Clearance measuring device for elevator and clearance measuring method for elevator

Abstract

The invention provides a gap measuring device and a gap measuring method for an elevator, which can measure a gap between a door vane and a roller of a landing door installed on the uppermost layer with high precision even in an elevator without a machine room. The gap measuring device of the elevator is used for measuring gaps between two door blades and a roller in a first direction perpendicular to the up-down direction under the state that the two door blades are arranged on a door of a car of the elevator and extend in the up-down direction and the roller arranged on a door of a landing are not clamped with each other. The gap measuring device of the elevator is provided with a light source, and the light source can form two light rays extending along the two door blades around the roller.

Description

Technical Field

[0001] This disclosure relates to an elevator clearance measuring device and a clearance measuring method. Background Technology

[0002] In order to enable the landing doors and car doors to open and close in a coordinated manner, the elevator is equipped with a door engaging device that engages the landing doors and car doors. The door engaging device includes a set of door blades installed on the car door and rollers installed on the landing doors of each floor. The set of door blades extends in the vertical direction and is arranged opposite each other in such a way that they clamp the rollers in the opening and closing direction when the car stops at the stopping position of each floor.

[0003] Typically, when inspecting the door locking device, the operator rides in the elevator car at each floor stop and measures the gap formed between the door cutter and the rollers at each floor. Japanese Patent Application Publication No. 2021-024719 discloses a gap measuring tool for an elevator door locking device used in such a measurement method. The gap measuring tool for an elevator door locking device described in Patent Document 1 includes: two elongated measuring plates inserted between the door cutter and the rollers; and a threaded component connecting the two elongated measuring plates in a manner that allows adjustment of the spacing between the two measuring plates. In the gap measuring tool described in Patent Document 1, the two measuring plates are inserted between the door cutter and the rollers, and the spacing between the two measuring plates is made to match the gap between the door cutter and the rollers. The spacing between the two measuring plates is measured, thereby determining the gap between the door cutter and the rollers. Summary of the Invention

[0004] However, depending on the type of elevator, the aforementioned gap measuring tools and methods are sometimes insufficient to measure the gap with high precision.

[0005] For example, in so-called machine-room-less elevators where no machine room is located above the shaft, the space required for operators to perform inspections cannot be guaranteed on the car at the top floor. Therefore, inspections of the door locking mechanism on the top floor are typically performed with the car positioned below the top floor's stopping position, ensuring sufficient space for the operator to perform the inspection. In this configuration, the door cutter moves downwards from the rollers of the top floor door, making it difficult to accurately measure the gap between the door cutter and the rollers of the top floor door.

[0006] The main objective of this disclosure is to provide a gap measuring device and a gap measuring method for elevators, which can measure the gap between the door knife and the roller of the uppermost landing door with high precision, even in machine-room-less elevators.

[0007] The elevator clearance measuring device disclosed herein includes a light source that forms two rays around the roller that extend along the two door blades respectively.

[0008] The above and other objects, features, aspects and advantages of the invention will become apparent from the following detailed description of the invention as understood in conjunction with the accompanying drawings. Attached Figure Description

[0009] Figure 1 This is a diagram illustrating an example of an elevator.

[0010] Figure 2 It means Figure 1 The diagram shows the structure of the elevator car door on the side opposite the landing door.

[0011] Figure 3 It means Figure 1 The diagram shows the structure of the landing doors on each floor of the elevator, opposite to the car doors.

[0012] Figure 4 It means in Figure 1 The diagram shows the state of the elevator car when it is stopped at the top floor.

[0013] Figure 5 yes Figure 4 A magnified view of a portion of region V shown.

[0014] Figure 6 From Figure 5 The diagram shown by arrow VI indicates the state of the car door being closed.

[0015] Figure 7 It indicates being in Figure 6 The diagram shows the car door in the initial opening state.

[0016] Figure 8 From Figure 6 and Figure 7 The diagram shown by arrow VIII is an example of the operation of a door locking device.

[0017] Figure 9 This is a diagram showing the elevator clearance measuring device of Embodiment 1 and its usage status.

[0018] Figure 10 From Figure 9 The diagram shown by arrow X represents the rollers of the door locking device and two rays of light emitted from the light source of the elevator gap measuring device.

[0019] Figure 11 This is a perspective view of the first state of the structure example of the elevator gap measuring device of Embodiment 1, viewed from above.

[0020] Figure 12This is a perspective view of the first state of the structure example of the elevator gap measuring device of Embodiment 1, viewed from below.

[0021] Figure 13 This is a perspective view of the first state of the structure of the elevator clearance measuring device of Embodiment 1, viewed from the side.

[0022] Figure 14 This is a perspective view of the second state of the structure example of the elevator gap measuring device of Embodiment 1, viewed from above.

[0023] Figure 15 This is a perspective view showing the usage state of a structural example of the elevator clearance measuring device according to Embodiment 1.

[0024] Figure 16 This is a diagram showing the elevator clearance measuring device of Embodiment 2 and its usage status.

[0025] Figure 17 From Figure 16 The diagram shown by arrow XVII is a representation of the rollers of the door locking device, the two rays of light emitted from the light source of the elevator clearance measuring device, and the plumb bob component of the elevator clearance measuring device.

[0026] Figure 18 This is a diagram illustrating a first variation of the elevator clearance measuring device according to Embodiment 1 or 2.

[0027] Figure 19 This is a diagram illustrating a second variation of the elevator clearance measuring device according to Embodiment 1 or 2. Detailed Implementation

[0028] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. Furthermore, identical structures will be labeled with the same reference numerals and their descriptions will not be repeated. In each figure, the vertical direction Z, the first direction DR1 for opening and closing the car door and landing door, and the second direction DR2 for connecting the car and the landing are introduced. First, a structural example of the elevator and the clearance that the clearance measuring device for the elevator in this embodiment measures will be described.

[0029] <Example of an elevator structure>

[0030] Figure 1 This describes an example of an elevator to which the clearance measuring device of this embodiment can be applied. Figures 2-8 This describes an example of an elevator door locking device to which the elevator clearance measuring device of this embodiment can be applied.

