Elevator guide rail sliding device

Abstract

To provide an elevator guide rail sliding device that can effectively reduce processing time. [Solution] The lapping device stops at a position where a step is present or may occur on the surface of the guide portion 211 of the guide rail 2, and performs lapping of the surface of the guide portion 211 within a predetermined range. This lapping device comprises i) a device base 4 that can move on the guide rail 2, ii) a movable base 5 that can move up and down within a predetermined range on the device base 4, and iii) a lapping unit 6 mounted on the movable base 5 and equipped with a rotating grinding wheel 613 that can move in and out of contact with the surface of the guide portion 211, and in the operating mode, the lapping unit 6 rotates the rotating grinding wheel 613 and brings it into contact with the surface of the guide portion 211, thereby polishing and lapping the surface of the guide portion 211 in conjunction with the upward, downward, or vertical movement of the movable base 5.

Description

Technical Field

[0001] The present invention relates to a lapping device for lapping an elevator guide rail.

Background Art

[0002] In a factory, the guide rail is cut to an appropriate length, then shipped and carried into the installation site. At the installation site, it is connected in a row from the bottom (pit) to the top in the hoistway and attached to the wall surface of the hoistway. At this time, a process (lapping process) for eliminating a step when a step occurs on the surface of the guide rail over the entire length of the guide rail is required. This is because when the surface state of the guide rail is poor, it causes unfavorable events for the operation of the elevator, such as the poor riding comfort of the car, vibration, and abnormal noise.

[0003] Normally, the lapping process is performed by an operator. However, manually lapping two pairs (four rows) of guide rails (one pair (two rows) of guide rails for the car and one pair (two rows) of guide rails for the counterweight) over the entire length of the guide rail is extremely laborious and time-consuming.

[0004] Therefore, lapping devices described in Patent Documents 1 and 2 have been proposed.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, the lapping devices described in Patent Documents 1 and 2 perform grinding along the entire length of each row of guide rails. In this case, the amount of grinding inevitably increases, and in order to obtain sufficient lapping accuracy, it is necessary to make the lapping device move back and forth many times or to slow down the movement speed of the lapping device, so the effect of reducing processing time is not significant.

[0007] Therefore, the present invention has been made in view of these circumstances, and aims to provide an elevator guide rail sliding device that can effectively reduce processing time. [Means for solving the problem]

[0008] The elevator guide rail sliding device according to the present invention is An elevator guide rail sliding device that stops at a position where a step exists or is likely to occur on the surface of the guide portion of a guide rail extending vertically within a hoistway, and slides the surface of the guide portion within a predetermined range, A device base configured to be movable along a guide rail, The drive unit of the device base, A movable base configured to move up and down within a predetermined range on the device base, The drive unit of the movable base, A sliding part is provided, which is mounted on a movable base and has a rotating grinding wheel that can move in and out of contact with the surface of the guide part, and in the operating mode, the rotating grinding wheel is rotated and brought into contact with the surface of the guide part, thereby polishing and lapping the surface of the guide part in accordance with the upward, downward, or vertical movement of the movable base, It includes a control unit that controls the operation and non-operation of each drive unit and sliding part. This is a guide rail sliding device for elevators.

[0009] As one embodiment of the elevator guide rail sliding device according to the present invention, The sliding section comprises a first guide surface polishing unit equipped with a rotating grinding wheel corresponding to the first guide surface of two of the guide surfaces on the surface of the guide section, and a second guide surface polishing unit equipped with a rotating grinding wheel corresponding to the second guide surface. The control unit independently or synchronously controls the operation and non-operation of the first guide surface polishing unit and the second guide surface polishing unit. This configuration can be adopted.

[0010] As one embodiment of the elevator guide rail sliding device according to the present invention, The sliding section further includes a tip surface polishing unit equipped with a rotating grinding wheel corresponding to the tip surface of the guide section's surface, The control unit independently or synchronously controls the operation and non-operation of the first guide surface polishing unit, the second guide surface polishing unit, and the tip surface polishing unit. This configuration can be adopted.

[0011] As one embodiment of the elevator guide rail sliding device according to the present invention, The control unit controls each drive unit so that the rotating grinding wheel stops at a position where a step has occurred or where a step could occur, when the movable base is positioned in the middle of its vertical movement range. This configuration can be adopted.

[0012] As one embodiment of the elevator guide rail sliding device according to the present invention, The rotating grinding wheel has a grinding surface on an end face perpendicular to the axis of rotation, and the surface of the guide section is polished with the grinding surface on the end face. This configuration can be adopted.

[0013] As one embodiment of the elevator guide rail sliding device according to the present invention, The device base is equipped with a lifting machine that suspends and supports the device base as the drive unit. The control unit controls the raising and lowering of the lifting machine. This configuration can be adopted. [Effects of the Invention]

[0014] According to the present invention, it stops at a position where a step has occurred or may occur on the surface of the guide portion of the guide rail, and performs sliding contact on the surface of the guide portion within a predetermined range. Therefore, according to the present invention, the processing time can be effectively reduced as compared with the case where sliding contact is performed over the entire length of the guide rail.

Brief Description of the Drawings

[0015] [Figure 1] FIG. 1 is a perspective view of a guide rail. [Figure 2] FIG. 2(a) is a longitudinal sectional view within a hoistway. FIG. 2(b) is a longitudinal sectional view within a hoistway in a state where a guide rail sliding contact device is set. [Figure 3] FIG. 3 is a perspective view of the main device of a guide rail sliding contact device as viewed obliquely from the rear. [Figure 4] FIG. 4 is a plan view of the guide portion of the main device. [Figure 5] FIG. 5 is a side view of the guide portion. [Figure 6] FIG. 6 is a side view of the main device. [Figure 7] FIG. 7(a) is a perspective view of the movable base of the main device and the sliding contact portion mounted on the movable base as viewed obliquely from the front. FIG. 7(b) is a plan view of the main configuration of the sliding contact portion. [Figure 8] FIG. 8(a) is a perspective view of the sliding contact portion in an operating mode. FIG. 8(b) is a perspective view of the sliding contact portion in a non-operating mode. [Figure 9] FIG. 9(a) is a perspective view of the step detection portion mounted on the movable base. FIG. 9(b) is a plan view of the main configuration of the step detection portion. [Figure 10] FIG. 10 is a block diagram of the control portion of a guide rail sliding contact device (main device and hoisting machine (sub-device)). [Figure 11] FIG. 11(a) is a front view of the operation panel of the main device. FIG. 11(b) is a front view of a remote controller. [Figure 12]Figures 12(a) and (b) are explanatory diagrams regarding stroke control of the rotating grinding wheel. Figure 12(c) is an explanatory diagram regarding contact pressure control of the rotating grinding wheel. [Figure 13] Figure 13 is a side view of the main unit of a guide rail sliding device according to another embodiment. [Figure 14] Figures 14(a) and (b) are explanatory diagrams of a rotary grinding wheel according to another embodiment. [Figure 15] Figure 15 is an explanatory diagram of another method of using the guide rail sliding device. [Modes for carrying out the invention]

[0016] <Elevator and guide rail configuration> The following describes the elevator guide rail sliding mechanism, but first, we will explain the configuration of the elevator and guide rails.

