JPH0518366Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an improvement of an installation accuracy measuring device that automatically measures the installation accuracy of an elevator with respect to a guide rail.

[Conventional technology]

BACKGROUND ART Conventionally, as an apparatus for automatically measuring the installation accuracy of an elevator with respect to a guide rail, an apparatus having a configuration shown in FIG. 6, for example, has been proposed.

Hereinafter, a conventional guide rail installation accuracy measuring device will be explained with reference to FIG. In the figure, 1a, 1
b is a guide rail of the elevator, which is fixed to, for example, a side wall of the hoistway. Reference numeral 2 denotes a main rope suspended from a hoisting machine (not shown), and a car frame 3 is suspended from one end of the main rope, and a car 4 is assembled inside the main rope. Guide shoes 5a to 5d are attached to the car frame 3 so as to come into sliding contact with the guide rails 1a and 1b. Furthermore, a pair of step-shaped mounting fittings 7 are removably attached to the upper part of the car frame 3, and detectors 6a and 6b are attached to the mounting fittings 7, respectively. Here, the detectors 6a, 6b are provided with a contactor 7a, which is provided with a roller at its tip that rolls in contact with the guide rails 1a, 1b.
7b, and outputs a voltage proportional to the amount of movement of the contacts 7a, 7b. Reference numeral 8 denotes a calculation display device that calculates and displays the voltage signals output from the detectors 6a and 6b, and 9 a recording device that records the output signals of the detectors 6a and 6b and the calculation results of the calculation display device 8. It's becoming like that.

In the device configured in this way, the main rope 2
When the main rope 2 is lifted up by a hoist, for example, the car frame 3 suspended from the main rope 2 rises in the hoistway. In this case, the guide shoes 5a to 5d fixed to the car frame 3 are the guide rails 1a,
Since the car frame 3 is in sliding contact with the guide rails 1b, the car frame 3 is guided by the guide rails 1a and 1b and moves. When the car frame 3 moves in this way,
Contactors 7a and 7b, which have rollers at their tips that roll in contact with guide rails 1a and 1b, move according to the positions of guide rails 1a and 1b. As a result, voltage signals corresponding to the amount of movement of the contacts 7a, 7b are output from the detectors 6a, 6b. And these detectors 6a, 6b
The output signal generated from the is displayed by being supplied to the arithmetic display device 8, and both signals are added and the result of this addition is displayed on the guide rails 1a and 1a.
It is displayed as an error between 1b. Further, this addition result is supplied as a voltage signal to the recording device 9, so that it is recorded in a graph form on a recording paper running at a predetermined speed together with the output signals of the detectors 6a and 6b. In this case, the graph recording the addition results supplied from the calculation display device 8 represents the gap between the guide rails 1a and 1b, that is, the installation accuracy of the guide rails 1a and 1b. Automatic recording of installation accuracy will be possible.

[Problem that the invention attempts to solve]

The conventional elevator guide rail installation accuracy measuring device is configured as described above, so if there is a displacement of the guide rail, the car frame will also change depending on the displacement of the guide rail because the guide shoe is in sliding contact with the guide rail. It will be displaced. As a result, the detector attached to the car frame is also displaced by the displacement of the car frame, and the measured value includes an error corresponding to the displacement of the car frame. If the opposing left and right guide rails are displaced in the same way as in the case described above, this error will appear as a slight installation error or no error.
As a result, even if the guide rail is displaced to an extent that requires repair, there is a problem in that it is impossible to find the location.

This idea was made to solve the above problems, and even if the car frame to which the detector is attached is displaced due to the influence of the guide rail that has installation errors, it will not be affected by the displacement. To provide an elevator guide rail installation accuracy measuring device capable of accurately measuring the installation accuracy of a guide rail without causing problems.

[Means for solving problems]

The elevator guide rail installation accuracy measuring device according to this invention uses a rail accuracy detector attached to the car frame to detect the displacement of the guide rail, and measures the output of the rail accuracy detector while the car is running. The elevator guide rail installation accuracy measuring device to be recorded is equipped with a car displacement distance detector that detects the displacement distance of the car frame by detecting the position of a reference line attached to the car frame and provided in the hoistway. , the output signal of the rail accuracy detector is corrected using the output signal of the car displacement distance detector output from the car displacement distance detector.

[Effect]

The elevator guide rail installation accuracy measurement device of this invention detects the displacement distance of the car by detecting a reference line provided in the hoistway using a car displacement distance detector attached to the car frame. This car displacement distance signal is used to correct the output signal of the rail accuracy detector that is attached to the car frame and detects the displacement of the guide rail. However, even if the installation error is measured accurately, it will always be possible to measure the installation error accurately.

