JPH0859133A - Elevator guide rail centering precision measuring device and centering precision measurement using this device - Google Patents

Abstract

PURPOSE: To quantitatively measure a positional relation between a guide rail and a measuring base line from moving quantity of a movable detection means by way of automatically detecting the measuring base line by means of using the movable detection means free to move longitudinally and to improve precision and efficiency of measurement. CONSTITUTION: A device main body 2 is fixed on a guide rail A by an adjusting nut 6 provided on the device main body 2. A pair of measuring base lines B1, B2 is detected by a pair of movable detecting bodies 16a, 16b provided in parallel with each other on the device main body 2 and free to move longitudinally. Additionally, another movable detecting body 16c is provided free to move longitudinally on the device main body 2 so as to be orthogonal with one of a pair of the movable detecting bodies 16a, 16b. Furthermore, each of the movable detecting bodies is moved longitudinally by each of moving means consisting of revolving direct acting converters 17a-17c, etc. Additionally, a control means 20 controls each of the moving means, each of moving quantity measuring means measures measuring quantity of each of the transferable detecting bodies and displays the measured moving quantity.

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 accuracy measuring device and a centering accuracy measuring method using this device.

[0002]

2. Description of the Related Art Generally, an elevator guide rail for guiding a car or a weight of an elevator is installed in a hoistway of a building in order to reduce vibration and noise when the elevator is moved up and down and to operate the elevator smoothly and safely. (Hereinafter referred to as "guide rail") is installed vertically. A guide rail having such a purpose is required to have a high centering accuracy at the time of installation, and further, the centering accuracy needs to be maintained for a long period of time.

A conventional guide rail centering accuracy measuring device (hereinafter referred to as "centering accuracy measuring device") is constructed as shown in FIG. In FIG. 11, reference numeral A indicates a guide rail, and a pair of measurement reference lines B1 and B2 are vertically provided along the guide rail A at a predetermined interval in the vicinity of the guide rail A. The guide rail A is provided with a centering accuracy measuring device indicated by reference numeral a as a whole, and the centering accuracy measuring device a has a measuring reference line B.
1, a device main body b having a reference surface b1 that abuts on B2. An angle-shaped measurement reference portion c having a measurement reference surface c1 that abuts on one track surface A1 of the guide rail A is fixed to an intermediate portion of the apparatus main body b. A bracket d is erected on one end of the apparatus main body b, and a pressing bolt e is screwed through the bracket d toward the measurement reference plane c1.

When the centering accuracy of the guide rail is measured by using this conventional centering accuracy measuring device, the measurement reference surface c1 of the measurement reference portion c is brought into contact with one track surface A1 of the guide rail A. After the contact, the pressing bolt e is screwed in and pressed against the other track surface A2 of the guide rail A.
Here, when the guide rail A is attached at a regular position, the reference plane b1 of the device body b does not displace the measurement reference lines B1 and B2 with respect to the measurement reference lines B1 and B2. Abut. On the other hand, when the guide rail A is misaligned or twisted, a gap is formed between the reference plane b1 and the measurement reference lines B1 and B2, or the measurement reference lines B1 and B2 are pushed and displaced. I will let you. When such misalignment or twisting occurs, the guide rail A is temporarily unfixed from the hoistway, and the reference surface b1 of the apparatus body b with respect to the measurement reference lines B1 and B2. The measurement reference lines B1 and B2 are adjusted so as to be brought into contact with each other without displacement, and then fixed again.

Another conventional centering accuracy measuring device having a simpler structure is shown in FIG. 12
The centering accuracy measuring device indicated by reference numeral f in FIG. 1 includes a flat device main body g having a horseshoe shape as a whole, and the device main body g has a holding portion h for holding the guide rail A. A reference measurement portion i through which the measurement reference line B passes is formed at the rear end of the sandwiching portion h.

