Elevator guide rail alignment device

Abstract

To provide an elevator guide rail alignment device capable of effectively reducing processing time. [Solution] The lapping device stops at a position where a step occurs or a step may occur on the surface of a guide section 211 of a guide rail 2, and lapping the surface of the guide section 211 within a predetermined range. This lapping device comprises: i) an apparatus base 4 that is movable on the guide rail 2, ii) a movable base 5 that is movable up and down within a predetermined range on the apparatus base 4, and iii) a lapping section 6 that is mounted on the movable base 5 and has a rotary grindstone 613 that can be brought into contact with and separated from the surface of the guide section 211, and in an operating mode, rotates the rotary grindstone 613 and brings it into contact with the surface of the guide section 211, thereby grinding and lapping the surface of the guide section 211 as the movable base 5 moves up, down, or up and down.

Description

[Technical Field]

[0001] The present invention relates to a fitting device for fitting elevator guide rails. [Background technology]

[0002] The guide rails are cut to the appropriate length at the factory, shipped, and transported to the installation site. At the installation site, they are connected in a continuous line from the bottom (pit) to the top of the hoistway and attached to the wall of the hoistway. At this time, if there are any unevenness on the surface of the guide rail along its entire length, it is necessary to perform a process to eliminate the unevenness (floating process). This is because a poor surface condition of the guide rail can cause undesirable phenomena for elevator operation, such as a poor ride quality for the car and the generation of vibrations and abnormal noise.

[0003] Normally, the fitting process is carried out by workers, but manually fitting 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 rails is extremely labor-intensive and time-consuming.

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

[0005] [Patent Document 1] International Publication No. 2019 / 008708 [Patent Document 2] International Publication No. 2019 / 142362 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the grinding devices described in Patent Documents 1 and 2 perform grinding over the entire length of each row of guide rails, which inevitably results in a large amount of grinding, and in this case, in order to obtain sufficient grinding accuracy, it is necessary to make the grinding device go back and forth many times or to slow down the moving speed of the grinding device, which does not significantly reduce the processing time.

[0007] SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide an elevator guide rail alignment device that can effectively reduce processing time. [Means for solving the problem]

[0008] The elevator guide rail alignment device according to the present invention comprises: An elevator guide rail alignment device that stops at a position where a step occurs or a position where a step may occur on the surface of a guide part of a guide rail that extends vertically in a hoistway, and performs alignment of the surface of the guide part within a predetermined range, a device base configured to be movable on a guide rail; a device-based drive; a movable base configured to be movable up and down within a predetermined range on the device base; a drive unit of a movable base; a grinding unit that is mounted on the movable base and has a rotary grindstone that can be brought into contact with and separated from the surface of the guide unit, and in an operating mode, grinds and grinds the surface of the guide unit as the movable base moves up, down, or up and down; A control unit that controls the operation and non-operation of each drive unit and each sliding unit. 、 The control unit controls the driving unit of the movable base so that the grinding wheel moves back and forth multiple times, with one reciprocating motion being defined as an operation of moving up or down from a position where a step has occurred or a position where a step may occur, then turning around and returning to the original position, or so that the grinding wheel moves back and forth multiple times, with one cycle being an operation of moving up or down from a position where a step has occurred or a position where a step may occur, then turning around and returning to the original position, and then further moving to the opposite side, then turning around and returning to the original position, and the control unit controls the driving unit of the movable base so that the stroke becomes shorter in stages as the number of reciprocating motions or the number of cycles increases. This is an elevator guide rail alignment device. Furthermore, the elevator guide rail alignment device according to the present invention is An elevator guide rail alignment device that stops at a position where a step occurs or a position where a step may occur on the surface of a guide part of a guide rail that extends vertically in a hoistway, and performs alignment of the surface of the guide part within a predetermined range, a device base configured to be movable on a guide rail; a device-based drive; a movable base configured to be movable up and down within a predetermined range on the device base; a drive unit of a movable base; a grinding unit that is mounted on the movable base and has a rotary grindstone that can be brought into contact with and separated from the surface of the guide unit, and in an operating mode, grinds and grinds the surface of the guide unit as the movable base moves up, down, or up and down; a control unit that controls the operation and non-operation of each drive unit and each sliding unit, The control unit controls the drive unit of the movable base so that the grinding wheel performs one or more reciprocating movements, with one reciprocating movement being defined as an operation in which the grinding wheel moves up or down from a position where a step has occurred or a position where a step may occur, then reverses and returns to the original position, or so that the grinding wheel performs one or more cycles, with one cycle being an operation in which the grinding wheel moves up or down from a position where a step has occurred or a position where a step may occur, then reverses and returns to the original position, and then further moves to the opposite side, then reverses and returns to the original position, and the control unit controls the operation of the grinding unit so that the contact pressure of the grinding wheel increases the closer it is to a position where a step has occurred or a position where a step may occur. This is an elevator guide rail alignment device.

[0009] As one aspect of the elevator guide rail alignment device according to the present invention, the grinding unit includes a first guide surface grinding unit having a grindstone corresponding to a first guide surface of two guide surfaces of the guide unit, and a second guide surface grinding unit having a grindstone corresponding to the second guide surface; The control unit controls the operation and non-operation of the first guide surface polishing unit and the second guide surface polishing unit independently or synchronously. The above configuration can be adopted.

[0010] As one aspect of the elevator guide rail alignment device according to the present invention, the grinding unit further includes a tip surface grinding unit having a grindstone corresponding to the tip surface of the surface of the guide unit; The control unit 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 independently or synchronously. The above configuration can be adopted.

