CN114761344B - Elevator device - Google Patents
Elevator device Download PDFInfo
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- CN114761344B CN114761344B CN201980102353.3A CN201980102353A CN114761344B CN 114761344 B CN114761344 B CN 114761344B CN 201980102353 A CN201980102353 A CN 201980102353A CN 114761344 B CN114761344 B CN 114761344B
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- machine room
- suspension body
- control device
- elevator apparatus
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- 239000000725 suspension Substances 0.000 claims abstract description 171
- 238000004804 winding Methods 0.000 claims abstract description 37
- 230000007246 mechanism Effects 0.000 claims description 26
- 238000001514 detection method Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 14
- 238000010586 diagram Methods 0.000 description 40
- 230000004048 modification Effects 0.000 description 22
- 238000012986 modification Methods 0.000 description 22
- 230000006870 function Effects 0.000 description 14
- 238000010276 construction Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B19/00—Mining-hoist operation
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- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
- Elevator Control (AREA)
Abstract
In an elevator apparatus, a machine room can be moved in an upward direction in a hoistway. And a traction machine is arranged in the machine room. The 1 st lifting body is suspended in the hoistway by the suspending body. The 2 nd lifting body is suspended in the hoistway by the suspending body on the opposite side of the drive sheave from the 1 st lifting body. The winding device winds the suspension body. The control device controls the hoisting machine when the machine room moves upward, and thereby the suspension body is sent out from the winding device to the hoistway.
Description
Technical Field
The present invention relates to an elevator apparatus having a machine room, which can be moved upward in a hoistway.
Background
In the conventional construction elevator, a machine room is lifted up stepwise with the progress of construction of a building. In the case where the machine room is to be lifted, either one of the car and the counterweight is suspended from the machine room before the machine room is lifted. The other of the car and the counterweight is fixed to the building. Then, the suspension body wound around the winding device is released into the hoistway. After that, the machine room is lifted until the slack of the suspension body is removed (for example, refer to patent document 1).
Prior art literature
Patent literature
Patent document 1: japanese patent publication No. 59-34633
Disclosure of Invention
Problems to be solved by the invention
In the conventional construction elevator as described above, the machine room is lifted after the suspension body is released. Therefore, the use stop period of the elevator for construction is prolonged, and the construction period of the building is prolonged.
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevator apparatus capable of shortening a utilization stop period caused by upward movement of a machine room.
Means for solving the problems
An elevator device of the present invention includes: a machine room that can be moved upward in a hoistway; a traction machine which is provided with a driving rope wheel and is arranged in a machine room; a suspension body wound around the drive sheave; a 1 st lifting body suspended in the hoistway or supported in the hoistway; a 2 nd elevator body suspended in the hoistway or supported in the hoistway on a side opposite to the 1 st elevator body with respect to the drive sheave; a winding device that winds the suspension body; and a control device that controls the hoisting machine, wherein the control device controls the hoisting machine when the machine room moves upward, thereby feeding the suspension body from the winding device to the hoistway.
Effects of the invention
According to the elevator apparatus of the present invention, the utilization stop period caused by the upward movement of the machine room can be shortened.
Drawings
Fig. 1 is a block diagram showing an elevator apparatus according to embodiment 1.
Fig. 2 is a block diagram showing a main part of the elevator apparatus of fig. 1.
Fig. 3 is a flowchart showing the operation of the control device when the machine room in fig. 1 moves upward.
Fig. 4 is a block diagram showing a modification of the elevator apparatus according to embodiment 1.
Fig. 5 is a block diagram showing a main part of the elevator apparatus according to embodiment 2.
Fig. 6 is a flowchart showing the operation of the control device of fig. 5 when the machine room moves upward.
Fig. 7 is a block diagram showing an elevator apparatus according to embodiment 3.
Fig. 8 is a block diagram showing a main part of the elevator apparatus of fig. 7.
Fig. 9 is a block diagram showing a hoisting machine of an elevator apparatus according to embodiment 4.
Fig. 10 is a block diagram showing a hoisting machine of an elevator apparatus according to embodiment 5.
Fig. 11 is a configuration diagram showing an elevator apparatus according to embodiment 6.
Fig. 12 is a block diagram showing a main part of the elevator apparatus of fig. 11.
Fig. 13 is a configuration diagram showing a modification of the elevator apparatus according to embodiment 6.
Fig. 14 is a block diagram showing an elevator apparatus according to embodiment 7.
Fig. 15 is a configuration diagram showing a modification of the elevator apparatus according to embodiment 7.
Fig. 16 is a block diagram showing an elevator apparatus according to embodiment 8.
Fig. 17 is a block diagram showing a main part of the elevator apparatus of fig. 16.
Fig. 18 is a block diagram showing a modification 1 of the elevator apparatus according to embodiment 8.
Fig. 19 is a block diagram showing modification 2 of the elevator apparatus according to embodiment 8.
Fig. 20 is a block diagram showing modification 3 of the elevator apparatus according to embodiment 8.
Fig. 21 is a block diagram showing example 1 of a processing circuit for realizing the functions of the control devices according to embodiments 1 to 8.
Fig. 22 is a block diagram showing an example 2 of a processing circuit for realizing the functions of the control devices according to embodiments 1 to 8.
Detailed Description
Hereinafter, embodiments will be described with reference to the drawings.
Embodiment 1
Fig. 1 is a block diagram showing an elevator apparatus according to embodiment 1. In the figure, a hoistway 2 is provided in a building 1 being constructed. A crane device (crane) 3 as a machine room hoisting device is provided at an upper portion of the building 1. The crane device 3 has a crane main body 4 and a crane rope 5.
The elevator apparatus 10 includes a machine room 11, a hoisting machine 12, a suspension body 13, a car 14, a counterweight 15, a winding device 16, and a control device 17.
The machine room 11 is connected to the lower end of the crane rope 5, and suspended in the hoistway 2. The machine room 11 can be moved up and down in the hoistway 2 by the crane device 3. The machine room 11 is lifted up stepwise as the construction of the building 1 progresses.
