WO2011083574A1 - エレベータ装置 - Google Patents
エレベータ装置 Download PDFInfo
- Publication number
- WO2011083574A1 WO2011083574A1 PCT/JP2010/050091 JP2010050091W WO2011083574A1 WO 2011083574 A1 WO2011083574 A1 WO 2011083574A1 JP 2010050091 W JP2010050091 W JP 2010050091W WO 2011083574 A1 WO2011083574 A1 WO 2011083574A1
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- WIPO (PCT)
- Prior art keywords
- car
- state
- elevator
- governor
- end region
- Prior art date
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Classifications
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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
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/06—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed electrical
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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
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/044—Mechanical overspeed governors
Definitions
- the present invention relates to an elevator apparatus having a car that is moved in a hoistway.
- the position of the overspeed detection switch can be changed by an electromagnetic displacement device having an electromagnetic magnet. Therefore, the electromagnetic displacement device malfunctions due to wear deterioration or the like, or the electromagnetic There is a possibility that the displacement of the overspeed detection switch may become abnormal due to power supply stoppage or the like. When such an abnormality occurs, the position of the overspeed detection switch deviates from the original position, and the operation stop speed value cannot be set to a desired value. Further, the conventional elevator apparatus as described above has a problem that the value of the emergency overspeed at which the emergency stop device is operated cannot be changed.
- the present invention has been made to solve the above-described problems, and an object of the present invention is to obtain an elevator apparatus that can detect a malfunction of a governor more reliably.
- the elevator apparatus is a car that is moved in a hoistway, a centrifugal weight that revolves around a predetermined revolution axis in accordance with the movement of the car, a centrifugal weight is connected, and is rotated around the revolution axis.
- a telescopic body that is displaced with respect to the revolving shaft according to the centrifugal force that the centrifugal weight receives by revolution, a switching device that expands and contracts the telescopic body according to the operating state of the elevator, and an extended state and a telescopic body in which the telescopic body extends.
- a speed governor that detects whether there is an abnormality in the speed of the car, based on the amount of displacement of the expansion / contraction body with respect to the revolution shaft, and an elevator A control device is provided that determines whether or not the speed governor is abnormal by comparing the operation state of the motor and the detection result of the motion detection device.
- the motion detection device detects whether the stretchable body is in the expanded state or the contracted state, so that even if the stretchable body cannot perform a normal stretching operation.
- the detection result of the motion detection device By comparing the detection result of the motion detection device and the operation state of the elevator, it is possible to detect the abnormality of the governor more reliably. Thereby, the abnormality of the governor can be detected at an early stage, and the operation of the elevator can be prevented from being continued in the state where the abnormality of the governor has occurred.
- FIG. 6 is a circuit diagram illustrating an electrical connection state of each lower position switch, each upper position switch, and the communication device of FIG. 5.
- FIG. 7 is a circuit diagram showing a state where all of the lower position switches and the upper position switches of FIG. 6 stop detecting cams.
- FIG. 5 It is a longitudinal cross-sectional view which shows the governor of FIG. It is a longitudinal cross-sectional view which shows a governor when the cage
- region. 6 is a graph showing the relationship between the normal operation speed, the first set overspeed, and the second set overspeed of the car in FIG. 5 and the position of the car.
- FIG. 1 is a block diagram showing an elevator apparatus according to Embodiment 1 of the present invention.
- a machine room 2 is provided in the upper part of the hoistway 1.
- a hoisting machine (driving device) 4 having a driving sheave 3, a deflecting wheel 5 arranged at an interval from the driving sheave 3, and a control device that controls the operation of the elevator. 6 are provided.
- a common main rope 7 is wound around the driving sheave 3 and the deflector 5.
- a car 8 and a counterweight 9 that can move up and down in the hoistway 1 are suspended from the main rope 7.
- the car 8 and the counterweight 9 are moved up and down in the hoistway 1 by the rotation of the driving sheave 3.
- the car 8 and the counterweight 9 are moved up and down in the hoistway 1, the car 8 is guided to the car guide rail (not shown), and the counterweight 9 is guided to the counterweight guide rail (not shown). Is done.
- An emergency stop device 10 that prevents the car 8 from falling is provided below the car 8.
- the emergency stop device 10 is provided with an operation arm 11.
- the emergency stop device 10 grips the car guide rail by operating the operation arm 11.
- the fall of the car 8 is prevented by gripping the car guide rail by the safety device 10.
- a governor 12 is provided in the machine room 2, and a tension wheel 13 is provided in the lower part of the hoistway 1.
- the governor 12 includes a governor body 14 and a governor sheave 15 provided in the governor body 14.
- a governor rope 16 is wound between the governor sheave 15 and the tension wheel 13.
- One end and the other end of the governor rope 16 are connected to the operation arm 11. Thereby, the governor sheave 15 and the tension wheel 13 are rotated according to the movement of the car 8.
- the governor sheave 15 and the tension wheel 13 are rotated forward when the car 8 is raised and reversed when the car 8 is lowered.
- the governor body 14 grips the governor rope 16 when the rotational speed of the governor sheave 15 reaches a predetermined set overspeed (emergency overspeed).
- the operation arm 11 is operated when the governor rope 16 is gripped by the governor body 14 and the car 8 is displaced with respect to the governor rope 16.
- a car shock absorber 17 located below the car 8 and a counterweight shock absorber 18 located below the counterweight 9 are provided.
- the car shock absorber 17 reduces the impact applied to the car 8 when the car 8 receives a collision.
- the counterweight buffer 18 softens the impact applied to the counterweight 9 when it receives a collision with the counterweight 9.
