.

[0060] The side portions 34, 36 are made of rectangular plate-like members that cover both side surfaces on which the vertical members 18a, 18b are located in the longitudinal direction, and have bolt holes 36a (screw holes) for fixing to the second cover portion 20 described later.

[0061] The front surface portion 33 is a plate-like member that covers the surfaces of the vertical members 18a, 18b on the side where the steps 6 are arranged in the width direction, and is arranged on the ends on the sides where the steps are arranged of the upper surface portion 31 and the side surface portions 34, 36. The front surface portion 33 is configured so that the surface on the side where the steps 6 are arranged in the width direction is parallel to the up-down direction.

[0062] The eaves portion 35 is provided at the lower end of the front surface portion 33 in the up-down direction, and is composed of a plate-like member extending from the front surface portion 33 to the side where the steps 6 are arranged. The eaves portion 35 is formed obliquely with respect to the front surface portion 33 so that the angle θ4 between the surface of the front surface portion 33 continuing from the surface on the side where the steps 6 are arranged and the surface of the front surface portion 33 in the width direction on the side where the steps 6 are arranged is greater than 90 degrees. The eaves portion 35 is a portion that is arranged to cover the upper end of the front surface portion 21 of the second cover portion 20 described later, and is formed to be parallel to the front surface portion 21 of the second cover portion 20.

[0063] The third cover portion 30, which is composed of the top portion 31, the side portions 34, 36, the front portion 33, and the eaves portion 35, may be formed from a member obtained by cutting and bending a single plate-like member into a predetermined shape, or may be formed from a member in which each part is bonded together by welding.

[0064] 2-3. How to install the cover Next, a method of attaching the cover part 60 of this embodiment will be described. First, as shown in FIG. 4, the truss frame 4 is assembled. In this case, as described above, the vertical members 18a, 18b of the adjacent divided frames 5a, 5b are connected by fixing them with the bolts 17. Then, as shown in FIG. 5, the joint oil pan 50c is inserted parallel to the width direction into the gap between the adjacent divided oil pans 50a and 50b. At this time, the joint oil pan 50c is arranged so that it overlaps lower in the vertical direction than the divided oil pan 50a on the upper floor 2 side in the longitudinal direction of the joint oil pan 50c. On the other hand, the joint oil pan 50c is arranged so that it overlaps upper in the vertical direction than the divided oil pan 50b on the lower floor 3 side in the longitudinal direction of the joint oil pan 50c.

[0065] Next, the first cover part 40 is attached. The first cover part is positioned so that the connecting parts 16 of the vertical members 18a, 18b are placed in the recesses 44 of the first cover part 40, and the rising parts 41 provided on both sides of the recesses 44 in the longitudinal direction abut against the side parts 14 of the truss frame 4. Then, the rising parts 41 of the first cover part 40 and the side parts 14 of the truss frame 4 are fixed together with bolts or the like.

[0066] Next, the second cover part 20 is attached to the upper surface of the first cover part 40 in the up-down direction. The second cover part 20 is arranged so as to cover the recessed part 44 of the first cover part 40. Here, the second cover part 20 is fixed to the first cover part 40 by fixing the bottom part 24 of the second cover part 20 and the rising part 41 provided in the recessed part 44 of the first cover part 40 with bolts or screws.

[0067] Next, the third cover part 30 is attached. Here, the third cover part 30 is positioned so that the connecting parts 16 of the vertical members 18a, 18b are positioned within the recesses 32 of the third cover part 30 at the top end of the second cover part 20 in the vertical direction. Then, the side parts 34, 36 of the third cover part 30 are fixed to the side parts 22, 23 of the second cover part 20 with bolts or screws, thereby fixing the third cover part 30 to the second cover part 20.

[0068] Then, after the first cover part 40, the second cover part 20, and the third cover part 30 are fixed in order, a caulking material (not shown) is applied to the gaps between the respective members. This completes the installation work of the cover part 60.

