CN111566036A - Control device having function of maintaining position of elevator car at position suitable for operation, and elevator system - Google Patents
Control device having function of maintaining position of elevator car at position suitable for operation, and elevator system Download PDFInfo
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- CN111566036A CN111566036A CN201880085516.7A CN201880085516A CN111566036A CN 111566036 A CN111566036 A CN 111566036A CN 201880085516 A CN201880085516 A CN 201880085516A CN 111566036 A CN111566036 A CN 111566036A
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- Prior art keywords
- car
- hoistway
- state
- housing portion
- control device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
Abstract
Provided is a control device for an elevator, which can maintain the position of a car at a position suitable for operation. The elevator control device comprises: a detection unit that detects that an operator is located in a car of an elevator; and a control unit that, when the mode of the elevator is a maintenance operation mode, causes a car-side contact provided on the car side to protrude and moves the car to a predetermined position when the detection unit detects an operator, causes a hoistway-side movement inhibitor provided on the hoistway side of the elevator to move toward the car-side contact, and causes the hoistway-side movement inhibitor to contact the car-side contact, thereby inhibiting movement of the car.
Description
Technical Field
The present invention relates to a control device and an elevator system having a function of maintaining a car position of an elevator at a position suitable for work.
Background
For example, patent document 1 discloses an elevator system. The elevator system can stop the car when detecting an operator located above the car.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 62-96285
Disclosure of Invention
Problems to be solved by the invention
However, in the elevator system described in patent document 1, an error in operation control may occur. In this case, the car may not stop as intended. Therefore, even if the control described in patent document 1 is applied to the operation from above the car, the position of the car may not be maintained at a position suitable for the operation.
The present invention has been made to solve the above problems. An object of the present invention is to provide an elevator control device and an elevator system capable of maintaining the position of a car at a position suitable for work.
Means for solving the problems
The elevator control device of the invention comprises: a detection unit that detects that an operator is located in a car of an elevator; and a control unit that, when the mode of the elevator is a maintenance operation mode, causes a car-side contact provided on the car side to protrude and moves the car to a predetermined position when the detection unit detects an operator, causes a hoistway-side movement inhibitor provided on the hoistway side of the elevator to move toward the car-side contact, and causes the hoistway-side movement inhibitor to contact the car-side contact, thereby inhibiting movement of the car.
The elevator system of the invention comprises: a detection device for detecting an operator located in a car of an elevator; a shaft side movement inhibitor provided on a shaft side of the elevator; a car-side contact provided on the car side; and a control device that, when the mode of the elevator is a maintenance operation mode, causes the car-side contact to protrude when the detection device detects an operator, and when the car is moved by operation of the operator, causes the car to move to a predetermined position, causes the hoistway-side movement suppression body to move toward the car-side contact, and causes the hoistway-side movement suppression body to contact the car-side contact, thereby suppressing movement of the car.
Effects of the invention
According to these inventions, the movement of the car is suppressed by bringing the hoistway-side movement suppression body into contact with the car-side contact body. Therefore, the position of the car can be maintained at a position suitable for work.
Drawings
Fig. 1 is a configuration diagram of an elevator system according to embodiment 1.
Fig. 2 is a perspective view of a main part of an elevator system according to embodiment 1.
Fig. 3 is a perspective view of a main part of an elevator system according to embodiment 1.
Fig. 4 is a perspective view of a main part of an elevator system according to embodiment 1.
Fig. 5 is a side view of a main part of an elevator system in embodiment 1.
Fig. 6 is a perspective view of a main part of an elevator system according to embodiment 1.
Fig. 7 is a perspective view of a main part of an elevator system according to embodiment 1.
Fig. 8 is a perspective view of a main part of an elevator system according to embodiment 1.
Fig. 9 is a perspective view of a main part of an elevator system according to embodiment 1.
Fig. 10 is a flowchart for explaining an outline of an operation of the control device of the elevator system in embodiment 1.
Fig. 11 is a flowchart for explaining an outline of an operation of the control device of the elevator system in embodiment 1.
Fig. 12 is a hardware configuration diagram of a control device of an elevator system in embodiment 1.
Detailed Description
The mode for carrying out the invention is explained in accordance with the drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals. Repeated explanation of this portion is appropriately simplified or omitted.
Fig. 1 is a configuration diagram of an elevator system according to embodiment 1.
The elevator system of fig. 1 is an elevator system without machine room. In this elevator system, a hoistway 1 penetrates each floor of a building. Each of a plurality of landings, not shown, is provided on each floor of the building. Each of the plurality of landings faces the hoistway 1.
The hoisting machine 2 is provided at an upper portion of the hoistway 1. The sheave 3 is attached to a rotating shaft of the hoisting machine 2. The main ropes 4 are wound around the sheave 3.
A pair of car-side guide rails, not shown, is provided in the hoistway 1. A pair of counterweight-side guide rails, not shown, are provided in the hoistway 1.
The car 5 is installed inside the hoistway 1. The car 5 is guided by a pair of car-side guide rails. The car 5 is supported by one side of the main rope 4. The counterweight 6 is disposed inside the hoistway 1. The counterweight 6 is guided by a pair of counterweight-side guide rails. The counterweight 6 is supported on the other side of the main rope 4.
