JP2001122536A - Control device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control device for an elevator improving the riding quality in starting the driving of the elevator and saving the labor in adjusting a load detecting means by automatically adjusting an output value of the load detecting means for detecting the load of an elevator car. SOLUTION: The elevator is provided with this control device 30 for the elevator, the load detecting means 31 for detecting the load inside the elevator car 4, and a torque generation means 32 generating a balance torque to a driving means 9 of the elevator car 4 based on the loading value by the load detecting means 31. The speed of the elevator car 4 is detected by a speed detecting means 34 and when the speed of the elevator car 4 is a rating speed, the generation torque of the driving means 9 is detected by a torque detecting means 35. A derivation part 37 derives the actual load of the inside of the elevator car 4 based on the generation torque detected by the torque detecting means 35 and a load correction means 38 corrects the output value of the load detecting means 31 based on the actual load.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load detecting means for detecting a load inside an elevator car, a torque generating means for generating a balancing torque to a driving means of the elevator car based on an output value of the load detecting means, More particularly, the present invention relates to an elevator control device capable of adjusting an output value of a load detection unit.

[0002]

2. Description of the Related Art In order to improve the riding comfort of an elevator, it is important to suppress vibration in the elevator car. In particular, it is known that the human body easily senses vibration at the start of elevator travel, and it is desired to suppress vibration at the start of elevator travel.

Here, an outline of a conventional elevator and its control device will be described with reference to FIG.

[0005] As shown in FIG. 15, an elevator car 84 is driven by a main rope 83 a hung on a hoist 81.
And a counterweight 85 are suspended. The lower sides of the elevator car 84 and the counterweight 85 are connected by a hanging rope (compensation rope) 83b hung on a hanging car (compensive) 82.

[0005] When the elevator car 84 is stopped, the control device 90 sets a state in which no torque is applied to the hoisting machine 81 and activates a brake on the hoisting machine 81.

When the elevator car 84 starts running,
The brake is released, but at the moment of this break release,
The hoisting machine 81 may rotate toward the heavier one of the elevator car 84 and the counterweight 85.
In this case, vibration occurs in the elevator car 84.

In order to prevent the occurrence of such vibration, a control device is provided to cancel the weight imbalance based on the weight of the elevator car 84 including the load in the elevator car 84 and the weight of the counterweight 85. Hoisting machine 1 from 90
In general, a balancing torque is generated.

The elevator car 84 usually has a double structure of a car frame and a car room 86, and an anti-vibration rubber 87 is interposed between the car frame and the car room 86. Accordingly, the weight of the elevator car 84 is detected by detecting the amount of deflection of the vibration-proof rubber 87 by the load detecting device 88 composed of a differential transformer or the like. It is known that the output of the load detecting device 88 (the output of the differential transformer) changes linearly with the load in the car (see FIG. 4).

However, the anti-vibration rubber 87 undergoes its own bending due to aging. Further, the elastic coefficient of the vibration-proof rubber 87 also changes due to aging. Even when comparing the state where there is no load in the elevator car 84 and the state where the rated load is loaded, the amount of deflection of the anti-vibration rubber 87 is only about several millimeters. When the amount or elastic modulus changes, the load detecting device 8
The output value by 8 will not be accurate.

When the load detecting device 88 cannot accurately detect the load, the balancing torque generated by the control device 90 does not correspond to the actual weight of the elevator car 84. Vibration may occur in the car 84.

In order to prevent such vibration from occurring, it is necessary to frequently adjust the load detecting device 8.

Conventionally, an adjuster manually creates a state in which there is no load in the elevator car 84 and a state in which a rated load is placed on the elevator car 84, and manually performs zero adjustment and gain adjustment of the load detecting device 88. It is done in. Such adjustment is performed at predetermined time intervals, but each time it is necessary to bring the rated load load into the elevator car 84, the adjustment work requires time and effort.

An elevator control device described in Japanese Patent Application Laid-Open No. Hei 10-81454 has been proposed to solve such a problem. This control device is also of a type having an in-car load detecting means for detecting the load in the elevator car, and performing control at the start of traveling based on the load value in the car detected by the in-car load detecting means. But,
A car stop detecting means for detecting that the elevator car is stopped in a state where no passenger is riding, and a car stop detecting means for detecting that the elevator car is stopped in a state where no passenger is riding. Correction means for correcting the value of the load detection device in the elevator car.

