JP2002081936A - Apparatus for measuring dimensions of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically, efficiently and accurately measure the size of an elevating passage. SOLUTION: A size measuring unit is disposed on a cage 2, the cage is moved to move the measuring unit to an optional height position, and a cage position detector 12 detects the position of the elevator cage. During rotating of a motor 14 a horizontal distance meter 11 measures the horizontal distance from the meter 11 to an object such as a wall surface, guide rail, etc., inside the elevating passage, and an arithmetic unit 13 controls the horizontal distance meter and arithmetically processes acquired data. In a place where the horizontal distance greatly varies, detailed measuring positions are set to measure in detail with narrowed rotary angle divisions of the motor 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator dimension measuring apparatus for automatically measuring the dimensions of each part in an elevator shaft.

[0002]

2. Description of the Related Art Conventionally, when performing elevator renewal or renovation work, at the stage of preparing drawings in the hoistway, the situation in the hoistway is accurately grasped, and various parts required for drawing in the hoistway are prepared. In order to obtain the dimensional value of, a person actually went to the site and measured the dimensions of each part in the hoistway.

[0003]

However, in such a conventional dimension measuring method, it is necessary for a person to enter an elevator machine room or a hoistway and actually measure the dimensions of each part using a tape measure or a straight measure. . This measurement operation must be performed mainly on a pit or a car in the hoistway in addition to the machine room, and the measuring operator must enter the hoistway.

[0004] However, in particular, in a measurement operation on a car, the longer the measurement distance is, the more it is necessary to lean out from the car to perform the measurement, so that it is difficult to work alone, and a plurality of personnel are required. Had become. In addition, since it is necessary for people to actually work on the car and work, it is necessary to receive prescribed education or work by highly qualified maintenance technicians who have prescribed qualifications. there were. In addition, since the measurement is basically performed by a person, there is a problem that an error easily occurs and the measurement value varies depending on the person who performs the measurement.

As a technique for solving this problem, the present applicant has proposed a technique in Japanese Patent Application No. 2000-038453 for automatically measuring the dimensions of each part in an elevator shaft.

The present invention relates to a further improvement of the invention of the prior application, and reduces the measuring time by measuring the horizontal distance to each part in the hoistway finely when the distance change is large and coarsely when the distance change is small. It is an object of the present invention to provide an elevator dimension measuring device capable of achieving the following.

[0007]

The elevator dimension measuring device according to the first aspect of the present invention is installed on an elevator car,
A horizontal distance meter that measures the horizontal distance from the own device to the object to be measured in the elevator hoistway, and a rotation mechanism for horizontally rotating the horizontal distance meter and scanning the surrounding parts at predetermined angle intervals, Performs control of the horizontal distance meter and the rotation mechanism and arithmetic processing of the acquired data, and compares a change amount of the distance data measured by the horizontal distance meter with a predetermined reference value. , A car position detecting device that detects a car position of the elevator in the hoistway, and a moving device that moves the own device in the vertical direction in the elevator hoistway. .

In the elevator dimension measuring device according to the first aspect of the present invention, the moving device moves up and down the elevator hoistway, and the car position detecting device detects the car position of the elevator in the hoistway. In addition, the horizontal distance meter measures the horizontal distance from the device itself to the object to be measured such as the wall surface in the hoistway, guide rails, etc., and the arithmetic and control unit controls the horizontal distance meter and the rotation mechanism and calculates the acquired data. Then, the change amount of the distance data measured by the horizontal distance meter is compared with a predetermined reference value, and the measurement angle interval of the horizontal distance meter is changed in accordance with the magnitude of the change. In this way, the distance between the walls at each vertical position in the hoistway of the elevator, the rail gauge dimensions, etc. are automatically measured, and the horizontal distance to each part in the hoistway is small. By measuring coarsely where the change is small, the measuring time is shortened as compared with the case where the whole is measured at fine angle increments, and necessary details are also accurately measured even when measuring at coarse rotation angle increments.

According to a second aspect of the present invention, in the elevator dimension measuring device according to the first aspect, the arithmetic and control unit is configured to control a change amount of a predetermined number of two or more distance data before and after the distance data measured by the horizontal distance meter. Is used to change the measurement angle interval of the horizontal distance meter in a wide or narrow manner, and accurately detect the shape of the hoistway by accurately detecting a location in the hoistway where the distance measurement data in the horizontal direction changes abruptly.

According to a third aspect of the present invention, in the elevator dimension measuring device according to the first or second aspect, the arithmetic and control unit comprises:
When the change amount of the distance data measured by the horizontal distance meter is larger than the reference value, the horizontal distance is measured at a predetermined angle interval after the rotation angle of the horizontal distance meter is returned by a predetermined angle, and the horizontal distance is measured. The part where the shape change in the direction is large is surely captured and measured finely.

