JP2010208772A - Elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve working efficiency when adjusting a balance between a car and a counterweight of an elevator with no-load. <P>SOLUTION: An average torque calculating device 11 respectively calculates an average value of a torque command value of a steady travel state in lowering operation and rising operation of the car 8 of a no-load state. After finishing travel, a balance torque calculating part 12 calculates balance torque being average torque between an average value of the torque command value in the lowering operation and an average value of the torque command value in the rising operation. A load converting device 13 converts the calculated balance torque into a load value. A weight quantity calculating device 14 calculates a difference between the converted load value and a loading value corresponding to a balance load as a required adjusting quantity of weight of a counterweight 9. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an elevator having a function of adjusting a balance of a suspension type riding car and a suspension weight.

  Conventionally, in order to adjust the balance of the elevator car and the suspension weight, that is, to make the weight of the carriage and the weight of the suspension weight the same at the balance load, a test weight equivalent to the balance road is applied to the carriage. The balance was adjusted by loading. In this case, test weights are required for balance adjustment, and the preparation of the test weights, loading into the building, and loading / unloading work on the car is a heavy burden.

  Further, as a method for adjusting the balance of the car and the suspension weight without using the test weight, for example, as disclosed in Patent Document 1, each of the no-load state car during the ascending operation and the descending operation The current value is measured, the average value of these measurement results is compared with the recommended current value previously investigated, and the weight adjustment value of the suspended weight is calculated by multiplying the difference value obtained by this comparison by the conversion factor. There is something to do.

JP 2005-306557 A

  In the adjustment method that does not use the test weight described above, the recommended current value for comparison with the current value measured in the field during operation is obtained by examining the current characteristics of the elevator motor in advance. It is necessary to create a table for comparison with the current measurement value for each type in advance, and it takes time and labor to create this table. In addition, since the current value measured during operation is an average value when the ascending operation and the descending operation are repeated several times, it takes time and labor to measure the current value. For these reasons, the work efficiency for adjusting the balance of the unloaded riding car and the suspension weight has been insufficient.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an elevator that can improve the work efficiency when the balance of the elevator car and the suspension weight is adjusted with no load.

  That is, the elevator according to the present invention includes a car that is wound around a sheave and connected to a counterweight via a rope and suspended, a hoist that rotates the sheave, and a command value for the traveling speed of the car Based on a deviation between the speed command value set by the speed command means and the speed detection value detected by the speed detection means. Torque command output means for outputting a torque command value signal for controlling the rotational speed of the hoisting machine, and controlling the current supplied to the hoisting machine based on the torque command value indicated by the signal output from the torque command output means Current control means, torque command detection means for detecting a torque command value output from the torque command output means, and the car in a no-load state The average value of the torque command value detected by the torque command detection means during the ascending operation steady running during one reciprocating operation is calculated, and the torque command detection means during the descending steady running during the one reciprocating operation. Average torque calculation means for calculating an average value of the detected torque command values, and an average value of the calculated value at the time of steady running in the ascending operation and the calculated value at the time of steady running in the descending operation by the average torque calculating means. The suspension torque calculation means for calculating the suspension torque by calculating, the load conversion means for converting the suspension torque calculated by the suspension torque calculation means into a load value, and the load value converted by the load conversion means Weight calculation to calculate the adjustment value of the weight of the counterweight by calculating the difference from the predetermined balance load load value Characterized by comprising a stage.

  Further, the elevator according to the present invention includes a car that is wound around a sheave and is connected to a counterweight via a rope and suspended, a hoist that rotates the sheave, and a command value for the traveling speed of the car Based on a deviation between the speed command value set by the speed command means and the speed detection value detected by the speed detection means. Torque command output means for outputting a torque command value signal for controlling the rotational speed of the hoisting machine, and controlling the current supplied to the hoisting machine based on the torque command value indicated by the signal output from the torque command output means Current control means, torque command detection means for detecting a torque command value output from the torque command output means, position in the hoistway of the car An intermediate position between the uppermost floor and the lowermost floor of the hoistway, in which the position detected by the car position detecting means and the position detected by the car position detecting means is a range located for calculating the suspension torque. If the position detected by the car position detection means is not within the predetermined range, the command value of the running speed set by the speed command means is switched to the first speed value when the position is within the predetermined range. The speed switching means for switching the command value of the running speed set by the speed command means to a second speed value faster than the first speed, and the torque command detection means during the ascending operation or descending operation of the car An average torque calculation means for calculating an average value of the detected torque command values and a speed switching command value set by the speed command means by means of the speed switching means. The suspension torque is calculated by calculating an average value of the calculated value at the time of the rising operation of the car and the calculated value at the time of the lowering operation of the car by the average torque calculating means in the case of switching to the degree value. A suspension torque calculation means for calculating the load torque, a load conversion means for converting the suspension torque calculated by the suspension torque calculation means into a load value, a load value converted by the load conversion means, and a predetermined balance load load value, Weight calculating means for calculating an adjustment value of the weight of the counterweight by calculating the difference between the counterweights.