[0031] Figure 1The elevator 100 shown is a machine-room-less elevator. The elevator 100 includes, for example, a shaft 101, a pit 102, a car 200, multiple floors 300, a traction machine 111, ropes 112, multiple sheaves 113 and 114, a counterweight 115, and a control device 116. The elevator 100 does not have a machine room located above the shaft 101.

[0032] The shaft 101 extends in the vertical direction Z. The pit 102 is connected to the shaft 101 at a position lower than the shaft 101. The shaft 101 has an upper surface 101A. The pit 102 has a bottom surface 102A opposite to the upper surface 101A in the vertical direction.

[0033] The car 200 moves up and down within the hoistway 101. The car 200 includes a car compartment and a car door 201. An entrance / exit is provided in the car compartment. The car door 201 is reciprocated in a first direction DR1 by a drive unit (not shown), thereby opening and closing the entrance / exit of the car compartment. A car sill 204 (see reference) is provided at the lower end of the entrance / exit of the car compartment. Figure 2 A crossbeam (not shown) is provided above the entrance / exit of the car compartment. The reciprocating movement of the car door 201 along the first direction DR1 is guided by a sill groove provided in the car sill 204 and a guide rail provided in the crossbeam.

[0034] The car 200 also has an upper surface 200A and a lower surface located on the side opposite to the upper surface 200A. The upper surface 200A includes, for example, the upper surface of the car compartment and the upper surface and side surfaces of the crossbeams mounted on the car compartment. The upper surface 200A is opposite to the upper surface 101A of the hoistway 101 in the vertical direction Z. The lower surface of the car 200 is opposite to the bottom surface 102A of the pit 102 in the vertical direction Z. A plurality of anti-cord pulleys 114 are installed on the car 200.

[0035] Multiple landing stations 300 each have landing doors 301. Each landing door 301 is opened and closed by a car door 201. Each landing station 300, for example, has multiple landing doors 301. The multiple landing doors 301 are arranged along a first direction DR1 in a closed state and along a second direction DR2 in an open state. The multiple landing doors 301 have a first landing door 301A and a second landing door 301B. The first landing door 301A is the door among the multiple landing doors 301 that moves the longest distance in the first direction DR1 between the closed and open states.

[0036] Multiple landings 300 include the lowest landing 300L and the highest landing 300H. The space between the upper surface 200A of the car 200 parked at the highest landing 300H and the upper surface 101A of the hoistway 101 is smaller than the space available for the operator to work.

[0037] A traction machine 111 is disposed in the pit 102. Ropes 112 are wound around the traction machine 111 and multiple anti-corrosion pulleys 113 and 114. One end of the rope 112 is connected to the car 200. The other end of the rope 112 is connected to the counterweight 115. Multiple anti-corrosion pulleys 113 and 114 are disposed in the hoistway 101. Multiple anti-corrosion pulleys 113 are mounted, for example, on the upper surface 101A. Multiple anti-corrosion pulleys 114 are mounted, for example, on the lower surface of the car 200. The counterweight 115 rises and falls in the opposite direction to the car 200 as the car 200 rises and falls. A control device 116 controls the rising and falling of the car 200. The control device 116 is disposed, for example, in the pit 102.

[0038] like Figure 2 As shown, the car 200 has, for example, a plurality of car doors 201. The plurality of car doors 201 are arranged along a first direction DR1 in a closed state and along a second direction DR2 in an open state. The plurality of car doors 201 includes a first car door 201A and a second car door 201B. The first car door 201A is the door among the plurality of car doors 201 located closest to the landing 300 in the second direction DR2, and is the door that moves the longest distance in the first direction DR1 between the closed and open states.

[0039] like Figure 2 As shown, in addition to the car door 201, the car 200 also has a first door knife 202A and a second door knife 202B, and a car sill 204. The first door knife 202A and the second door knife 202B are respectively installed on the car door 201 and reciprocate together with the car door 201 in the first direction DR1. The first door knife 202A and the second door knife 202B are respectively installed on the side of the car door 201 opposite to the landing door 301 (the side opposite to the side appearing inside the car 200). When the car 200 has multiple car doors 201, the first door knife 202A and the second door knife 202B are connected to the first car door 201A.

[0040] The first door cutter 202A and the second door cutter 202B extend along the vertical direction Z. The first door cutter 202A and the second door cutter 202B each have a protruding portion, for example, that protrudes upwards from the car door 201. The first door cutter 202A and the second door cutter 202B are respectively arranged to face each other at a distance from each other in the first direction DR1. For example, the first door cutter 202A and the second door cutter 202B are configured to sandwich the first roller 302A and the second roller 302B (described later) in the second direction DR2 when the car 200 is stopped at each floor's landing station 300.

[0041] The first door cutter 202A is positioned rearward of the second door cutter 202B in the direction of movement when the car door 201 is open. The second door cutter 202B is positioned rearward of the first door cutter 202A in the direction of movement when the car door 201 is closed.

[0042] like Figure 3 As shown, each floor's landing station 300 has, for example, multiple landing doors 301. The multiple landing doors 301 are arranged along a first direction DR1 in a closed state and along a second direction DR2 in an open state. The multiple landing doors 301 include a first landing door 301A and a second landing door 301B. The first landing door 301A is the door among the multiple landing doors 301 located closest to the car 200 in the second direction DR2, and it has the longest movement distance in the first direction DR1 between the closed and open states.

[0043] like Figure 3 As shown, each floor's landing station 300, in addition to the landing door 301, also has an interlocking device 302, a frame 303, and a landing sill 304. The frame 303 and the landing sill 304 are positioned at the landing station 300. The landing door 301 is opened and closed relative to the frame 303 and the landing sill 304.

[0044] The interlocking device 302 can switch between locking the landing door 301 and unlocking the landing door 301. The interlocking device 302 includes, for example, a first roller 302A, a second roller 302B, a rotating part 302C, a receiving part 302D, a first shaft part 302E, and a second shaft part 302F.

[0045] The first roller 302A is rotatably connected to the first shaft portion 302E mounted on the rotating part 302C. The second roller 302B is rotatably connected to the second shaft portion 302F mounted on the landing door 301. The first shaft portion 302E and the second shaft portion 302F extend along the second direction DR2, respectively.

