Elevator guide-rail centering device

Abstract

To provide an elevator guide-rail centering device capable of suitably preventing the guide surface of a guide-rail from being damaged in a centering work.SOLUTION: A guide-rail centering device 5 comprises a vertical frame 50 having a first abutting surface 50a abutting against one guide surface 204 of a guide-rail 20 and a clamp 52 applying the pressing force to the other guide surface 204 of the guide-rail 20. The clamp 52 comprises a base 53 integrated with the vertical frame 50 and a fastening tool 54 supported by the base 53. The fastening tool 54 comprises a screw shaft body 540 located on a perpendicular line of the first abutting surface 50a and a pressing force member 543 having a second abutting surface 543 abutting against the other guide surface 204 of the guide-rail 20. The pressing force member 543 can relatively rotate around the axis with respect to the screw shaft body 540 and can tilt with respect to the shaft of the screw shaft body 540.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to an elevator guide rail centering device for eliminating steps at the joints of guide rails. [Background technology]

[0002] An example of this type of guide rail centering device is described in Patent Document 1. This device comprises a vertical frame (stretching member 6) having a first abutment surface that abuts against one guide surface of the guide rail, and a clamp that applies a pressing force to the other guide surface of the guide rail, the clamp comprising a base (frames 7-9) integrated with the vertical frame and a fastener supported by the base, and the fastener comprising a threaded shaft (fastening bolt 11) positioned on a line perpendicular to the first abutment surface, and a pressing member (pressing member 12) having a second abutment surface that abuts against the other guide surface of the guide rail. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-2555 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the device described in Patent Document 1, the pressing member is provided integrally with the screw shaft. Therefore, when the fastener is tightened, the pressing member rotates integrally with the screw shaft, which may damage the guide surface of the guide rail.

[0005] Furthermore, if the pressing member is tilted relative to the axis of the screw shaft body due to manufacturing errors in the device or deformation during use, the pressing member may come into partial contact with the other guide surface of the guide rail when the fastener is tightened, potentially damaging the guide surface.

[0006] Therefore, the present invention has been made in consideration of such circumstances, and its objective is to provide an elevator guide rail centering device that can effectively prevent the guide surface of the guide rail from being damaged during centering work. [Means for solving the problem]

[0007] The elevator guide rail centering device according to the present invention comprises: An elevator guide rail centering device for eliminating a step at a connecting portion of a guide rail having two guide surfaces positioned in a thickness direction and a tip surface positioned between tip edges of the two guide surfaces in a width direction, a vertical frame having a first contact surface that contacts one guide surface of the guide rail; a clamp that applies a pressing force to the other guide surface of the guide rail, The clamp includes a base that is integrated with the vertical frame and a fastener that is supported by the base; The fastener includes a screw shaft located on a line perpendicular to the first contact surface and a pressing member having a second contact surface that contacts the other guide surface of the guide rail, The pressing member is rotatable about its axis relative to the screw shaft body and is tiltable relative to the axis of the screw shaft body. This is an elevator guide rail centering device.

[0008] As one aspect of the elevator guide rail centering device according to the present invention, the base has a third abutment surface that abuts against the tip end surface of the guide rail; When the third contact surface is in contact with the tip end surface of the guide rail, the entire second contact surface of the pressing member is configured to contact the other guide surface of the guide rail. The above configuration can be adopted.

[0009] As one aspect of the elevator guide rail centering device according to the present invention, The vertical frame is a square timber having a first surface which is a first contact surface, a second surface which is parallel to and faces the first surface and contacts the base, a third surface which is perpendicular to the first and second surfaces and contacts the base, and a fourth surface which is parallel to and faces the third surface. The above configuration can be adopted.

[0010] As one aspect of the elevator guide rail centering device according to the present invention, The vertical frame is a long member extending along the longitudinal direction of the guide rail, The clamps are provided at a plurality of locations in the longitudinal direction of the vertical frame, a proximal end surface of the base of each clamp is located on a first plane, and a distal end surface of the base of each clamp is located on a second plane parallel to the first plane; The fourth surface of the vertical frame is located substantially in the second plane. The above configuration can be adopted.

[0011] As one aspect of the elevator guide rail centering device according to the present invention, One or both of the second surface and the third surface of the vertical frame has a T-slot or a dovetail groove; The base is fixed to the vertical frame using a T-slot or dovetail and fasteners. The above configuration can be adopted.