[0011] As one aspect of the elevator guide rail alignment device according to the present invention, The control unit controls the operation and non-operation of the two guide surface polishing units so that the guide surface polishing unit corresponding to the surface of the two guide surfaces that protrudes due to the step is in the operation mode, and the guide surface polishing unit corresponding to the surface of the two guide surfaces that is recessed due to the step is in the non-operation mode. The above configuration can be adopted. in this case, The control unit controls the operation and non-operation of the two guide surface grinding units so that the operation mode and non-operation mode are switched when the grinding wheel passes through a position where a step occurs during cycle operation. The above configuration can be adopted. [Effects of the Invention]

[0014] According to the present invention, the guide rail is stopped at a position where a step occurs or a step may occur on the surface of the guide portion of the guide rail, and the surface of the guide portion is brought into contact with the guide rail within a predetermined range. Therefore, according to the present invention, the processing time can be effectively reduced compared to when the contact is made over the entire length of the guide rail. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a perspective view of a guide rail. [Figure 2] Fig. 2(a) is a vertical cross-sectional view of the inside of the elevator shaft, and Fig. 2(b) is a vertical cross-sectional view of the inside of the elevator shaft with the guide rail alignment device set therein. [Figure 3] FIG. 3 is a perspective view of the main device of the guide rail alignment device as seen obliquely from behind. [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 unit. [Figure 7] Fig. 7(a) is a perspective view of the movable base of the main unit and the mating part mounted on the movable base, seen from diagonally forward, and Fig. 7(b) is a plan view of the main components of the mating part. [Figure 8] Figure 8(a) is a perspective view of the mating part in the operating mode, and Figure 8(b) is a perspective view of the mating part in the non-operating mode. [Figure 9] Fig. 9(a) is a perspective view of the step detector mounted on the movable base, and Fig. 9(b) is a plan view of the main components of the step detector. [Figure 10] FIG. 10 is a block diagram of the control unit of the guide rail alignment device (main device and crane (auxiliary device)). [Figure 11] Fig. 11(a) is a front view of the control panel of the main unit, and Fig. 11(b) is a front view of the remote control. [Figure 12]12(a) and 12(b) are explanatory diagrams relating to stroke control of the grindstone, and Fig. 12(c) is an explanatory diagram relating to contact pressure control of the grindstone. [Figure 13] FIG. 13 is a side view of a main device of a guide rail alignment device according to another embodiment. [Figure 14] 14(a) and 14(b) are explanatory views of a grindstone according to another embodiment. [Figure 15] FIG. 15 is an explanatory diagram of another method of using the guide rail alignment device. DETAILED DESCRIPTION OF THE INVENTION

[0016] <Elevator and guide rail configuration> The elevator guide rail alignment device will be described below, but first, the configuration of the elevator and guide rails will be described.

[0017] As shown in Figures 1 and 2(a), an elevator comprises a hoistway 1, a car, and a car drive mechanism. The hoistway 1 extends vertically in a multi-story building. A pair (two rows) of guide rails 2, 2 are attached to two opposing wall surfaces 1a, 1a of the hoistway 1 so as to extend vertically. The car moves up and down in the hoistway 1 while being guided by the guide rails 2 as guide bodies attached at four locations (top, bottom, left, and right) slide on the guide rails 2. The car drive mechanism moves the car up and down and stops it at a designated floor.

[0018] The guide rail 2 is T-shaped in a plan view and includes a base 20 and a protruding portion 21. The base 20 is a strip-like plate extending in the vertical direction and is disposed parallel to and at a predetermined distance from the wall surface 1a of the elevator shaft 1. The protruding portion 21 is a strip-like plate extending in the vertical direction, is connected at one side to the center of the base 20, and protrudes perpendicularly from the base 20.

[0019] The protrusion 21 includes a connection portion 210 and a guide portion 211. The connection portion 210 connects the base portion 20 and the guide portion 211. The connection portion 210 is narrower than the guide portion 211 and forms a constricted portion at the protrusion 21. The guide portion 211 slides against the guide body of the car and guides the guide body to move linearly in the vertical direction. The guide portion 211 includes two guide surfaces 211a, 211a (a first guide surface 211a and a 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 to each other or tapered so that the tip side is 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 rails 2 have an appropriate length, and are joined together and extended in the vertical direction by connecting both end portions of the two guide rails 2, 2. The end portion of one of the guide rails 2 has a ridge 22 on its end surface, and the end portion of the other guide rail 2 has a groove 23 on its end surface. The ridge 22 and groove 23 are formed along the front-rear direction and are formed between the tip end surface 211b and the back surface of the base 20. The ridge 22 and groove 23 are fitted together, so that both end portions of the upper and lower guide rails 2, 2 are connected without misalignment in the horizontal direction.

[0021] Both ends of the upper and lower guide rails 2, 2 are connected using a connecting material 25 such as a batten. 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, spanning both ends. A plurality of screw holes or through holes are formed in the upper and lower half regions of the connecting material 25, and through holes corresponding to the holes are formed in the ends of the guide rails 2. The connecting material 25 is joined to the ends of the guide rails 2 using fixing devices 250.

[0022] The guide rail 2 is fixed to the wall surface 1 a of the hoistway 1 at appropriate locations in the longitudinal direction using guide rail supports 27. The guide rail support 27 includes a wall bracket 270, a rail bracket 271, and a rail clip 272. The wall bracket 270 is fixed to the wall surface 1 a of the hoistway 1 using a fastener. Alternatively, the wall bracket 270 is fixed to a beam or frame provided along the wall surface 1 a of the hoistway 1 using a fastener and / or a welding method. After being positioned relative to the wall bracket 270, the rail bracket 271 is fixed to the wall bracket 270 using a fastener and a welding method. The rail clips 272 are fixed to the vertical surfaces of the rail bracket 271 using fasteners 273 at two locations on the left and right of the base 20 of the guide rail 2, while abutting against the outer surface of the base 20.

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

[0024] (Installation process of the first guide rail) At the lowest part (pit) of the elevator shaft 1, the worker adjusts the horizontal position of the rail bracket 271 fixed to the first guide rail 2 relative to the corresponding wall bracket 270, thereby aligning it with the first guide rail 2, and after the alignment is complete, fixes the rail bracket 271 to the wall bracket 270 (full fixation).

[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 of the second guide rail) The worker temporarily fixes the rail bracket 271 to 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] By repeating these steps, the worker connects the guide rails 2 one after another upwards until they are installed up 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 centered, and the rail brackets 271 to be fixed to the second and subsequent guide rails 2 have not yet been fully fixed to the wall brackets 270. Therefore, the worker or the guide rail centering device performs these steps.

[0030] (Rubbing process) The guide rail 2 includes some processing errors in dimensions such as the width of the guide portion 211 in the left-right direction and the length of the protrusion 21. As a result, the surfaces of the two guide portions 211, 211 at the connecting portions at both ends of the upper and lower guide rails 2, 2 may not be flush, resulting in steps. Even if the steps are minute, they can cause vibrations and abnormal noise when the guide body of the car passes over the steps during operation. Therefore, a guide rail fitting device is used to perform fitting to remove any steps on the surface of the guide portion 211 and finish the surface of the guide portion 211 into a smooth surface before the elevator starts operating.

[0031] <Configuration of guide rail alignment device> As shown in FIG. 2(b), the guide rail alignment device (hereinafter, abbreviated as "alignment device") 3 is configured to include a main device 3A and a lifting machine 3B as an auxiliary device.

