JPH1160104A - Plunger perpendicularity measuring device of hydraulic elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To safely measure the perpendicularity of a plunger by integrally fixing and attaching light receiving units for discriminating an irradiating part through which irradiating light is passes from a dark part to be blocked off by a linear body on the top of a plunger, recording a discriminating signal accompanying with the movement of the plunger, and dispensing with setting of a scaffold in a hoistway and stepping-on of a person on a rail bracket. SOLUTION: A linear body 42 is suspended from the upper part of a hoistway, projectors 34, 36 for irradiating the linear body 42 by parallel beams having the specified width and light receivers 35, 37 for discriminating an irradiating part through which irradiating light passes from a dark part to be blocked off by the linear body are integrally fixed and attached on the top of a plunger 14, and the discriminating signal is recorded with the movement of the plunger 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for measuring the verticality of a plunger in a hydraulic elevator.

[0002]

2. Description of the Related Art A plunger of a hydraulic elevator needs to be installed vertically so as not to leak oil from a sliding portion with a cylinder.
However, the verticality in the actually installed state varies depending on the amount of protrusion of the plunger. For this reason, the plunger is projected from the cylinder by a predetermined amount, and the verticality is measured each time.

FIG. 6 is a longitudinal sectional view showing a schematic configuration of a conventional indirect hydraulic elevator. In the figure, 1 is a hoistway, 2 is a hoistway wall, 3 is a pit, 4 is a landing on each floor,
Reference numeral 5 denotes a landing door on each floor, 11 denotes a cylinder erected in the pit 3 for injecting and discharging pressurized oil, 12 denotes a support for mounting the cylinder, and 13 denotes a fixing for fixing the cylinder 11 to the hoistway wall 2. A plunger 14 is inserted from the top of the cylinder 11 and rises and falls with the injection and discharge of pressure oil, 15 is a deflecting wheel mounted on the top of the plunger 14, and 16 is a plunger 14 at the top. A plunger rail for guiding, 17 is a rail bracket for supporting the plunger rail 16, and 18 is a main bracket that is attached to a rope cleat 18a having one end fixed to the hoistway 1 and is hung on a deflecting wheel 15 on the way to rise and hangs down. Rope,
Reference numeral 19 denotes a pair of columns standing upright on the top of the plunger 14, and reference numeral 20 denotes a plunger bracket which is provided on both sides of the deflector wheel 15 and spans between the plunger rails 16.

[0004] 21 is a car, 22 is a girder beam having one end attached to a lower frame (not shown) of the car 21 and the other end of the main rope 18 attached to the other end, and 23 is a car rail for guiding the car 21 , 24 are rail brackets for supporting the car rail 23, 25 are roller guides for rolling the side surfaces of the car rail 23, 26 are shock absorbers, and 27 is disposed along the running path of the car 21 in the hoistway 1. A perforated tape for detecting the traveling position of the car 21 is provided at the upper end of the car 21 and has a hole 27a uniformly formed. Is a pulse counter that counts.

In the above-mentioned hydraulic elevator, when pressure oil is injected into the cylinder 11, the plunger 14 rises by an amount corresponding to the amount of oil. Conversely, when the pressure oil is discharged from the cylinder 11, the discharged oil is discharged. The plunger 14 descends by an amount corresponding to the amount. On the other hand, since the main rope 18 is wound around the deflector wheel 15, the plunger 1
When 4 rises, the main rope 18 is tightened from the car 21 side with a cleat 18a.
It is carried over to the side. The car 21 rises with this carryover. Conversely, when the plunger 14 descends, the main rope 18 is carried over from the rope cleat 18a to the car 21 side. The car 21 descends with the carryover.

Here, as is clear from FIG. 6, the car 21 has an ascending and descending distance twice as long as the ascending and descending distance of the plunger 14. That is, the stroke of the plunger 14 is half of the vertical stroke of the car 21. Therefore, when the car 21 descends to the lowest floor, the deflecting car 15 is above the car 21, but when the car 21 rises to the top floor, the deflecting car 15 is located below the car 21. Become.

