JPH11199158A - Aligning device for elevator guide rail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aligning device for an elevator guide rail, which can accurately align a rail member in a short time in comparison with an aligning method used in the past for the rail member wherein the rail temporarily fixed is struck by a hammer and the like, and is hardly affected by the finishing condition of the wall of an elevating passage. SOLUTION: This device is equipped with a gauge body 25 having gripping parts 26 and 27 capable of gripping a rail member at both the ends of it in the longer direction while the member is held by a plurality of rollers, a base body 28 capable of holding the gauge body 25 in such a way that it can be moved while being provided with a base part 52, pressing members 56 and 57, a member in continuous length and the like, and with bolts 78 and 79 connecting the gauge body 25 with the member in continuous length, and it is so designed that the gauge body 25 can be adjusted in position along the longer direction by sliding the member in continuous length along the base part 52, and it is also so designed that the gauge body 25 can be adjusted in position along the direction perpendicularly intersected with the longer direction by means of bolts 78 and 79. Besides, a propping force granting means is provided for the base 28, which grants propping force to the pressing members 56 and 57 to bond the pressing members with pressure to the wall of an elevating passage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator guide rail centering apparatus suitable for use in centering work when a rail member for an elevator guide rail is installed and fixed to a hoistway wall.

[0002]

2. Description of the Related Art As a centering device for an elevator guide rail, a technology described in Japanese Patent Application Laid-Open No. Sho 61-127583 is widely known. Therefore, such a conventional technique will be described with reference to FIGS. However, FIG. 8 is a side view showing a state where the guide rail is being erected in the hoistway, FIG. 9 is a flowchart showing an operation procedure when the guide rail is installed in the hoistway, FIG.
Is a perspective view for explaining a guide rail centering operation performed by using a conventional centering device, and FIG. 11 is a plan view of a main part of the conventional centering device shown in FIG.

When erecting guide rails in an elevator shaft, as shown in FIGS. 8 and 10, a pair of piano wires (reference lines) 1a and 1b are suspended in the elevator shaft 3 and stretched. After installation, a plurality of rail members 4a, 4b,...
And a plurality of rail members 5a, 5b,.
Guide rails 4 connected over the entire length of the
After the guide rails 5 are held upright, the piano wires 1a, 1
The rail members are centered and fixed with reference to b.

[0004] Such installation work of the guide rails 4 and 5 is performed in a procedure as shown in FIG. That is, first, in step S1, a pair of piano wires 1a and 1b are suspended from the machine room 2 into the hoistway 3 and stretched with reference to a predetermined position of the building. Next, in step S2, the lowermost rail member 4n erected at the bottom of the hoistway 3 is centered on the basis of the piano wire 1a, and the lowermost rail member 4n is fixed via a bracket (not shown). Similarly, the lowermost rail member of the guide rail 5 is erected at the bottom of the hoistway 3 to perform centering based on the piano wire 1b and then fixed.

[0005] Thereafter, as a step S3, as shown in FIG. 8, the rail member 4a is lifted by driving the winch 6, and the lower end of the rail member 4a is connected to the upper end of another rail member 4b. The members 4a and 4b are lifted, and another rail member 4 is attached to the lower end of the rail member 4b.
A plurality of rail members 4a, 4b, 4c,... are sequentially connected over the entire length of the hoistway 3, such as by connecting the upper ends of c. Then, as procedure S4, if the upper end of the lowermost rail member 4n is connected to the lowermost end of the rail members 4a, 4b, 4c,. In step S5, the upper end of the unfixed guide rail 4 (the upper end of the rail member 4a) is held on the floor 2a of the machine room 2. Similarly, a plurality of rail members 5a, 5b,.
Are connected in sequence to form an unfixed guide rail 5
After that, the upper end of the guide rail 5 is held on the floor 2a of the machine room 2.

Next, in step S6, the car frame 7 and the work floor 8 are engaged with the lowermost rail member 4n of the one guide rail 4 and the lowermost rail member of the other guide rail 5, respectively.
Is raised by driving the hoist in the machine room 2 (FIG. 1).
0). Then, as step S7, the worker who got on the work floor 8 performs centering and fixing of the rail members 4a, 4b,... And the rail members 5a, 5b,.