[0032] The main device 3A is configured to be able to move on the guide rail 2 while gripping the guide rail 2. The main device 3A is suspended from the crane 3B and moves upward (rises) as the crane 3B winds up the wire rod, and moves downward (descends) as the crane 3B winds down the wire rod. The main device 3A is equipped with various functional units, which will be described later.

[0033] The lifting machine 3B is attached to the upper part of the hoistway 1 (preferably, the top part of the hoistway 1). The lifting machine 3B is an electric or manual lifting machine, and a commercially available product is used. Electric lifting machines include hoists, winches, cranes, and chain blocks. Manual lifting machines include chain blocks, lever blocks (registered trademark), and chill holes. The lifting machine 3B is not limited to any of these, and any appropriate machine can be used.

[0034] An upper limit switch cam 10 is installed at a predetermined upper position within the hoistway 1 (as a preferred example, the uppermost position within the hoistway 1, near the upper end of the uppermost guide rail 2), and a lower limit switch cam 11 is installed at a predetermined lower position within the hoistway 1 (as a preferred example, the lowermost position within the hoistway 1, near the lower end of the lowermost guide rail 2). The cams 10, 11 are fixed using fixing devices to fixed parts such as the guide rail 2, beam, frame or bracket within the hoistway 1. The cams 10, 11 are installed on the movement path of the limit switch 410 provided in the main unit 3A, and are installed to activate the limit switch 410.

[0035] 3, the main device 3A includes a device base 4 and a movable base 5. The device base 4 is configured to be able to move on the guide rail 2 while gripping the guide rail 2. The device base 4 includes a housing 40, a height position detection unit 41, and a guide unit (guide body) 42.

[0036] 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 hoistway 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 hoistway 1, and "up" and "down" refer to the longitudinal direction of the guide rail 2, i.e., the vertical direction. This also applies to the other figures.

[0037] The housing 40 includes 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 having a rectangular shape elongated in the up-down direction, a predetermined width in the left-right direction, and sufficient rigidity. The reinforcing member 401 is a strip-shaped metal plate having a rectangular shape elongated in the up-down direction, a predetermined width in the front-rear direction, and sufficient rigidity. The reinforcing member 401 is fixed to the vertical plate 400 using fasteners and / or welding, abutting perpendicularly against the left and right sides of the vertical plate 400. The reinforcing member 401 functions to reinforce the vertical plate 400 so that it does not bend in the front-rear direction. The vertical plate 400 and the two reinforcing members 401, 401 have multiple lightening holes for weight reduction within a range that does not affect strength. The upper plate 402 is a sufficiently rigid metal plate attached to the upper part of the vertical plate 400 and the two stiffeners 401, 401, and is arranged along a horizontal plane. The lower plate 404 is a sufficiently rigid metal plate attached to the lower part of the vertical plate 400 and the two stiffeners 401, 401, and is arranged along a horizontal plane.

[0038] An engaged part 403 such as an eyebolt is attached to the upper surface of the upper plate 402. A hook 32B attached to the tip of a wire 31B such as a wire, chain, or rope hanging down from the main body of the lifting machine 3B engages with the engaged part 403 and supports the device base 4 by suspending it.

[0039] The height position detection unit 41 includes a limit switch 410. The limit switch 410 is attached to the vertical plate 400 directly or indirectly via a bracket or the like. An actuator portion of the limit switch 410 protrudes laterally and can come into contact with and separate from the cams 10 and 11.

[0040] The guide portions 42 are attached to the upper surface of the upper plate 402 and the lower surface of the lower plate 404. The upper and lower guide portions 42, 42 have the same structure.

[0041] 4 and 5, the guide portion 42 is a roller guide including three rollers 423, 423, 427 that contact three surfaces of the guide rail 2: the two guide surfaces 211a, 211a and the tip surface 211b. Each of the two rollers (or drums) 423, 423 contacts the guide surface 211a, has a flange portion 423a at its tip, and engages with the constricted portion 210 of the guide rail 2. The roller 427 contacts the tip surface 211b. This allows the guide portion 42 to grip the guide rail 2 (the guide portion 211) without falling off the guide rail 2 (the guide portion 211).

[0042] The guide unit 42 includes a base 420, two shafts 421, and two oscillators 422. The base 420 is fixed to the upper plate 402 or the lower plate 404 using a fixture. The two shafts 421 are arranged so that their respective axes are aligned in the front-rear direction and are parallel to each other with a gap in the left-right direction. Each shaft 421 is supported by the base 420 so as to be rotatable around the front-rear direction and slidable in the front-rear direction. Each oscillator 422 is integrated with each shaft 421 and oscillates around the front-rear direction in response to the rotation of each shaft 421. Each roller 423 is supported by each oscillator 422 so as to be rotatable around the front-rear direction.

[0043] The guide portion 42 includes resilient force applying portions 424, 425. The resilient force applying portion 424 applies a resilient force to the shaft 421 in the backward direction. As a result, the roller 423 (the flange portion 423a) and the roller 427 sandwich the guide portion 211 of the guide rail 2 in the front-to-rear direction. The resilient force applying portion 425 applies a resilient force to the two oscillating bodies 422, 422 in the direction narrowing the gap between them. As a result, the two rollers 423, 423 sandwich the guide portion 211 in the left-to-right direction. The resilient force and the resulting sandwiching force (the sandwiching force in the front-to-rear direction and the sandwiching force in the left-to-right direction) can be adjusted by (rotating) the adjustment portions 424a, 425a, which are in the form of double nuts or the like, to adjust the degree of compression of the elastic bodies.

[0044] The guide unit 42 includes a spacer block 426 (shown by dotted lines in FIG. 4). The spacer block 426 abuts against the opposing surfaces of the two oscillators 422, 422, thereby restricting further oscillation of the two oscillators 422, 422, eliminating the torsional moment of the oscillator 422 that occurs when the two rollers 423, 423 receive a reaction force from the guide unit 211 of the guide rail 2, and reducing the unbalanced load caused by the cantilever. The spacer block 426 has a tapered shape that narrows in stages toward the front, and is attached to the base 420 so as to be slidable in the front-to-rear direction. This is to accommodate the fact that the spacing between the two rollers 423, 423 when abutting against the guide unit 211 varies depending on the size of the guide rail 2 (difference in the width of the guide unit 211 in the left-to-right direction).