The upper detection device 7 is provided on the ceiling portion of the car 5. For example, the upper detection device 7 is provided to be able to detect an operator positioned on the ceiling portion of the car 5 by a camera. For example, the upper detection device 7 is provided to be able to detect an operator positioned on the ceiling portion of the car 5 by the pressure sensing mat. For example, the upper detection device 7 is provided to be able to detect an operator positioned on the ceiling portion of the car 5 by recognizing a detection piece embedded in the operator's work clothes or safety shoes. In a normal state, electric power is supplied from a commercial power supply to the upper detection device 7. For example, the upper detection device 7 is provided so as to be able to detect an operator positioned on the ceiling of the car 5 by a switch that operates when the operator raises a safety fence folded on the ceiling of the car 5. During a power failure, power is supplied from the battery to the upper detection device 7.
The lower detection device 8 is provided at the lower portion of the hoistway 1. For example, the lower detection device 8 is provided to be able to detect an operator positioned at a lower portion of the hoistway 1 by a camera. For example, the lower detection device 8 is provided to be able to detect an operator located at the lower portion of the hoistway 1 by the pressure sensing mat. For example, the lower detection device 8 is provided to be able to detect an operator positioned in the lower part of the hoistway 1 by recognizing a detection piece embedded in the operator's work clothes or safety shoes. For example, the lower detection device 8 is provided so that an operator positioned at the lower part of the hoistway 1 can detect the operator by operating an illumination device that illuminates the work area at the lower part of the hoistway 1. In a normal state, electric power is supplied from a commercial power supply to the lower detection device 8. During a power failure, power is supplied from the battery to the lower detection device 8.
The car-side lift inhibitor 9 is provided in an upper portion of the hoistway 1. For example, the car-side ascent restraint body 9 is provided on one of the pair of car-side guide rails.
The car-side descent control body 10 is provided in a lower portion of the hoistway 1. For example, the car-side descent suppressing body 10 is provided on one of the pair of car-side guide rails.
The counterweight-side lowering inhibitor 11 is provided in the lower part of the hoistway 1. For example, the counterweight-side lowering inhibitor 11 is provided on one of the pair of counterweight-side guide rails.
The 1 st hoistway-side movement inhibitor 12 is provided in an upper portion of the hoistway 1. The 1 st hoistway-side movement inhibitor 12 is provided below the car-side elevation inhibitor 9. For example, the 1 st hoistway-side movement inhibitor 12 is provided on one of the pair of car-side guide rails.
The 2 nd hoistway-side movement inhibitor 13 is provided in the upper part of the hoistway 1. The 2 nd hoistway-side movement inhibitor 13 is provided between the car-side elevation inhibitor 9 and the 1 st hoistway-side movement inhibitor 12. For example, the 2 nd hoistway-side movement inhibitor 13 is provided on one of the pair of car-side guide rails.
The 3 rd hoistway-side movement inhibitor 14 is provided in the upper portion of the hoistway 1. The 3 rd hoistway-side movement inhibitor 14 is provided between the car-side elevation inhibitor 9 and the 2 nd hoistway-side movement inhibitor 13. For example, the 3 rd hoistway-side movement inhibitor 14 is provided on one of the pair of car-side guide rails.
The car-side contact 15 is provided to the car 5. For example, the car-side contact 15 is provided on the upper portion of the car 5.
The counterweight-side contact 16 is provided to the counterweight 6. For example, the counterweight-side contact 16 is provided at an upper portion of the counterweight 6.
The 1 st hoistway-side switch 17 is provided in the upper part of the hoistway 1. The 1 st shaft-side switch 17 is provided at a position corresponding to the 1 st shaft-side movement inhibitor 12. For example, the position in the vertical direction of the 1 st hoistway-side switch 17 is set to be the same as the position in the vertical direction of the 1 st hoistway-side movement inhibitor 12.
The 2 nd hoistway-side switch 18 is provided in the upper part of the hoistway 1. The 2 nd shaft-side switch 18 is provided at a position corresponding to the 2 nd shaft-side movement inhibitor 13. For example, the vertical position of the 2 nd hoistway-side switch 18 is set to be the same as the vertical position of the 2 nd hoistway-side movement inhibitor 13.
The 3 rd hoistway-side switch 19 is provided in the upper part of the hoistway 1. The 3 rd shaft-side switch 19 is provided at a position corresponding to the 3 rd shaft-side movement inhibitor 14. For example, the vertical position of the 3 rd well side switch 19 is set to be the same as the vertical position of the 3 rd well side movement inhibitor 14.
The control device 20 is provided in an upper portion of the hoistway 1. The control device 20 includes a housing 20a, a detection unit 20b, and a control unit 20 c.
The housing portion 20a constitutes an outer shell. For example, the case 20a is formed in a rectangular shape. The housing portion 20a is fixed to a wall surface of the hoistway 1.