A conventional centering device 9 used for centering the rail members has a configuration as shown in FIG. 11, and is installed on a work floor 8 as shown in FIG. The centering device 9 has a rod-shaped base 10 that is placed horizontally.
And a gripper 1 provided at one longitudinal end of the base 10.
1 and a reference portion 12, and a grip portion 13 and a reference portion 14 provided at the other end in the longitudinal direction of the base portion 10. The one holding portion 11 includes a fixed member 11a and a movable member 11b for sandwiching a rail member 4a and the like constituting the guide rail 4, and both of these members 1
Bolts 11c for tightening 1a and 11b are provided, and a reference surface 12a for measuring the position in the illustrated X direction is formed on the reference portion 12, and the position in the Y direction illustrated is measured. A reference line 12b is provided on the upper surface. Similarly, the other grip 13 has
A fixed member 13a and a movable member 13b for sandwiching the rail member 5a and the like constituting the guide rail 5, and a bolt 13c for tightening the two members 13a and 13b
The reference portion 14 has a reference surface 14a for measuring a position in the illustrated X direction, and a reference line 1 for measuring the position in the illustrated Y direction.
4b is attached to the upper surface.

Next, a description will be given of the work of centering and fixing a pair of rail members 4a and 5a facing each other using the centering device 9 described above. First, while holding the head 17 of one of the rail members 4a with the grip portion 11, the base 18 of the rail member 4a is attached to the rail side bracket 15b using the rail clip 15a, and is bolted to the bracket 15b. By attaching the wall-side bracket 15c to the hoistway wall 3a,
The rail member 4a is temporarily fixed to the hoistway wall 3a via the brackets 15b and 15c. Similarly, the other rail member 5
While holding the head 19 of FIG. 1A by the grip portion 13, the base 20 of the rail member 5a is attached to the rail-side bracket 16b using the rail clip 16a, and the wall-side bracket 1 is bolted to the bracket 16b.
By attaching the rail member 5a to the hoistway wall 3b via the brackets 16b and 16c, the rail member 5a is attached to the hoistway wall 3b.
Temporarily fixed to b.

Thereafter, the operator strikes the rail side bracket 15b with a hammer or the like to move the rail member 4a appropriately in the X direction in the drawing, so that the distance from the piano wire 1a to the reference surface 12a becomes a predetermined dimension. The distance from the piano wire 1a to the reference line 12b is adjusted to a predetermined size by appropriately moving the rail member 4a in the Y direction in the figure by hitting the wall side bracket 15c. Thereby, centering of the rail member 4a with the piano wire 1a as a positioning reference can be performed. Similarly, the worker adjusts the distance from the piano wire 1b to the reference surface 14a to a predetermined size by appropriately moving the rail member 5a in the X direction in the figure by hitting the rail side bracket 16b with a hammer or the like. , Wall side bracket 16
By hitting c with a hammer or the like to move the rail member 5a appropriately in the Y direction in the figure, the piano wire 1b is
Adjust so that the distance to 4b becomes a predetermined dimension.

When the rail members 4a and 5a are centered in this way, the rail members 4a and 5a are respectively fixed to the hoistway walls 3a by fully tightening the fixing bolts of the brackets 15b and 15c and the brackets 16b and 16c. , 3b.

[0011]

As described above, in the prior art, each of the rail members 4a, 5 constituting the guide rail is provided.
a and the like are temporarily fixed to the hoistway walls 3a, 3b, and the rail-side brackets 15b, 16b and the wall-side brackets 15c,
Although the centering work of adjusting the positions of these rail members is performed by hitting 16c with a hammer or the like, it is not easy to achieve the desired displacement of the rail members by hitting the bracket, and it is a physical burden. Was also big. Therefore, the prior art required a great deal of time and labor for centering the elevator guide rail, which requires high accuracy, and was inefficient in work efficiency.