[0045] As shown in FIG. 6 , the movable base 5 (hatched portion with upward and downward slopes) is equipped with a sliding portion 6 (hatched portion with downward and upward slopes) as a functional portion described later, and is configured to be movable up and down within a predetermined range on the device base 4. The movement mechanism of the movable base 5 includes a guide body 43 as a component on the device base 4 side, and a slider 51 as a component on the movable base 5 side. As an example, the guide body 43 is a guide rail, and the slider 51 is a carriage that slidably engages with the guide rail, and the guide body 43 and slider 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 vertically and spaced apart in the left-right direction. The guide bodies 43 are attached to the front faces of the left and right sides of the vertical plate 400. Alternatively, the guide bodies 43 are attached to the rear face of the vertical plate 400.

[0046] The movable base 5 is moved up and down by a drive unit 44. For example, the drive unit 44 includes a motor 440, a ball screw 441, a bearing 442, and a nut 443. The motor 440 is attached to the vertical plate 400. The motor 440 is disposed so that its drive shaft extends in the vertical direction and is attached to the rear surface of the lower part of the vertical plate 400. Alternatively, the motor 440 is attached to the rear surface of the upper part of the vertical plate 400. Alternatively, the motor 440 is attached to the front surface of the vertical plate 400. The ball screw 441 is disposed so that its center line extends in the vertical direction, and one end of the ball screw 441 is connected to the drive shaft of the motor 440 via a coupling, and the other end of the ball screw 441 is rotatably supported by the bearing 442. The bearing 442 is attached to the upper plate 402. When the motor 440 is attached to the upper part of the vertical plate 400, the bearing 442 is attached to the lower plate 404. Nut 443 is attached to movable base 5 and threadedly engages with ball screw 441. In this way, ball screw 441 and nut 443 are mechanical elements that convert the rotational motion of the drive shaft of motor 440 into linear motion. When ball screw 441 rotates in one direction, nut 443 moves upward, and movable base 5 moves upward. When ball screw 441 rotates in the opposite direction, nut 443 moves downward, and 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 limit switches (hereinafter abbreviated as "LS") 450-452 equipped on the device base 4, and is installed to activate the LSs 450-452. The device base 4 is equipped with LSs 450-452 as the height position detection unit 45. The LSs 450-452 are attached to the vertical plate 400. As an example, the LSs 450-452 are attached to the rear surface of the side portion of the vertical plate 400. The actuator units of the LSs 450-452 protrude rearward and are capable of coming into contact with and separating from the cam 52 (its cam surface (inclined surface + parallel surface + inclined surface)).

[0048] LS450 is disposed at a height position that defines the middle position of the vertical movement range of movable base 5. LS451 is disposed at a height position that defines the upper limit position of the vertical movement range of movable base 5. LS452 is disposed at a height position that defines the lower limit position of the vertical movement range of movable base 5. The distance between LS450 and LS451 and the distance between LS450 and LS452 are set to be the same. LS450-452 are attached so that their positions can be adjusted in the vertical direction.

[0049] In this way, the vertical movement range of the movable base 5 is determined by the LSs 451 and 452, and the sequence is set so that the movable base 5 cannot move any further. However, just in case, stoppers 46 are provided. The upper stopper 46 is attached to the underside of the upper plate 402, and the lower stopper 46 is attached to the top 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 rearward. The mounting plate 53 is a sufficiently rigid metal plate having a rectangular shape that is long in the vertical direction and a predetermined width in the horizontal direction. A box 54 and a base frame 55 are attached to the outer surface of the mounting plate 53. The box 54 is for accommodating a control unit and a power source (battery). The base frame 55 is for placing the air compressor 60 on. These components (the sparsely hatched area extending upward to the right) move vertically together with the movable base 5 (the densely hatched area extending upward to the right).

[0051] As shown in FIG. 7( a), the movable base 5 includes a housing 50. The housing 50 includes an upper plate 500, a lower plate 501, and a connecting member 502. The upper plate 500 and the lower plate 501 are each arranged along a horizontal plane and are made of sufficiently rigid metal plates. The upper plate 500 and the lower plate 501 are arranged parallel to each other with a gap between them in the up-down direction. The connecting member 502 is a strip-shaped metal plate that is elongated vertically in the up-down direction, has a predetermined width in the front-to-back direction, and is sufficiently rigid. 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 has a rectangular frame shape when viewed from the front-to-back direction. The upper plate 500, the lower plate 501 and the two connecting members 502, 502 have lightening holes at multiple locations for weight reduction, to the extent that the strength is not affected.

[0052] The grinding unit 6 provided as a functional unit of the main device 3A is mounted on the movable base 5. The movable base 5 is disposed in the space within the frame of the housing 50. The grinding unit 6 is provided with rotary grindstones 613, 613, 633 that can be brought into contact with and separated from the surface of the guide portion 211 of the guide rail 2, and in the operating mode, by rotating the rotary grindstones 613, 613, 633 and bringing them into contact with the surface of the guide portion 211, the grinding unit 6 has the function of grinding and grinding the surface of the guide portion 211 as the movable base 5 moves up, down, or up and down.

[0053] The lapping section 6 includes three polishing units 61, 61, 63 and three drive units 62, 62, 64. The two polishing units (guide surface polishing units) 61, 61 are configured as 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 are units for polishing the guide surface 211a of the guide section 211. The other polishing unit (front end surface polishing unit) 63 is a unit for polishing the front end surface 211b of the guide section 211. The guide surface polishing unit 61 is supported by the drive unit 62, and the front end surface polishing unit 63 is supported by the drive unit 64. The drive units 62, 64 are attached to the movable base 5. As an example, the drive unit 62 is attached to the upper plate 500 of the housing 50, and the drive unit 64 is attached to the lower plate 501 of the housing 50.

[0054] 7(b), the grindstone 613 of the right guide surface polishing unit 61A has a grindstone surface at its end face that is releasably contactable with one guide surface 211a. The grindstone surface of the left guide surface polishing unit 61B has a grindstone surface at its end face that is releasably contactable with the other guide surface 211a. The grindstone surface of the rotary grindstone 633 of the tip surface polishing unit 63 has a grindstone surface at its end face that is releasably contactable with the tip surface 211b.

[0055] As shown in FIG. 8, the guide surface polishing unit 61 includes a base 610 , a motor 611 , a grindstone holder 612 , a rotary grindstone 613 , and a belt 614 .