  Further, the elevator according to the present invention includes a car that is wound around a sheave and is connected to a counterweight via a rope and suspended, a hoist that rotates the sheave, and a command value for the traveling speed of the car Based on a deviation between the speed command value set by the speed command means and the speed detection value detected by the speed detection means. Torque command output means for outputting a torque command value signal for controlling the rotational speed of the hoisting machine, and controlling the current supplied to the hoisting machine based on the torque command value indicated by the signal output from the torque command output means Current control means, torque command detection means for detecting the torque command value output from the torque command output means, and the operation mode of the car. Between the normal operation mode for raising and lowering the car according to the above and the inspection operation mode for manually raising and lowering the car at a rated speed lower than the rated speed in the normal operation mode regardless of the presence or absence of the call registration. An operation mode switching means for switching, a car position detection means for detecting a position of the car in a hoistway, and the car when the operation mode of the car is switched to the inspection operation mode by the operation mode switching means. The torque command value detected by the torque command detection means when the position detected by the position detection means is near the top floor and the torque command detection means when the position detected by the car position detection means is near the bottom floor. The suspension torque is calculated by calculating the average value with the torque command value detected by The suspension torque calculation means, the load conversion means for converting the suspension torque calculated by the suspension torque calculation means into a load value, and the difference between the load value converted by the load conversion means and a predetermined balance load load value Weight calculating means for calculating an adjustment value of the weight of the counterweight by calculation is provided.

  Further, the elevator according to the present invention includes a car that is wound around a sheave and is connected to a counterweight via a rope and suspended, a hoist that rotates the sheave, and a command value for the traveling speed of the car Based on a deviation between the speed command value set by the speed command means and the speed detection value detected by the speed detection means. Torque command output means for outputting a torque command value signal for controlling the rotational speed of the hoisting machine, and controlling the current supplied to the hoisting machine based on the torque command value indicated by the signal output from the torque command output means Current control means, torque command detection means for detecting a torque command value output from the torque command output means, position in the hoistway of the car The position detected by the car position detecting means is an intermediate position between the uppermost floor and the lowermost floor in order to detect the car position detecting means, the brake device for braking the hoisting machine, and the suspension torque. When the position detected by the car position detecting means becomes the intermediate position by switching the command value of the running speed set by the speed command means so as to be positioned, the travel set by the speed command means A speed switching means for switching the speed command value to zero, a brake control means for releasing the braking operation by the brake device when the command value set by the speed command means is zero by the speed switching means, and When the braking operation by the brake device is released, the torque command value detected by the torque command detection means is detected. A suspension torque calculation means for calculating the suspension torque, a load conversion means for converting the suspension torque calculated by the suspension torque calculation means into a load value, and a load value converted by the load conversion means, Weight calculating means for calculating an adjustment value of the weight of the counterweight by calculating a difference from a predetermined balance load load value is provided.

  ADVANTAGE OF THE INVENTION According to this invention, the working efficiency at the time of performing balance adjustment of the elevator car and the suspension weight with no load can be improved.

The figure which shows the structural example of the elevator in the 1st Embodiment of this invention. The flowchart which shows an example of the processing operation for the balance adjustment by the elevator in the 1st Embodiment of this invention. The figure which shows an example of the torque waveform at the time of making the elevator car in the 1st Embodiment of this invention carry out one reciprocation operation by normal operation. The figure which shows the structural example of the elevator in the 2nd Embodiment of this invention. The flowchart which shows an example of the processing operation for calculation of the torque instruction average value regarding the balance adjustment by the elevator in the 2nd Embodiment of this invention. The figure which shows the structural example of the elevator in the 3rd Embodiment of this invention. The flowchart which shows an example of the processing operation for calculation of the suspension torque regarding the balance adjustment by the elevator in the 3rd Embodiment of this invention. The figure which shows an example of the torque waveform at the time of making the elevator car in the 3rd Embodiment of this invention carry out one reciprocation operation by inspection operation. The figure which shows the structural example of the elevator in the 3rd Embodiment of this invention. The flowchart which shows an example of the processing operation for calculation of the suspension torque regarding the balance adjustment by the elevator in the 4th Embodiment of this invention. The figure which shows the structural example of the elevator in the 5th Embodiment of this invention.

Embodiments of the present invention will be described below with reference to the drawings.
(First embodiment)
First, a first embodiment of the present invention will be described.
FIG. 1 is a diagram illustrating a configuration example of an elevator according to the first embodiment of the present invention.
As shown in FIG. 1, the elevator according to the first embodiment of the present invention includes a speed command device 1, a speed control device 2, a current control device 3, a current detection device 4, a speed detection device 6, and a motor 5 that is a hoisting motor. , Sheave 7, car 8, suspension weight (counterweight, C / W) 9, torque command detection device 10, average torque calculation device 11, suspension torque calculation device 12, load conversion device 13, weight amount calculation device 14 BL (balance load) load setting device 15.

