JP2001171936A - Braking torque adjusting device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an accurate and efficient gearless hoisting machine remotely controllable in consideration of the influence of different inertia for every unit, without using a braking torque adjusting weight. SOLUTION: Brake testing torque is computed from unbalanced torque and inertial torque, and a torque value applied to a hoisting motor is computed from the sum of them. An elevator cage is run at a low speed with the toque applied, and a braking operation is applied. The movement of the car is then measured, and braking torque is adjusted based on the result of the measurement.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake torque adjusting device for an elevator, and more particularly to an elevator using a gearless hoist without using a weight (weight for brake torque adjustment: hereinafter referred to as "weight"). The present invention relates to an elevator brake torque adjusting device for adjusting a brake torque.

[0002]

2. Description of the Related Art FIG.
FIG. 1 is a block diagram illustrating a configuration of a conventional elevator adjustment device disclosed in Japanese Patent Application Publication No. H10-115,004. In the figure, 121 is a brake torque adjustment mode setting means for setting a brake torque adjustment mode, 122 is a car position recognition means for recognizing the position of an elevator car, and 124 is a brake torque adjustment mode setting means 121 and a car position recognition means 122. ,
When it is confirmed that the elevator car has traveled and has reached a predetermined position on the hoistway, a brake operation command generating means 123 that outputs a brake operation command to the brake control circuit 115, 123 detects the speed of the elevator car. The car speed detecting means 125 is a brake torque calculating means 117 for calculating a brake torque based on signals from the car speed detecting means 123 and the brake operation command generating means 124.
Is a display for displaying the calculation result by the brake torque calculation means 125.

The operation will be described. When it is confirmed by the brake torque adjustment mode setting means 121 and the car position recognizing means 122 that the elevator car has traveled and has reached a predetermined position on the hoistway, the brake operation command generating means 124 outputs a brake operation command. . Next, the car speed detecting means 123 and the brake operation command generating means 12
4, the brake torque calculating means 125 calculates the brake torque at that time, and displays the calculation result on the display 117.

[0004] As a result, since the calculation result of the brake torque can be known through the display 117, a worker such as a maintenance person appropriately adjusts the brake torque so that the calculated value is obtained. Therefore, there is no need to mount a weight and adjust the brake torque, and all operations can be performed in the machine room.

[0005]

In the above-described conventional elevator adjusting apparatus, when the elevator car reaches a predetermined position while the elevator car is running, a brake operation command is generated and a brake operation command and a car speed are generated. The brake torque was calculated from the detection, but if the traveling loss of the hoistway is large, the time (speed) from the brake operation command to the stoppage is affected by the loss, and the accurate brake torque must be measured. There was a problem that can not be.

[0006] Also, when the car loading capacity and the car's own weight of a large elevator or the like using a gearless hoisting machine are large, the deceleration until the brake stops has a great effect. However, there is a problem that the above-described conventional elevator adjusting device cannot be applied since the above-mentioned conventional device cannot perform accurate measurement.

For these reasons, gearless hoists are currently actually loaded with weights to adjust the brake torque. At present, gearless hoists are generally equipped with a car. Since the capacity is large, loading the weight at the time of adjusting the brake torque is a difficult task, and there is a problem that a great amount of work time and labor are required.

Further, in general, in the case of a gearless hoist, since the inertia at each site differs greatly and the range of inertia is wide, an elevator using a gearless hoist takes into account the inertia. so,
The brake torque must be adjusted on a site-by-site basis, but the conventional elevator adjustment device described above has a problem in that accurate measurement cannot be performed because inertia is not taken into account.

The present invention has been made to solve such a problem. Even in a gearless hoist, adjustment of a brake torque and setting of a set value in consideration of inertia at each site without using a weight, without using a weight. Can be confirmed,
Remote operation is also possible, simplifying work,
It is another object of the present invention to provide an elevator brake torque adjusting device capable of efficiently adjusting the brake torque.