[0056] The base 610 is a strip-shaped metal plate that is long in the front-rear direction, has a predetermined width in the up-down direction, and is sufficiently rigid. The motor 611 is attached to the base end of the base 610 with its drive shaft aligned in the left-right direction. The grindstone holder 612 is attached to the tip end of the base 610 so as to be rotatable about the left-right direction. The grindstone holder 612 has an end face that is perpendicular to the rotation axis. The belt 614 is wound around a pulley attached to the drive shaft of the motor 611 and a pulley attached coaxially to the grindstone holder 612.

[0057] The rotary grindstone 613 has a disk or cylindrical shape and is detachably attached to the end face of the grindstone holder 612. The rotary grindstone 613 has a peripheral surface around the rotation axis of the grindstone holder 612 and an end face perpendicular to the rotation axis of the grindstone holder 612. The peripheral surface and end face have abrasive grains and form a grindstone surface. The end face is annular or circular. The rotary grindstone 613 rotates on a vertical plane parallel to the guide surface 211a of the guide rail 2 as the grindstone 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 the guide surface polishing unit 61 contacts the guide surface 211a of the guide rail 2 and a non-operating mode in which the guide surface polishing unit 61 is separated from the guide surface 211a. The drive unit 62 includes a linear guide 620 and an air cylinder 621 as an air-driven actuator.

[0059] The linear guide 620 is attached to 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 a carriage. This allows the two guide surface polishing units 61, 61 to move left-right so as to narrow or widen the gap between them.

[0060] The air cylinder 621 is supplied with compressed air from the air compressor 60 via a first port and a second port. The guide surface polishing unit 61 moves on the outward path to the operating mode by the piston advancing action of the air cylinder 621, which is operated by receiving the supply of compressed air from the first port, and moves on the return path to the non-operating mode by the piston retracting action of the air cylinder 621, which is operated by receiving 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 in the left-right direction, and are arranged symmetrically in the left-right direction with the front-to-back direction as the center.

[0062] The tip surface polishing unit 63 includes a base 630 , a motor 631 , a grindstone holder 632 , and a rotary grindstone 633 .

[0063] The base 630 is a metal block with a recess in one portion. The motor 631 is disposed so that its drive shaft extends in the front-to-rear direction and is attached to the rear of the base 630. The grindstone holder 632 is attached to the front of the base 630 so that it can rotate around the front-to-rear direction, and is connected to the drive shaft of the motor 631 directly or indirectly via a coupling. The grindstone holder 632 has an end face that is perpendicular to the rotation axis.

[0064] The rotary grindstone 633 has a disk or cylindrical shape and is detachably attached to the end face of the grindstone holder 632. The rotary grindstone 633 has a peripheral surface around the rotation axis of the grindstone holder 632 and an end face perpendicular to the rotation axis of the grindstone holder 632. The peripheral surface and end face have abrasive grains and form a grindstone surface. The end face is annular or circular. The rotary grindstone 633 rotates on a vertical plane parallel to the tip surface 211b of the guide rail 2 as the grindstone 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 the tip surface polishing unit 63 contacts the tip surface 211b of the guide rail 2 and a non-operating mode in which the tip surface polishing unit 63 is separated from the tip surface 211b. The drive unit 64 includes a linear guide 640 and an air cylinder 641 as an air-driven actuator.

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

[0067] The air cylinder 641 is supplied with compressed air from the air compressor 60 via a first port and a second port. The tip surface polishing unit 63 moves on the way to the operating mode by the piston advancing operation of the air cylinder 641, which is operated by receiving the supply of compressed air from the first port, and moves on the way back to the non-operating mode by the piston retracting operation of the air cylinder 641, which is operated by receiving the supply of compressed air from the second port.

[0068] The three air cylinders 621, 621, 641 receive a supply of compressed air from one air compressor 60. As an example, the compressed air supply line from one air compressor 60 to the three air cylinders 621, 621, 641 is branched off from one main line into three lines, which are connected to each air cylinder. A pressure switch is provided in the main line, and compressed air is supplied from the air compressor 60 until the pressure reaches the pressure set by the pressure switch.

[0069] If a remotely operable solenoid valve is provided in each branch line and each air cylinder can be individually controlled to turn on and off, the operation (grindstone contact) and deactivation (grindstone separation) of the two guide surface polishing units 61, 61 and the leading edge surface polishing unit 63 can be controlled independently for each polishing unit. Furthermore, if a regulator is provided in each branch line and the pressure in each branch line can be adjusted, the contact pressure (pressing force) of each of the rotary grindstones 613, 613, 633 can be adjusted independently. Otherwise, the operation (grindstone contact) and deactivation (grindstone separation) of the two guide surface polishing units 61, 61 and the leading edge surface polishing unit 63 are controlled synchronously.

[0070] If a driver unit is provided in each drive circuit of the three motors 611, 611, 631 and each motor can be individually controlled to turn on and off, the operation (rotation of grindstone) and deactivation (stop of grindstone rotation) 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, the rotation speed (grinding speed) of each rotating grindstone 613, 613, 633 can be adjusted independently. Otherwise, the operation (rotation of grindstone) and deactivation (stop of grindstone rotation) of the two guide surface polishing units 61, 61 and the tip surface polishing unit 63 are controlled synchronously.

[0071] As shown in FIG. 9, the main unit 3A further includes a step detection unit 65 as a functional unit. The step detection unit 65 detects steps that occur between the two guide surfaces 211a and between the two tip surfaces 211b of the two guide units 211 at the connecting portions of both ends of the upper and lower guide rails 2 during the movement of the main unit 3A on the guide rail 2. The step detection unit 65 includes three reflective laser displacement sensors 650, 650, and 652. Two of the sensors 650 measure the distance to the guide surface 211a. The other sensor 652 measures the distance to the tip surface 211b. If a step occurs, the measurement value changes discontinuously, allowing the step to be detected. As the step detection unit, various known non-contact or contact detection means can be used, in addition to a laser displacement sensor (distance measurement means).

[0072] The two sensors 650, 650 are each attached to the movable base 5 via a bracket 651, and the sensor 652 is attached to the movable base 5 via a bracket 653. As an example, the three brackets 651, 651, 653 are attached to the upper surface of the upper plate 500 of the housing 50. The two brackets 651, 651 are attached so that their positions can be adjusted in the left-right direction.