According to this control device, the value of the load detecting device is corrected by the correcting device, so that the adjustment of the in-car load detecting device is labor-saving, and the control at the start of running is appropriately performed. The starting ride is improved.

[0015]

However, in the elevator control apparatus described in Japanese Patent Application Laid-Open No. Hei 10-81454, the output of the load detector can be zero-adjusted, but the gain must be adjusted. Can not. Therefore, in order to perform gain adjustment, it is still necessary to bring the rated load into the elevator car. However, in some buildings, it is difficult to carry the rated load, and it takes time and effort to adjust the load.

The present invention has been made in view of the above points, and enables automatic adjustment of an output value of a load detecting means for detecting a load in an elevator car, so that the ride comfort at the start of elevator traveling is improved. It is an object of the present invention to provide an elevator control device which realizes improvement of the load control and labor saving of adjustment of the load detecting means.

[0017]

SUMMARY OF THE INVENTION According to the present invention, there is provided a load detecting means for detecting a load inside an elevator car, and a balancing torque is generated in a driving means of the elevator car based on a load value by the load detecting means. Torque generating means, speed detecting means for detecting the speed of the elevator car, and torque for detecting the generated torque of the driving means when the speed detecting means detects that the speed of the elevator car is a rated speed. Detecting means, a deriving unit for deriving an actual load inside the elevator car based on the generated torque detected by the torque detecting means, and the load based on the actual load derived by the deriving unit. An elevator control device comprising: a load correction unit that corrects a load value by a detection unit.

According to the present invention, the actual load is derived based on the generated torque when the speed of the elevator car is the rated speed, and the load correction means determines the load value by the load detection means based on the derived actual load. For the correction, the load value corrected by the load detecting means can be made to correspond to the actual load regardless of the secular change of the output characteristic of the load detecting means.

The present invention also provides load detecting means for detecting the load inside the elevator car, torque generating means for generating a balancing torque to the driving means of the elevator car based on the load value of the load detecting means, Speed detecting means for detecting the speed of the elevator car, a storage unit for storing a reference torque at the time of rated loading and running at the rated speed of the elevator car, and the speed of the elevator car is the rated speed by the speed detecting means. Is detected, the torque detecting means for detecting the generated torque of the driving means, and the elevator car is detected based on the reference torque stored in the storage unit and the generated torque detected by the torque detecting means. A deriving unit for deriving an actual load inside the vehicle, and the load based on the actual load derived by the deriving unit. A load correcting means for correcting the load value by the detection means is a control device for an elevator, characterized in that it comprises a.

According to the present invention, the actual load is derived based on the reference torque stored in the storage unit and the generated torque detected by the torque detecting means, and the load correcting means is provided based on the derived actual load. Since the load value by the detecting means is corrected, the load value corrected by the load detecting means can be made to correspond to the actual load regardless of the secular change of the output characteristic of the load detecting means.

The present invention also provides a load detecting means for detecting a load inside the elevator car, a torque generating means for generating a balancing torque to the driving means of the elevator car based on a load value by the load detecting means, Speed detecting means for detecting the speed of the elevator car, second torque generating means for generating zero control torque in the driving means so as to make the speed of the elevator car zero when the brake of the elevator car is released, and the torque The balancing torque generated by the generating means is compared with the zero control torque generated by the second torque generating means. If the two are different from each other, based on the zero control torque, A deriving unit for deriving the actual load of the vehicle, and detecting the load based on the actual load derived by the deriving unit. A load correcting means for correcting the load value by stages, a control device for an elevator, characterized in that it comprises a.

According to the present invention, the actual load is derived based on the zero control torque, and the load correction means corrects the output value of the load detection means based on the derived actual load. Regardless of the aging of the load, the load value corrected by the load detecting means can be made to correspond to the actual load.

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic configuration diagram showing an elevator control device according to a first embodiment of the present invention. As shown in FIG. 1, an elevator control device 30 according to the first embodiment of the present invention is provided for an elevator device 10.

