Classifications

• • 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
  • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
  • B66B11/04—Driving gear ; Details thereof, e.g. seals
  • B66B11/08—Driving gear ; Details thereof, e.g. seals with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
• • 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
  • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
  • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B7/00—Other common features of elevators
  • B66B7/06—Arrangements of ropes or cables
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures

Definitions

• the present invention relates to an elevator apparatus that raises and lowers one car by a plurality of lifting machines.
• Patent Document 1 Japanese Patent Publication No. 7-42063
• the present invention has been made to solve the above-described problems, and is an elevator that can be stably stopped with a small movement of the rope position even during emergency braking while using a plurality of lifting machines.
• the object is to obtain a device.
• An elevator apparatus includes a plurality of lifting machines and driving units each having a driving sheave, an electric motor that rotates the driving sheave, and a lifting machine body that includes a lifting machine brake that brakes rotation of the driving sheave.
• the elevator apparatus includes a drive sheave, an electric motor that rotates the drive sheave, and a hoisting machine brake that brakes rotation of the drive sheave.
• a hoisting machine having a machine body, at least one main rope wound around a drive sheave, a car suspended from the main rope and lifted and lowered by the hoisting machine, a counterweight, and a main rope. It is equipped with a rope brake device for emergency stop of the car by applying power.
• the elevator apparatus is wound around a drive sheave, a drive sheave having a drive sheave, an electric motor that rotates the drive sheave, and an upper machine main body that includes an upper machine brake that brakes rotation of the drive sheave.
• a single car is moved by a plurality of hoisting machines, the hoisting machine does not have a brake, and the elevator is provided with a brake.
• FIG. 1 is a perspective view showing an elevator apparatus according to Embodiment 1 of the present invention.
• FIG. 2 is a perspective view showing an elevator apparatus according to Embodiment 2 of the present invention.
• FIG. 3 is a perspective view showing an elevator apparatus according to Embodiment 3 of the present invention.
• FIG. 4 is a perspective view showing an elevator apparatus according to Embodiment 4 of the present invention.
• FIG. 5 is a perspective view showing an elevator apparatus according to Embodiment 5 of the present invention.
• FIG. 6 is a wiring diagram showing a first wiring example of the hoisting machine brake of FIG.
• FIG. 7 is a wiring diagram showing a second wiring example of the hoisting machine brake of FIG.
• FIG. 8 is a wiring diagram showing a third wiring example of the hoisting machine brake of FIG.
• FIG. 1 is a perspective view showing an elevator apparatus according to Embodiment 1 of the present invention.
• a pair of car guide rails 2 and a pair of counterweight guide rails 3 are installed in the hoistway 1.
• the car 4 as the first lifting body is moved up and down in the hoistway 1 along the car guide rail 2.
• the counterweight 5 which is the second lifting body is moved up and down in the hoistway 1 along the counterweight guide rail 3.
• the counterweight 5 includes a counterweight main body 16 that is a lift body, a swing member (rope connection member) 17 that is swingably connected to the counterweight main body 16, and a counterweight main body 16 And a connecting member 18 for connecting the swing member 17.
• the counterweight body 16 is suspended from the swing member 17 via the connection member 18.
• connection member 18 The upper end portion of the connection member 18 is rotatably connected to the swing center of the swing member 17, that is, the swing shaft 17a.
• the peristaltic shaft 17a is parallel to the thickness direction of the counterweight body 16 and is horizontal.
• the lower end portion of the connection member 18 is connected to the center of the upper portion of the counterweight body 16.
• a swing detecting means (not shown) for detecting the swing state of the swing member 17 is provided at the upper end portion of the connecting member 18.
• an encoder is used as the swing detection means.
• first and second lifting machines 6, 7 are arranged.
• the first lifting machine 6 has a first driving sheave 8 and a first lifting machine body 9.
• the first lifting machine body 9 includes a first electric motor that rotates the first drive sheave 8 and a first lifting machine brake that controls the rotation of the first drive sheave 8.