When the centering accuracy of the guide rail is measured by using this conventional centering accuracy measuring device f, the gripping part h is set on the guide rail A so that the measurement reference line B is set in the reference measuring part i. Fit in. Here, when the guide rail A is attached at the proper position, the measurement reference line B
Is within the allowable range indicated by the symbols α and β in FIG. 12 of the reference measuring unit i. On the other hand, when the guide rail A is misaligned or twisted, the measurement reference line B deviates from the allowable ranges α and β of the reference measurement section i. When such misalignment or twisting occurs, the guide rail A is temporarily unfixed from the hoistway, and the measurement reference line B is set within the allowable ranges α and β of the reference measurement section i. After adjusting, fix it again.

Another conventional centering accuracy measuring device is shown in FIG. The centering accuracy measuring device indicated by reference numeral j in FIG. 13 is attached to a rigid body which is straightly extended along the track surface of another guide rail (not shown) facing the guide rail A to be measured. The apparatus main body k is provided with the gauge main body k, a gauge 1 provided so as to abut the track surface A2 with respect to the apparatus main body k, and a gauge pointer m indicating a position where the gauge 1 should come.

When the centering accuracy of the guide rail is measured using this conventional centering accuracy measuring device j, the track surface A2 is extended by bringing the gauge 1 into contact with the track surface A2 of the guide rail A. While checking the installation state with the gauge pointer m, the gap between the gauge 1 and the gauge pointer m is shown in Fig. 1.
3. The misalignment and twist of the guide rail A are adjusted so as to fall within the allowable range indicated by the symbol γ.

[0009]

However, the above-mentioned conventional centering accuracy measuring device is operated manually, and the measurement is performed with high accuracy in visual measurement at a high place in a dark hoistway. You can't expect.
Further, in manual measurement, an accurate measurement cannot be performed because an individual error occurs due to the habit or character of the worker. Furthermore, it is necessary to perform measurement by the same operator in order to mitigate the influence of individual error by the operator. That is, even if an installation error occurs in the guide rail due to an individual error, twisting and misalignment of the entire guide rail occur substantially uniformly as long as the same operator performs the installation work. If the twisting and misalignment are uniform as described above, even if the installation position of the guide rail is slightly deviated from the regular reference position, there is no great obstacle to the operation of the elevator. However, working in high places in a dark hoistway places a heavy burden on the operator, and since the work content is extremely monotonous, when the same operator performs measurement work for a long time, Work efficiency is inevitably reduced. Further, the conventional centering accuracy measuring device cannot perform quantitative measurement. Therefore, it is difficult to determine whether or not the guide rail should be reattached during maintenance and inspection or when a failure occurs.

The present invention solves the above-mentioned problems, can quantitatively measure the centering accuracy of an elevator guide rail, and can accurately and efficiently measure the elevator guide rail centering accuracy measuring apparatus and the apparatus. It is an object to provide a centering accuracy measuring method used.

[0011]

In order to achieve the above object, an elevator guide rail centering accuracy measuring apparatus according to the present invention is provided with an apparatus body and the apparatus body provided on the apparatus body and fixed to the guide rail. A fixing means, a pair of movable detecting means provided on the apparatus main body in parallel with each other, movable in the front-rear direction, and detecting a pair of measurement reference lines;
Other movable detecting means provided on the main body of the apparatus so as to be movable back and forth so as to be orthogonal to one of the pair of movable detecting means, moving means for moving the movable detecting means forward and backward, and moving Control means for controlling the means, each movement amount measuring means for measuring the movement amount of each movement detecting means, and display means for displaying the movement amount measured by each movement amount measuring means. It is what

Further, it is preferable that the fixing means comprises a rolling means having a portion which is rotatably abutted on the guide rail and a magnet for attracting the guide rail.

Further, it is preferable that the fixing means has fixing releasing means for releasing the fixing by remote control.