  The car 8 is connected to the C / W 9 via a rope wound around the sheave 7 provided corresponding to the car 8, and together with the C / W 9 along with the rotation of the sheave 7 driven by the motor 5. Move up and down in opposite directions.

  Here, an outline of the present embodiment will be described. This elevator travels while compensating the unbalance between the car 8 and the C / W 9 with a compensation torque called suspension torque, and the balance point between the car 8 and the C / W 9 is adjusted. In the NL (no load) state in which no passengers or luggage are loaded in the car 8, a suspension torque equivalent to BL is output to the car 8 side in terms of a load conversion value.

  In other words, if the load conversion value of the suspension torque in the NL state is equivalent to BL, it can be said that the balance point between the car 8 and C / W 9 is adjusted. Therefore, the adjustment weight amount of C / W9 necessary for adjusting the balance point between the car 8 and C / W9 is to calculate the difference between the load conversion value of the suspension torque in the NL state and the load value equivalent to BL. Can be determined.

The speed command device 1 outputs a signal indicating a speed command value according to a predetermined traveling pattern of the car 8.
The speed detection device 6 detects the rotation speed of the motor 5. The speed control device 2 calculates a deviation between the speed command value from the speed command device 1 and the speed value detected by the speed detection device 6, and a torque command value for controlling the rotational speed of the motor 5 so as to eliminate this deviation. A signal indicating is output.

The current control device 3 determines a target value for the supply current value to the motor 5 based on the output value from the speed control device 2.
The current detection device 4 detects a supply current value to the motor 5 and outputs a signal indicating this value to the current control device 3.

The current control device 3 controls the control value of the supply current to the motor 5 so that the supply current value detected by the current detection device 4 becomes the target value of the supply current value.
The torque command detection device 10 detects the torque command value output from the speed control device 2 at predetermined time intervals. The average torque calculation device 11 is an average value of torque command values detected by the torque command detection device 10 at predetermined time intervals in the steady running state during the ascending operation of the NL state car 8, that is, the running state at the rated speed, and the NL The average values of the torque command values detected at predetermined time intervals by the torque command detection device 10 in the steady running state during the descending operation of the car 8 in the state are calculated.

The suspension torque calculation device 12 calculates, as the suspension torque, a value obtained by averaging the calculated value during the ascending operation described above by the average torque calculation device 11 and the calculated value during the descent operation.
The load conversion device 13 converts the suspension torque calculated by the suspension torque calculation device 12 into a load value using a predetermined conversion equation.

  The BL load setting device 15 sets a load value corresponding to a predetermined BL. The weight amount calculation device 14 calculates the difference between the load value converted by the load conversion device 13 and the BL equivalent load value set by the BL load setting device 15 as a required adjustment amount of the weight of C / W9.

  Next, a processing operation for adjusting the balance between the elevator car 8 having the configuration shown in FIG. 1 and the C / W 9 will be described. FIG. 2 is a flowchart illustrating an example of a processing operation for balance adjustment by the elevator according to the first embodiment of the present invention. FIG. 3 is a diagram illustrating an example of a torque waveform when the elevator car according to the first embodiment of the present invention is reciprocated once in normal operation. The torque waveform shown in FIG. 3 is assumed to be a traveling waveform of an elevator without torque fluctuation due to the rope's own weight.

  Here, an outline of the processing operation will be described. In this elevator, the car 8 is first reciprocated between the uppermost floor and the lowermost floor, the suspension torque is calculated, the load of the suspension torque is converted, and then the weight of C / W9 is calculated. The required adjustment amount is calculated.

  Next, details of the processing operation will be described. As an initial state, the car 8 is assumed to be located on the top floor in the NL state. In this state, the speed command device 1 outputs a speed command for causing the car 8 in the NL state to travel from the top floor to the bottom floor. The rated speed of this traveling is assumed to be lower than the rated speed during normal operation in which passengers are placed in order to reduce the influence of vibration on the calculation result of the suspension torque.

  In this state, the average torque calculation device 11 detects whether or not the traveling state of the car 1 is a steady traveling state based on the detection result by the torque command detecting device 10 of the torque command value from the speed control device 2. Then, when it is detected that the vehicle is in a steady running state, a torque command value at a predetermined time interval, which is a detection result by the torque command detection device 10, is obtained from the start to the end of steady running, and an average value TmAveDN of the obtained result is obtained. Calculate (step S1).

  Since it is easily affected by vibration and noise from the rails while traveling, the torque command value is calculated and averaged from the start to the end of steady traveling as described above. Compared with the case where the torque command value is detected at a single point in the position, it is possible to detect the exact suspension torque.