[0007]

Incidentally, both the cylinder 11 and the plunger 14 need to be installed vertically. If any of them is not vertical, an oil seal (not shown) provided at the sliding portion between the cylinder 11 and the plunger 14 is abnormally worn, and the oil leakage becomes remarkable. Therefore, if an oil leak occurs, the plunger 14
Of the plunger rail 16
Installation must be readjusted.

[0008] The plunger 1 falls over the plunger 14
The same applies to the so-called direct-connection type hydraulic elevator in which the elevator 4 is directly connected to and below the car 21, but particularly in the indirect-type hydraulic elevator, the car 21 moves twice with respect to the plunger 14. Then plunger 1
4 cannot measure the verticality over the entire stroke. Therefore, conventionally, a vertical platform of the plunger 14 has been measured by assembling a scaffold in the hoistway 1 or a person riding on the rail bracket 17. Such a measuring method is dangerous, and at the same time, there is a limit in grasping the actual situation due to the limited number of measuring points, and there has been a problem that sufficient measures cannot be taken.

The present invention has been made in order to solve such problems, and it is not necessary to form a scaffold in a hoistway or to put a person on a rail bracket. It is another object of the present invention to provide a hydraulic elevator plunger verticality measuring device capable of measuring the verticality at each position of the plunger and simultaneously measuring the verticality in two directions.

[0010]

SUMMARY OF THE INVENTION According to the present invention, there is provided a projector which hangs a linear body from an upper part of a hoistway and irradiates the linear body with a parallel beam having a predetermined width, and an illuminator through which the illuminating light is transmitted. A part and a light receiver for identifying a dark part blocked by the linear body are integrally fixed and attached to the top of the plunger, and the identification signal is recorded with the movement of the plunger. is there.

Further, the present invention is such that the up-and-down distance of the plunger and the identification signal of the photoelectric device are simultaneously recorded.

Further, according to the present invention, a linear body is irradiated with parallel rays of a predetermined width from two directions orthogonal to each other, and a dark portion blocked by the linear body is identified in the two directions. .

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a top portion of a plunger in this embodiment, FIG. 2 is a plan view showing an optoelectronic device of this embodiment, FIG. 3 is an explanatory view showing a method of attaching a measuring instrument in this embodiment. 4 is a system configuration diagram of this embodiment, and FIG. 5 is a flowchart showing a processing procedure of this embodiment.

In FIG. 1, 2 is a hoistway wall, 14 is a plunger, 15 is a deflecting car, 16 is a plunger rail, 17 is a rail bracket, 18 is a main rope, 18a cleat, 19 is a column, and 20 is a plan. Jar bracket, 21
The basket is the same as that shown in FIG.
A guide shoe 20a is attached to the end of the plunger bracket 20, has a U-shaped cross section, and slides with the head of the plunger rail 16 inserted into the recess.
Reference numeral 3 denotes parallel light beams each having a predetermined width.
Light projectors 34 and 36 for irradiating the light from
The light receivers 35 and 37 having light receiving elements arranged in the predetermined width direction opposite to the light receiving elements 4 and 36 are integrally fixed by separating columns 38, 39 and 40, and the plunger bracket 2 is fixed.
0 is a sensor which is a photoelectric device attached to the side surface.

That is, the floodlight 34 projects vertically from the side surface of the plunger bracket 20 and directs a parallel light beam having a predetermined width expanded in the projecting direction in a direction parallel to the side surface of the plunger bracket 20. The light is irradiated horizontally, and the light receiver 35 is vertically protruded from the side surface of the plunger bracket 20 so as to face a position separated from the light projector 34 by a predetermined distance by the separation column 38, and the parallel light from the light projector 34 is predetermined. , The light projector 36 has one end attached to a distal end of a partition 39 that is vertically protruded from the side surface of the plunger bracket 20, and extends in a direction parallel to the side surface of the plunger bracket 20. The widened parallel light beam having a predetermined width is irradiated toward the side surface of the plunger bracket 20, and the light receiver 37 is opposed to the light emitter 36, and the back surface is a plunger bracket. Is affixed disposed on the side surface of the bets 20 are each configured to receive over the parallel rays from said light projector 34 at a predetermined width. The separating column 40 is provided for separating one photoelectric device including the light emitting device 34 and the light receiving device 35 from the other photoelectric device including the light emitting device 36 and the light receiving device 37.

