WO2011027432A1 - エレベータ装置 - Google Patents
エレベータ装置 Download PDFInfo
- Publication number
- WO2011027432A1 WO2011027432A1 PCT/JP2009/065334 JP2009065334W WO2011027432A1 WO 2011027432 A1 WO2011027432 A1 WO 2011027432A1 JP 2009065334 W JP2009065334 W JP 2009065334W WO 2011027432 A1 WO2011027432 A1 WO 2011027432A1
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- WO
- WIPO (PCT)
- Prior art keywords
- car
- end region
- governor
- hoistway
- sheave
- Prior art date
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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
- 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
-
- 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
Definitions
- the present invention relates to an elevator apparatus having a car that is moved in a hoistway.
- an elevator apparatus that operates a safety device when the speed of a car exceeds a predetermined set speed has been proposed.
- the position of the car is detected from the amount of rotation of a rotating body that rotates as the car moves, and the set speed is changed according to the position of the car.
- the set speed decreases as the position of the car approaches the end of the hoistway. Thereby, size reduction of the shock absorber provided in the pit part of the hoistway can be achieved, and the height of the whole hoistway can be shortened (refer to patent documents 1).
- the position of the car is obtained from the amount of rotation of the rotating body. Therefore, when the elevator apparatus is installed, the relationship between the position of the car and the amount of rotation of the rotating body It is necessary to adjust each height individually. Therefore, it takes time to install the elevator apparatus.
- the present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevator apparatus that can be easily installed and can reduce the hoistway.
- the elevator apparatus includes a car that is provided with a detection object, a car that is moved in the hoistway, and a position switch that is provided in the hoistway and can detect the detection object.
- a car position detecting device that detects the presence or absence of a car in a predetermined region located at the terminal end of the hoistway, and a centrifugal weight that revolves around the predetermined revolution axis according to the movement of the car, A centrifugal weight is connected and is rotated around the revolution axis, and a telescopic body that is displaced with respect to the revolution axis according to the centrifugal force that the centrifugal weight receives by the revolution, and a telescopic body that is expanded and contracted, so that the car is in a predetermined area.
- a switching device that changes the length of the telescopic body to a different length depending on whether the car is out of a predetermined area or not, and the speed of the car is determined based on the amount of displacement of the telescopic body with respect to the revolution axis. Detect the presence or absence of abnormalities It is equipped with a speed machine.
- the length of the stretchable body is Since the lengths are different, the relationship between the amount of displacement of the stretchable body relative to the revolution axis and the speed of the car can be changed. Thereby, the value of the set overspeed when the car is in either the upper end area or the lower end area can be made lower than when the car is in the middle part of the hoistway.
- the car at a location near the end of the hoistway, the car can be forcibly stopped at a stage where the car speed is lower than when the car is in the middle part of the hoistway, and the car deceleration distance can be shortened. Can do. Therefore, the size of the car shock absorber and the counterweight shock absorber can be reduced, and the height of the hoistway can be reduced.
- the position switch in the hoistway, it is not necessary to adjust the relationship between the position of the car in the hoistway and the amount of movement of the car for each hoistway.
- the elevator apparatus can be easily installed simply by adjusting the position and number of position switches.
- FIG. 3 is a circuit diagram showing a state in which all of the lower position switches and the upper position switches of FIG. 2 stop detecting cams.
- 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
- It is a front view which shows the governor of FIG.
- FIG. 3 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. 1 and the position of the car. It is a partially broken front view which shows the speed governor of the elevator apparatus by Embodiment 2 of this invention. It is sectional drawing along the IX-IX line of FIG.
- 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 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 as the car 8 moves.
- the governor body 14 can grip the governor rope 16.
- 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 cam (detected body) 17 is provided 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 18 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. 19 is provided.
- the lower end car position detection device 18 has a plurality of (in this example, three) lower position switches 18a, 18b, and 18c that can detect the cam 17.
