WO2024079866A1 - 乗客コンベアのマンホール固定構造、乗客コンベア、及びマンホール固定状態の解除方法 - Google Patents

乗客コンベアのマンホール固定構造、乗客コンベア、及びマンホール固定状態の解除方法 Download PDF

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Publication number
WO2024079866A1
WO2024079866A1 PCT/JP2022/038306 JP2022038306W WO2024079866A1 WO 2024079866 A1 WO2024079866 A1 WO 2024079866A1 JP 2022038306 W JP2022038306 W JP 2022038306W WO 2024079866 A1 WO2024079866 A1 WO 2024079866A1
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WIPO (PCT)
Prior art keywords
manhole
rotating
fixing structure
rotating body
state
Prior art date
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PCT/JP2022/038306
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English (en)
French (fr)
Japanese (ja)
Inventor
辰徳 海住
一文 吉田
響士 松元
尚生 安達
Original Assignee
三菱電機ビルソリューションズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 三菱電機ビルソリューションズ株式会社 filed Critical 三菱電機ビルソリューションズ株式会社
Priority to JP2024551012A priority Critical patent/JP7672586B2/ja
Priority to PCT/JP2022/038306 priority patent/WO2024079866A1/ja
Publication of WO2024079866A1 publication Critical patent/WO2024079866A1/ja

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B23/00—Component parts of escalators or moving walkways

Definitions

  • This disclosure relates to a manhole fixing structure for a passenger conveyor, which fixes a manhole that blocks an entrance to a truss of a passenger conveyor, such as an escalator, a horizontal moving walkway, or an inclined moving walkway.
  • This disclosure also relates to a manhole.
  • This disclosure also relates to a method for releasing a fixed state of the manhole.
  • Patent Document 1 describes how a manhole (plate) blocking the entrance to the machine room, located beneath the escalator entrance and exit, is removed when workers enter the machine room located beneath the escalator entrance and exit to perform maintenance or inspection. Patent Document 1 also describes how the manhole is removed by removing the bolts securing the manhole and then attaching a jig with a handle to the manhole. With the jig with a handle secured to the manhole, the manhole can be removed by lifting it up using the jig with a handle.
  • the manhole is fixed to the truss with screws (bolts), so the bolts must be removed every time the manhole is removed, which requires a lot of effort to remove the manhole.
  • the manhole has also been simply placed inside the floor frame (joint) without being fixed. In this case, the manhole's mass is made large so that it will not come off the frame due to strong winds or vibrations. Therefore, in this case too, removing the manhole is a heavy burden for the worker.
  • the object of this disclosure is therefore to provide a manhole fixing structure for a passenger conveyor, and a passenger conveyor, that can reduce the effort required to install and remove a manhole.
  • the object of this disclosure is to provide a method for releasing the fixed state of a manhole, that can reduce the effort required to remove the manhole.
  • the manhole fixing structure disclosed herein is a manhole fixing structure for fixing a manhole of a passenger conveyor, and comprises a manhole fitting part including a manhole receiving part, a manhole suction part that is stationary with respect to a truss and made of a magnetic material, and the manhole that is supported by the manhole receiving part and fits into the manhole fitting part, the manhole has a plate-shaped manhole body, a rotating part that is rotatably attached to the manhole body, a permanent magnet, and an operating part for performing a rotation operation to rotate the rotating part, and the rotating part can be in a first state in which the manhole is attracted to the manhole suction part by the magnetic force generated by the permanent magnet, and a second state in which the manhole is rotated from the first state and the manhole is not attracted to the manhole suction part.
  • the rotating part by appropriately rotating the rotating part to switch between the first state and the second state, it is possible to appropriately select whether to suction the manhole to the manhole suction part that is stationary relative to the truss, or to release the suction of the manhole from the manhole suction part. Therefore, since the manhole can be sucked into the manhole suction part, even if the mass of the manhole is reduced, it is possible to prevent the manhole from coming off the frame due to strong winds, vibrations, etc. This improves the ease of handling of the manhole and reduces the effort required to fix and remove the manhole.
  • the manhole can be sucked in or released from suction. Therefore, compared to when the manhole is secured or released from being secured by tightening or removing a screw, the manhole can be secured or released more easily and quickly. From this perspective as well, the manhole can be made easier to handle, and the effort required to secure and remove the manhole can be reduced.
  • the manhole fixing structure may also include a plurality of the rotating parts, a rotating body that is rotatably attached to the manhole body and rotates when the rotation operation is performed, and an endless member that is stretched between the rotating body and the rotating parts.
  • the rotational power of the rotating body can be transmitted to multiple rotating parts simultaneously via the endless member. Therefore, by rotating the rotating body through a rotation operation, multiple rotating parts can be rotated simultaneously.
  • the suction force of the manhole be strengthened by using multiple manhole suction mechanisms (magnet bases), but the manhole suction force of all manhole suction mechanisms can be generated or eliminated with a single rotation operation, resulting in excellent workability and ease of handling.