Reference numeral 41 denotes a reel attached to the top of the plunger rail 16, and reference numeral 42 denotes a linear member fed from the reel 41, which passes between the light emitter 34 and the light receiver 35 and between the light emitter 36 and the light receiver 37. To be drooped.
Reference numeral 43 denotes a weight attached to the lower end of the linear body 42.

In FIG. 2, RS is a laser light emitting element of the light projectors 34 and 36, LNS is a lens for condensing the emitted light from the laser light emitting element RS into a parallel light beam LGH, and Y0 to Yn are housed in the light receiver 35 and accommodated in the Y axis. The CCD image sensor, which is a one-dimensional light receiving element arranged in the direction, is scanned at a predetermined cycle, and the linear body 42 intercepts the parallel light beam LGH radiated in the X-axis direction. The position of the linear body 42 in the Y-axis direction is detected. X0-X
n is a CCD image sensor, which is a one-dimensional light receiving element housed in a light receiver 37 and arranged in the X-axis direction, and is scanned at a predetermined cycle to emit a parallel light beam LGH that the linear body 42 irradiates in the Y-axis direction. The position of the linear body 42 in the X-axis direction is detected from the sensor Xb which becomes a dark part by blocking.

Next, a method of attaching the linear member 42 and the sensor 33 will be described with reference to FIG. In FIG. 3, 1
Is a hoistway, 2 is a hoistway wall, 11 is a cylinder, 12 is a support, 14 is a plunger, 15 is a deflecting car, 16 is a plunger rail, 17 is a rail bracket, and 21 is a car. It is similar to the one. Reference numeral 33 denotes a sensor, 41 denotes a reel attached to the top of the plunger rail 16, and 42 denotes a linear member fed from the reel 41, which is the same as that shown in FIG.

First, as shown in FIG.
The worker M climbs up to the top floor with the reel 41 attached to the side of the upper end of the plunger rail 16 shown in FIG. Next, as shown in FIG. 3B, the car 21 is lowered, and when the deflector wheel 15 has just come to the front of the worker M, the car 21 is stopped, and the sensor 33 is moved to the side of the plunger bracket 20. Attach to At this time, as shown in FIG. 1, the mounting position of the photoelectric device is set so that the linear body 42 is illuminated by the light projectors 34 and 36. When the attachment of the linear member 42 and the sensor 33 is completed, the car 21 is lowered to the lowest floor as shown in FIG. Initially set to "0".

In FIG. 4, reference numeral 27 denotes a car 2 in the hoistway 1.
6 is a perforated tape for detecting the traveling position of the car 21 disposed along the traveling path 1; 27a is a hole of the perforated tape; 28 is a pulse counter provided at the upper end of the car 21; It is the same as the one shown, and has the function of a range finder for measuring the vertical distance of the plunger 14 from the traveling distance of the car 21. 51 is a CPU, 52 is FIG.
R in which the program shown in the flowchart of FIG.
OM, 53 is a RAM for temporarily storing data and calculation results, 54 is an interface for connection to external equipment, and 55 is a data memory for storing measurement results.

Next, a method of measuring the verticality of the plunger 14 will be described with reference to the flowchart of FIG. First, an initial value is set in step S1. That is, car 2
The count value PC of the pulse counter 28 when 1 is at the lowest floor is read via the interface 54 and set as an initial value N0, and the ascending and descending distance D calculated from the count value PC is calculated.
Is initialized to “0”, the detection signal reading cycle of the sensor 33 is initialized to “100” pulses, and the measurement position pulse number PN is initialized to “0”.

