JP5926924B2 - Interfloor adjustable double deck elevator and control method - Google Patents

Description

  The present invention relates to a floor-adjustable double-deck elevator in which two sub-cars are arranged in a main car frame that can move up and down, and the distance between the two sub-cars can be adjusted within the main car frame.

  In general, an adjustable floor double deck elevator has a main car frame on which two sub-cars are mounted and a counterweight connected by a rope, and the main car frame can be moved up and down in a desired direction by hoisting the rope with a hoisting machine. Move to position. In this type of inter-floor adjustable double deck elevator, the weight of the main car frame varies depending on the number of passengers in the two sub-cars, etc., resulting in an unbalance in weight between the main car frame and the counterweight. . For this reason, when moving the main car frame, the hoisting machine needs to perform torque control so as to compensate for an imbalance between the weights of the main car frame and the counterweight.

  In addition, in this type of adjustable double deck elevator, two sub-cages in the main car frame are connected to each other with a rope, and the distance between the sub-cages is adjusted by hoisting the rope with a hoisting machine. There is something. In such a floor-adjustable double-deck elevator, the weights of the two secondary cars are unbalanced depending on the number of passengers in each secondary car. Therefore, when moving the secondary car, the hoisting machine needs to perform torque control so as to compensate for the unbalance of the weights of the two secondary cars.

  However, in the above-described double-adjustable double deck elevator, the hoisting machine for the main car and the auxiliary car, unless the degree of unbalance is known in advance, until the rope is released and the hoisting is started. I do not know the required torque. Therefore, in both the main car and the sub car hoisting machines, a transient state occurs in which the weight imbalance is not reflected in the torque control at the moment of starting the hoisting. As a result, the main car frame or the sub car may vibrate or an impact may be applied.

  There is a technique disclosed in Patent Document 1 as a technique for reducing such vibration and impact of the sub-cage. The technique disclosed in Patent Document 1 is intended for a floor-adjustable double-deck elevator in which only one of two sub-cars is movable with respect to a main car frame. The weight of the movable secondary car is measured by a load detection device, and the driving force of the hydraulic cylinder that moves the secondary car is controlled according to the weight of the secondary car.

JP 2001-322771 A

  However, when the technique of Patent Document 1 described above is applied to a floor-adjustable double deck elevator in which two sub-cars move within the main car frame, each of the main car frame and the two sub-cars In order to provide the load detection device, a total of three load detection devices are required. Such a configuration increases the overall cost of the floor adjustable elevator.

  An object of the present invention is to provide a technique for reducing vibrations and impacts on a main car frame and a sub car of a floor adjustable double deck elevator at low cost.

  The floor adjustable double deck elevator according to one aspect of the present invention has a main car frame and a counterweight connected to each other and is suspended so as to be vertically movable, and two sub-cars are connected to each other within the main car frame to move up and down. In a floor-adjustable double-deck elevator suspended so as to be movable, any two loads of the main car frame and the two sub-cars are measured, and a predetermined calculation is performed on the two measured load values. Based on the calculation result, the weight balance between the main car frame and the counterweight and the weight imbalance between the two sub-cars are compensated.

  The floor adjustable double deck elevator according to the present invention is connected to one end of a main car main rope, and moves up and down by the main car main rope being rolled up, and the other of the main car main ropes. The main car main rope is connected to the end of the main car frame, and the main car hoisting machine that winds up the main car main rope is both the main car hoist and the counter car weight. Two sub-cars that are arranged in a car frame, are connected to both ends of the sub-car main rope, and move upside down by the roll-up of the sub-car main rope, and the sub-cage that winds up the sub-car main rope Predetermined to two load values measured by a car hoisting machine, two load detection devices that measure any two of the main car frame and the two sub-cages, and the two load detection devices Based on the calculation result A control unit for setting a hoisting starting torque of the main car hoisting machine and said auxiliary cage hoisting machine, may have a.

  In the floor adjustable double deck elevator according to the present invention, the two load detection devices measure the respective loads of the two auxiliary cars, and the control unit is based on the sum of the loads of the two auxiliary cars. Thus, the torque at the start of winding by the main car hoisting machine may be set, and the torque at the start of winding by the sub car hoisting machine may be set based on the difference between the loads of the two sub car hoists.

  In the floor adjustable double deck elevator according to the present invention, the control unit is measured by the two load detection devices in a state where both the main car hoisting machine and the sub car hoisting machine are stopped. After obtaining the load value, the main car hoisting machine may start winding.