[0012] As one aspect of the elevator guide rail centering device according to the present invention, Equipped with a handle that can be attached to the vertical frame The above configuration can be adopted. [Effects of the Invention]

[0013] According to the present invention, even if the screw shaft rotates about its axis when the fastener is tightened, the pressing member abuts against the guide surface of the guide rail without rotating relative to the screw shaft, and the second abutment surface of the pressing member is in surface contact with the guide surface of the guide rail. Therefore, according to the present invention, the guide surface of the guide rail can be suitably prevented from being damaged during the centering operation. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a perspective view of an elevator. [Figure 2] FIG. 2 is a perspective view of the guide rail centering device attached to the guide rail, as viewed from the front left. [Figure 3] FIG. 3 is a perspective view of the guide rail centering device attached to the guide rail, as viewed from the front right. [Figure 4] FIG. 4 is a horizontal cross-sectional view of the guide rail centering device taken along line AA in FIG. [Figure 5] Figure 5(a) is a horizontal cross-sectional view of the vertical frame of the guide rail centering device, and Figure 5(b) is a horizontal cross-sectional view of the guide rail centering device at the handle. [Figure 6] Figure 6(a) is a plan view of the clamp of the guide rail centering device, Figure 6(b) is a horizontal cross-sectional view of the clamp, and Figure 6(c) is a side view of the clamp. [Figure 7] FIG. 7 is a horizontal cross-sectional view of the guide rail centering device at a location above the clamp. [Figure 8] FIG. 8 is a horizontal cross-sectional view of the guide rail centering device according to Alternative Embodiment 1 at a location above the clamp in a state where the guide rail centering device is attached to the guide rail. [Figure 9] FIG. 9 is a horizontal cross-sectional view of the guide rail centering device according to Alternative Embodiment 2 at a location above the clamp in a state where the guide rail centering device is attached to the guide rail. DETAILED DESCRIPTION OF THE INVENTION

[0015] <Overall elevator configuration> The elevator guide rail centering device will be described below, but first the overall configuration of the elevator will be described.

[0016] As shown in Figure 1, elevator 1 includes hoistway 2, car 3, and drive mechanism 4 for car 3. Hoistway 2 extends vertically in a multi-story building. Driven by drive mechanism 4, car 3 moves up and down within hoistway 2, and stops at a designated floor when drive mechanism 4 is stopped.

[0017] A pair of guide rails 20, 20 and a pair of guide rails 21, 21 are provided in the elevator shaft 2. The pair of guide rails 20, 20 are arranged to extend in the vertical direction on both sides of the car 3. The pair of guide rails 21, 21 are arranged to extend in the vertical direction on both sides of the counterweight 41.

[0018] Guide bodies 30 such as guide shoes or roller guides are attached to four locations on the top, bottom, left and right sides of the car 3. The guide bodies 30 slide on the pair of guide rails 20, 20, so that the car 3 can move up and down within the hoistway 2 while being guided by the pair of guide rails 20, 20.

[0019] The drive mechanism 4 includes a hoisting machine 40, a counterweight 41, and a main rope 42. The hoisting machine 40 is disposed in a pit 2A of the hoistway 2. The counterweight 41 is disposed in a space formed between the wall surface of the hoistway 2 and the car 3, and is guided by a pair of guide rails 21, 21 to be able to move up and down within the hoistway 2. One end of the main rope 42 is fixed to the upper part of the hoistway 2, and is wound around appropriate sheaves including a drive sheave (sheave) of the hoisting machine 40, and the other end is fixed to the upper part of the hoistway 2. The drive sheave of the hoisting machine 40 is driven to rotate, causing the main rope 42 to run, and as a result, the car 3 and counterweight 41 move up and down within the hoistway 2 in opposite directions.

[0020] As shown in FIGS. 2 to 4, guide rail 20 has a T-shape in plan view and includes a base 200 and a protruding portion 201. Guide rail 21 has a different size, but has the same configuration as guide rail 20. Base 200 is in the form of a strip extending in the vertical direction, and is attached to the wall of hoistway 2 or a support such as a frame attached to the wall of hoistway 2 by a plurality of brackets or clips (not shown) arranged at appropriate intervals in the vertical direction. Protruding portion 201 is in the form of a strip extending in the vertical direction, and is connected at one side to the center of base 200 and protrudes perpendicularly from base 200.