[0046] Rotating part 302C is rotatably connected to second shaft part 302F. First roller 302A is rotatably connected to second shaft part 302F via first shaft part 302E and rotating part 302C. First roller 302A, second roller 302B, rotating part 302C, and first shaft part 302E are rotatable about the central axis of second shaft part 302F. Rotating part 302C has a latch. The latch is located at the end of rotating part 302C furthest from second shaft part 302F. Receiving part 302D can engage with the latch of rotating part 302C. By rotating rotating part 302C about second shaft part 302F, the state in which the latch engages with receiving part 302D and the interlocking device 302 locks the landing door 301 is switched to a state in which the latch does not engage with receiving part 302D and the interlocking device 302 unlocks the landing door 301 is switched to a state in which the latch does not engage with receiving part 302D and the interlocking device 302 unlocks the landing door 301.

[0047] The first roller 302A is positioned rearward of the second roller 302B in the direction of movement when the landing door 301 is open. The second roller 302B is positioned rearward of the first roller 302A in the direction of movement when the landing door 301 is closed.

[0048] Each floor 300 has a protrusion 306 that protrudes upward from the floor door 301. The protrusion 306 is movable integrally with the floor door 301 along the second direction DR2. The first roller 302A, the second roller 302B, and the rotating part 302C are connected to the floor door 301 via the protrusion 306.

[0049] When the terminal 300 has multiple terminal doors 301, the first roller 302A, the second roller 302B, and the rotating part 302C are connected to the first terminal door 301A via a protrusion 306 that protrudes upward from the first terminal door 301A.

[0050] A frame 303 and a landing sill 304 are provided at the boundary between the landing door 301 and the hoistway 101. The frame 303 is configured to surround the landing door 301 from three sides. The landing sill 304 is connected to the lower end of the frame 303. A sill groove is provided in the landing sill 304 to guide the reciprocating movement of the landing door 301 along the first direction DR1. The landing sill 304 is configured to connect to the car sill 204 in the second direction DR2 when the car 200 is stopped at the landing 300 on each floor.

[0051] like Figures 4-6As shown, with the car 200 stopped at the top landing 300H, the first door knife 202A and the second door knife 202B clamp the first roller 302A and the second roller 302B along the second direction DR2. When the first door knife 202A and the second door knife 202B reciprocate along the first direction DR1 together with the car door 201, they press at least one of the first roller 302A and the second roller 302B along the second direction DR2. Thus, the landing door 301 opens and closes by reciprocating along the first direction DR1 together with the first roller 302A and the second roller 302B. The landing door 301 is engaged with the car door 201 via the first door knife 202A and the second door knife 202B and the interlocking device 302. That is, the door engaging device 400 (see reference 400) engages the car door 201 with the landing door 301. Figure 5 It includes a first door knife 202A, a second door knife 202B, and an interlocking device 302.

[0052] like Figure 5 As shown, the first shaft portion 302E is positioned above the second shaft portion 302F.

[0053] like Figure 5 As shown, the car 200 also includes a crossbeam 205, a protrusion 206, a hanger roller 207, and a guide rail 208. The crossbeam 205 is positioned above the entrance / exit of the car compartment. The protrusion 206 protrudes upward beyond the car door 201. The protrusion 206 is configured to be spaced apart from the protrusion 306 in a second direction DR2. The hanger roller 207 is rotatably mounted on the protrusion 206. The guide rail 208 guides the hanger roller 207 along a first direction DR1. The guide rail 208 extends along the first direction DR1.

[0054] like Figure 5 As shown, the floor station 300 also includes: a hanger roller 307 rotatably mounted on the protrusion 306; and a guide rail 308 that guides the hanger roller 307 along a first direction DR1. The guide rail 308 extends along the first direction DR1.

[0055] The aforementioned protruding portions of the first door knife 202A and the second door knife 202B are disposed between protrusions 206 and 306 in the second direction DR2. The interlocking device 302 is disposed between protrusions 206 and 306 in the second direction DR2. The interlocking device 302 is disposed above the car door 201 and the landing door 301.

[0056] like Figure 6As shown, with the car door 201 closed, the first roller 302A is positioned closer to the second door knife 202A than the second door knife 202B in the second direction DR2. With the car door 201 closed, the first roller 302A is positioned with a gap D1 between it and the first door knife 202A in the second direction DR2. With the car door 201 closed, the second roller 302B is positioned closer to the second door knife 202B than the first door knife 202A in the second direction DR2. With the car door 201 closed, the second roller 302B is positioned with a gap D2 between it and the second door knife 202B in the second direction DR2. Gap D1 and gap D2 are the widths of the gaps measured by the gap measuring device of the elevator in this embodiment. When inspecting the door engaging device 400, the operator uses the gap measuring device of the elevator in this embodiment to measure gaps D1 and D2.

[0057] like Figure 7 and Figure 8 As shown, when the car door 201 begins to open, the first door knife 202A and the second door knife 202B move together with the car door 201 in the first direction DR1. After moving a gap D1 in the first direction DR1, the first door knife 202A contacts the first roller 302A, pressing the first roller 302A towards the second direction DR2. As a result, the rotating part 302C rotates around the central axis C of the second shaft part 302F, and the latch does not engage with the receiving part 302D, thus unlocking the landing door 301 using the interlocking device 302. In this unlocked state, the first roller 302A and the second roller 302B are further pressed towards the first direction DR1 by the first door knife 202A, thereby opening the landing door 301 together with the car door 201. When the car door 201 and the landing door 301 are closed, the opposite action occurs to the action when the car door 201 and the landing door 301 are open.

[0058] Next, the elevator clearance measuring device of this embodiment will be described.

[0059] Implementation method 1.

[0060] <Elevator Clearance Measurement Device>

[0061] like Figure 9 As shown, assuming that the gap measuring device 10 of the elevator in Embodiment 1 is arranged in the car 200 at a stopping position 300H above the uppermost floor (refer to...) Figure 4 Use it in the lower position.

[0062] Furthermore, the gap measuring device 10 can also be used when the car 200 is positioned below the stopping position of the landing station 300 on each floor other than the top floor.