It is desirable that the opposing hoistway walls 3a and 3b are finished so as to have vertical surfaces parallel to each other. In practice, however, a part of the hoistway walls 3a and 3b faces the vertical surface. It is often finished in a slightly inclined state, and in such a case, the wall-side brackets 15c and 16c in the related art are attached in a non-parallel state.
A pair of rail members 4a, 5a temporarily fixed at the same height position via the brackets 15c, 16c have a twisted positional relationship, and when the centering device 9 is mounted, an excessive force is likely to be generated. Become. That is, when the heads 17, 19 of the rail members 4a, 5a in a twisted positional relationship are gripped by the grippers 11, 13 at the time of centering, the heads 17, 19 to which excessive bending stress acts. 19 is elastically deformed.
When the heads 1 and 13 are removed from the rail members 4a and 5a, the heads 17 and 19 return to their original shapes due to their own elastic force, and the centering positions of the rail members 4a and 5a tend to be deviated.

Further, the pair of rail members 4a, 5a must be centered with one side surface 4b, 5b of each of the heads 17, 19 located in the same plane.
In the prior art, the gripping parts 11 and 13 have the heads 17 and 1.
The dimensions of each part of the centering device 9 are set so that the side surfaces 4b and 5b are automatically positioned on the same plane when the user grips the gripper 9. However, in the case where the dimensional error at the time of manufacturing the centering device 9 is large or the centering device 9 is deformed due to severe use, in the related art, the centering is performed in a state where the side surfaces 4b and 5b are not located in the same plane. Since it may be issued,
There was a possibility that desired centering accuracy could not be secured.

The present invention has been made in view of such problems of the prior art, and an object of the present invention is to enable a rail member for a guide rail to be accurately centered in a short period of time and to finish a hoistway wall. An object of the present invention is to provide an elevator guide rail centering device which is hardly influenced by a state.

[0015]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention relates to a method for centering a rail member on a reference line suspended in a hoistway when a rail member for a guide rail is installed and fixed. In a centering device for an elevator guide rail, a grip body provided at both ends in the longitudinal direction with gripping portions capable of gripping a pair of opposed rail members held upright in a hoistway, and the gauge body can be moved. A base that extends along the longitudinal direction of the gauge body, and a pair of pressing members that can extend from both longitudinal ends of the base toward the opposing hoistway walls. A tensioning means for applying a tensioning force to these pressing members to press against the hoistway wall, and extending along the longitudinal direction of the base and supported by the base and the gauge And a first position adjusting means capable of displacing the elongate member along the longitudinal direction of the base, and along a direction orthogonal to the longitudinal direction of the elongate member. And a second position adjusting means capable of displacing the gauge body.

[0016] The centering device constructed as described above provides a pair of extension members of the base body while holding a pair of opposing rail members held upright in the hoistway with the holding parts at both ends in the longitudinal direction of the gauge body. The base member can be fixed between the hoistway walls by extending the members outward and pressing the respective elongate members against the hoistway walls by the tensioning means. Therefore, in this state, if the mounting position of the elongated member is adjusted along the longitudinal direction of the base body by the first position adjusting means, the gauge body connected to the elongated member is also positioned in the same direction. As a result, the distance between the pair of rail members can be set to a predetermined dimension. Moreover, since the position of the gauge body can be adjusted in a direction orthogonal to the longitudinal direction of the long member by the second position adjusting means, the rail member temporarily fixed is hit with a hammer or the like to center the rail member. Compared with the conventional centering device which had to be necessitated, the work time required for centering can be reduced, and the centering accuracy can be improved. Further, even in a hoistway having a difficult finish state in which opposing hoistway walls are not parallel,
Since there is no need to apply excessive bending stress to the rail member during the centering operation, good centering accuracy can be obtained.