As shown in FIG. 1, the elevator apparatus 10 includes a hoist 1 and a main rope 3 hung on the hoist 1.
a, an elevator car 4 and a counterweight 5 suspended at both ends of the main rope 3a. A hanging wheel (compensive) 2 is provided below the elevator car 4 and the counterweight 5. And the lower side of the elevator car 4 and the counterweight 5
It is connected by a hanging rope (compensation rope) 3b hung on the hanging vehicle 2.

The hoist 1 is driven by hoist driving means 9. Also, elevator car 4
Has a double structure of a car frame and a car room 6, with a vibration-proof rubber 7 interposed therebetween.

Elevator control device 30 of the present embodiment
Is provided with a load detecting means 31 for detecting a load inside the elevator car. The load detecting means 31 includes the vibration-proof rubber 7.
The load in the elevator car 4 is detected from the amount of deflection of the vibration isolating rubber 7, and is configured by, for example, a differential transformer.

The load detecting means 31 is connected to a balancing torque generating means 32 for generating a balancing torque in the driving means 9 based on the output value of the load detecting means 31. In the present embodiment, the torque generating means 32 is
0, and the load detecting means 31
0, a load input unit 43, a load correction unit 38 described later,
It is connected to the balancing torque generating means 32 via a torque calculating section 45 for calculating the torque applied to the driving means 9 based on the output value of the load detecting means 31.

The elevator control device 30 includes a speed detecting means 34 for detecting the speed of the elevator car 4, and a driving means for detecting that the speed of the elevator car 4 is the rated speed by the speed detecting means 34. 9 and a torque detecting means 35 for detecting the generated torque. In this case, the torque detecting unit 35 is provided for the driving unit 9, but may be provided for the torque calculating unit 45. The speed detecting means 34 is connected to the torque detecting means 35 via the speed input section 41 of the control unit 40.

A deriving section 37 for deriving the actual load inside the elevator car 4 based on the generated torque detected by the torque detecting means 35 is connected to the torque detecting means 35. The derivation unit 37 includes a load detection unit 31 based on the actual load derived by the derivation unit 37.
Is connected to a load correcting means 38 for correcting the output value.

Next, the operation of the present embodiment having the above configuration will be described.

When the elevator car 4 is stopped, the hoisting machine 1
, A brake (not shown) is operated.

When the elevator car 4 starts running, the brake is released. At the moment of the release of the brake, the hoisting machine 1 rotates toward the heavier one of the elevator car 4 and the counterweight 5. It is necessary to prevent that. Therefore, based on the weight of the elevator car 4 including the load in the elevator car 4 and the weight of the counterweight 5, the driving means 9 is used to cancel the weight imbalance.
Needs to be given a balancing torque.

Elevator control device 30 of the present embodiment
The load detecting means 31 detects the load in the elevator car 4. The load correction unit 38 calculates a load value from the output value of the load detection unit 31. Then, the torque calculation unit 45
Calculates the torque applied to the driving means 9 based on the load value obtained from the load detecting means 31. Elevator car 4
When the vehicle starts traveling, a balancing torque is given to the driving means 9 from the torque calculating section 45 via the balancing torque generating means 32. When the elevator car 4 travels, the traveling torque is superimposedly provided from the torque calculation unit 45 to the drive unit 9 via the traveling torque generation unit 48. The torque calculator 45 constantly calculates the torque required during elevator control (from releasing the brake to running / stopping the elevator).

The hoist 1 is driven by the torque given to the driving means 9, and the elevation of the elevator car 4 is controlled.

The torque superimposedly output from the balancing torque generating means 32 and the running torque generating means 48 is shown in FIG.
As shown in (2), it changes with the moving speed of the elevator car 4.

The torque superimposedly output from the balancing torque generating means 32 and the running torque generating means 48 changes according to the load in the car 4 as shown in FIG. That is, when there is no load in the car 4 (NL:
In the case of no-load, the counterweight 5 is heavier than the elevator car 4, so that a positive balancing torque is required at the start of the elevator. In a state where the load of the car 4 and the weight of the counterweight are balanced (BL: balance load), no balancing torque is required, and thus the balancing torque required at the start of the elevator is zero. Further, when the rated load is loaded in the car 4 (FL: full load), the car 4 is heavier than the counterweight 5, so that a negative balancing torque is required at the start of the elevator.

The output value of the load detector 31 according to the present embodiment changes linearly with respect to the load in the elevator car 4. That is, the relationship between the load in the car 4 and the output value is as shown by the solid line in FIG.

