JP2001163547A - Centering jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a centering jig optimal to centering for a guide rail or the like when an elevator is installed. SOLUTION: In this centering jig B, gage parts 43 of having notch parts 53 engaged with a pair of left and right centering reference lines 70 vertically provided temporarily inside an elevator shaft in the installation of the elevator and having thumb rule parts 71 comprising marks 54, 54a, and chucks 42 for clamp-fixing guide rails 20 vertically provided inside the elevator shaft are arranged respectively in one sideface side and the other sideface side in both ends sides of a main body part 40 having a prescribed length. The gage part 43 is attached detachably and comprises a transparent plate. The jig B is optimal to the execution of the elevator since a position of the reference centering line 70 is allowed to be differed from a conventional method by template.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centering jig for installing a guide rail of a car frame or a counterweight in a hoistway when installing an elevator.

[0002]

2. Description of the Related Art An elevator has a pair of left and right guide rails installed in a hoistway provided in a building, and an elevator car is mounted on a car frame which moves up and down along the guide rails. In addition, a counterweight that rises as the elevator car descends is set up and down by a pair of left and right guide rails in the hoistway. Therefore, installation work of a total of four guide rails is necessary, and centering is performed during the installation work. Centering is
As shown in FIG. 4, templates 10 and 11 are arranged on the upper and lower portions of the hoistway 1, and centering reference lines 7, 8 and 9 such as piano wires are directed from the upper template 10 to the lower template 11. Temporarily suspend.

The centering reference lines 7, 8, 9 are
In addition to the four for five, two are required at the front (step side) of the car frame 2, and a total of six are installed as shown in FIG. These centering reference lines 7, 8, 9 are arranged so as to hang down at positions as close as possible to the guide rails 4, 5 and at a position near the doorway E at the front of the car frame 2. . Note that in FIG.
Reference numeral 2 denotes a machine room in the upper part of the hoistway, and in FIG. 5, 3 denotes a counterweight, and 6 denotes a rail bracket.

[0004]

However, in the temporary installation work of the centering reference lines 7, 8, and 9, the templates 10 and 11 are arranged at the upper and lower portions of the hoistway, and six templates are arranged on the basis of predetermined portions thereof. The centering reference lines 7 and 8.9 were to be hung, but in the case of an elevator, a winch had to be installed at the top of the hoistway, and equipment was installed around the O / H section. Therefore, when creating a template on the upper part of the hoistway, there is a problem that the interference with devices around the winch and the O / H section results in very poor work efficiency.

In addition, the hoistway is short if the hoistway is short, but the hoistway is long in the case of recent high-rise buildings. The centering reference line thus set also swings constantly, and there is a disadvantage that the centering workability is significantly reduced in efficiency.

Therefore, the present invention solves the above-mentioned inconvenience by setting the hanging position of the centering reference line without interfering with the winch at the top of the hoistway and the equipment around the O / H section at the top. The present invention provides a centering jig which is vertically installed at a position distant from the guide rail and which can accurately center the guide rail even when the hoistway is long.

[0007]

According to a first aspect of the present invention, a pair of right and left centering reference lines temporarily suspended in a hoistway are installed when an elevator is installed. A gauge section with a guide section is provided on one side, a chuck section for holding and fixing a guide rail to be vertically suspended in the hoistway is provided on the other side, and both ends of a main body section having a predetermined width are respectively provided. A centering jig, wherein the reference portion comprises a concave portion and a plurality of linear marks provided around the concave portion and intersecting extension lines, and the gauge portion is configured to be detachable from the main body portion. A centering jig is provided.

The recess may be formed as a U-shaped or isosceles triangle notch, and the gauge portion may be formed as a transparent plate as described in claim 3. A scale that intersects with the scale provided on the main body may be formed.

Therefore, the centering reference line is always moved to the center position in the concave portion of the gauge portion integrated with the main body portion holding the guide rail at both ends by the chuck portion,
Since the guide rail can be installed in the hoistway and the position of the centering reference line can be different from the conventional arrangement, it is most suitable for elevator construction.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, in a centering jig of the present invention, a main body portion 40 is formed of an I-shaped member, and wing members 41, 41 are arranged at both ends thereof in parallel. This is a centering jig B in which the chuck portions 42, 42 are arranged on one side of the members 41, 41 and the gauge portions 43, 43 are arranged on the other side.