[0021] The protruding portion 201 includes a connecting portion 202 and a guide portion 203. The connecting portion 202 connects the base portion 200 and the guide portion 203. The connecting portion 202 is thinner than the guide portion 203 and forms a constricted portion in the protruding portion 201. The guide portion 203 has two guide surfaces 204, 204 and a tip surface 205. The two guide surfaces 204, 204 are surfaces located in the thickness direction of the guide portion 203 and are parallel to each other or tapered so that the thickness decreases toward the tip. The guide surface 204 is a surface against which the guide body 30 of the car 3 slides and guides the guide body 30. The tip surface 205 is a surface located between the widthwise tip edges of the two guide surfaces 204, 204 and is a flat surface or a curved surface such as an arc surface.

[0022] The guide rails 20 have an appropriate length, and are extended in the vertical direction by connecting the ends of the two guide rails 20, 20 via connecting members 22 such as battens. The connecting members 22 are plate-shaped and are placed against the backs of both ends (bases 200) of the two upper and lower guide rails 20, 20, spanning both ends. A plurality of screw holes or through holes are formed in the upper and lower half regions of the connecting member 22, and through holes corresponding to the holes are formed in the ends of the guide rails 20. As a result, the guide rails 20 and the connecting members 22 are joined using fasteners 23 such as bolts (and nuts), and the two upper and lower guide rails 20, 20 are connected via the connecting members 22.

[0023] <Configuration of guide rail centering device> The guide rail centering device (hereinafter simply referred to as "centering device") 5 will be described below. The size of each part of the centering device 5 is specified so that one device can be used for both the guide rails 20 and 21. In the following, the thickness direction of the guide portion 203 of the guide rail 20, i.e., the left-right direction when viewed from the front, and the direction in the centering device 5 corresponding to this direction will be referred to as the first direction X, the protruding direction of the guide portion 203, i.e., the front-rear direction when viewed from the front, and the direction in the centering device 5 corresponding to this direction will be referred to as the second direction Y, and the longitudinal direction of the guide portion 203 (guide rail 20), i.e., the up-down direction, and the direction in the centering device 5 corresponding to this direction will be referred to as the third direction Z. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0024] The centering device 5 is a device for eliminating steps at the joints of the guide rails 20, and includes a vertical frame 50, a handle 51, and a clamp 52. The vertical frame 50 abuts against one guide surface 204 of the guide rail 20. The clamp 52 abuts against the other guide surface 204 of the guide rail 20 and clamps the guide portion 203 of the guide rail 20 between the vertical frame 50 and the clamp 52 by tightening. As an example, three clamps 52 are provided at three locations: the upper end, the middle portion, and the lower end of the vertical frame 50. The clamp 52 at the middle portion is aligned with the joints at both ends of the two upper and lower guide rails 20, 20. As an example, two handles 51 are provided between the clamps 52, 52.

[0025] The vertical frame 50 has an appropriate length and abuts against one guide surface 204 of the guide rail 20 along the longitudinal direction (third direction Z) of the one guide surface 204. As shown in FIG. 5(a), the vertical frame 50 is a square timber having a first surface 50a, a second surface 50b, a third surface 50c, and a fourth surface 50d. Adjacent surfaces are perpendicular to each other. Opposing surfaces are parallel to each other. The first surface 50a is a surface (first abutment surface) that abuts against one guide surface 204. A T-slot 500 is formed in each of the second surface 50b and the third surface 50c. The T-slot 500 is formed along the longitudinal direction of the vertical frame 50. As an example, the vertical frame 50 is an extruded aluminum material.

[0026] As shown in FIG. 5(b), the handle 51 is detachably attached to the vertical frame 50 using a fastener. The fastener is a combination of a bolt 510 and a T-slot nut 511 (including appropriate washers, spring washers, etc., as necessary). The handle 51 (at both ends thereof) has a through-hole 51a through which the shaft of the bolt 510 is inserted. The bolt 510 is inserted into the through-hole 51a and threadedly engages with the T-slot nut 511 at its tip. The T-slot nut 511 is inserted into the T-slot 500 in the third surface 50c of the vertical frame 50. When the bolt 510 is tightened, the handle 51 is fixed to the third surface 50c of the vertical frame 50. When the bolt 510 is loosened, the handle 51 becomes slidable in the longitudinal direction of the vertical frame 50.