[0063] exist Figure 9In the shown configuration, the upper surface 200A of the car 200 is positioned below the position P1 of the upper surface 200A of the car 200 at the stopping position of the uppermost landing 300H. This ensures sufficient space for the operator to work on the upper surface 200A of the car 200. On the other hand, in Figure 9 In the shown state, the first gate knife 202A and the second gate knife 202B are positioned in the vertical direction Z below the first roller 302A and the second roller 302B of the uppermost layer station 300H, and are not arranged with the first roller 302A and the second roller 302B in the first direction DR1. Figure 9 In the shown configuration, the gap measuring device 10 is positioned in the vertical direction Z between the first door knife 202A and the second door knife 202B and the first roller 302A and the second roller 302B. The gap measuring device 10 may be positioned, for example, on the upper surface 200A of the car 200. Alternatively, the gap measuring device 10 may be positioned, for example, on the upper surface or side of a crossbeam that forms part of the upper surface 200A of the car 200.

[0064] The gap measuring device 10 includes a light source 1. The light source 1 is configured to form two light rays extending along the first gate blade 202A and the second gate blade 202B, respectively, around the first roller 302A and the second roller 302B. The light source 1 is configured to form a first light ray LLA extending along the first gate blade 202A and a second light ray LLB extending along the second gate blade 202B around the first roller 302A and the second roller 302B. For example, the light source 1 forms the first light ray LLA and the second light ray LLB in a region adjacent to the first roller 302A and the second roller 302B in a first direction DR1. For example, the light source 1 forms the first light ray LLA and the second light ray LLB such that the first roller 302A and the second roller 302B are sandwiched in the first direction DR1. For example, the first light ray LLA is parallel to the second light ray LLB.

[0065] Light source 1, for example, has a first light source 1A that illuminates a first ray LLA and a second light source 1B that illuminates a second ray LLB. The first light source 1A and the second light source 1B are arranged spaced apart from each other in a first direction DR1. The first light source 1A and the second light source 1B have emission surfaces facing a direction perpendicular to a third direction DR3. The emission surfaces of the first light source 1A and the second light source 1B are, for example, inclined upwards with respect to the vertical direction.

[0066] Preferably, the first ray LLA and the second ray LLB are line beams extending in the vertical direction Z. In this specification, a line beam refers to a laser beam emitted from a light source 1 whose outline (the boundary line between this region and a surrounding region without a predetermined light intensity) is linear (elongated) and has a region having a predetermined light intensity relative to its center. The first ray LLA and the second ray LLB can, for example, be defined as a region having half the light intensity relative to its center. Furthermore, the first ray LLA and the second ray LLB can also be regions with a light intensity of 1 / e relative to their center. 2 The region with light intensity equal to (e: the base of the natural logarithm) times that of the light intensity.

[0067] Regarding the first ray LLA and the second ray LLB, as long as the aforementioned outlines (boundary lines) extend along the first gate blade 202A and the second gate blade 202B respectively, the width of the first direction DR1 is not particularly limited. For example, the width of the first direction DR1 of each of the first ray LLA and the second ray LLB is less than or equal to the width of the first direction DR1 of each of the first gate blade 202A and the second gate blade 202B. Preferably, the interval of the first direction DR1 between the first ray LLA and the second ray LLB is equal to the interval of the first direction DR1 between the first gate blade 202A and the second gate blade 202B.

[0068] In addition, the light source 1 may also have a light source and a split optical system that splits the light emitted from the light source into a first ray LLA and a second ray LLB and outputs them.

[0069] like Figure 9 As shown, the preferred gap measuring device 10 further includes a holding member 3. The holding member 3 holds the light source 1 in the car 200 such that a first ray LLA extends along the extension line of the first door cutter 202A and a second ray LLB extends along the extension line of the second door cutter 202B. The holding member 3 is fixed to the car 200 in a detachable manner. For example, the holding member 3 is fixed to the upper surface 200A of the car 200. For example, the holding member 3 is fixed to the upper surface or side of a crossbeam that forms part of the upper surface 200A of the car 200. For example, the holding member 3 uses at least one of magnetic force and friction as a holding force between the holding member 3 and the car 200. The holding member 3 has, for example, at least one of a magnet and a screw.

[0070] like Figure 10As shown, the first light source 1A and the second light source 1B are arranged spaced apart from each other in the first direction DR1. Preferably, the first light source 1A can form a first ray LLA extending to a position above the first shaft portion 302E. Preferably, the first light source 1A can form a first ray LLA extending along the surface of the first gate blade 202A opposite to the second gate blade 202B. Preferably, the second light source 1B can form a second ray LLB extending to a position above the second shaft portion 302F. Preferably, the second light source 1B can form a second ray LLB extending along the surface of the second gate blade 202B opposite to the first gate blade 202A.

[0071] like Figure 10 As shown, the retaining component 3 holds the light source 1 in the car 200 such that the first light ray LLA extends along the first door knife 202A and the second light ray LLB extends along the second door knife 202B.

[0072] Furthermore, the retaining member 3 need only be able to hold the light source 1 at any part of the car 200. The retaining member 3 can also be connected to the side of the crossbeam of the car 200. The retaining member 3 can also be connected to the upper surface or side of the car compartment of the car 200.

[0073] Preferably, the gap measuring device 10 is a device that the operator can carry.

[0074] <Elevator Gap Measurement Method>

[0075] Next, the elevator gap measurement method of Embodiment 1 will be described. The elevator gap measurement method is used to measure the gap between the first door knife 202A and the first roller 302A and the gap between the second door knife 202B and the second roller 302B when the first door knife 202A and the second door knife 202B are not engaged with the first roller 302A and the second roller 302B.

[0076] First, the first door cutter 202A and the second door cutter 202B are not engaged with the first roller 302A and the second roller 302B. This is achieved by positioning the elevator car 200 below the stopping positions of the floors 300 during elevator maintenance and repair. Figure 9 As shown, this state can be implemented, for example, in the topmost station 300H. Furthermore, this state can also be implemented in station 300 of each layer, including the bottom layer.

[0077] Second, prepare the elevator clearance measuring device 10. The elevator clearance measuring device 10 is prepared by the operator on the upper surface 200A of the car 200.

[0078] Third, such as Figure 9 and Figure 10As shown, in the aforementioned unengaged state, the elevator gap measuring device 10 forms a first ray LLA and a second ray LLB around the first roller 302A and the second roller 302B. The operator holds the gap measuring device 10 in the car 200 such that the first ray LLA extends along the first door blade 202A and the second ray LLB extends along the second door blade 202B.