The hoisting machine 12 is provided in the machine room 11. The hoisting machine 12 includes a drive sheave 18, a hoisting machine motor, not shown, and a pair of hoisting machine brakes 19. The machine motor rotates the drive sheave 18. A pair of hoisting machine brakes 19 maintain the stationary state of the drive sheave 18. Further, the pair of hoisting machine brakes 19 brake the rotation of the drive sheave 18.
The suspension body 13 is wound around the drive sheave 18. As the hanging body 13, a plurality of ropes or a plurality of straps are used.
The suspension body 13 has a 1 st end 13a and a 2 nd end 13b, which are not shown in fig. 1. The 1 st end 13a is an end of the suspension body 13 in the longitudinal direction, and is located in the winding device 16. The 2 nd end 13b is the other end of the hanger 13 in the longitudinal direction, and is connected to the machine room 11.
The car 14 and the counterweight 15 are located below the machine room 11. The car 14 has a car body 20 and rotatable car hanging wheels 21. The counterweight 15 includes a counterweight main body 22 and a rotatable counterweight hanging sheave 23.
The suspension body 13 is wound around the car sheave 21, the drive sheave 18, and the counterweight sheave 23 in this order from the winding device 16 side to the 2 nd end portion 13b. The roping method of the elevator apparatus 10 is 2:1 a rope winding mode.
The car 14 is suspended in the hoistway 2 by means of the suspension body 13. The counterweight 15 is suspended in the hoistway 2 by the suspension body 13 on the opposite side of the car 14 from the drive sheave 18.
During normal operation of the car 14, the driving sheave 18 is rotated to raise and lower the car 14 and the counterweight 15 in the hoistway 2. That is, the elevator apparatus 10 is a traction elevator. Here, fig. 1 shows a state when the machine room 11 moves upward, not in the normal operation of the car 14.
A pair of car guide rails, not shown, and a pair of counterweight guide rails, not shown, are provided in the hoistway 2. A pair of car guide rails guides the lifting and lowering of the car 14. The pair of counterweight guide rails guide the lifting and lowering of the counterweight 15.
The winding device 16 is provided in the machine room 11. A part of the suspension body 13 is wound around the winding device 16.
The control device 17 controls the hoisting machine 12. During normal operation of the car 14, the control device 17 controls the operation of the car 14 by controlling the hoisting machine 12.
When the machine room 11 moves upward, the car 14 is suspended from the machine room 11 by a winch (winch) 6 as a lifter. The 1 st lifting body in the elevator apparatus 10 of fig. 1 is a car 14.
When the machine room 11 moves upward, a support table 7 is provided in the hoistway 2, and the counterweight 15 is supported by the support table 7. The 2 nd lifting body in the elevator apparatus 10 of fig. 1 is a counterweight 15.
When the machine room 11 moves upward, the control device 17 controls the hoisting machine 12 to rotate the drive sheave 18. At this time, the drive sheave 18 rotates clockwise in fig. 1, and the suspension body 13 is supplied to the counterweight 15 side with respect to the drive sheave 18. The suspension 13 is pulled out from the winding device 16 into the hoistway 2 by a length corresponding to the movement amount of the machine room 11.
A pull-out preventing mechanism, not shown, is provided in the winding device 16 or the machine room 11. The pull-out preventing mechanism prevents the suspension body 13 from being pulled out from the winding device 16 during normal operation of the car 14.
When the machine room 11 moves upward, the pull-out preventing mechanism is released. In a state where the pull-out preventing mechanism is released, the holding force of the winding device 16 on the suspension body 13 is smaller than the traction force between the drive sheave 18 and the suspension body 13.
Fig. 2 is a block diagram showing a main part of the elevator apparatus 10 of fig. 1. As functional blocks, the control device 17 includes a drive control unit 17a, a torque detection unit 17b, and a notification unit 17c.
The drive control unit 17a controls the driving of the hoisting machine motor and the operation of the hoisting machine brake 19. The torque detection unit 17b detects a torque load applied to the drive sheave 18 from a signal from the hoisting machine 12.
When the machine room 11 moves upward, the drive control unit 17a controls the hoisting machine 12 so that the torque load of the hoisting machine 12 falls within a set range based on a signal from the torque detection unit 17 b. Thus, when the machine room 11 moves upward, the drive control unit 17a controls the hoisting machine 12 so that the tension of the suspension body 13 falls within a set range.
The drive control unit 17a sets a 1 st set value Ts1 of the torque load, a 2 nd set value Ts2 of the torque load, a lower limit value Tmin of the torque load, and an upper limit value Tmax of the torque load.
The 1 st set value Ts1 is a value greater than the lower limit value Tmin and less than the 2 nd set value Ts 2. The 2 nd set value Ts2 is a value smaller than the upper limit value Tmax. That is, the relation of Tmin < Ts1 < Ts2 < Tmax holds.
The 1 st set value Ts1 is a value corresponding to the lowest value of the tension setting range of the suspension body 13. The 2 nd set value Ts2 is a value corresponding to the highest value of the tension setting range of the suspension body 13. The lower limit value Tmin is a value corresponding to the lower limit value of the tension of the suspension body 13. The upper limit value Tmax is a value corresponding to the tension upper limit value of the suspension body 13.
When the detected value Td of the torque load is smaller than the 1 st set value Ts1 when the machine room 11 moves upward, the drive control unit 17a decreases the rotational speed of the drive sheave 18. Thereby, the feeding speed of the suspension body 13 into the hoistway 2 becomes low.
When the detected value Td of the torque load is greater than the 2 nd set value Ts2 when the machine room 11 moves upward, the drive control unit 17a increases the rotational speed of the drive sheave 18. This increases the feeding speed of the suspension body 13 into the hoistway 2.
When the detected value Td of the torque load is smaller than the lower limit value Tmin when the machine room 11 moves upward, the drive control unit 17a stops the rotation of the drive sheave 18. Thereby, the delivery of the suspension 13 into the hoistway 2 is stopped.