  • the manhole fixing structure may also include a plurality of the rotating parts, a rotating body that is rotatably attached to the manhole body and rotates when the rotation operation is performed, and a link mechanism that connects the rotating body and the rotating parts and has a plurality of links that are connected so as to be movable relative to each other.
  • the rotational power of the rotating body can be transmitted to multiple rotating parts simultaneously via the link mechanism. Therefore, by rotating the rotating body through a rotation operation, multiple rotating parts can be rotated simultaneously.
  • the suction force of the manhole be strengthened by using multiple manhole suction mechanisms, but the manhole suction force of all manhole suction mechanisms can be generated or eliminated with a single rotation operation, resulting in excellent workability and ease of handling.
  • the operating unit may also be provided on the rotating body.
  • the rotating body can be directly rotated by the rotation operation. Therefore, not only can a manhole fixing structure that has multiple manhole suction mechanisms and can generate strong suction force be realized, but the manhole fixing structure can also be easily simplified.
  • the manhole fixing structure may be rotatably attached to the manhole body with a gap between it and the rotor, and may include a rotor with an operating unit on which the operating unit is provided, and an endless member for reducing speed that is stretched between the rotor and the rotor with an operating unit, and when the rotation operation is performed, the rotor with an operating unit rotates and the rotor rotates at a slower rotational speed than the rotor with an operating unit.
  • This configuration not only realizes a manhole fixing structure that has multiple manhole suction mechanisms and can generate strong suction force, but also reduces the force that rotates the rotor, thereby reducing the labor required for manhole suction and the labor required for releasing the suction from the manhole.
  • the shape of the manhole in a plan view when viewed from one side in the thickness direction of the manhole may be approximately rectangular, the rotating body may be rotatably attached to the center of the manhole body, and the rotating parts may be disposed at each of the four corners of the manhole.
  • the rotating parts when a rotation operation is performed, the rotating parts can be rotated simultaneously and at the same rotation speed at the four corners of the manhole. Therefore, the four corners of the manhole can be sucked into the manhole suction part with the same force, and the manhole can be stably fixed.
  • the four corners of the back surface (lower surface) of the manhole may be supported by manhole receiving parts composed of bolt heads or the like. In this case, the bolt position can be adjusted, so the degree of freedom in the height direction (thickness direction of the manhole) of the manhole fixing structure can be increased.
  • the shape of the manhole in a plan view when viewed from one side in the thickness direction of the manhole may be approximately rectangular
  • the rotating body may be rotatably attached to the center of the manhole body
  • the rotating part may be arranged along the center of a pair of approximately parallel edges of the manhole in the extension direction of the edges.
  • the manhole may have one or more holes, the inner circumferential surface of the holes may be provided with a female thread, and a rotating member may be provided that includes a hole overlapping portion that overlaps with the holes in the thickness direction of the manhole and is rotatably attached to the manhole body, and the operating portion may be a groove provided on the outer surface of the hole overlapping portion.
  • the passenger conveyor of the present disclosure may also be equipped with the manhole fixing structure of the present disclosure.
  • the passenger conveyor disclosed herein can reduce the labor required to install and remove manholes.
  • the method for releasing a manhole from a fixed state is a method for releasing a fixed state of a manhole in a passenger conveyor equipped with a manhole fixing structure of one embodiment, and includes a first step of preparing a jig having a rod-shaped portion, a handle for rotating the rod-shaped portion, a male thread provided on the outer peripheral surface of the tip side of the rod-shaped portion, and a protrusion protruding from the tip surface of the rod-shaped portion and corresponding to the groove, the height of the protrusion being higher than the height of the portion of the hole where the female thread is provided, a second step of engaging the protrusion of the jig with the groove, and a third step of rotating the rotating member by rotating the rod-shaped portion with the protrusion engaged with the groove to bring the rotating portion into the second state and screw the male thread into the female thread.
  • the rotating member can be rotated to eliminate the suction force and at the same time the jig can be attached to the manhole. Therefore, the manhole with no suction force can be pulled up from the fitting using the attached jig, allowing the manhole to be smoothly removed.
  • the manhole fixing structure for a passenger conveyor and the passenger conveyor disclosed herein can reduce the labor required to install and remove a manhole. Furthermore, the method for releasing the manhole from a fixed state disclosed herein can reduce the labor required to remove a manhole.
  • FIG. 1A to 1C are diagrams illustrating the principle of attraction and release of attraction by a magnet base.
  • 1A to 1C are diagrams illustrating the principle of attraction and release of attraction by a magnet base.
  • This is a schematic cross-sectional view of line BB in Figure 1, showing the periphery of the magnet base in the manhole.
  • 1 is a plan view of a ring-shaped member of a magnet base as viewed from one side in its thickness direction.
  • FIG. 2 is a schematic cross-sectional view of the CC line in FIG.
  • FIG. 13 is a diagram showing the outer shape of an example of a jig that can easily attach and detach the manhole of the present disclosure from a manhole fitting portion.
  • FIG. 1 is a front view of an example of an entrance to a truss that is blocked by a manhole.
  • FIG. 2 is a plan view corresponding to FIG. 1 of a passenger conveyor according to a first modified example.
