JP2024178575A - Passenger conveyor and passenger conveyor oil pan - Google Patents

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

The present invention relates to a passenger conveyor and an oil pan for the passenger conveyor.

The passenger conveyor is equipped with a truss frame that is installed in a building structure, and multiple steps that are connected in an endless manner within the truss frame and move in a circular motion. An endless chain is connected to the multiple steps, and the multiple steps move in a circular motion when the chain is rotated.

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

Meanwhile, the frame that makes up the passenger conveyor is divided into multiple pieces in the longitudinal direction of the passenger conveyor, and the pieces are joined together on-site. Therefore, where joints are to be made, construction is carried out on-site to prevent oil from leaking out of the frame. However, on-site construction must be carried out within a limited space and time, and there is a high risk of oil leaking out of the frame (oil leakage), as variations occur depending on the skill of the constructor.

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

Japanese Patent Application Publication No. 6-340393 JP 2014-152035 A

Incidentally, 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 covering the bottom of the truss frame. Other oil also drips from the oiled chain and from the rails. Conventional oil pan structures have a vertical section 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.

Therefore, the present invention provides a passenger conveyor and an oil receiver for the passenger conveyor that suppresses oil retention within the truss frame and reduces oil leakage.

In order to solve the above problems and achieve the object of the present invention, the passenger conveyor of the present invention is composed of a number of steps that are connected endlessly and move in a circular manner, and a number of divided frames that are arranged in a line below the steps in the vertical direction along the movement direction of the steps, and is equipped with a truss frame that supports the steps inside, a vertical member that is fixed upright on the upper surface side of the divided frames in the vertical direction and connects the divided frames that are arranged next to each other, an oil pan that is arranged below the steps and receives oil that has flowed inside the truss frame, and a cover part that covers the bottom of the vertical member and covers the gap between the oil pan and the divided frames, and the cover part has a slope to direct the oil that has flowed toward the oil pan.

The oil receiver for the passenger conveyor of the present invention is an oil receiver provided on a passenger conveyor that is composed of a number of steps that are connected endlessly and move in a circular manner, and a number of divided frames that are arranged in a row below the steps in the vertical direction along the movement direction of the steps, and is equipped with a truss frame that supports the steps inside, 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 next 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 located and covers the gap between the oil pan and the divided frames, and the cover part has a slope to allow the oil that has flowed to flow toward the oil pan.

This invention makes it possible to prevent oil from accumulating within the truss frame and reduce oil leakage.

1 is a schematic configuration diagram of a passenger conveyor 1 according to an embodiment of the present invention. 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. 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. 1 is a schematic 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. FIG. 2 is a top view of the oil receiver 10 with only the oil pan 50 installed. 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.

Below, 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, common parts are given the same reference numerals.

1. Configuration of the 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.

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 referred to as the longitudinal direction of the truss frame 4. The direction perpendicular to the longitudinal direction of the truss frame 4 and perpendicular to the vertical direction is referred to 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 referred to as the up-down direction.

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. The 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 parallel to the upper floor 2 and installed on the upper floor 2.

The lower horizontal section formed on the lower floor 3 side of the truss frame 4 in the longitudinal direction is formed parallel to the lower floor 3. The 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.

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.

A step chain 11 is wound around the upper sprocket 7A and the lower sprocket 7B. The step chain 11 is formed in an endless shape 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 then moves in a circular motion between the upper sprocket 7A and the lower sprocket 7B.

Between the pair of step chains 11, multiple steps 6 are connected via shafts 113 (see FIG. 3), and rollers 111 (see FIG. 3) are provided at the ends of the shafts 113. The rollers 111 are movably supported on rails 112 (see FIG. 3) that are fixed to the truss frame 4 and extend in the longitudinal direction of the truss frame 4. As a result, as the step chains 11 circulate, the multiple steps 6 circulate along the rails 112 between the upper sprocket 7A and the lower sprocket 7B.

Deck sections 13 are installed at both ends of the multiple steps 6 in the width direction. As shown in FIG. 1, the deck sections 13 are arranged along the longitudinal direction of the truss frame 4. The deck sections 13 cover all of the inclined sections above both ends of the truss frame 4 in the width direction, as well as parts of the upper horizontal section and the lower horizontal section.

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 supported movably on the peripheral portion of the balustrade panel 8. The movable handrail also moves in a circular motion in synchronization with the circular motion of the multiple steps 6.