[Example of idea]

An embodiment of this invention will be described below with reference to the drawings. In Fig. 1, 1a and 1b are guide rails for measuring installation accuracy, 2 is the main rope of the elevator, 3 is a car frame that is suspended from the main rope 2 and goes up and down, and 4 is assembled inside the car frame 3. The cages 5a to 5d are guide shoes attached to the car frame 3, and guide rails 1a, 1b.
It is designed to come in sliding contact with the 10a and 10b are displacement detectors as rail accuracy detectors for detecting the displacement dimensions of the guide rails 1a and 1b, and 11 is a reference line hanging from the top of the hoistway, and a piano wire or the like is used. . A car displacement distance detector 12 detects the displacement distance of the car by detecting the position of the reference line 11. In other words, while the reference line 11 is always stationary, the car displacement distance detector 12 moves with the displacement of the car frame 3. Therefore, the output signal of the car displacement distance detector 12 is determined by the displacement of the car frame 3. It will show the distance.
13 is a mounting device for fixing the displacement detector 10a and the car displacement distance detector 12 to the car frame 3; 14 is a mounting device for mounting the displacement detector 10b at a predetermined position on the car frame 3 facing the guide rail 1b; 15
is the guide rail 1a, by inputting and adding the output signals of the displacement detectors 10a, 10b.
A computing device 16 is, for example, a pen-shaped oscilloscope, etc., for calculating the installation error between 1b and correcting the calculated installation error using the car displacement signal output from the car displacement distance detector 12. This recording device records each guide rail by recording graphs corresponding to the corrected levels of various signals outputted from the arithmetic device 15 on a strip-shaped recording paper discharged at a constant speed. The installation error curve between guide rails 1a and 1b and the installation error curve between guide rails 1a and 1b are output.

Figure 2 shows the guide rail 1a and displacement detector 10a.
FIG. 1 is a cross-sectional view showing the mounting relationship between It is designed to be output from the displacement detector 10a. Although not shown, the displacement detector 10b is also attached in the same relationship as the displacement detector 10a.

Figure 3 shows the reference line 11 and the car displacement distance detector 12.
12A is a sectional view showing the attachment relationship of 12A,
12B is a light projecting section and a detecting section of the car displacement distance detector 12. Reference numerals 17a and 17b are bolts for fixing the mounting device 13 to the car frame 3. When fixing the mounting device 13, the reference line 11 is positioned approximately at the center of the detection range of the detection section 12B. position. The car displacement distance detector 12 detects when the reference line 11 is relatively displaced in the direction of arrow B in the figure in response to the displacement of the car frame 3.
The output voltage decreases in proportion to the displacement distance,
It is fixed to the car frame 3 by a mounting device 13 so that it is resistant to displacement in the opposite direction.

Figure 4 is a wiring diagram between each device, 18, 19
is a variable resistor for zero adjustment provided in the arithmetic unit 15, and the variable resistor 18 is a variable resistor provided in the displacement detector 10a.
The initial value for the output of the car displacement distance detector 12 is adjusted to zero, and the variable resistor 18 is set to the displacement detector 10b.
is used to adjust the initial value for the output of to zero.

FIG. 5 shows a circuit diagram of the arithmetic unit 15, and 20 to
22 is an operational amplifier, 23-36 are resistors, and the operational amplifier 20 and the resistors 23-27 constitute a generally known inverting adder circuit. This inverting adder circuit adds the output voltage Va of the displacement detector 10a, the output voltage Vc of the car displacement distance detector 12, and the DC power supply divided voltage _V0a of the zero adjustment variable resistor 18, The result is V ₁ = −(Va + V _c +
V _0a ) is output as the output voltage V ₁ . Also,
The operational amplifier 21 and the resistors 28 to 32 constitute a well-known addition/subtraction circuit, and this addition/subtraction circuit
By calculating V _b , V _c , and V _0b , V ₂ =−(Vb
−Vc−V _0a ) is sent _out . Furthermore,
The operational amplifier circuit 22 and the resistors 33 to 36 constitute a generally well-known inverting adder circuit, and this inverting adder circuit receives the output voltages V ₁ , V ₂ of the inverting adder circuit.
By adding , the added output V ₃ is supplied to the recording device 16 as a measured value of the guide rail spacing. Note that +12 _V indicates the + side bus of the DC power supply, and -12 _V indicates the - side bus of the DC power supply.

The operation of the guide rail installation accuracy measuring device having the above configuration will be explained below. First, the car frame 3 is raised and lowered by a well-known car operating device to a position that corresponds to the lowest landing floor of the car room 4. At this time, when the guide rails 1a, 1b are fixed in the normal state, the output voltages v ₁ ,
It is difficult to attach the car frame ₃ to the car frame 3 so that the outputs of the car displacement distance detector 12 and the car displacement distance detector 12 are exactly zero. For this purpose, the zero adjustment variable resistor 18 of the arithmetic unit 15 is adjusted to adjust the output voltage V ₁ output from the adder circuit to zero V. Furthermore, the zero adjustment variable resistor 19 is adjusted to adjust the output voltage V ₂ output from the addition/subtraction circuit to zero V. By doing this, the displacement detectors 10a, 10b
Further, fine adjustment of the mounting position of the car displacement distance detector 12 is not necessary. That is, by this zero adjustment, the output voltage V ₃ corresponding to the interval accuracy of the guide rails 1a, 1b and the displacement detector 10a, which detects the displacement of the guide rails 1a, 1b,
Installation position of 10b and guide rails 1a, 1b
Moreover, the initial value of the car displacement distance detector 12 can be set to zero V without having to accurately adjust the relationship between the car displacement distance detector 12 and the reference line 11 to a predetermined position.