[0079] Preferably, the first ray LLA is formed to extend along the surface of the first gate blade 202A opposite to the second gate blade 202B. Preferably, the second ray LLB is formed to extend along the surface of the second gate blade 202B opposite to the first gate blade 202A.

[0080] Fourth, the distance D3 between the first ray LLA and the first roller 302A in the first direction DR1 is measured. Similarly, the distance D4 between the second ray LLB and the second roller 302B in the first direction DR1 is measured. The operator can easily and accurately measure the distances D3 and D4 using instruments used in conventional gap measurement methods to measure the gap between two gate cutters and rollers, such as rulers and vernier calipers. The operator can estimate the gaps D1 and D2 based on the distances D3 and D4. When the first ray LLA is formed to extend along the surface of the first gate cutter 202A opposite to the second gate cutter 202B, the gap D1 is estimated to be equal to the distance D3. When the second ray LLB is formed to extend along the surface of the second gate cutter 202B opposite to the first gate cutter 202A, the gap D2 is estimated to be equal to the distance D4. That is, according to the gap measurement method of this embodiment, the gaps D1 and D2 can be easily and accurately measured as distances D3 and D4.

[0081] After the measurement is completed, the elevator clearance measuring device 10 is removed from the upper surface 200A of the car 200 by the operator.

[0082] <Specific example of an elevator clearance measuring device>

[0083] Next, refer to Figures 11-14 The specific structure of the gap measuring device 10 will be described below. Figures 11-14 As shown, the first light source 1A and the second light source 1B are arranged at intervals on the third direction DR3. The gap measuring device 10 can change the direction in which each emission surface of the first light source 1A and the second light source 1B faces. Hereinafter, the side in which each emission surface of the first light source 1A and the second light source 1B faces in the direction perpendicular to the third direction DR3 will be described as the front side, and the opposite side will be described as the rear side.

[0084] The retaining component 3 includes, for example, a first component 4, a second component 5, a connecting component 6, and a fixing component 7. The first component 4 is fixed to the car 200 in a detachable manner via the fixing component 7. A first light source 1A and a second light source 1B are mounted on the second component 5. The second component 5 is connected to the first component 4 via the connecting component 6 in a manner that allows it to rotate about a rotation axis C2 extending along a third direction DR3.

[0085] The first component 4 and the second component 5 switch by rotating one relative to the other about the rotation axis C2. Figures 11-13 The first state shown and Figure 14 The second state is shown. When the gap measuring device 10 is in use, the first component 4 and the second component 5 are in the second state.

[0086] exist Figures 11-13 In the first state shown, the first component 4 and the second component 5 are connected to each other, forming at least a portion of the housing that internally houses the light source 1. The housing formed in the first state has, for example, a shape with the third direction DR3 as the long side and the fourth direction DR4, which is perpendicular to the third direction DR3, as the short side.

[0087] The first component 4 and the second component 5 are configured, for example, to have a cuboid shape in the outer shape of the aforementioned housing. The first component 4, for example, has a bottom portion of the aforementioned housing and a set of inner surface portions extending upwards from the third portion of the bottom portion toward both ends of DR3. The second component 5, for example, has a top portion, a front surface portion, a rear surface portion of the aforementioned housing, and a set of outer surface portions extending downwards from the third portion of the top portion toward both ends of DR3. In the aforementioned first state, the set of outer surface portions of the second component 5 is configured to overlap with the set of inner surface portions of the first component 4 at a position further outwards than the set of inner surface portions. A through-hole is provided on the front surface portion of the second component 5 for the first light source 1A and the second light source 1B to pass through, respectively.

[0088] In the first state, the emission surfaces of the first light source 1A and the second light source 1B are, for example, aligned with the vertical direction. In the first state, the emission surfaces of the first light source 1A and the second light source 1B are, for example, oriented towards the horizontal direction.

[0089] exist Figure 14 In the second state shown, the first component 4 and the second component 5 hold the light source 1 in the car 200 such that the first ray LLA extends along the extension line of the first door knife 202A and the second ray LLB extends along the extension line of the second door knife 202B.

[0090] In the second state, the emission surfaces of the first light source 1A and the second light source 1B are, for example, tilted upwards relative to the vertical direction. In the second state, the emission surfaces of the first light source 1A and the second light source 1B are, for example, tilted upwards relative to the horizontal plane.

[0091] The connecting member 6 connects the first component 4 and the second component 5 in a rotatable manner. For example, the connecting member 6 connects the rear portions of the aforementioned set of inner surface surfaces of the first component 4 and the aforementioned set of outer surface surfaces of the second component 5. The connecting member 6 is capable of changing the angle of the second component 5 relative to the first component 4 and can hold the second component 5 at any angle relative to the first component 4. The retaining member 3, for example, has a plurality of connecting members 6 arranged at intervals along a rotation axis C2 extending along a third direction DR3. Each of the plurality of connecting members 6 has, for example, a screw that passes through, the aforementioned inner surface surface of the first component 4 and the aforementioned side surface surface of the second component 5.

[0092] The fixing member 7 secures the first member 4 to the car 200 in a detachable manner. The fixing member 7 may have at least one of a magnet and a screw. The retaining member 3 may have a plurality of fixing members 7. The plurality of fixing members 7 may be mounted, for example, on the central portion of the aforementioned bottom surface of the first member 4 in the third direction DR3. The plurality of fixing members 7 may be arranged spaced apart from each other, for example, on the fourth direction DR4. The plurality of fixing members 7 may be mounted, for example, on the front and rear portions of the aforementioned bottom surface of the first member 4 in the fourth direction DR4.

[0093] The gap measuring device 10 also includes a level 9 for detecting the inclination of the holding member 3 relative to a horizontal plane. The level 9 is mounted, for example, on the aforementioned bottom surface of the first member 4 and is configured to detect the inclination of the bottom surface relative to a horizontal plane. The level 9 is mounted, for example, on the central portion of the aforementioned bottom surface of the first member 4 in a third direction DR3. The level 9 is, for example, disposed, between a plurality of fixing members 7 in a fourth direction DR4. The level 9 is, for example, housed inside the aforementioned housing.