[0017] As shown in Figures 1 and 2(a), the elevator comprises a hoistway 1, a car, and a car drive mechanism. The hoistway 1 extends vertically within a building with multiple floors. A pair (two rows) of guide rails 2, 2 are attached to two opposing walls 1a, 1a of the hoistway 1, extending vertically. The car moves up and down within the hoistway 1, guided by the guide rails 2, as guide bodies attached to four locations (top, bottom, left, and right) slide along the guide rails 2. The car drive mechanism controls the movement of the car and stops it at the designated floor.

[0018] The guide rail 2 has a T-shape in plan view and comprises a base portion 20 and a projection portion 21. The base portion 20 is a strip-shaped plate extending in the vertical direction and is arranged parallel to the wall surface 1a of the elevator shaft 1 at a predetermined distance. The projection portion 21 is a strip-shaped plate extending in the vertical direction, is connected to the central part of the base portion 20 at one side, and protrudes perpendicularly from the base portion 20.

[0019] The projection 21 comprises a connecting portion 210 and a guide portion 211. The connecting portion 210 connects the base portion 20 and the guide portion 211. The connecting portion 210 is narrower than the guide portion 211 and forms a constriction in the projection 21. The guide portion 211 slides against the guide body of the cage and guides the guide body to move linearly in the vertical direction. The guide portion 211 comprises two guide surfaces 211a, 211a (first guide surface 211a and second guide surface 211a) and a tip surface 211b. The two guide surfaces 211a, 211a are surfaces located in the thickness direction of the guide portion 211 and are parallel or tapered, with the tip side being narrower. The tip surface 211b is a surface located between the tip edges of the two guide surfaces 211a, 211a and is a flat surface or a curved surface such as an arc surface.

[0020] The guide rail 2 has an appropriate length and is extended vertically by connecting the ends of two guide rails 2, 2. One end of the guide rail 2 has a protrusion 22 on its end face, and the other end of the guide rail 2 has a groove 23 on its end face. The protrusion 22 and groove 23 are formed along the front-rear direction and extend between the front end surface 211b and the back surface of the base 20. The ends of the upper and lower guide rails 2, 2 are connected without shifting in the left-right direction by the interlocking of the protrusion 22 and groove 23.

[0021] The upper and lower guide rails 2,2 are connected at both ends using a connecting material 25 such as a cover plate. The connecting material 25 is plate-shaped and is placed against the back of both ends (bases 20) of the upper and lower guide rails 2,2, and is positioned across both ends. Multiple screw holes or through holes are formed in the upper and lower halves of the connecting material 25, and through holes are formed at the ends of the guide rails 2 corresponding to these holes. The connecting material 25 is connected to the ends of the guide rails 2 using a fastener 250.

[0022] The guide rail 2 is fixed to the wall surface 1a of the elevator shaft 1 at appropriate points along its length using guide rail support members 27. The guide rail support member 27 comprises a wall bracket 270, a rail bracket 271, and a rail clip 272. The wall bracket 270 is fixed to the wall surface 1a of the elevator shaft 1 using fasteners. Alternatively, the wall bracket 270 is fixed to a beam or frame provided along the wall surface 1a of the elevator shaft 1 using fasteners and / or welding. The rail bracket 271 is positioned relative to the wall bracket 270 and then fixed to the wall bracket 270 using fasteners and welding. The rail clip 272 is fixed to the vertical surface of the rail bracket 271 using fasteners 273 at two points on the left and right of the base 20 of the guide rail 2, while in contact with the outer surface of the base 20.

[0023] <Guide rail installation procedure> Guide rail 2 is installed during elevator installation work in the following procedure. Note that wall bracket 270 is attached and fixed to the wall surface 1a of the hoistway 1 in advance, prior to or during the elevator installation work.

[0024] (Installation process for the first guide rail) At the lowest point (pit) of the elevator shaft 1, the worker adjusts the horizontal position of the rail bracket 271, which is fixed to the first guide rail 2, relative to the corresponding wall bracket 270, thereby aligning it with the first guide rail 2. After the alignment is complete, the rail bracket 271 is fixed to the wall bracket 270 (final fixing).

[0025] (Connection process) The worker uses a lifting machine to suspend the second guide rail 2, places it on top of the first guide rail 2, and connects both ends of the two guide rails 2, 2.

[0026] (Installation process for the second guide rail) The worker temporarily fixes the rail bracket 271, which will be fixed to the second guide rail 2, to the corresponding wall bracket 270.

[0027] (Connection process) The worker uses a lifting machine to suspend the third guide rail 2, places it on top of the second guide rail 2, and connects both ends of the two guide rails 2, 2.

[0028] The workers repeat these steps to connect the guide rails 2 sequentially upwards, installing them all the way to the top of the elevator shaft 1.

[0029] (Centering and final fixing process for the second and subsequent guide rails) At this point, the second and subsequent guide rails 2 have not yet been aligned, and the rail brackets 271 that will be fixed to the second and subsequent guide rails 2 are not yet permanently fixed to the wall brackets 270. Therefore, the worker or the guide rail alignment device will perform these tasks.

[0030] (Rubbing process) Guide rail 2 contains some manufacturing errors in dimensions such as the width of the guide portion 211 in the left-right direction and the length of the protruding portion 21. As a result, the surfaces of the two guide portions 211, 211 may not be flush at the connecting portion at both ends of the upper and lower guide rails 2, 2, resulting in a step. Even if the step is small, it can cause vibration and abnormal noise when the elevator car's guide body passes over the step during elevator operation. Therefore, the guide rail sliding device performs a sliding process to eliminate the step on the surface of the guide portion 211 and finish the surface of the guide portion 211 to a smooth surface prior to elevator operation.

[0031] <Configuration of the guide rail sliding device> As shown in Figure 2(b), the guide rail sliding device (hereinafter abbreviated as "sliding device") 3 is composed of a main device 3A and a lifting machine 3B as a secondary device.

[0032] The main unit 3A is configured to grip the guide rail 2 and move along the guide rail 2. The main unit 3A is suspended and supported by the lifting machine 3B, and moves upward (up) as the lifting machine 3B winds up the wire, and moves downward (down) as the lifting machine 3B winds down the wire. The main unit 3A is equipped with various functional parts, which will be described later.

[0033] The lifting device 3B is installed in the upper part of the elevator shaft 1 (preferably, at the very top of the elevator shaft 1). The lifting device 3B is either an electric or manual lifting device, and commercially available products are used. Electric lifting devices include hoists, winches, cranes, and chain blocks. Manual lifting devices include chain blocks, lever blocks (registered trademark), and Tirfors. The lifting device 3B is not limited to either type, and any appropriate type can be used.

[0034] Furthermore, an upper limit switch cam 10 is installed at a predetermined location in the upper part of the elevator shaft 1 (preferably, at the very top of the elevator shaft 1, near the upper end of the uppermost guide rail 2), and a lower limit switch cam 11 is installed at a predetermined location in the lower part of the elevator shaft 1 (preferably, at the very bottom of the elevator shaft 1, near the lower end of the lowest guide rail 2). The cams 10 and 11 are fixed to fixed parts such as the guide rails 2, beams, frames, or brackets in the elevator shaft 1 using fixing devices. The cams 10 and 11 are installed on the movement path of the limit switch 410 provided by the main unit 3A, and are installed to activate the limit switch 410.