[0010]

The present invention provides a test start command output means for outputting a brake torque test start command,
Data storage means for storing unbalanced load data relating to unbalanced load when a brake torque adjusting weight is loaded and no load, elevator constant data unique to each elevator stand, and brake test load data; Receiving the brake torque test start command, reading the unbalanced load data from the data storage means,
An unbalance torque calculating means for calculating an unbalance torque corresponding to an unbalance load, and an inertia torque for reading the elevator constant data from the data storage means and calculating an inertia torque corresponding to a different inertia torque for each vehicle. Calculating means for reading the brake test load data from the data storage means and calculating a brake test torque corresponding to the brake test load; a brake test torque calculating means; an unbalance torque, an inertia torque, and a brake test torque. A torque sum calculating means for calculating a sum, an applied torque calculating means for calculating a value of an applied torque to be applied to the hoist motor at the time of a brake torque test, based on a value of the sum calculated by the torque sum calculating means; Calculated by means An elevator equipped with an applied torque, running the elevator car at a low speed and performing a brake operation, and a car movement amount measuring means for measuring a car movement amount of the elevator car at the time of the brake operation. It is a brake torque adjusting device.

Further, an adjustment necessity judging means for judging necessity of the adjustment of the brake torque based on the car movement amount measured by the car movement amount measuring means, and a brake based on the judgment result by the adjustment necessity judgment means. And a brake torque adjusting means for adjusting the torque.

In addition, the apparatus further comprises remote control means installed at a remote location with respect to the elevator to be adjusted, and a test start command output means outputs a brake torque test start command based on a command signal from the remote control means. Is output.

[0013] The present invention further comprises a reservation means for reserving a start time of the brake torque test and outputting a notification signal when the reserved start time comes, wherein the test start command output means comprises a command from the remote operation means. After receiving the signal, it waits for a notification signal from the reservation means and outputs a brake torque test start command.

[0014] Further, there is further provided a measurement result transmitting means for transmitting the car movement amount by the car movement amount measuring means to the remote control means.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a configuration diagram showing an entire system of an elevator brake torque adjusting device according to Embodiment 1 of the present invention. In the figure,
1 is a hoist motor for driving an elevator, 2
Is an elevator car, 3 is a car load detecting device mounted on the elevator car 2, 4 is a counterweight, 5 is an elevator control device for controlling the operation of the elevator, 6 is a brake torque test provided in the elevator control device 5. Device, 7 is a converter device, 8 is an inverter device,
9 is an external (remote) communication device provided in the elevator control device 5 for communicating with the outside, 10 is a remote communication base,
Reference numeral 11 denotes a brake test operating device that is provided on the site where the remote communication base 10 or the elevator is installed and performs an operation for a brake test by the brake torque test device 6, 12 is a car movement detecting device, and 13 is an electromagnetic brake. is there. FIG. 1 shows an example in which the present device is applied to an elevator using a gearless hoist. However, the present invention is not limited to this case, and the present device can be applied to other types of elevators.

FIG. 2 is a block diagram showing the internal configuration of the brake torque test device 6 provided in the elevator control device 5. In FIG. 2, reference numeral 6a denotes a CPU for controlling the inside of the brake torque test device 6, and 6b denotes a CPU 6a.
ROM that stores programs for the operation of the vehicle and individual data (car capacity, unbalance rate, lifting / lowering stroke, hoisting machine efficiency, etc.) for each elevator to be managed, 6
c is a RAM in which various processing data is written and read, 6d is a communication unit that performs communication with the remote communication base 10 via the external communication device 9, and 6e is detected by the car movement amount detection device 12. An I / O unit for inputting a car movement amount and inputting / outputting data to / from the brake test operation device 11, and a clock unit 6f having a timer function and managing time.

Next, the operation will be described. FIG. 3 is a flowchart showing a flow of a process of a brake torque test in a place where an elevator is installed in the brake torque adjusting device of the present embodiment.

First, an operator (not shown) operates the brake test operating device 11 installed at the site,
A brake torque test start command is output, and the car load is checked based on the output signal from the car load detection device 3, and the weight (ie, the brake torque adjustment weight) is determined.
Is switched to the "brake adjustment mode" for adjusting the brake torque (step S1). The brake torque test device 6 receives the change of the mode and starts the operation. Various modes such as a "brake adjustment mode" and a "normal mode" are prepared in advance in the brake test operation device 11, and if necessary,
It shall be switched appropriately. Also, when switching,
For example, if password input is a required condition, security can be ensured.