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

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 view of the main parts including the oil pan 10 of the passenger conveyor 1. Fig. 4 is a schematic view 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 is attached to the entire truss frame 4 including the horizontal section.

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 site. In this embodiment, as shown in Fig. 3, the configuration of the split frames 5a, 5b arranged 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.

Each of the divided frames 5a, 5b that make up the truss frame 4 is made up of members that extend in the direction in which the steps 6 move (the longitudinal direction of the truss frame 4). The divided frames 5a, 5b are made up of, 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 that stands perpendicular to the bottom surface portion 15, and has an L-shaped cross section.

The divided frames 5a and 5b are arranged inside the building structure so that the side portion 14 is located on the opposite side of the bottom portion 15 from the side on which the steps 6 are located.

A vertical member 18a for connecting the split frame 5a to the adjacent split frame 5b is fixed upright on the top surface side in the vertical direction of one end of the longitudinal direction of the split frame 5a that constitutes the truss frame 4. Similarly, a vertical member 18b for connecting the split frame 5b to the adjacent split frame 5a is fixed upright on the top surface side in the vertical direction of the other end of the longitudinal direction of the split frame 5b. The vertical members 18a and 18b are each composed of members that extend in the vertical direction perpendicular to the longitudinal direction and width direction of the truss frame 4.

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

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

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 connecting parts 16, 16 of adjacent vertical members 18a, 18b are fastened to each other with bolts 17 on the bottom surface part 15 side of the split frames 5a, 5b.

In response to the need to save space in the passenger conveyor 1, the width of the truss frame 4 formed by sandwiching the steps 6 tends to become smaller, and accordingly, the width of the connecting parts 16 of the vertical members 18a and 18b is also made smaller. Therefore, it is necessary to ensure the bolt fastening parts at the connecting parts 16 in the vertical members 18a and 18b whose width length is reduced. In this embodiment, as shown in FIG. 3, the width of the bottom part 16A of the connecting part 16 is made larger 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. In addition, the wide bottom part 16A is configured to have multiple bolt fastening parts 17. In this embodiment, for example, the bottom part 16A is configured to extend to a position directly below the rail 112.

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

2-2. Configuration of the Oil Pan Next, the oil pan provided 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 pan 10 of this embodiment is composed of an oil pan 50 and a cover portion 60. Furthermore, the respective parts constituting the oil pan 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".

[Oil pan configuration]
Fig. 5 is a top view of the oil pan 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 divided 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 divided 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 divided frame 5a side is located at a higher position than the divided frame 5b.

As shown in FIG. 5, the oil pan 50, like the truss frame 4, is composed of split oil pans 50a, 50b, which are divided into multiple parts in the longitudinal direction, and a joint oil pan 50c. The split oil pans 50a, 50b, and the joint oil pan 50c are each composed of a plate-shaped member.

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.

Although not shown, the end of the area of the split oil pan 50a that is covered by the first cover part 40 of the cover part 60 described below has a bent part that is bent upward in the vertical direction. By providing a bent part at a predetermined position on the split oil pan 50a, it is possible to prevent the oil that has flowed in from leaking from the oil pan 50 to the vertical members 18a and 18b.

The joint oil pan 50c is installed between the adjacent divided oil pans 50a and 50b. The joint oil pan 50c is composed of a plate-shaped member having a substantially rectangular shape, and covers the gap between the divided oil pans 50a and 50b provided for each of the adjacent divided frames 5a and 5b. The joint oil pan 50c is inserted horizontally into the bottom surface portion 15 of the divided frames 5a and 5b and fixed. 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 divided oil pan 50a, and the other end (lower floor 3 side) is stacked on the end of the divided oil pan 50b. At this time, the end of the joint oil pan 50c on the divided oil pan 50a side is stacked so as to be positioned lower than the divided oil pan 50a. On the other hand, the end of the joint oil pan 50c facing the split oil pan 50b is overlapped so that it is positioned above the split oil pan 50b.

The end of the joint oil pan 50c on the truss frame 4 side in the width direction has a bent portion 56 that is bent upward in the vertical direction.

The vertical members 18a, 18b for fixing the split frames 5a, 5b have their connecting parts 16 at the bottom 15 of the split frames 5a, 5b, and the bottom 16A of the connecting parts 16 is wider on the bottom 15 side of the split frames 5a, 5b to ensure an area for the bolt fastening parts 17. Therefore, the bottom 16A of the connecting parts 16 of the vertical members 18a, 18b protrudes in the width direction toward the side where the steps 6 are located, beyond the bottom 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 15 of each of the split frames 5a, 5b, and a gap is created between the joint oil pan 50c and the bottom 15 of each of the split frames 5a, 5b. This gap is covered by the oil cover 60.