[0035] As shown in Figure 3, the main unit 3A comprises a device base 4 and a movable base 5. The device base 4 is configured to move along the guide rail 2 while gripping it. The device base 4 comprises a housing 40, a height position detection unit 41, and a guide unit (guide body) 42.

[0036] In Figure 3, "front" and "rear" refer to directions perpendicular to the longitudinal direction of the guide rail 2 and perpendicular to the wall surface 1a of the elevator shaft 1; "left" and "right" refer to directions perpendicular to the longitudinal direction of the guide rail 2 and parallel to the wall surface 1a of the elevator shaft 1; and "up" and "down" refer to the longitudinal direction of the guide rail 2, i.e., the vertical direction. The same applies to the other figures.

[0037] The enclosure 40 comprises a vertical plate 400, a reinforcing member 401, an upper plate 402, and a lower plate 404. The vertical plate 400 is a metal plate that is vertically elongated in the vertical direction, has a predetermined width in the left-right direction, and is sufficiently rigid. The reinforcing member 401 is a strip-shaped metal plate that is vertically elongated in the vertical direction, has a predetermined width in the front-back direction, and is sufficiently rigid. The reinforcing member 401 is fixed to the vertical plate 400 by fasteners and / or welding, in contact perpendicularly with the left and right sides of the vertical plate 400. The reinforcing member 401 has the function of reinforcing the vertical plate 400 so that it does not flex in the front-back direction. The vertical plate 400 and the two reinforcing members 401, 401 have weight-reducing holes in multiple locations, to the extent that they do not affect the strength. The upper plate 402 is a metal plate that is attached to the top of the vertical plate 400 and the two reinforcing members 401, 401, positioned along the horizontal plane, and has sufficient rigidity. The lower plate 404 is a metal plate that is attached to the bottom of the vertical plate 400 and the two reinforcing members 401, 401, positioned along the horizontal plane, and has sufficient rigidity.

[0038] An eyebolt or the like is attached to the upper surface of the upper plate 402. A hook 32B, attached to the end of a wire, chain, rope, or other wire material 31B hanging down from the main body of the lifting machine 3B, engages with the engagement part 403 and suspends and supports the device base 4.

[0039] The height position detection unit 41 includes a limit switch 410. The limit switch 410 is attached to the vertical plate 400 either directly or indirectly via a bracket or the like. The actuator portion of the limit switch 410 protrudes laterally and can move toward and away from the cams 10 and 11.

[0040] The guide section 42 is attached to the upper surface of the upper plate 402 and the lower surface of the lower plate 404, respectively. The upper and lower guide sections 42, 42 have the same structure.

[0041] As shown in Figures 4 and 5, the guide portion 42 is a roller guide comprising three rollers 423, 423, and 427 that contact three surfaces of the guide rail 2: two guide surfaces 211a, 211a and a tip surface 211b. Each of the two rollers (or drums) 423, 423 abuts against the guide surface 211a and has a flange portion 423a at its tip that engages with the constricted portion 210 of the guide rail 2. Roller 427 abuts against the tip surface 211b. As a result, the guide portion 42 grips the guide rail 2 (or its guide portion 211) without falling off the guide rail 2 (or its guide portion 211).

[0042] The guide section 42 comprises a base 420, two shafts 421, 421, and two oscillating bodies 422, 422. The base 420 is fixed to the upper plate 402 or the lower plate 404 using fasteners. The two shafts 421, 421 are arranged so that their respective axes are aligned along the front-rear direction and are parallel with a gap between them in the left-right direction. Each shaft 421 is supported by the base 420 so that it can rotate about the front-rear direction and slide in the front-rear direction. Each oscillating body 422 is integrated with each shaft 421 and oscillates about the front-rear direction as each shaft 421 rotates. Each roller 423 is supported by each oscillating body 422 so that it can rotate about the front-rear direction.

[0043] The guide section 42 includes elastic force-applying sections 424 and 425. The elastic force-applying section 424 applies elastic force to the shaft 421 in a backward direction. As a result, the roller 423 (flange section 423a) and roller 427 clamp the guide section 211 of the guide rail 2 in the front-rear direction. The elastic force-applying section 425 applies elastic force to the two oscillating bodies 422 and 422 in a direction that narrows the distance between them. As a result, the two rollers 423 and 423 clamp the guide section 211 in the left-right direction. The elastic force and the resulting clamping force (clamping force in the front-rear direction and clamping force in the left-right direction) can be adjusted by adjusting the degree of compression of the elastic body by (rotating) adjustment sections 424a and 425a, such as a double nut configuration.

[0044] The guide section 42 includes a spacer block 426 (shown as a halftone dot in Figure 4). The spacer block 426 contacts the opposing surfaces of the two oscillating bodies 422, 422, thereby restricting further oscillation of the two oscillating bodies 422, 422, eliminating the torsional moment of the oscillating body 422 caused by the reaction force received by the two rollers 423, 423 from the guide section 211 of the guide rail 2, and reducing the cantilevered uneven load. The spacer block 426 has a tapered shape that narrows in width towards the front and is mounted on the base 420 so that it can slide in the front-rear direction. This is to accommodate the difference in the spacing between the two rollers 423, 423 when they are in contact with the guide section 211, due to the difference in the size of the guide rail 2 (difference in the width of the guide section 211 in the left-right direction).

[0045] As shown in Figure 6, the movable base 5 (hatched portion sloping upwards to the right) is equipped with a sliding portion 6 (hatched portion sloping downwards to the right), which will be described later as a functional part, and is configured to move up and down within a predetermined range on the device base 4. The movement mechanism of the movable base 5 is configured on the device base 4 side as a guide body 43 and on the movable base 5 side as a slide body 51. For example, the guide body 43 is a guide rail, and the slide body 51 is a carriage that slidably engages with the guide rail, and the guide body 43 and slide body 51 are in the form of linear guides. Two guide bodies 43 are used and are attached to the vertical plate 400 with their centerlines aligned in the vertical direction and spaced apart in the left-right direction. The guide bodies 43 are attached to the front of the left and right sides of the vertical plate 400. Alternatively, the guide bodies 43 are attached to the rear surface of the vertical plate 400.

[0046] The vertical movement of the movable base 5 is performed by a drive unit 44. For example, the drive unit 44 comprises a motor 440, a ball screw 441, a bearing 442, and a nut 443. The motor 440 is mounted on the vertical plate 400. The motor 440 is positioned so that its drive shaft is aligned in the vertical direction and is mounted on the lower rear surface of the vertical plate 400. Alternatively, the motor 440 is mounted on the upper rear surface of the vertical plate 400. Alternatively, the motor 440 is mounted on the front surface of the vertical plate 400. The ball screw 441 is positioned so that its centerline is aligned in the vertical direction, with one end connected to the drive shaft of the motor 440 via a coupling, and the other end rotatably supported by a bearing 442. The bearing 442 is mounted on the upper plate 402. When the motor 440 is mounted on the upper part of the vertical plate 400, the bearing 442 is mounted on the lower plate 404. The nut 443 is attached to the movable base 5 and screws into the ball screw 441. Thus, the ball screw 441 and the nut 443 are mechanical elements that convert the rotational motion of the drive shaft of the motor 440 into linear motion. When the ball screw 441 rotates in one direction, the nut 443 moves upward, and the movable base 5 moves upward. When the ball screw 441 rotates in the opposite direction, the nut 443 moves downward, and the movable base 5 moves downward.