The detection unit 20b is housed in the case 20 a. The detection unit 20b is provided to be able to detect that the operator is located on the ceiling portion of the car 5 based on the detection result of the upper detection device 7. The detection unit 20b is provided to be able to detect that the operator is located at the lower part of the hoistway 1 based on the detection result of the lower detection device 8.
The control unit 20c is housed in the case 20 a. The control unit 20c is provided to control the entire elevator system.
In the maintenance work of the elevator, the mode of the elevator is set to the mode of the maintenance work. When the elevator mode is the maintenance operation mode, the upper detection device 7 detects the operator positioned on the ceiling portion of the car 5 when the operator gets on the ceiling portion of the car 5.
At this time, in the control device 20, the detection portion 20b detects that the operator is located on the ceiling portion of the car 5. When the detection unit 20b detects an operator, the control unit 20c causes the car-side contact 15 to protrude horizontally in the direction of the car-side elevation inhibitor 9 by an operation mechanism not shown. The actuating mechanism is an actuator based on an electromagnet, a motor, a cylinder, or the like. The counterweight-side contact 16, the 1 st hoistway-side movement inhibitor 12, the 2 nd hoistway-side movement inhibitor 13, and the 3 rd hoistway-side movement inhibitor 14 also have the same operating mechanism.
Then, when the operator sets the ascending operation of the car 5 by a manual switch, not shown, the control unit 20c automatically ascends the car 5 to the optimum height for the operation below the housing portion 20a in the control device 20. When the car 5 reaches a height optimal for the work at the lower portion of the housing portion 20a, the control portion 20c automatically stops the car 5. At this time, the control unit 20c activates the dynamic brake of the hoisting machine 2.
Then, the operator operates the 1 st well side switch 17 from the 1 st state to the 2 nd state. When the 1 st hoistway-side switch 17 is in the 2 nd state, in the control device 20, the control unit 20c moves the 1 st hoistway-side movement inhibitor 12 toward the car 5 side by the operating mechanism. At this time, the 1 st hoistway-side movement inhibitor 12 contacts the car-side contact 15. As a result, movement of the car 5 is suppressed. In this state, the operator performs work on the lower portion of the control device 20.
Then, the operator operates the 1 st well side switch 17 from the 2 nd state to the 1 st state. When the 1 st hoistway-side switch 17 is in the 1 st state, in the control device 20, the control unit 20c moves the 1 st hoistway-side movement inhibitor 12 to the opposite side of the car 5 side by the operating mechanism. At this time, the 1 st hoistway-side movement inhibitor 12 and the car-side contact member 15 are released from contact with each other. As a result, the suppression of the movement of the car 5 is released.
Then, when the operator sets the raising operation of the car 5 using the manual switch, the control unit 20c deactivates the dynamic brake of the hoisting machine 2 in the control device 20. Then, the control unit 20c automatically raises the car 5 to a height optimum for the operation at the upper portion of the housing portion 20 a. When the car 5 reaches a height optimal for the work at the upper portion of the housing portion 20a, the control portion 20c automatically stops the car 5. At this time, the control unit 20c activates the dynamic brake of the hoisting machine 2.
Then, the operator operates the 2 nd hoistway side switch 18 from the 1 st state to the 2 nd state. When the 2 nd hoistway-side switch 18 is in the 2 nd state, in the control device 20, the control unit 20c moves the 2 nd hoistway-side movement inhibitor 13 toward the car 5 side by the operating mechanism. At this time, the 2 nd hoistway-side movement inhibitor 13 is in contact with the car-side contact 15. As a result, movement of the car 5 is suppressed. In this state, the operator performs work on the upper portion of the control device 20.
Then, the operator operates the 2 nd hoistway side switch 18 from the 2 nd state to the 1 st state. When the 2 nd hoistway-side switch 18 is in the 1 st state, in the control device 20, the control unit 20c moves the 2 nd hoistway-side movement inhibitor 13 to the opposite side of the car 5 side by the operating mechanism. At this time, the contact between the 2 nd hoistway-side movement inhibitor 13 and the car-side contact member 15 is released. As a result, the suppression of the movement of the car 5 is released.
Then, when the operator sets the raising operation of the car 5 using the manual switch, the control unit 20c deactivates the dynamic brake of the hoisting machine 2 in the control device 20. Then, the control unit 20c automatically raises the car 5 to a height optimal for the operation of the hoisting machine 2. When the car 5 reaches a height optimal for the operation of the hoisting machine 2, the control unit 20c automatically stops the car 5. At this time, the control unit 20c activates the dynamic brake of the hoisting machine 2.
Then, the operator operates the 3 rd well side switch 19 from the 1 st state to the 2 nd state. When the 3 rd hoistway-side switch 19 is in the 2 nd state, in the control device 20, the control unit 20c moves the 3 rd hoistway-side movement inhibitor 14 toward the car 5 side by the operating mechanism. At this time, the 3 rd hoistway-side movement inhibitor 14 contacts the car-side contact 15. As a result, movement of the car 5 is suppressed. In this state, the operator performs work on the hoisting machine 2.