[0027] The clamp 52 is also detachably attached to the vertical frame 50 using a fastener. As shown in FIG. 6 , the fastener is a combination of a bolt 535 and a T-slot nut 536 (including appropriate washers, spring washers, etc., as necessary). The clamp 52 has two orthogonal through-holes 533b, 534b as insertion holes for the shaft of the bolt 535. Two bolts 535 are inserted into the two through-holes 533b, 534b and are threadedly engaged with T-slot nuts 536 at their respective tip ends. The two T-slot nuts 536 are inserted into two T-slots 500, 500 on the second surface 50b and the third surface 50c of the vertical frame 50. When the two bolts 535 are tightened, the clamp 52 is fixed to the vertical frame 50 at two orthogonal surfaces (the second surface 50b and the third surface 50c). When the two bolts 535, 535 are loosened, the clamp 52 becomes slidable in the longitudinal direction of the vertical frame 50.

[0028] The clamp 52 includes a base 53 and a fastener 54. The base 53 is a part that is integrated with the vertical frame 50. The fastener 54 is supported by the base 53 and moves in the first direction X relative to the base 53.

[0029] The base 53 includes a pair of opposing portions 530, 530, a connecting portion 531, a first connecting portion 532, a second connecting portion 533, and a third connecting portion 534. The pair of opposing portions 530, 530 face each other in the third direction Z and are parallel to each other. The connecting portion 531 connects both base end edges of the pair of opposing portions 530, 530 in the second direction Y. As an example, the base 53 is made of aluminum, and the pair of opposing portions 530, 530 and the connecting portion 531 are formed by bending a single plate material.

[0030] The pair of opposing portions 530, 530 are cut out in a rectangular shape from the distal edge to the proximal edge in the second direction Y, excluding both ends in the first direction X. The first connecting portion 532, the second connecting portion 533, and the third connecting portion 534 are each plate-shaped and connect each side of both cutout portions of the pair of opposing portions 530, 530. The first connecting portion 532 and the second connecting portion 533 face each other in parallel and are arranged along a plane perpendicular to the first direction X. The third connecting portion 534 is perpendicular to the first connecting portion 532 and the second connecting portion 533 and is arranged along a plane perpendicular to the second direction Y.

[0031] The first connecting portion 532 has a first surface 532a. The second connecting portion 533 has a second surface 533a. The third connecting portion 534 has a third surface 534a. The surfaces 532a, 533a, and 534a are flat surfaces. The first surface 532a and the second surface 533a face each other in parallel and are perpendicular to the first direction X. The third surface 534a is perpendicular to the first surface 532a and the second surface 533a and is perpendicular to the second direction Y. The third surface 534a is a surface (third abutment surface) that abuts against the tip surface 205 of the guide rail 20.

[0032] The first connecting portion 532 has a through-hole 532b as an insertion hole for the shank of the screw shaft 540 of the fastener 54. The first connecting portion 532 also has a screw holding portion 532c coaxial with the through-hole 532b. The screw holding portion 532c threadably holds the screw shaft 540. As an example, the screw holding portion 532c is a nut joined to the first surface 532a by joining means such as welding. The second connecting portion 533 has a through-hole 533b as an insertion hole for the shank of the bolt 535. The third connecting portion 534 has a through-hole 534b as an insertion hole for the shank of the bolt 535.

[0033] The fastener 54 includes a screw shaft 540 and a pressing member 543. The screw shaft 540 has a tip end portion movably provided within a recess (a space surrounded by the first surface 532a, the second surface 533a, and the third surface 534a and elongated along the first direction X) of the base 53. The pressing member 543 is provided at the tip end of the screw shaft 540.

[0034] The screw shaft 540 is a straight screw that is inserted into the through-hole 532b of the first connecting portion 532 of the base 53 and threadedly engages with the screw holding portion 532c, thereby rotating about an axis in the first direction X and moving in the first direction X. The screw shaft 540 has a length that protrudes outward from one end of the base 53 in the first direction X, and this protruding portion is provided with a rotation operation portion 541. The rotation operation portion 541 is a head portion that is located at the base end of the screw shaft 540. As an example, the screw shaft 540 and the rotation operation portion 541 are hexagonal bolts that are rotated using a tool such as a wrench.