[0047] The movable base 5 is equipped with a limit switch cam 52. The cam 52 is installed on the movement path of the limit switches (hereinafter abbreviated as "LS") 450-452 provided on the device base 4, and is installed to operate the LS 450-452. The device base 4 is equipped with the LS 450-452 as a height position detection unit 45. The LS 450-452 are attached to the vertical plate 400. As an example, the LS 450-452 are attached to the rear surface of the side of the vertical plate 400. The actuator portion of the LS 450-452 protrudes rearward and can move toward and away from the cam 52 (the cam surface (inclined surface + parallel surface + inclined surface)).

[0048] LS450 is positioned at a height that defines the midpoint of the vertical movement range of the movable base 5. LS451 is positioned at a height that defines the upper limit of the vertical movement range of the movable base 5. LS452 is positioned at a height that defines the lower limit of the vertical movement range of the movable base 5. The distance between LS450 and LS451, and the distance between LS450 and LS452 are set to the same length. Note that LS450 to LS452 are mounted so as to be vertically adjustable.

[0049] Thus, the vertical movement range of the movable base 5 is defined by LS451 and 452, and the sequence is such that the movable base 5 cannot move beyond this range. However, a stopper 46 is provided as a precaution. The upper stopper 46 is attached to the lower surface of the upper plate 402, and the lower stopper 46 is attached to the upper surface of the motor 440 of the drive unit 44.

[0050] A mounting plate 53 is attached to the movable base 5 via an arm extending to the rear. The mounting plate 53 is a metal plate that is vertically elongated in the vertical direction, has a predetermined width in the horizontal direction, and is sufficiently rigid. A box 54 and a base frame 55 are attached to the outer surface of the mounting plate 53. The box 54 is for housing the control unit and power supply (battery). The base frame 55 is for mounting the air compressor 60. These components (sparsely hatched area rising to the right) move vertically together with the movable base 5 (densely hatched area rising to the right).

[0051] As shown in Figure 7(a), the movable base 5 comprises a housing 50. The housing 50 comprises an upper plate 500, a lower plate 501, and a connecting member 502. The upper plate 500 and the lower plate 501 are metal plates that are arranged along a horizontal plane and have sufficient rigidity. The upper plate 500 and the lower plate 501 are arranged parallel to each other with a gap in the vertical direction. The connecting member 502 is a strip-shaped metal plate that has a vertically elongated rectangular shape in the vertical direction, a predetermined width in the front-to-back direction, and has sufficient rigidity. One connecting member 502 connects the right sides of the upper plate 500 and the lower plate 501, and the other connecting member 502 connects the left sides of the upper plate 500 and the lower plate 501. As a result, the housing 50 forms a rectangular frame shape when viewed from the front-to-back direction. Furthermore, the upper plate 500, the lower plate 501, and the two connecting members 502, 502 have weight-reducing holes in multiple locations, to the extent that they do not affect the strength.

[0052] The sliding joint 6, which is a functional part of the main unit 3A, is mounted on the movable base 5. The movable base 5 is positioned within the frame space of the housing 50. The sliding joint 6 is equipped with rotating grinding wheels 613, 613, 633 that can move toward and away from the surface of the guide portion 211 of the guide rail 2. In the operating mode, the sliding joint 6 rotates the grinding wheels 613, 613, 633 and brings them into contact with the surface of the guide portion 211, thereby polishing and sliding the surface of the guide portion 211 in conjunction with the upward, downward, or vertical movement of the movable base 5.

[0053] The sliding joint 6 comprises three polishing units 61, 61, and 63, and three drive units 62, 62, and 64. Two of the polishing units (guide surface polishing units) 61, 61 consist of a right guide surface polishing unit (first guide surface polishing unit) 61A and a left guide surface polishing unit (second guide surface polishing unit) 61B, which polish the guide surface 211a of the guide section 211, respectively. The other polishing unit (tip surface polishing unit) 63 polishes the tip surface 211b of the guide section 211. The guide surface polishing units 61 are supported by drive unit 62, and the tip surface polishing units 63 are supported by drive unit 64. The drive units 62 and 64 are attached to the movable base 5. As an example, drive unit 62 is attached to the upper plate 500 of the housing 50, and drive unit 64 is attached to the lower plate 501 of the housing 50.

[0054] As shown in Figure 7(b), the rotating grinding wheel 613 of the right guide surface polishing unit 61A makes contact with one guide surface 211a at the end face grinding surface so as to be able to move toward and toward it. The rotating grinding wheel 613 of the left guide surface polishing unit 61B makes contact with the other guide surface 211a at the end face grinding surface so as to be able to move toward and toward it. The rotating grinding wheel 633 of the tip surface polishing unit 63 makes contact with the tip surface 211b at the end face so as to be able to move toward and toward it.

[0055] As shown in Figure 8, the guide surface polishing unit 61 comprises a base 610, a motor 611, a grinding wheel holder 612, a rotating grinding wheel 613, and a belt 614.

[0056] The base 610 is a strip-shaped metal plate that is horizontally elongated in the front-to-back direction, has a predetermined width in the vertical direction, and is sufficiently rigid. The motor 611 is positioned so that its drive shaft is aligned along the left-to-right direction and is attached to the base end of the base 610. The grinding wheel holder 612 is attached to the front end of the base 610 so that it can rotate about the left-to-right direction. The grinding wheel holder 612 has an end face perpendicular to the axis of rotation. The belt 614 is wound around a pulley attached to the drive shaft of the motor 611 and a pulley attached coaxially to the grinding wheel holder 612.

[0057] The rotating grinding wheel 613 has a disc or cylindrical shape and is detachably attached to the end face of the grinding wheel holder 612. The rotating grinding wheel 613 has a circumferential surface around the rotation axis of the grinding wheel holder 612 and an end face perpendicular to the rotation axis of the grinding wheel holder 612. The circumferential surface and the end face have abrasive grains and constitute the grinding wheel surface. The end face is annular or circular. The rotating grinding wheel 613 rotates on a vertical plane parallel to the guide surface 211a of the guide rail 2 as the grinding wheel holder 612 rotates.

[0058] The drive unit 62 is provided for each guide surface polishing unit 61 and is a mechanism that moves the guide surface polishing unit 61 between an operating mode in which it is in contact with the guide surface 211a of the guide rail 2 and a non-operating mode in which it is separated from the guide surface 211a. The drive unit 62 comprises a linear guide 620 and an air cylinder 621 as an air-driven actuator.

[0059] The linear guide 620 is mounted on the underside of the upper plate 500 of the housing 50 along the left-right direction and supports the base 610 of the guide surface polishing unit 61 by carriage. As a result, the two guide surface polishing units 61, 61 move in the left-right direction to narrow or widen the distance between them.

[0060] The air cylinder 621 is supplied with compressed air from the air compressor 60 through its first port and second port, respectively. The guide surface polishing unit 61 moves in the forward path to the operating mode by the piston extension operation of the air cylinder 621, which is operated by the supply of compressed air from the first port, and moves in the return path to the non-operating mode by the piston retraction operation of the air cylinder 621, which is operated by the supply of compressed air from the second port.