Here, when the vibration isolating rubber 7 bends,
As shown by the broken line in FIG. 4, the output characteristics may be shifted from zero adjustment. In addition, when the elastic coefficient of the vibration isolating rubber 7 changes, the output characteristic may change in inclination as shown by the dashed line in FIG.

As described above, when the output value of the load detecting means 31 does not correspond to the actual load in the car 4 due to the secular change of the vibration isolating rubber 7 or the like, an accurate balancing torque is not calculated, and the elevator is started when the elevator starts. Vibration may occur in the car 4.

Therefore, the control device 30 of the present embodiment derives the actual load based on the generated torque when the speed of the elevator car 4 is at the rated speed, and determines the actual load based on the derived actual load. Correct the load value. This correction process will be specifically described with reference to FIG.

As shown in FIG. 5, the load correction means 38
The output value WI input from the load input unit 43 is calculated by the following equation to obtain the load value WO (STEP 1).
1).

WO = (A × WI) + WA (1) where WI is the output value of the load detector 31, A is the initial value of the load gain adjustment coefficient, and B is the initial value of the zero load adjustment coefficient. WO is the calculated value of the load in the car.

Next, it is determined whether the elevator car 4 is running at the rated speed (STEP 12). This determination is made by the torque detecting means 35 based on the speed detected by the speed detecting means 34.

If the vehicle is traveling at the rated speed, the torque detecting means 35 detects the torque generated by the driving means 9 at that time (the balancing torque by the balancing torque generating means 32 + the running torque by the running torque generating means 48). The deriving unit 37 determines whether the torque is zero (ST
EP13). If the generated torque is zero, the load in the car 4 is B. L. (Balance load). Load correction means 3
8 is the load calculation value WO calculated in STEP 11 and B.
L. To adjust the load gain adjustment coefficient or the zero load adjustment coefficient (STEP 1).
4). In this case, a zero correction coefficient WB is introduced, WO = W _BL = A × WI + WA + WB (2), and a load zero adjustment coefficient (WA + WB) is obtained. Thereafter, the load detection device is obtained by using the expression on the right side of (2). The load calculation value WO is obtained from the output value of the reference numeral 31. That is, the load value is appropriately corrected by correcting the arithmetic expression for calculating the load calculation value WO from the output value WI of the load detection means 31.

As described above, according to the present embodiment, when the speed of the elevator car 4 is the rated speed, the generated torque (the balancing torque by the balancing torque generating means 32 + the running torque by the running torque generating means 48) is reduced. If it is zero, it is determined that the actual load is a balance load, and the load correction means 38 determines the load value WO from the output value of the load detection means 31.
Is corrected. Accordingly, the load value WO obtained from the output value of the load detecting means 31 can be made to correspond to the actual load regardless of the change in the output characteristic of the load detecting means 31 based on the deflection of the vibration-proof rubber 7 or the like.

Next, an elevator control apparatus according to a second embodiment of the present invention will be described with reference to FIG. FIG.
FIG. 3 is a schematic configuration diagram of an elevator control device 30 according to a second embodiment.

As shown in FIG. 6, the elevator control device 30 according to the present embodiment is connected to the car operation panel 4b provided in the elevator car 4 and the speed input section 41, and the elevator car 4 is stopped. And a determination unit 22 connected to the car operation panel 4b and the stop state detection unit 21 and configured to determine that there is no passenger in the elevator car 4. , Determination unit 22
When it is detected that there is no passenger in the elevator car 4, the actual load inside the elevator car 4 is set to zero.

The other structure is substantially the same as that of the first embodiment shown in FIG. In the second embodiment, the same parts as those in the first embodiment shown in FIG. 1 are denoted by the same reference numerals, and detailed description is omitted.

The stop state detecting section 21 and the discriminating section 22 are provided in the control unit 40, and the car operation panel 4 b is connected to the discriminating section 22 via a call input section 42 of the control unit 40.

The operation of the present embodiment will be described with reference to FIG. As shown in FIG.
It is determined whether or not a car call has been input for b (STEP 21).

Next, when it is determined that the car call input has not been made, it is determined whether or not the stop state detecting unit 21 has detected that the elevator car 4 has stopped (STEP 22).