  In the floor-adjustable double-deck elevator according to the present invention, the counterweight is a weight that balances with the main car frame in a state where a load of half the rated load is loaded on the two sub-cars, and the control The unit obtains the load value of each sub-cage as a ratio of the load to the rated load, and multiplies the sum of the two load values by 2 to multiply the rated load and compares it with the weight of the counterweight. You may decide to do it.

  Further, in the inter-floor adjustable double deck elevator according to the present invention, the control unit is set in the main car hoisting machine with respect to a first unbalance amount representing a degree of unbalance between the main car frame and the counterweight. First set torque information indicating a torque value and a second set torque indicating a torque value to be set in the auxiliary car hoisting machine with respect to a second unbalance amount indicating the degree of unbalance between the two auxiliary cars. Information is stored in advance, the first unbalance amount and the second unbalance amount are calculated based on the two load values, and the calculated first unbalance amount and the first set torque are calculated. And determining the torque value to be set in the main car hoisting machine based on the information, and on the basis of the calculated second unbalance amount and the second set torque information, the sub car hoisting machine. To set to It may be to determine the value.

  ADVANTAGE OF THE INVENTION According to this invention, the technique which reduces the vibration and impact to the main car frame and subcar of a floor adjustment type double deck elevator at low cost can be provided.

It is a schematic block diagram of the floor adjustment type double deck elevator by this embodiment. It is a schematic block diagram of the whole floor height adjustment type double deck elevator DD by a present Example. It is a schematic block diagram of the control part which performs unbalance compensation in a present Example. It is a figure for demonstrating the operation example of unbalance compensation control.

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

  FIG. 1 is a schematic configuration diagram of a floor adjustable double deck elevator according to the present embodiment.

  Referring to FIG. 1, the adjustable floor double deck elevator DD includes a main car frame 8, a counterweight 17, a main car hoisting machine 2, auxiliary car 101, 102, an auxiliary car hoisting machine 5, a load detecting device 161, 162 and a control unit CC.

  In the floor adjustable double deck elevator DD of the present embodiment, the main car frame 8 and the counterweight 17 are connected by the main car main rope 3 and are suspended so as to be vertically movable. In the main car frame 8, two sub-cars 101 and 102 are connected to each other by the sub-car main rope 6 and suspended so as to be vertically movable. The floor-adjustable double-deck elevator DD measures the load of any two of the main car frame 8 and the two sub-cars 101 and 102, and performs a predetermined calculation on the two measured load values. Further, the floor-adjustable double deck elevator DD compensates for the weight imbalance between the main car frame 8 and the counterweight 17 and the weight imbalance between the two sub-cars 101 and 102 based on the calculation result. .

  Hereinafter, each part will be described.

  The main car frame 8 is connected to one end of the main car main rope 3, and moves up and down when the main car main rope 3 is rolled up.

  The counterweight 17 is connected to the other end of the main car main rope 3 and moves upside down with respect to the main car frame 8 when the main car main rope 3 is rolled up.

  The main car hoisting machine 13 winds up the main car main rope 3 by a desired amount in a desired direction in order to move the main car frame 8 to a desired position.

  The two sub-cars 101 and 102 are both arranged in the main car frame 8, and are connected to both ends of the sub-car main rope 6, respectively, and move upside down by the winding up of the sub-car main rope 6. .

  The secondary car hoisting machine 5 winds up the secondary car main rope 6 by a desired amount in a desired direction so that the distance between the secondary car 101 and the secondary car 102 becomes a desired distance.

  The two load detection devices 161 and 162 measure any two loads of the main car frame 8 and the two sub cars 101 and 102. For example, the two load detectors 161 and 162 may measure the loads of the two auxiliary cars 101 and 102, respectively. Alternatively, one load detector 161 may measure the load on the main car frame 8 and the other load measuring device 162 may measure the load on one sub-car 101.

  The control unit CC performs a predetermined calculation on the two load values measured by the two load detection devices 161 and 162, and starts winding of the main car hoisting machine 13 and the sub car hoisting machine 5 based on the calculation result. Set the hour torque. For example, when the two load detectors 161 and 162 measure the loads of the two auxiliary cars 101 and 102, respectively, the control unit CC determines the torque of the main car hoisting machine 13 based on the sum of the loads. Should be set. In that case, the control unit CC may set the torque of the auxiliary car hoisting machine 5 based on the difference between the loads.

  According to the present embodiment, the control of the main car frame 8 and the two sub cars 101 and 102 is adjusted based on the load values measured by the two load detectors 161 and 162, so that the floor adjustable double deck elevator is used. It is possible to reduce vibrations and impacts on the DD main car frame 8 and the sub-cars 101 and 102 at low cost.