Further, a first roller for holding the gripping portion in contact with the front end face of the head of the rail member to regulate the position of the front end face, and a pair of rollers formed on the rear end side of the head. A pair of second rollers capable of pressing against the stepped portion, first biasing means capable of pressing the second rollers toward the corresponding stepped portion, and pressing both side surfaces of the head. If a configuration is provided which includes a pair of possible third rollers and a second urging means capable of urging at least one of the third rollers toward the head, the rollers are sandwiched by these rollers. While holding the rail member, the rollers can be rolled along the surface of the rail member while the gripping state is maintained, and the centering device can be moved up and down. Therefore, when the centered rail member is fixed to the hoistway wall via the rail bracket, it is not necessary to release the state in which the rail member is gripped by the grip portion, and the working efficiency is improved.

Further, by rotating the gripping portion with respect to the long member and adjusting the position of the third roller, one side surface of each of the heads of the pair of rail members opposed to each other is flush with each other. If the configuration is provided with an adjusting means capable of being positioned inside, by performing the adjustment by the adjusting means while holding a pair of rail members at each grip portion, one of the heads of both rail members. Since the side surfaces can be positioned in the same plane, good centering accuracy can always be ensured.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below mainly with reference to FIGS. However, FIG. 1 is a plan view of the centering device in the present embodiment, FIG. 2 is an enlarged plan view of a grip portion of the centering device shown in FIG. 1, and FIG.
4 is a side view of the gripper shown in FIG. 2, FIG. 5 is a front view of a base body of the centering device shown in FIG. 1, and FIG. 6 is a view taken along line AA in FIG. FIG. 7 is a sectional view taken along the line BB of FIG.

As shown in FIGS. 2 and 3, a rail member 21 for an elevator guide rail is generally formed with a base 22 and a head 24 projecting from the base 22. A pair of steps 23a and 23b are formed on the rear end side. Reference numeral 24a indicates a front end surface of the head 24, and reference numerals 24b and 24c indicate side surfaces on both sides of the head 24.

In this embodiment, the rail member 2
As shown in FIG. 1, the centering device used at the time of installation and fixing of 1 is provided with gripping portions 26 and 27 at both ends in the longitudinal direction, which can grip a pair of opposed rail members 21 standing and held in a hoistway. And a base body 28 movably holding the gauge body 25. The base body 28 includes a base 52, a long member 53, elongate members 54 and 55, The pressing members 56 and 57 are provided.

The configuration of each part of the centering device will be described. The gauge member 25 has a U-shaped long member 29 and a cross-section in which the long member 29 is slidably inserted. A long member 30 having a U-shape and a plurality of bolts 31 for connecting and fixing the two long members 29, 30 are provided. Installed.

Since the structure of the holding parts 26 and 27 is the same, one of the holding parts 27 attached to the long member 30 is used.
Only will be described in detail. As shown in FIG. 2, the holding portion 27 is provided with a holding table 32 fixed to the tip of the long member 30, and the positioning section 33 is fastened on the holding table 32. , A bracket 34 and a bracket 35 are fixedly provided. The bracket 34
The front end of a bolt 36 disposed parallel to the longitudinal direction of the gauge body 25 is fixed to the front end face 24 a of the head 24 of the rail member 21. A first roller 37 for regulating the position of the front end surface 24a and a third roller 40 for pressing against one side surface 24b of the head 24 are rotatably attached to each other. ing. In addition, this bracket 3
4, a pair of second rollers 38 and 39 for pressing against the step portions 23a and 23b of the rail member 21 and another third roller for pressing against the other side surface 24c of the head 24. 41 are provided.

A moving plate 42 is mounted on the bolt 36, and lock nuts 43, 44 holding the moving plate 42 are screwed to the bolt 36. First arms 45 and 46 are rotatably attached to both left and right ends of the moving plate 42, and the second rollers 38 and 39 are rotatably attached to tips of the arms 45 and 46, respectively. The arms 45, 46 can move in a direction parallel to the longitudinal direction of the gauge body 25 following the moving plate 42. Further, a bolt 47 extending in a direction perpendicular to the longitudinal direction of the gauge body 25 is inserted through the first arms 45 and 46, and a nut 48 is screwed to the bolt 47. The second rollers 38 and 39 are attached to the step portions 23a and 23b of the rail member 21 by the bolts 36, the lock nuts 43 and 44, the first arms 45 and 46, the bolts 47 and the nuts 48. First urging means capable of urging or releasing the urging state is provided.