[0094] The retaining member 3 also has an adjustment portion 8 for adjusting the tilt of the retaining member 3. The adjustment portion 8 is mounted, for example, on the aforementioned bottom surface of the first member 4 and is configured to adjust the tilt of the bottom surface relative to the horizontal plane. The adjustment portion 8 is spaced apart from the fixing member 7 on the third direction DR3. The retaining member 3 has, for example, multiple adjustment portions 8. The multiple adjustment portions 8 are configured, for example, to clamp at least one fixing member 7 on the third direction DR3. The multiple adjustment portions 8 are respectively mounted, for example, on the outer side of the third direction DR3 and the front side of the fourth direction DR4 on the aforementioned bottom surface of the first member 4. The multiple adjustment portions 8 are each individually adjustable in length from the aforementioned bottom surface of the first member 4 protruding downwards. The multiple adjustment portions 8 have, for example, screws.

[0095] The gap measuring device 10 also includes a switch 11, a battery housing 12, and a battery 13. The switch 11 toggles the on / off state of the first light source 1A and the second light source 1B. The battery housing 12 is electrically connected to both the first light source 1A and the second light source 1B via the switch 11. The battery housing 12 houses the battery 13. The battery 13 is, for example, a primary or secondary battery. The switch 11 is mounted on the outer surface of the aforementioned front surface portion of the second component 5. The battery housing 12 and the battery 13 are housed inside the housing. The battery housing 12 is, for example, mounted on the inner surface of the aforementioned top portion of the second component 5.

[0096] The retaining component 3 has an outline parallel to the rotation axis C2. The first component 4 has outlines 41 and 42 parallel to the rotation axis C2. Outline 41 is the front edge of the aforementioned bottom surface of the first component 4. Outline 42 is the rear edge of the aforementioned bottom surface of the first component 4.

[0097] like Figure 15 As shown, in its operating state, the gap measuring device 10 is held in the elevator 100 with the third direction DR3 along the first direction DR1 and the emission surfaces of the first light source 1A and the second light source 1B tilted upward relative to the horizontal plane.

[0098] like Figure 15 As shown, when the gap measuring device 10 is in use, the outline 41 of the retaining component 3 is configured, for example, to overlap with the outline 200B of the upper surface 200A of the car 200 in the vertical direction Z.

[0099] like Figure 15 As shown, the light source 1 can also be configured to form a beam spot LLC with a lower light intensity than the first ray LLA around the first ray LLA. The light source 1 can also be configured to form a beam spot LLD with a lower light intensity than the second ray LLB around the second ray LLB.

[0100] <Effect of the gap measuring device>

[0101] Next, the effect of the gap measuring device 10 will be explained in comparison with conventional gap measuring methods that do not use the gap measuring device 10.

[0102] As described above, in conventional gap measurement methods without the gap measuring device 10, it is difficult to measure the gaps D1 and D2 at the top floor of the machine room-less elevator 100 with high accuracy. To measure the gaps D1 and D2 with high accuracy using conventional gap measurement methods, it is necessary to measure the gaps D1 and D2 while the operator is seated on the upper surface 200A of the car 200, with the first door cutter 202A and second door cutter 202B of the car 200 engaged with the first roller 302A and second roller 302B of the interlocking device 302 of each floor's landing 300. However, for the gaps D1 and D2 at the top floor of the machine room-less elevator 100, in order to ensure the operator's working space, the measurement must be performed without the first door cutter 202A and second door cutter 202B of the car 200 engaged with the first roller 302A and second roller 302B of the top floor's landing 300H. Therefore, in previous gap measurement methods, it is not possible to measure the gaps D1 and D2 at the top floor of the machine room-less elevator 100 with high precision.

[0103] In contrast, the gap measuring device 10 includes a light source 1 forming a first light ray LLA extending along the first gate blade 202A and a second light ray LLB extending along the second gate blade 202B around the first roller 302A and the second roller 302B. Such a gap measuring device 10... Figure 9 and Figure 10 As shown, when the first gate knife 202A and the second gate knife 202B are separated from the first roller 302A and the second roller 302B in the vertical direction Z and cannot be engaged with the first roller 302A and the second roller 302B, a first ray LLA and a second ray LLB are formed around the first roller 302A and the second roller 302B. The first ray LLA and the second ray LLB can serve as reference lines for measuring the gaps D1 and D2. Therefore, according to the gap measuring device 10, in the machine roomless elevator 100, the gaps D1 and D2 can also be easily and accurately measured as the distances D3 and D4.

[0104] As described above, the gap measuring device 10 can also be used when measuring the gaps D1 and D2 of the landings 300 on all floors except the top floor in the elevator car 200. In this case, the aforementioned effects of the gap measuring device 10 can also be achieved. Therefore, according to the gap measuring device 10, the efficiency of the inspection operation of the gaps D1 and D2 of the landings 300 on all floors of the elevator 100 can be improved.

[0105] Furthermore, the gap measuring device 10 can also be used in elevators equipped with machine rooms. In this case, the gaps D1 and D2 can be easily and accurately measured as distances D3 and D4 using the gap measuring device 10.

[0106] The gap measuring device 10 also includes a holding member 3 that holds the light source 1 in the car 200 in a detachable manner. With such a gap measuring device 10, the light source 1 can be easily positioned relative to the car 200 such that a first light ray LLA extends along the first door blade 202A and a second light ray LLB extends along the second door blade 202B.

[0107] In the gap measuring device 10, the holding member 3 has a first member 4 and a second member 5. The first member 4 and the second member 5 can switch between a first state and a second state. In the first state, the first member 4 and the second member 5 are connected to each other to form a housing that internally houses the light source 1. In the second state, the first member 4 and the second member 5 hold the light source 1 in the car 200 such that a first light ray LLA extends along the first door blade 202A and a second light ray LLB extends along the second door blade 202B. In this way, compared with the case where the gap measuring device 10 has a housing that is separate from the holding member 3, the simplicity of the gap measuring device 10 and the protection of the light source 1 can be balanced to a high degree.

[0108] Furthermore, the second component 5 is connected to the first component 4 in a manner that allows it to rotate about a rotation axis C2 extending along the third direction DR3. In this way, the simplicity and deployability of the gap measuring device 10 and the safety of the light source 1 can be balanced to a high degree.