- FIG. 2 is a longitudinal sectional view showing the governor 12 of FIG.
- FIG. 3 is a longitudinal cross-sectional view which shows the state which the expansion-contraction body of the governor 12 of FIG. 2 is extended.
- FIG. 4 is a front view showing the governor 12 of FIG.
- the speed governor 12 is supported by a support 19.
- the governor body 14 is operated by the sheave interlock device 20 that is interlocked with the governor sheave 15 according to the rotational speed of the governor sheave 15 and the sheave interlock device 20 to operate the elevator.
- An overspeed detection switch 21 that outputs a stop signal to stop the operation, and a gripping device 22 (FIG. 4) that grips the governor rope 16 by being operated by the sheave interlocking device 20.
- the sheave shaft 23 of the governor sheave 15 is horizontally supported by the support 19 through a bearing 24.
- a driving bevel gear 25 is fixed to the end portion of the sheave shaft 23.
- the sheave interlocking device 20 includes a driven shaft (predetermined revolution shaft) 26 arranged along the vertical direction, a driven bevel gear 27 that is fixed to the lower end of the driven shaft 26 and meshes with the drive bevel gear 25, and a driven shaft.
- a displacement body 28 that can be displaced with respect to the driven shaft 26 in a direction along the driven shaft 26
- a centrifugal displacement device 29 that displaces the displacement body 28 according to the rotation of the driven shaft 26
- a centrifugal displacement device By switching the setting of 29 according to the operation state of the elevator, the switching device 30 for changing the relationship between the rotational speed of the driven shaft 26 and the amount of displacement of the displacement body 28, and the setting of the centrifugal displacement device 29 by the switching device 30
- An operation detection switch (operation detection device) 31 that detects a switching operation is included.
- the driven shaft 26 is supported by the support 19 through a bearing 32.
- the rotation of the sheave shaft 23 is transmitted to the driven shaft 26 via the driving bevel gear 25 and the driven bevel gear 27. Accordingly, the driven shaft 26 is rotated according to the rotation of the governor sheave 15. That is, the driven shaft 26 is rotated forward when the governor sheave 15 is rotated forward, and is rotated when the governor sheave 15 is reversed.
- the centrifugal displacement device 29 is provided on the driven shaft 26. Further, the centrifugal displacement device 29 is rotated integrally with the driven shaft 26. Further, the centrifugal displacement device 29 is connected to a pair of flyballs (centrifugal weights) 33 that revolve around the driven shaft 26 according to the rotation of the driven shaft 26, and the flyball 33, and can rotate around the driven shaft 26.
- the balance spring 37 is biased.
- Each flyball 33 receives a centrifugal force according to the rotational speed of the driven shaft 26 by revolving around the driven shaft 26.
- the telescopic body 34 is displaced by rotation with respect to the driven shaft 26 in accordance with the centrifugal force received by the flyball 33.
- the sliding cylinder 35 is displaced in a direction along the driven shaft 26 in accordance with the displacement of each expansion / contraction body 34 with respect to the driven shaft 26. That is, when the rotational speed of the driven shaft 26 increases, the expandable body 34 is displaced in a direction in which the flyballs 33 are separated from each other, and the sliding cylinder 35 is displaced upward against the urging force of the balance spring 37.
- the telescopic body 34 is displaced in the direction in which the flyballs 33 approach each other, and the sliding cylinder 35 is displaced downward by the biasing force of the balance spring 37.
- Each elastic body 34 is a rod-shaped body.
- Each expansion / contraction body 34 includes an expansion / contraction body main body 38 that is rotatably attached to the driven shaft 26, and an actuator 39 that is provided in the expansion / contraction body main body 38 and changes the length of the expansion / contraction body 34. ing.
- the actuator 39 has a plunger 40 that is displaceable with respect to the expansion / contraction body main body 38 and an electromagnetic coil 41 that displaces the plunger 40 with respect to the expansion / contraction body main body 38.
- the flyball 33 is attached to the plunger 40.
- the plunger 40 is displaceable between an extended position (FIG. 3) protruding from the elastic body 38 and a contracted position (FIG. 2) closer to the elastic body 38 than the extended position.
- the length of the stretchable body 34 changes as the plunger 40 is displaced between the extended position and the contracted position.
- the state of the stretchable body 34 changes between an expanded state in which the stretchable body 34 is stretched and a contracted state in which the stretchable body 34 is contracted due to the displacement of the plunger 40 with respect to the stretchable body main body 38.
- the state of the expansion / contraction body 34 is contracted by energization of the electromagnetic coil 41, and when the energization of the electromagnetic coil 41 is stopped, the expansion body 34 is expanded by a biasing force of a spring (biasing body) (not shown).
- the displacement body 28 can be displaced together with the sliding cylinder 35. Thereby, the displacement body 28 is displaced in the direction along the driven shaft 26 according to the rotational speed of the governor sheave 15.
- the displacement body 28 is rotatable with respect to the sliding cylinder 35 and the driven shaft 26. Therefore, the state of the displacement body 28 is maintained without being rotated even if the sliding cylinder 35 and the driven shaft 26 are rotated.
- the displacement body 28 has a driven cylinder 42 slidably passed through the driven shaft 26 and an operation portion 43 protruding from the outer peripheral surface of the driven cylinder 42.
- the switching device 30 switches the setting of the centrifugal displacement device 29 by expanding / contracting each expansion / contraction body 34 according to the operation state of the elevator specified by the moving direction of the car 8.