  • FIG. 11 is a plan view of a passenger conveyor according to a second modified example, the plan view corresponding to FIG.
  • FIG. 11 is a plan view of a passenger conveyor according to a third modified example, the plan view corresponding to FIG.
  • FIG. 13 is a schematic cross-sectional view of the periphery of a manhole in a passenger conveyor of a fifth modified example.
  • the passenger conveyor 50 may be any of an escalator, a horizontal moving walkway, or an inclined moving walkway.
  • the X direction indicates the longitudinal direction of the manhole 1, which is used in the passenger conveyor 50 and has a substantially rectangular shape in a plan view when viewed from one side in the thickness direction
  • the Y direction indicates the width direction of the manhole 1
  • the Z direction indicates the thickness direction of the manhole 1.
  • the X direction, Y direction, and Z direction are mutually perpendicular.
  • the manhole suction mechanism (magnet base) is defined as a mechanism that includes a permanent magnet and a rotating part that can take a first state in which the manhole is attracted to the manhole suction part by the magnetic force generated by the permanent magnet, and a second state in which the manhole is rotated from the first state and is not attracted to the manhole suction part, but does not include a manhole suction part.
  • the manhole suction mechanism is defined as a mechanism that includes a permanent magnet and a rotating part that can take a first state in which the manhole is attracted to the manhole suction part by the magnetic force generated by the permanent magnet, and a second state in which the manhole is rotated from the first state and is not attracted to the manhole suction part, but does not include a manhole suction part.
  • FIG. 1 is a schematic plan view of a manhole 1 for opening and closing an entrance to and exit from a truss 60 (see FIG. 7) in a passenger conveyor 50 according to one embodiment of the present disclosure, as viewed from the front side in the Z direction.
  • the manhole 1 is included in a manhole fixing structure 40.
  • the manhole 1 comprises a plate-shaped manhole body 2, magnet bases 3 attached to each of the four corners on the back side of the manhole body 2, a rotor 4 rotatably attached to the center 2a of the manhole body 2, and four endless members 5.
  • the endless members 5 are loop-shaped members with no ends, and are formed, for example, of a belt, wire, or chain.
  • the magnet base 3 has a permanent magnet 6 (see Figure 3) and a rotating part 3a that is rotatably attached to the manhole body 2.
  • the rotating body 4 includes a pulley having a cylindrical outer circumferential surface
  • the rotating part 3a also includes a pulley having a cylindrical outer circumferential surface.
  • the endless member 5 is a chain
  • the rotating body 4 includes a sprocket with radially protruding protrusions arranged at equal intervals in the circumferential direction
  • the rotating part 3a also includes a sprocket with radially protruding protrusions arranged at equal intervals in the circumferential direction.
  • the endless member 5 is stretched across the rotating body 4 and the rotating part 3a. As a result, the rotational power of the rotating body 4 is transmitted to the rotating part 3a via the endless member 5.
  • the magnet base 3 has a rotating part 3a and a stationary part 3b that is stationary relative to the manhole body 2.
  • the rotating part 3a When the rotating part 3a is located at a first relative position relative to the stationary part 3b, the magnet base 3 is attracted to the manhole suction part.
  • the manhole suction part is stationary relative to the truss 60 and is made of a magnetic material such as iron.
  • the rotating part 3a when the rotating part 3a is located at a second relative position different from the first relative position relative to the stationary part 3b, the magnet base 3 is no longer attracted to the stationary part that is stationary relative to the truss 60 (the stationary part includes the truss 60 and the manhole suction part).
  • Figure 2A is a schematic plan view of an example of the magnet base 603 as seen from the Z-direction front side of the manhole body 602, and Figure 2B is a cross-sectional view of line A-A in Figure 2A.
  • a disk-shaped rotating part 608 is rotatably attached to the manhole body 602.
  • the upper surface of the rotating part 608 is provided with a groove 608a that is linear in plan view and into which the tip of a flat-head screwdriver can be fitted.
  • the groove 608a is an example of an operating part.
  • a permanent magnet 606 is fixed to the lower surface of the operating part.
  • the permanent magnet 606 is composed of a bar magnet.
  • Below the permanent magnet 606 is a plate member 609 that is approximately square in plan view and is positioned so as to be stationary relative to the manhole body 602.
  • the rotating part 608, the permanent magnet 606, and the plate member 609 are positioned so that their respective centers overlap in the thickness direction of the plate member 609.
  • the plate member 609 has a non-magnetic portion 609a that includes the center and extends linearly from one end to the other end.
  • the non-magnetic portion 609a is made of a non-magnetic material.
  • the non-magnetic portion 609a exists over the entire thickness direction of the plate member 609.
  • On both sides of the non-magnetic portion 609a there are magnetic portions 609b made of a magnetic material.
  • the non-magnetic portion 609a has a configuration in which the two magnetic portions 609b are separated by the non-magnetic portion 609a that passes through the center.
  • the width of the bar magnet that constitutes the permanent magnet 606 is greater than the width of the non-magnetic portion 609a.