When the car call is not input and the elevator car 4 is stopped, the determination unit 22
It is determined that there is no passenger in the elevator car 4. Then, the deriving unit 37 sets the load in the elevator car 4 in that case to zero (STEP 23).

The load correction means 38 calculates the load calculation value WO in the above-mentioned equation (1) by N.V. L. By inputting (no load) = 0, the load gain adjustment coefficient or the load zero adjustment coefficient is adjusted (STEP 24). in this case,
A zero correction coefficient WB is introduced, WO = W _NL = 0 = A × WI + WA + WB (3), and a zero load adjustment coefficient (WA + WB) is obtained. Thereafter, the load detection device is obtained by using the expression on the right side of (3). The load calculation value WO is obtained from the output value of the reference numeral 31. That is, the load value is properly corrected by correcting the arithmetic expression for calculating the load calculation value WO from the output value Wi of the load detection means 31.

As described above, according to the present embodiment, when it is determined by the determining unit 22 that there is no passenger in the elevator car 4, it is determined that the actual load is zero (no load). The load correction means 38 is the load detection means 31
The calculation formula for obtaining the load value WO from the output value WI is corrected. Thereby, regardless of the change in the output characteristic of the load detecting means 31 based on the deflection of the vibration isolating rubber 7, the load detecting means 31
Can be made to correspond to the actual load.

In the correction function by the load correction means 38, a load gain correction coefficient B is introduced, and W _BL = A × B × WI (when generated torque is zero) + WA + WB (2 ′) W _BL = 0 = A × B × WI (when there is no passenger) + WA + WB (3 ′) It is also possible to obtain the load gain adjustment coefficient (A × B) simultaneously by the following equations. In this case, a load value WO closer to the actual load can be obtained from the output value of the load detection means 31.

Next, an elevator control apparatus according to a third embodiment of the present invention will be described. In the elevator control device 30 of the present embodiment, the load correction unit 38 determines that the difference between the actual load derived by the derivation unit 37 and the load value obtained from the output value of the load detection unit 31 before correction is equal to or more than a predetermined amount. The configuration is substantially the same as that of the second embodiment shown in FIG. 6, except that the output value of the load detection means 31 is corrected only in the case of.

The operation of the present embodiment will be described with reference to FIG. As shown in FIG. 8, the load correction unit 38 determines whether the difference between the actual load derived by the derivation unit 37 and the load value obtained from the output value of the load detection unit 31 before correction is equal to or greater than a predetermined amount. (Step 31). Then, when it is determined that it is equal to or more than the predetermined amount, the load value by the load detecting means 31 is corrected (STEP 32). Specifically, the arithmetic expression for calculating the load value WO from the output value WI of the load detecting means 31 is corrected.

According to the present embodiment, the elevator car 4
By neglecting such a small amount of deviation that does not substantially generate the vibration, control processing can be speeded up.

Next, an elevator control apparatus according to a fourth embodiment of the present invention will be described with reference to FIG. FIG.
FIG. 9 is a schematic configuration diagram of an elevator control device 30 according to a fourth embodiment.

As shown in FIG. 9, the elevator control device 30 according to the present embodiment
7 and the load detection means 31 before correction
The configuration is substantially the same as that of the second embodiment shown in FIG. 6 except that an alarm generating means 39 for issuing an alarm when the difference from the output value due to is larger than a predetermined amount is connected. In the fourth embodiment, the same portions as those of the second embodiment shown in FIG. 6 are denoted by the same reference numerals, and detailed description is omitted.

The operation of the present embodiment will be described with reference to FIG. As shown in FIG. 10, the alarm generation unit 39 determines whether the difference between the actual load derived by the derivation unit 37 and the load value by the load detection unit 31 before correction is equal to or more than a predetermined amount (STEP 41). Then, when it is determined that it is equal to or more than the predetermined amount, an alarm is issued (STEP 42).

According to the present embodiment, the abnormality of the vibration isolating rubber 7 and the abnormality of the load detecting means 31 can be effectively notified to the outside. Here, the alarm generator 39 may employ various modes such as a display device such as an alarm lamp, an alarm buzzer, and a display on a remote monitoring terminal using a telephone line.