- the switching device 30 has a telescopic body when the moving direction of the car 8 is upward (that is, when the driven shaft 26 is rotated forward) and when it is downward (that is, when the driven shaft 26 is rotated backward). It is assumed that the state 34 is different from the extended state and the contracted state.
- the revolution radius of each flyball 33 differs depending on whether the moving direction of the car 8 is upward or downward, and the rotational speed of the driven shaft 26 and the amount of displacement of the displacement body 28 are different. The relationship becomes different.
- the switching device 30 changes the state of the telescopic body 34 to the contracted state when the moving direction of the car 8 is upward (that is, when the driven shaft 26 rotates forward), and the moving direction of the car 3 is downward.
- the state of the expandable body 34 is set to the extended state.
- the switching device 30 is an electromagnetic coil that generates only the power at the time of forward rotation or reverse rotation of the driven shaft 26 among the power generated by the rotation of the driven shaft 26 and the power generated by the generator 44. And a rectifier 45 to be sent to 41.
- the generator 44 is provided at the upper end of the driven shaft 26.
- the generator 44 is a DC generator.
- the generator 44 further includes a generator fixed shaft 46 including a permanent magnet, and a generator main body 47 including a power generation coil and surrounding the generator fixed shaft 46.
- the generator fixed shaft 46 is attached to the support 19 via a mounting metal 48.
- the generator body 47 is rotated integrally with the driven shaft 26.
- a current flows through the power generation coil.
- the direction of the current flowing through the power generation coil varies depending on the rotation direction of the driven shaft 26. That is, the generator 44 generates a positive current when the driven shaft 26 rotates in the forward direction, and generates a negative current when the driven shaft 26 rotates in the reverse direction.
- the rectifier 45 is electrically connected to each of the generator main body 47 and the electromagnetic coil 41 by conducting wires 49 and 50. Further, the rectifier 45 sends only either positive or negative current from the generator 44 to the electromagnetic coil 41. Thereby, only the electric power at the time of either forward rotation or reverse rotation of the driven shaft 26 is sent from the rectifier 45 to the electromagnetic coil 41.
- a positive current that is, only a current when the moving direction of the car 8 is upward
- the negative current is interrupted by the rectifier 45 and does not reach the electromagnetic coil 41. Accordingly, when the moving direction of the car 8 is upward, the state of each of the elastic bodies 34 is in a contracted state, and when the moving direction of the car 8 is in the downward direction, the state of each of the elastic bodies 34 is in an extended state.
- the operation detection switch 31 is provided on each of the telescopic bodies 34. Further, the operation detection switch 31 detects the switching operation of the setting of the centrifugal displacement device 29 by the switching device 30 by detecting whether the state of the expansion and contraction body 34 is the expanded state or the contracted state.
- the motion detection switch 31 includes a switch body (motion detection device body) 51 attached to the expansion / contraction body 38, a forward position protruding from the switch body 51 toward the flyball 33, and a backward movement closer to the switch body 51 than the forward position.
- a switch movable piece (movable body) 52 that can be displaced between the positions is provided.
- the switch movable piece 52 is a rod-like body arranged along the stretchable body 34.
- the switch movable piece 52 is biased to the forward position by a switch spring (biasing member) (not shown) disposed in the switch body 51.
- the switch movable piece 52 is separated from the flyball 33 when the stretchable body 34 is in the extended state. Therefore, when the state of the telescopic body 34 is the extended state, the switch movable piece 52 is displaced to the forward movement position by the urging force of the switch spring.
- the flyball 33 is displaced in a direction approaching the switch body 51.
- the switch movable piece 52 is displaced from the forward movement position to the backward movement position against the urging force of the switch spring while being pushed by the flyball 33 when the telescopic body 34 is contracted and contracted.
- the switch movable piece 52 is displaced between the forward movement position and the backward movement position in accordance with the expansion and contraction of the elastic body 34.
- the switch body 51 detects whether the stretchable body 34 is in an expanded state or a contracted state in accordance with the displacement of the switch movable piece 52. That is, the switch body 51 is in an ON state when the switch movable piece 52 is in one of the forward position and the backward position, and is in an OFF state when in the other position.
- the switch body 51 is turned on when the switch movable piece 52 is in the forward position, and is turned off when the switch movable piece 52 is in the retracted position.
- Information detected by the switch body 51 is sent from the operation detection switch 31 to the control device 6.
- the overspeed detection switch 21 is disposed on the radially outer side of the driven cylinder 42.
- the overspeed detection switch 21 includes a switch main body 53 fixed to the support body 19 and a switch lever 54 provided on the switch main body 53 and protruding toward the displacement body 28.
- the operation unit 43 can operate the switch lever 54 by the displacement of the displacement body 28 with respect to the overspeed detection switch 21.
- the overspeed detection switch 21 detects an abnormality in the speed of the car 8 when the switch lever 54 is operated by the operation unit 43. That is, the overspeed detection switch 21 detects the presence or absence of an abnormality in the speed of the car 8 based on whether or not the displacement body 28 is detected.
- a stop signal for stopping the operation of the elevator is output from the switch body 53 when the overspeed detection switch 21 detects an abnormality in the speed of the car 8.
- the control device 6 determines whether the speed governor 12 is abnormal by comparing the operation state of the elevator specified by the moving direction of the car 8 and the detection result of the operation detection switch 31. That is, the control device 6 compares the information indicating whether the moving direction of the car 8 is upward or downward with information regarding whether the operation detection switch 31 is in the ON state or the OFF state. The presence / absence of abnormality of the governor 12 is determined.