Next, when the initial setting process is completed in this way, the car frame 3 is raised at a low speed by the car operating device after the recording device 16 is set to an operating state. Then, since the guide shoes 5a to 5d fixed to the car frame 3 are in sliding contact with the guide rails 1a and 1b, the car frame 3 is attached to the guide rail 1.
It will move guided by a and 1b. Therefore, the displacement of the guide rails 1a, 1b is based on the reference line 1.
This will appear as a displacement of the car frame 3 from 1. And these displacement detectors 10a, 10b
The output signal of the car displacement distance detector 12 is supplied to the arithmetic unit 1, whereby the car frame 3
Correction processing is performed for detection errors caused by the displacement of the guide rail in accordance with the guide rail. That is, the output signals of the displacement detectors 10a and 10b are corrected by the output signal of the car displacement distance detector 12, and then supplied to the recording device 16 and recorded in a graph. Furthermore, the installation error signal between the guide rails 1a and 1b obtained by adding the correction output signals of the displacement detectors 10a and 10b is also recorded by the recording device 16.
and recorded in a graph. Therefore, the installation accuracy curve of each guide rail and the installation accuracy curve of the rail spacing based on the reference line 11 are drawn on the recording paper in the recording device 16.

In the above embodiment, a pen-shaped oscilloscope was used as the recording device, but this could be replaced with a data logger and the displacement detector 10
The output signals Va, Vb, and Vc of the car displacement distance detector 12 and the car displacement distance detector 12 are recorded together with the initial values before the car runs, and calculated using the arithmetic function of a built-in or external microcomputer. It is also possible to perform corrections associated with displacements and calculate various types of installation accuracy and display them on an attached display device. In this case, the recording device will substitute for the arithmetic device.

In addition, in the above embodiment, a case was explained in which a piano wire was used as a reference line, but a car displacement distance detector is a car displacement distance detector that uses a laser beam as a reference line and detects the car displacement distance by receiving this laser beam. A similar effect can be obtained by using it as

In addition, if you replace the displacement detector with a rail accuracy detector such as a magnetic displacement sensor that detects the degree of twist in the rail, you can not only measure the error in the installation interval of the guide rails mentioned above, but also measure the installation accuracy of another item. It becomes possible.

[Effect of idea]

As described above, according to this invention, the displacement distance of the car is detected by detecting the reference line provided in the hoistway using the car displacement distance detector attached to the car frame. The displacement distance signal is used to correct the output signal of the rail accuracy detector that is attached to the car frame and detects the displacement of the guide rail, so even if the car frame is displaced while being guided by the guide rail, This has the effect of always being able to accurately measure installation errors. Furthermore, if you record the change distance of the car frame due to the guide rail,
It also has the effect of making it possible to investigate the correlation between the cause of vibration and guide rail installation errors by comparing with car vibration during high-speed running.

[Brief explanation of the drawing]

FIG. 1 is a side view of an elevator guide rail installation accuracy measuring device according to an embodiment of the present invention;
The figure is a cross-sectional view along the line shown in Figure 1 showing the relationship between the guide rail and the displacement detector, Figure 3 is a cross-sectional view showing the relationship between the reference line and the car displacement distance detector, and Figure 4 is a cross-sectional view showing the relationship between each device. FIG. 5 is a circuit diagram of the arithmetic unit, and FIG. 6 is a side view showing a conventional elevator guide rail installation accuracy measuring device. 10a and 10b are displacement detectors (rail accuracy detectors), 11 is a reference line, 12 is a car displacement distance detector,
15 is a calculation device, and 16 is a recording device. In addition, in the figure,
The same reference numerals indicate the same or equivalent parts.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A rail accuracy detector that is attached to the car side facing the guide rail of an elevator to detect the displacement of the guide rail, and a rail accuracy detector that is attached to the car frame and provided in the hoistway. A car displacement distance detector detects the displacement distance of the car frame by detecting the position of the reference line that is located on the car frame, and the output signal of the rail accuracy detector and the output signal of the car displacement distance detector are input, The present invention is equipped with a calculation device that performs correction processing of the rail accuracy detection signal using the displacement distance detection signal and also performs calculations for determining various installation accuracy, and a recording device that records various signals output from the calculation device. Features: Elevator guide rail installation accuracy measuring device. (2) The reference line is constructed by a laser beam,
The elevator guide rail installation accuracy measuring device according to claim 1, wherein the car displacement distance detector is constituted by a detector that detects the center position by receiving the laser beam. . (3) The first claim for utility model registration is characterized in that the recording device is constituted by a data logger.
Equipment for measuring the installation accuracy of elevator guide rails as described in .