[Configuration of cover part]
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 allow oil flowing from the upper floor 2 side toward the lower floor 3 side to flow toward 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 in 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.

Figure 6A is a schematic perspective view of the first cover part 40. Figure 6B is a schematic perspective view of the second cover part 20. Figure 6C is a schematic perspective view of the third cover part 30.

[First cover part]
The first cover portion 40 has a plate-shaped planar 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 planar portion 42 in the width direction.

The length of the planar portion 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 wide enough to cover the gap between the divided frames 5a and 5b and the oil pan 50. Here, the planar portion 42 is disposed across the vertical members 18a and 18b that connect the divided frames 5a and 5b. For this reason, the planar portion 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 and 18b.

The longitudinal end of the flat section 42 on the upper floor 2 side is tapered so that its width decreases continuously from the side where the steps 6 are located toward the split frame 5a side. In this case, the angle θ1 between the longitudinal end (tapered end) of the flat section 42 on the upper floor 2 side and the side section 14 of the split frame 5a should be greater than 90 degrees, and more preferably, 135 degrees or greater.

Furthermore, the end of the flat surface 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 a bent portion 42a bent downward in the up-down direction. In this embodiment, the flat surface 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 surface 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.

On the other hand, the rising portion 41 is provided at the end of the split 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 upright in the up-down direction. The rising portion 41 provided in an area other than the recessed portion 44 on the flat portion 42 is a portion that abuts against each of the side portions 14 of the split frames 5a, 5b, and serves as the mounting surface when fixing the first cover portion 40 to the split frames 5a, 5b. Therefore, a plurality of bolt holes 41a (screw holes) are provided in the portion that serves as the mounting surface of the side portion 14.

The raised portion 41 provided in the recess 44 functions as a blocking surface to prevent oil that has flowed into the first cover portion 40 from entering below the oil pan 50.

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

[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.

The front surface 21 is configured between the first cover portion 40 and the third cover portion 30 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, and is configured as a rectangular plate-shaped member. In addition, the front surface 21 is configured at an angle 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.

Although not shown in FIG. 6B, as shown in FIG. 3, a rising portion 21a extending in the vertical direction is provided at the top end of the front surface portion 21 in the vertical direction. This rising portion 21a is a portion that is disposed inside the third cover portion 30, and overlaps with the front surface portion 33 of the third cover portion 30 in the width direction.

The bottom 24 is made of a rectangular plate-like member provided at the end of the front surface 21 on the side where the step 6 is located in the width direction, and has surfaces parallel to the top and bottom directions. The longitudinal width of the bottom 24 is configured to be approximately the same as or slightly larger than the length of the riser 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 riser 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.

The side sections 22, 23 are arranged to face each other in the longitudinal direction, sandwiching the front section 21 and the bottom section 24. The side sections 22, 23 are composed of plate-like members that cover the longitudinal faces of the connecting sections 16 of the vertical members 18a, 18b between the fixing sections 17 of the vertical members 18a, 18b and the front section 21 and bottom section 24. The side section 22 on the upper floor 2 side in the longitudinal direction is configured at an angle to the longitudinal direction of the truss frame 4 so that the angle θ2 between the surface on the upper floor 2 side and the longitudinal direction of the truss frame 4 is greater than 90 degrees.

The side surfaces 22, 24 are fixed to the third cover part 30. That is, in this embodiment, the upper ends in the vertical direction of the side surfaces 22, 24 of the second cover part 20 and the lower ends in the vertical direction of the side surfaces 34, 36 of the third cover part 30 are fixed, for example, by bolts or the like.

The front portion 21, bottom portion 24, and side portions 22 and 23 that make up the second cover portion 20 may be made of a single plate-shaped member that is cut and bent into a predetermined shape, or may be made of a member in which each part is bonded by welding.

[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 eaves part 35 provided at the bottom end part of the front surface part 33 in the vertical direction.

The top surface 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 top surface of the top surface 31 in the vertical direction is inclined so that the angle θ3 with the vertical direction is greater than 90 degrees.

The side sections 34, 36 are made of rectangular plate-like members that cover both sides of the vertical members 18a, 18b in the longitudinal direction, and have bolt holes 36a (screw holes) for fastening to the second cover section 20, which will be described later.