[0109] The gap measuring device 10 also includes a level 9 for detecting the tilt of the holding member 3 relative to the horizontal plane. The holding member 3 also has an adjustment part 8 for adjusting the tilt of the holding member 3. In such a gap measuring device 10, compared with a gap measuring device that does not have an adjustment part 8 and a level 9, it is easier and more accurate to position the light source 1 in the car 200, thus improving the measurement accuracy.

[0110] Implementation method 2.

[0111] like Figure 16 and Figure 17 As shown, unless otherwise specified, the elevator gap measuring device 30 of Embodiment 2 has the same structure and function as the elevator gap measuring device 10 of Embodiment 1. Similarly, unless otherwise specified, the elevator gap measuring method of Embodiment 2 has the same structure and function as the elevator gap measuring method of Embodiment 1. Therefore, structures identical to those in Embodiment 1 are labeled with the same reference numerals and will not be described again.

[0112] <Structure of the elevator gap measuring device>

[0113] The gap measuring device 30 also includes a plumb bob component 20. The plumb bob component 20 has a linear portion 21, a first counterweight 22A, and a second counterweight 22B. The linear portion 21 connects the first counterweight 22A and the second counterweight 22B. The linear portion 21 is a linear or strip-shaped component. The first counterweight 22A is connected to one end of the linear portion 21. The second counterweight 22B is connected to the other end of the linear portion 21. The linear portion 21 has a first portion 21A extending between the end connected to the first counterweight 22A and the first roller 302A, and a second portion 21B extending between the other end connected to the second counterweight 22B and the second roller 302B.

[0114] The light source 1 of the gap measuring device 30 only needs to be able to form a first ray LLA and a second ray LLB around the first portion 21A and the second portion 21B of the linear portion 21 when the linear portion 21 is hung on the outer peripheral surfaces of the first roller 302A and the second roller 302B, respectively. The light source 1 only needs to be able to form the first ray LLA and the second ray LLB in the vertical direction Z at a position lower than the first roller 302A and the second roller 302B. For example, the light source 1 of the gap measuring device 30 can form the first ray LLA and the second ray LLB in the regions adjacent to the first portion 21A and the second portion 21B of the linear portion 21 in the first direction DR1.

[0115] In the gap measuring device 30, the angle (elevation angle) formed by the emission surfaces of the first light source 1A and the second light source 1B relative to the vertical direction can be set to be smaller than the angle (elevation angle) formed by the emission surfaces of the first light source 1A and the second light source 1B relative to the vertical direction in the gap measuring device 10. In the gap measuring device 30, the emission surfaces of the first light source 1A and the second light source 1B can also be along the vertical direction.

[0116] <Elevator Gap Measurement Method>

[0117] Next, the differences between the elevator clearance measurement method of Embodiment 2 and the elevator clearance measurement method of Embodiment 1 will be explained. In the elevator clearance measurement method of Embodiment 2, in the second step, an elevator clearance measurement device 30 is prepared.

[0118] In the third process, such as Figure 16 and Figure 17 As shown, in the aforementioned unengaged state, the linear portion 21 of the plumb bob component 20 is hung on the outer peripheral surfaces of the first roller 302A and the second roller 302B, respectively. Furthermore, the elevator gap measuring device 30 forms a first ray LLA and a second ray LLB around the linear portion 21.

[0119] In the fourth step, the distance D5 between the first ray LLA and the first portion 21A of the linear portion 21 in the first direction DR1 is measured. Similarly, the distance D6 between the second ray LLB and the second portion 21B of the linear portion 21 in the first direction DR1 is measured. The operator can easily and accurately measure the distances D5 and D6 using instruments used in conventional gap measurement methods to measure the gap between two gate cutters and rollers, such as rulers and vernier calipers. The operator can estimate the gaps D1 and D2 based on the distances D5 and D6.

[0120] After the measurement is completed, the elevator clearance measuring device 30, including the plumb bob component 20, is removed by the operator from the upper surface 200A of the car 200.

[0121] <Effect of the gap measuring device>

[0122] In the gap measuring device 30, when the linear portion 21 is hung on the outer peripheral surfaces of the first roller 302A and the second roller 302B, the light source 1 only needs to be able to form a first ray LLA and a second ray LLB around the first portion 21A and the second portion 21B of the linear portion 21. The light source 1 only needs to be able to form the first ray LLA and the second ray LLB in the vertical direction Z at a position lower than the first roller 302A and the second roller 302B. From a different perspective, in the gap measuring device 30, the angle (elevation angle) formed by the emission surface of the light source 1 relative to the vertical direction can be smaller than the angle of the gap measuring device 10.

[0123] The larger the angle (elevation angle) between the exit surface of light source 1 and the vertical direction, the more likely the outlines (boundaries of the line beams) of the first ray LLA and the second ray LLB will become significantly blurred as they face upwards, potentially reducing the accuracy of gap measurement. According to the gap measuring device 30, the angle (elevation angle) between the exit surface of light source 1 and the vertical direction can be minimized, thus suppressing the decrease in gap measurement accuracy.

[0124] <Modification of the gap measuring device>

[0125] Next, variations of the gap measuring device 10 of Embodiment 1 and the gap measuring device 30 of Embodiment 2 will be described.

[0126] like Figure 18As shown, the gap measuring devices 10 and 30 may also include at least one plate-shaped component 40. The plate-shaped component 40 has a connecting portion capable of connecting to the first door knife 202A and the second door knife 202B respectively, and a protruding portion that extends onto the upper surface 200A of the car 200 when the connecting portion is connected to either the first door knife 202A or the second door knife 202B. The connecting portion of the plate-shaped component 40 may, for example, contact the side of the first door knife 202A and the second door knife 202B in a first direction DR1. The connecting portion of the plate-shaped component 40 may also have a magnet. The connecting portion of the plate-shaped component 40 can be fixed to the first door knife 202A and the second door knife 202B respectively by the magnetic force of the magnet.

[0127] The gap measuring devices 10 and 30 may also include a plate-shaped component 40 connected to the first gate knife 202A and a plate-shaped component 40 connected to the second gate knife 202B.