According to a fourth aspect of the present invention, in the elevator dimension measuring apparatus according to any one of the first to third aspects, reference value input means for inputting the reference value is provided, and the arithmetic and control unit sets the reference value to the reference value. The value is input and stored by the value input means, and when starting the dimension measurement of the hoistway, a reference value can be set according to the scale of the hoistway. Dimensions can be measured widely regardless of the scale.

According to a fifth aspect of the present invention, in the elevator dimension measuring apparatus according to the third aspect, as the reference value input means, a radio signal or a wire signal indicating the reference value from the outside is received from the outside and transmitted to the arithmetic and control unit. A communication device for inputting is used, and by setting a reference value from the outside, it is possible to easily measure the dimensions of each part of the hoistway.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 1 and 2 show an embodiment of an elevator dimension measuring apparatus according to the present invention. A laser distance meter 11 for measuring a horizontal distance, a laser distance meter 12 for measuring a car position, and measurement data of these distance meters 11 and 12 are acquired and stored on a car 2 that moves up and down an elevator shaft 1. Further, a computer 13 for executing predetermined arithmetic processing and a receiving device 16 for receiving threshold (reference value) data from the outside by wireless or wired (wireless in the present embodiment) are provided. The laser distance meter 11 for measuring the horizontal distance is provided with a motor 14 for horizontally rotating the laser distance meter 11, and the computer 13 controls the rotation angle and detects the rotation angle.

The laser rangefinders 11 and 12 are of other types, such as those utilizing electromagnetic waves, infrared rays, and ultrasonic waves, as long as they measure the linear distance from their own device to the object to be measured in a non-contact manner. There may be.

The computer 13 normally performs the arithmetic control function of the present invention by incorporating a predetermined arithmetic control program into a portable personal computer that can be brought and installed on site, as shown in FIG. A storage unit 13E for storing data and programs, an operation unit 13D for executing predetermined operation processing, and a threshold data input unit 13C for inputting arbitrary threshold data by a technician are provided. Note that this computer 13
May be a dedicated one-chip microcomputer incorporated in a device case as a dimension measuring device.

The rotation speed and angle of the motor 14 are controlled by the computer 13, and its own rotation angle is input to the computer 13.

Next, the operation of the elevator dimension measuring apparatus having the above configuration will be described with reference to FIGS. First, the device is installed on the elevator car 2 as shown in FIG. Next, threshold data serving as a criterion for recognizing the detailed measurement position is input to the storage unit 13E of the computer 13. The threshold data is stored in the storage unit 13E in advance.
, Or stored by direct manual input from the threshold data input unit 13C, or the receiving device 1
6 may be any of those externally received and stored.

In this embodiment, the receiving device 16 is provided. However, this is not limited to the receiving device. If it is necessary to transmit a signal inside the device to the outside, a transmitting / receiving device may be employed. Good.

After these initial procedures, the computer 13
Based on this control program, the dimensions in the hoistway are automatically measured. This is based on the following procedure.

In FIG. 2, the vertical position of the car 2 is obtained as a distance from the range finder to the ceiling surface 20 of the hoistway by a laser range finder 12 for measuring the car position.
The measurement data is stored in the storage unit 13E of the computer 13. The control program is performed by the laser distance meter 11 for measuring the horizontal distance while the motor 14 is being rotated.
The surroundings are horizontally scanned, and the distance from the distance meter 11 to each part is obtained as measurement data in comparison with the rotation angle, and is stored in the storage unit 13E of the computer 13.

The calculation unit 13B of the computer 13 executes a calculation based on the data stored in the storage unit 13A, and measures the distance between the walls based on the measured data of the horizontal distance of each part in the hoistway 1 at each position of the elevator car 2. And rail gauge dimensions, and drawing data of the inner shape of the hoistway 1 are calculated.

When the measurement is performed by the above-described basic operation, the computer 13 always calculates the amount of change in the value before and after the measured data by the calculation unit 13D, and stores the calculated result in the calculation unit 13D and the storage unit 13E. A comparison with the stored threshold data is performed.

The computer 13 recognizes that a sudden change in the distance value has occurred when the result calculated by the calculation unit 13D exceeds the value of the threshold data stored in the storage unit 13E. This rapid change in the distance value can be expected to be caused by a large change in the shape of the measurement object.