[0073] 10, the control unit 30A of the main device 3A controls the entire fitting device 3, including controlling the operation and non-operation of the fitting unit 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 fitting unit 6, and a driver unit 302 for the three air cylinders 621, 621, and 641 of the fitting unit 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 and off. The stop switch 311 is a switch that is effective in the automatic operation mode and is a switch that stops the traveling of the main unit 3A. The up switch 312 is a switch that is effective in the manual operation mode and is a switch that issues a hoisting command to the lifting machine 3B. The down switch 313 is a switch that is effective in the manual operation mode and is a switch that issues a hoisting command to the lifting machine 3B. The up switch 314 is a switch that is effective in the manual operation mode and is a switch that issues an up operation command to the motor 440 of the drive unit 44. The down switch 315 is a switch that is effective in the manual operation mode and is a switch that issues a down operation command to the motor 440 of the drive unit 44. The automatic / manual changeover switch 316 is a switch that selects whether the main unit 3A is in the automatic operation mode or the manual operation mode. The grinding ON / OFF changeover switches 317 to 319 are switches that are effective in the manual operation mode, and are switches that individually select whether the right guide surface grinding unit 61A, the left guide surface grinding unit 61B, and the tip surface grinding unit 63 of the grinding section 6 are in operation mode or in operation mode.

[0075] A transmitter / receiver 320 is connected to the control unit 30A. The transmitter / receiver 320 functions as a transmitter that transmits a hoisting command (a signal related to the command) and a lowering command (a signal related to the command) for the lifting machine 3B to a receiver 340 of the lifting machine 3B. The transmitter / receiver 320 functions as a receiver that receives an operation command (a signal related to the command) for the functional units of the main unit 3A from a remote control (remote control device) described later. As an example, the transmitter / receiver 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 a function of receiving a hoisting command (a signal related to the hoisting command) and a lowering command (a signal related to the hoisting command) from the transmitting / receiving unit 320. As an 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 has a plug that is compatible with the pendant switch mounting unit of the lifting machine 3B, and by removing the pendant switch from the lifting machine 3B and mounting the receiver instead, the lifting machine 3B itself can be used without modification.

[0077] When the control unit 30B receives a winding command (signal related to the winding command) or a lowering command (signal related to the winding command) from the transceiver unit 320, it releases the brake 351 via the driver 331 and drives the motor 350 in the forward or reverse direction via the driver 330 to wind up or lower the wire. When the control unit 30B no longer receives the winding command (signal related to the winding command) or the lowering command (signal related to the winding command), 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 operated by the main unit 3A. Note that the lifting machine 3B may receive a winding command (signal related to the winding command) or a lowering command (signal related to the winding command) from a remote controller and be remotely operated by the remote controller.

[0078] 11(a), the switches of the main device 3A are arranged on an operation panel and are operated by an operator. The operation panel is provided on the surface of the box 54 of the movable base 5, for example.

[0079] As shown in FIG. 11(b), the remote control has switches similar to those on the main unit 3A. The start switch is not on the main unit 3A, but is only on the remote control, and 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 moves out of the worker's reach and the worker is unable to press the stop switch 311, as long as the worker holds the remote control in his or her hand from the start of automatic operation, the stop switch on the remote control can be pressed immediately. However, if there are no such concerns, the start switch may be provided on the operation panel of the main unit 3A.

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

[0081] (Step 1) The worker moves to the top of the elevator shaft 1 by gondola, and installs the lifting machine 3B equipped with the 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 bottom of the elevator shaft 1 in a gondola.

[0083] (Step 3) The operator connects an external power supply to the main unit 3 A. Note that if the power supply (battery) installed in the main unit 3 A is used, step 3 is not required.

[0084] (Step 4) The worker winds down the wire 31B of the crane 3B, hooks the hook 32B onto the main unit 3A, and takes the main unit 3A into the hoistway 1 as it is.

[0085] (Step 5) The worker installs the main unit 3A on the lowest guide rail 2 and installs 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, which starts automatic operation. Note that when automatic operation starts, the movable base 5 is located at the middle position of 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 end 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 the hoisting command to the lifting machine 3B that it had been issuing and stops itself. The detected step size is stored in the storage unit (memory) of the control unit 30A. The predetermined time refers to the time it takes for the grinding wheels 613, 613, 633 to stop at the joint positions of the connecting portions at both ends of the upper and lower guide rails 2, 2 (including the position where the step occurs and the vicinity thereof) (see Figure 6) when the movable base 5 is located at the intermediate position.

[0089] (Operation 9) The main device 3A issues an up-and-down movement command to the motor 440 of the drive unit 44 while controlling the operation and non-operation of the three grinding units 61, 61, 63 of the lapping unit 6, for example, in one of the following patterns a to d. As a result, the rotary grindstones 613, 613, 633 grind (polish) the surface of the guide portion 211 of the guide rail 2 within a predetermined range spanning the joints at 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, which has a step as its intermediate position, is divided into an upper side and a lower side with the step as its boundary and then aligned. 1) For either the upper or lower processing area, 1-1) the polishing unit corresponding to the surface that protrudes due to the step is put into operation mode (grinding wheel rotation + grinding wheel contact), 1-2) the polishing unit corresponding to the surface that recedes due to the step is put into non-operation mode (grinding wheel rotation stopped + grinding wheel separated), and 1-3) an up / down movement command is issued for the number of round trips according to the amount of the step (one round trip is an up movement command to the upper limit position → a down movement command to the intermediate position, or a down movement command to the lower limit position → an up movement command to the intermediate position). 2) For either the upper or lower processing area, 2-1) the polishing unit corresponding to the surface that protrudes due to the step is set to operation mode (grinding stone rotation + grinding stone contact), 2-2) the polishing unit corresponding to the surface that recedes due to the step is set to non-operation mode (grinding stone rotation stopped + grinding stone separated), and 2-3) up / down movement commands are issued for the number of round trips according to the amount of step (one round trip is a downward movement command to the lower limit position → an upward movement command to the intermediate position, or an upward movement command to the upper limit position → a downward movement command to the intermediate position). 3) Re-measurement of the step amount 4) (If there are still steps remaining) Repeat steps 1 to 3

[0091] b) When the processing area, with the position where the step occurs as the intermediate position, is adjusted without dividing it into upper and lower parts with the position where the step occurs as the boundary. 1) 1-1) Issue up / down movement commands for the number of cycles according to the amount of step (one cycle is an up movement command to the upper limit position → a down movement command to the lower limit position → an up movement command to the intermediate position, or a down movement command to the lower limit position → an up movement command to the upper limit position → a down movement command to the intermediate position), 1-2) For each of the upper and lower processing areas, the polishing units corresponding to the surfaces that protrude due to the step are in operation mode (grinding wheel rotation + grinding wheel contact), 1-3) For each of the upper and lower processing areas, the polishing units corresponding to the surfaces that recede due to the step are in operation mode (grinding wheel rotation stopped + grinding wheel separated). 2) Re-measurement of the step amount 3) (If there are still steps remaining) Repeat steps 1 and 2

[0092] c) One or more up / down movement commands for the upper or lower processing area (regardless of the step amount) d) One or more cycles of vertical movement command for the entire processing area (regardless of the step amount)

[0093] Here, the stroke of the movable base 5 during multiple reciprocating motions or multiple cycles is constant regardless of the number of reciprocating motions or cycles, as shown in Figure 12(a). However, as shown in Figure 12(b), it is also possible to employ control in which the stroke is gradually shortened (by a fixed amount or according to a pattern previously stored in the memory of the control unit 30A) as the number of reciprocating motions or cycles increases. Also, as shown in Figure 12(c), it is also possible to employ control in which the contact pressure of the grinding wheels 613, 613, 633 increases toward the step.