- the control device 6 determines that when the movement detection switch 31 is in the OFF state (the state of the telescopic body 34 is the contracted state) when the movement direction of the car 8 is upward, and the movement direction of the car 8 is
- the operation detection switch 31 is in the ON state (the state of the expansion / contraction body 34 is in the extended state) when it is in the downward direction, it is determined that the governor 12 is normal.
- the movement detection switch 31 is in the ON state (the state of the expansion / contraction body 34 is the extended state) when the movement direction of the car 8 is the upward direction, and the movement direction of the car 8 is the downward direction.
- the motion detection switch 31 is in an OFF state (the state of the telescopic body 34 is in a contracted state) at a certain time, it is determined that the speed governor 12 is abnormal.
- control device 6 determines that the speed governor 12 is abnormal, the control device 6 gives a warning for prompting inspection or repair by voice or display, or performs control to stop the operation of the elevator. Further, the control device 6 receives the stop signal from the overspeed detection switch 21, determines that an abnormality has occurred in the speed of the car 8, and performs control to stop the operation of the elevator. That is, the control device 6 controls the operation of the elevator based on information from each of the overspeed detection switch 21 and each operation detection switch 31.
- the gripping device 22 is disposed below the governor sheave 15 as shown in FIG.
- the gripping device 22 includes a fixed shoe 55 fixed to the support body 19, a gripping position for gripping the governor rope 16 between the fixed shoe 55, and an open position that is farther from the fixed shoe 55 than the gripping position.
- a movable shoe 56 that can be displaced between the movable shoe 56 and the fixed shoe 55, and a displacement pressing device 57 that generates a gripping force for gripping the governor rope 16 between the movable shoe 56 and the fixed shoe 55.
- a holding device 58 that holds the movable shoe 56 in the open position and releases the holding of the movable shoe 56 when the rotational speed of the driven shaft 26 reaches a second set overspeed that is higher than the first set overspeed; is doing.
- the displacement pressing device 57 is connected between the mounting portion provided on the support body 19 and the movable shoe 56 and can be extended and contracted, and the shoe extension arm 59 is provided on the shoe extension arm 59 and is separated from the mounting portion of the support body 19. And a pressing spring (biasing body) 60 that biases the movable shoe 56 in the direction.
- the shoe extension arm 59 is pivotally connected to the attachment portion of the support 19 and the movable shoe 56, respectively.
- the movable shoe 56 is displaced between the gripping position and the opening position when the shoe telescopic arm 59 is rotated with respect to the attachment portion of the support 19.
- the shoe extension arm 59 is pushed by the fixed shoe 55 and contracts when the movable shoe 56 is displaced to the gripping position. Further, the shoe extendable arm 59 extends by receiving the urging force of the pressing spring 60 when the movable shoe 56 is displaced to the open position.
- the pressing spring 60 is contracted between the mounting portion of the support 19 and the movable shoe 56.
- the pressing spring 60 is a coil spring in which a shoe extension arm 59 is passed. The urging force by the pressing spring 60 is further increased when the shoe telescopic arm 59 is contracted.
- the gripping force by the displacement pressing device 57 is generated when the movable shoe 56 is displaced to the gripping position and the urging force of the pressing spring 60 is increased.
- the holding device 58 is engaged with an engagement lever 61 that is displaceable between an engagement position that engages the movable shoe 56 and a release position where the engagement with the movable shoe 56 is released, and a direction in which the holding device 58 is displaced to the release position.
- a release spring (biasing body) 62 that biases the lever 61 and a pressing member 63 that holds the engagement lever 61 at the engagement position against the biasing force of the release spring 62 are provided.
- the engagement lever 61 is displaced between the engagement position and the release position by rotating around the lever shaft 64 provided on the support 19.
- the release spring 62 is connected between the engagement lever 61 and the support body 19.
- the pressing member 63 is rotatable about a support shaft 65 provided on the support body 19. Further, the pressing member 63 is connected to the displacement body 28 via a link 66. Thereby, the pressing member 63 is rotated around the support shaft 65 in accordance with the displacement of the displacement body 28.
- the link 66 is rotatably connected to each of the displacement body 28 and the pressing member 63. Further, the link 66 is displaced upward as the rotational speed of the driven shaft 26 increases.
- the engagement lever 61 is normally held at the engagement position by the pressing member 63.
- the pressing member 63 is rotated in a direction in which the holding of the engagement lever 61 by the pressing member 63 is released by the upward displacement of the link 66.
- the holding of the engagement lever 61 by the pressing member 63 is released when the rotational speed of the driven shaft 26 exceeds the first set overspeed and reaches the second set overspeed.
- the operation of the sheave interlocking device 20 will be described.
- the driven shaft 26 is rotated forward.
- a positive current is generated in the generator 44.
- the positive current from the generator 44 is sent to the electromagnetic coil 41 through the rectifier 45.
- the plunger 40 is displaced to a contracted position, and the state of each expansion-contraction body 34 will be in a contracted state. That is, when the moving direction of the car 8 is the upward direction, the state of each of the telescopic bodies 34 is in the contracted state, and each fly ball 33 is revolved around the driven shaft 26.
- the rotational speed of the driven shaft 26 for displacing the displacement body 28 to the position where the switch lever 54 is operated and the position where the pressing member 63 is displaced to the release position is determined by the revolution radius of each flyball 33. Since it is larger when the car 8 is lowered than when the car 8 is raised, it is lower when the car 8 is lowered than when the car 8 is raised. That is, the first and second set overspeeds are lower when the car 8 is lowered than when the car 8 is raised.