Therefore, the computer 13 determines that further detailed measurement is necessary at the position based on the rapid change in the distance value, and stores the angle of the motor 14 at that time as a detailed measurement position in the storage unit 13E. Remember. At this time, the rotation scanning step angle of the motor 14 or the measurement angle interval of the laser distance meter 11 for horizontal distance measurement is switched to a fine rotation angle for detailed measurement.

The operation for automatically recognizing the detailed measurement position will be described in more detail with reference to FIG. As an example, a guide rail 21, a hoistway wall 22, and a beam 24 that require detailed measurement in the hoistway 1 will be described.

For example, a value (A) obtained by comparing the distance A from the laser distance meter 11 for measuring the horizontal distance to the hoistway wall 22 with the distance B from the laser distance meter 11 for measuring the horizontal distance to the tip of the guide rail 21. -B) is calculated, and when this value exceeds the threshold data Dth, it is determined that the guide rail 21 exists, and it is recognized that the position is the detailed measurement position. Similarly, for the beam 24 existing on the hoistway wall 22, the distance C from the horizontal distance measuring laser distance meter 11 to the hoistway wall 22 is also determined.
Is calculated by comparing the distance D from the laser range finder 11 to the beam 24, and is compared with the threshold data Dth.
Other objects in the hoistway 1 are determined in the same way,
Recognize the detailed measurement position.

The above operation is program-controlled by the computer 13. This operation will be described in more detail with reference to the flowchart shown in FIG. The motor 14 receives an origin return command from the computer 13. With this command, the motor 13 returns to the origin 1 and waits (step S1).

Next, the computer 13 acquires the rotation angle data of the motor 14 (step S2). At this time, the computer 13 recognizes that the origin return has been completed.

Next, a laser distance meter 1 for measuring the car position
2 receives the distance measurement start command from the computer 13 and measures the distance in the vertical direction. Thereby, the computer 13 acquires the vertical distance data, converts it into the car position data by the internal operation unit 13D, and stores it in the storage unit 13E (steps S3, S4).

Next, the motor 14 receives the rotation / stop command from the computer 13, rotates by the normal rotation increment angle set in advance in the control program, and stands by (step S5). Thereafter, the motor 14 receives the rotation angle data acquisition command from the computer 13 and transmits the rotation angle data to the computer 13 (Step S6).

Next, a laser distance meter 1 for measuring a horizontal distance.
1 receives a distance measurement start command from the computer 13,
Start distance measurement. Then, the computer 13 acquires horizontal distance measurement data at each rotation angle (Step S)
7, S8).

Next, a laser distance meter 11 for measuring a horizontal distance.
The computer 13 compares the amount of change in the measured data with the threshold data Dth, and if it is determined that the position is the detailed measurement position, the rotation is switched to a fine rotation angle for detailed measurement (steps S9 and S10). If not,
The normal rotation step angle is maintained (steps S9 and S1).
1).

It should be noted that these detailed measurement position data may have a certain range. For example, if the range is within ± 10 ° from the detailed measurement position, the motor 14 is reversed and returned by 10 °, and the measurement is restarted at a fine rotation angle. Further, when the angle falls out of this range, the angle is returned to the normal rotation step angle.

Thereafter, the processes of steps S5 to S10 or steps S5 to S9 and S11 are repeated until the motor 14 measures a predetermined measurement range, that is, a horizontal distance of 360 °.

When the horizontal dimension measurement is completed at the car position, the car 2 is moved to the next measuring height position, thereby moving the height of the elevator size measuring device in the vertical direction. Then, at a predetermined height position, the car position is measured and the horizontal distance of each part in the hoistway 1 is measured by the processing of steps S1 to S11 in the same manner as described above.

When the computer 13 completes the automatic measurement of the horizontal distance data at each height position in the hoistway 1,
The dimensions between the walls of the hoistway 1 and the dimensions of the rail gauges are calculated, and conversion processing into drawing data is also performed. The obtained drawing data is processed online by a computer 13 using a CAD program incorporated therein. The drawings can be automatically created and output, or they can be taken out of the computer 13 off-line and processed by another computer using the same CAD program as above to automatically create the drawings.

Thus, in the elevator dimension measuring apparatus of this embodiment, the apparatus is installed on the elevator car, and the car is moved to automatically measure the dimensions in the hoistway at each car position. This eliminates the need for multiple personnel to work on the car for dimensional measurement work, and reduces individual differences and errors as in the case of actual measurement by human systems. , Accurate dimension measurement is possible. Moreover, by measuring the horizontal distance to each part in the hoistway finely where the change in distance is large, and coarsely measuring the place where the change in distance is small, the measurement time is shortened compared to the case where the whole is measured at fine rotation angle increments,
Necessary details can be accurately measured even when measuring at coarse rotation angle increments.