  • the bar magnet that constitutes the permanent magnet 606 rotates relative to the manhole body 602 and the plate member 609.
  • the magnetic flux of the permanent magnet 606 passes from the N pole through the magnetic parts 609b on both sides and then enters the S pole, and the magnetic flux does not reach the back side (lower side) of the plate member 609. Therefore, the magnet base 603 is not attracted to the manhole suction part (not shown) that is located on the back side of the plate member 609 and is made of a magnetic material.
  • the permanent magnet 606 rotates from the second state so that the N pole is located at a position where it overlaps one of the magnetic parts 609b in the Z direction, and the S pole is located at a position where it overlaps the other magnetic part 609b in the Z direction.
  • the N pole and the S pole are separated by the non-magnetic part 609a through which magnetic flux cannot pass. Therefore, the magnetic flux emitted from the N pole extends through one of the magnetic parts 609b to the back side in the Z direction, passes through the manhole suction part, and then extends through the other magnetic part 609b to the front side in the Z direction and enters the S pole.
  • the manhole suction part is attracted to the permanent magnet 606 by the magnetic flux extending in this way, and as a result, the manhole main body 602 is attracted to the manhole suction part.
  • the manhole main body 602 to which the magnet base 603 is fixed can be attracted to the manhole suction part by this principle, or the attraction can be released.
  • Figure 3 is a schematic cross-sectional view of the B-B line in Figure 1, and is a schematic cross-sectional view of the magnet base 3 and its periphery in the manhole 1.
  • the magnet base 3 includes a permanent magnet 6 fixed to the bottom surface of the manhole body 2, and a bearing fixing part 11 extending from the center of the permanent magnet 6 to the rear side in the Z direction.
  • the bearing fixing part 11 is made of a non-magnetic material such as ceramic and has a cylindrical shape.
  • the bearing fixing part 11 is fixed to the rear surface of the permanent magnet 6, for example, with an adhesive or the like.
  • the permanent magnet 6 is made of a bar magnet and extends in a direction perpendicular to the paper surface of Figure 3 ( ⁇ direction).
  • the magnet base 3 further includes a ceramic bearing 12 and an annular member 13.
  • the annular member 13 is an example of a member that can realize the rotating part 3a.
  • the annular member 13 has a cylindrical inner peripheral surface 13c, and the cylindrical inner peripheral surface 13c is fitted and fixed to the ceramic bearing 12.
  • FIG. 4 is a plan view of the annular member 13 as viewed from one side in the thickness direction.
  • the annular member 13 has a non-magnetic material portion 13a extending in the radial direction and made of a non-magnetic material, and two magnetic material portions 13b located on either side of the non-magnetic material portion 13a and made of a magnetic material.
  • the annular member 13 has a shape that is approximately plane symmetrical with respect to the plane.
  • the non-magnetic material portion 13a extends from one end to the other end in the radial direction so as to separate the two magnetic material portions 13b, and exists from one end to the other end in the thickness direction.
  • the width of the non-magnetic material portion 13a is shorter than the width of the bar magnet that constitutes the permanent magnet 6.
  • the endless member 5 is hung on the cylindrical outer periphery of the annular member 13.
  • the annular member 13 rotates relative to the bearing fixing part 11 due to the rotational power from the endless member 5, it also rotates relative to the permanent magnet 6 composed of a bar magnet. Therefore, by appropriately rotating the annular member 13 by an appropriate rotation angle based on the above-mentioned principle, the magnet base 3 can be attracted to the stationary part that is stationary with respect to the truss 60, or the attraction can be released.
  • the extension direction ( ⁇ direction) of the permanent magnet 6 composed of a bar magnet is perpendicular to the extension direction ( ⁇ direction) of the non-magnetic part 13a. Therefore, the annular member 13 is in the first state, and the magnet base 3 is attracted to the manhole suction part not shown.
  • Figure 5 is a schematic cross-sectional view of the C-C line in Figure 1, and is a schematic cross-sectional view of the rotor 4 and its periphery in the manhole 1.
  • a screw hole 17 which is a through hole, is provided in the center of the manhole body 2.
  • a ring-shaped protrusion 18 that protrudes to the rear side in the Z direction is provided on the back side of the manhole body 2.
  • the rotor 4 is rotatably fixed to the cylindrical inner surface of the protrusion 18 via a bearing 19.
  • the manhole 1 also has a ring-shaped elastic member 20 fixed or attached to both the inner and outer rings of the bearing 19.
  • the elastic member 20 is made of a rubber material or the like that generates a restoring force.
  • Four endless members 5 are wound at intervals in the Z direction around the cylindrical outer peripheral surface of the rotor to which the bearing 19 is not fixed.
  • the cylindrical outer peripheral surface may have three annular separation protrusions 21 that protrude radially outward at intervals in the Z direction, and the separation protrusions 21 may reliably separate the endless members 5 adjacent in the Z direction in the Z direction.
  • the endless members 5 do not appear in FIG. 5, which is a schematic cross-sectional view of line C-C in FIG. 1, the endless members 5 are wound around each of the four cylindrical outer peripheral surface portions 22 that are separated by the three annular separation protrusions 21.