Next, the CP in the brake torque test device 6
Under the control of U6a, the unbalanced load data including the car capacity and the unbalance rate is read from the data stored in the ROM 6b, and the torque for the unbalanced load (hereinafter, referred to as unbalanced torque) is calculated ( Step S2). Here, the unbalance rate refers to the ratio of the load to the car capacity of 100%. For example, if the car capacity is 1000 kg and the weight (brake torque adjusting weight) is 1500 kg, the unbalance rate is 1500 kg / 1000 kg = It becomes 150%. Further, if the unbalanced state is 50% in the no-load state, 1000 kg × 0.5 = 500 kg, and 500 kg
It means that the weight is kg. Thus, for example,
Assuming that the weight is 150% of the car capacity and the no-load load is 50% of the car capacity, the unbalance torque for the unbalance load between when the weight is loaded and when the load is not loaded is calculated.

Next, similarly, under the control of the CPU 6a,
From the data stored in the ROM 6b, the elevator constants specific to each elevator such as a lift stroke, a car's own weight, a hoisting machine efficiency, a type of brake, a car / weight guide shoe, etc. are read, and a different inertia component for each car. (Hereinafter referred to as inertia torque) (step S3).

Next, similarly, under the control of the CPU 6a,
The brake test load is read from the data stored in the ROM 6b, and a torque (hereinafter, referred to as a brake test torque) for performing a brake test is calculated (step S4). Here, the brake test load is
This is a load for setting the brake torque, and 150% of the car capacity is generally used.

Next, under the control of the CPU 6a, the sum of the torques required for the brake torque test (that is, the unbalanced torque + the inertia torque + the brake test torque; The test torque is calculated (step S5). Here, this test torque corresponds to an actual torque value when a weight is loaded as a test load.

Next, under the control of the CPU 6a, a torque value to be applied to the hoist motor 1 by the inverter device 8 is calculated based on the test torque calculated in step S5 (step S6). Here, the brake torque test device 6
However, the brake test operating device 11 notifies the operator that the process for obtaining the torque value has been completed.

Next, the operator receives this notification,
The elevator car 2 is run in the above-mentioned "brake adjustment mode". That is, the elevator car 2 is run at a low speed with no car loaded, and in this state, the brake operation (sudden stop) by the electromagnetic brake 13 is performed (step S7). At this time, the torque value calculated in step S6 is applied to the hoist motor 1 by the inverter device 8 until the car stops.

The car movement amount (brake slip amount) at this time (step S7) is measured by the car movement amount detection device 12 (step S8).

Next, it is determined whether or not the car movement amount obtained in step S8 is within the reference value (step S9), and if it is within the reference value, the process is terminated (step S10). The set value of the torque is adjusted (step S11), and after the adjustment, the processing after step S7 is performed again to check and confirm the brake operation. The determination as to whether or not the value is within the reference value may be performed in the brake torque test device 6 or may be performed in the brake test operation device 11.

As described above, in this embodiment, the unbalance torque between the case where the weight is actually loaded and the case where no weight is loaded is obtained, and the unbalanced load is compensated and applied to the hoist motor 1. Since a torque value is obtained and applied to the hoist motor 1 to perform a brake torque test, the brake torque can be adjusted without using a weight even in a gearless hoisting machine. Time and labor can be significantly reduced.

Further, in the present embodiment, even when the car loading capacity or the car's own weight of a large elevator or the like using a gearless hoist is large, the influence of inertia different for each car is taken into account, so that accurate measurement is possible. Can be.

Further, since a test torque in consideration of the unbalance torque and the inertia torque is applied to the brake itself, even when the traveling loss on the hoistway is large, the influence is small, and an accurate brake torque can be measured.

In this embodiment, an example has been described in which the brake torque is adjusted on-site. However, the confirmation of the set value of the brake torque is performed by the brake test operation device 11 installed in the remote communication base 10. It is operable, and by performing the processing of the above-described steps S1 to S6 by remote operation, the time for the brake torque test can be reduced, and the work time on site can be minimized. It becomes possible.