When the detected value Td of the torque load at the time of upward movement of the machine room 11 is greater than the upper limit value Tmax, the notification unit 17c outputs a job suspension instruction for suspending the movement of the machine room 11 to the outside.
The work suspension command is a command to directly stop the crane device 3. Further, the work suspension command may be a command for transmitting to the operator that the movement of the machine room 11 should be suspended, as long as the operator can immediately stop the crane device 3.
When the job suspension command is output from the notification unit 17c, the drive control unit 17a stops the rotation of the drive sheave 18.
Fig. 3 is a flowchart showing the operation of the control device 17 when the machine room 11 in fig. 1 moves upward. When the operation of raising the machine room 11 is started, the control device 17 rotates the drive sheave 18 at a predetermined speed in step S101.
Next, the control device 17 determines in step S102 whether or not the detected value Td of the torque load is equal to or smaller than the upper limit value Tmax.
If the detection value Td is equal to or lower than the upper limit value Tmax, the control device 17 determines in step S103 whether or not the detection value Td of the torque load is equal to or higher than the lower limit value Tmin.
If the detection value Td is equal to or greater than the lower limit value Tmin, the control device 17 determines in step S104 whether or not the detection value Td of the torque load is equal to or greater than a 1 st set value Ts1 and equal to or less than a 2 nd set value Ts 2.
When the detected value Td is equal to or greater than the 1 st set value Ts1 and equal to or less than the 2 nd set value Ts2, the control device 17 determines that the tension of the suspension body 13 is within the set range, and determines whether or not to end the movement operation of the machine room 11 in step S105. Whether or not to end the moving job is determined by the presence or absence of a job end signal input to the control device 17.
In the case where the detection value Td is smaller than the 1 st set value Ts1 and in the case where the detection value Td is larger than the 2 nd set value Ts2, the control device 17 corrects the speed of the drive sheave 18 in step S106.
When the detected value Td is smaller than the 1 st set value Ts1, the control device 17 decreases the speed of the drive sheave 18 by a preset speed. When the detected value Td is greater than the 2 nd set value Ts2, the control device 17 increases the speed of the drive sheave 18 by a preset speed.
When it is determined in step S105 that the job is not to be ended, the control device 17 repeatedly executes the processing from step S102 to step S106.
When the detection value Td is smaller than the lower limit value Tmin in step S103, the control device 17 stops the rotation of the drive sheave 18 in step S107. After that, the control device 17 determines in step S105 whether or not to end the movement operation of the machine room 11.
When the upward movement of the machine room 11 is continued while the rotation of the drive sheave 18 is stopped, the torque load increases. When the detected value Td of the torque load becomes equal to or greater than the lower limit value Tmin, the control device 17 corrects the rotation speed of the drive sheave 18 in step S106.
When it is determined in step S105 that the movement operation of the machine room 11 is completed, the control device 17 stops the rotation of the drive sheave 18 in step S108, and ends the process of fig. 3.
When it is determined in step S102 that the detected value Td of the torque load is greater than the upper limit value Tmax, the control device 17 outputs a work suspension command to the outside in step S109, stops the rotation of the drive sheave 18, and ends the process of fig. 3.
In such an elevator apparatus 10, the machine room 11 can be moved upward by the crane apparatus 3. Accordingly, the elevator apparatus 10 can be installed in the building 1 from the initial stage of the construction of the building 1, and the machine room 11 can be lifted stepwise according to the height of the building 1, thereby improving the lift stroke of the elevator.
When the machine room 11 moves upward, the hoisting machine 12 is controlled by the control device 17, and the suspension body 13 is sent out into the hoistway 2. Therefore, the use stop period of the elevator apparatus 10 due to the upward movement of the machine room 11 can be shortened. This shortens the construction period of the building 1, and enables the construction to be completed as early as possible.
When the machine room 11 moves upward, the control device 17 controls the hoisting machine 12 such that the tension of the suspension body 13 falls within a set range according to the torque load of the hoisting machine 12. Accordingly, the hanging body 13 can be automatically fed into the hoistway 2 by an appropriate amount in accordance with the moving speed of the machine room 11. That is, the work of feeding out the hanging body 13 can be automated.
This suppresses excessive feeding of the suspension body 13 into the hoistway 2, and can prevent the occurrence of an excessive rewinding operation of the suspension body 13. Further, the tension of the suspension body 13 is prevented from becoming excessive due to the delay in the delivery of the suspension body 13 into the hoistway 2, and the load on the crane apparatus 3 can be prevented from becoming excessive.
Fig. 4 is a block diagram showing a modification of the elevator apparatus 10 according to embodiment 1. In this modification, when the machine room 11 moves upward, the car 14 is supported by the support table 7. The 2 nd elevator in the elevator apparatus 10 of fig. 4 is the car 14.
Further, when the machine room 11 moves in the upward direction, the counterweight 15 is suspended from the machine room 11 by the winch 6. The 1 st lifting body in the elevator apparatus 10 of fig. 4 is a counterweight 15.
The 2 nd end 13b of the suspension body 13 is located in the winding device 16. The suspension body 13 is wound around the car sheave 21, the drive sheave 18, and the counterweight sheave 23 in this order from the 1 st end portion 13a side to the winding device 16.
When the machine room 11 moves upward, the drive sheave 18 rotates counterclockwise in fig. 4, and the suspension body 13 is supplied to the car 14 side with respect to the drive sheave 18. Other configurations and control methods are the same as those of the examples shown in fig. 1 to 3.
In this way, even in a structure in which the counterweight 15 is suspended from the machine room 11 and the car 14 is supported by the support table 7, the same effects as those of the examples shown in fig. 1 to 3 can be obtained.
Embodiment 2
Next, fig. 5 is a block diagram showing a main part of elevator apparatus 10 according to embodiment 2. As functional blocks, the control device 17 of embodiment 2 includes a drive control unit 17a, an information acquisition unit 17d, a follow-up determination unit 17e, and a notification unit 17c.