- each elastic body 34 when the state of each elastic body 34 is in a contracted state when the car 8 is rising, or when the state of each of the elastic bodies 34 is in an extended state when the car 8 is descending.
- the controller 6 determines that the speed governor 12 is normal.
- the control device 6 determines that the speed governor 12 is abnormal.
- the operation detection switch 31 detects whether the state of the expansion / contraction body 34 is in the extended state or the contraction state, the expansion / contraction body 34 cannot perform normal expansion / contraction operation. Even if it exists, abnormality of the speed governor 12 can be detected more reliably by comparing the detection result of the operation detection switch 31 with the operation state of the elevator. Thereby, the abnormality of the governor 12 can be detected at an early stage, and the operation of the elevator can be prevented from being continued in a state where the abnormality of the governor 12 has occurred.
- the operation detection switch 31 includes a switch body 51 and a switch movable piece 52 that is displaced between a forward position and a backward position according to the expansion and contraction of the expansion body 34.
- the switch body 51 includes the expansion body 34.
- the state of the stretchable body 34 is detected by the displacement of the switch movable piece 52, so that the state of the stretchable body 34 can be detected more reliably with a simple configuration. it can.
- the telescopic body 34 is expanded and contracted according to the operation state of the elevator specified by the moving direction of the car 8, and the state of the telescopic body 34 is when the moving direction of the car 8 is upward and downward.
- the revolution radius of the flyball 33 can be made different between when the car 8 is raised and when it is lowered.
- the first and second set overspeeds for detecting an abnormality in the speed of the car 8 can be individually set when the car 8 is raised and lowered.
- FIG. FIG. 5 is a block diagram showing an elevator apparatus according to Embodiment 2 of the present invention.
- a cam (detected body) 71 is provided on the side surface of the car 8 along the moving direction of the car 8.
- a predetermined lower end region located at the lower end (end portion) of the hoistway 1 and a predetermined upper end region located at the upper end portion (end portion) of the hoistway 1 are set. Yes.
- the lower end region and the upper end region are regions having a predetermined length in the moving direction of the car 8.
- a lower end car position detecting device 72 for detecting the presence / absence of the car 8 in the lower end region and an upper end car position detecting device for detecting the presence / absence of the car 8 in the upper end region. 73 is provided.
- the lower end car position detecting device 72 has a plurality of (in this example, three) lower position switches 72a, 72b, 72c capable of detecting the cam 71.
- Each of the lower position switches 72a to 72c is provided in the lower part in the hoistway 1. Further, the lower position switches 72a to 72c are arranged at intervals with respect to the moving direction of the car 8.
- the upper car position detector 73 has a plurality (three in this example) of upper position switches 73a, 73b, 73c that can detect the cam 71.
- Each of the upper position switches 73a to 73c is provided in the upper part in the hoistway 1. Further, the upper position switches 73a to 73c are arranged at intervals with respect to the moving direction of the car 8.
- the lower-end car position detecting device 72 detects the presence / absence of the car 8 in the lower-end region by detecting the presence or absence of the cam 71 by each of the lower position switches 72a to 72c.
- the upper car position detecting device 73 detects the presence or absence of the car 8 in the upper end area based on the presence or absence of the cam 71 detected by each of the upper position switches 73a to 73c.
- the distance B between the lower position switches 72a to 72c and the upper position switches 73a to 73c is smaller than the length A of the cam 71.
- the lower position switches 72a to 72c and the upper position switches 73a to 73c are connected in series by electric wires 74.
- the electric wire 74 is connected to a communication device 75 provided in the machine room 2.
- the communication device 75 wirelessly performs information communication with the governor body 14 based on the detection states of the lower position switches 72a to 72c and the upper position switches 73a to 73c.
- FIG. 5 shows a state where the car 8 exists in the lower end region, and the two lower position switches 72a and 72b detect the cam 71 at the same time.
- FIG. 6 is a circuit diagram showing an electrical connection state of the lower position switches 72a to 72c, the upper position switches 73a to 73c and the communication device 75 of FIG.
- FIG. 7 is a circuit diagram showing a state in which each of the lower position switches 72a to 72c and the upper position switches 73a to 73c of FIG.
- FIG. 6 is a diagram showing a state in which only the two lower position switches 72a and 72b detect the cam 71.
- each of the lower position switches 72a to 72c and each of the upper position switches 73a to 73c has a contact that opens and closes depending on whether or not the cam 71 is detected.
- the contacts of the lower position switches 72a to 72c and the upper position switches 73a to 73c are opened when the cam 71 is detected and closed when the cam 71 is stopped.
- FIG. 8 is a longitudinal sectional view showing the governor 12 of FIG.
- FIG. 9 is a longitudinal sectional view showing the speed governor 12 when the car 8 of FIG. 5 is out of both the lower end region and the upper end region.
- the switching device 30 switches the setting of the centrifugal displacement device 29 according to the operating state of the elevator specified by the presence or absence of the car 8 in the upper end region and the lower end region. That is, the switching device 30 is configured so that when the car 8 is in either the upper end region or the lower end region, and when the car 8 is out of either the upper end region or the lower end region, Switch settings.
- the switching device 30 changes the relationship between the rotational speed of the driven shaft 26 and the amount of displacement of the displacement body 28 by switching the setting of the centrifugal displacement device 29.
- the setting of the centrifugal displacement device 29 can be switched by extending / contracting each expansion / contraction body 34.
