JP2614666B2 - Elevator load test method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an elevator load test method, and more particularly to an elevator load test method for judging whether or not the weight of a counterweight is appropriate.

[Prior Art] One of the load test methods of an elevator is a load test for determining whether a counterweight suspended in a hoistway with a balance between a car and a car is an appropriate weight. The method is specified in JIS4302A. In this load test, the load of the car was reduced to 0%, 25%, 50%, 75%, 100%
% And 110%, the car is run in each case, and the current / voltage of the motor of the hoist is measured at a position where the car passes the counterweight, that is, at a position where the car passes through the middle floor. Then, based on the measured value, it is determined whether or not the weight of the counterweight is appropriate.

The elevator operation control panel is provided with a car position indicator on the front side, and the back side is a mounting surface, on which signal is sent between the cable that supplies power to the motor of the hoist and the equipment in the hoistway. Is connected to a control cable that sends and receives

Therefore, conventionally, when performing the load test, a clamp-type ammeter and a voltmeter are attached to a cable connected to a mounting surface on the back surface of the operation control panel, and measurement is performed. The inspector confirmed that the car had reached the middle floor with the car position indicator on the front of the operation control panel, and immediately went around to the back of the operation control panel to read the current and voltage for measurement.

[Problems to be Solved by the Invention] In a load test of this type of elevator, a clamp-type ammeter is used, so the back side of the operation control panel to which the cable for supplying power to the motor of the hoist is connected. Then, an ammeter will be attached. For this reason, there is a time lag between the time when the inspector confirms the middle floor position of the car on the car position indicator on the front side of the operation control panel and the time when the current value and the voltage value are read to the back side and is read. Accuracy load test is not possible,
Performing a high-precision load test requires two inspectors.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned current state of an elevator load test, and an object of the present invention is to provide an elevator load test method capable of easily performing a high-precision load test with a single inspector. Is to provide.

Means for Solving the Problems In order to achieve the above object, the present invention provides a control cable for transmitting and receiving signals to and from equipment in a hoistway, on the same mounting surface of an operation control panel, A cable for supplying electric power to the motor is connected, the hoist is controlled by the operation control panel, and the car and the counterweight run in the hoistway in opposite directions to each other, and a plurality of floors are commissioned. For a given elevator, a predetermined weight is set on the car, and the car is run and the voltage / current of the motor is measured at a position passing the counterweight to determine whether the weight of the counterweight is appropriate. In the load test method for an elevator, a detector for detecting a car position is interposed and connected to a connection portion of the control cable with the operation control panel, and a power supply of a clamp-type ammeter is connected to the cable. The pole is clamped, the current is measured by the clamp ammeter while checking the position where the car passes the counterweight with the detector, and the appropriateness of the weight of the counterweight is determined based on the measured value. ing.

[Operation] According to the present invention, a detector is interposed and connected to a connection portion of a control cable on a mounting surface of an operation control panel, and a clamp-type current is supplied to a cable for supplying power to a motor of a hoist connected to the mounting surface. Perform the load test by clamping the meter. For this reason, on the back side of the operation control panel, it is confirmed by a detector that the car has passed through the middle floor, and at the same time, the current supplied to the motor of the hoist,
The voltage can be read, and a single inspector performs a high-precision load test.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is an explanatory diagram showing the configuration of an elevator to be used in the embodiment, FIG. 2 is a perspective view of the operation control panel of FIG. 1, and FIG. 3 is an explanatory diagram of a load test method according to the embodiment.

As shown in FIG. 1, the elevator on which the load test is performed is provided with a machine room 15 above the hoistway 1, in which the operation control panel 6, the hoisting machine 5, and the operation control panel 6 And a motor 5a for controlling the rotation of the motor 5 to operate the hoisting machine 5 is provided. A main rope 4 is wound around a pulley of the hoisting machine 5, and a car 2 and a counterweight 3 are fixed to both ends of the main rope 4, respectively. An indicator light 7 for indicating the position of the car 2 is provided at the landing on each floor, and the indicator light 7 and the operation control panel 6 are connected by a control cable 8.

As shown in FIG. 2, the mounting surface 6a on the back of the operation control panel 6
Is connected to a cable 9 for supplying power to the motor 5a, and a car position display control signal terminal plate 8a is mounted on the mounting surface 6a.
Is provided. In this car position display control signal terminal plate 8a,
A terminal plate 8b is fitted and connected, and a control cable 8 is connected to the terminal plate 8b.