In step S2, the linear object 42 is projected light LGH.
Are read from the image sensors Xb and Yb, and the number of measurement position pulses PN, the distance D and the position signals Xb and Yb of the linear body 42 are stored in the data memory 5 in step S3.
5, the number PN of measurement position pulses for writing the measurement data to the data memory 55 is set in step S4. That is, “1” is added to the current measurement position pulse number PN.
00 ”. In step S5, it is checked whether or not a signal of "end of measurement" has been input. If it is not the end of the measurement, it is determined to be “N” and the process proceeds to step S6.
In step S6, a value PC obtained by counting the pulses generated by the raising and lowering of the car 21 by the pulse counter 28 is read. In step S7, the value obtained by subtracting the initial value N0 from the count value PC, that is, the value obtained by actually moving the car 21 up and down is compared with the measured position pulse number PN. If the car 21 has not yet reached the measurement position, it is determined to be “N”, and the process proceeds to step S5. Thereafter, the car position measurement in steps S5 to S7 is repeated.

When the car 21 reaches the measurement position, "Y" is determined in step S7, and the process proceeds to step 2, where the image sensors Xb and Yb of the position signal at which the linear body 42 at the new car position blocks the projection light LGH. Is read in step 2, the data is written in the data memory 55 in step 3, and the next measurement point is set in step S4.

Thereafter, the processing of steps S5, S6, and S7 is repeated until the next measurement position is reached. If a signal indicating the end of measurement is input during the repetition, "Y" is determined in step S5. Then, the process proceeds to step S8, and a position signal at which the linear body 42 blocks the projection light LGH is read from the image sensors Xb and Yb, and in step S9, the number of lifting pulses PN, the distance D, and the linear body 42 are read. Are written in the data memory 55. That is, the same processing as in step S3 is performed, and the processing ends. The contents of the data memory 55 are printed out separately.

According to the above measurement, the number PN of measurement position pulses
Can be measured at an arbitrary car position, that is, at a plunger position. Moreover, since the position signals of the image sensors Xb and Yb are read simultaneously with the distance D, the installation state of the plunger 14 becomes clear for each distance D. By re-adjusting the plunger rail 16 based on this measurement result, the plunger 14 can be raised and lowered vertically, and thus oil leakage is prevented.

Embodiment 2 FIG. In the first embodiment, the elevating distance D is calculated by counting the count value PC by the pulse counter 28.
, Only the signal values of the image sensors Xb and Yb may be measured, and the up / down distance D may be measured by the pulse counter 28 only when the measurement result is determined to be abnormal.

Embodiment 3 Alternatively, the sensor 33 may be rotatable, and may be rotated by 90 degrees after measuring the X direction, and then measuring the Y direction. This allows measurement with a single set of sensors.

Embodiment 4 Furthermore, in the first embodiment, the other end of the main rope is attached to the tie beam 22 of the car 21. However, the hydraulic elevator of the lift type, that is, the plunger 14 side A deflecting wheel (not shown) is provided on the side opposite to the plunger 14,
The main rope 18 lowered from the deflecting wheel 15 at the top of the plunger 14 is first wrapped around the deflecting wheel on the side of the plunger 14, passes under the car 21, and then wrapped around the deflecting wheel on the side opposite to the plunger 14. After starting up, the main rope 18
To the other fixed part of the hoistway 1
It can also be applied to hydraulic elevators that lift up.

Embodiment 5 Furthermore, in the first embodiment, the distance D is calculated from the count value PC of the pulse counter 28 on the car 21.
The distance D may be calculated by attaching an accelerometer to 4 and integrating the acceleration value.

Further, in the first embodiment, the light emitter and the light receiver are vertically protruded from the side surface of the plunger bracket 20, or are attached along the side surface. This is because the subsequent inclination direction of the plunger 14 is directly measured based on the measurement result, and the subsequent installation adjustment work based on the measurement result is facilitated. Therefore, this mounting method is not necessarily limited to the one shown in the first embodiment.