  In the example of FIG. 1, the load detection device 161 measures the load of the sub-car 101 and the load detection device 162 measures the load of the sub-car 102. In that case, the control unit CC sets the torque at the start of winding by the main car hoisting machine 13 based on the sum of the loads of the two sub-cars 101 and 102, and sets the difference between the loads of the two sub-cars 101 and 102. Based on this, the torque at the start of winding by the auxiliary car hoisting machine 5 may be set.

  As another example, the load on the main car frame 8 may be measured with one load detection device, and the load on one of the sub-cars may be measured with the other load detection device. In that case, the control unit CC sets the hoisting torque of the main car frame 8 based on the measured load value of the main car frame 8, and subtracts twice the load value of the sub car from the measured load value of the main car frame 8. Based on the subtracted load value, the hoisting torque of the two sub-cars 101 and 102 may be set.

  In the present embodiment, the control unit CC obtains the load values measured by the two load detection devices 161 and 162 in a state where both the main car hoisting machine 2 and the sub car hoisting machine 5 are stopped. After that, the main car hoisting machine 2 may start winding.

  In general, a floor to be stopped may be designated by pressing a button in a sub-car or on each floor while the elevator is moving up and down. Winding of the main car hoisting machine 2 is performed before the stop floor is determined, but the winding of the sub car hoisting machine 5 is not started until the stop floor is determined. Even in such a case, as described above, accurate torque control can be performed by measuring the load of the auxiliary car 101 and 102 in a state where both the main car hoisting machine 2 and the auxiliary car hoisting machine 5 are stopped. Is possible.

  Further, the counterweight 17 may have a weight that balances with the main car frame 8 in a state in which a load half the rated load is loaded on the two sub-cars 101 and 102. Then, the control unit CC obtains the load value of each of the sub-cars 101 and 102 as a ratio of the load to the rated load amount, and multiplies the sum of the two load values by 2 by the rated load amount to obtain a balance. It may be compared with the weight of the weight 17.

  The controller CC also sets first torque information indicating the value of torque set in the main car hoist 2 with respect to the first unbalance amount indicating the degree of unbalance between the main car frame 8 and the counterweight 17. And second set torque information indicating the value of the torque set in the sub-cage hoisting machine 5 with respect to the second unbalance amount indicating the degree of unbalance between the two sub-cars 101 and 102 is held in advance. The following procedure may be executed.

  First, a first unbalance amount and a second unbalance amount are calculated based on two load values. Subsequently, based on the calculated first unbalance amount and the first set torque information, a torque value to be set in the main car hoisting machine 2 is determined. Further, based on the calculated second unbalance amount and the second set torque information, a torque value to be set in the auxiliary car hoisting machine 5 is determined.

  The controller CC also calculates a torque value to be set for the main car hoist 2 from a first unbalance amount that represents the degree of unbalance between the main car frame 8 and the counterweight 17. A torque equation and a second set torque equation for calculating a torque value to be set in the sub-cage hoisting machine 5 from a second unbalance amount representing the degree of unbalance between the two sub-cables 101 and 102 are held in advance. In addition, the following procedure may be executed.

  First, a first unbalance amount and a second unbalance amount are calculated based on two load values. Then, the value of the torque set to the main car hoist 2 is calculated using the calculated first unbalance amount and the first set torque equation. Moreover, the value of the torque set to the auxiliary car hoisting machine 5 is calculated using the calculated second unbalance amount and the second set torque equation.

  Hereinafter, more specific examples will be described.

  FIG. 2 is a schematic configuration diagram of the entire floor height adjustable double deck elevator DD according to the present embodiment. FIG. 3 is a schematic configuration diagram of a control unit that performs unbalance compensation in the present embodiment. FIG. 4 is a diagram for explaining an operation example of unbalance compensation control.

  In FIG. 2, the main car frame 8 of the floor height adjustable double deck elevator DD is driven by the main car hoisting machine 2 hoisting the main car main rope 3 based on a command from the elevator control device 1.

  Two sub-cars 101 and 102 are mounted in the main car frame 8. The sub car 101 has a structure in which a car room 121 is accommodated in a sub car frame 111. The sub car 102 has a structure in which a car room 122 is accommodated in a sub car frame 112.

  The sub car frames 111 and 112 are connected to the sub car frame position adjustment control device 4 by connecting the sub car frames 111 and 112 connected by the sub car main rope 6 in the same manner as driving a car frame of a general rope type elevator. The auxiliary car hoisting machine 5 is used for driving.