Then, the operator operates the 3 rd well side switch 19 from the 2 nd state to the 1 st state. When the 3 rd hoistway-side switch 19 is in the 1 st state, in the control device 20, the control unit 20c moves the 3 rd hoistway-side movement inhibitor 14 to the opposite side of the car 5 side by the operating mechanism. At this time, the contact between the 3 rd hoistway-side movement inhibitor 14 and the car-side contact member 15 is released. As a result, the suppression of the movement of the car 5 is released.
When the car 5 rises for some reason while the dynamic brake of the hoisting machine 2 is activated, the car-side contact member 15 gradually approaches the car-side rise suppression member 9. Then, when the car 5 reaches the predetermined position, the car-side contact member 15 comes into contact with the car-side ascent suppressing member 9. As a result, the lift of the car 5 is mechanically suppressed. At this time, a safety region having a predetermined length, for example, a length equal to the height of the operator in the vertical direction is secured between the ceiling portion of the hoistway 1 and the car 5.
When the elevator mode is the maintenance operation mode, the lower detection device 8 detects a worker located at the lower part of the hoistway 1 when the worker enters the lower part of the hoistway 1.
At this time, in the control device 20, the detection unit 20b detects that the operator is located at the lower portion of the hoistway 1. When the detection unit 20b detects an operator, the control unit 20c causes the car-side contact 15 to protrude horizontally in the direction of the car-side lowering inhibitor 10 by the operating mechanism. When the operator is detected by the detection unit 20b, the control unit 20c causes the counterweight-side contact 16 to protrude horizontally in the direction toward the counterweight-side lowering inhibitor 11 by the operation mechanism.
When the car 5 descends for some reason while the dynamic brake of the hoisting machine 2 is activated, the car-side contact member 15 gradually approaches the car-side descent control member 10. Then, when the car 5 reaches a predetermined position, the car-side contact member 15 contacts the car-side descent control member 10. As a result, lowering of the car 5 is mechanically suppressed. At this time, a safety region having a predetermined length, for example, a length equal to the height of the operator in the vertical direction is secured between the bottom of the hoistway 1 and the bottom of the car 5.
When the counterweight 6 is lowered for some reason while the dynamic brake of the hoisting machine 2 is activated, the counterweight-side contact member 16 gradually approaches the counterweight-side lowering inhibitor 11. Then, when the counterweight 6 reaches the predetermined position, the counterweight-side contact member 16 contacts the counterweight-side lowering inhibitor 11. As a result, lowering of the counterweight 6 is mechanically suppressed. At this time, a safety region having a predetermined length, for example, a length equal to the height of the operator in the vertical direction is secured between the bottom of the hoistway 1 and the bottom of the counterweight 6.
Next, the suppression of the movement of the car 5 will be described with reference to fig. 2 to 5.
Fig. 2 to 4 are perspective views of main parts of an elevator system according to embodiment 1. Fig. 5 is a side view of a main part of an elevator system in embodiment 1.
As shown in fig. 2, the car-side contact 15 has a claw 15 a. The car-side contact body 15 is provided so that the claw 15a can move in the direction of the guide rail of the car 5 by the operating mechanism. As shown in fig. 2, the 1 st hoistway-side movement inhibitor 12 has a penetrating portion 12 a. The 1 st hoistway-side movement inhibitor 12 is provided such that the penetrating portion 12a can move in the direction of the car 5 by an operating mechanism, not shown. Fig. 2 shows a state in which the claw 15a of the car-side contact 15 does not move in the direction of the guide rail of the car 5, and a state in which the penetrating portion 12a of the 1 st hoistway-side movement inhibitor 12 does not move in the direction of the car 5. The 2 nd and 3 rd hoistway- side movement inhibitors 13 and 14 have the same configuration as the 1 st hoistway-side movement inhibitor 12, and therefore are not shown.
When the lower portion of the control device 20 not shown in fig. 3 to 5 is operated, the 1 st hoistway-side movement inhibitor 12 is moved toward the car 5 side by the operating mechanism as shown in fig. 3 to 5. At this time, the claw 15a penetrates the penetrating portion 12a of the 1 st hoistway-side movement inhibitor 12. In this state, when the car 5 is raised and lowered, the base portions of the claws 15a come into contact with the edge portions of the penetrating portions 12a of the 1 st hoistway-side movement inhibitor 12. As a result, movement of the car 5 is suppressed.
Although not shown, when the upper portion of the control device 20 is operated, the 2 nd hoistway-side movement inhibitor 13 is moved toward the car 5 by the operating mechanism. At this time, the claw 15a penetrates the penetrating portion of the 2 nd hoistway-side movement inhibitor 13. In this state, when the car 5 is raised and lowered, the base portions of the claws 15a come into contact with the edge portions of the penetrating portions of the 2 nd hoistway-side movement inhibitor 13. As a result, movement of the car 5 is suppressed.
Although not shown, when the hoisting machine 2 is operated, the 3 rd hoistway-side movement inhibitor 14 is moved toward the car 5 side by the operating mechanism. At this time, the claw 15a penetrates the penetrating portion of the 3 rd movement inhibitor. In this state, when the car 5 is raised and lowered, the base portion of the claw 15a comes into contact with the edge portion of the penetrating portion of the 3 rd hoistway-side movement inhibitor 14. As a result, movement of the car 5 is suppressed.