Further, in the method for measuring the centering accuracy of an elevator guide rail according to the present invention, the apparatus for measuring the centering accuracy of the elevator guide rail is attached to the guide rail by the fixing means so that the apparatus can be moved up and down to move the guide rail up and down to a predetermined position. The first step, the second step of fixing the apparatus main body to a predetermined position on the guide rail by the fixing means, the third step of detecting the pair of measurement reference lines by the movable detecting means, and the fixing releasing means. It is characterized in that it comprises a fourth step of releasing the fixing of the apparatus main body to the guide rail, and the first to fourth steps are sequentially repeated to perform a series of measurement work automatically or semi-automatically.

[0015]

As described above, in the present invention, the main body of the apparatus is fixed to the guide rail by the fixing means, and the detector is moved forward by using the moving means controlled by the control means, and the detector detects the measurement reference line. Stop the forward motion at the time point, measure the movement amount of the movement detection means at this time by the movement amount measuring means,
The centering accuracy of the guide rail is measured by displaying the measured value on the display means.

Further, the device main body can be moved up and down on the guide rails by the rolling means provided in the fixing means, and the device main body is surely attracted to the guide rails by the magnet for attraction so that the device main body does not fall off during the vertical movement. .

Further, the fixing releasing means remotely releases the fixing of the apparatus main body to the guide rail.

Further, the elevator guide rail centering accuracy measuring device is moved up and down on the guide rail to be aligned with a predetermined position, the device body is fixed to the guide rail by the fixing means, and the measurement reference line is detected by the movable detecting means. ,
The fixation releasing means releases the fixation of the apparatus main body, and these steps are sequentially repeated to perform a series of measurement operations automatically or semi-automatically.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral A indicates a guide rail, which is fixed by a bracket C and a rail clip D. A pair of measurement reference lines B1 and B2 are stretched vertically on both sides of the guide rail A. These measurement reference lines B1 and B2 are composed of, for example, a stainless steel wire rod having a diameter of about 0.5 mm.

An elevator guide rail centering accuracy measuring apparatus (hereinafter referred to as "centering accuracy measuring apparatus") indicated by reference numeral 1 is attached to the guide rail A, and the centering accuracy measuring apparatus 1 is attached. Is provided with a main body 2, and a grip portion 3 is provided at the center of the main body 2. The grip portion 3 is provided so as to surround both track surfaces A1 and A2 of the guide rail A and the cutting edge surface A3. A pair of rolling rollers 5 and 5 are provided at the upper and lower ends of the angle 4, and these rolling rollers 5 and 5 are rotatably abutted on the cutting edge surface A3 of the guide rail A. Also,
On one side of the angle 4, as shown in FIG.
An adjusting screw 7 to which an adjusting nut 6 is screwed is planted outward. An auxiliary plate 8 is fitted into the adjusting screw 7, and a pair of sliding shafts 9 are projectingly provided at opposite end portions of the auxiliary plate 8 in a direction opposite to the adjusting screw 7. Coil springs 10 and 10 are fitted into these sliding shafts 9 and 9. Also, the sliding shafts 9 and 9 are angle 4
To the pair of holes formed in the side wall of the solid lubricating bearings 11, 11
It is slidably fitted through. Further, a pressure contact plate 12 is attached to the tip ends of the sliding shafts 9, 9, and the pressure contact plate 12 is a reference surface 4 a forming a part of the inner side surface of the angle 4.
Facing.