[0061] The combination of the right guide surface polishing unit 61A and its drive unit 62, and the combination of the left guide surface polishing unit 61B and its drive unit 62, are arranged parallel to each other with a gap between them in the left-right direction, and are arranged symmetrically in the left-right direction with respect to the front-back direction.

[0062] The tip surface polishing unit 63 comprises a base 630, a motor 631, a grinding wheel holder 632, and a rotating grinding wheel 633.

[0063] The base 630 is a metal block with a recess in part. The motor 631 is mounted to the rear of the base 630, with its drive shaft aligned along the front-rear direction. The grinding wheel holder 632 is mounted to the front of the base 630 so as to be rotatable about the front-rear direction, and is connected to the drive shaft of the motor 631 directly or indirectly via a coupling. The grinding wheel holder 632 has an end face perpendicular to the axis of rotation.

[0064] The rotating grinding wheel 633 has a disc or cylindrical shape and is detachably attached to the end face of the grinding wheel holder 632. The rotating grinding wheel 633 has a circumferential surface around the rotation axis of the grinding wheel holder 632 and an end face perpendicular to the rotation axis of the grinding wheel holder 632. The circumferential surface and the end face have abrasive grains and constitute the grinding wheel surface. The end face is annular or circular. The rotating grinding wheel 633 rotates on a vertical plane parallel to the tip surface 211b of the guide rail 2 as the grinding wheel holder 632 rotates.

[0065] The drive unit 64 is a mechanism that moves the tip surface polishing unit 63 between an operating mode in which it is in contact with the tip surface 211b of the guide rail 2 and a non-operating mode in which it is separated from the tip surface 211b. The drive unit 64 comprises a linear guide 640 and an air cylinder 641 as an air-driven actuator.

[0066] The linear guide 640 is mounted along the front-rear direction on the upper surface of the lower plate 501 of the housing 50 and supports the base 630 of the tip surface polishing unit 63 with a carriage.

[0067] The air cylinder 641 is supplied with compressed air from the air compressor 60 through its first port and second port, respectively. The tip surface polishing unit 63 moves in the forward path to the operating mode by the piston extension operation of the air cylinder 641, which is operated by the supply of compressed air from the first port, and moves in the return path to the non-operating mode by the piston retraction operation of the air cylinder 641, which is operated by the supply of compressed air from the second port.

[0068] The three air cylinders 621, 621, and 641 receive compressed air from a single air compressor 60. For example, the compressed air supply pipeline from the air compressor 60 to the three air cylinders 621, 621, and 641 branches off from a single main pipeline into three separate pipelines, each connected to a different air cylinder. A pressure switch is installed in the main pipeline, and compressed air is supplied from the air compressor 60 until the pressure set by the pressure switch is reached.

[0069] If remotely controllable solenoid valves are provided in each branch pipeline, allowing each air cylinder to be individually controlled ON / OFF, then the operation (grinding wheel contact) and non-operation (grinding wheel separation) of the two guide surface polishing units 61, 61 and the tip surface polishing unit 63 can be controlled independently for each polishing unit. Furthermore, if regulators are provided in each branch pipeline, allowing the pressure in each branch pipeline to be adjusted, then the contact pressure (pressing force) of the rotating grinding wheels 613, 613, and 633 can be adjusted independently for each unit. Otherwise, the operation (grinding wheel contact) and non-operation (grinding wheel separation) of the two guide surface polishing units 61, 61 and the tip surface polishing unit 63 are controlled synchronously.

[0070] If a driver unit is provided for each drive circuit of the three motors 611, 611, and 631, and each motor can be individually controlled ON / OFF, then the operation (grinding wheel rotation) and non-operation (grinding wheel rotation stop) of the two guide surface polishing units 61, 61 and the tip surface polishing unit 63 can be controlled independently for each polishing unit. Also, if a driver unit is provided and the rotation speed of each motor can be adjusted, then the rotation speed (grinding speed) of the rotating grinding wheels 613, 613, and 633 can be adjusted independently for each unit. Otherwise, the operation (grinding wheel rotation) and non-operation (grinding wheel rotation stop) of the two guide surface polishing units 61, 61 and the tip surface polishing unit 63 are controlled synchronously.

[0071] As shown in Figure 9, the main unit 3A further includes a step detection unit 65 as a functional unit. The step detection unit 65 has the function of detecting steps that occur between the two guide surfaces 211a, 211a and the two end surfaces 211b, 211b of the two guide sections 211, 211 at the connecting portion at both ends of the upper and lower guide rails 2, 2 during the movement stroke of the main unit 3A on the guide rail 2. The step detection unit 65 includes three reflective laser displacement sensors 650, 650, 652. Two sensors 650, 650 each measure the distance to the guide surface 211a. The other sensor 652 measures the distance to the end surface 211b. If a step occurs, the measured value changes discontinuously, so the step can be detected. In addition to laser displacement sensors (distance measuring means), various known non-contact or contact type detection means can be used as the step detection unit.

[0072] Two sensors 650, 650 are each mounted to the movable base 5 via bracket 651, and sensor 652 is mounted to the movable base 5 via bracket 653. As an example, three brackets 651, 651, and 653 are mounted on the upper surface of the top plate 500 of the housing 50. Two of the brackets 651, 651 are mounted so as to be adjustable in the left-right direction.

[0073] As shown in Figure 10, the control unit 30A of the main unit 3A controls the entire lapping device 3, including the operation and non-operation of the lapping section 6. The control unit 30A includes a driver unit 300 for the motor 440 of the drive unit 44, a driver unit 301 for the three motors 611, 611, and 631 of the lapping section 6, and a driver unit 302 for the three air cylinders 621, 621, and 641 of the lapping section 6.

[0074] Various switches are connected to the control unit 30A. The power on switch 310 is a switch that turns the power of the main unit 3A ON / OFF. The stop switch 311 is a switch that is effective in automatic operation mode and stops the movement of the main unit 3A. The lift switch 312 is a switch that is effective in manual operation mode and issues a hoisting command to the lifting machine 3B. The lower switch 313 is a switch that is effective in manual operation mode and issues a lowering command to the lifting machine 3B. The upward movement switch 314 is a switch that is effective in manual operation mode and issues an upward movement command to the motor 440 of the drive unit 44. The downward movement switch 315 is a switch that is effective in manual operation mode and issues a downward movement command to the motor 440 of the drive unit 44. The automatic / manual changeover switch 316 is a switch that selects whether to put the main unit 3A into automatic operation mode or manual operation mode. The lapping ON / OFF switches 317-319 are switches that are effective in manual operation mode and are used to individually select whether the right guide surface polishing unit 61A, the left guide surface polishing unit 61B, and the tip surface polishing unit 63 of the lapping section 6 are in operation mode or in operation mode.

[0075] A transmitting / receiving unit 320 is connected to the control unit 30A. The transmitting / receiving unit 320 functions as a transmitter that transmits hoisting commands (and related signals) and lowering commands (and related signals) to the receiving unit 340 of the lifting machine 3B. The transmitting / receiving unit 320 also functions as a receiver that receives operation commands (and related signals) to the functional units of the main unit 3A from a remote control (remote operation device), which will be described later. As an example, the transmitting / receiving unit 320 is in the form of a transceiver.