  Next, the speed command device 1 outputs a speed command for causing the car 8 in the NL state to travel from the lowest floor to the highest floor. The rated speed of this traveling is lower than the rated speed during normal operation with passengers in the same manner as during descending operation. In this state, the torque command detection device 10 detects whether or not the traveling state of the car 1 is a steady traveling state based on the detection result by the torque command detection device 10 of the torque command value from the speed control device 2. Then, when it is detected that the vehicle is in a steady running state, a torque command value at a predetermined time interval, which is a detection result by the torque command detection device 10, is acquired from the start to the end of steady running, as in the descent operation. The average value TmAveUP of the acquisition results is calculated (step S2).

  After traveling, the suspension torque calculation device 12 calculates the suspension torque TmDif, which is the calculated average torque of TmAveUP and TmAveDN, according to the following equation (1) (step S3).

TmDif = (TmAveUP + TmAveDN) / 2 (1)
In this way, when the suspension torque TmDif is calculated by calculating the average value of the torque TmAveUP during the ascending operation and the average value TmAveDN of the torque during the descending operation, it is generated in each of the ascending operation and the descending operation. Since the traveling losses to be canceled out as shown in FIG. 3, an accurate suspension torque TmDif can be calculated.

  Next, the load conversion device 13 performs load conversion of the suspension torque calculated by the suspension torque calculation device 12 (step S4). The relationship between torque and force is expressed as torque = distance from the rotation axis × force. Therefore, when the motor sheave diameter is D [m] and the load conversion value of the suspension torque TmDif is WT_Dif [kg], the suspension torque TmDif [N · m] is expressed by the following equation (2).

TmDif = (D / 2) × (WT_Dif × 9.8) Equation (2)
When this equation (2) is modified, the following equation (3) is obtained.

WT_Dif = TmDif / (D / 2) × 9.8 (3)
It becomes.
Therefore, the weight converted value WT_Dif of the suspension torque TmDif is determined by substituting the calculated suspension torque TmDif and sheave diameter D into the right side of the above equation (3).

  Finally, the weight amount calculation device 14 acquires the load value WT_BL equivalent to BL set by the BL load setting device 15, and calculates the calculated load converted value WT_Dif and the acquired load value WT_BL equivalent to BL as described above. , That is, the required adjustment amount WT_ADj of the weight of C / W9 for balance adjustment between the car 8 and C / W9 is calculated according to the following equation (4) (step S5).

WT_ADj = WT_Dif−WT_BL (4)
When the calculated adjustment amount WT_ADj is a positive value, this value is a weight that needs to be added to C / W9. When the calculated adjustment amount WT_ADj is a negative value, this value is a weight that needs to be lowered from C / W9.

  As described above, in the elevator according to the first embodiment of the present invention, when adjusting the balance point between the car 8 and the C / W 9, it is not necessary to load test weights or measure current as in the prior art. In addition, since the adjustment value of the weight of the C / W 9 can be accurately obtained only by causing the car 8 to perform one reciprocating operation, the man-hour and cost for adjustment can be reduced. Therefore, the work efficiency concerning the balance adjustment of the elevator car in the unloaded state and the suspension weight can be greatly improved.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. In the following embodiments, the description of the same parts as those shown in FIG. 1 will be omitted.
FIG. 4 is a diagram illustrating a configuration example of an elevator according to the second embodiment of the present invention.
As shown in FIG. 4, the elevator according to the second embodiment of the present invention further includes a governor PG 16, a car position detection device 17, and a speed switching device 18 as compared with the first embodiment.

  The car position detection device 17 detects car position information generated based on the pulse data output from the governor PG 16 and outputs the detection result to the speed switching device 18 and the average torque calculation device 11.

The speed switching device 18 outputs a speed switching command to the speed command device 1 according to the car position detected by the car position detection device 17.
The average torque calculation device 11 performs a torque average calculation process switching process according to the car position detected by the car position detection device 17.

  In the second embodiment, the torque detection position is limited in order to more efficiently perform the detection of the torque command value described in the first embodiment, and the traveling speed is set at the car position where torque detection is not performed. Switch to high speed.

  Specifically, when the car position is at or near the middle position where it is not affected by the rope's own weight unbalance, the traveling speed is switched to low speed to detect torque, and torque detection is performed at other positions. The car 8 is driven at a high speed without performing. In the torque detection, average value processing by the average torque calculation device 11 is performed in the same manner as in the first embodiment in order to improve accuracy.

  In other words, assuming that the up / down stroke of the car 8 is X and the average value processing area by the average torque calculator 11 is α, the average value processing is performed when the car position is within the range of X / 2 ± α.

Next, a specific calculation process of the torque average value will be described. FIG. 5 is a flowchart illustrating an example of a processing operation for calculating a torque command average value related to balance adjustment by an elevator according to the second embodiment of the present invention. Here, only the calculation of the torque command average value during the descent operation will be described, but during the ascending operation, the torque command average value can be calculated in the same procedure after the start of traveling.
As an initial state, it is assumed that the car 8 is located near the top floor in the NL state. In this state, the speed command device 1 outputs a travel command for the descent operation of the car 8 in the NL state (step S11). After the start of traveling, the speed switching device 18 determines whether or not the car position detected by the car position detection device 17 is within the range of X / 2 ± α (step S12).