- the switching device 30 expands and contracts each expansion / contraction body 34 based on information (wireless signal) from the communication device 75. That is, the switching device 30 receives a wireless signal from the communication device 75 (that is, when the car 8 is out of both the upper end region and the lower end region) and does not receive a wireless signal. (I.e., when the car 8 is in either the upper end region or the lower end region), the state of the stretchable body 34 is set to a state in which the extended state and the contracted state are different from each other.
- the switching device 30 when the car 8 is in either the upper end region or the lower end region (that is, when reception of a radio signal from the communication device 75 is stopped), the switching device 30 When the car 8 is out of both the upper end region and the lower end region (that is, when a radio signal is received from the communication device 75), the state of each expansion / contraction body 34 is contracted. State.
- the switching device 30 includes a generator 44 similar to that of the first embodiment, and a switching circuit 76 that controls electric power sent from the generator 44 to the electromagnetic coil 41 based on information from the communication device 75.
- the switching circuit 76 is electrically connected to each of the generator main body 47 and the electromagnetic coil 41 by conducting wires 49 and 50. Further, the switching circuit 76 is configured such that when the car 8 is in either the upper end region or the lower end region of the electric power generated by the generator 44, and the car 8 is from either the upper end region or the lower end region. Only the electric power at any time when it is off is sent to the electromagnetic coil 41.
- the current from the generator 44 is switched only when the car 8 is out of both the upper end region and the lower end region (ie, when receiving a radio signal from the communication device 75).
- the signal is sent to the electromagnetic coil 41 by the circuit 76. Therefore, when the car 8 is in either the upper end region or the lower end region, the state of each stretchable body 34 is in the extended state, and when the car 8 is out of either the upper end region or the lower end region, each stretchable body.
- the state 34 becomes a contracted state.
- the control device 6 compares the operation state of the elevator specified by the presence or absence of the car 8 in the upper end region and the lower end region with the detection result of the operation detection switch 31, thereby controlling the speed governor. Twelve abnormalities are determined. That is, the control device 6 compares the information on whether the car 8 exists in either the upper end region or the lower end region with the information on whether the operation detection switch 31 is in the ON state or the OFF state. By doing so, the presence or absence of abnormality of the governor 12 is determined.
- the operation detection switch 31 when the operation detection switch 31 is in the OFF state (the state of the telescopic body 34 is the contracted state) when the car 8 is out of both the upper end region and the lower end region, When the motion detection switch 31 is in the ON state (the state of the telescopic body 34 is the extended state) when the car 8 is in either the upper end region or the lower end region, the speed governor 12 is normal. Make a decision. Further, the control device 6 determines that the operation detection switch 31 is in the ON state (the state of the telescopic body 34 is the extended state) when the car 8 is out of both the upper end region and the lower end region, and the car 8.
- FIG. 10 is a graph showing the relationship between the normal operation speed, the first set overspeed, and the second set overspeed of the car 8 in FIG. 5 and the position of the car 8.
- the value of the first set overspeed 78 (the speed of the car 8 when the overspeed detection switch 21 outputs a stop signal) is the normal value of the car 8 at all positions where the car 8 moves.
- the value is higher than the operation speed 77.
- the value of the second set overspeed 79 (the speed of the car 8 when the emergency stop device 10 is operated by gripping the governor rope 16 by the governor body 14) is the value at all positions where the car 8 moves.
- the value is higher than the value of the first set overspeed 78.
- the value of the first set overspeed 78 changes the state of the stretchable body 34 between the extended state and the contracted state depending on whether the car 8 is in either the upper end region or the lower end region.
- the first terminal end reference value V os ′ is lower than the rated speed value V 0 of the elevator, and the car 8 is in the upper end region and the lower end region.
- the first intermediate reference value V os (for example, a value 1.3 times the rated speed) is higher than the rated speed value V 0 of the elevator when deviating from any of them.
- the value of the second set overspeed 79 is that the state of the stretchable body 34 changes between the extended state and the contracted state depending on whether the car 8 is in either the upper end region or the lower end region.
- the second end portion reference value V tr ′ is lower than the rated speed value V 0 of the elevator and higher than the first end portion reference value V os ′ .
- the second intermediate portion reference value V tr is higher than the first intermediate portion reference value Vos .
- Other configurations are the same as those in the first embodiment.
- a stop signal is sent from the overspeed detection switch 21 to the control device 6.
- the control device 6 receives the stop signal, the operation of the elevator is forcibly stopped by the control device 6.
- each expansion / contraction body 34 contracts and the state of each expansion / contraction body 34 becomes a contraction state.
- the revolution radius of each flyball 33 becomes smaller, the value of the first set overspeed 78 becomes the first intermediate portion reference value Vos, and the value of the second set overspeed 79 becomes the second intermediate portion reference.
- the value V tr is assumed.
- any one of the lower position switches 72a to 72c and the upper position switches 73a to 73c detects the cam 71. To do. Thereby, the output of the radio signal from the communication device 75 is stopped, and the power supply to each electromagnetic coil 41 is stopped.
- each stretchable body 34 extends and the state of each stretchable body 34 becomes the stretched state.
- the revolution radius of each flyball 33 is increased, the value of the first set overspeed 78 is switched to the first end portion reference value V os ′ lower than the first intermediate portion reference value V os , and the second The value of the set overspeed 79 is switched to the second end portion reference value V tr ′ lower than the second intermediate portion reference value V tr .
- the value of the first set overspeed 78 becomes the first end portion reference value V os by the reverse operation.
- the first intermediate reference value V os is switched from “′, and the value of the second set overspeed 79 is switched from the second terminal reference value V tr ′ to the second intermediate reference value V tr .
- Information from the operation detection switch 31 is constantly sent to the control device 6.