Embodiment 2 In the present embodiment, an example will be described in which the same operation as the brake torque test operation described in the first embodiment is performed at a remote place, and a confirmation result of the set value is returned. 4 and 5
5 is a flowchart showing a flow of a brake torque test process by remote control. Note that the configuration of the device in this embodiment is the same as in FIGS.
Here, the description will be omitted, and those figures will be referred to.

The operation will be described. First, a brake torque test start command is output at a remote location by the brake test operating device 11 installed at the remote communication base (MIC) 10 (step T1).

If the command condition is set to "mode to be executed immediately after receiving command" and test start time, the clock section 6f built in the brake torque test device 6 will determine when the start time is reached. Since there is a “schedule mode” in which the test is performed, it is confirmed whether or not a test start time is set (step T2).

If it is determined in step T2 that the test start time has not been set, the brake torque test is started immediately (step T4). on the other hand,
If it is determined that the test start time has been set,
It is determined whether or not the start time has come from an output signal from the clock unit 6f (step T3), and when the start time has come, a brake torque test is started (step T4).

The brake torque test is the same as in the first embodiment. That is, the processes from step T4 to step T11 in FIGS. 4 and 5 are the same as those in step S1 to step S1 in FIG.
8, the description is omitted here.

Next, the measurement result (ie, step T1)
The car movement amount measured in step 1) is applied to the brake torque test device 6
Is stored in the RAM 6c (step T12), and in this embodiment, since it is a remote operation,
The measurement result is transmitted to the remote communication base 10 in order to determine whether or not the brake torque needs to be adjusted by an operator at a remote place (step T13).

As described above, in this embodiment, the same effects as those of the first embodiment can be obtained, and the brake torque test can be operated in a remote place. There is no need to go to the site, and the time required for the brake test can be further shortened, further improving convenience.

Further, after measuring the car movement amount, the measurement result is transmitted to the operator, and based on the result, the operator determines whether or not to adjust the brake torque, and then adjusts the brake torque. Therefore, safety and reliability can be ensured.

[0039]

The present invention provides a test start command output means for outputting a brake torque test start command, unbalanced load data relating to unbalanced load when a brake torque adjusting weight is loaded and no load, and an elevator base. The data storage means storing the unique elevator constant data and the brake test load data for each, receiving the brake torque test start command, reading the unbalanced load data from the data storage means, and reading the unbalanced load data. An unbalance torque calculating means for calculating an unbalance torque which is a minute torque; and an inertia torque calculating means for reading elevator constant data from the data storage means and calculating an inertia torque which is a torque for a different inertia for each vehicle. , Brake test load data from data storage means A brake test torque calculating means for reading and calculating a brake test torque corresponding to a brake test load; a torque sum calculating means for calculating a sum of unbalance torque, inertia torque, and brake test torque; and a torque sum calculation Means for calculating a value of applied torque to be applied to the hoist motor at the time of the brake torque test, based on the value of the sum calculated by the means, and applying the applied torque calculated by the applied torque calculating means to reduce the speed. Brake operating means for running an elevator car to perform a braking operation,
It is a brake torque adjustment device for an elevator equipped with a car movement amount measuring means for measuring the car movement amount of the elevator car at the time of braking operation, so that a brake torque test can be performed without using a weight, and The time can be significantly reduced, and the test torque is applied to the brake itself, so there is little effect even when the running loss of the hoistway is large. <Accurate brake torque can be measured. Even when the weight of the car or the weight of a car such as a large elevator using a large weight is large, the effect of the inertia is taken into account, so that there is an effect that accurate measurement can be performed.

Further, an adjustment necessity judging means for judging the necessity of the adjustment of the brake torque based on the car moving amount measured by the car moving amount measuring means, and a brake based on the judgment result by the adjustment necessity judging means. Since the brake torque adjusting means for adjusting the torque is further provided, the brake torque can be automatically adjusted, so that the labor and labor of the operator can be reduced and the work can be further simplified. Play.