• the second lifting machine 7 has a second drive sheave 10 and a second lifting machine body 11.
• the second hoisting machine main body 11 includes a second electric motor for rotating the second drive sheave 10 and a second drive. Includes a second lifting brake that brakes the rotation of the sheave 10.
• the first and second lifting machines 6 and 7 are arranged so that the rotation shafts of the drive sheaves 8 and 10 are horizontal.
• At least one main rope 12 is wound around the first and second drive sheaves 8, 10.
• the force 4 and the counterweight 5 are suspended in the hoistway 1 by the main rope 12, and are raised and lowered in the hoistway 1 by the driving force of the first and second lifting machines 6, 7.
• the counterweight 5 is raised and lowered in the opposite direction to the car 4.
• the main rope 12 is connected to the swing member 17 on one side of the swing shaft 17a and to the swing member 17 on the other side of the swing shaft 17a. And a second rope end 12b.
• the first and second rope ends 12a and 12b are connected to the swing member 17 at a position equidistant from the swing shaft 17a.
• first and second deflecting wheels 14, 15 for guiding the first rope end 12 a and the second rope end 12 b to the counterweight 5. Yes.
• the first and second deflecting wheels 14 and 15 are arranged so that their rotational axes are horizontal.
• a balance pulley 13 is provided that is rotatable about a horizontal rotating shaft. An intermediate portion of the main rope 12 is wound around the balance pulley 13.
• the first and second upper machines 6 and 7 are controlled by the control device 19.
• the control device 19 cancels the swing of the swing member 17, that is, returns the swing member 17 to the horizontal position. , 7 is controlled.
• an emergency stop device 20 for emergency stopping the car 4 when the speed of the force car 4 reaches a preset overspeed (eg, 1.4 times the rated speed).
• the car 4 is mounted with a pair of car-mounted brake devices 21a and 21b as a lifting device mounted brake device for emergency-stopping the car 4 under conditions different from those of the emergency stop device 20.
• the car-mounted brake devices 21a and 21b brake the car 4 by gripping the car guide rail 2.
• the force loaded brake devices 21a and 21b for example, electromagnetic brake devices are used.
• a terminal floor speed reducer and an over-limit device are provided. This usually results in the vicinity of the top floor in hoistway 1 and the bottom Near the floor, the car 4 is decelerated and stopped along a preset speed curve. However, if the speed of the car 4 deviates from the speed curve for some reason, the safety circuit in the control device 19 is shut off and an emergency stop command is output from the control device 19. Thereby, the car 4 is forcibly stopped by the car-mounted brake devices 21a and 21b irrespective of the first and second lifting machine brakes.
• the first and second hoisting machines 6, 7 are controlled by the control apparatus 19 so as to operate synchronously.
• manufacturing errors of the drive sheaves 8 and 10; slight slippage between the drive sheaves 8 and 10 and the main rope 12 that occurs during acceleration / deceleration and braking of the car 4; and the torque of the hoisting machine main bodies 9 and 11 Due to fluctuations, a slight error occurs between the traveling distance of the main rope 12 on the first drive sheave 8 side and the traveling distance of the main rope 12 on the second drive sheave 10 side with respect to the car 4.
• Such a slight error in travel distance is absorbed by the swinging (tilting) of the swinging member 17 acting as a balance-type balance mechanism.
• the hoisting machine brake is operated in an emergency and there is a difference in operation timing and braking force, there is a difference between the main rope 12 on the drive sheave 8 side and the main rope 12 on the drive sheave 10 side.
• a large mileage error occurs in a short time, and the balance type balance mechanism may not be able to absorb it. Therefore, in an emergency, the first and second lifting machine brakes are not operated, but only the car-mounted brake devices 21a and 21b are operated, and the car 4 is forcibly stopped. In this way, even when the force 4 is braked, there is no difference in the lifting distance between the main rope 12 and the car 4, so the car 4 can be stably stopped.
• the pair of car-mounted brake devices 21a and 2 lb are mechanically interlocked, the car-mounted brake devices 21a and 21b can be more reliably operated simultaneously.
• the first and second lifting machine brakes that are connected only by the car-mounted brake devices 21a and 21b may be used in combination.