  • the front side of the rotating body 4 is provided with a groove 4a that is linear in plan view and into which the tip of a flathead screwdriver can fit.
  • the groove 4a is an example of an operating part.
  • the manhole 1 can be removed, for example, using a jig 30 whose outline is shown in FIG. 6.
  • the jig 30 has a T-shaped outline, a handle 31 that extends linearly, and a rod-shaped portion 32 that extends perpendicularly to the handle 31 from the center of the handle 31.
  • the rod-shaped portion 32 has a male threaded portion 33 with a male thread 33a provided thereon, and a plate-shaped protruding portion 34 that protrudes from the tip surface of the male threaded portion 33 at the tip side.
  • the plate-shaped protruding portion 34 protrudes approximately parallel to the extension direction of the male threaded portion 33.
  • the length of the plate-shaped protruding portion 34 in the extension direction of the rod-shaped portion 32 is longer than the X-direction length of the portion of the manhole body 2 where the female thread 28 (see FIG. 5) is provided.
  • Figure 7 is a front view of an example of an entrance 65 to a truss 60 that is blocked by a manhole 1, as viewed from the front of the entrance 65, and a plan view of the entrance 65 to the truss 60 as viewed from above in the height direction, for example, when the manhole expands horizontally while properly blocking the entrance 65.
  • the manhole fitting portion 55 into which the manhole 1 fits has manhole receiving portions 56 that support the back side of the manhole 1 at the four corners of the opening, which has a roughly rectangular planar shape.
  • each manhole receiving portion 56 is formed by the head 58 of a bolt 57 having a tip that is fastened and fixed to a stationary portion that is stationary relative to the truss 60.
  • the manhole fitting portion 55 has a side 69 that faces closely to the side of the manhole 1. When the manhole 1 is properly fitted into the manhole fitting portion 55, the front surface of the manhole 1 is approximately flush with the floor surface 64 of the building on which passengers walk.
  • the edges that define the entrance 65 to the truss 60 include a pair of first edges 41 that extend substantially parallel to each other, and a pair of second edges 42 that extend substantially perpendicular to the first edges 41 and also extend substantially parallel to each other.
  • Near the entrance 65 to the truss 60 there are a pair of beams 46 that extend substantially parallel to the pair of first edges 41.
  • the upper surfaces of the pair of beams 46 may support the back surface of the manhole 1 that is properly fitted into the manhole fitting portion 55, or may be spaced apart in the Z direction from the back surface of the manhole 1 that is properly fitted into the manhole fitting portion 55.
  • the manhole receiving portion 56 serves as a manhole suction portion. More specifically, when the manhole 1 is properly fitted into the manhole fitting portion 55, the manhole receiving portion 56 is integral with the bearing fixing portion 11 of the magnet base 3 and supports the back surface 39a of the manhole mounting portion 39 (see FIG. 3) which is disk-shaped.
  • the restoring force of the elastic member 20 causes the elastic member 20 to be in a state where it is not twisted in the circumferential direction. In this state, the rotating portion 3a (annular member 13) of each magnet base 3 is in the first state, and the manhole receiving portion 56 is attracted to the permanent magnet 6 of the magnet base 3.
  • the manhole 1 is removed, for example, in the following procedure.
  • the tip of the plate-shaped protrusion 34 of the jig 30 is fitted into the linear groove 4a (see FIG. 5). Because the length of the rod-shaped portion 32 of the plate-shaped protrusion 34 in the extending direction is longer than the thickness of the portion of the manhole body 2 where the female thread 28 is provided, the tip of the plate-shaped protrusion 34 of the jig 30 can be fitted into the groove 4a before the male thread 33a of the jig 30 is screwed into the female thread 28.
  • the male thread 33a of the jig 30 is screwed into the female thread 28 of the manhole body 2 and tightened all the way.
  • the rod-shaped portion 32 of the jig 30 rotates.
  • This rotation causes the rotor 4 including the groove (operating portion) 4a to rotate, which causes the endless member 5 to move in a circular motion.
  • rotational power is imparted from the endless member 5 to the rotating portion 3a (annular member 13) of the magnet base 3, causing the rotating portion 3a to rotate.
  • a person uses the handle 31 of the jig 30 to lift the manhole 1 to which the jig 30 is fixed, and then fits the manhole 1 into the manhole fitting portion 55.
  • the jig 30 is then rotated relative to the manhole 1 to release the male thread 33a of the jig 30 from the female thread 28 of the manhole body 2.
  • the jig 30 is then pulled to pull the plate-shaped protruding portion 34 out of the groove 4a, and the jig 30 is removed from the manhole 1.
  • the elastic member 20 When the jig 30 is removed from the manhole 1, the elastic member 20 returns to a state in which it is not twisted in the circumferential direction due to its restoring force. This causes the annular member 13 of the magnet base 3 to enter the first state, and the manhole 1 is attracted to the manhole receiving portion 56 and fixed.
  • the manhole fixing structure 40 is a structure for fixing the manhole 1 of the passenger conveyor 50.