Further, FIG.
As shown in FIG. 3, a support shaft 50 for rotatably supporting the second arm 49 is attached.
The third roller 41 is rotatably attached to 9. Then, a bolt 51 screwed into the bracket 35
When the second arm 49 is pressed by the
The front end side of 9 approaches the head 24 of the rail member 21. The second arm 49, the support shaft 50, and the bolt 51 allow the third roller 41 to be biased toward the side surface 24c of the rail member 21 or to be released from the biased state. Force means is configured.

Next, the configuration of the base body 28 will be described. As shown in FIGS. 5 to 7, the base body 28 has a U-shaped cross section and extends along the longitudinal direction of the gauge body 25, and is provided along a lower portion of the base 52 so that An elongate member 53 supported by 52 and connected to the gauge body 25; a pair of elongate members 54 and 55 inserted into the base 52 and extendable from both ends in the longitudinal direction of the base 52, respectively; Each extension member 54,
55, a pair of pressing members 56 that can further project outward
57 and a pressing member 56 installed on one of the extension members 54.
A pressing force generating means 58 for generating a pressing force toward the pressing member 57, and a pressing force generating means 59 for generating a pressing force toward the pressing member 57.
And a first position adjusting means 60 that can be displaced by sliding along the longitudinal direction of the base 52. The extension members 54 and 55 and the pressing force generation means 5
8, 59 constitute a tensioning force applying means for applying a tensioning force to the pressing members 56 and 57 and pressing them against the opposing hoistway walls.

The elongate member 53 is inserted into the pair of U-shaped members 62 and 63 held by the base 52 via a plurality of holding fittings 61 and inserted into the U-shaped members 62 and 63. And a long plate 64 disposed on the lower surface of the U-shaped member 6 with bolts 65.
The extension members 54 and 55 are fixed to the base 52 by bolts 66 and 67. The pressing force generating means 59 includes a bracket 68 fixed to an upper portion on the base end side of the pressing member 57, a bolt 69 screwed to the bracket 68 and extending along the projecting direction of the pressing member 57, An L-shaped fitting 70 provided at an upper portion on the base end side of the member 55; a screw plate 71 provided in the extending member 55 and disposed below the L-shaped fitting 70; and the L-shaped fitting 70 and the screw plate 71 And the other pressing force generating means 58 has the same configuration. Further, the first position adjusting means 60 is
As shown in FIG. 6, a screw portion 74 fixed to a long plate 64 of the long member 53 via an L-shaped bracket 73, and a base portion 52
And a bolt 76 that extends along the longitudinal direction of the base 52 and is inserted through the bracket 75 and screwed into the screw portion 74.

Further, the centering device includes a gauge 2
5 is provided with a second position adjusting means for connecting the elongate member 53 of the base member 28 to the elongate member 53 and displacing the gauge body 25 in a direction orthogonal to the longitudinal direction of the elongate member 53. . The second position adjusting means includes a pair of bolts 78, 79 extending in a direction perpendicular to the longitudinal direction of the elongated member 53 (the longitudinal direction of the base body 28), and the elongated members 29, 30 of the gauge body 25. A pair of support portions 80, which are fixed to the lower portions of the distal ends and screw the bolts 78, 79, respectively,
81, a pair of support portions 82, 83 fixed to the lower ends of both ends of the elongated member 53 of the base body 28 and through which the bolts 78, 79 are respectively inserted, and the diagonally extending support portions 82, 83 on the gauge body 25 side. A connecting plate 84 connects the supporting portion 81 and the supporting portion 82 on the base body 28 side. The connecting plate 84 is a member for transmitting an adjusting force when positioning and adjusting the gauge body 25 in the longitudinal direction.