Next, the suppression of the rise of the car 5 will be described with reference to fig. 6 and 7.
Fig. 6 and 7 are perspective views of main parts of an elevator system according to embodiment 1.
As shown in fig. 6, the car-side ascent suppressing body 9 has a notch 9 a. The cutout 9a opens downward.
As shown in fig. 7, when the car 5 ascends to a predetermined position, the claw 15a of the car-side contact member 15 is received in the notch 9a of the car-side ascent restraint member 9. In this state, when the car 5 ascends, the base of the claw 15a contacts the upper edge of the notch 9a of the car-side ascent restraint body 9. As a result, the lift of the car 5 is suppressed.
Next, the suppression of the lowering of the car 5 and the suppression of the lowering of the counterweight 6 will be described with reference to fig. 8 and 9.
Fig. 8 and 9 are perspective views of main parts of an elevator system according to embodiment 1.
As shown in fig. 8, the car-side descent control body 10 has a notch 10 a. The notch 10a opens upward.
As shown in fig. 9, when the car 5 descends to a predetermined position, the claw 15a of the car-side contact 15 is received in the notch 10a of the car-side descent control member 10. In this state, when the car 5 descends, the base of the claw 15a contacts the lower edge of the notch 10a of the car-side descent control body 10. As a result, the lowering of the car 5 is suppressed.
Although not shown, the counterweight-side contact 16 has the same claw as the claw 15a of the car-side contact 15. The counterweight-side contact member 16 is provided so that a claw can move in the direction of the guide rail of the counterweight 6 by the operating mechanism.
Although not shown, the counterweight-side lowering inhibitor 11 has a notch. The notch opens upward.
When the counterweight 6 is lowered to a predetermined position, the claw of the counterweight-side contact member 16 is received in the notch of the counterweight-side lowering inhibitor 11. In this state, when the counterweight 6 is lowered, the base of the claw comes into contact with the lower edge of the through portion of the counterweight-side lowering inhibitor 11. As a result, the lowering of the counterweight 6 is suppressed.
Next, an outline of the operation of the control device 20 during maintenance work of the control device 20 and the hoisting machine 2 will be described with reference to fig. 10 and 11.
Fig. 10 and 11 are flowcharts for explaining an outline of an operation of the control device of the elevator system in embodiment 1.
In step S1, the control device 20 determines whether the raising operation of the car 5 is set by the manual switch.
If the ascending operation of the car 5 is not set by the manual switch in step S1, the control device 20 performs the operation of step S1. When the ascending operation of the car 5 is set by the manual switch in step S1, the control device 20 performs the operation of step S2.
In step S2, the control device 20 raises the car 5 to a height optimal for the work at the lower portion of the casing portion 20 a. Then, the control device 20 performs the operation of step S3. In step S3, the control device 20 stops the car 5 at a height most suitable for the work in the lower portion of the housing portion 20 a. Then, the control device 20 performs the operation of step S4.
In step S4, the control device 20 determines whether the 1 st well side switch 17 is operated from the 1 st state to the 2 nd state.
When the 1 st well side switch 17 is operated in step S4, the control device 20 performs the operation of step S5. In step S5, the control device 20 maintains the state in which the car 5 is stopped. Then, the control device 20 performs the operation of step S6. In step S6, the control device 20 determines whether the 1 st well side switch 17 is operated from the 2 nd state to the 1 st state.
If the 1 st well side switch 17 is not operated from the 2 nd state to the 1 st state in step S6, the control device 20 performs the operation of step S5. When the 1 st well side switch 17 is operated from the 2 nd state to the 1 st state in step S6, the control device 20 performs the operation of step S7.
When the 1 st well side switch 17 is not operated in step S4, the control device 20 also performs the operation of step S7.
In step S7, the control device 20 determines whether the raising operation of the car 5 is set by the manual switch.
If the ascending operation of the car 5 is not set by the manual switch in step S7, the control device 20 performs the operation of step S7. When the ascending operation of the car 5 is set by the manual switch in step S7, the control device 20 performs the operation of step S8.
In step S8, the control device 20 raises the car 5 to a height optimal for the work on the upper portion of the housing portion 20 a. Then, the control device 20 performs the operation of step S9. In step S9, the control device 20 stops the car 5 at a height most suitable for the work on the upper portion of the housing portion 20 a. Then, the control device 20 performs the operation of step S10.
In step S10, the control device 20 determines whether the 2 nd well side switch 18 is operated from the 1 st state to the 2 nd state.
When the 2 nd track side switch 18 is operated in step S10, the control device 20 performs the operation of step S11. In step S11, the control device 20 maintains the state in which the car 5 is stopped. Then, the control device 20 performs the operation of step S12. In step S12, the control device 20 determines whether the 2 nd well side switch 18 is operated from the 2 nd state to the 1 st state.