[0094] (Operation 10) When the main device 3A has completed the fitting process for the relevant portion, it puts the fitting unit 6 into the non-operating mode.

[0095] The main device 3A repeats operations 7 to 10 to perform alignment up to the uppermost guide rail 2.

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

[0097] This completes the alignment of one row of guide rails 2. When alignment of another row of guide rails 2 is to be performed, the worker switches the main device 3A and repeats the same process.

[0098] As described above, the fitting 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 fitting of the surface of the guide portion 211 within a predetermined range. Therefore, the fitting device 3 according to this embodiment can effectively reduce processing time compared to when fitting is performed over the entire length of the guide rail 2.

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

[0100] The lapping device 3 according to this embodiment further includes a tip surface polishing unit 63 having a rotary grindstone 633 that corresponds to the tip surface 211b of the surface of the guide portion 211. Therefore, the lapping device 3 according to this embodiment can automatically and highly accurately lapping the entire surface of the guide portion 211.

[0101] According to the lapping device 3 of this embodiment, when the movable base 5 is positioned at the middle position of its vertical movement range, the rotary grindstones 613, 633 stop at the position where the step occurs and perform lapping. As a result, in the processing area with the position where the step occurs as the middle position, the processing area above and below the position where the step occurs become equal in range. Therefore, according to the lapping device 3 of this embodiment, it is possible to perform uniform lapping without any bias between the top and bottom.

[0102] According to the lapping device 3 of this embodiment, the surface of the guide portion 211 is polished by the grinding wheel surfaces of the end faces of the rotary grindstones 613, 633. Therefore, according to the lapping device 3 of this embodiment, it is possible to preferably prevent poor precision of the machined surface (tilt of the machined surface) caused by axial tilt of the rotary grindstones 613, 633.

[0103] The fitting device 3 according to this embodiment is provided with a lifting machine 3B that suspends and supports the device base 4 as a drive unit for the device base 4. Therefore, according to the fitting device 3 according to this embodiment, the weight of the main device 3A can be reduced, which in turn reduces the work effort and enables the fitting process to be performed efficiently.

[0104] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the present invention.

[0105] In the above embodiment, an example of fitting the guide rails 2 for a car has been described. However, the present invention is not limited to this. It goes without saying that the fitting device can also be used when fitting the guide rails for a counterweight.

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

[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 the means for moving the movable base 5 up and down. However, the present invention is not limited to this. Various known means can be used to move the movable base up and down, such as a hydraulic cylinder, an air cylinder, a rope wound around a sheave, or a pinion-rack combination.

[0108] In the above embodiment, limit switches 450-452 on the device base 4 and limit switch cam 52 on the movable base 5 are used as means for detecting the height position of the movable base 5. However, the present invention is not limited to this. Various known means can be used to detect 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 LSs 450-452 are used to define the middle, upper, and lower limit positions of the vertical movement range of the movable base 5, enabling the movable base 5 to perform cyclical movements. However, the present invention is not limited to this. For example, as shown in FIG. 13 , LS 452 may be eliminated, and the upper and lower limit positions of the vertical movement range of the movable base 5 may be defined, allowing the movable base 5 to perform only reciprocating movements. In this case, a processing area with a step at its middle position may be divided into upper and lower sections by the step position and then aligned. After completing alignment of either the upper or lower processing area, the main unit 3A is moved and alignment of the other processing area is performed. This configuration allows the overall height of the device base 4 to be shortened, and the main unit 3A of the alignment device 3 to be lighter.

[0110] In the above embodiment, grinding is performed on the end surfaces of the grindstones 613, 633. However, the present invention is not limited to this. As shown in FIG. 14, grinding may be performed on the circumferential surfaces of the grindstones 613, 633. Note that FIG. 14(a) shows an example in which the width of the grindstone 613 is greater than the width of the guide surface 211a of the guide portion 211 of the guide rail 2, and FIG. 14(b) shows an example in which the width of the grindstone 613 is smaller than the guide surface 211a. In the latter case, grinding is performed in multiple stages in the front-to-rear direction.

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

[0112] In the above embodiment, a laser displacement sensor is used as a detector that detects that the main device 3A has reached a position where a step occurs on the surface of the guide portion 211 of the guide rail 2 during its movement on the guide rail 2. However, the present invention is not limited to this. Various configurations can be adopted as the detector, including the following configurations a to f. Note that the following configurations a to c, e, and f do not necessarily indicate a step. In this case, strictly speaking, the detector detects that the main device 3A has reached a position where a step may occur. a) The main unit is equipped with a detection means such as a sensor that detects the position of the guide rail joints. b) The main unit is equipped with a detection means such as a sensor that detects the connecting material (battens) or the fasteners (batten bolts) of the connecting material. c) The control unit of the main device stores information about the number of joints of the guide rail in advance, and when that number is reached, ends the fitting process. d) The control unit of the main device stores information about the total length of one row of guide rails in advance, and when the cumulative travel distance of the main device (the travel speed is known from the specifications of the lifting machine, and the travel distance is calculated from the measured values ​​of the travel speed and travel time) reaches the total length minus the allowance, the fitting process is completed. e) The control unit of the main device stores the position information of the joints of the guide rails in advance, and determines the stopping position based on this position information. f) The control unit of the main device stores information about 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 the limit switch 410 and the limit switch cams 10, 11 is used as the means for determining the upper and lower limit positions of the main device 3A. However, the present invention is not limited to this. For example, a non-contact sensor (such as a photoelectric sensor) may be used, or the main device may be provided 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 adjustment process is performed when the main unit 3A ascends toward the upper limit position. However, the present invention is not limited to this. The adjustment process may be performed when the main unit descends toward the lower limit position.