- the presence / absence of abnormality of the governor 12 is always determined by comparing information from the operation detection switch 31 with information on the presence / absence of the car 8 in the upper end region and the lower end region. Is called.
- the controller 6 determines that the speed governor 12 is normal.
- the speed governor 12 is abnormal. Is determined by the control device 6.
- the telescopic body 34 is expanded and contracted according to the operation state of the elevator specified by the presence or absence of the car 8 in either the upper end region or the lower end region.
- the stretched state and the contracted state are different from each other.
- the revolving radius of the flyball 33 can be made different depending on the presence or absence of the car 8 in the upper end region and the lower end region.
- the first and second set overspeeds for detecting an abnormality in the speed of the car 8 can be obtained when the car 8 is in either the upper end region or the lower end region, and when the car 8 is in the upper end region or It can be set individually when it is out of any of the lower end regions. Therefore, the car 8 can be forcibly stopped at a position near the terminal part of the hoistway 1 at a stage where the speed of the car 8 is lower than when the car 8 is in the middle part of the hoistway 1. Deceleration distance can be shortened. Thereby, size reduction of the cage buffer 17 and the counterweight buffer 18 can be achieved, and the hoistway 1 can be reduced.
- information indicating whether the car 8 is in either the upper end area or the lower end area is sent to the switching circuit 76 by a radio signal from the communication device 75.
- Information on whether 8 is in either the upper end region or the lower end region may be sent to the switching circuit 76 by wire.
- two brushes are connected to one end and the other end of the electric wire 74 instead of the communication device 75, and two sliding portions that are in contact with each brush are provided on the driven shaft 26. Each sliding portion is electrically connected to the switching circuit 76.
- Information on whether the car 8 is in either the upper end region or the lower end region is sent to the switching circuit 76 via each brush and each sliding portion.
- the values of the first and second set overspeeds 78 and 79 when the car 8 is in either the upper end region or the lower end region are based on the elevator rated speed value V 0 .
- the value of the second set overspeed 79 is higher than the elevator rated speed value V 0.
- each of the first and second set overspeeds 78 and 79 may be higher than the rated speed value V 0 of the elevator.
- the electric power generated by the generator 44 is sent to the electromagnetic coil 41.
- the electric power supplied from a commercial power source or a battery is sent to the electromagnetic coil 41. May be.
- the switch movable piece 52 is separated from the flyball 33 when the state of the expansion / contraction body 34 is in the extended state, and the switch movable piece 52 is fly-off when the state of the expansion / contraction body 34 is in the contraction state.
- the switch movable piece 52 may be connected to the flyball 33 so that the switch movable piece 52 and the flyball 33 are integrally displaced.
- the switch movable piece 52 may be connected to the plunger 40. Even in this case, the switch movable piece 52 can be displaced according to the expansion and contraction of the expansion and contraction body 34.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
Description
実施の形態1.
図1は、この発明の実施の形態1によるエレベータ装置を示す構成図である。図において、昇降路1の上部には、機械室2が設けられている。機械室2内には、駆動綱車3を有する巻上機(駆動装置)4と、駆動綱車3に対して間隔を置いて配置されたそらせ車5と、エレベータの運転を制御する制御装置6とが設けられている。
図5は、この発明の実施の形態2によるエレベータ装置を示す構成図である。図において、かご8の側面には、かご8の移動方向に沿ったカム(被検出体)71が設けられている。昇降路1内には、昇降路1の下端部(終端部)に位置する所定の下端部領域と、昇降路1の上端部(終端部)に位置する所定の上端部領域とが設定されている。下端部領域及び上端部領域は、かご8の移動方向について所定の長さを持つ領域である。また、昇降路1内には、下端部領域でのかご8の存在の有無を検出する下端かご位置検出装置72と、上端部領域でのかご8の存在の有無を検出する上端かご位置検出装置73とが設けられている。
Claims (4)
- 昇降路内を移動されるかご、
上記かごの移動に応じて所定の公転軸を中心に公転する遠心おもりと、上記遠心おもりが接続され、かつ上記公転軸を中心に回転され、上記公転によって上記遠心おもりが受ける遠心力に応じて上記公転軸に対して変位される伸縮体と、エレベータの運転状態に応じて上記伸縮体を伸縮させる切替装置と、上記伸縮体が伸びた伸長状態及び上記伸縮体が縮んだ収縮状態のいずれの状態であるかを検出する動作検出装置とを有し、上記公転軸に対する上記伸縮体の変位量に基づいて、上記かごの速度の異常の有無を検出する調速機、及び
上記エレベータの運転状態と上記動作検出装置の検出結果とを比較することにより、上記調速機の異常の有無を判定する制御装置