Next, an elevator control apparatus according to a fifth embodiment of the present invention will be described with reference to FIG. FIG.
FIG. 1 is a schematic configuration diagram of an elevator control device 30 according to a fifth embodiment.

As shown in FIG. 11, the elevator control device 30 of the present embodiment includes a first storage unit 51 for storing a reference torque when the elevator car 4 is loaded at a rated load and when the elevator car 4 is traveling at a rated speed. And a second storage unit 52 for storing the reference torque when no load is applied and when the vehicle is traveling at the rated speed.
The actual load inside the elevator car 4 is derived based on the two reference torques stored in the elevator car 4 and the traveling torque detected by the torque detecting means 35.

The other structure is substantially the same as that of the first embodiment shown in FIG. In the fifth embodiment, the same portions as those in the first embodiment shown in FIG. 1 are denoted by the same reference numerals, and detailed description is omitted.

The operation of the present embodiment will be described with reference to FIG. As shown in FIG. 12, the elevator car 4 is loaded with the rated load in advance (STEP 51), and the elevator car 4 runs at the rated speed (STEP 52). The generated torque at that time is defined as the reference rated torque ΔT _FL (FIG. 4). (Refer to STEP 5).
3).

Similarly, the elevator car 4 is previously set in a no-load state (STEP 54), the rated speed of the elevator car 4 is run (STEP 55), and the generated torque at that time is set as a reference no-load torque ΔT _NL (see FIG. 4). It is stored in the second storage unit 52 (STEP 56).

Now, the load correction means 38 of the control device 30
Calculates the load value by performing the calculation according to equation (1) on the output value input from the load input unit 43 (STEP 5).
7).

Next, it is determined whether the elevator car 4 is running at the rated speed (STEP 58). This determination is made by the torque detecting means 35 based on the speed detected by the speed detecting means 34.

If the vehicle is traveling at the rated speed, the torque detecting means 35 detects the torque generated by the driving means 9 at that time (the balancing torque by the balancing torque generating means 32 + the generated torque by the generated torque generating means 48). The deriving unit 37 derives the actual load from the relative relationship between the torque and the reference rated torque ΔT _FL and the reference no-load torque ΔT _NL (STEP 59).

Specifically, for example, the reference rated torque ΔT
_FLIs -10 and the standard no-load torque ΔT _NLIs +10,
When the generated torque is +5, the actual load is 25 of the rated load.
%.

The load correction means 38 adjusts the load gain adjustment coefficient or the load zero adjustment coefficient by inputting the actual load value WR estimated by the derivation unit 37 into the load calculation value WO calculated in STEP 57 (STEP 60). ).
In this case, a zero correction coefficient WB is introduced, and a load zero adjustment coefficient (WA + WB) is obtained as WO = WR = A × WI + WA + WB (4), and the load detection device 31 is calculated using the equation on the right side of (4). The load calculation value WO is obtained from the output value of. That is, the load value is appropriately corrected by correcting the arithmetic expression for calculating the calculated load value WO from the output value of the load detection means 31.

According to the present embodiment, the actual load is determined based on the reference torques ΔT _FL and ΔT _NL stored in the first storage section 51 and the second storage section 52 and the generated torque detected by the torque detecting means 35. WR is derived, and the load correction means 38 corrects the arithmetic expression for obtaining the load value WO from the output value of the load detection means 31 based on the derived actual load. Thus, the load detecting means 31 based on the deflection of the vibration isolating rubber 7 or the like.
Irrespective of the output characteristic change, the load value WO obtained from the output value of the load detecting means 31 can be made to correspond to the actual load.

In this embodiment, since the actual load is obtained for an arbitrary load value, the output values WI and WI 'of the load detecting means for two different load values and the estimated actual load WR , WR ′, it is also possible to obtain the following simultaneous equations to obtain the gain adjustment coefficient B in addition to the zero load adjustment coefficient A.

WR = A × B × WI + WA + WB (5) WR ′ = A × B × WI ′ + WA + WB (6) Next, FIG. 13 shows an elevator control device according to the sixth embodiment of the present invention. It will be described using FIG. FIG. 13 is a schematic configuration diagram of an elevator control device 30 according to the sixth embodiment.