Next, the work of centering the rail member 21 using the above-described centering device will be described. First, the extension members 54 and 55 are stored in the base portion 52 of the base body 28 in advance, and the nut 48
To move the first arms 45 and 46 away from each other, and by loosening the lock nuts 43 and 44 to move the moving plate 42 toward the bracket 34 so that the first arm 45 and 46 are moved away from each other. The urging means is set in the non-energized state, and the bolt 51 is loosened to keep the second arm 49 in the hanging state, so that the second urging means is set in the non-energized state. Similarly, the other gripper 26
Also, the first and second urging means are kept in the urging release state.

Then, the above-described centering device is installed on the handrail of the work floor 8 shown in FIG. 10, and a pair of opposing rail members 21 (for example, the rail member 4a in FIG. 10) held upright in the hoistway. , 5a), respectively.
After the first and second rollers 27 and 27 are opposed to each other in a close state, the first roller 37 of the grip portion 27 is pressed against the front end surface 24a of the head 24 of one of the rail members 21 so that the nut 48 of the first urging means is pressed. By tightening the first arms 45 and 46 toward each other, the step portions 23a and 23b of the rail member 21 are moved to the second position.
Between the rollers 38 and 39. Further, in this state, by operating the lock nuts 43 and 44 to move the movable plate 42 in a direction away from the bracket 34, the second rollers 38 and 39 are respectively moved to the step portions 23 of the rail member 21.
a, 23b. Next, this rail member 21
With one third roller 40 in contact with one side surface 24b of the head 24, the bolt 51 of the second urging means
To rotate the second arm 49 in the counterclockwise direction in FIG.
1 is pressed against the other side surface 24c of the head portion 24 of the rail member 21. As a result, the rail member 21 is sandwiched between the first roller 37 and the second rollers 38 and 39 in the left-right direction in FIG. 2, and is sandwiched between the third rollers 40 and 41 in the up-down direction in FIG. Since it is in a state of being held, it is integrated with the grip portion 27. Similarly, the other rail member 21
Is also held between the first, second, and third rollers of the other holding portion 26.

When the rail members 21 are grasped by the pair of grasping portions 26 and 27 in this manner, the extension members 54 and 55 of the base body 28 are extended outward, respectively, and the pressing member 5 is extended.
6, 57 are protruded until they come into contact with the opposing hoistway walls. Next, the bolt 72 of the pressing force generating means 59 is loosened to move the L-shaped bracket 70 and the screw plate 71 to the proximal end side of the pressing member 57 along the extension member 55, and then the bolt 7
2 to fix the L-shaped bracket 70 to the extension member 55,
In this state, the bolt 69 is tightened to press the L-shaped bracket 70, thereby applying a pressing force to the pressing member 57 and pressing the bolt portion 57 a at the tip thereof to the opposing hoistway wall. Similarly, the other pressing force generating means 58 is also moved to the base end side of the pressing member 56 along the extension member 54, and then, is provided with a pressing force to the pressing member 56, and the bolt portion 56a To the opposing hoistway wall.
As a result, the base body 28 can be fixed between the opposing hoistway walls by the tension force.

Thereafter, the bolt 76 of the first position adjusting means 60 is rotated to adjust the mounting position of the elongate member 53 with respect to the base 52 of the base body 28 along the longitudinal direction. The mounting positions of the long members 29 and 30 are adjusted along the longitudinal direction of the base body 28. By rotating the bolts 78, 79 of the second position adjusting means, the mounting positions of the elongated members 29, 30 are adjusted along a direction orthogonal to the longitudinal direction of the base body 28.
In such a position adjustment, the grip portions 26 and 27 located at both ends of the gauge body 25 are connected to the piano wire 1 shown in FIG.
The alignment is performed with reference to a and 1b. By arranging the gripping portions 26 and 27 at predetermined positions in the same plane, the centering operation of the pair of rail members 21 is completed.