When the machine room 11 moves upward, the information acquisition unit 17d acquires movement information from the outside, which is information related to movement of the machine room 11. The movement information includes, for example, information of at least one of the movement amount and the movement speed of the machine room 11.
The movement information can be obtained from at least one of a drive state signal, a crane control signal, a crane detection signal, and a machine room detection signal.
The driving state signal is a signal corresponding to the driving state of the crane device 3, and is outputted from the driving unit of the crane device 3. The crane control signal is a signal for controlling the crane device 3. The crane detection signal is a signal from a sensor that detects the actual operation of the crane device 3. The room detection signal is a signal from a sensor that directly detects movement of the room 11.
When the machine room 11 moves upward, the drive control unit 17a controls the hoisting machine 12 so that the supply of the suspension body 13 into the hoistway 2 follows the movement of the machine room 11, based on the information from the information acquisition unit 17d, and supplies the suspension body 13 into the hoistway 2.
When the machine room 11 moves upward, the follow-up determination unit 17e determines whether or not the supply of the suspension body 13 can follow the movement of the machine room 11, based on the information from the information acquisition unit 17d and the information from the drive control unit 17 a.
When it is determined that the supply of the hanger 13 cannot follow the movement of the machine room 11 when the machine room 11 moves upward, the notification unit 17c outputs a job suspension instruction for suspending the movement of the machine room 11 to the outside.
The overall structure of the elevator apparatus 10 is the same as that of fig. 1 or 4 except for the function of the control apparatus 17 shown in fig. 5.
Fig. 6 is a flowchart showing the operation of the control device 17 of fig. 5 when the machine room 11 moves upward. When the operation of raising the machine room 11 is started, the control device 17 acquires movement information in step S201.
Next, the control device 17 calculates a drive command that follows the movement of the machine room 11 in step S202, and outputs the calculated drive command to the hoisting machine 12.
Then, the control device 17 determines in step S203 whether or not the calculated drive command is a command capable of following the movement of the machine room 11.
If the determination result in step S203 is "follow-up enabled", the control device 17 determines in step S204 whether or not to end the movement operation of the machine room 11. Whether or not to end the moving job is determined by the presence or absence of a job end signal input to the control device 17.
When it is determined in step S204 that the job is not to be ended, the control device 17 repeatedly executes the processing from step S201 to step S204.
When it is determined in step S204 that the movement operation of the machine room 11 is completed, the control device 17 outputs a command to stop the rotation of the drive sheave 18 to the hoisting machine 12 in step S205, and ends the process of fig. 6.
When the moving speed of the machine room 11 by the crane device 3 exceeds the supply capacity of the suspension body 13 by the hoisting machine 12, the control device 17 determines that "following cannot be performed" in step S203. In this case, the control device 17 outputs a job suspension command to the outside in step S206, stops the rotation of the drive sheave 18, and ends the process of fig. 6.
In this way, the same effects as those of embodiment 1 can be obtained by the configuration in which the hoisting machine 12 is controlled in accordance with the lifting operation of the machine room 11 by the crane device 3.
Embodiment 3
Next, fig. 7 is a block diagram showing an elevator apparatus 10 according to embodiment 3. In embodiment 3, a tension detecting device 51 is provided in the machine room 11. The tension detecting device 51 detects the tension of the suspension body 13 at the 2 nd end portion 13b, and outputs a signal corresponding to the tension of the suspension body 13.
Fig. 8 is a block diagram showing a main part of the elevator apparatus 10 of fig. 7. The control device 17 includes a drive control unit 17a, a tension monitor unit 17g, and a notification unit 17c.
The tension monitoring unit 17g monitors whether the tension of the suspension body 13 is within a set range based on a signal from the tension detecting device 51. When the machine room 11 moves upward, the drive control unit 17a controls the hoisting machine 12 so that the tension of the suspension body 13 falls within a set range based on a signal from the tension monitor unit 17 g.
When the detected value of the tension of the suspension body 13 is greater than the upper limit value when the machine room 11 is moved upward, the notification unit 17c outputs a work suspension instruction for suspending the movement of the machine room 11 to the outside.
The specific operation of the control device 17 is the same as in fig. 3. Here, in embodiment 3, td in fig. 3 is a tension detection value, tmax is a tension upper limit value, tmin is a tension lower limit value, ts1 is a tension 1 st set value, and Ts2 is a tension 2 nd set value.
The configuration and control method of the elevator apparatus 10 are the same as those of embodiment 1, except that the hoisting machine 12 is controlled based on the tension of the suspension body 13 detected by the tension detection device 51.
In this way, the same effects as those of embodiment 1 can be obtained even with the structure in which the tension of the suspension body 13 is directly detected by the tension detecting device 51.
The structure of embodiment 3 can also be applied to the modification shown in fig. 4. In this case, the tension detecting means 51 detects the tension of the suspension body 13 at the 1 st end 13 a.
Embodiment 4
Next, fig. 9 is a block diagram showing the hoisting machine 12 of the elevator apparatus 10 according to embodiment 4. The hoisting machine 12 of embodiment 4 is provided with a plurality of friction force increasing mechanisms 31. The plurality of friction force increasing mechanisms 31 are arranged radially outward of the drive sheave 18. The plurality of friction force increasing mechanisms 31 are disposed at equal intervals in the circumferential direction of the drive sheave 18. In fig. 9, 3 friction force increasing mechanisms 31 are used.
Each friction force increasing mechanism 31 presses the suspension body 13 toward the center of the drive sheave 18 toward the drive sheave 18. Thereby, the friction force between the suspension body 13 and the drive sheave 18 is increased by the friction force increasing mechanisms 31. Each friction force increasing mechanism 31 includes a roller holding portion 32, a pressing roller 33, and an annular contact member 34.
The pressing roller 33 is rotatably supported by the roller holding portion 32. The roller holding portion 32 generates a force for pressing the pressing roller 33 against the hanging body 13. The contact member 34 is provided on the outer periphery of the pressing roller 33 and contacts the suspension body 13. As a material of the contact member 34, for example, rubber or resin is used.