Further, on the upper and lower surfaces of the main body 2 of the centering accuracy measuring device 1, there are linear guides 13a, 13b with air cylinders,
13c includes two on the upper surface and one on the lower surface, and measurement reference lines B1 and B
It is provided for 2. These linear motion guides 13
As for a, 13b, and 13c, as shown in FIG. 3, the linear motion guides 13a and 13b provided on the upper surface are arranged in parallel with each other, and the linear motion guide 13c provided on the lower surface is provided on the upper surface. It is arranged so as to be orthogonal to one of the linear motion guides 13a. Each linear motion guide 13a, 13b, 13c
The linear motion slide bodies 14a, 14b, 14c are slidably fitted in the front and rear of the linear motion slide bodies 14a, 1b.
The air cylinders (not shown) of the linear motion guides 13a, 13b, 13c press the parts 4b, 14c rearward. A contact 15 is attached to the linear motion sliding bodies 14a, 14b, 14c.
Movable detectors 16a, 16 having a, 15b, 15c
b and 16c are fixed. The movable detector 16
The a, 16b and 16c are formed of a material such as Bakelite. Each movable detector 16a, 16b, 1
Rotation / linear motion converters 17a, 17b, 17c are provided on the main body 2 of the centering accuracy measuring device 1 behind 6c,
The operation end 18 of each rotation / linear motion converter 17a, 17b, 17c
a, 18b and 18c are movable detectors 16a, 16b and 1
It is in contact with the rear end of 6c. The rotation / linear motion converter 1
Micrometer heads and the like are used for 7a, 17b, and 17c. Each rotation / linear motion converter 17a, 17b, 17
A rotating machine (not shown) such as a servomotor is attached to the rotating shaft (not shown) of c. Further, a joint box 19 is provided at the side end of the lower surface of the main body 2 of the centering accuracy measuring device 1 (see FIG. 1), and the main body of the contact sensor (not shown) is provided in the joint box 19. It is stored. Contactors 15a, 15b, 15c are connected to the main body of the contact sensor via cables. Each rotating machine is connected to a control box 20 having a counter display (not shown) via a cable. The counter display shows the operation amount of each rotating machine.

The operation of this embodiment will be described below.
The operator holds the device main body 2 of the centering accuracy measuring device 1 and gets on a car main body or a gondola (not shown),
Move the car body up and down to the measurement location. The grip portion 3 of the device body 2 is fitted into the guide rail A, and the device body 2 is moved up and down while rolling the rolling rollers 5 and 5 to align the vertical direction with an arbitrary position defined as a reference. After the reference surface 4a is aligned with one track surface A2 of the guide rail A, the adjusting nut 6 is screwed in and the pressure contact plate 12 is pressed against the other track surface A1. Fix it.

Then, a switch (not shown) of the control box 20 is turned on to issue a command to start the measurement. As a result, a rotary machine (not shown) of the rotation / linear motion converters 17a, 17b, 17c is activated, and the movable detectors 16a, 16b, 16c are pushed forward through the operation ends 18a, 18b, 18c. The movable detectors 16a, 16b, 16c move forward until the contacts 15a, 15b, 15c come into contact with the measurement reference lines B1, B2 and a contact sensor (not shown) operates. When the contact sensor operates, the counter display of the control box 20 is fixed, and the rotation / linear motion converter 17
The rotating machine of a, 17b, 17c rotates in the reverse direction and the operating end 18
a, 18b, 18c retreat, the movable detectors 16a, 16c
b and 16c are pulled back by the air cylinders of the linear guides 13a, 13b and 13c. By receiving the signal from each rotating machine and reading the operation amount of each rotating machine displayed on the counter of the control box 20, the measurement reference lines B1, B
The positional relationship between 2 and the guide rail A is measured. Finally, when the adjusting nut 6 is loosened, the coil springs 10 and 10 are extended, the press contact plate 12 is separated from the track surface A1 of the guide rail A, and the fixing of the apparatus main body 2 to the guide rail A is released.

The above steps are sequentially repeated at a plurality of points on the guide rail A, and the measured value at each measuring point and the measured value at the reference position are compared to detect misalignment or twist of the guide rail A at each measuring point. You can figure it out.