[0076] The control unit 30B of the lifting machine 3B includes a driver unit 330 for the motor 350 and a driver unit 331 for the brake 351. A receiving unit 340 is connected to the control unit 30B. The receiving unit 340 has the function of receiving hoisting commands (and related signals) and lowering commands (and related signals) from the transmitting / receiving unit 320. For example, the receiving unit 340 is in the form of a receiver. As mentioned above, if the lifting machine 3B is a commercially available product, the receiver is equipped with a plug compatible with the pendant switch mounting part of the lifting machine 3B, and by removing the pendant switch from the lifting machine 3B and installing the receiver in its place, it can be used without modifying the lifting machine 3B itself.

[0077] When the control unit 30B receives a hoisting command (or related signal) or a lowering command (or related signal) from the transmitting / receiving unit 320, it releases the brake 351 via the driver 331 and drives the motor 350 in forward or reverse direction via the driver 330 to hoist or lower the wire. When the control unit 30B no longer receives a hoisting command (or related signal) or a lowering command (or related signal), it stops driving the motor 350 via the driver 330 and activates the brake 351 via the driver 331. In other words, the lifting machine 3B is remotely controlled by the main unit 3A. Alternatively, the lifting machine 3B may be remotely controlled by the remote control after receiving a hoisting command (or related signal) or a lowering command (or related signal) from the remote control.

[0078] As shown in Figure 11(a), the switches of the main unit 3A are located on a control panel and operated by an operator. The control panel is, for example, located on the surface of the box 54 of the movable base 5.

[0079] As shown in Figure 11(b), the remote control has switches similar to those on the main unit 3A. The start switch is not present on the main unit 3A, but only on the remote control, and it is the switch that starts automatic operation. The reason for providing the start switch only on the remote control is that in an emergency, even if the main unit 3A is moved to a location out of the operator's reach and the stop switch 311 cannot be pressed, if the operator has the remote control in their hand from the start of automatic operation, they can immediately press the stop switch on the remote control. However, if there is no such concern, the start switch may be provided on the control panel of the main unit 3A.

[0080] <How to use the guide rail sliding device (automatic operation mode)> Next, the procedure for setting up the lapping device 3 and the contents of the automatic operation mode will be explained. In the automatic operation mode, the main unit 3A and the lifting machine 3B are linked by wireless communication, and the main unit 3A automatically moves while lapping the surface of the guide section 211 of the guide rail 2. In the manual operation mode, an operator rides in a gondola and moves with the main unit 3A, operating the control panel of the main unit 3A, or operating the remote control or the pendant switch of the lifting machine 3B, while lapping the surface of the guide section 211.

[0081] (Step 1) The worker moves to the top of the elevator shaft 1 by gondola and installs the lifting machine 3B with a wireless receiver 340 and the upper limit switch cam 10 at the top of the elevator shaft 1.

[0082] (Step 2) The worker moves to the lowest point of elevator shaft 1 by gondola.

[0083] (Step 3) The operator connects an external power supply to the main unit 3A. Note that if the power supply (battery) built into the main unit 3A is used, step 3 is unnecessary.

[0084] (Step 4) The worker lowers the wire 31B of the lifting machine 3B, attaches the hook 32B to the main unit 3A, and then brings the main unit 3A into the hoistway 1.

[0085] (Step 5) The worker installs the main unit 3A on the lowest guide rail 2 and the lower limit switch cam 11 at the bottom of the elevator shaft 1.

[0086] (Step 6) The operator presses the start switch on the remote control. This initiates automatic operation. At the start of automatic operation, the movable base 5 is positioned at the intermediate position within its vertical movement range (the position detected by the LS450).

[0087] (Operation 7) The main unit 3A issues a hoisting command to the lifting machine 3B and raises itself until the step detection unit 65 detects a step on the guide surface 211a or the tip surface 211b of the guide portion 211 of the guide rail 2.

[0088] (Operation 8) When the main unit 3A detects a step, after a predetermined time, it stops issuing hoisting commands to the lifting machine 3B, which it had been issuing until then, and stops itself. The amount of the detected step is stored in the memory of the control unit 30A. The predetermined time refers to the time when the movable base 5 is in the intermediate position and the rotating grinding wheels 613, 613, 633 stop at the joint of the connecting part at both ends of the upper and lower guide rails 2, 2 (the position where the step occurs, including the vicinity) (see Figure 6).

[0089] (Operation 9) The main unit 3A controls the operation and deactivation of the three polishing units 61, 61, 63 of the sliding joint 6 in one of the following patterns a to d, while issuing up and down movement commands to the motor 440 of the drive unit 44. As a result, the rotating grinding wheels 613, 613, 633 grind (polish) the surface of the guide portion 211 of the guide rail 2 within a predetermined range that spans the joints of the connecting portions at both ends of the upper and lower guide rails 2, 2. Of course, the patterns are not limited to these.

[0090] a) When the processing area, with the location of the step as the intermediate position, is divided into an upper and lower section with the location of the step as the boundary and then slid together. 1) For either the upper or lower processing area, 1-1) the polishing unit corresponding to the protruding surface due to the step is in operating mode (grinding wheel rotation + grinding wheel contact), 1-2) the polishing unit corresponding to the recessed surface due to the step is in non-operating mode (grinding wheel rotation stopped + grinding wheel separation), and 1-3) vertical movement commands are issued for a number of reciprocations corresponding to the amount of the step (one reciprocation is an upward movement command to the upper limit position → downward movement command to the intermediate position, or a downward movement command to the lower limit position → upward movement command to the intermediate position). 2) For either the upper or lower processing area, the following commands are issued: 2-1) The polishing unit corresponding to the protruding surface due to the step is in operating mode (grinding wheel rotation + grinding wheel contact), 2-2) The polishing unit corresponding to the recessed surface due to the step is in non-operating mode (grinding wheel rotation stopped + grinding wheel separation), 2-3) The number of reciprocating commands corresponding to the amount of the step is determined (one reciprocating command is a downward command to the lower limit position → an upward command to the intermediate position, or an upward command to the upper limit position → a downward command to the intermediate position). 3) Remeasurement of step height 4) (If there are still steps remaining) Repeat steps 1-3.

[0091] b) When the processing area, with the location of the step as the intermediate position, is not divided into an upper and lower section with the location of the step as the boundary, and the area is ground down. 1) 1-1) Issue vertical movement commands for a number of cycles corresponding to the step difference (1 cycle is an upward movement command to the upper limit position → a downward movement command to the lower limit position → an upward movement command to the intermediate position, or a downward movement command to the lower limit position → an upward movement command to the upper limit position → a downward movement command to the intermediate position). 1-2) For each of the upper and lower processing areas, the polishing unit corresponding to the protruding surface due to the step difference is set to operating mode (grinding wheel rotation + grinding wheel contact). 1-3) For each of the upper and lower processing areas, the polishing unit corresponding to the recessed surface due to the step difference is set to non-operating mode (grinding wheel rotation stopped + grinding wheel separation). 2) Remeasurement of step height 3) (If there are still steps remaining) Repeat steps 1-2

[0092] c) A vertical movement command for one or more reciprocations (regardless of the step height) for the upper or lower processing area. d) One or more vertical movement commands for the entire processing area (regardless of the step height).

