JPS6013121B2 - Elevator guide rail twist detection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for detecting torsion of an elevator guide rail.

As shown in FIGS. 1 and 2, this kind of torsion detection bag counterfeiting is based on a guide rail 1 consisting of a base where torsion is to be detected and a protrusion perpendicular to this base, mounted on a base 2. By bringing a pair of probes arranged at a predetermined interval in a direction perpendicular to the longitudinal direction of the guide rail 1 into contact with each other over the entire length of the bottom surface of the base extending in the longitudinal direction, changes in the position of the probes are measured. Twisting is detected based on the difference in the measured values by the constantr 3.

Therefore, it is necessary to move the guide rail 1 and the probe 3 relative to each other, and to store and calculate the measured values. To satisfy the former condition, a precise conveyance device is required to move either the guide rail 1 or the probe 3 without any movement error, and to satisfy the latter condition, manual calculation is required. Alternatively, if it is performed automatically, an expensive arithmetic device is required to calculate the three-dimensional shape. For this reason, the conventional torsion detection device described above has a momme point that makes it expensive and complicated. An object of the present invention is to provide an inexpensive guide rail for an elevator, which eliminates the drawbacks of the prior art described above and is capable of detecting not only the twisting of the guide rail but also the tilting of the neck with a simple mechanism to determine the quality of the guide rail. To provide a twist detection device.

In order to achieve this object, the present invention has a pair of bases that have a reference surface on which the guide rail is mounted and are arranged at a distance from each other, and a pair of bases that restrain the other end in the longitudinal direction of the guide rail. A device that tightly restrains the base bottom surface of one end of the guide rail so as to be free without being constrained to the reference surface of the one base, and one end of the guide rail in the longitudinal direction is free without restraint and the base bottom surface of the other end is tightly constrained to the other base. A device for closely restraining the base of one end of the guide rail in the longitudinal direction with respect to the reference plane of the base, and a device for restraining this one end. A first detection device detects the displacement of the bottom surface of the base of one end of the guide rail when the base is free, and the bottom surface of the base of either end of the guide rail in the longitudinal direction is aligned with the reference surface of the base. A second detection device detects the position of the side surface of the protrusion at one end when the guide rail is closely restrained, and the quality of the guide rail is determined based on the detection results of the first and second detection devices. The present invention is characterized in that it is equipped with a device for detecting the twisting and tilting of the neck to determine the quality of the elevator guide rail.The twisting detection principle of the present invention is shown in FIGS. 3 and 4. As shown in the figure, when a twisted guide rail is re-laid on a flat base 4, and the base bottom surface of one end is closely restrained to the base 4 with a pusher 5, etc., and the other end is left free to be restrained, This method takes advantage of the property that the bottom surface of the base is not parallel to the base 4, and by detecting the displacement from the base 4, the position where the bottom surface of the base at the other end should be parallel is determined. Twisting can be detected.

An embodiment of the present invention will be described below with reference to FIGS. 5 to 8.

In these figures, 1 is a guide rail consisting of a base of the object to be detected and a protrusion perpendicular to the base, 6 is a pair of carrying devices, 7 is a moving base having a reference surface 7a, and a handle 8
By rotating the screw thread 9, it can be moved in the longitudinal direction of the guide rail 1 along a pair of guide punches 101.

This moving base 7 has a pusher 1 for longitudinal positioning.
1, width direction positioning pusher 12, width direction stopper 1
3. A pair of restraint pushers 14 and 15 arranged in the width direction of the guide rail 1, and a pair of torsion detection heads 16 and 17 made of a differential transformer, a magnetic scale, etc. arranged on the opposite side of the restraint pushers. is installed.

Note that the widthwise position of the widthwise stopper 13 can be adjusted by a handle 18. 19 is moving base 7
A fixed base having a reference surface 19a installed opposite to the fixed base 19, which includes a longitudinal positioning pusher 11 and a corresponding longitudinal positioning stopper 20,
Width direction positioning pusher 1 similar to the moving base side
2, width direction stopper 3, pair of restraint pushers 21,
22, and a pair of neck inclination detection heads 24, which are supported by a support 23 and are made up of an inset transformer, a magnetic scale, etc.
25 is installed.