• the system is composed of only the brake equipment installed in the cage without the lifting machine brake, You may also use the car-mounted brake device to stop at each floor stop. In this case, since there is no upper machine brake, the number of parts is reduced, the system is simplified, and the cost is reduced.
• the number of the lifting machines to be driven is not limited to two.
• the lifting machines may be arranged at the positions of the deflecting wheels 14, 15.
• FIG. 2 is a perspective view showing an elevator apparatus according to Embodiment 2 of the present invention.
• the counterweight 5 is equipped with a pair of counterweight-equipped brake devices 22a and 22b as lifting device mounted brake devices for emergency stop of the force 4 under different conditions from the emergency stop device 20. Yes.
• the counterweight-equipped brake devices 22a and 22b brake the counterweight 5 by gripping the counterweight guide rail 3, and thereby brake the car 4.
• Other configurations are the same as those in the first embodiment.
• FIG. 3 is a perspective view showing an elevator apparatus according to Embodiment 3 of the present invention.
• the cage 4 and the counterweight 5 are suspended by a simple 1: 1 roving method without using a pulley and a swing member. That is, the first rope end 12a is connected to the top of the car 4 and the second rope end 12b is connected to the top of the counterweight 5.
• the main rope 12 passes through the first and second drive sheaves 8, 10 in succession so that the first rope
• the first and second lifting machines 6, 7 are arranged side by side. That is, the first and second drive sheaves 8 and 10 are arranged so as to be shifted from each other in the radial direction.
• a rope brake device 23 is installed for emergency stop of the car 4 by applying a braking force to the main rope 12.
• the rope brake device 23 brakes the movement of the main rope 12 by gripping all the main ropes 12 at the same time, thereby braking the car 4.
• the car 4 in an emergency, is forcibly stopped by the rope brake device 23 regardless of the first and second lifting machine brakes.
• the difference in the braking force of the brake prevents the difference in travel distance between the main rope 12 on the drive sheave 8 side and the main rope 12 on the drive sheave 10 side. That is, the stopping distance can be controlled more stably regardless of the lifting machine brake.
• the drive sheaves 8 and 10 will idle relative to the main rope 12 even if the upper gears 6 and 7 are not stopped. 4 can be stopped more reliably.
• FIG. 4 is a perspective view showing an elevator apparatus according to Embodiment 4 of the present invention.
• the car 4 and the counterweight 5 are suspended by the 2: 1 roving method. That is, a pair of car suspension wheels 24a and 24b are mounted on the lower part of the car 4. On the top of the counterweight 5, a counterweight suspension vehicle 25 is mounted.
• the first and second rope ends 12 a and 12 b are connected to the upper part of the hoistway 1.
• the main rope 12 is wound around a force suspension wheel 24a, 24b, a second drive sheave 10, a first drive sheave 8, and a counterweight suspension wheel 25 in order from the first rope end 12a side.
• Other configurations are the same as those in the third embodiment.
• the force 4 is strengthened by the rope brake device 23 regardless of the first and second lifting machine brakes in an emergency. Because the emergency stop is forcedly stopped, the difference in travel distance between the main rope 12 on the drive sheave 8 side and the main rope 12 on the drive sheave 10 side is prevented from increasing due to the difference in the braking force of the lifting machine brake. . In other words, the stopping distance can be controlled more stably regardless of the lifting machine brake. Can do.
• the first and second hoisting machine brakes connected only by the rope brake device 23 may be used in combination.
• FIG. 5 is a perspective view showing an elevator apparatus according to Embodiment 5 of the present invention.
• the first hoisting machine 6 is provided with two first hoisting machine brakes 26 and 27.
• the second lifting machine 7 is provided with two second lifting machine brakes 28 and 29.
• FIG. 6 is a wiring diagram of the hoisting machine brakes 26 to 29 of FIG.
• the top brakes 26-29 are electromagnetic brakes that release the braking force by energizing the brake coils 26a, 27a, 28a, 29a and generate the braking force by interrupting the energization of the brake coils 26a, 27a, 28a, 29a. It is.
• the hoisting machine brakes 26-29 are provided with energization monitoring units (energization monitoring circuits) 26b, 27b, 28b, 29b that monitor the energization state of the brake coils 26a, 27a, 28a, 29a. .
• the hoisting machine brakes 26 to 29 are provided with operation monitoring units (operation monitoring circuits) 26c, 27c, 28c, and 29c for monitoring the operation position of the brake shoe.