[0093] Here, the stroke of the movable base 5 during multiple reciprocating or multiple cycle operations is constant regardless of the number of reciprocations or cycles, as shown in Figure 12(a). However, as shown in Figure 12(b), it is also possible to employ a control that gradually shortens the stroke as the number of reciprocations or cycles increases (by a certain amount or according to a pattern pre-stored in the memory of the control unit 30A). Furthermore, as shown in Figure 12(c), it is also possible to employ a control that increases the contact pressure of the rotating grinding wheels 613, 613, 633 towards the stepped side.

[0094] (Operation 10) Once the main unit 3A has finished the lapping process at the relevant location, it puts the lapping section 6 into a non-operating mode.

[0095] The main unit 3A performs sliding adjustments up to the uppermost guide rail 2 by repeating operations 7 to 10.

[0096] When the main unit 3A detects the upper limit switch cam 10, it stops issuing hoisting commands to the lifting machine 3B, which it had been issuing until then, and stops itself. Alternatively, it may change to a lowering command and lower itself to the lower limit position.

[0097] This completes the fitting of one row of guide rails 2. To fit another row of guide rails 2, the worker switches the main unit 3A and repeats the same process.

[0098] As described above, the lapping device 3 according to this embodiment stops at a position where a step occurs on the surface of the guide portion 211 of the guide rail 2, and performs lapping of the surface of the guide portion 211 within a predetermined range. For this reason, the lapping device 3 according to this embodiment can effectively reduce processing time compared to the case where lapping is performed along the entire length of the guide rail 2.

[0099] The lapping device 3 according to this embodiment includes a first guide surface polishing unit 61A equipped with a rotating grinding wheel 613 corresponding to the first guide surface 211a of the two guide surfaces 211a, 211a of the surface of the guide portion 211, and a second guide surface polishing unit 61B equipped with a rotating grinding wheel 613 corresponding to the second guide surface 211a. The two guide surfaces 211a, 211a are the main surfaces of the guide portion 211, and it is extremely important for the operation of the elevator that the surface condition of these surfaces is good. For this reason, the lapping device 3 according to this embodiment can perform lapping of the two guide surfaces 211a, 211a automatically and with high precision.

[0100] The lapping device 3 according to this embodiment further includes a tip surface polishing unit 63 equipped with a rotating grinding wheel 633 corresponding to the tip surface 211b of the surface of the guide portion 211. Therefore, the lapping device 3 according to this embodiment can perform lapping of the entire surface of the guide portion 211 automatically and with high precision.

[0101] According to the lapping device 3 of this embodiment, with the movable base 5 positioned in the middle of its vertical movement range, the rotating grinding wheels 613 and 633 stop at the position where the step occurs and perform lapping. As a result, the processing area with the position where the step occurs as the middle position has an equal range between the upper processing area and the lower processing area separated by the position where the step occurs. Therefore, according to the lapping device 3 of this embodiment, uniform lapping can be performed without bias between the upper and lower parts.

[0102] According to the lapping device 3 of this embodiment, the surface of the guide portion 211 is polished using the grinding surface of the end face of the rotating grinding wheels 613, 633. Therefore, the lapping device 3 of this embodiment can effectively prevent inaccuracies of the machined surface (the machined surface is tilted) caused by the tilting of the rotating grinding wheels 613, 633.

[0103] According to the lapping device 3 of this embodiment, the device base 4 is driven by a lifting machine 3B that suspends and supports the device base 4. Therefore, according to the lapping device 3 of this embodiment, the main device 3A can be made lighter, which in turn reduces the amount of labor required and allows the lapping process to be performed more efficiently.

[0104] It should be noted that the present invention is not limited to the embodiments described above, and various modifications are possible without departing from the spirit of the invention.

[0105] In the above embodiment, an example of sliding the guide rail 2 for the cage was described. However, the present invention is not limited to this. It goes without saying that the sliding device can also be used when sliding the guide rail for the counterweight.

[0106] In the above embodiment, the control unit 30A is mounted on the device base 4. However, the present invention is not limited thereto. The control unit may be separated from the main unit, and wireless communication may be performed between the control unit and the main unit.

[0107] In the above embodiment, a drive unit 44 consisting of a motor 440, a ball screw 441, and a nut 443 is used as a means for moving the movable base 5 up and down. However, the present invention is not limited thereto. Various known means can be used to move the movable base up and down, such as a hydraulic cylinder, an air cylinder, a rope wrapped around a sheave (pulley), a combination of a pinion rack, etc.

[0108] In the above embodiment, limit switches 450-452 on the device base 4 side and limit switch cams 52 on the movable base 5 side are used as means for detecting the height position of the movable base 5. However, the present invention is not limited thereto. Various known means can be used for detecting the height position of the movable base. Alternatively, even if a combination of limit switches and cams is used, one limit switch may be provided on the movable base side and three cams may be provided on the device base side.

[0109] In the above embodiment, three LS450~452 are used to define the intermediate, upper limit, and lower limit positions of the vertical movement range of the movable base 5, enabling the movable base 5 to perform cyclic movements. However, the present invention is not limited to this. For example, as shown in Figure 13, the LS452 may be eliminated, and the upper and lower limit positions of the vertical movement range of the movable base 5 may be defined, enabling the movable base 5 to perform only reciprocating movements. In terms of usage, when lapping a processing area with a step at the intermediate position, dividing it into an upper and lower section with the step as the boundary, the process involves moving the main unit 3A after the lapping of either the upper or lower processing area is completed, and then lapping the other of the upper or lower processing area. With this configuration, the overall height of the device base 4 can be shortened, and the main unit 3A of the lapping device 3 can be made lighter.

[0110] In the above embodiment, polishing is performed on the end faces of the rotating grinding wheels 613 and 633. However, the present invention is not limited to this. As shown in Figure 14, polishing may also be performed on the circumferential surfaces of the rotating grinding wheels 613 and 633. Figure 14(a) is an example where the width of the rotating grinding wheel 613 is greater than the width of the guide surface 211a of the guide portion 211 of the guide rail 2, and Figure 14(b) is an example where the width of the rotating grinding wheel 613 is smaller than the guide surface 211a. In the latter case, the grinding is performed in multiple stages in the front-rear direction.

[0111] In the above embodiment, a lifting machine 3B is used as the drive unit of the main unit 3A. However, the present invention is not limited thereto. The main unit itself may be a self-propelled type equipped with a drive unit.

[0112] In the above embodiment, a laser displacement sensor is used as a detection unit to detect when the main unit 3A reaches a position on the surface of the guide portion 211 of the guide rail 2 during its movement along the guide rail 2 where a step has occurred. However, the present invention is not limited to this. Various configurations can be adopted for the detection unit, including the following configurations a to f. Note that in the following cases a to c, e and f, a step does not necessarily occur. In this case, strictly speaking, the detection unit detects when the unit has reached a position where a step may occur. a) The main unit is equipped with detection means such as sensors to detect the position of the joints in the guide rails. b) The main unit is equipped with detection means such as a sensor for detecting connecting material (spanner) or fasteners for connecting material (spanner bolt). c) The control unit of the main unit stores information about the number of joints in the guide rail in advance, and when that number is reached, the fitting process is terminated. d) The control unit of the main unit stores information regarding the total length of one row of guide rails in advance. When the cumulative distance traveled by the main unit (the travel speed is known from the specifications of the lifting machine, and the travel distance is calculated from the travel speed and the measured value of the travel time) reaches the total length minus the margin, the fitting process is terminated. e) The control unit of the main unit stores the position information of the guide rail joints in advance, and determines the stopping position based on this position information. f) The control unit of the main unit stores information regarding the length and order of each guide rail in a row of guide rails in advance, and determines the stopping position based on that information.