The overall structure of the elevator apparatus 10 and the functions of the control device 17 are the same as those of embodiment 1, embodiment 2 or embodiment 3 except for the structure of the hoisting machine 12 shown in fig. 9.
In the traction-type elevator apparatus 10, the suspension body 13 is sent out by a frictional force acting between the suspension body 13 and the drive sheave 18. Therefore, when a load greater than the friction force is applied to the suspension body 13, the suspension body 13 cannot be sent out in an expected manner.
For example, in the structure of fig. 1, the length of the suspension body 13 from the drive sheave 18 to the counterweight suspending sheave 23 is longer than the length of the suspension body 13 from the drive sheave 18 to the car suspending sheave 21. Therefore, an unbalanced load of the suspension body 13 acts on the drive sheave 18.
The greater the upward movement of the machine room 11, the greater the unbalanced load of the suspension body 13. When the unbalanced load of the suspension body 13 is greater than the frictional force acting between the suspension body 13 and the drive sheave 18, the suspension body 13 is sent to the counterweight 15 side regardless of the rotation operation of the drive sheave 18.
As a result, the suspended body 13 is excessively discharged from the winding device 16, and the suspended body 13 is still in a relaxed state after the machine room 11 is lifted, and the rewinding operation of the excessive suspended body 13 is required.
In contrast, in embodiment 4, the plurality of friction force increasing mechanisms 31 press the suspension body 13 against the drive sheave 18, and the friction force between the suspension body 13 and the drive sheave 18 is increased. Therefore, even if the difference between the distance from the drive sheave 18 to the car 14 and the distance from the drive sheave 18 to the counterweight 15 becomes large, the suspension 13 can be prevented from being accidentally sent out.
Further, it is preferable that the pressing force of the friction force increasing mechanism 31 against the suspension body 13 is set to a minimum force that can hold the suspension body 13 on the drive sheave 18 even when the unbalanced load of the suspension body 13 acting on the drive sheave 18 becomes maximum. This can suppress wear and tear of the suspension body 13 and the drive sheave 18 caused by the friction force increasing mechanism 31.
The unbalanced load acting on the suspension body 13 of the drive sheave 18 is greatest when the building 1 is built so that the vertical dimension of the hoistway 2 is greatest. Therefore, for example, the pressing force of each friction force increasing mechanism 31 can be designed so that the required minimum traction ability can be ensured assuming an unbalanced load acting on the suspension body 13 of the drive sheave 18 when the building 1 is built.
The number of friction force increasing mechanisms may be one or two or four or more.
Embodiment 5
Next, fig. 10 is a block diagram showing a hoisting machine 12 of an elevator apparatus 10 according to embodiment 5. The traction machine 12 of embodiment 5 is provided with a friction force increasing mechanism 41. The friction force increasing mechanism 41 presses the suspension body 13 toward the center of the drive sheave 18 toward the drive sheave 18. Thereby, the friction force increasing mechanism 41 increases the friction force between the suspension body 13 and the drive sheave 18.
The friction force increasing mechanism 41 includes a 1 st roller 42, a 2 nd roller 43, a 3 rd roller 44, and an endless pressing belt 45. The 1 st roller 42 and the 2 nd roller 43 are disposed on the left and right sides of the drive sheave 18. The 3 rd roller 44 is disposed directly above the drive sheave 18.
The pressing belt 45 is wound around the 1 st roller 42, the 2 nd roller 43, and the 3 rd roller 44. The portion of the pressing belt 45 between the 1 st roller 42 and the 2 nd roller 43 is in contact with the hanging body 13.
Tension is applied to the pressing belt 45 by the 1 st roller 42, the 2 nd roller 43, and the 3 rd roller 44. Thereby, the pressing belt 45 is pressed against the hanging body 13. The configuration and control method of the elevator apparatus 10 other than the friction increasing mechanism 41 are the same as those of embodiment 4.
The friction force increasing mechanism 41 can also obtain the same effects as those of embodiment 4.
Further, since the pressing belt 45 is pressed against the suspension body 13, the force applied to the suspension body 13 and the drive sheave 18 can be dispersed in the circumferential direction of the drive sheave 18. Therefore, wear and damage to the suspension body 13 and the drive sheave 18 can be suppressed.
The number of rollers may be two or four or more.
Embodiment 6
Next, fig. 11 is a configuration diagram showing an elevator apparatus 10 according to embodiment 6. In embodiment 6, a holding device 52 is provided in the machine room 11. The holding device 52 holds the suspension body 13 by sandwiching the suspension body 13 with two holding members. Furthermore, the holding force of the holding device 52 on the suspension body 13 can be adjusted. The holding device 52 holds the suspension body 13 between the winding device 16 and the car sheave 21.
Fig. 12 is a block diagram showing a main part of the elevator apparatus 10 of fig. 11. As functional blocks, the control device 17 includes a drive control unit 17a, a torque detection unit 17b, a notification unit 17c, and a holding force control unit 17h.
The holding force control unit 17h controls the holding force of the holding device 52 on the suspension body 13. The holding force control unit 17h controls the holding force of the holding device 52 on the suspension body 13 based on the difference between the distance from the drive sheave 18 to the car 14 and the distance from the drive sheave 18 to the counterweight 15.
The holding force control unit 17h controls the holding force of the holding device 52 on the suspension body 13 so that at least a part of the unbalanced load acting on the suspension body 13 of the drive sheave 18 can be supported.
The configuration and control method of the elevator apparatus 10 other than the holding device 52 and the holding force control unit 17h are the same as those of any one of embodiments 1 to 5.
In such an elevator apparatus 10, even when the unbalanced load of the suspension body 13 is greater than the frictional force between the drive sheave 18 and the suspension body 13, the suspension body 13 can be held on the drive sheave 18. Further, by adjusting the holding force of the holding device 52, the suspension body 13 can be released from the winding device 16 only when the hoisting machine 12 is driven.