  The sub-car frames 111 and 112 are movable up and down along the inner rail 10 provided along the vertical frame of the main car frame 8. When the secondary car hoisting machine 5 rotates by a predetermined rotation angle and winds up the secondary car main rope 6, the secondary car frames 111 and 112 move up and down accordingly. As a result, the distance between the two-tiered car rooms 121 and 122 is the height of the two service floors adjacent to the upper and lower sides of the elevator (that is, the difference in the height of the floor where passengers get on and off the two sub-cars 101 and 102). Adjusted accordingly.

  In this embodiment, the load in the cabs 121 and 122 is measured by any one of the load detection devices 141 and 142 and the load detection devices 161 and 162. In FIG. 2, both the load detection devices 141 and 142 and the load detection devices 161 and 162 are illustrated for convenience of explanation.

  The load detection devices 141 and 142 are devices that are installed in the vicinity of the end portions 131 and 132 of the sub car main rope 6 and measure the extension amount of the sub car main rope 6. Since the extension amount of the sub-cage main rope 6 changes depending on the load of the sub-cars 101 and 102, the load of the sub-cars 101 and 102 can be calculated from the measured extension amount.

  The load detection devices 161 and 162 are installed under the sub-car frames 111 and 112. The load detection devices 161 and 162 have elastic members such as rubber materials, and the elastic members support the sub-cage frames 111 and 112. The elastic member is crushed and deformed by a deformation amount corresponding to the load of the sub-cars 101 and 102. The load detection devices 161 and 162 measure the deformation amount, and calculate the load from the measured deformation amount.

  The floor-adjustable double-deck elevator DD calculates the unbalance amount between the main car frame 8 and the counterweight 17 when the elevator is started based on the measured load values of the sub-cars 101 and 102, and the main car hoist 2 A predetermined torque command is output to the vehicle to compensate for the imbalance, and the amount of unbalance when the cabs 121 and 122 are activated is calculated, and when the adjustment of the distance between the sub cab frames 111 and 112 is activated, the secondary car is wound. A predetermined torque command is output to the machine 5 to compensate for imbalance.

  Here, the control procedure of the present embodiment will be described with reference to FIG. The elevator control device 1 and the sub-car frame position adjustment control device 4 in FIG. 3 correspond to the control unit CC in FIG. Here, it is assumed that the loads loaded in the respective car chambers 121 and 122 of the sub-cars 101 and 102 are measured using the load detection devices 161 and 162.

  First, the load loads in the car rooms 121 and 122 are detected by the load detectors 161 and 162 installed under the sub-car frames 111 and 112, respectively. The elevator control device 1 determines the torque of the main car hoist 2 so as to compensate the unbalance amount between the value obtained by taking the sum of the two load values detected here and dividing by 2 and the counterweight 17, When the elevator starts, a control command for the torque value is applied from the main car hoisting machine torque control circuit 18 to the main car hoisting machine 2. On the other hand, since the difference between the detected two load values is the unbalance amount between the sub-cars 101 and 102, the sub-cage frame position adjustment control device 4 has a torque of the sub-car hoisting machine 5 so as to compensate for the unbalance amount. The auxiliary car hoisting machine torque control circuit 19 applies a control command for the torque value to the auxiliary car hoisting machine 5 when starting the adjustment of the position between the auxiliary car frames.

  Next, as a specific operation example, the procedure of unbalance compensation control will be described using the example shown in FIG. Here, the load value is expressed as a percentage of the rated load capacity. In the example of FIG. 4, it is assumed that 50% of the passengers with the rated load capacity are placed in the car room 121 and 100% of the passengers with the rated load capacity are in the car room 122.

  The control of the main car frame 8 will be described.

  It is detected by the load detection devices 161 and 162 installed under the sub-car frames 111 and 112 that a 50% load is loaded in the car room 121 and a 100% load is loaded in the car room 122. .

  These detected load values are taken into the elevator control device 1, and the main car load amount indicating the load loaded on the main car frame 8 is determined by the calculation of the equation (1).

Load capacity of main car = (load value of car room 121 + load value of car room 122) / 2 (1)
= (50% + 100%) / 2
= 75%

  Here, since 50% of the rated load capacity passengers are placed in the car room 121 and 100% of the rated load capacity passengers are placed in the car room 122, the load capacity of the main car frame 8 is 75 as calculated above. %.

  Next, the unbalance amount between the main car frame 8 and the counterweight 17 is calculated by the equation (2).

  Unbalance amount = main car load amount-counterweight weight (2)

  As described above, here, the main car load is 75% of the rated load.

  The elevator control device 1 performs a torque command calculation 20 that calculates a torque amount that compensates the unbalance amount obtained from the equation (2), and based on the calculation result, the main car hoisting machine torque control circuit 18 A torque that compensates for the unbalance amount is applied to the hoisting machine 2 when the elevator is started.