When the 2 nd hoistway-side switch 18 is not operated from the 2 nd state to the 1 st state in step S12, the control device 20 performs the operation of step S11. When the 1 st well side switch 17 is operated from the 2 nd state to the 1 st state in step S12, the control device 20 performs the operation of step S13.
When the 2 nd track side switch 18 is not operated in step S10, the control device 20 also performs the operation of step S13.
In step S13, the control device 20 determines whether the raising operation of the car 5 is set by the manual switch.
If the ascending operation of the car 5 is not set by the manual switch in step S13, the control device 20 performs the operation of step S13. When the ascending operation of the car 5 is set by the manual switch in step S13, the control device 20 performs the operation of step S14.
In step S14, the control device 20 raises the car 5 to a height optimal for the operation of the hoisting machine 2. Then, the control device 20 performs the operation of step S15. In step S15, the control device 20 stops the car 5 at an optimum height for the operation of the hoisting machine 2. Then, the control device 20 performs the operation of step S16.
In step S16, the control device 20 determines whether the 3 rd well side switch 19 is operated from the 1 st state to the 2 nd state.
When the 3 rd track side switch 19 is operated from the 1 st state to the 2 nd state in step S16, the control device 20 performs the operation of step S17. In step S17, the control device 20 maintains the state in which the car 5 is stopped. Then, the control device 20 performs the operation of step S18. In step S18, the control device 20 determines whether the 3 rd well side switch 19 is operated from the 2 nd state to the 1 st state.
When the 3 rd track side switch 19 is not operated from the 2 nd state to the 1 st state in step S18, the control device 20 performs the operation of step S18. When the 3 rd track side switch 19 is operated from the 2 nd state to the 1 st state in step S18, the control device 20 performs the operation of step S19.
When the 3 rd track side switch 19 is not operated from the 1 st state to the 2 nd state in step S16, the control device 20 also performs the operation of step S19.
In step S19, the control device 20 raises and lowers the car 5 in accordance with the operation state of the manual switch.
According to embodiment 1 described above, when the operator is detected, the up-and-down movement of the car 5 is suppressed. Further, the lowering of the counterweight 6 is suppressed. Therefore, it is possible to ensure the safety of the operator more reliably without attaching and detaching the buffer caps to and from the buffers of the car 5 and the counterweight 6. As a result, there is no need to worry about forgetting to attach or detach the cushion cap.
In addition, the buffer cap does not need to be detached, so that the convenience of the elevator user can be ensured. Specifically, the time during which the elevator cannot be used can be reduced during regular maintenance, regular inspection, maintenance of functions, repair of malfunctions, and the like.
When the operator is detected, the dynamic brake of the hoisting machine 2 is activated. Therefore, even if the car 5 ascends from the stopped state, the impact when the car-side contact body 15 contacts the car-side ascent suppressing body 9 can be reduced. Even if the car 5 descends from a stopped state, the impact when the car-side contact body 15 contacts the car-side descent control body 10 can be reduced. Even if the counterweight 6 is lowered from the stopped state, the impact when the counterweight-side contact member 16 contacts the counterweight-side lowering suppression member 11 can be reduced.
The car-side contact member 15 is accommodated in the notch 9a of the car-side ascent restraint member 9 when contacting the car-side ascent restraint member 9. Therefore, the car-side contact member 15 and the car-side ascent suppressing member 9 can be stably brought into contact with each other.
The car-side contact member 15 is accommodated in the notch 10a of the car-side descent control member 10 when contacting the car-side descent control member 10. Therefore, the car-side contact member 15 and the car-side descent control member 10 can be stably brought into contact with each other.
The counterweight-side contact 16 is accommodated in the cutout of the counterweight-side lowering inhibitor 11 when contacting the counterweight-side lowering inhibitor 11. Therefore, the counterweight-side contact member 16 and the counterweight-side lowering inhibitor 11 can be stably brought into contact with each other.
Further, the movement of the car 5 is suppressed by bringing the 1 st, 2 nd, and 3 rd hoistway-side movement suppressing members 12, 13, and 14 into contact with the car-side contact member 15. Therefore, the position of the car 5 can be maintained at a position suitable for work.
Specifically, the car 5 is maintained in a state of being stopped in order at positions corresponding to the lower portion of the control device 20, the upper portion of the control device 20, and the hoisting machine 2. Therefore, maintenance work can be efficiently performed on the lower portion of the control device 20, the upper portion of the control device 20, and the hoisting machine 2.
Further, the operation for maintaining the position of the car 5 is performed in a short time, so that the convenience of the users of the elevator can be ensured. Specifically, the time during which the elevator cannot be used can be reduced during regular maintenance, regular inspection, maintenance of functions, repair of malfunctions, and the like.
In the control device 20, the operating states of the claw 15a of the car-side contact member 15 and the claw of the counterweight-side contact member 16 may be detected. When the elevator mode is the normal mode, the operation of the elevator may be prevented when the claw 15a of the car-side contact member 15 or the claw of the counterweight-side contact member 16 protrudes.
Further, the lowering of the counterweight 6 can be suppressed by suppressing the raising of the car 5. In this case, the safety of the operator can be ensured more reliably even in the lower portion of the hoistway 1.