As described above, in this embodiment, the control box 20 is used.
It is possible to automatically detect the measurement reference lines B1 and B2 by turning on the switch and issuing a command to start the measurement. By reading the counter display value of the control box 20, the measurement reference lines B1 and B2 and the guide rails can be detected. Since the positional relationship with A can be measured, the centering accuracy of the guide rail A can be quantitatively measured, and the measurement can be performed accurately and efficiently. Also, the measurement reference line B
1 and B2 are detected by the contactors 15a and 15b of the contact sensor,
Since it is performed by 15c, it can be used even in a poor working environment without being affected by the dew condensation phenomenon or the disturbance of light, which is a problem when using a contour measuring instrument using a laser or the like.

In this embodiment, the adjusting nut 6 is screwed in to fix the apparatus main body 2 to the guide rail A. Instead of the adjusting nut 6, a lever having a screw hole is used. You can also When such a lever is used, a tool or the like for turning the screw is unnecessary. Further, in this embodiment, the measurement reference lines B1 and B
The position relationship between 2 and the guide rail A is determined by the rotary / linear converter 17
Although the measurement is performed by the signals sent from the rotating machines a, 17b, and 17c to the control box 20, it is also possible to attach an encoder to the rotating machine and calculate the positional relationship based on the output value of the encoder. Further, it is also possible to use a contour measuring device using laser light instead of the contact sensor, and in this case, continuous measurement can be performed.

Next, another embodiment of the present invention will be described with reference to FIGS. As shown in FIG.
An angle 21 having a U-shaped cross section provided in the device body 2 is fitted into the guide rail A.
A fixing bolt 23 having an operating lever 22 penetrates and is screwed to one side wall of the. This fixing bolt 23 is shown in FIG.
As shown in FIG. 5, the tip end portion 23a of the guide rail A, which is in contact with the one track surface A2, is configured to be automatically aligned, and for example, a clamping bolt is used. As shown in FIGS. 5 and 6, reference surface plates 24, 24 are provided with screws 25, 25, 2 on the inner surface of the angle 21 facing the tip of the fixing bolt 23.
5 and 25 are attached. In addition, a pair of attraction magnets 26, 26 are embedded in the side wall of the angle 21 to which the reference surface plates 24, 24 are attached, and a stop plate 27 is provided.
Is fixed by. A pair of attraction magnets 28, 28 are vertically embedded in the side wall of the angle 21 facing the blade tip surface A3 of the guide rail A, and fixed by a stop plate 29. A pair of ball bearings 30, 30 are embedded above and below the attraction magnets 28, 28 so as to be in contact with the cutting edge surface A3 of the guide rail A and to roll.

Next, the operation of the above embodiment will be described.
First, the angle 21 is fitted into the guide rail A, and the ball bearings 30 are brought into contact with the blade tip surface A3 of the guide rail A by utilizing the attraction force of the attraction magnets 28.
The apparatus main body 2 is moved up and down while rolling the ball bearings 30, 30 to be aligned with a predetermined position. Next, using the attraction force of the attraction magnets 26, 26, the reference surface plate 24,
24 is brought into contact with one track surface A1 of the guide rail A.
Next, the operation lever 22 is rotationally operated to press the fixing bolt 23 against the other track surface A2 of the guide rail A, and the apparatus body 2 is fixed to the guide rail A in cooperation with the reference surface plates 24 and 24.

As described above, in this embodiment, the attraction magnet 26,
The suction force of 26, 28, 28 secures the fixing of the apparatus main body 2 to the guide rail A. Further, since the guide rail A is sandwiched by the fixing bolt 23 and the pair of reference plane plates 24, 24, the guide rail A can be reliably fixed by three-point support, and the guide rail A abuts on the track surfaces A1, A2. Since the portion to be covered is reduced, it is less likely to be affected by the surface accuracy of the raceway surfaces A1 and A2. Further, since the tip portion 23a of the fixing bolt 23 is self-aligned with the raceway surface A2, there is no fear of damaging the raceway surface A2. Further, since the device body 2 is fixed to the guide rail A by rotating the operation lever 22 of the fixing bolt 23, not only a tool or the like is not required for fixing, but also a large fixing force can be obtained with a relatively small force. can get.