[0035] The screw shaft 540 has a tip portion 542. The tip portion 542 is located at the tip of the screw shaft 540. The tip portion 542 has a spherical recess 542a and is a universal joint that rotatably receives the spherical protrusion 543b of the pressing member 543.

[0036] Pressing member 543 is supported by tip end 542 of screw shaft body 540, and is disposed along a plane perpendicular to first direction X. However, pressing member 543 is supported by tip end 542 of screw shaft body 540 via spherical convex portion 543b so that the angle can be freely changed, and therefore pressing member 543 is rotatable relative to screw shaft body 540 around the axis of screw shaft body 540, and is tiltable within a predetermined angle range with respect to the axis of screw shaft body 540.

[0037] 7, in a state in which a plurality of clamps 52 (three in this example) are attached to the vertical frame 50 and the vertical frame 50 and the base 53 are integrated, a first surface (first abutment surface) 50a of the vertical frame 50 is parallel to a second surface 50b of the vertical frame 50, and the second surface 50b of the vertical frame 50 abuts and comes into surface contact with a second surface 533a of the base 53. A fourth surface 50d of the vertical frame 50 is parallel to a third surface 50c of the vertical frame 50, and the third surface 50c of the vertical frame 50 abuts and comes into surface contact with a third surface (third abutment surface) 534a of the base 53. Therefore, the first surface (first abutment surface) 50a of the vertical frame 50 is perpendicular to the first direction X, and the fourth surface 50d of the vertical frame 50 and the third surface (third abutment surface) 534a of the base 53 are perpendicular to the second direction Y.

[0038] The pressing member 543 has a surface 543a facing the first surface (first abutment surface) 50a of the vertical frame 50. The surface 543a is a surface (second abutment surface) that abuts against the other guide surface 204 of the guide rail 20. The surface (second abutment surface) 543a abuts over its entire surface against the other guide surface 204 of the guide rail 20 in a state in which the third surface (third abutment surface) 534a of the base 53 abuts against the tip surface 205 of the guide rail 20. As an example, the pressing member 543 is made of a metal such as aluminum or stainless steel, and the surface 543a is circular.

[0039] A base end surface 53a (surface of the connecting portion 531) of the base 53 in the second direction Y is a flat surface. Therefore, when the plurality of clamps 52 are attached to the vertical frame 50, each base end surface 53a is located on a first plane P1. Furthermore, two tip surfaces 53b, 53b of the base 53 in the second direction Y are flush with a fourth surface 50d of the vertical frame 50, or if there is a deviation, it is within ±2 mm or ±1 mm. Therefore, when the plurality of clamps 52 are attached to the vertical frame 50, the fourth surface 50d of the vertical frame 50 and each tip surface 53b are located on a second plane P2 parallel to the first plane P1, or are located close to the second plane P2 and substantially on the second plane P2.

[0040] The depth DP of the recess of the base 53 (a long space along the first direction X surrounded by the first surface 532a, the second surface 533a, and the third surface 534a) is set to a size such that the gap (distance) GP between the second plane P2 and the surface of the base 200 of the guide rail 20 shown in Fig. 4 is 3 mm or more, or 4.5 mm or more. Inside the recess, the axis AC of the fastener 54 is set to pass through the centroid of the vertical frame 50 or its vicinity, and the pressing point of the pressing member 543 is set at a position aimed at the centroid.

[0041] <How to use the guide rail centering device> The centering work begins with the connecting members 22 temporarily fastened to both ends of the two upper and lower guide rails 20, 20. First, the fasteners 54 are loosened to make the distance between the first surface (first contact surface) 50a of the vertical frame 50 and the surface (second contact surface) 543a of the pressing member 543 wider than the thickness of the guide portion 203 of the guide rail 20.

[0042] Next, handle the centering device 5 by holding the handle 51, and insert the guide portion 203 of the guide rail 20 between the two surfaces 50a, 543a, so that the third surface (third abutment surface) 534a of the base 53 abuts against the tip surface 205 of the guide rail 20. Next, adjust the vertical position of the centering device 5 so that the position of the pressing member 543 of the intermediate clamp 52 is aligned with the joints at both ends of the two upper and lower guide rails 20, 20. Once the position of the centering device 5 is determined, temporarily tighten all of the fasteners 54. The centering device 5 is now fixed to the guide rail 20.