  When the car position is within the range of X / 2 ± α (YES in step S12), the speed switching device 18 is a low speed that is lower than the rated speed during normal operation in which the speed of the car 8 is put on the passenger. Is output to the speed command device 1. The reason why the speed of the car 8 is made lower than the rated speed during normal operation is to reduce the vibration from the rail to the car 8 and suppress the detection error of the torque command value.

  In this case, the average torque calculation device 11 obtains a detection result from the car position detection device 17 that the car position is within the range of X / 2 ± α. The average torque calculation device 11 is based on the detection result by the torque command detection device 10 only when the detection result that the car position is within the range of X / 2 ± α is obtained from the car position detection device 17. The average value TmAveDN is calculated (step S13).

  On the other hand, when the car position is not within the range of X / 2 ± α (NO in step S12), the speed switching device 18 outputs a command to increase the speed of the car 8 to the speed command device 1. This speed is faster than the low speed indicated by the command output when the car position is in the range of X / 2 ± α, as described above, and is the same as the rated speed during normal operation for passengers to ride. .

  In this case, the average torque calculation device 11 obtains a detection result from the car position detection device 17 that the car position is not within the range of X / 2 ± α. In this case, the average torque calculation device 11 does not calculate the torque average value TmAveDN based on the detection result by the torque command detection device 10 (step S14).

  In the present embodiment, these processes are also performed during the ascending operation, and are the processes of step S3 described in the first embodiment based on the average torque values TmAveDN and TmAveUP obtained in the descending and ascending operations. The processing from the calculation of the suspension torque by the suspension torque calculation device 12 to the determination of the necessary adjustment value of the weight of C / W9, which is the processing of step S5, is performed.

  As described above, in the elevator according to the second embodiment of the present invention, the detection point of the torque command value from the speed control device 2 that is necessary for calculating the suspension torque is compared with the first embodiment. Since the traveling speed is high at a car position other than this detection point, it is possible to further shorten the time required for the work for adjusting the balance between the car 8 and the C / W 9 as compared with the first embodiment. . It is especially effective for properties with a long lifting process.

(Third embodiment)
Next, a third embodiment of the present invention will be described. FIG. 6 is a diagram illustrating a configuration example of an elevator according to the third embodiment of the present invention.
As shown in FIG. 6, the elevator according to the third embodiment of the present invention further includes a governor PG 16, a car position detection device 17, and an operation mode switching device 19 as compared with the first embodiment. The torque calculator 11 is not provided.

  The car position detection device 17 detects car position information generated based on the pulse data output from the governor PG 16 and outputs the detection result to the speed command device 1 and the suspension torque calculation device 12.

  The operation mode switching device 19 follows a normal operation mode in which the operation mode of the car 8 is moved up and down according to call registration according to an operation by an operator on an operation unit (not shown), regardless of whether or not a call is registered. One of the operation modes is set in the inspection operation mode in which the car 8 is moved up and down at an inspection speed that is lower than the rated speed in the normal operation mode in accordance with a manual operation of an inspection operation controller (not shown) of the car 8. Device. The speed command device 1 issues a speed command according to the set mode.

  The inspection operation controller includes an ascending operation switch and a descending operation switch for operation by an operator. The ascending operation switch and the descending operation switch can switch the switching state between an on state and an off state.

  When the ascending operation switch is turned on by the operator's operation in the inspection operation mode, the car 8 rises at the inspection speed, and when the ascending operation switch is turned off by the operation again, the car 8 stops.

  Further, when the lowering operation switch is turned on by the operator's operation in the inspection operation mode, the car 8 is lowered at the inspection speed, and when the lowering operation switch is turned off by the second operation, the car 8 is stopped.

FIG. 7 is a flowchart illustrating an example of a processing operation for calculating a suspension torque related to balance adjustment by an elevator according to the third embodiment of the present invention. FIG. 8 is a diagram illustrating an example of a torque waveform when the elevator car according to the third embodiment of the present invention is reciprocated once in an inspection operation.
In the third embodiment, instead of the processing from the steps S1 to S3 described in the first embodiment to the suspension torque detection, the torque command value at the time of the inspection operation with less travel loss is used as the suspension torque. To detect.

  As an initial state, it is assumed that the car 8 is positioned below the top floor in the NL state, and the operation mode is the normal operation mode. In this state, when the operation mode switching device 19 sets the operation mode to the inspection operation mode in accordance with the operation by the operator, the operation mode switching device 19 outputs a notification signal to that effect to the speed command device 1 and the suspension torque calculation device 12 (step S21). ). At this time, both the ascending operation switch and the descending operation switch of the inspection operation operating device are in the off state.

