JPH0152312B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an improvement in a centering device for a guide rail.

[Prior art]

Figures 1, 2, and 3 show conventional centering devices for guide rails, and the one indicated by 1 in the figures consists of a leg and a head drilled from the center of the leg, and has a T-shaped cross section. This guide rail for an elevator has a standard length of, for example, 5 m, and 1a is a recess formed at the lower end of this guide rail 1, 1b is a convex part formed at the upper end of this guide rail 1, and 2 is an end. This is a connecting plate (hereinafter simply referred to as a batten) that connects the pair of guide rails 1 whose portions are butted together via bolts 3. In the figure, 4 denotes a substantially U-shaped frame, 4a denotes a jack bolt screwed through the middle part of the frame located on one longitudinal edge side of the guide rail 1, and 4b denotes the other side of the guide rail 1. a gripping part located on the longitudinal edge side of the and gripping the same;
Reference numeral 5 denotes a straightedge for measuring the straight plane of the joint portion of the guide rail 1.

As shown in FIG. 3, the guide rail centering device configured as described above is mounted so as to surround the connecting portion of a pair of guide rails 1 whose longitudinal ends are abutted and temporarily tightened through the battens 2.

Then, while measuring the inclination angle (θ) of both guide rails caused by the distance S between the concave portion 1a and the convex portion 1b with the straightedge 5, the guide rail 1 is corrected by tightening the jack bolt 4a. After that, the battens 2 and the guide rails 1 are tightened and fixed with the bolts 3, thereby completing the connection of the pair of guide rails 1.

However, it is necessary to center the guide rail not only on the side surfaces of the guide rail but also on the top surface of the head of the guide rail. Conventionally, the top surface of the head was measured each time the liner was inserted into the guide rail, which posed the problem of requiring a lot of time for centering.

[Summary of the invention] This invention was made in view of the above problems.
The purpose of this invention is to center the guide rail with high precision by pressing the straightedge against at least two points, the side surface of the guide rail and the end surface perpendicular to the side surface.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 4 to 7. Reference numeral 6 denotes a circular gripping body, into which the head of the guide rail 1 is pushed and a mounting screw 6d is inserted.
It is locked by. Reference numeral 6I denotes a locking portion provided on the grip 6, and in this embodiment, a collar provided along the outer periphery of the grip 6 is used. 6a is a moving frame that moves by engaging with the collar 6I. 6b is a roller mounted so that the moving frame 6a moves smoothly. 8 is a spring plunger screwed onto the moving frame 6a and containing a spring material; 9;
Reference numerals a to 9c are stopper holes drilled at three locations at positions 1/4 of the way around the collar 6I of the gripping body 6. 6C
6F is a guide plate formed to insert the straight edge 5, 6G is an elongated hole provided in the guide plate 6F, and 6H is a connection between this elongated hole 6G and the straight edge 5. 6E is a screw hole drilled in the support 6C, 10 is a spring inserted into the screw hole 6E,
A bolt 11 is screwed into the screw hole 6E and presses the straightedge 5 from the side via a spring 10.

That is, as shown in FIG. 4, the centering device for the guide rail 1 attaches the gripping body 6 to the connecting portion of a pair of guide rails 1 whose longitudinal ends are abutted and temporarily tightened through the batten 2, using a mounting screw 6d. It is attached by fixing the

First, the tip 8a of the spring plunger 8 is engaged with the stopper hole 9a, and the straightedge 5 is made to hang down along one side of the head of the guide rail 1. At this time, by pushing the side of the straight edge 5 with the bolt 11, they are brought into close contact as shown in FIG. 8a. Assuming that the upper and lower guide rails 1 are bent in a reverse dogleg shape, the inclination angle α can be adjusted by placing the straightedge 5 along them.
can be easily seen visually. In order to correct this inclination, tighten the jack bolt 4a shown in FIG. By this tightening, the guide rail 1 moves using the grip portion 4b as a fulcrum and performs centering.

Next, the straightness of the top surface of the head of the guide rail 1 is examined. The moving frame 6a is turned 90 degrees to engage the tip 8a of the spring plunger 8 with the stopper hole 9b, and the straight edge 5 is suspended along the top surface of the guide rail 1. At this time, use the bolt 11 to press the side of the straightedge 5 so that it is tightly attached as shown in FIG. 8b.
Assuming that it is bent in a dogleg shape as shown in the figure, the inclination angle β can be easily checked visually by running a straightedge along it. Correcting and centering are performed by inserting liners (not shown) into the legs of the guide rail 1.

According to the embodiment described above, the straightedge 5 easily moves along the collar 6I and is pressed against the head side and top surface of the guide rail 1, so that the straightness can be checked from the two sides.

When the movable frame 6a is further turned 90 degrees to engage the tip 8a of the spring plunger 8 with the stopper hole 9c, the straight edge 5 hangs down along the other side of the guide rail 1, as shown in FIG. 8c. Generally, the straightedge 5 becomes deformed due to long-term use. For this reason, measuring only one side of the guide rail 1 may not be sufficient. Even in this case, guide rail 1
Highly accurate centering can be achieved by measuring on both sides. In particular, since the flange 6I is circular, the straightedge 5 moves along the flange 6I, and the edge in contact with one side of the guide rail 1 also comes into contact with the other side. Therefore, if the straightedge 5 is deformed, the deformation can be easily discovered, and even if the straightedge 5 is deformed, accuracy can be improved by centering the straightedge 5 by taking into account the amount of deformation.

Although the brim 6I is shown as a continuous integral piece, it may be provided piecemeal only at required locations.

〔Effect of the invention〕

As described above, this invention provides at least two joints, one on the side of the head and the other end on the opposite side of the leg, at the joint where the leg and the guide rail consisting of the head protruding from the center of the leg are joined. Since the straight edge is pressed against the guide rail, the guide rail can be centered with high precision.

[Brief explanation of drawings]

1 to 3 show a conventional guide rail centering device, FIG. 1 is a front view showing a joint of the guide rail, and FIG. 2 is a perspective view showing a frame that applies an external force to the guide rail. FIG. 3 is a front view showing the working state of centering, FIGS. 4 to 7 show an embodiment of the present invention, and FIG. 4 is a perspective view showing the centering device mounted on the guide rail. 5 is a plan view of the centering device, FIG. 6 is a front view of the centering device, FIG. 7 is a sectional view of FIG. 6-, and FIGS. 8a, b, and c are explanatory views. DESCRIPTION OF SYMBOLS 1... Guide rail, 2... Connecting plate, 5... Straight edge, 6... Gripping body, 6a... Moving frame, 6b...
Roller, 6d...Mounting screw, 6I...Brim (locking part), 8...Spring plunger, 9...
Stopper hole, 10... Spring, 11... Bolt,
Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] 1 A joint where two guide rails with a T-shaped cross section are joined, consisting of a flat plate leg and a head drilled from the center of the leg, and an external force is applied in a direction perpendicular to the longitudinal direction of the guide rail. The guide rail is centered so that the guide rail is joined in a straight line, and the edge is formed in a straight line, and this edge is provided with a spring material at a portion corresponding to both ends of the guide rail at the joint part. and a gripping body that is locked to the guide rail near the joint, and the gripping body is provided with at least two locking parts for locking the straightedge. A guide rail centering device characterized in that the straightedge is pressed against a side surface of the head and an end surface on the side opposite to the leg.