• the operation monitoring units 26c, 27c, 28c, and 29c are provided with micro switches that are opened when the brake shoe performs a braking operation.
• All the energization monitoring units 26b, 27b, 28b, 29b and all the operation monitoring units 26c, 27c, 28c, 29c are connected to the brake safety circuit 30.
• the brake safety circuit 30 monitors the operating state of the first and second hoisting machine brakes 26 to 29, and if any of the first and second hoisting machine brakes 26 to 29 is braked, the other braking operation is performed. Let Specifically, the brake safety circuit 30 may detect all the hoisting machines when any one of the current monitoring units 26b, 27b, 28b, 29b and the operation monitoring units 26c, 27c, 28c, 29c detects a braking operation. Operate brakes 26-29.
• the brake safety circuit 30 is connected in series to the elevator safety circuit of the control device 19, and when the elevator safety circuit is shut off due to an abnormality in the elevator system, etc. ⁇ 29 is braked. [0039] In such an elevator apparatus, when one of the first and second hoisting machine brakes 26 to 29 performs a braking operation, the other braking operation is performed by one brake safety circuit 30. While using upper units 6 and 7, the stopping distance during emergency braking can be controlled more stably.
• the brake safety circuit 30 only the operation of the lifting machine brakes 26 to 29 is monitored by the brake safety circuit 30, but the car-mounted brake devices 21a and 21b of the first embodiment and the fishing of the second embodiment are monitored.
• the brake weight mounted brake device 22a, 22b, or the rope brake device 23 of Embodiments 3 and 4, etc. it is also possible to monitor and link the braking operation!
• the balance pulley brakes 31 and 32 may be provided on the balance pulley 13.
• the operation of the balance pulley brakes 31, 32 may be monitored by the brake safety circuit 30, and the braking operation may be linked with other brakes.
• the balance pulley brakes 31 and 32 are not intended to stop the rotation of the balance pulley 13, but may be braked by pressing the main rope 12 from the fixed side. 12 can be braked.
• a balance pulley brake can be added when a non-reel pulley is mounted on the counterweight side.
• the brake safety circuit 30 detects the braking operation in any one of the energization monitoring units 26b, 27b, 28b, 29b and the operation monitoring units 26c, 27c, 28c, 29c, At this time, at least one braking force of the lifting machine brake may be controlled by the brake safety circuit or the operation monitoring unit. That is, the braking force may be reduced to prevent excessive deceleration of the force. As a result, the car can be decelerated and stopped without giving an excessive impact to the car, regardless of the load balance between the force and the counterweight.
• the brake safety circuit may be provided separately for each hoist.
• a first brake safety circuit 30a corresponding to the first lifting machine 6 and a second brake safety circuit 30b corresponding to the second lifting machine 7 are used. Signals can be transmitted and received between the first and second brake safety circuits 30a and 30b.
• the brake coils 26a, 27a, 28a, 29a, the current monitoring units 26b, 27b, 28b, 29b and the operation monitoring rods 26c, 27c, 28c, 29c are all connected to the Silanole. Also good. In this case, for example, if any one of the operation monitoring units 26c, 27c, 28c, and 29c is cut off due to some abnormality, the circuit in FIG. 8 is cut off, and all the lifting machine brakes 26 to 29 are turned on. Since the braking operation is forcibly performed, a fail-safe system can be configured and the reliability can be improved.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Structural Engineering (AREA)
• Civil Engineering (AREA)
• Automation & Control Theory (AREA)
• Cage And Drive Apparatuses For Elevators (AREA)
• Maintenance And Inspection Apparatuses For Elevators (AREA)
• Lift-Guide Devices, And Elevator Ropes And Cables (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=36941003

Family Applications (1)

Country Status (5)

Cited By (6)

Families Citing this family (5)

Citations (3)

Family Cites Families (1)

• 2006
  • 2006-02-17 JP JP2007505847A patent/JPWO2006092967A1/ja active Pending
  • 2006-02-17 DE DE112006000498T patent/DE112006000498T5/de not_active Withdrawn
  • 2006-02-17 KR KR1020077015280A patent/KR20070086914A/ko not_active Application Discontinuation
  • 2006-02-17 WO PCT/JP2006/302832 patent/WO2006092967A1/ja active Application Filing
  • 2006-02-17 CN CN2006800026679A patent/CN101107191B/zh not_active Expired - Fee Related

Patent Citations (3)

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