Fig. 13 is a block diagram showing a modification of the elevator apparatus 10 according to embodiment 6. This modification is an example in which a holding device 52 is added to the elevator apparatus of fig. 4. In this example, the holding device 52 holds the suspension body 13 between the winding device 16 and the counterweight sheave 23.
The holding device 52 can hold the suspension body 13 between the drive sheave 18 and the wrap around device 16. Therefore, in the structure of fig. 11, the holding device 52 may hold the suspension body 13 between the drive sheave 18 and the car sheave 21. In the structure of fig. 13, the holding device 52 may hold the suspension body 13 between the drive sheave 18 and the counterweight sheave 23.
Embodiment 7
Next, fig. 14 is a block diagram showing an elevator apparatus 10 according to embodiment 7. In the elevator apparatus 10 of fig. 14, when the machine room 11 moves upward, the car 14 as the 1 st lifting body is supported by the support table 7. Further, when the machine room 11 moves in the upward direction, the counterweight 15 as the 2 nd lifting body is suspended from the machine room 11 by the winch 6. The other structure is the same as fig. 11.
In this configuration, when the machine room 11 moves upward, the suspension body 13 is supplied between the drive sheave 18 and the winding device 16. Therefore, when the machine room 11 moves upward, the control device 17 controls the hoisting machine 12 so that the speed of the drive sheave 18 becomes 0.
The holding force control unit 17h controls the holding device 52 so that the suspension body 13 is held by a preset holding force when the machine room 11 moves upward.
The machine room 11 is lifted by the crane device 3, whereby the tension of the suspension body 13 becomes large. Then, when the tension of the suspension body 13 exceeds the holding force of the holding device 52, the suspension body 13 is pulled out from the winding device 16. That is, the suspension body 13 is automatically pulled out from the winding device 16 in a state where an appropriate tension is applied.
According to the elevator apparatus 10, even when the machine room 11 moves upward, the control device 17 drives and controls the hoisting machine 12, and the suspension body 13 is sent out into the hoistway 2. Therefore, the use stop period of the elevator apparatus 10 due to the upward movement of the machine room 11 can be shortened. This shortens the construction period of the building 1, thereby enabling the construction to be completed as soon as possible.
Fig. 15 is a block diagram showing a modification of the elevator apparatus 10 according to embodiment 7. In the elevator apparatus 10 of fig. 15, when the machine room 11 moves upward, the counterweight 15 as the 1 st lifting body is supported by the support table 7. When the machine room 11 moves upward, the car 14 as the 2 nd elevator is suspended from the machine room 11 by the winch 6. The other structure is the same as fig. 13.
According to this modification, the same effect as in the elevator apparatus 10 of fig. 14 can be obtained.
Embodiment 8
Next, fig. 16 is a block diagram showing an elevator apparatus 10 according to embodiment 8. In the elevator apparatus 10 of fig. 16, the same tension detecting apparatus 51 as in embodiment 3 is provided in the machine room 11 in addition to the structure of fig. 11. The tension detecting device 51 detects the tension of the suspension body 13 at the 2 nd end portion 13 b.
Fig. 17 is a block diagram showing a main part of the elevator apparatus 10 of fig. 16. As functional blocks, the control device 17 includes a drive control unit 17a, a torque detection unit 17b, a notification unit 17c, a tension monitoring unit 17g, and a holding force control unit 17h.
The tension monitoring unit 17g monitors whether the tension of the suspension body 13 is within a set range based on a signal from the tension detecting device 51.
When the machine room 11 moves upward, the holding force control unit 17h controls the holding force of the holding device 52 so that the tension of the suspension body 13 falls within a set range based on a signal from the tension monitor unit 17 g.
The holding force control unit 17h also sets a set value of the tension of the suspension body 13. When the machine room 11 moves upward, the holding force control unit 17h controls the holding force of the holding device 52 on the suspension body 13 so that the tension of the suspension body 13 is lower than the set value. The set value is preset based on the tension of the suspension body 13 before the machine room 11 moves upward.
The configuration and control method of the elevator apparatus 10 other than the tension detection device 51, the holding device 52, the tension monitoring unit 17g, and the holding force control unit 17h are the same as those of embodiment 1.
In the elevator apparatus 10, since the holding force of the holding device 52 is controlled in accordance with the tension change of the suspension body 13 caused by the upward movement of the machine room 11, the tension of the suspension body 13 can be controlled with higher accuracy.
Fig. 18 is a block diagram showing modification 1 of the elevator apparatus 10 according to embodiment 8. In modification 1, the tension detecting device 51 is provided in the machine room 11 in addition to the structure of fig. 13. The tension detecting device 51 is connected to the 1 st end 13a of the suspension body 13.
Fig. 19 is a block diagram showing modification 2 of the elevator apparatus 10 according to embodiment 8. In modification 2, the tension detecting device 51 is provided in the machine room 11 in addition to the structure of fig. 14. The tension detecting device 51 is connected to the 2 nd end 13b of the suspension body 13.
Fig. 20 is a block diagram showing modification 3 of the elevator apparatus 10 according to embodiment 8. In modification 3, the tension detecting device 51 is provided in the machine room 11 in addition to the structure of fig. 15. The tension detecting device 51 is connected to the 1 st end 13a of the suspension body 13.
According to the 1 st modification, the 2 nd modification, and the 3 rd modification, the tension of the suspension body 13 can be controlled with higher accuracy.
Here, each function of the control device 17 according to embodiments 1 to 8 is realized by a processing circuit. Fig. 21 is a block diagram showing example 1 of a processing circuit for realizing the functions of the control device 17 according to embodiments 1 to 8. The processing circuit 100 of example 1 is dedicated hardware.
Furthermore, the processing circuit 100 corresponds to, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit: application specific integrated circuit), an FPGA (Field Programmable Gate Array: field programmable gate array), or a combination thereof. The functions of the control device 17 may be realized by the independent processing circuit 100. Further, two or more functions among the plurality of functions of the control device 17 may be realized by the shared processing circuit 100.