Further, 26 is a pair of rollers that move the guide rail 1 in the vertical direction, 27 is a cylinder thereof, and 28 is a support part 2 at one end.
The lever is rotatably supported by a lever 9, which is rotated by the drive of a cylinder 30 mounted on a support base 31, and moves the guide rail 1 on the roller 26 in the width direction at the other end to move the lever inside the fence 32. It is designed to be dropped. Reference numeral 33 denotes a calculation section for detecting torsion, numeral 34 a calculation section for detecting neck tilt, and numeral 35 a pass/fail determination section.

In the torsion detection device detected in this way, when detecting the torsion of the guide rail, first the loading device 6
By operating the pusher 11 for longitudinal positioning of the movable base 7, which has been positioned in advance at a predetermined position, the guide rail 1, which is the object to be detected, is moved longitudinally to the fixed base 19. The longitudinal positioning stopper 201 is pressed to determine the longitudinal positioning.

After the longitudinal positioning pusher 11 returns to its original position, the guide rail 1 is carried onto the rollers 26 by the carrying device 6, the loaf 26 is lowered by the cylinder 27, and the guide rail 1 is moved to the moving base 7 and A layer is placed on the reference surfaces 7a and 19a of the fixed base 19. Next, the widthwise positioning pusher 12 is operated to press the guide rail 1 against the widthwise stopper 13 that has been positioned at a predetermined position, thereby positioning the guide rail 1 in the widthwise direction.

The guide rail 1 after this positioning is shown by a chain line in FIGS. 5 and 6. When the lateral positioning pusher 12 returns, the pair of restraint pushers 14 and 15 on the movable base 7 side operate to tightly restrain the base bottom surface of one end of the guide rail 1 on the reference surface 7a.

Then, the position of the base bottom surface of one end of the guide rail 1 at this time is measured by a pair of torsion detection heads 16 and 17.
After the measurement, the restraint pushers 14 and 15 return, and the pair of restraint pushers 21 and 22 on the fixed base 19 side operate to align the base bottom surface of the pond end of the guide rail 1 with the reference plane 19.
Closely restrain it to a.

At this time, one end of the guide rail 1 is free to be restrained,
Since this base bottom surface position changes, this base bottom surface position is measured by the torsion detection heads 16 and 17, and based on this value and the measured value when closely restrained to the reference surface 7a, torsion is detected and pass/fail is determined. do. Further, when the base bottom surface of the pond end of the guide rail 1 is closely restrained on the reference surface 19a of the fixed base 19 in this way, the base bottom surface of the pond end of the guide rail 1 is in a positioned state, so that the bottom surface of the base By abutting a pair of neck tilt detection heads 24 and 25 against the side surface of a vertical protrusion and measuring the rain position, neck tilt can be detected at the same time as the above-mentioned torsion detection, and whether the result is acceptable or not can be determined. can.

After these pass/fail judgments, the restraining pushers 21 and 22 are returned to their original positions, and the rollers 26 are raised by the cylinders 27 to return the guide rail 1 to the position immediately after being carried in, and based on the pass/fail judgment results, Acceptable products are moved in the longitudinal direction by the drive of the roller 26 and sent to the next process, while rejected products are moved in the width direction by the rotation of the lever 28 as the cylinder 30 is driven, as shown in FIG. and drop it into the fence 32. The above twist detection and neck tilt detection operations will be explained in more detail with reference to FIG.

As mentioned above, the restraining pusher 1 on the movable base 7 side
4 and 15 to closely restrain the base bottom surface of one end of the guide rail 1 to the reference surface Ryoa, the torsion detection heads 16 and 17 will be in the state shown by the solid line in FIG. 8, and the position of the base bottom surface of the one end will be The measured values L and R are detected and commanded to the calculation section 33.

Next, when the restraining pushers 21 and 22 on the fixed base 19 side are operated to closely restrain the bottom surface of the base of the other weaving part of the guide rail 1 to the reference surface 19a, one end of the guide rail 1 is twisted and the eighth Since the position changes as shown by the dashed-dotted line in the figure, the torsion detection heads 16 and 17 also change to the position shown by the dashed-dotted line in accordance with the change in the position of the base surface. The measured values L2 and R2 are detected and commanded to the calculation section 33. The twist detection calculation unit 33 calculates A in the following equation '1' and instructs the pass/fail determination unit 35 to calculate A.