Further, the lowering of the car 5 can be suppressed by suppressing the raising of the counterweight 6. In this case, the safety of the operator can be ensured more reliably even in the lower portion of the hoistway 1.
Further, a hoistway-side movement inhibitor may be provided so that work related to equipment provided inside the hoistway can be performed at the position of the car 5. For example, a hoistway-side movement inhibitor may be provided to maintain the position of the car 5 at a position where work related to the counterweight 6 can be performed. In this case, the maintenance work related to the counterweight 6 can be efficiently performed.
The control device 20 according to embodiment 1 may be applied to an elevator having a machine room. In this case, the position of the car 5 can be maintained at a position suitable for work while ensuring the safety of the operator more reliably.
Next, an example of the control device 20 will be described with reference to fig. 12.
Fig. 12 is a hardware configuration diagram of a control device of an elevator system in embodiment 1.
The respective functions of the control device 20 can be realized by a processing circuit. For example, the processing circuitry has at least one processor 21a and at least one memory 21 b. For example, the processing circuit has at least one dedicated hardware 22.
In the case of a processing circuit having at least one processor 21a and at least one memory 21b, the respective functions of the control device 20 are implemented by software, firmware or a combination of software and firmware. At least one of the software and the firmware is described as a program. At least one of the software and the firmware is stored in the at least one memory 21 b. The at least one processor 21a reads out and executes the program stored in the at least one memory 21b, thereby realizing the respective functions of the control device 20. The at least one processor 21a is also referred to as a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, or a DSP. For example, the at least one memory 21b is a nonvolatile or volatile semiconductor memory such as a RAM, a ROM, a flash memory, an EPROM, an EEPROM, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, a DVD, or the like.
In case the processing circuit has at least one dedicated hardware 22, the processing circuit is for example realized by a single circuit, a complex circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA or a combination thereof. For example, each function of the control device 20 is realized by a processing circuit. For example, the respective functions of the control device 20 are realized collectively by a processing circuit.
The functions of the control device 20 may be partially implemented by dedicated hardware 22 and partially implemented by software or firmware. For example, the functions of the control unit 20c may be realized by a processing circuit as dedicated hardware 22, and the functions other than the functions of the control unit 20c may be realized by at least one processor 21a reading and executing a program stored in at least one memory 21 b.
In this way, the processing circuitry implements the functions of the control device 20 via hardware 22, software, firmware, or a combination thereof.
Industrial applicability
As described above, the elevator control device and the elevator system according to the present invention can be used in a system that maintains the position of the car at a position suitable for work.
Description of the reference symbols
1: a hoistway; 2: a traction machine; 3: a sheave; 4: a main rope; 5: a car; 6: a counterweight; 7: an upper side detection device; 8: a lower side detection device; 9: a car-side lift inhibitor; 9 a: cutting; 10: a car side descent control member; 10 a: cutting; 11: a weight-side-lowering inhibitor; 12: 1 st hoistway side movement inhibitor; 12 a: a through part; 13: 2 nd hoistway side movement inhibitor; 14: 3 rd hoistway side movement inhibitor; 15: a car-side contact; 15 a: a claw; 16: a counterweight-side contact; 17: 1 st well channel side switch; 18: 2 nd well channel side switch; 19: a 3 rd well side switch; 20: a control device; 20 a: a housing portion; 20 b: a detection unit; 20 c: a control unit; 21 a: a processor; 21 b: a memory; 22: hardware.
Claims (8)
1. A control device for an elevator, comprising:
a detection unit that detects that an operator is located in a car of an elevator; and
and a control unit that, when the mode of the elevator is a maintenance operation mode, causes a car-side contact provided on the car side to protrude and moves the car to a predetermined position when the detection unit detects an operator, causes a hoistway-side movement inhibitor provided on the hoistway side of the elevator to move toward the car-side contact, and causes the hoistway-side movement inhibitor to contact the car-side contact, thereby inhibiting movement of the car.
2. The control device of an elevator according to claim 1,
the control unit moves the car to a position corresponding to a device provided inside a hoistway of the elevator, and when a switch provided at the position corresponding to the device is operated, the control unit brings the hoistway-side movement suppression body into contact with the car-side contact body, thereby suppressing movement of the car.
3. The control device of an elevator according to claim 2,
the control device of the elevator comprises a casing part which contains the detection part and the control part,
the control unit moves the car to a position corresponding to the housing portion when a hoisting machine is disposed above the housing portion, and when a switch disposed at a position corresponding to the housing portion is operated from a 1 st state to a 2 nd state, the control unit brings a hoistway-side movement suppression member corresponding to the housing portion into contact with the car-side contact member to thereby suppress movement of the car, and when the switch disposed at a position corresponding to the housing portion is operated from the 2 nd state to the 1 st state, the control unit releases contact between the hoistway-side movement suppression member corresponding to the housing portion and the car-side contact member to thereby move the car to a position corresponding to the hoisting machine, and when the switch disposed at a position corresponding to the hoisting machine is operated from the 1 st state to the 2 nd state, the control unit brings the hoistway-side movement suppression member corresponding to the hoisting machine into contact with the car-side contact member, thereby inhibiting movement of the car.