As shown in FIG. 13, the elevator control device 30 of this embodiment causes the speed detecting means 34 and the driving means 9 to set the speed of the elevator car 4 to zero when the brake of the elevator car 4 is released. Second torque generating means 61 for generating zero control torque is connected to the driving means 9,
The deriving unit 37 compares the balancing torque generated by the torque generating means 32 with the zero control torque generated by the second torque generating means 61, and when the two are different, the elevator is determined based on the zero control torque. The actual load inside the car 4 is derived.

The other structure is substantially the same as that of the first embodiment shown in FIG. In the sixth embodiment, the same parts as those in the first embodiment shown in FIG. 1 are denoted by the same reference numerals, and detailed description is omitted.

The operation of the present embodiment will be described with reference to FIG. As shown in FIG.
Calculates the load value by performing the calculation of Expression (1) on the output value input from the load input unit 43 (STEP 61).
The torque calculator 45 calculates the balancing torque (STE
P62). The balancing torque is provided from the balancing torque generating means 48 to the driving means 9.

Next, the brake of the hoisting machine 1 is released, and the traveling of the elevator car 4 is started (STEP 63).
At this time, whether or not the elevator car 4 immediately moves is detected by the speed detecting means 34 (STEP 6).
4). If the balancing torque accurately corresponds to the load in the car 4, the elevator car 4 does not move, but if the balancing torque does not accurately correspond to the load in the elevator car 4, the elevator Move.

The second torque generating means 61 generates a zero control torque to make the speed of the elevator car 4 zero when the elevator car 4 immediately moves (STEP 6).
5), is sent to the driving means 9 instead of the balancing torque. This zero control torque is adjusted by feeding back the speed of the elevator every moment. Then, the deriving unit 37 derives the actual load from the zero control torque (corresponding to the true balancing torque) when the speed of the elevator becomes zero (STEP 6).
6).

The load correction means 38 adjusts the load gain adjustment coefficient or the load zero adjustment coefficient by inputting the actual load value derived by the derivation unit 37 into the load calculation value WO calculated in STEP 61 (STEP 67). .

According to the present invention, the actual load is derived based on the zero control torque, and the load correction means 38 calculates the load value WO from the output value of the load detection means 31 based on the derived actual load. to correct. Accordingly, the load value W obtained from the output value of the load detecting means 31 regardless of the output characteristic change of the load detecting means 31 based on the deflection of the vibration isolating rubber 7 or the like
O can correspond to the actual load.

In the present embodiment, since the actual load is obtained for an arbitrary load value, the output values WI and WI 'of the load detecting means for two different load values and the actual loads WR and WR' Therefore, it is also possible to obtain a gain adjustment coefficient B in addition to the zero load adjustment coefficient A by setting simultaneous equations such as the above-mentioned equations (5) and (6).

[0085]

As described above, according to the present invention,
The actual load is derived based on the generated torque when the speed of the elevator car is the rated speed, and the load correction means corrects the load value by the load detection means based on the derived actual load. Regardless of the secular change of the characteristic, the load value by the corrected load detecting means can be made to correspond to the actual load.

According to the present invention, the actual load is derived based on the reference torque stored in the storage unit and the generated torque detected by the torque detecting means, and the load correction means is provided based on the derived actual load. Since the load value by the load detecting means is corrected, the corrected load value by the load detecting means can be made to correspond to the actual load regardless of the aging of the output characteristics of the load detecting means.

According to the present invention, the actual load is derived based on the zero control torque, and the load correction means corrects the load value by the load detection means based on the derived actual load.
Regardless of the aging of the output characteristics of the load detecting means, the load value of the corrected load detecting means can be made to correspond to the actual load.

As described above, the output value of the load detecting means for detecting the load in the elevator car can be automatically adjusted.
It is possible to improve the riding comfort at the start of the elevator traveling and to save labor for adjusting the load detecting means.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an elevator control device according to a first embodiment of the present invention.

FIG. 2 is a diagram showing an example of the relationship between the speed of the elevator car of FIG. 1 and the generated torque of the hoist.

FIG. 3 is a diagram showing an example of a relationship between a load in the elevator car of FIG. 1 and a generated torque of a hoist.

FIG. 4 is a view showing an example of output characteristics of the load detecting means of FIG. 1;

FIG. 5 is a flowchart showing a main part of the operation of the elevator control device of FIG. 1;

FIG. 6 is a schematic configuration diagram of an elevator control device according to a second embodiment of the present invention.