As shown in detail in FIG. 2, the chuck portion 42 connects the U-shaped member 50 to the wing-shaped member 41, the inner surface of which contacts the one protrusion side surface 26 of the guide rail 20, and the other protrusion. The top 45 is disposed so that the top 45 contacts the side surface 34, and the top 49 is slidably contacted with the top surface 45 by a tapered surface 48 so as to press the top 45 against the projection side surface 34. The adjusting screw 47 of the top 49 is rotatable by the handle 44 so that the top 49 can be moved forward and backward. The shaft 46 of the top 45 is inserted through the U-shaped member 50 so as to be able to move forward and backward. Therefore, the structure for gripping the guide rail 20 is substantially the same as that of the above-described example, and the operation thereof is also substantially the same.

As shown in detail in FIG. 2, the gauge portion 43 is provided with a V-shaped notch 53 in an L-shaped transparent plate 52, and a plurality of marks 54 are formed around the notch to form a reference portion. The positioning holes 55, 55 are removably fixed to the wing-like member 41 by bolts 59 having a disk 58 in the positioning holes 55, 55. The mark 54a is extended and provided with a scale 56, and a scale 57 crossing the scale 56 is provided on the wing-shaped member 41. Therefore, the scales 56 and 57
The L-shaped transparent plate 52 in the wing-shaped member 41 can be accurately positioned by using as a guide.

Using this centering jig B, guide rail 2
As shown in FIG. 3, the guide rails 20, 20 are gripped by the chuck portions 43, 43, and then a pair of centering reference lines 70, 70
Are engaged in the notches 53, 53, and the centering jig holding the guide rails 20, 20 so that they are located at the intersections of the plurality of marks 54 without touching the notches 53, 53. By moving B, the guide rails 20 and 20 can be accurately positioned. Therefore,
Since the gauge portion 43 can be appropriately separated from the chuck portion 42, the centering reference lines 70, 70 are
That is, it can be vertically disposed at least at a position farther away from the conventional apparatus than the conventional apparatus.

Thus, the gauge section 4 integrated with the main body section 40 holding the guide rail 20 at both ends by the chuck section 42 is provided.
The guide rail 20 is accurately positioned in the hoistway by moving the centering jig B while visually checking the centering reference line 70 in the notch portion 3 with the reference portions 71, 71 so that the centering reference line 70 is always at the center position. And the centering reference line 70
Can be arranged differently from the conventional position in the hoistway, so that it is most suitable for elevator construction.

[0015]

According to the present invention described above, the guide line is visually checked so that the centering reference line is always at the center position on the guide portion of the gauge portion integrated with the main body portion holding the guide rail at both ends by the chuck portion. By moving the centering jig while checking, the guide rail can be accurately set in the hoistway.
Since the position of the centering reference line can be different from the conventional arrangement, large-scale templates that were required in the past can be used with a small scale, and the centering reference line is set in the notch of the gauge part. Since it is engaged, even if the building shakes and the centering reference line swings, it does not come off from the notch. Further, since the gauge portion can be attached to and detached from the main body portion, fine adjustment can be performed, and since the gauge portion is made of a transparent plate having a scale, the accuracy of the fine adjustment can be guaranteed. For this reason, it is possible to improve the workability of the elevator installation and to shorten the time, resulting in cost reduction.

[Brief description of the drawings]

FIG. 1 is a plan view showing a first embodiment of the present invention.

FIG. 2 is a partial perspective view of FIG. 2;

FIG. 3 is a perspective view showing a centering process.

FIG. 4 is a cutaway perspective view of a hoistway showing a conventional centering process.

FIG. 5 is a cross-sectional plan view of FIG. 4;

[Explanation of symbols]

 B: Centering jig 20: Guide rail 40: Main body 42: Chuck 43: Gauge 53: Notch 54, 54a: Mark 55: Positioning hole 56, 57: Scale 58: Disk 59: Bolt 70: Core Outgoing reference line 71: Guide part

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Kunio Shigematsu 2-4-1 Nishi Shinjuku, Shinjuku-ku, Tokyo Shinjuku NS Building Japan Otis Elevator Co., Ltd. F-term (reference) 3F305 BD01 DA08 DA21

Claims (3)

[Claims] 1. A guide to be vertically suspended in a hoistway, with a gauge portion having a guide portion for engaging a pair of right and left centering reference lines temporarily suspended in the hoistway when the elevator is installed. A centering jig in which chuck portions for holding and fixing the rail are provided on the other side surface, and both ends of a main body portion having a predetermined width, respectively, wherein the reference portion is provided around the concave portion and the periphery thereof. A centering jig comprising a plurality of linear marks intersecting extended lines, wherein the gauge portion is configured to be detachable from a main body portion. 2. The centering jig according to claim 1, wherein the recess comprises a U-shaped or isosceles triangle cutout. 3. The centering jig according to claim 1, wherein the gauge portion is formed of a transparent plate, and a scale crossing a scale provided on the main body is formed.