[0069] In this embodiment, the end of the first cover part 40 on the upper floor 2 side in the longitudinal direction of the flat part 42 is formed in a tapered shape in which the width becomes smaller from one side to the other side in the width direction. As a result, as shown by the arrow A3 in FIG. 2, the oil flowing from the upper floor 2 side to the lower floor 3 side in the longitudinal direction can be made to flow as shown by the arrow A4, and the oil can be prevented from accumulating at the end of the first cover part 40 on the upper floor 2 side in the longitudinal direction. Furthermore, in this embodiment, in the first cover part 40, the flat part 42 is arranged so as to cover the end of the split oil pan 50a and the joint oil pan 50c on the truss frame 4 side in the width direction, and the respective bent parts 56, 42a are arranged so as to face each other. As a result, it is possible to prevent the oil flowing from the upper floor 2 side in the longitudinal direction from entering the connecting part 16 side from the first cover part 40.

[0070] Moreover, the rising portion 41 provided in the recess 44 of the first cover part 40 is disposed on the inside (the side facing the connecting part 16) of the second cover part 20. This prevents oil flowing along the surface of the second cover part 20 from flowing into the first cover part 40.

[0071] The second cover part 20 is configured so that the surface on the side where the steps 6 are arranged in the width direction of the front part 21 is inclined to form an angle of more than 90 degrees with respect to the extending direction of the vertical members 18a, 18b. That is, the front part 21 has a gradient to allow the flowing oil to flow toward the oil pan 50 side. As a result, the oil flowing from above in the vertical direction flows toward the oil pan 50 side along the front part 21. Furthermore, the side part 22 on the upper floor 2 side in the longitudinal direction of the second cover part 20 is configured so that the angle between the surface on the upper floor 2 side in the longitudinal direction and the extending direction of the truss frame 4 is greater than 90 degrees. As a result, as shown by the arrow A5 in FIG. 2, the oil flowing from the upper floor 2 side in the longitudinal direction can be allowed to flow toward the oil pan 50 side. Furthermore, the upper end part of the second cover part 20 in the vertical direction is arranged inside the third cover part 30 (the side facing the connecting part 16). This prevents oil flowing along the surface of the third cover part 30 from flowing into the second cover part 20.

[0072] In addition, the second cover part 20 is provided so as to extend upward in the vertical direction from the position where the rail 112 is fixed. This makes it possible to prevent oil dropping from the rail 112 from entering the third cover part 30. In addition, the upper surface part 31 of the third cover part 30 is formed so as to have a gradient so as to direct the flowing oil toward the oil pan 50 side. This makes it possible to direct the oil flowing in the direction indicated by the arrow A1 to the direction indicated by the arrow A2 as shown in FIG. 3, and prevents the oil from accumulating on the upper surface part 31 of the third cover part 30. Furthermore, in this embodiment, a visor part 35 is provided on the front surface part 33. This makes it possible to prevent the oil flowing along the front surface part 33 of the third cover part 30 from entering the second cover part 20.

[0073] As described above, in this embodiment, the cover part 60 that covers the bottom part 16A of the connecting part 16 of the vertical members 18a, 18b is provided, so that oil can be prevented from leaking out to the bottom of the oil pan 50 along the connecting part 16 of the vertical members 18a, 18b. Furthermore, in this embodiment, each part constituting the cover part 60 has no surface that is perpendicular to the oil flow direction (gravity direction) and has a gradient that allows the flowing oil to flow toward the oil pan 50 side. As a result, the flow of oil that flows down from above to below in the cover part 60 is stopped, and there is no part where it stagnates. As a result, for example, oil that falls from the rail or step chain, and oil that flows down each frame that constitutes the truss frame 4 quickly flows to the oil pan 50 side along the surface of each part constituting the cover part 60. This makes it possible to prevent the stagnant oil from leaking out into the inside of the cover part 60.

[0074] In addition, in the past, in areas where oil is likely to accumulate, a large amount of caulking material was applied to the joints between components to prevent oil leakage. In contrast, in this embodiment, there are no areas where oil can accumulate, so the amount of caulking material applied between components can be reduced. This reduces the amount of work on site.

[0075] In this embodiment, the first cover part 40, the second cover part 20, and the third cover part 30 are fixed in this order, but they may be fixed in advance by welding or the like and then fixed inside the truss frame 4. Also, the cover part 60 is configured such that the first cover part 40, the second cover part 20, and the third cover part 30 are formed separately and then assembled, but they may be an integrally configured member.