After that, when centering another rail member at a position higher in the hoistway,
First, the pressing force generating means 58 and 59 are loosened to release the pressing member 5.
6, 57 are drawn inward, and a pair of grips 26, 2
When the work floor 8 and the car frame 7 on which the centering device is installed are raised to predetermined positions while holding the centered rail members at 7, the first of the holding portions 26 and 27 is
In addition, since the third rollers 37 to 41 roll along the surface of the rail member, the centering device is smoothly guided.
Then, when the car frame 7 is stopped at a predetermined height position,
After the pressing members 56 and 57 are pressed against the opposing hoistway walls to obtain a tension force, the rail members are newly centered in the same procedure as the above-described operation.

When the centered rail member 21 is fixed to the hoistway wall via a rail bracket (not shown), a pair of gripping portions 26 and 27 are attached along the surface of the rail member 21. It is not necessary to release the gripping state by rolling slightly below the position.

As described above, in this embodiment, after the base member 28 is fixed between the opposing hoistway walls by the tension force, the first position adjusting means 60 is operated to operate the gauge member 25.
Is adjusted along the longitudinal direction of the base body 28 so that the distance between the two rail members 21 held by the pair of holding portions 26 and 27 is maintained at a predetermined size. In this state, the second position adjustment is performed. Since the position of the gauge body 25 is adjusted along the direction orthogonal to the longitudinal direction of the base body 28 by operating the means, the rail members temporarily fixed to the shaft wall are hit with a hammer or the like to center the rail members. The centering operation can be performed in a shorter time and the centering accuracy can be improved as compared with the conventional centering device which has to perform the above.

In the present embodiment, the bending stress is not applied to the rail member 21 at the time of the centering work even in the hoistway in which the facing hoistway walls are not parallel to each other and the finishing state is difficult. The rail member 21 can be accurately centered.

In this embodiment, the pair of gripping portions 2
6 and 27 can roll along the surface of the rail member 21 while gripping the rail member 21, so that when the centered rail member 21 is fixed to the hoistway wall via the rail bracket, the gripping portions 26 and 27 are used. The centering device can be moved up and down without releasing the gripping state. Therefore, also from this point, the work of centering and fixing the rail member 21 can be efficiently performed.

In this embodiment, the extension members 54 and 55 and the pressing members 55 and 56 are provided on the base 52 side of the base body 28, and the long member 53 provided below the base 52 is gauged. Since it is configured to be connected to the body 25, each component of the centering device has a relatively compact shape, which is convenient for carrying and storing.

Further, in the present embodiment, even when the dimensions of the centering device itself are slightly different,
Heads 24 of a pair of rail members 21 facing each other in the hoistway
The centering can be performed such that one of the side surfaces 24b is positioned in the same plane. That is, the mounting structure of the grip portions 26 and 27 of the gauge body 25 is, for example, the grip portion 27 shown in FIG.
In the case of, the bolts 30a, 3
0b and the nuts 30c, 30d are connected to the elongated member 30, and the position of the bolt 30b can be changed in the elongated hole 91.
It can be rotated in the direction of arrow 90 in FIG. Therefore, while holding the pair of rail members 21 facing each other, the holding portions 26 and 27 are
9 and 30 so that the third roller 40 (see FIG. 1) on the gripper 26 and the third roller 40 on the gripper 27 are pressed against each rail member 21 in the same plane. If it adjusts, each head 2 of these both rail members 21
4, one side surface 24b can be positioned in the same plane, and good centering accuracy can always be ensured.

[0040]

The centering device for an elevator guide rail according to the present invention is embodied in the form described above, and has the following effects.

After the base member is fixed between the hoistway walls while the pair of opposed rail members held upright in the hoistway are gripped by the grip portions at both ends in the longitudinal direction of the gauge body, the base member is elongated. The position of the gauge body connected to the member can be adjusted along the longitudinal direction of the elongate member by the first position adjusting means, and the gauge body can be adjusted by the second position adjusting means to be orthogonal to the longitudinal direction of the elongate member. Work time required for centering compared to the conventional centering device, which had to hit the temporarily fixed rail bracket with a hammer, etc. Can be shortened and the centering accuracy can be improved. Also, even on a hoistway where there is difficulty in finishing the opposing hoistway walls are not parallel, there is no need to apply excessive bending stress to the rail member during centering work, so good centering accuracy is can get.