[0113] In the above embodiment, a combination of a limit switch 410 and limit switch cams 10 and 11 is used as a means for defining the upper and lower limits of the main unit 3A. However, the present invention is not limited thereto. For example, a non-contact sensor (such as a photoelectric sensor) may be used, or the main unit may be equipped with an imaging means such as a camera, and the reversal point may be determined based on the captured image.

[0114] In the above embodiment, the lapping process is performed during the upward stroke of the main unit 3A toward the upper limit position. However, the present invention is not limited thereto. The lapping process may also be performed during the downward stroke of the main unit toward the lower limit position.

[0115] In the above embodiment, the main unit 3A and the lifting machine (sub-unit) 3B are used in a one-to-one ratio. However, the present invention is not limited to this. As shown in Figure 15, it is also possible to attach the main unit 3A to each of the two rows of guide rails 2,2, connect the two main units 3A,3A with a connecting member 33 to form a single unit, attach a hook to the central part of the connecting member 33, and use one lifting machine 3B to raise and lower the two main units 3A,3A, thereby processing the two rows of guide rails 2,2 simultaneously. In this case, not only can the processing time be shortened and processing costs be reduced, but there is also the effect of being able to use the lifting machine that is already installed between the two rows of guide rails 2,2, instead of preparing and installing a lifting machine for the main unit 3A.

[0116] In this invention, terms that specify shapes, parts, states, or directions, such as "rectangular," "straight line," "center," "center," "end," "side," "equal," "same," "parallel," "orthogonal," "up and down," "front and back," and "left and right," include not only the terms themselves but also the concept of "abbreviated," meaning something close to or similar to them. Furthermore, "intermediate" is not a term that intends the middle of a range, but rather any position between the ends of a range. [Explanation of Symbols]

[0117] 1...Hoistway, 1a...Wall surface, 10...Upper limit switch cam, 11...Lower limit switch cam, 2...Guide rail, 20...Base, 21...Protruding part, 210...Connecting part, 211...Guide part, 211a...Guide surface (first guide surface, second guide surface), 211b...Tip surface, 22...Convex ridge, 23...Concave groove, 25...Connecting material, 250...Fixing device, 27...Guide rail support, 270...Wall bracket, 271...Rail bracket, 272...Rail clip, 273...Fixing device, 3...Guide rail sliding device, 3A...Main unit, 30A...Control unit, 300~302...Driver unit, 310...Power on switch, 311...Stop switch, 312...Up switch, 313...Down switch, 314...Up movement switch 315... Downward movement switch, 316... Automatic / manual changeover switch, 317~319... Sliding ON / OFF changeover switch, 320... Transmitter / receiver unit, 3B... Lifting machine (sub-device), 30B... Control unit, 330, 331... Driver unit, 340... Receiver unit, 350... Motor, 351... Brake, 31B... Wire, 32B... Hook, 33... Connecting member, 4... Device base, 40... Housing, 400... Vertical plate, 401... Reinforcement member, 402... Upper plate, 403... Engaged part, 404... Lower plate, 41... Height position detection unit, 410... Limit switch, 42... Guide unit (guide body), 420... Base, 421... Shaft, 422... Oscillating body, 423... Roller, 423a... Flange unit, 424, 425... Elastic force application unit, 424a,425a...Adjustment unit, 426...Spacer block, 427...Roller, 43...Guide body, 44...Drive unit, 440...Motor, 441...Ball screw, 442...Bearing, 443...Nut, 45...Height position detection unit, 450~452...Limit switch, 46...Stopper, 5...Movable base, 50...Housing, 500...Upper plate, 501...Lower plate, 502...Connecting material, 51...Slide body, 52...Limit switch cam, 53...Mounting plate, 54...Box, 55...Base frame, 6...Sliding part, 60...Air compressor, 61...Guide surface polishing unit, 61A...Right guide surface polishing unit ( 61B…Left guide surface polishing unit (second guide surface polishing unit), 610…Base, 611…Motor, 612…Grinding wheel holder, 613…Rotating grinding wheel, 614…Belt, 62…Drive unit, 620…Linear guide, 621…Air cylinder, 63…Tip surface polishing unit, 630…Base, 631…Motor, 632…Grinding wheel holder, 633…Rotating grinding wheel, 64…Drive unit, 640…Linear guide, 641…Air cylinder, 65…Step detection unit, 650…Laser displacement sensor, 651…Bracket, 652…Laser displacement sensor, 653…Bracket

Claims

1. An elevator guide rail sliding device that stops at a position where a step exists or is likely to occur on the surface of the guide portion of a guide rail extending vertically within a hoistway, and slides the surface of the guide portion within a predetermined range, A device base configured to be movable along a guide rail, The drive unit of the device base, A movable base configured to move up and down within a predetermined range on the device base, The drive unit of the movable base, A sliding part is provided, which is mounted on a movable base and has a rotating grinding wheel that can move in and out of contact with the surface of the guide part, and in the operating mode, the rotating grinding wheel is rotated and brought into contact with the surface of the guide part, thereby polishing and lapping the surface of the guide part in accordance with the upward, downward, or vertical movement of the movable base, It includes a control unit that controls the operation and non-operation of each drive unit and sliding part. Elevator guide rail sliding device.

2. The sliding section comprises a first guide surface polishing unit equipped with a rotating grinding wheel corresponding to the first guide surface of two of the guide surfaces on the surface of the guide section, and a second guide surface polishing unit equipped with a rotating grinding wheel corresponding to the second guide surface. The control unit independently or synchronously controls the operation and non-operation of the first guide surface polishing unit and the second guide surface polishing unit. The elevator guide rail sliding device according to claim 1.

3. The sliding section further includes a tip surface polishing unit equipped with a rotating grinding wheel corresponding to the tip surface of the guide section's surface, The control unit independently or synchronously controls the operation and non-operation of the first guide surface polishing unit, the second guide surface polishing unit, and the tip surface polishing unit. The elevator guide rail sliding device according to claim 2.

4. The control unit controls each drive unit so that the rotating grinding wheel stops at a position where a step has occurred or where a step could occur, when the movable base is positioned in the middle of its vertical movement range. An elevator guide rail sliding device according to any one of claims 1 to 3.

5. The rotating grinding wheel has a grinding surface on an end face perpendicular to the axis of rotation, and the surface of the guide section is polished with the grinding surface on the end face. An elevator guide rail sliding device according to any one of claims 1 to 3.

6. The device base is equipped with a lifting machine that suspends and supports the device base as the drive unit. The control unit controls the raising and lowering of the lifting machine. An elevator guide rail sliding device according to any one of claims 1 to 3.

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