[0128] The light source 1 can also form a first ray LLA and a second ray LLB around the protrusion of the plate-shaped member 40. In this case, the light source 1 can be positioned relative to the car 200 such that the first ray LLA extends along the protrusion of the plate-shaped member 40 connected to the first door knife 202A.

[0129] The retaining member 3 may also have at least one of a first engaging portion 3HA that engages with a protruding portion of the plate-shaped member 40 connected to the first door knife 202A, and a second engaging portion 3HB that engages with a protruding portion of the plate-shaped member 40 connected to the second door knife 202B. The first light source 1A may also be retained in the retaining member 3 such that, when the plate-shaped member 40 connected to the first door knife 202A engages with the first engaging portion 3HA, a first light ray LLA extends along the first door knife 202A. The second light source 1B may also be retained in the retaining member 3 such that, when the plate-shaped member 40 connected to the second door knife 202B engages with the second engaging portion 3HB, a second light ray LLB extends along the second door knife 202B.

[0130] In a first modified example of the gap measuring device 10, 30 equipped with plate-shaped component 40, the light source 1 can be easily positioned in the car 200 using the plate-shaped component 40.

[0131] like Figure 19As shown, in the gap measuring devices 10 and 30, the interval of the first direction DR1 between the first light ray LLA and the second light ray LLB can also be variable. The holding member 3 of the gap measuring devices 10 and 30 may, for example, have a guide member 14 that guides the movement of at least one of the first light source 1A and the second light source 1B along the first direction DR1. The guide member 14 is, for example, fixed to the holding member 3. The holding member 3 may also have a guide member (not shown) that guides the movement of the guide member 14 along the vertical direction Z.

[0132] like Figure 19 As shown, the gap measuring devices 10 and 30 can also be applied to... Figures 6-8 , Figure 10 Interlocking devices 302 and 312 are shown in the diagram. Figure 19 In the interlocking device 312 shown, the first roller 312A and the second roller 312B are arranged at intervals on the first direction DR1, and the first roller 312A and the second roller 312B can rotate about the central axis C1 of the third shaft portion 312G which is different from their respective rotation axes.

[0133] The interlocking device 312 includes a first roller 312A, a second roller 312B, a rotating part 312C, a receiving part 312D, a first shaft part 312E, a second shaft part 312F, and a third shaft part 312G.

[0134] The first roller 312A is rotatably connected to the first shaft portion 312E mounted on the rotating part 312C. The second roller 312B is rotatably connected to the second shaft portion 312F mounted on the rotating part 312C. The rotating part 302C is rotatably connected to the third shaft portion 302G mounted on the landing door 301. The first shaft portion 312E, the second shaft portion 312F, and the third shaft portion 312G extend along the second direction DR2.

[0135] The interlocking device 312 can switch between locking the landing door 301 and unlocking the landing door 301 by reciprocating the first door knife 202A and the second door knife 202B, which are arranged between the first roller 312A and the second roller 312B on the first direction DR1.

[0136] Regarding the second modified example of the gap measuring device 10, 30 with guide 14 for retaining component 3, it can be applied to Figures 6-8 , Figure 10 The interlocking device 302 shown can also be applied to Figure 19 The interlocking device 312 shown.

[0137] In addition, the gap measuring devices 10 and 30 can also be configured to be used only for... Figure 19 The interlocking device 312 shown.

[0138] In the above-described embodiments and variations, the combinable structures can also be combined with each other.

[0139] Embodiments of the present invention have been described, but should be considered illustrative rather than restrictive in all respects. The scope of the invention is defined by the claims and is intended to include all modifications equivalent to and within the scope of the claims.

Claims

1. A gap measuring device of an elevator for measuring a gap between two door blades provided in a door of a car of the elevator and extending in an up-and-down direction and a roller provided in a door of a landing in a state where the two door blades and the roller are not engaged with each other in a first direction perpendicular to the up-and-down direction, wherein the gap measuring device of the elevator is provided with a light source capable of forming two light rays extending along the two door blades, respectively, around the roller.

2. The gap measuring device of the elevator according to claim 1, wherein the gap measuring device of the elevator is further provided with a holding member holding the light source to the car in a detachable manner.

3. The gap measuring device of the elevator according to claim 2, wherein the holding member has a first member and a second member, the first member is fixed to the car in a detachable manner, the light source is fixed to the second member, and the first member and the second member are capable of switching between a first state in which the first member and the second member constitute a housing in which the light source is accommodated and a second state in which the first member and the second member hold the light source to the car in a manner that the two light rays extend on extension lines of the two door blades, respectively.

4. The gap measuring device of the elevator according to claim 3, wherein the light source forms the two light rays at intervals from each other in the first direction, and the second member is connected to the first member in a manner that it is rotatable about a rotation axis extending in the first direction.

5. The gap measuring device of the elevator according to claim 4, wherein the holding member has an outer shape line parallel to the rotation axis.

6. The gap measuring device of the elevator according to any one of claims 2 to 5, wherein the gap measuring device of the elevator is further provided with a level detecting an inclination of the holding member with respect to a horizontal plane, and the holding member further has an adjustment portion adjusting a degree of the inclination of the holding member.

7. The gap measuring device of the elevator according to any one of claims 2 to 5, wherein an interval of the two light rays is changeable.

8. The gap measuring device of the elevator according to any one of claims 2 to 5, wherein the gap measuring device of the elevator is further provided with a plumb member, the plumb member has a first weight, a second weight, and a wire portion connecting the first weight and the second weight, and the light source is capable of forming the two light rays around the wire portion when the wire portion is hung on an outer peripheral surface of the roller. A gap measuring method of an elevator includes the following steps: a step of achieving a state where two door blades and a roller are not engaged with each other; a step of preparing a gap measuring device of an elevator provided with a light source capable of forming two light rays extending along the two door blades, respectively, around the roller; a step of forming the two light rays extending along the two door blades, respectively, around the roller by the gap measuring device of the elevator in the state where the two door blades and the roller are not engaged with each other; and a step of measuring an interval between the two light rays and the roller. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 9. A gap measuring method of an elevator for measuring a gap between two door blades provided at a car door of the elevator and extending in an up-down direction and a roller provided at a landing door in a state where the two door blades and the roller are not engaged with each other in a first direction perpendicular to the up-down direction, wherein ​ ​ ​ ​ ​

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