Fig. 22 is a block diagram showing an example 2 of a processing circuit for realizing the functions of the control device 17 according to embodiments 1 to 8. The processing circuit 200 of example 2 includes a processor 201 and a memory 202.
In the processing circuit 200, each function of the control device 17 is implemented by software, firmware, or a combination of software and firmware. The software and firmware are described as programs and stored in the memory 202. The processor 201 realizes functions by reading out and executing programs stored in the memory 202.
The program stored in the memory 202 may be a program for causing a computer to execute the steps or the methods of the respective units. Here, the Memory 202 is a nonvolatile or volatile semiconductor Memory such as RAM (Random Access Memory: random access Memory), ROM (Read Only Memory), flash Memory, EPROM (Erasable Programmable Read Only Memory: erasable programmable Read Only Memory), EEPROM (Electrically Erasable Programmable Read Only Memory: electrically erasable programmable Read Only Memory), or the like. Further, magnetic disks, floppy disks, optical disks, CDs (compact discs), mini discs (mini discs), DVDs (Digital Versatile Disk: digital versatile discs), and the like also belong to the memory 202.
The functions of the above-described respective units may be partially implemented by dedicated hardware, and partially implemented by software or firmware.
Thus, the processing circuit can implement the functions of the respective sections described above by hardware, software, firmware, or a combination thereof.
The device for moving the machine room 11 upward is not limited to the crane device.
Further, the roping method is not limited to 2:1 roping, for example, may be 1:1 a rope winding mode. At 1: in the case of the 1-roping method, the winding device can be provided in the car or the counterweight.
The elevator apparatus may be a dedicated elevator apparatus used only during construction. In this case, after the building is constructed, the elevator apparatus is removed, and a new elevator apparatus is installed in the building.
In addition, the elevator installation as a whole, or at least a part of the equipment, may also be left in use after the building has been constructed.
Description of the reference numerals
2: a hoistway; 7: a support table; 10: an elevator apparatus; 11: a machine room; 12: a traction machine; 13: a hanging body; 14: a car (1 st lifting body, 2 nd lifting body); 15: counterweight (2 nd lifter, 1 st lifter); 16: a winding device; 17: a control device; 18: a drive sheave; 21: a car hanging wheel; 23: a counterweight hanging wheel; 31. 41: friction force increasing mechanism; 33: pressing rollers; 45: pressing the belt; 51: a tension detecting device; 52: and a holding device.
Claims (36)
1. An elevator apparatus, wherein the elevator apparatus comprises:
a machine room that can be driven to move in an upward direction in a hoistway;
a traction machine having a drive sheave and disposed in the machine room;
a suspension body wound around the drive sheave;
a 1 st lifting body;
a 2 nd elevator body that is on an opposite side of the 1 st elevator body with respect to the drive sheave, and in which the 1 st elevator body and the 2 nd elevator body are suspended in the hoistway, or in which one of the 1 st elevator body and the 2 nd elevator body is suspended in the hoistway and the other is supported in the hoistway; and
A winding device that winds the suspension body;
it is characterized in that the method comprises the steps of,
the elevator device further comprises:
a control device for controlling the traction machine,
the control device controls the hoisting machine when the machine room moves upward, and thereby the suspension body is sent out from the winding device to the hoistway.
2. The elevator apparatus according to claim 1, wherein,
the 1 st lifting body and the 2 nd lifting body are respectively provided with hanging wheels,
the winding device is arranged in the machine room,
the suspension body is wound around the hanging wheel of the 1 st lifting body, the driving rope wheel and the hanging wheel of the 2 nd lifting body from the winding device side in turn,
the 1 st lifting body is suspended from the machine room when the machine room moves upwards,
the 2 nd lifting body is supported by a support table provided in the hoistway when the machine room moves upward.
3. The elevator apparatus according to claim 1, wherein,
the control device controls the traction machine in such a manner that the tension of the suspension body is within a set range when the machine room moves in an upward direction.
4. The elevator apparatus according to claim 2, wherein,
The control device controls the traction machine in such a manner that the tension of the suspension body is within a set range when the machine room moves in an upward direction.
5. The elevator apparatus according to claim 1, wherein,
the control device controls the hoisting machine so that the torque load of the hoisting machine is within a set range when the machine room moves in an upward direction.
6. The elevator apparatus according to claim 2, wherein,
the control device controls the hoisting machine so that the torque load of the hoisting machine is within a set range when the machine room moves in an upward direction.
7. The elevator apparatus according to claim 3, wherein,
the control device controls the hoisting machine so that the torque load of the hoisting machine is within a set range when the machine room moves in an upward direction.
8. The elevator apparatus according to claim 4, wherein,
the control device controls the hoisting machine so that the torque load of the hoisting machine is within a set range when the machine room moves in an upward direction.
9. The elevator apparatus according to claim 3, wherein,
The elevator apparatus further includes a tension detecting device that outputs a signal corresponding to the tension of the suspension body,
and the control device controls the traction machine according to a signal from the tension detection device when the machine room moves upwards.
10. The elevator apparatus according to claim 4, wherein,
the elevator apparatus further includes a tension detecting device that outputs a signal corresponding to the tension of the suspension body,
and the control device controls the traction machine according to a signal from the tension detection device when the machine room moves upwards.
11. The elevator apparatus according to claim 3, wherein,
the control device is provided with a lower limit value of the tension of the suspension body,
the control device stops rotation of the drive sheave when the tension of the suspension body becomes smaller than the lower limit value when the machine room moves in the upward direction.
12. The elevator apparatus according to claim 4, wherein,
the control device is provided with a lower limit value of the tension of the suspension body,
the control device stops rotation of the drive sheave when the tension of the suspension body becomes smaller than the lower limit value when the machine room moves in the upward direction.
13. The elevator apparatus according to claim 5, wherein,
the control device is provided with a lower limit value of the tension of the suspension body,
the control device stops rotation of the drive sheave when the tension of the suspension body becomes smaller than the lower limit value when the machine room moves in the upward direction.