[0115] In the above embodiment, the main unit 3A and the lifting machine (auxiliary unit) 3B are used in a one-to-one relationship. However, the present invention is not limited to this. As shown in FIG. 15, a main unit 3A is attached to each of the two guide rails 2, 2 arranged in a one-to-two arrangement, and the two main units 3A, 3A are connected together with a connecting member 33. A hook is attached to (the center of) the connecting member 33, and one lifting machine 3B is used to raise and lower the two main units 3A, 3A, thereby simultaneously processing the two guide rails 2, 2 arranged in a one-to-two arrangement. This not only shortens processing time and reduces processing costs, but also has the advantage of allowing the use of a lifting machine that is originally installed between the two guide rails 2, 2, rather than preparing and installing a lifting machine specifically for the main unit 3A.

[0116] In the present invention, terms that specify a shape, part, state, or direction, such as "rectangular," "straight line," "center," "central," "edge," "side," "even," "same," "parallel," "orthogonal," "up and down," "front and back," and "left and right," include not only the term itself, but also the concept of "approximately" meaning something close to or similar to it. Furthermore, "middle" is a term that does not mean the center of a range, but a position anywhere between the ends of a range. [Explanation of symbols]

[0117] DESCRIPTION OF SYMBOLS 1...hoistway, 1a...wall surface, 10...upper limit switch cam, 11...lower limit switch cam, 2...guide rail, 20...base, 21...protruding portion, 210...connecting portion, 211...guide portion, 211a...guide surface (first guide surface, second guide surface), 211b...tip surface, 22...convex strip, 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 alignment device, 3A...main device, 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...flip-fit ​​ON / OFF changeover switch, 320...transmitter / receiver unit, 3B...lifting machine (auxiliary device), 30B...control unit, 330, 331...driver unit, 340...receiving unit, 350...motor, 351...brake, 31B...wire rod, 32B...hook, 33...connecting material, 4...device base, 40...casing, 400...vertical plate, 401...reinforcement material, 402...upper plate, 403...engaged portion, 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 portion, 424, 425...resilient force applying 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 to 452...limit switch, 46...stopper, 5...movable base, 50...casing, 500...upper plate, 501...lower plate, 502...connecting material, 51...sliding body, 52...limit switch cam, 53...mounting plate, 54...box, 55...base frame, 6...sliding portion, 60...air compressor, 61...guide surface polishing unit, 61A...right guide surface polishing unit ( First guide surface polishing unit), 61B...left guide surface polishing unit (second guide surface polishing unit), 610...base, 611...motor, 612...grinding wheel holder, 613...rotary 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...rotary 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 alignment device that stops at a position where a step occurs or a position where a step may occur on the surface of a guide part of a guide rail that extends vertically in a hoistway, and performs alignment of the surface of the guide part within a predetermined range, a device base configured to be movable on a guide rail; a device-based drive; a movable base configured to be movable up and down within a predetermined range on the device base; a drive unit of a movable base; a grinding unit that is mounted on the movable base and has a rotary grindstone that can be brought into contact with and separated from the surface of the guide unit, and in an operating mode, grinds and grinds the surface of the guide unit as the movable base moves up, down, or up and down; a control unit that controls the operation and non-operation of each drive unit and each sliding unit, The control unit controls the driving unit of the movable base so that the grinding wheel moves back and forth multiple times, with one reciprocating motion being defined as an operation of moving up or down from a position where a step has occurred or a position where a step may occur, then turning around and returning to the original position, or so that the grinding wheel moves back and forth multiple times, with one cycle being an operation of moving up or down from a position where a step has occurred or a position where a step may occur, then turning around and returning to the original position, and then further moving to the opposite side, then turning around and returning to the original position, and the control unit controls the driving unit of the movable base so that the stroke becomes shorter in stages as the number of reciprocating motions or the number of cycles increases. Elevator guide rail alignment device.

2. An elevator guide rail alignment device that stops at a position where a step occurs or a position where a step may occur on the surface of a guide part of a guide rail that extends vertically in a hoistway, and performs alignment of the surface of the guide part within a predetermined range, a device base configured to be movable on a guide rail; a device-based drive; a movable base configured to be movable up and down within a predetermined range on the device base; a drive unit of a movable base; a grinding unit that is mounted on the movable base and has a rotary grindstone that can be brought into contact with and separated from the surface of the guide unit, and in an operating mode, grinds and grinds the surface of the guide unit as the movable base moves up, down, or up and down; a control unit that controls the operation and non-operation of each drive unit and each sliding unit, The control unit controls the driving unit of the movable base so that the grinding wheel performs one or more reciprocating movements, with one reciprocating movement being defined as an operation in which the grinding wheel moves up or down from a position where a step has occurred or a position where a step may occur, then reverses and returns to the original position, or so that the grinding wheel performs one or more cycles, with one cycle being an operation in which the grinding wheel moves up or down from a position where a step has occurred or a position where a step may occur, then reverses and returns to the original position, and then further moves to the opposite side, then reverses and returns to the original position, and the control unit controls the operation of the grinding unit so that the contact pressure of the grinding wheel increases the closer it is to the position where a step has occurred or a position where a step may occur. Elevator guide rail alignment device.

3. the grinding unit includes a first guide surface grinding unit having a grindstone corresponding to a first guide surface of two guide surfaces of the guide unit, and a second guide surface grinding unit having a grindstone corresponding to the second guide surface; The control unit controls the operation and non-operation of the first guide surface polishing unit and the second guide surface polishing unit independently or synchronously.

3. The elevator guide rail alignment device according to claim 1 or 2.

4. the grinding unit further includes a tip surface grinding unit having a grindstone corresponding to the tip surface of the surface of the guide unit; The control unit 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 independently or synchronously.

4. The elevator guide rail alignment device according to claim 3.

5. The control unit controls the operation and non-operation of the two guide surface polishing units so that the guide surface polishing unit corresponding to the surface of the two guide surfaces that protrudes due to the step is in the operation mode, and the guide surface polishing unit corresponding to the surface of the two guide surfaces that is recessed due to the step is in the non-operation mode.

4. The elevator guide rail alignment device according to claim 3.

6. The control unit controls the operation and non-operation of the two guide surface grinding units so that the operation mode and non-operation mode are switched when the rotating grinding wheel passes through a position where a step occurs during cycle operation.

6. The elevator guide rail alignment device according to claim 5.

Images