When the speed command device 1 receives the notification signal from the operation mode switching device 19 and the lift operation switch of the inspection operation controller is turned on by the operator's operation, the NL state car 8 is the highest in inspection speed. Command the speed to go to the floor.
Then, when the car 8 reaches the vicinity of the top floor at the inspection speed, the car position detected by the car position detection device 17 becomes the vicinity of the top floor, and the ascending operation switch of the inspection operation controller is operated by the operator. The suspension torque calculation device 12 detects the torque command value detected by the torque command detection device 10 at this time as the running torque TmINS_TOP near the top floor (step S22).

Further, as described above, after the car position detected by the car position detection device 17 is near the top floor, and the ascending operation switch of the inspection operation controller is returned to the OFF state by the operation of the operator, the inspection operation is performed. When the descent operation switch of the operating device is turned on by the operator's operation, the speed command device 1 issues a speed command so that the car 8 is directed to the lowest floor at the inspection speed.
When the car 8 reaches the vicinity of the lowermost floor at the inspection speed, the car position detected by the car position detecting device 17 is in the vicinity of the lowermost floor, and the descending operation switch of the inspection operation controller is When the operation returns to the off state, the suspension torque calculation device 12 detects the torque command value detected by the torque command detection device 10 at this time as the running torque TmINS_BOT near the lowest floor (step S23).

  As shown in FIG. 8, TmINS_TOP and TmINS_BOT each include the same amount of rope self-weight compensation torque TmCMP around the intermediate position. The suspension torque calculation device 12 calculates a suspension torque TmDif that is an average value of TmINS_TOP and TmINS_BOT according to the following equation (5) (step S24).

TmDif = (TmINS_TOP + TmINS_BOT) / 2 Equation (5)
In this way, the torque command value near the uppermost floor and the torque command value near the lowermost floor can be averaged to cancel the rope self-weight compensation torque TmCMP, so that an accurate suspension torque TmDif can be calculated.
After this, the processing after step S4 described in the first embodiment is performed, and the required adjustment amount of the weight of C / W 9 is finally determined.

  As described above, in the elevator according to the third embodiment of the present invention, the torque command at the time of the inspection operation is detected as the suspension torque, so that the detection can be performed under the condition with less travel loss. Therefore, compared with the first embodiment, more accurate suspension torque can be detected, so that it is possible to improve the accuracy of the balance point between the car 8 and the C / W 9.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described. FIG. 9 is a diagram illustrating a configuration example of an elevator according to the fourth embodiment of the present invention.
As shown in FIG. 9, the elevator according to the fourth embodiment of the present invention further includes a speed switching device 18 as compared with the third embodiment. In this embodiment, a brake device 20 and a brake control device 21 for performing a mechanical braking operation of the motor 5 will also be described.

The car position detection device 17 detects car position information generated based on the pulse data output from the governor PG 16 and outputs the detection result to the speed switching device 18.
The operation mode switching device 19 is for a normal operation mode in which the operation mode of the car 8 is moved up and down according to the call registration in accordance with the operation of the operation unit (not shown) by the operator, and for detecting the suspension torque. Regardless of whether the call is registered or not, a device that sets one of the operation modes of the suspension torque detection mode, which is an operation mode in which the car 8 is moved up and down at the inspection speed in accordance with the manual operation of the operation controller of the car 8. is there. Similar to the third embodiment, the operation controller includes an ascending operation switch and a descending operation switch.

FIG. 10 is a flowchart illustrating an example of a processing operation for calculating a suspension torque related to balance adjustment by an elevator according to the fourth embodiment of the present invention.
In the fourth embodiment, instead of the processing from the steps S1 to S3 described in the first embodiment to the suspension torque detection, the NL state car 8 is moved to the intermediate position of the hoistway, A torque command value that is output when the brake is released in a state where a command of speed 0 [m / min] is being output is detected as a suspension torque.

  Next, details of the processing operation will be described. As an initial state, it is assumed that the car 8 is in the NL state, the car position is a position different from the intermediate position, and the operation mode is the normal operation mode. Here, the car position is assumed to be lower than the intermediate position.

  In this state, when the operation mode switching device 19 sets the operation mode to the suspension torque detection mode (YES in Step S21), a notification signal to that effect is sent to the speed command device 1, the speed switching device 18 and the brake control device 21. Output to.

  When the speed command device 1 receives the notification signal from the operation mode switching device 19 and the lift operation switch of the inspection operation controller of the car 8 is turned on by the operation of the worker, the car 8 in the NL state is turned on. A speed command is issued so as to go to an intermediate position between the top floor and the bottom floor (step S22).

  In this way, the car 8 is moved to the intermediate position so that the intermediate position is not affected by the weight of the rope applied to the detection of the suspension torque in order to detect the accurate suspension torque. This is because it is necessary to position the car 8.