In this embodiment, the fixing bolt 23 is used for fixing, but a toggle clamp mechanism using a clamp lever can be adopted. In this case, the fixing is performed by one operation. Can be completed.

Next, another embodiment will be described with reference to FIGS.
Will be described with reference to. In the present embodiment, the device main body 2 of the centering accuracy measuring device 1 is attached to the guide rail A so that the device main body 2 can be moved up and down, and the guide rail A is moved up and down to adjust it to a predetermined position.
Steps, a second step of fixing the apparatus main body 2 at a predetermined position on the guide rail A, a third step of detecting the pair of measurement reference lines B1 and B2, and a fixing of the apparatus main body 2 to the guide rail A. The fourth step is performed, and the first to fourth steps are sequentially repeated to perform a series of measurement operations automatically or semi-automatically.

The configuration of the apparatus for carrying out this embodiment is shown in FIG. In FIG. 7, a hanging rope 31 is attached to the apparatus main body 2 of the centering accuracy measuring apparatus 1 so that the hanging rope 31 can be hung at the center of gravity of the apparatus main body 2. A suspension rope 32 is connected to the center of the hanging rope 31, and the suspension rope 32 is wound around a hoist 35 such as a winch via pulleys 33 and 34. The pulley 33 is suspended by an annular supporting rope 37 that is hung on the undercarriage 36 of the elevator car body. The device body 2 is provided with a detection sensor (not shown) such as a lever-type limit switch for detecting the bracket C that fixes the guide rail A to the building. The device body 2 is connected to a control box (not shown) via a cable. This control box exchanges signals with the device body 2 to control the device and record a series of measurement data,
It has a display function.

As shown in FIGS. 8 to 10, an angle 39 having a U-shaped cross section of the grip portion 3 provided on the apparatus main body 2 is fitted into the guide rail A. A detachable block 42 having a pair of ball receivers 41 having a ball bearing 40 is provided on the side wall so as to be vertically removable through the pair of blocks. A solid lubrication bearing 43 is provided between the removable blocks 42, 42.
A rail abutting portion 44 having a self-aligning function is penetrated and slidably fitted through (see FIG. 9), and the rail abutting portion 44 is connected to an output shaft 46 of an air cylinder 45. ing. Compressed air is supplied to the air cylinder 45 via an air pipe (not shown). On the inner surface of the angle 39 facing the tip of the rail abutting portion 44, a pair of upper and lower convex portions 47 having a reference surface 47a are formed, and a ball bearing 48 is formed so as to penetrate these convex portions 47, 47. A pair of movable ball receivers 49, 49 having
Are vertically slidably fitted to each other via solid lubrication bearings 50, 50. Movable ball receivers 49, 49, 49,
Coil springs 51, 51, 51, 51 are in contact with the rear end of 49, and these coil springs 51, 51, 51,
51 is supported by support plates 52, 52. In addition, the angle 3 facing the cutting edge surface A3 of the guide rail A
As shown in FIG. 10, a pair of upper and lower ball bearings 53, 53 are embedded in the side wall of 9 so as to abut on the cutting edge surface A3 of the guide rail A and roll. A pair of upper and lower attraction magnets 54, 54 are vertically embedded between the ball bearings 53, 53, and fixed by a stopper plate 55.