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 of the upper surface portion 31 and the side surface portions 34, 36 on the side where the steps are arranged. 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.

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 at an angle to the front surface portion 33 so that the angle θ4 between the surface of the front surface portion 33 that is continuous with the surface of the front surface portion 33 on which the steps 6 are arranged and the surface of the front surface portion 33 on which the steps 6 are arranged in the width direction is greater than 90 degrees. The eaves portion 35 is also 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.

The third cover section 30, which is composed of the top surface section 31, side sections 34, 36, front surface section 33, and eaves section 35, may be formed from a single plate-shaped member that is cut into a predetermined shape and bent, or may be formed from a member in which each part is bonded by welding.

2-3. Method of mounting the cover Next, the method of mounting the cover 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, on the upper floor 2 side in the longitudinal direction of the joint oil pan 50c, the joint oil pan 50c is arranged so that it overlaps lower in the vertical direction than the divided oil pan 50a. On the other hand, on the lower floor 3 side in the longitudinal direction of the joint oil pan 50c, the joint oil pan 50c is arranged so that it overlaps higher in the vertical direction than the divided oil pan 50b.

Next, attach the first cover part 40. 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 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.

Next, the second cover part 20 is attached to the top surface of the first cover part 40 in the vertical direction. The second cover part 20 is positioned 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 a bolt or a screw.

Next, the third cover part 30 is attached. Here, the third cover part 30 is positioned so that the connecting part 16 of the vertical members 18a, 18b is positioned within the recess 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.

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

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 its width decreases from one side to the other side in the width direction. As a result, as shown by arrow A3 in FIG. 2, oil flowing from the upper floor 2 side to the lower floor 3 side in the longitudinal direction can be diverted as shown by arrow A4, and 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 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 to face each other. As a result, oil flowing from the upper floor 2 side in the longitudinal direction can be prevented from entering the connecting part 16 side from the first cover part 40.

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

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 greater than 90 degrees with respect to the extension direction of the vertical members 18a, 18b. In other words, 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 along the front part 21 toward the oil pan 50 side. Furthermore, the side part 22 on the upper floor 2 side in the longitudinal direction of the second cover part 20 is configured such that the angle between the surface on the upper floor 2 side in the longitudinal direction and the extension 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 flowed 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.

The second cover part 20 is provided extending 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. The upper surface part 31 of the third cover part 30 is formed to have a slope that directs the flowing oil toward the oil pan 50. This makes it possible to direct the oil flowing in the direction indicated by the arrow A1 in 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.

As described above, in this embodiment, the cover part 60 that covers the bottom 16A of the connecting part 16 of the vertical members 18a and 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 and 18b. Furthermore, in this embodiment, each part constituting the cover part 60 has no surface that is perpendicular to the direction in which the oil flows (the direction of gravity), and has a gradient that allows the flowing oil to flow toward the oil pan 50 side. As a result, the flow of oil flowing down from above to below in the cover part 60 is stopped, and there are no parts 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, flows quickly 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.

In addition, conventionally, in areas where oil is likely to accumulate, measures have been taken to prevent oil leakage by applying a large amount of caulking material to the joints between components. 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 required on site.

In this embodiment, the first cover part 40, the second cover part 20, and the third cover part 30 are fixed in order, but they may be fixed in the truss frame 4 after being fixed in advance by welding or the like. 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 integrally configured members.

In addition, in this 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 moving walkways.

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 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. It is also possible to add, delete, or replace part of the configuration of the embodiment with another configuration.

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

Claims (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 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,
A passenger conveyor, wherein at least a surface of the cover portion provided on a side toward which oil flows has a slope for directing the flowing oil toward the oil pan. A roller attached to the step via a shaft portion;
a rail fixed within the truss frame and supporting the roller;
The passenger conveyor according to claim 1 , wherein the cover portion extends above the rail in the vertical direction. 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 passenger conveyor according to claim 1 , wherein an end portion of the lower cover portion on the upper floor side is formed so as to form an angle greater than 90 degrees with respect to an extending direction of the divided frame. 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 passenger conveyor according to claim 3 , wherein the upper surface portion is configured to form an angle greater than 90 degrees with respect to an extending direction of the vertical member. 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,
An oil receiver for a passenger conveyor, wherein at least a surface of the cover portion provided on a side toward which oil flows has a slope for directing the flowing oil toward the oil pan.

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