  When the car position detected by the car position detecting device 17 reaches the intermediate position when the car 8 reaches the intermediate position, the speed switching device 18 displays the detection result that the car position is the intermediate position. It is obtained from the position detection device 17.

  In the state where the notification signal of the setting of the suspension torque detection mode from the operation mode switching device 19 is input to the speed switching device 18, a detection result that the car position is the intermediate position is obtained from the car position detecting device 17. In this case, a command signal for switching the speed of the car 8 to 0 is output to the speed command device 1 and the brake control device 21 regardless of the switching state of the inspection operation controller of the car 8.

  The speed command device 1 issues a speed command so that the speed of the car 8 becomes 0 when the command signal from the speed switching device 18 for switching the speed of the car 8 to 0 is input. Thereby, the speed of the car 8 is set to 0 (step S23).

  In addition, when the brake control device 21 inputs the notification signal for setting the suspension torque detection mode from the operation mode switching device 19, the brake control device 21 inputs a speed command signal from the speed switching device 18 at which the speed becomes zero. The brake device 20 is activated. As a result, the car 8 is stopped at the intermediate position.

  As another example, the brake control device 21 may receive a signal from the speed detection device 6 and operate the brake device 20 when the speed indicated by this signal becomes zero.

After this stop, the brake control device 21 releases the brake device 20 (step S24), and outputs a brake release notification signal to the suspension torque calculation device 12.
The suspension torque calculation device 12 receives the notification signal from the brake control device 21, and detects the torque command value detected by the torque command detection device 10 at this time as the suspension torque TmDif (step S25).
After this, the processing after step S4 described in the first embodiment is performed, and the required adjustment amount of the weight of C / W 9 is finally determined.

  As described above, in the elevator according to the fourth embodiment of the present invention, the torque command value in the stopped state, which is a state in which there is no travel loss, is detected as the suspension torque, so the first embodiment or the third embodiment. Compared with the form, a higher suspension torque can be detected, so that it is possible to improve the accuracy of the balance point between the car 8 and the C / W 9.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described. FIG. 11 is a diagram illustrating a configuration example of an elevator according to the fifth embodiment of the present invention.
As shown in FIG. 11, the fifth embodiment of the present invention further includes a display device 22 as compared with the first embodiment. The display device 22 is an output device for causing a worker to visually recognize the required adjustment amount of the weight of the C / W 9 calculated by the weight amount calculation device 14.

  The display device 22 outputs the required adjustment amount of the weight of C / W 9 as signed data. For example, if the required adjustment amount is a positive value, the weight amount to be loaded on C / W 9 is indicated. If the required adjustment amount is a negative value, the worker can recognize the weight amount to be lowered from C / W 9 and perform the loading operation.

  As described above, in the elevator according to the fifth embodiment of the present invention, the weight amount unloaded by the display device becomes clear, so that the operator can easily and accurately grasp the required adjustment amount of the weight of C / W9. The loading and unloading work can be performed accurately.

  The present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be omitted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

  DESCRIPTION OF SYMBOLS 1 ... Speed command device, 2 ... Speed control device, 3 ... Current control device, 4 ... Current detection device, 5 ... Motor, 6 ... Speed detection device, 7 ... Sheave, 8 ... Ride car, 9 ... Suspension weight (C / W), 10 ... torque command detection device, 11 ... average torque calculation device, 12 ... suspension torque calculation device, 13 ... load conversion device, 14 ... weight amount calculation device, 15 ... BL load setting device, 16 ... governor PG , 17 ... Car position detection device, 18 ... Speed switching device, 19 ... Operation mode switching device, 20 ... Brake device, 21 ... Brake control device, 22 ... Display device.

Claims (5)