[0038]

As described above, according to the first aspect of the present invention,
The distance between the walls at each vertical position in the elevator hoistway, rail gauge dimensions, etc. are automatically measured, and the horizontal distance to each part in the hoistway is small. By roughly measuring a small portion, the measurement time can be reduced as compared with the case where the whole is measured at fine rotation angle increments, and necessary details can be accurately measured even when measuring at a coarse rotation angle increment.

According to the second aspect of the present invention, in addition to the effect of the first aspect, the arithmetic and control unit can control the change amount of two or more predetermined numbers of distance data before and after the distance data measured by the horizontal distance meter. , The measurement angle interval of the horizontal distance meter is changed in a wide or narrow manner, so that a place where the distance measurement data in the horizontal direction in the hoistway changes abruptly can be reliably detected, and the shape of the hoistway can be accurately detected.

According to the invention of claim 3, according to claim 1 or 2,
In addition to the effects of the invention, when the change amount of the distance data measured by the horizontal distance meter is larger than the reference value, the arithmetic and control unit returns the rotation angle of the horizontal distance meter by a predetermined angle and then at a predetermined angle interval. Since the horizontal distance is measured, it is possible to reliably capture a portion where the shape change in the horizontal direction is large, and to perform a fine measurement.

According to the fourth aspect of the invention, in addition to the effects of the first to third aspects of the present invention, there is provided reference value input means for inputting a reference value, and the arithmetic and control unit inputs the reference value to the reference value. Since the data is input and stored by the means, when starting the dimension measurement of the hoistway, a reference value can be set according to the scale of the hoistway. Size can be measured widely.

According to the fifth aspect of the present invention, in addition to the effect of the third aspect of the invention, as the reference value input means, a radio signal or a wired signal indicating an external reference value is received and transmitted to the arithmetic and control unit. Since the receiving device is used, the dimension of each part of the hoistway can be easily measured by setting the reference value from the outside.

[Brief description of the drawings]

FIG. 1 is an exemplary perspective view showing a hardware configuration according to an embodiment of the present invention;

FIG. 2 is a block diagram showing a functional configuration of the embodiment.

FIG. 3 is an explanatory diagram showing a horizontal distance measuring operation by a laser distance meter for measuring a horizontal distance at a certain car position according to the embodiment.

FIG. 4 is a flowchart of a hoistway inner dimension measuring operation according to the embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 hoistway 2 car 11 laser rangefinder 12 laser rangefinder 13 computer 14 motor 16 receiver 21 guide rail 22 hoistway wall 24 beam

Continued on front page F term (reference) 2F065 AA04 AA06 AA52 BB05 DD00 DD03 FF11 MM07 MM08 PP22 TT02 UU01 3F305 BA01 DA15 DA18 DA23 5J084 AA04 AA05 AB17 AC01 DA07 EA04

Claims (5)

[Claims] 1. A horizontal distance meter which is installed on an elevator car and measures a horizontal distance from an own device to an object to be measured in an elevator shaft, and the horizontal distance meter is rotated horizontally to form a peripheral part. A rotation mechanism for scanning at predetermined angle intervals, control of the horizontal distance meter and the rotation mechanism, and arithmetic processing of the acquired data, and comparing a change amount of the distance data measured by the horizontal distance meter with a predetermined reference value. An arithmetic and control unit for changing the measurement angle interval of the horizontal distance meter according to the magnitude thereof, a car position detecting device for detecting a car position of an elevator in the hoistway, and a device in the vertical direction in the elevator hoistway. A dimension measuring device for an elevator, comprising a moving device for moving. 2. The method according to claim 1, wherein the arithmetic and control unit changes a measurement angle interval of the horizontal distance meter based on a change amount of two or more predetermined number of distance data before and after the distance data measured by the horizontal distance meter. The elevator dimension measuring device according to claim 1, wherein: 3. The arithmetic and control unit according to claim 1, wherein, when a change amount of the distance data measured by said horizontal distance meter is larger than said reference value, the rotation angle of said horizontal distance meter is returned by a predetermined angle and then a predetermined angle interval is returned. The elevator dimension measuring device according to claim 1 or 2, wherein the horizontal distance is measured by (1). 4. The apparatus according to claim 1, further comprising reference value input means for inputting said reference value, wherein said arithmetic and control unit inputs and stores said reference value by said reference value input means.
3. The elevator dimension measuring device according to any one of 3. 5. The apparatus according to claim 4, wherein the reference value input means is a communication device that receives a wireless signal or a wired signal indicating the reference value from outside and inputs the signal to the arithmetic and control unit. An elevator dimension measuring device as described in the above.