Further, if the gripping portions located at both ends of the gauge body are configured to have a plurality of rollers for holding and holding the head of the rail member, each roller is held in the rail member while holding the gripping state. Since the centering device can be moved up and down by rolling along the surface, when fixing the centered rail member to the hoistway wall via the bracket,
There is no need to release the gripping state by the gripper,
Work efficiency is improved.

Further, if a configuration is provided in which adjusting means capable of aligning one side surface of each head of a pair of rail members opposed to each other within the same plane, a pair of rails is provided at each grip portion. By performing the adjustment by the adjusting means while holding the members, one side surface of the heads of both rail members can be positioned in the same plane, so that good centering accuracy can always be ensured.

[Brief description of the drawings]

FIG. 1 is a plan view of a centering device according to an embodiment of the present invention.

FIG. 2 is an enlarged plan view showing a grip portion of the centering device shown in FIG.

FIG. 3 is an explanatory diagram of an operation of a gripping unit shown in FIG. 2;

FIG. 4 is a side view of the grip shown in FIG. 2;

5 is a front view of a base body of the centering device shown in FIG.

FIG. 6 is a sectional view taken along line AA of FIG.

FIG. 7 is a sectional view taken along the line BB of FIG. 5;

FIG. 8 is a side view showing a state where guide rails are being erected in the hoistway.

FIG. 9 is a flowchart showing an operation procedure when a guide rail is installed in a hoistway.

FIG. 10 is a perspective view for explaining a guide rail centering operation performed by using the centering device.

FIG. 11 is a plan view of a main part of a conventional centering device.

[Explanation of symbols]

 21 rail member 23a, 23b step portion 24 head 24b, 24c side surface 25 gauge body 26, 27 gripping portion 28 base body 32 holding table 34, 35 bracket 37 first roller 38, 39 second roller 40, 41 third Rollers 43, 44 Lock nuts 45, 46 First arm 49 Second arm 52 Base 53 Long member 54, 55 Extending member 56, 57 Pressing member 58, 59 Pressing force generating means 60 First position adjusting means 78 , 79 volts

Claims (4)

[Claims] 1. An elevator guide rail centering device for centering a rail member on the basis of a reference line suspended in the hoistway when the rail member for the guide rail is installed and fixed. A gage body provided at both ends in the longitudinal direction with grips that can be gripped by a pair of held rail members facing each other; and a base body that movably holds the gage body. A base extending along the longitudinal direction of the base, a pair of pressing members extendable from both ends in the longitudinal direction of the base toward opposing hoistway walls, and a tension force is applied to these pressing members to apply to the hoistway wall. A tensioning means for applying pressure, a long member extending along the longitudinal direction of the base and supported by the base and connected to the gauge body; A first position adjusting means capable of displacing along the direction, and a second position adjusting means capable of displacing the gauge body along a direction orthogonal to a longitudinal direction of the elongated member. A centering device for an elevator guide rail. 2. A first roller in which the grip portion presses against a front end surface of a head of the rail member to regulate the position of the front end surface, and a pair of rollers formed on a rear end side of the head. A pair of second rollers capable of pressing against the stepped portion, first biasing means capable of pressing the second rollers toward the corresponding stepped portion, and pressing both side surfaces of the head. Possible pair of third
2. The centering of the elevator guide rail according to claim 1, further comprising a second biasing means capable of biasing at least one of the third rollers toward the head. apparatus. 3. The method according to claim 1, wherein the first urging means includes a pair of the second
Has an arm rotatably supporting the roller of the gauge body and movable along the longitudinal direction of the gauge body, and the second urging means rotatably rotates at least one of the pair of third rollers. 3. The centering device for an elevator guide rail according to claim 2, further comprising an arm supported and movable toward a head of the rail member. 4. A side surface of each of the heads of a pair of rail members opposed to each other by rotating the grip portion with respect to the long member to adjust the position of the third roller. 4. The centering device for an elevator guide rail according to claim 2, further comprising an adjusting means that can be positioned inside the elevator guide rail.