[0043] Next, a rotational torque is applied to the fastener 54 to tighten it completely. As a result, a pressing force is applied to the guide portion 203 of the guide rail 20, and if the two upper and lower guide rails 20, 20 are misaligned, this misalignment is corrected by the pressing force, and the step at the connecting portion of the two upper and lower guide rails 20, 20 is eliminated (linear alignment). This completes the centering operation.

[0044] Once the centering work is complete, a predetermined rotational torque is applied to the fasteners 23 of the connecting material 22 to tighten them, completing the work on this connection. This series of work is then repeated each time a new guide rail 20 is connected onto a guide rail 20 for which work has already been completed. In this way, the guide rail 20 is installed entirely within the hoistway 2 from bottom to top.

[0045] As described above, according to the centering device 5 of this embodiment, even if the screw shaft body 540 rotates about its axis when the fastener 54 is tightened, the pressing member 543 abuts against the guide surface 204 of the guide rail 20 without rotating relative to it, and the surface (second abutment surface) 543a of the pressing member 543 is in surface contact with the guide surface 204 of the guide rail 20. Therefore, according to the centering device 5 of this embodiment, it is possible to suitably prevent the guide surface 204 of the guide rail 20 from being damaged during the centering operation.

[0046] According to the centering device 5 of this embodiment, the base 53 of the clamp 52 has a third surface (third abutment surface) 534a that abuts against the tip surface 205 of the guide rail 20, and is configured so that when the third surface (third abutment surface) 534a abuts against the tip surface 205 of the guide rail 20, the entire surface (second abutment surface) 543a of the pressing member 543 abuts against the other guide surface 204 of the guide rail 20. Therefore, according to the centering device 5 of this embodiment, the centering device 5 is fixed to the guide portion 203 of the guide rail 20 in the first direction X and second direction Y that are orthogonal to each other, and stable centering operation can be performed.

[0047] According to the centering device 5 of this embodiment, the vertical frame 50 is a square timber having a first surface 50a which is a first abutment surface, a second surface 50b which faces parallel to the first surface 50a and abuts against the base 53, a third surface 50c which is perpendicular to the first surface 50a and the second surface 50b and abuts against the base 53, and a fourth surface 50d which faces parallel to the third surface 50c. Therefore, according to the centering device 5 of this embodiment, high rigidity of the device 5 can be obtained.

[0048] According to the centering device 5 of this embodiment, the vertical frame 50 is a long member extending along the longitudinal direction of the guide rail 20, the clamps 52 are provided at a plurality of locations in the longitudinal direction of the vertical frame 50, the base end surface 53a of the base 53 of each clamp 52 is located on a first plane P1, the tip end surface 53b of the base 53 of each clamp 52 is located on a second plane P2 parallel to the first plane P1, and the fourth surface 50d of the vertical frame 50 is located substantially on the second plane P2. Therefore, according to the centering device 5 of this embodiment, when not in use, it can be placed stably on the floor or the like, and multiple devices 5 can be stacked on top of each other.

[0049] According to the centering device 5 of this embodiment, one or both of the second surface 50b and the third surface 50c of the vertical frame 50 has a T-slot 500, and the base 53 is fixed to the vertical frame 50 using the T-slot 500 and fasteners 535, 536. Therefore, according to the centering device 5 of this embodiment, the vertical frame 50 and the base 53 can be firmly integrated.

[0050] According to the centering device 5 of this embodiment, by loosening the fastening by the fasteners 535, 536, the base 53 becomes slidable in the longitudinal direction of the vertical frame 50. Therefore, according to the centering device 5 of this embodiment, the position of the clamp 52 relative to the vertical frame 50 can be adjusted depending on the shape and dimensions of the connecting portion of the guide rail 20.

[0051] According to the centering device 5 of this embodiment, a handle 51 is provided on the device 5. Therefore, according to the centering device 5 of this embodiment, the device 5 can be easily carried, and when the vertical frame 50 is pressed against the guide surface 204 of the guide rail 20, it can be easily pressed parallel to the guide surface 204.

[0052] 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.

[0053] In the above embodiment, the vertical frame 50 is a square timber. However, the present invention is not limited to this. The shape of the vertical frame is not particularly limited as long as it can ensure the strength and rigidity of the device 5. As an example, the vertical frame 50 shown in FIG. 8 is a long angle timber extending along the longitudinal direction of the guide rail 20, and the surface 50a of the first portion of the orthogonal strip-shaped first and second portions serves as the first abutment surface.