Next, the operation of this embodiment will be described.
In the first step, first, the removable blocks 42, 42 of the apparatus main body 2 are removed, the grip portion 3 is fitted into the guide rail A, and then the removable blocks 42, 42 are attached again. Thereby, the coil springs 51, 51, 51, 51
Shrinks to such an extent that there is a slight gap between the reference surfaces 47a, 47a and one track surface A1 of the guide rail A,
The guide rail A is elastically clamped by the ball bearings 40, 40, 40, 40 and the ball bearings 48, 48, 48, 48. In addition, the suction magnets 54, 54
The angle 39 is attracted to the guide rail A side by the suction force, and the ball bearings 53, 53 are brought into contact with the guide rail A. In this way, the centering accuracy measuring device 1
Is attached to the guide rail A via the ball bearings 40, 48, 53 and is attracted to the guide rail A side by the magnets 54, 54 for attraction, so that the guide rail A can be lifted and lowered without falling off. Become. Next, the hoisting machine 35 is operated to raise and lower the apparatus main body 2 via the suspension rope 32 to align it with a predetermined position. Next, the control box (not shown) is turned on to rotate the hoist 35 to raise and lower the apparatus main body 2,
When the bracket C is detected by a detection sensor (not shown), the hoist 35 is stopped.

In the second step, the air cylinder 45 is operated by a signal from the control box to press the rail contact portion 44 against one track surface A2 of the guide rail A.
As a result, the movable ball receivers 49, 49, 49, 49 are pressed against the repulsive force of the coil springs 51, 51, 51, 51, and the reference surfaces 47a, 47a are pressed against the other track surface A1 of the guide rail A. Applied. As a result, the device body 2 is fixed at a predetermined position on the guide rail A.

In the third step, the linear sliding members 14a, 1
4b and 14c are moved forward to bring the contacts 15a, 15b and 15
The measurement reference lines B1 and B2 are detected by c, the positional relationship between the guide rail A and the measurement reference lines B1 and B2 is measured, and the measurement data is stored.

In the fourth step, the pressing of the rail abutting portion 44 against the guide rail A by the air cylinder 45 is released, and the fixing of the apparatus main body 2 to the guide rail A is released.
The above steps are sequentially repeated, and when the number of measurements reaches a preset number, the work is finished.

As described above, in this embodiment, the device main body 2 of the centering accuracy measuring device 1 can be moved up and down on the guide rail A without falling off from the guide rail A, and the device main body 2 can be guided by remote control. Since it can be fixed to the rail A, a series of measurement work can be automatically performed.

In this embodiment, the pulley 33 is hung by the annular supporting rope 37 hung on the undercarriage 36 of the car body of the elevator, but instead of this, the hoistway ceiling or It is also possible to suspend using a beam temporarily installed in the hoistway, and the suspension source can be selected. Further, the control box does not have to be in the vicinity of the apparatus main body 2 and can be placed on the car main body. Device body 2
If there is a limit to the cable routing between the control box and the control box, the control box can be hung on the suspension rope 32, and the device body 2 can be further hung below the control box. It is also possible to semi-automate the work by having the worker take charge of positioning of the ascending / descending position. In this case, the device main body 2 is directly hung on the undercarriage 36 of the car main body or is placed above the car. It is possible to mount the hoisting machine 35 directly, which eliminates the need for the hoist 35. It is also possible to store the measurement data in an IC card or the like, and in this case, the measurement data can be displayed by a display device which is separate from the centering accuracy measuring device 1 and thus the centering accuracy can be displayed. The accuracy measuring device 1 can be made lightweight and simple. Further, if a motor or the like is used instead of the air cylinder 45, compressed air becomes unnecessary, and all the operations can be performed only by the power supply. In addition, the device body 2
It is also possible to provide a switch in the vicinity of the elevating limit position of and to forcibly stop the measurement work by the operation of this switch, which improves the safety of the work.

[0040]

As described above, according to the present invention, the measurement reference line is automatically detected by using the movable detection means that can move back and forth, and the guide rail and the measurement reference line are detected based on the movement amount of the movable detection means. Since the positional relationship between and is measured, the centering accuracy of the elevator guide rail can be quantitatively measured and the measurement can be accurately and efficiently performed.

Further, since the device body can be moved up and down on the guide rail by the rolling means provided in the fixing means, and the device body can be surely fixed to the guide rail by the magnet for attraction. It is possible to perform a series of measurement work without removing the from the guide rail, so that the measurement work can be performed more efficiently.