[0076] In addition, in the present embodiment, an escalator has been described as an example of a passenger conveyor, but the present invention is not limited to this and can be applied to other types of passenger conveyors, such as a moving walkway.

[0077] The above-mentioned embodiment has been described in detail to clearly explain the present invention, and is not necessarily limited to having all of the configurations described. For example, it is possible to replace a part of the configuration of the embodiment with another configuration, and it is also possible to add another configuration to the configuration of the embodiment. Also, it is possible to add, delete, or replace a part of the configuration of the embodiment with another configuration. [Explanation of symbols]

[0078] 1...passenger conveyor, 2...upper floor, 3...lower floor, 4...truss frame, 5a...split frame, 5b...split frame, 6...step, 7A...upper sprocket, 7B...lower sprocket, 8...parapet panel, 9...parapet section, 10...oil pan, 11...step chain, 13...deck section, 14...side section, 15...bottom section, 16...connecting section, 16A...bottom section, 17...bolt fastening section, 18a, 18b...vertical member, 20 ...second cover portion, 21...front portion, 22...side portion, 24...bottom portion, 30...third cover portion, 31...upper surface portion, 32...recess, 33...front portion, 34...side portion, 35...eaves portion, 40...first cover portion, 42...flat portion, 44...recess, 50...oil pan, 50a...split oil pan, 50b...split oil pan, 50c...seam oil pan, 60...cover portion, 111...roller, 112...rail, 113...shaft portion

Claims

1. A plurality of steps that are endlessly connected and move in a circular manner; A truss frame that is made up of a plurality of divided frames arranged in a line along a moving direction of the steps below the steps in the vertical direction and supports the steps therein; a vertical member that is fixed to an upper surface of the divided frame in a vertical direction and connects the divided frames that are arranged adjacent to each other; An oil pan provided below the step for receiving oil flowing into the truss frame; a cover portion that covers a bottom portion of the vertical member and covers a gap between the oil pan and the divided frame, At least a surface of the cover portion provided on the side toward which the oil flows has a slope for directing the flowing oil toward the oil pan. Passenger conveyor.

2. A roller attached to the step via a shaft portion; a rail fixed within the truss frame and supporting the roller; The cover portion extends above the rail in the vertical direction.

2. A passenger conveyor as claimed in claim 1.

3. The plurality of divided frames are extended from the upper floor to the lower floor, the cover portion includes a lower cover portion that covers a space between the oil pan and the divided frame, and an upper cover portion that covers a bottom portion of the vertical member, The end of the lower cover portion on the upper floor side is formed so as to form an angle with the extending direction of the division frame that is greater than 90 degrees.

2. A passenger conveyor as claimed in claim 1.

4. The vertical member is configured as a member extending in the up-down direction, The upper cover portion is composed of a front portion covering the surface of the vertical member on which the steps are arranged, a pair of side portions covering both side surfaces of the vertical member in a direction perpendicular to the extending direction of the vertical member with the front portion in between, and a top portion arranged at the upper ends of the front portion and the side portions in the up-down direction, The side surface of the pair of side surfaces on the upper floor side is configured to form an angle of greater than 90 degrees with respect to the extension direction of the partition frame, The upper surface portion is configured to form an angle with the extending direction of the vertical member that is greater than 90 degrees. A passenger conveyor as claimed in claim 3.

5. A plurality of steps that are endlessly connected and move in a circular manner; A truss frame that is made up of a plurality of divided frames arranged in a line along a moving direction of the steps below the steps in the vertical direction and supports the steps therein; A vertical member is provided on an upper surface of the divided frame in a vertical direction and fixed thereto, the vertical member connecting the divided frames arranged adjacent to each other. The oil pan is provided on a passenger conveyor, An oil pan provided below the step for receiving oil flowing into the truss frame; a cover portion that covers a bottom portion of the vertical member on a side where the oil pan is disposed and that covers a gap between the oil pan and the divided frame, At least a surface of the cover portion provided on the side toward which the oil flows has a slope for directing the flowing oil toward the oil pan. Passenger conveyor oil pan.

Images