[0054] In the above embodiment, the rotation operation part 541 of the fastener 54 is the head of a bolt. However, the present invention is not limited to this. As an example, the rotation operation part 541 shown in FIG. 9 is a T-bar knob.

[0055] In the above embodiment, three clamps 52 are provided. However, the present invention is not limited to this. Two clamps, or four or more clamps, may be provided. Also, one clamp may be provided. In this case, the clamp is aligned with the joints at both ends of the two upper and lower guide rails.

[0056] In the above embodiment, the T-slot 500 is formed in the vertical frame 50. However, the present invention is not limited to this. The slot may be a dovetail slot.

[0057] In the above embodiment, the T-slot 500 is formed on each of the second surface 50b and the third surface 50c of the vertical frame 50. However, the present invention is not limited to this. The slot may be formed on either one of the surfaces. [Explanation of symbols]

[0058] 1... elevator, 2... hoistway, 2A... pit, 20... guide rail, 200... base, 201... protrusion, 202... connection part, 203... guide part, 204... guide surface, 205... tip surface, 21... guide rail, 22... connecting material, 23... fixing device, 3... car, 30... guide body, 4... drive mechanism, 40... hoisting machine, 41... counterweight, 42... main rope, 5... centering device, 50... vertical frame, 50a... first surface (first abutment surface), 50b... second surface, 50c... third surface, 50d... fourth surface, 500... T-slot, 51... handle, 51a... through hole, 510... bolt (fixing device), 511... T-slot nut (fixing device), 52... clamp, 53... base s, 53a...base end surface, 53b...tip surface, 530...opposing portion, 531...connecting portion, 532...first connecting portion, 532a...first surface, 532b...through hole, 532c...screw holding portion, 533...second connecting portion, 533a...second surface, 533b...through hole, 534...third connecting portion, 534a...third surface (third abutting surface), 534b...through hole, 535...bolt (fixing device), 536...T-slot nut (fixing device), 54...fastening device, 540...screw shaft body, 541...rotation operation portion, 542...tip portion, 542a...spherical recess, 543...pressing member, 543a...surface (second abutting surface), 543b...spherical convex portion, AC...axis center, DP...depth, GP...gap, P1...first plane, P2...second plane

Claims

1. An elevator guide rail centering device for eliminating a step at a connecting portion of a guide rail having two guide surfaces positioned in a thickness direction and a tip surface positioned between tip edges of the two guide surfaces in a width direction, a vertical frame having a first contact surface that contacts one guide surface of the guide rail; a clamp that applies a pressing force to the other guide surface of the guide rail, The clamp includes a base that is integrated with the vertical frame and a fastener that is supported by the base; The fastener includes a screw shaft located on a line perpendicular to the first contact surface, and a pressing member having a second contact surface that contacts the other guide surface of the guide rail, The pressing member is rotatable about its axis relative to the screw shaft body and is tiltable relative to the axis of the screw shaft body. Elevator guide rail centering device.

2. the base has a third abutment surface that abuts against the tip end surface of the guide rail; When the third contact surface is in contact with the tip end surface of the guide rail, the entire second contact surface of the pressing member is configured to contact the other guide surface of the guide rail.

2. The elevator guide rail centering device according to claim 1.

3. The vertical frame is a square member having a first surface which is a first contact surface, a second surface which is parallel to and faces the first surface and contacts the base, a third surface which is perpendicular to the first and second surfaces and contacts the base, and a fourth surface which is parallel to and faces the third surface.

2. The elevator guide rail centering device according to claim 1.

4. The vertical frame is a long member extending along the longitudinal direction of the guide rail, The clamps are provided at a plurality of locations in the longitudinal direction of the vertical frame, a proximal end surface of the base of each clamp is located on a first plane, and a distal end surface of the base of each clamp is located on a second plane parallel to the first plane; The fourth surface of the vertical frame lies substantially on the second plane.

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

5. One or both of the second surface and the third surface of the vertical frame has a T-slot or a dovetail groove; The base is fixed to the vertical frame using a T-slot or dovetail and fasteners.

5. The elevator guide rail centering device according to claim 3 or 4.

6. Equipped with a handle that can be attached to the vertical frame 3. The elevator guide rail centering device according to claim 1 or 2.

Images