  • the manhole fixing structure 40 includes the manhole fitting portion 55 including the manhole receiving portion 56, the manhole suction portion (in this embodiment, it coincides with the manhole receiving portion 56) that is stationary with respect to the truss 60 and is made of a magnetic material, and the manhole 1 that is supported by the manhole receiving portion 56 and fits into the manhole fitting portion 55.
  • the manhole 1 also has a plate-shaped manhole main body 2, a rotating portion 3a (annular member 13) that is rotatably attached to the manhole main body 2, a permanent magnet 6, and a groove (operating portion) 4a for performing a rotation operation to rotate the rotating portion 3a.
  • the rotating portion 3a can be in a first state in which the manhole 1 is attracted to the manhole suction portion by the magnetic force generated by the permanent magnet 6, and a second state in which the rotating portion 3a is rotated from the first state and the manhole 1 is not attracted to the manhole suction portion.
  • the rotating portion 3a by appropriately rotating the rotating portion 3a to appropriately switch between the first state and the second state, it is possible to appropriately select whether to suction the manhole 1 to the manhole suction portion that is stationary relative to the truss 60, or to release the suction of the manhole 1 to the manhole suction portion. Therefore, since the manhole 1 can be sucked into the manhole suction portion, even if the mass of the manhole 1 is reduced, it is possible to prevent the manhole 1 from coming off the frame due to strong winds, vibrations, etc. This improves the ease of handling of the manhole 1 and reduces the effort required to fix and remove the manhole 1.
  • the manhole 1 can be sucked in or released from suction. Therefore, compared to when the manhole is fixed or released by tightening or removing a screw, the manhole 1 can be fixed or released more easily and quickly. From this perspective as well, the ease of handling of the manhole 1 can be improved, and the effort required to fix or remove the manhole 1 can be reduced.
  • the manhole fixing structure 40 may also include a plurality of rotating parts 3a, a rotating body 4 that is rotatably attached to the manhole body 2 and rotates when a rotation operation is performed, and an endless member 5 that is stretched between the rotating body 4 and the rotating parts 3a.
  • the rotational power of the rotating body 4 can be transmitted simultaneously to multiple rotating parts 3a via the endless member 5. Therefore, by rotating the rotating body 4 through a rotation operation, multiple rotating parts 3a can be rotated simultaneously.
  • the suction force of the manhole 1 be strengthened by using multiple magnet bases 3, but the manhole suction force of all magnet bases 3 can be generated or eliminated with a single rotation operation, resulting in excellent workability and ease of handling.
  • a groove (operating portion) 4a may be provided on the rotating body 4.
  • the rotor 4 can be directly rotated by a rotation operation. Therefore, not only can a manhole fixing structure 40 that has multiple magnet bases 3 and can generate a strong suction force be realized, but the structure of the manhole fixing structure 40 can also be easily simplified.
  • the shape of the manhole 1 in a plan view when viewed from one side in the thickness direction of the manhole 1 may be approximately rectangular, the rotating body 4 may be rotatably attached to the center of the manhole body 2, and the rotating parts 3a may be arranged one at each of the four corners of the manhole.
  • the rotating parts 3a when a rotation operation is performed, the rotating parts 3a can be rotated simultaneously and at the same rotation speed at the four corners of the manhole 1. Therefore, the four corners of the manhole 1 can be sucked into the manhole receiving part (manhole suction part) 56 with the same force, and the manhole 1 can be stably fixed.
  • the manhole 1 may be supported at the four corners of its underside by the manhole receiving part 56 composed of the heads 58 of the bolts 57 or the like. In this case, the position of the bolts 57 can be adjusted, so the degree of freedom of the Z-direction dimension of the manhole fixing structure 40 can be increased.
  • the manhole 1 may also have one or more threaded holes 17, a female thread 28 provided on the inner peripheral surface of the threaded hole 17, a hole overlapping portion 78 (see FIG. 5) that overlaps with the threaded hole 17 in the thickness direction of the manhole 1, and a rotating body (rotating member) 4 rotatably attached to the manhole body 2, and the operating portion may be a groove 4a provided on the outer surface of the hole overlapping portion 78.
  • the passenger conveyor 50 of the present disclosure is equipped with a manhole fixing structure 40, which reduces the labor required to install and remove the manhole 1.
  • the method of releasing a manhole from a fixed state disclosed herein is a method of releasing a manhole from a fixed state on a passenger conveyor 50, in which the manhole 1 has one or more threaded holes 17, a female thread 28 is provided on the inner surface of the hole, includes a hole overlapping portion 78 that overlaps the threaded hole 17 in the thickness direction of the manhole 1, and is provided with a rotating body 4 rotatably attached to the manhole main body 2, and has a manhole fixing structure 40 whose operating portion is a groove 4a provided on the front surface of the hole overlapping portion 78.