Furthermore, since the fixing of the main body of the apparatus to the guide rail is released by remote control by the fixing releasing means, it is possible to perform a series of measurement work automatically or semi-automatically, and the measurement work can be performed safely and quickly. Can be done.

Further, since the series of measuring operations is automatically performed by using the centering accuracy measuring device, the series of measuring operations can be performed more safely and quickly.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an elevator guide rail centering accuracy measuring device according to the present invention.

FIG. 2 is a cross-sectional view of essential parts showing a grip of the device.

FIG. 3 is a plan view of the device.

FIG. 4 is a plan view showing another embodiment of the grip portion of the same device.

FIG. 5 is a front view showing the grip portion.

FIG. 6 is a side sectional view showing the grip portion.

FIG. 7 is a perspective view showing a state where a centering accuracy measuring device for carrying out the centering accuracy measuring method according to the present invention is attached to a guide rail.

FIG. 8 is a plan view showing a grip portion of the apparatus.

FIG. 9 is a front view showing a grip portion of the apparatus.

FIG. 10 is a side sectional view showing a grip portion of the apparatus.

FIG. 11 is a conventional elevator guide rail centering accuracy measuring device.

FIG. 12 is a conventional elevator guide rail centering accuracy measuring device.

FIG. 13 is a conventional elevator guide rail centering accuracy measuring device.

[Explanation of symbols]

 1 Elevator guide rail centering accuracy measuring device 2 Device body 3 Grips 4, 21, 39 Angle 5 Rolling roller 6 Adjusting nut 7 Adjusting screw 8 Auxiliary plate 9 Sliding shafts 13a, 13b, 13c Linear guides 14a, 14b, 14c Linear motion sliding body 15a, 15b, 15c Contactor 16a, 16b, 16c Movable detection body 17a, 17b, 17c Rotation / linear motion converter 19 Joint box 20 Control box 22 Operation lever 23 Fixing bolt 24 Reference surface plate 26, 28, 54 attraction magnet 30, 40, 48, 53 ball bearing 41 ball receiver 42 removable block 44 contact part 45 air cylinder 49 movable ball receiver 51 coil spring A guide rail B1, B2 measurement reference line

Claims (4)

[Claims] 1. An apparatus main body, fixing means provided on the apparatus main body for fixing the apparatus main body to a guide rail, and a pair of measurement references provided on the apparatus main body in parallel with each other and movable back and forth. A pair of movable detection means for detecting a line, another movable detection means movably provided in the front and rear direction on the apparatus main body so as to be orthogonal to one of the pair of movable detection means, and each of the movable detection means. Each moving means for moving back and forth, control means for controlling each moving means, each moving amount measuring means for measuring the moving amount of each movement detecting means, and moving amount measured by each moving amount measuring means are displayed. Elevator guide rail centering accuracy measuring device, comprising: 2. The fixing means comprises rolling means having a portion that is rollably brought into contact with the guide rail, and a magnet for attraction that attracts the guide rail. Elevator guide rail centering accuracy measuring device described. 3. The elevator guide rail centering accuracy measuring device according to claim 2, wherein the fixing means has a fixing releasing means for releasing the fixing by remote control. 4. An elevator guide rail centering accuracy measuring device as set forth in claim 3, wherein said fixing means is attached to said guide rail so as to be able to ascend and descend so as to move up and down on said guide rail to a predetermined position, and said first step. The second step of fixing the apparatus main body to a predetermined position on the guide rail by the fixing means, the third step of detecting the pair of measurement reference lines by the movable detecting means, and the apparatus main body to the guide rail by the fixing releasing means. 4. The elevator guide rail centering according to claim 3, further comprising a fourth step of releasing the fixation, wherein the first to fourth steps are sequentially repeated to perform a series of measurement operations automatically or semi-automatically. Elevator guide rail centering accuracy measuring method using accuracy measuring device.