を備えていることを特徴とするエレベータ装置。 - 上記動作検出装置は、上記伸縮体に設けられた動作検出装置本体と、上記動作検出装置本体から突出する前進位置と上記前進位置よりも上記動作検出装置本体に近い後退位置との間で変位可能な可動体とを有し、
上記可動体は、上記伸縮体の伸縮に応じて上記前進位置と上記後退位置との間を変位され、
上記動作検出装置本体は、上記伸長状態及び上記収縮状態のいずれの状態であるかを上記可動体の変位によって検出することを特徴とする請求項1に記載のエレベータ装置。 - 上記エレベータの運転状態は、上記かごの移動方向によって特定され、
上記切替装置は、上記かごの移動方向が上方向であるときと下方向であるときとで、上記伸縮体の状態を上記伸長状態及び上記収縮状態の互いに異なる状態とすることを特徴とする請求項1又は請求項2に記載のエレベータ装置。 - 上記エレベータの運転状態は、上記昇降路内に設定された所定の領域での上記かごの存在の有無によって特定され、
上記切替装置は、上記所定の領域に上記かごが存在するときと上記所定の領域から上記かごが外れているときとで、上記伸縮体の状態を上記伸長状態及び上記収縮状態の互いに異なる状態とすることを特徴とする請求項1又は請求項2に記載のエレベータ装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20100842091 EP2522613A1 (en) | 2010-01-07 | 2010-01-07 | Elevator device |
CN2010800607245A CN102695666A (zh) | 2010-01-07 | 2010-01-07 | 电梯装置 |
KR1020127013333A KR20120069780A (ko) | 2010-01-07 | 2010-01-07 | 엘리베이터 장치 |
PCT/JP2010/050091 WO2011083574A1 (ja) | 2010-01-07 | 2010-01-07 | エレベータ装置 |
US13/501,360 US20120199422A1 (en) | 2010-01-07 | 2010-01-07 | Elevator apparatus |
JP2011548888A JPWO2011083574A1 (ja) | 2010-01-07 | 2010-01-07 | エレベータ装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2010/050091 WO2011083574A1 (ja) | 2010-01-07 | 2010-01-07 | エレベータ装置 |
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WO2011083574A1 true WO2011083574A1 (ja) | 2011-07-14 |
Family
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PCT/JP2010/050091 WO2011083574A1 (ja) | 2010-01-07 | 2010-01-07 | エレベータ装置 |
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US (1) | US20120199422A1 (ja) |
EP (1) | EP2522613A1 (ja) |
JP (1) | JPWO2011083574A1 (ja) |
KR (1) | KR20120069780A (ja) |
CN (1) | CN102695666A (ja) |
WO (1) | WO2011083574A1 (ja) |
Cited By (1)
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JP2017186134A (ja) * | 2016-04-07 | 2017-10-12 | フジテック株式会社 | エレベータの調速機 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2319793B1 (de) * | 2009-11-10 | 2012-01-25 | ThyssenKrupp Elevator AG | Auslösevorrichtung für einen Geschwindigkeitsbegrenzer einer Aufzugsanlage |
EP3006386B1 (en) * | 2013-06-07 | 2021-10-06 | Otis Elevator Company | Elevator with low overhead and low pit |
CN109092575B (zh) * | 2018-09-19 | 2024-01-30 | 中国工程物理研究院总体工程研究所 | 基于回转中心位置调整的离心机配平装置及方法 |
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JPH06263359A (ja) * | 1993-03-09 | 1994-09-20 | Toshiba Corp | エレベータガバナ |
JP2000327241A (ja) * | 1999-05-17 | 2000-11-28 | Mitsubishi Electric Corp | エレベータ装置および調速装置 |
WO2008047425A1 (fr) * | 2006-10-18 | 2008-04-24 | Mitsubishi Electric Corporation | Commande de vitesse d'ascenseur et dispositif ascenseur |
WO2009093330A1 (ja) * | 2008-01-25 | 2009-07-30 | Mitsubishi Electric Corporation | エレベータ装置 |
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JPH0543150A (ja) * | 1991-08-20 | 1993-02-23 | Hitachi Ltd | エレベータ |
JP4009500B2 (ja) * | 2001-08-03 | 2007-11-14 | 東芝エレベータ株式会社 | エレベータおよびエレベータの調速機 |
CN101678999B (zh) * | 2007-08-09 | 2012-05-23 | 三菱电机株式会社 | 电梯的限速器 |
KR101201617B1 (ko) * | 2009-04-09 | 2012-11-14 | 미쓰비시덴키 가부시키가이샤 | 엘리베이터용 조속기 |
US20150014100A1 (en) * | 2012-03-06 | 2015-01-15 | Mitsubishi Electric Corporation | Elevator governor and elevator device |
-
2010
- 2010-01-07 US US13/501,360 patent/US20120199422A1/en not_active Abandoned
- 2010-01-07 KR KR1020127013333A patent/KR20120069780A/ko active IP Right Grant
- 2010-01-07 WO PCT/JP2010/050091 patent/WO2011083574A1/ja active Application Filing
- 2010-01-07 EP EP20100842091 patent/EP2522613A1/en not_active Withdrawn
- 2010-01-07 JP JP2011548888A patent/JPWO2011083574A1/ja not_active Withdrawn
- 2010-01-07 CN CN2010800607245A patent/CN102695666A/zh active Pending
Patent Citations (4)
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JPH06263359A (ja) * | 1993-03-09 | 1994-09-20 | Toshiba Corp | エレベータガバナ |
JP2000327241A (ja) * | 1999-05-17 | 2000-11-28 | Mitsubishi Electric Corp | エレベータ装置および調速装置 |
WO2008047425A1 (fr) * | 2006-10-18 | 2008-04-24 | Mitsubishi Electric Corporation | Commande de vitesse d'ascenseur et dispositif ascenseur |
WO2009093330A1 (ja) * | 2008-01-25 | 2009-07-30 | Mitsubishi Electric Corporation | エレベータ装置 |
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JP2017186134A (ja) * | 2016-04-07 | 2017-10-12 | フジテック株式会社 | エレベータの調速機 |
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KR20120069780A (ko) | 2012-06-28 |
EP2522613A1 (en) | 2012-11-14 |
JPWO2011083574A1 (ja) | 2013-05-13 |
CN102695666A (zh) | 2012-09-26 |
US20120199422A1 (en) | 2012-08-09 |
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