A car that is wrapped around a sheave and connected to a counterweight via a rope.
A hoisting machine for rotating the sheave;
Speed command means for setting a command value of the traveling speed of the car;
Speed detecting means for detecting the rotational speed of the hoisting machine;
Torque command output means for outputting a torque command value signal for controlling the rotational speed of the hoisting machine based on a deviation between the speed command value set by the speed command means and the speed detection value detected by the speed detection means;
Current control means for controlling a supply current to the hoisting machine based on a torque command value indicated by a signal output by the torque command output means;
Torque command detection means for detecting a torque command value output by the torque command output means;
The average value of the torque command value detected by the torque command detecting means during the steady running of the ascending operation when the car is caused to perform the reciprocating operation in the no-load state is calculated, and the steady operation of the descending operation in the one reciprocating operation is calculated. Average torque calculation means for calculating an average value of torque command values detected by the torque command detection means during traveling;
A suspension torque calculation means for calculating a suspension torque by calculating an average value of the calculated value at the time of steady running in the ascending operation and the calculated value at the time of steady running in the descending operation by the average torque calculating means;
Load conversion means for converting the suspension torque calculated by the suspension torque calculation means into a load value;
An elevator comprising weight calculation means for calculating an adjustment value of the weight of the counterweight by calculating a difference between a load value converted by the load conversion means and a predetermined balance load load value. A car that is wrapped around a sheave and connected to a counterweight via a rope.
A hoisting machine for rotating the sheave;
Speed command means for setting a command value of the traveling speed of the car;
Speed detecting means for detecting the rotational speed of the hoisting machine;
Torque command output means for outputting a torque command value signal for controlling the rotational speed of the hoisting machine based on a deviation between a speed command value set by the speed command means and a speed detection value detected by the speed detection means;
Current control means for controlling a supply current to the hoisting machine based on a torque command value indicated by a signal output by the torque command output means;
Torque command detection means for detecting a torque command value output by the torque command output means;
Car position detecting means for detecting the position of the car in the hoistway;
When the position detected by the car position detecting means is within a predetermined range including an intermediate position between the uppermost floor and the lowermost floor of the hoistway, which is a range located for calculation of suspension torque. The travel speed command value set by the speed command means is switched to the first speed value, and the travel speed set by the speed command means when the position detected by the car position detection means is not within the predetermined range. Speed switching means for switching the command value to a second speed value faster than the first speed;
Average torque calculating means for calculating an average value of torque command values detected by the torque command detecting means during the ascending operation or descending operation of the car;
When the speed switching means switches the command value of the running speed set by the speed command means to the first speed value, the average torque calculation means calculates the calculated value during the ascending operation of the car; A suspension torque calculation means for calculating the suspension torque by calculating an average value with a calculated value during the descent operation of the car;
Load conversion means for converting the suspension torque calculated by the suspension torque calculation means into a load value;
An elevator comprising weight calculation means for calculating an adjustment value of the weight of the counterweight by calculating a difference between a load value converted by the load conversion means and a predetermined balance load load value. A car that is wrapped around a sheave and connected to a counterweight via a rope.
A hoisting machine for rotating the sheave;
Speed command means for setting a command value of the traveling speed of the car;
Speed detecting means for detecting the rotational speed of the hoisting machine;
Torque command output means for outputting a torque command value signal for controlling the rotational speed of the hoisting machine based on a deviation between the speed command value set by the speed command means and the speed detection value detected by the speed detection means;
Current control means for controlling a supply current to the hoisting machine based on a torque command value indicated by a signal output by the torque command output means;
Torque command detection means for detecting a torque command value output by the torque command output means;
The operation mode of the car is a normal operation mode in which the car is moved up and down according to call registration, and the car is operated at a lower rated speed than the rated speed in the normal operation mode regardless of the presence or absence of the call registration. An operation mode switching means for switching between inspection operation modes for manual lifting and lowering,
Car position detecting means for detecting the position of the car in the hoistway;
Torque detected by the torque command detection means when the position detected by the car position detection means is near the top floor when the operation mode of the car is switched to the inspection operation mode by the operation mode switching means. The suspension torque for calculating the suspension torque by calculating the average value of the command value and the torque command value detected by the torque command detection means when the position detected by the car position detection means is near the lowest floor Calculation means;
Load conversion means for converting the suspension torque calculated by the suspension torque calculation means into a load value;
An elevator comprising weight calculation means for calculating an adjustment value of the weight of the counterweight by calculating a difference between a load value converted by the load conversion means and a predetermined balance load load value. A car that is wrapped around a sheave and connected to a counterweight via a rope.
A hoisting machine for rotating the sheave;
Speed command means for setting a command value of the traveling speed of the car;
Speed detecting means for detecting the rotational speed of the hoisting machine;
Torque command output means for outputting a torque command value signal for controlling the rotational speed of the hoisting machine based on a deviation between the speed command value set by the speed command means and the speed detection value detected by the speed detection means;
Current control means for controlling a supply current to the hoisting machine based on a torque command value indicated by a signal output by the torque command output means;
Torque command detection means for detecting a torque command value output by the torque command output means;
Car position detecting means for detecting the position of the car in the hoistway;
A brake device for braking the hoist;
In order to detect the suspension torque, the command value of the running speed set by the speed command means is switched so that the position detected by the car position detection means is located at an intermediate position between the uppermost floor and the lowermost floor. When the position detected by the car position detecting means becomes the intermediate position by switching, a speed switching means for switching the running speed command value set by the speed command means to zero;
Brake control means for releasing the braking operation by the brake device when the command value set by the speed command means is zero by the speed switching means;
A suspension torque calculation means for calculating the suspension torque by detecting a torque command value detected by the torque command detection means when the braking operation by the brake device is released;
Load conversion means for converting the suspension torque calculated by the suspension torque calculation means into a load value;
An elevator comprising weight calculation means for calculating an adjustment value of the weight of the counterweight by calculating a difference between a load value converted by the load conversion means and a predetermined balance load load value.   The elevator according to any one of claims 1 to 4, further comprising display means for displaying a calculation result by the weight calculation means.

Images