FIG. 7 is a flowchart showing a main part of the operation of the elevator control device of FIG. 6;

FIG. 8 is a flowchart showing a main part of the operation of the elevator control device according to the third embodiment of the present invention.

FIG. 9 is a schematic configuration diagram of an elevator control device according to a fourth embodiment of the present invention.

FIG. 10 is a flowchart showing a main part of the operation of the elevator control device of FIG. 9;

FIG. 11 is a schematic configuration diagram of an elevator control device according to a fifth embodiment of the present invention.

FIG. 12 is a flowchart showing an essential part of the operation of the elevator control device of FIG. 11;

FIG. 13 is a schematic configuration diagram of an elevator control device according to a sixth embodiment of the present invention.

FIG. 14 is a flowchart showing a main part of the operation of the elevator control device in FIG. 13;

FIG. 15 is a schematic view of a conventional elevator and its control device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hoisting machine 2 Hanging car 3a Main rope 3b Hanging rope 4 Elevator car 4b Car operation panel 5 Counterweight 6 Car room 7 Anti-vibration rubber 9 Driving means 10 Elevator device 21 Stop state detecting part 22 Judgment part 30 Elevator control Apparatus 31 Load detecting means 32 Balance torque generating means 34 Speed detecting means 35 Torque detecting means 37 Deriving unit 38 Load correcting means 39 Alarm generating means 40 Control unit 41 Speed input unit 42 Call input unit 43 Load input unit 45 Torque calculating unit 51 1 storage unit 52 second storage unit 61 second torque generating means

Claims (6)

[Claims] A load detecting means for detecting a load inside the elevator car; a torque generating means for generating a balancing torque to a driving means of the elevator car based on a load value by the load detecting means; Speed detecting means for detecting the speed of the elevator car, torque detecting means for detecting the generated torque of the driving means when the speed of the elevator car is detected to be the rated speed, and the torque detecting means A deriving unit that derives an actual load inside the elevator car based on the generated torque detected by: based on the actual load derived by the deriving unit,
An elevator control device comprising: a load correction unit that corrects a value detected by the load detection unit. 2. A load detecting means for detecting a load inside the elevator car, a torque generating means for generating a balancing torque to a driving means of the elevator car based on a load value by the load detecting means, and the elevator car. Speed detecting means for detecting the speed of the elevator car, a storage unit for storing a reference torque at the time of rated loading of the elevator car and running at the rated speed, and the speed detecting means detects that the speed of the elevator car is the rated speed. In this case, based on the torque detection means for detecting the generated torque of the driving means, the reference torque stored in the storage unit and the generated torque detected by the torque detection means,
A deriving unit for deriving an actual load inside the elevator car, based on the actual load derived by the deriving unit,
An elevator control device comprising: a load correction unit that corrects a load value by the load detection unit. 3. A load detecting means for detecting a load inside the elevator car, a torque generating means for generating a balancing torque to a driving means of the elevator car based on a load value by the load detecting means, and the elevator car. Speed detecting means for detecting the speed of the second car; second torque generating means for generating a zero control torque in the driving means so as to make the speed of the elevator car zero when the brake of the elevator car is released; and The generated balancing torque is compared with the zero control torque generated by the second torque generating means, and when the two are different, the actual load inside the elevator car is determined based on the zero control torque. A deriving unit that derives, based on the actual load derived by the deriving unit,
An elevator control device comprising: a load correction unit that corrects a load value by the load detection unit. 4. The vehicle according to claim 1, further comprising a determining unit configured to determine that there is no passenger in the elevator car, wherein the deriving unit determines that the elevator has no passenger in the elevator car. The elevator control device according to any one of claims 1 to 3, wherein an actual load inside the car is set to zero. 5. The load correction means according to claim 1, wherein said load correction means detects the load by said load detection means only when a difference between said actual load derived by said derivation unit and a load value by said load detection means before correction is a predetermined amount or more. The elevator control device according to any one of claims 1 to 4, wherein the value is corrected. 6. An alarm generating means for issuing an alarm when a difference between the actual load derived by the deriving unit and the load value by the load detecting means before correction is equal to or more than a predetermined amount. The elevator control device according to any one of claims 1 to 5, wherein