  • the method of releasing the fixed state of the manhole of the present disclosure includes a first step of preparing a jig 30 having a rod-shaped portion 32, a handle 31 for rotating the rod-shaped portion 32, a male screw 33a provided on the outer peripheral surface of the tip side of the rod-shaped portion 32, and a plate-shaped protrusion 34 that protrudes from the tip surface of the rod-shaped portion 32 and corresponds to the groove 4a, the plate-shaped protrusion 34 being higher than the height of the portion of the screw hole 17 where the female screw 28 is provided, a second step of engaging the plate-shaped protrusion 34 of the jig 30 with the groove 4a, and a third step of rotating the rotating body 4 by rotating the rod-shaped portion 32 with the plate-shaped protrusion 34 engaged with the groove 4a to bring the rotating portion 3a into the second state and screwing the male screw 33a into the female screw 28.
  • the rotating body 4 can be rotated to eliminate the suction force, and at the same time the jig 30 can be attached to the manhole 1, and the manhole 1 with the suction force eliminated can be pulled up from the manhole receiving portion (manhole fitting portion) 56 using the jig 30 attached to it.
  • the rotational power of the rotating body 4 is transmitted to the rotating part 3a of the magnet base 3 via the endless member 5.
  • the rotational power of the rotating body may be transmitted to the rotating part of the magnet base using a link mechanism.
  • the manhole fixing structure 130 may include a plurality of rotating parts 113, a rotating body 115 rotatably attached to the manhole body 102 and rotates when a rotation operation is performed, and a link mechanism 105 having a plurality of links 145 that connect the rotating body 115 and the rotating parts 113 and are connected so as to be movable relative to each other.
  • the rotational power of the rotating body 115 can be transmitted to multiple rotating parts 113 simultaneously via the link mechanism 105. Therefore, by rotating the rotating body 115 through a rotation operation, multiple rotating parts 113 can be rotated simultaneously. As a result, not only can the suction force of the manhole 101 be strengthened by using multiple magnet bases 103, but the manhole suction force of all magnet bases 103 can be generated or eliminated with a single rotation operation, resulting in excellent workability and ease of handling.
  • the manhole fixing structure 230 may be rotatably attached to the manhole body 202 with a gap between it and the rotating body 215, and may include an operating part-attached rotating body 234 having an operating part 219, and a deceleration endless member 239 that is stretched across the rotating body 215 and the operating part-attached rotating body 234.
  • the operating part-attached rotating body 234 may rotate in the direction indicated by the arrow H, and the rotating body 215 may rotate in the direction indicated by the arrow I at a slower rotational speed than the operating part-attached rotating body 234, and as a result, the rotating part 213 may rotate in the direction indicated by the arrow J.
  • This configuration not only realizes a manhole fixing structure 230 that has multiple rotating parts 213 and can generate strong suction force, but also reduces the force that rotates the rotor 215, thereby reducing the effort required to suck in the manhole 201 and the effort required to release the suction of the manhole 201.
  • the rotating bodies 215, 234 are configured in two stages, and the ratio of the outer diameters of the two rotating bodies 215, 234 is changed to configure a speed reduction mechanism, making it possible to reduce the force applied by a person to the operating unit 219.
  • a speed reduction mechanism may be configured using three or more rotating bodies as necessary.
  • the speed reduction endless member 239 may be a belt, wire, or chain, and each of the rotating body 215 and the rotating body with operating unit 234 may include a pulley or a sprocket.
  • the magnet base 3 has been described as being fixed to the four corners of the manhole body 2.
  • the magnet base may be fixed to a location other than the four corners of the manhole body.
  • the magnet base may be fixed only to two corners located diagonally opposite each other on the back side of the manhole body.
  • the shape of the manhole 301 in a plan view when viewed from one side in the thickness direction of the manhole 301 of the third modified example may be substantially rectangular.
  • the rotating body 315 may be rotatably attached to the center of the manhole body 302.
  • the magnet base 303 may be arranged along the center of the extension direction of each of a pair of substantially parallel edges 356 in the manhole 301.
  • a pair of beams 46 made of a magnetic material that extend linearly and are positioned so as to overlap a pair of edges 356 of the manhole 301 in the Z direction.
  • a pair of beams 46 can be used as a manhole suction part to stably fix the manhole 301.
  • only one magnet base may be fixed to the manhole body, or any number of magnet bases (manhole suction mechanisms) greater than or equal to two may be fixed to the manhole body.
  • the magnet base 403 may have the operating part 419.
  • the manhole main body 402 may have a screw hole 417 having a female thread 428.
  • the magnet base 403 may have a cylindrical part 480 fixed to the back surface of the manhole main body 402, and the back side of the cylindrical part 480 may be sealed with a disk part 485 including a non-magnetic part 485a and two magnetic parts 485b described using FIG. 2A and FIG. 2B.
  • the disk member 490 may have a permanent magnet 406 made of a rod-shaped magnet fixed to its back surface, and the disk member 490 may be rotatably fixed to the cylindrical inner circumferential surface of the cylindrical portion 480 via a bearing 495.
  • the front surface of the disk member 490 may have an operating portion 419 made of a groove or the like.
  • the disk member 490 may have an annular elastic member 497 made of an elastic material such as rubber, which is fixed to both the outer and inner rings of the bearing 495. As shown in FIG.