[0031]

As described above, according to the present invention, a linear body is hung down from the upper part of a hoistway, and this linear body is irradiated with parallel rays having a predetermined width, and the irradiated light is transmitted. Since the irradiation unit and the light receiving unit for identifying the dark part blocked by the linear body are integrally fixed and attached to the top of the plunger, and the identification signal is recorded with the movement of the plunger. Therefore, it is not necessary to form a scaffold in the hoistway, and it is not necessary for a person to get on the rail bracket, so that the verticality of the plunger can be measured safely.

Also, since the identification signal of the photoelectric device for identifying the linear body is recorded together with the elevation distance of the car or the plunger, the verticality at each part of the plunger stroke can be measured, and the subsequent installation adjustment Is easy to perform.

Further, the linear body is illuminated with parallel rays of a predetermined width from two directions orthogonal to each other, and a dark portion blocked by the linear body is identified in the two directions. This has the effect that the degrees can be measured simultaneously in two directions.

[Brief description of the drawings]

1 is this embodiment, FIG. 2 is this embodiment, FIG. 3 is this embodiment, FIG. 4 is this embodiment, and FIG. 5 is this embodiment.

FIG. 1 is a perspective view showing a plunger top according to the first embodiment.

FIG. 2 is a plan view showing the photoelectric device of Embodiment 1.

FIG. 3 is an explanatory diagram showing a method of attaching the measuring instrument according to the first embodiment.

FIG. 4 is a system configuration diagram according to the first embodiment;

FIG. 5 is a flowchart illustrating a processing procedure according to the first embodiment;

FIG. 6 is a longitudinal sectional view showing a schematic configuration of a conventional indirect hydraulic elevator.

[Explanation of symbols]

1 hoistway, 2 hoistway walls, 11 cylinders, 14
Plunger, 15 deflector car, 16 plunger rail, 21 cage, 27 Perforated tape (distance meter), 27a
Hole, 28 pulse counter (distance meter), 33 sensor (photoelectric device), 34, 36 floodlight, 35, 37
Receiver, 42 linear body, LGH irradiation light, X0, X
b, Xn, Y0, Yb, Yn Image sensor (light receiving element).

Claims (3)

[Claims] 1. A cylinder into which pressure oil is injected or discharged is erected in a hoistway, and a car is raised and lowered by a plunger which moves upward or downward from the top of the cylinder with the injection or discharge of the pressure oil. In a hydraulic elevator for measuring the verticality of the plunger, a linear body hung from the upper part of the hoistway, a floodlight for irradiating the linear body with a parallel light beam having a predetermined width, and a light emitter facing the floodlight. A light-receiving element is arranged in the predetermined width direction, and a light-receiving device for discriminating an irradiation part by the irradiation light and a dark part blocked by the linear body is integrally fixed and attached to the top of the plunger. A plunger verticality measuring device for a hydraulic elevator, comprising: a photoelectric device having the above configuration; and a recording medium for recording the identification signal of the photoelectric device. 2. A cylinder into which pressure oil is injected or discharged is erected in a hoistway, and a car is raised and lowered by a plunger which moves upward or downward from the top of the cylinder as the pressure oil is injected or discharged. In a hydraulic elevator for measuring the verticality of the plunger, a linear body hung from the upper part of the hoistway, a floodlight for irradiating the linear body with a parallel light beam having a predetermined width, and a light emitter facing the floodlight. A light-receiving element is arranged in the predetermined width direction, and a light-receiving device for discriminating an irradiation part by the irradiation light and a dark part blocked by the linear body is integrally fixed and attached to the top of the plunger. A photoelectric device, a distance meter for measuring the elevation distance of the plunger, and a recording medium for simultaneously recording the measurement value of the distance meter and the identification signal of the photoelectric device. Hydraulic elevator plunger verticality measuring device. 3. A photoelectric device comprising: a light projector for irradiating a linear object with parallel light beams having a predetermined width from two directions orthogonal to each other; and a light receiver for receiving irradiation light from each of the above directions. 3. The method according to claim 1, wherein
A plunger verticality measuring device for a hydraulic elevator as described in (1).