In addition, the apparatus further comprises remote control means installed at a remote location with respect to the elevator to be adjusted, and a test start command output means outputs a brake torque test start command based on a command signal from the remote control means. Output, so that the brake torque test can be performed from a remote location, improving convenience and reducing the time required for the test because workers do not need to go to the site. This has the effect of minimizing on-site work time.

[0042] Further, a start time of the brake torque test is reserved, and a reservation means for outputting a notification signal when the reserved start time is reached is provided. After receiving the signal, it waits for the notification signal from the reservation means and outputs the brake torque test start command, so that the time to start the brake torque test can be reserved in advance,
This has an effect that a brake torque test can be reliably performed according to a schedule.

Further, since the apparatus further comprises a measurement result transmitting means for transmitting the car movement amount by the car movement amount measuring means to the remote operation means, it is possible to determine whether or not the brake adjustment is necessary. , The convenience is improved, and the brake torque test can be performed after obtaining the approval of the operator, so that there is an effect that the safety can be ensured.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an entire system of a gearless hoist brake torque adjusting device according to Embodiments 1 and 2 of the present invention.

FIG. 2 is a block diagram showing a configuration of a brake torque test device provided in the gearless hoisting machine brake torque adjusting device of the present invention.

FIG. 3 is a flowchart showing a flow of a process of a brake torque test on site according to the first embodiment.

FIG. 4 is a flowchart showing a flow (first half) of a process of a brake torque test by remote control in the second embodiment.

FIG. 5 is a flowchart showing a flow (second half) of a brake torque test process by remote control in the second embodiment, which is continued from FIG. 4;

FIG. 6 is a block diagram showing a configuration of a conventional elevator adjusting device.

[Explanation of symbols]

1 hoist motor, 2 elevator car, 3 car load detecting device, 4 counterweight, 5 elevator control device, 6 brake torque test device, 7 converter device, 8 inverter device, 9 external (remote) communication device,
10 telecommunications base, 11 brake test operating device, 1
2 Car travel detector, 13 Electromagnetic brake.

Claims (5)

[Claims] 1. A test start command output means for outputting a brake torque test start command, unbalanced load data relating to unbalanced load when a brake torque adjusting weight is loaded and no load, and a unique Data storage means for storing elevator constant data and brake test load data; receiving the brake torque test start command; reading out the unbalanced load data from the data storage means; An unbalance torque calculating means for calculating an unbalance torque which is a torque; and an inertia torque calculating means for reading the elevator constant data from the data storage means and calculating an inertia torque which is a torque corresponding to a different inertia for each vehicle. From the data storage means to the brake A brake test torque calculating means for reading a strike load data and calculating a brake test torque corresponding to a brake test load; and a torque sum calculating a sum of the unbalance torque, the inertia torque, and the brake test torque. Calculating means, an applied torque calculating means for calculating a value of an applied torque to be applied to the hoist motor at the time of a brake torque test, based on the total value calculated by the torque total calculating means, and an applied torque calculated by the applied torque calculating means. Brake operation means for applying the applied torque, running the elevator car at a low speed and performing a brake operation, and car movement amount measuring means for measuring the car movement amount of the elevator car during the brake operation. Elevator brake torque adjusting device 2. An adjustment necessity judging means for judging necessity of a brake torque adjustment based on the car moving amount measured by the car moving amount measuring means, The brake torque adjusting device for an elevator according to claim 1, further comprising: brake torque adjusting means for adjusting a brake torque based on the brake torque. 3. The remote control device according to claim 1, further comprising remote control means provided at a remote location with respect to the elevator to be adjusted, wherein the test start command output means controls the brake torque based on a command signal from the remote control means. The brake torque adjusting device for an elevator according to claim 1 or 2, wherein the device outputs a test start command. 4. A brake torque test start time is reserved, and further comprising a reservation means for outputting a notification signal when the reserved start time comes, wherein the test start command output means comprises the remote place operation means. 4. The brake torque adjusting device for an elevator according to claim 3, wherein after receiving the command signal from the controller, the controller outputs the brake torque test start command after waiting for a notification signal from the reservation unit. 5. The elevator according to claim 3, further comprising a measurement result transmitting means for transmitting the car movement amount by the car movement amount measuring means to the remote place operation means. Brake torque adjustment device.