  • the rod-shaped permanent magnet 406 and the linear non-magnetic portion 485a may extend perpendicular to each other due to the force from the elastic member 497, and the disk member 490 constituting the rotating portion may be in the first state.
  • a manhole fixing structure 430 that can easily select between suction and release by the magnet base 403 and has a simple structure can be constructed.
  • the manhole 501 may include multiple manhole parts 501a and 501b that are separate from each other.
  • it may include a first manhole part 501a and a second manhole part 501b that is separate from the first manhole part 501a.
  • a thin-walled protrusion 511 may be provided at one end of the first manhole part 501a in one direction, and the protrusion 511 may be supported on the upper surface of a support part 541 provided in the truss 560.
  • a thin-walled protrusion 512 may be provided at one end of the second manhole part 501b in one direction, and the protrusion 512 may be sandwiched between the upper surface of a support part 542 provided in the truss 560 and the other end of the first manhole part 501a in one direction.
  • the other end of the second manhole section 501b in one direction may be attracted and fixed to the manhole suction section 577 using the manhole suction mechanism (magnet base) 503a described in detail above.
  • a magnet base 503b may be provided on the first manhole section 501a, and the first manhole section 501a may be attracted and fixed to the protrusion 512 of the second manhole section 501b while the manhole 501 is blocking the entrance to the truss 560. In this way, the manhole 501 can be reliably prevented from being blown away by the wind, and the manhole 501 can be reliably and safely blocked off the entrance to the truss 560.
  • the first manhole section is provided with a protrusion that fits into the truss, and the last manhole section is attracted and fixed to a stationary section that stays stationary on the truss using a manhole suction mechanism (magnetic base), preventing the manhole from floating up and allowing all manholes to be stably fixed.
  • a manhole suction mechanism magnetic base
  • the T-shaped jig 30 may be constructed by providing a groove on the tip surface of an existing T-shaped jig and attaching a flat attachment to the groove.
  • the manhole when removing an existing manhole that does not have a manhole suction mechanism (magnetic base), the manhole can be removed by not fixing an attachment to the groove.
  • the manhole when removing a manhole that has a manhole suction mechanism (magnetic base), the manhole can be removed by fixing an attachment to the groove.
  • a highly versatile T-shaped jig can be constructed. Note that the operating part may be rotated using a tool such as an impact driver without using a T-shaped jig.
  • the operating part is a groove, and the tip of the jig has a protrusion that fits into the groove.
  • the operating part may be a protrusion, and the tip surface of the jig may have a groove that fits into the protrusion.
  • the operating part may be configured in any structure that can engage with a jig or tool.

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PCT/JP2022/038306 2022-10-14 2022-10-14 乗客コンベアのマンホール固定構造、乗客コンベア、及びマンホール固定状態の解除方法 WO2024079866A1 (ja)

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JP2024551012A JP7672586B2 (ja) 2022-10-14 2022-10-14 乗客コンベアのマンホール固定構造、乗客コンベア、及びマンホール固定状態の解除方法
PCT/JP2022/038306 WO2024079866A1 (ja) 2022-10-14 2022-10-14 乗客コンベアのマンホール固定構造、乗客コンベア、及びマンホール固定状態の解除方法

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0247245U (enrdf_load_stackoverflow) * 1988-09-22 1990-03-30
JPH09249371A (ja) * 1996-03-14 1997-09-22 Mitsubishi Denki Bill Techno Service Kk マンホールの蓋移動装置
KR20110106117A (ko) * 2010-03-22 2011-09-28 삼화주철공업 주식회사 영구자석을 이용하여 잠금 기능을 구현하는 잠금 장치 및 이를 이용하는 맨홀
JP2013049562A (ja) * 2011-08-31 2013-03-14 Toshiba Elevator Co Ltd 乗客コンベアのコム及びこのコムを備える乗客コンベア
JP2018108868A (ja) * 2016-12-28 2018-07-12 株式会社日立ビルシステム 乗客コンベア用プレート収納・敷設装置及びその方法
JP2019210080A (ja) * 2018-06-01 2019-12-12 三菱電機ビルテクノサービス株式会社 乗客コンベア

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0247245U (enrdf_load_stackoverflow) * 1988-09-22 1990-03-30
JPH09249371A (ja) * 1996-03-14 1997-09-22 Mitsubishi Denki Bill Techno Service Kk マンホールの蓋移動装置
KR20110106117A (ko) * 2010-03-22 2011-09-28 삼화주철공업 주식회사 영구자석을 이용하여 잠금 기능을 구현하는 잠금 장치 및 이를 이용하는 맨홀
JP2013049562A (ja) * 2011-08-31 2013-03-14 Toshiba Elevator Co Ltd 乗客コンベアのコム及びこのコムを備える乗客コンベア
JP2018108868A (ja) * 2016-12-28 2018-07-12 株式会社日立ビルシステム 乗客コンベア用プレート収納・敷設装置及びその方法
JP2019210080A (ja) * 2018-06-01 2019-12-12 三菱電機ビルテクノサービス株式会社 乗客コンベア

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