An elevator load test method according to the embodiment will be described with reference to FIG.

(1) A detector 10 for detecting the position of a car is interposed and connected to a connection portion of the control cable 8 with the operation control panel 6. That is, the car position display control signal of the operation control panel 6 is changed from the terminal plate 8a to the terminal plate 8b.
Is removed, and one terminal plate 10b of the detector 10 is fitted and joined to the car position display control signal terminal plate 8a. Then, the other terminal plate 10b of the detector 10 is fitted and connected from the car position display control signal terminal plate 8a to the terminal plate 8b.

The detector 10 is provided with an indicator light 7 provided at each floor landing.
It has the same function as the above, and has a car position indicator light 10a, and is connected to the control cable 8 to display the car position on the car position indicator light 10a.

(2) One phase of the cable 9 for supplying power to the motor 5a of the hoisting machine 5 is clamped from the outside of the insulating coating by the clamp portion of the clamp ammeter 11, and the input terminals 12a and 12b of the voltmeter 12 remain. To two phases.

(3) The load state of the car is 0% (empty state), 25%, 5%
Set 0%, 75%, 100%, 110%, and perform ascending operation and descending operation under each load condition. When the car 2 passes through the intermediate floor in each of the load states of the ascending operation and the descending operation (the car in which the length of the main rope 4 is equal on the car 2 side and the counterweight 3 side when viewed from the hoisting machine 5). Position), the detector
The current value and the voltage value at that time are checked by the clamp type ammeter 11 and the voltmeter 12 by checking the car position indicator light 10a at 10.

Then, based on the read current value and voltage value and the load state and moving direction of the car at that time, the counter weight 3
It is determined whether or not the weight is appropriate.

As described above, according to the embodiment, on the back side of the operation control panel 6, the confirmation of the time when the car 2 has passed through the middle floor and the reading of the current value and the voltage value are performed at the same time. Accurate elevator load tests can be performed easily and quickly.

Note that, in the embodiment, the case where a detector that visually detects a car position by a car position indicator light is used as a detector has been described, but the present invention is not limited to the embodiment, and a car passing through an intermediate floor is used. A buzzer may be used to detect the car position aurally.

[Effects of the Invention] As described in detail above, according to the present invention, a detector for detecting the position of a car is interposed and connected to a connection portion of a mounting surface of an operation control panel with a control cable, and is connected to the mounting surface. A load test is performed by clamping a clamp-type ammeter to a cable that supplies power to the motor of the hoist. For this reason, on the mounting surface side of the operation control panel, one inspector simultaneously checks the passage of the car through the middle floor and reads the current value and voltage value of the motor of the hoisting machine at that time. An elevator load test can be easily performed.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing the configuration of an elevator to be subjected to an elevator load test of the present invention, FIG. 2 is a perspective view of an operation control panel of FIG. 1, and FIG. 3 is a load according to an embodiment of the present invention. It is explanatory drawing of a test method. 2 ... Cage, 3 ... Counter weight, 6 ... Operation control panel, 6a ... Mounting surface, 7 ... Indicator light, 8 ... Control cable, 8a ... Cage position display control signal terminal board, 8b ... Terminal board, 9 Cable, 10 Detector, 10a Car position indicator, 10b Terminal board, 11 Clamp ammeter, 12
……voltmeter.

Claims (1)

(57) [Claims] A control cable for transmitting and receiving signals to and from equipment in a hoistway and a cable for supplying power to a motor of a hoist are connected to the same mounting surface of the operation control panel. The hoist is controlled by a panel, and a predetermined weight is set on the car for an elevator in which a car and a counterweight run in opposite directions in the hoistway and are put into service on a plurality of floors. In the elevator load test method for determining whether the weight of the counterweight is appropriate by measuring the voltage and current of the motor at a position where the car runs and passing the counterweight, the operation of the control cable A detector for detecting the position of the car is interposed and connected to the connection part with the control panel, and the electrode of the clamp-type ammeter is clamped to the cable, and the car serves as the counterweight. While confirming the different positions in the detector, the measured current clamp type ammeter, the load test method of the elevator, characterized in that to determine the suitability of the weight of the counterweight, based on the measured value.