  Next, control of the car rooms 121 and 122 will be described.

  As described above, a load of 50% of the rated load is applied to the car room 121 by the load detection devices 161 and 162 installed under the sub-car frames 111 and 112, and 100% of the rated load is applied to the car room 122. It is detected that a load is applied.

  These load values are taken into the sub-car frame position adjustment control device 4. In the auxiliary car frame position adjustment control device 4, the auxiliary car hoisting machine torque control circuit 19 calculates the unbalance amount of the loads in the car rooms 121 and 122 by the calculation of the equation (3).

Unbalance amount = load value of the car room 121−load value of the car room 122 (3)
= 50% -100%
= -50%

  Here, since 50% of the rated load is applied to the cab 121 and 100% of the rated load is applied to the cab 122, the unbalance amount is −50% from the equation (3). .

  The sub-car frame position adjustment control device 4 performs a torque command calculation 20 for calculating a torque amount to compensate for the unbalance amount, and from the sub-car hoisting machine torque control circuit 19 based on the calculation result, A torque that compensates for −50% of the rated load capacity, which is an unbalance amount, is applied to the machine 5 at the time of starting the adjustment of the position between the sub car frames.

  According to the present embodiment described above, the load loaded in each of the car chambers 121 and 122 is detected, and a predetermined calculation is performed on the result to compensate for the unbalance amount between the main car frame 8 and the counterweight 17. The amount of unbalance in the car rooms 121 and 122 can be compensated. With only two load detection devices 161 and 162 that measure the loads of the two sub-cars 101 and 102, it is possible to suppress a shock at the time of starting both the main car frame 8 and the sub-cars 101 and 102.

  The above-described embodiments and examples of the present invention are examples for explaining the present invention, and are not intended to limit the scope of the present invention only to those embodiments or examples. Those skilled in the art can implement the present invention in various other modes without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Elevator control apparatus, 10 ... Rail in frame, 111 ... Sub cage frame, 121 ... Car room, 122 ... Car room, 13 ... Main car hoisting machine, 131 ... End part, 132 ... End part, 141 ... Load detection Device: 142 ... Load detection device, 161 ... Load detection device, 162 ... Load detection device, 17 ... Counterweight, 18 ... Main car hoisting machine torque control circuit, 19 ... Sub car hoisting machine torque control circuit, 2 ... Main Car hoisting machine, 3 ... Main car main rope, 4 ... Sub-car frame position adjustment control device, 5 ... Sub car hoisting machine, 6 ... Sub car main rope, 8 ... Main car frame

Claims (2)

In a floor-adjustable double deck elevator in which a main car frame and a counterweight are connected and suspended so as to be movable up and down, and two sub-cars are connected together in the main car frame and are suspended so as to be movable up and down ,
A first unbalance amount representing a degree of unbalance between the weights of the main car frame and the counterweight, based on the measured two load values; Calculating a second unbalance amount representing a degree of unbalance of the weight of the sub-cage, compensating the weight unbalance of the main cage frame and the counterweight based on the first unbalance amount, A floor adjustable double deck elevator that compensates for an unbalance of the weights of the two sub-cars based on a second unbalance amount ;
The main car hoisting machine is wound before the stop floor is confirmed, and the secondary car hoisting machine is wound after the stop floor is confirmed,
After obtaining the load values of the two sub-cars measured in a state where both the main car hoisting machine and the sub car hoisting machine are stopped, the main car hoisting machine is caused to start winding,
Floor adjustable double deck elevator. A floor-adjustable double-deck elevator in which a main car frame and a counterweight are connected and suspended so as to be movable up and down, and two sub-cars are connected together in the main car frame and are suspended so as to be movable up and down. A control method,
A first step of measuring the load of the two sub-cages ;
Based on the two measured load values, the first unbalance amount representing the degree of unbalance between the weights of the main car frame and the counterweight, and the degree of unbalance between the weights of the two sub-cars A second step of calculating a second unbalance amount;
Based on the first unbalance amount, an unbalance between the weights of the main car frame and the counterweight is compensated, and based on the second unbalance amount, an unbalance between the weights of the two sub cages is compensated. and a third step, the possess,
The main car hoisting machine is wound before the stop floor is confirmed, and the secondary car hoisting machine is wound after the stop floor is confirmed,
After obtaining the load values of the two sub-cars measured in a state where both the main car hoisting machine and the sub car hoisting machine are stopped, the main car hoisting machine is caused to start winding,
Control method of the adjustable double deck elevator between floors.

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