The pass/fail determining unit 35 determines whether this value A satisfies the following formula (2) with respect to a predetermined allowable amount K, and instructs the unloading mechanism to receive the result. A=l(}-L,)-(R2-R,
)l...{11A≦=K
...■ Also, as described above, when the restraining pushers 21 and 22 on the fixed base 19 side are operated, the reference surface 19a
The upper guide rail 1 is positioned as shown by the solid line in FIG.

At this time, the head level detection heads 24 and 25 detect the measured values U and D of the surface position by following and touching one side surface of the protrusion perpendicular to the base bottom surface of the guide rail 1, This is commanded to the calculation unit 34. The neck rot detection calculation unit 34 calculates B of the rigid equation below and instructs the pass/fail determination unit 35 to calculate it.

The pass/fail determining unit 35 determines whether this value 8 satisfies the following formula 41 for the given allowable value date, and instructs the unloading mechanism to receive the result. B=IU-DI
...[3}BSH...■ As described above, according to this embodiment, it is possible to detect the twist of the guide rail 1 and determine whether it passes or fails, and at the same time, it is also possible to detect the neck tilt and determine whether it is pass or fail. Everything up to the next step, which is determined based on the results, can be carried out automatically.

In the above embodiment, the neck tilt detection heads 24 and 25 are provided only on the fixed base 19 side to detect neck tilt only at the end of the guide rail 1. If it is also provided on the movable base 7 side, it is possible to detect neck deflection at both ends of the guide rail 1, and it is possible to improve detection accuracy.

As explained above, according to the present invention, a pair of bases each having a reference surface on which a guide 0 rail is placed and arranged at a distance from each other and the other longitudinal end of the guide rail are restrained. a device that closely restrains the base bottom surface of one end of the guide rail so as to be free without being restrained with respect to the reference surface of the one base; and one end of the guide rail in the longitudinal direction is free without being restrained and the base bottom surface of the other end is tightly restrained with respect to the reference surface of the other base. A device for closely restraining the base of one end of the guide rail in the longitudinal direction with respect to the reference plane of the base, and a device for restraining this one end. a first detection device that detects the displacement of the bottom surface of the base of one end of the guide rail when it is free without any movement; A second detection device detects the position of the side surface of the protrusion at one end when the guide rail is closely restrained, and the quality of the guide rail is determined based on the detection results of the first and second detection devices. The system is equipped with a device that detects twisting and tilting of the guide rail to determine whether the guide rail is good or not. Therefore, it becomes possible to provide this type of elevator guide wheel torsion detection device at a low cost.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a conventional twist detection diamond layer, FIG. 2 is a sectional view taken along line A-A in FIG. 1, FIG. 3 is a front view for explaining the twist detection principle of the present invention, and FIG. The figure is the same side view, 5th
The figure is a plan view of a twist detection device according to an embodiment of the present invention.
6 is a front view of the same, FIG. 7 is a partially enlarged view of FIG. 6 viewed from the direction of arrow B, and FIG. 8 is an explanatory diagram for explaining twist detection and neck tilt detection operations. 1... Guide rail 7... Moving base, 7
a...Reference surface, 14, 15...Moving base side restraining pusher, 16, 17...Twist detection head, 19...Fixed base, 19a...Reference surface, 21
, 22...0 Fixed base side restraining pusher, 24
, 25... head for detecting neck inclination, 33, 34...
...Arithmetic section, 35... Pass/fail judgment section. 1 figure, 2 figures, 3 figures, 4 figures, 5 figures, 68 figures, 7 figures, 8 figures

Claims (1)

[Claims] 1. A device for detecting torsion of an elevator guide rail consisting of a base and a protrusion perpendicular to the base, comprising a pair of bases having a reference surface on which the guide rail is placed and arranged at a distance from each other; A device for closely restraining the base bottom surface of one end of the guide rail with respect to a reference surface of the one base while leaving the other end of the guide rail free in the longitudinal direction without being restrained; a device for tightly restraining the bottom surface of the base at the other end with respect to the reference surface of the other base; and a device tightly restraining the bottom surface of the base of either longitudinal end of the guide rail against the reference surface of the base and a first detection device that detects displacement of the base bottom surface of this one end when the one end is free without restraint, and one end of the guide rail in the longitudinal direction. a second detection device for detecting the position of the side surface of the protrusion at one end when the bottom surface of the base of the portion is closely restrained with respect to the reference surface of the base; and the first and second detection devices 1. A torsion detection device for an elevator guide rail, comprising: a device for determining the quality of the guide rail based on the detection result.