4. The control device of an elevator according to claim 2,
the control device of the elevator comprises a casing part which contains the detection part and the control part,
the control portion moves the car to a position corresponding to a lower portion of the housing portion, and when a switch provided at a position corresponding to the lower portion of the housing portion is operated from a 1 st state to a 2 nd state, the control portion brings a hoistway-side movement suppression body corresponding to the lower portion of the housing portion into contact with the car-side contact body, thereby suppressing movement of the car, and when the switch provided at the position corresponding to the lower portion of the housing portion is operated from the 2 nd state to the 1 st state, the control portion releases contact of the movement suppression body corresponding to the lower portion of the housing portion with the car-side contact body, and moves the car to a position corresponding to an upper portion of the housing portion, and when the switch provided at the position corresponding to the upper portion of the housing portion is operated from the 1 st state to the 2 nd state, brings the hoistway-side movement suppression body corresponding to the upper portion of the housing portion into contact with the car-side contact body, thereby inhibiting movement of the car.
5. An elevator system, having:
a detection device for detecting an operator located in a car of an elevator;
a shaft side movement inhibitor provided on a shaft side of the elevator;
a car-side contact provided on the car side; and
and a control device that, when the mode of the elevator is a maintenance operation mode, causes the car-side contact member to protrude when the detection device detects an operator, and when the car is moved by the operation of the operator, causes the car to move to a predetermined position, causes the hoistway-side movement suppression member to move toward the car-side contact member, and causes the hoistway-side movement suppression member to contact the car-side contact member, thereby suppressing movement of the car.
6. The elevator system of claim 5,
the control device moves the car to a position corresponding to equipment arranged in the hoistway, and when a switch arranged at the position corresponding to the equipment is operated, the control device makes the hoistway side movement inhibitor contact with the car side contact body, thereby inhibiting movement of the car.
7. The elevator system of claim 6,
the control device has a housing portion constituting an outer shell, the control device moves the car to a position corresponding to the housing portion when a hoisting machine is provided above the housing portion, and when a switch provided at a position corresponding to the housing portion is operated from a 1 st state to a 2 nd state, a hoistway-side movement suppression body corresponding to the housing portion is brought into contact with the car-side contact body to thereby suppress movement of the car, and when the switch provided at a position corresponding to the housing portion is operated from the 2 nd state to the 1 st state, the control device releases the contact of the hoistway-side movement suppression body corresponding to the housing portion with the car-side contact body to move the car to a position corresponding to the hoisting machine, and when the switch provided at a position corresponding to the hoisting machine is operated from the 1 st state to the 2 nd state, and a hoistway-side movement suppression body corresponding to the hoisting machine is brought into contact with the car-side contact body, thereby suppressing movement of the car.
8. The elevator system of claim 6,
the control device has a housing portion constituting an outer shell, the control device moves the car to a position corresponding to a lower portion of the housing portion, when a switch provided at a position corresponding to the lower portion of the housing portion is operated from a 1 st state to a 2 nd state, a hoistway-side movement suppression body corresponding to the lower portion of the housing portion is brought into contact with the car-side contact body, thereby suppressing movement of the car, when the switch provided at the position corresponding to the lower portion of the housing portion is operated from the 2 nd state to the 1 st state, the contact of the movement suppression body corresponding to the lower portion of the housing portion with the car-side contact body is released, the car is moved to a position corresponding to an upper portion of the housing portion, and when the switch provided at the position corresponding to the upper portion of the housing portion is operated from the 1 st state to the 2 nd state, the movement of the car is suppressed by bringing a hoistway-side movement suppression body corresponding to an upper portion of the housing portion into contact with the car-side contact body.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2018/002410 WO2019146058A1 (en) | 2018-01-26 | 2018-01-26 | Control device and elevator system having function maintaining elevator car position at position suitable for work |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111566036A true CN111566036A (en) | 2020-08-21 |
| CN111566036B CN111566036B (en) | 2021-11-09 |
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ID=66655683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880085516.7A Active CN111566036B (en) | 2018-01-26 | 2018-01-26 | Control device having function of maintaining position of elevator car at position suitable for operation, and elevator system |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6521184B1 (en) |
| CN (1) | CN111566036B (en) |
| WO (1) | WO2019146058A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115108424A (en) * | 2021-03-17 | 2022-09-27 | 三菱电机株式会社 | Elevator car movement limiting device |
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| CN115108424B (en) * | 2021-03-17 | 2023-05-30 | 三菱电机株式会社 | Elevator car movement limiting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6521184B1 (en) | 2019-05-29 |
| CN111566036B (en) | 2021-11-09 |
| WO2019146058A1 (en) | 2019-08-01 |
| JPWO2019146058A1 (en) | 2020-02-06 |
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Address after: Tokyo, Japan Patentee after: Mitsubishi Electric Building Solutions Co.,Ltd. Address before: Tokyo, Japan Patentee before: MITSUBISHI ELECTRIC BUILDING TECHNO-SERVICE Co.,Ltd. |