14. The elevator apparatus according to claim 6, wherein,
the control device is provided with a lower limit value of the tension of the suspension body,
the control device stops rotation of the drive sheave when the tension of the suspension body becomes smaller than the lower limit value when the machine room moves in the upward direction.
15. The elevator apparatus according to claim 7, wherein,
the control device is provided with a lower limit value of the tension of the suspension body,
the control device stops rotation of the drive sheave when the tension of the suspension body becomes smaller than the lower limit value when the machine room moves in the upward direction.
16. The elevator apparatus according to claim 8, wherein,
the control device is provided with a lower limit value of the tension of the suspension body,
the control device stops rotation of the drive sheave when the tension of the suspension body becomes smaller than the lower limit value when the machine room moves in the upward direction.
17. The elevator apparatus according to claim 9, wherein,
the control device is provided with a lower limit value of the tension of the suspension body,
the control device stops rotation of the drive sheave when the tension of the suspension body becomes smaller than the lower limit value when the machine room moves in the upward direction.
18. The elevator apparatus of claim 10, wherein,
the control device is provided with a lower limit value of the tension of the suspension body,
the control device stops rotation of the drive sheave when the tension of the suspension body becomes smaller than the lower limit value when the machine room moves in the upward direction.
19. The elevator apparatus according to claim 1, wherein,
the control device obtains information on movement of the machine room from the outside when the machine room moves in an upward direction, and controls the hoisting machine so as to follow the movement of the machine room based on the information.
20. The elevator apparatus according to claim 2, wherein,
the control device obtains information on movement of the machine room from the outside when the machine room moves in an upward direction, and controls the hoisting machine so as to follow the movement of the machine room based on the information.
21. The elevator apparatus according to claim 1, wherein,
the 1 st lifting body and the 2 nd lifting body are respectively provided with hanging wheels,
the winding device is arranged in the machine room,
the suspension body is wound around the hanging wheel of the 1 st lifting body, the driving rope wheel and the hanging wheel of the 2 nd lifting body from the winding device side in turn,
the 1 st lifting body is supported by a supporting table arranged in the well when the machine room moves upwards,
the 2 nd lifting body is suspended from the machine room when the machine room moves upwards,
the control device controls the hoisting machine so that the speed of the drive sheave becomes 0 when the machine room moves upward.
22. The elevator arrangement according to any one of claims 1 to 21, wherein,
the traction machine is provided with a friction force increasing mechanism that presses the suspension body against the drive sheave.
23. The elevator apparatus of claim 22, wherein,
the friction force increasing mechanism has a pressing roller that is pressed against the suspension body.
24. The elevator apparatus of claim 22, wherein,
The friction force increasing mechanism has a pressing belt that is pressed against the suspension body.
25. The elevator arrangement according to any one of claims 1 to 21, wherein,
the elevator apparatus further includes a holding device that holds the suspension body between the drive sheave and the winding device,
the holding force of the holding device on the suspension body can be adjusted.
26. The elevator apparatus of claim 22, wherein,
the elevator apparatus further includes a holding device that holds the suspension body between the drive sheave and the winding device,
the holding force of the holding device on the suspension body can be adjusted.
27. The elevator apparatus of claim 23, wherein,
the elevator apparatus further includes a holding device that holds the suspension body between the drive sheave and the winding device,
the holding force of the holding device on the suspension body can be adjusted.
28. The elevator apparatus of claim 24, wherein,
the elevator apparatus further includes a holding device that holds the suspension body between the drive sheave and the winding device,
The holding force of the holding device on the suspension body can be adjusted.
29. The elevator apparatus of claim 25, wherein,
and when the control device moves upwards in the machine room, the holding force of the holding device on the hanging body is controlled.
30. The elevator apparatus of claim 26, wherein,
and when the control device moves upwards in the machine room, the holding force of the holding device on the hanging body is controlled.
31. The elevator apparatus of claim 27, wherein,
and when the control device moves upwards in the machine room, the holding force of the holding device on the hanging body is controlled.
32. The elevator apparatus of claim 28, wherein,
and when the control device moves upwards in the machine room, the holding force of the holding device on the hanging body is controlled.
33. The elevator apparatus of claim 29, wherein,
the control device is provided with a set value of the tension of the suspension body,
and the control device controls the holding force of the holding device on the suspension body in a mode that the tension of the suspension body is lower than the set value when the machine room moves upwards.
34. The elevator apparatus of claim 30, wherein,
the control device is provided with a set value of the tension of the suspension body,
and the control device controls the holding force of the holding device on the suspension body in a mode that the tension of the suspension body is lower than the set value when the machine room moves upwards.
35. The elevator apparatus of claim 31, wherein,
the control device is provided with a set value of the tension of the suspension body,
and the control device controls the holding force of the holding device on the suspension body in a mode that the tension of the suspension body is lower than the set value when the machine room moves upwards.
36. The elevator apparatus of claim 32, wherein,
the control device is provided with a set value of the tension of the suspension body,
and the control device controls the holding force of the holding device on the suspension body in a mode that the tension of the suspension body is lower than the set value when the machine room moves upwards.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2019/049624 WO2021124481A1 (en) | 2019-12-18 | 2019-12-18 | Elevator device |
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| Publication Number | Publication Date |
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| CN114761344A CN114761344A (en) | 2022-07-15 |
| CN114761344B true CN114761344B (en) | 2024-02-13 |
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| JP (1) | JP7161819B2 (en) |
| CN (1) | CN114761344B (en) |
| DE (1) | DE112019007977T5 (en) |
| WO (1) | WO2021124481A1 (en) |
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| JP7144905B1 (en) * | 2021-11-29 | 2022-09-30 | 三菱電機株式会社 | Elevator for lift extension type construction |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE112019007977T5 (en) | 2022-09-29 |
| CN114761344A (en) | 2022-07-15 |
| JP7161819B2 (en) | 2022-10-27 |
| WO2021124481A1 (en) | 2021-06-24 |
| JPWO2021124481A1 (en) | 2021-06-24 |
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