- Each of the lower position switches 18a to 18c is provided in the lower part in the hoistway 1. Further, the lower position switches 18a to 18c are arranged at intervals with respect to the moving direction of the car 8.
- the upper car position detector 19 has a plurality (three in this example) of upper position switches 19a, 19b, 19c that can detect the cam 17.
- Each of the upper position switches 19a to 19c is provided in the upper part in the hoistway 1. Further, the upper position switches 19a to 19c are arranged at intervals with respect to the moving direction of the car 8.
- the lower-end car position detecting device 18 detects the presence or absence of the car 8 in the lower-end region by detecting the presence or absence of the cam 17 by each of the lower position switches 18a to 18c.
- the upper car position detecting device 19 detects the presence or absence of the car 8 in the upper end area based on the presence or absence of the cam 17 detected by each of the upper position switches 19a to 19c.
- Intervals B between the lower position switches 18a to 18c and between the upper position switches 19a to 19c are narrower than the length A of the cam 17. As a result, it is possible to prevent a situation in which all the lower position switches 18a to 18c do not detect the cam 17 when the car 8 is moved in the lower end region. Further, it is possible to prevent the occurrence of a state in which all the upper position switches 19a to 19c do not detect the cam 17 when the car 8 is moved in the upper end region.
- the lower position switches 18a to 18c and the upper position switches 19a to 19c are connected in series by an electric wire 20.
- the electric wire 20 is connected to a communication device 21 provided in the machine room 2.
- the communication device 21 wirelessly performs information communication with the governor body 14 based on the detection states of the lower position switches 18a to 18c and the upper position switches 19a to 19c.
- a car shock absorber 22 positioned below the car 8 and a counterweight shock absorber 23 positioned below the counterweight 9 are provided at the bottom (pit portion) of the hoistway 1.
- the car shock absorber 22 reduces the impact applied to the car 8 when the car 8 receives a collision.
- the counterweight buffer 23 reduces the impact applied to the counterweight 9 when the counterweight 9 receives a collision.
- FIG. 1 shows a state where the car 8 exists in the lower end region and the two lower position switches 18a and 18b detect the cam 17 at the same time.
- FIG. 2 is a circuit diagram showing an electrical connection state of the lower position switches 18a to 18c, the upper position switches 19a to 19c and the communication device 21 of FIG.
- FIG. 3 is a circuit diagram showing a state where all of the lower position switches 18a to 18c and the upper position switches 19a to 19c of FIG.
- FIG. 2 is a diagram showing a state where only the two lower position switches 18a and 18b detect the cam 17.
- each of the lower position switches 18a to 18c and each of the upper position switches 19a to 19c has a contact that opens and closes depending on whether or not the cam 17 is detected.
- the contacts of the lower position switches 18a to 18c and the upper position switches 19a to 19c are opened when the cam 17 is detected and closed when the cam 17 is stopped.
- FIG. 4 is a longitudinal sectional view showing the governor 12 of FIG.
- FIG. 5 is a longitudinal sectional view showing the speed governor 12 when the car 8 of FIG. 1 is out of both the lower end region and the upper end region.
- FIG. 6 is a front view showing the governor 12 of FIG.
- the speed governor 12 is supported by a support 24.
- the governor body 14 is operated by the sheave interlock device 25 that is linked to the governor sheave 15 and the sheave interlock device 25 in accordance with the rotational speed of the governor sheave 15, thereby operating the elevator.
- a stop switch (overspeed detection switch) 26 for outputting a stop signal to stop the operation and a gripping device 27 (FIG. 6) for gripping the governor rope 16 when operated by the sheave interlocking device 25. ing.
- the sheave shaft 28 of the governor sheave 15 is horizontally supported by the support 24 via a bearing 29 as shown in FIGS. 4 and 5.
- a driving bevel gear 30 is fixed to the end of the sheave shaft 28.
- the sheave interlocking device 25 includes a driven shaft (predetermined revolution shaft) 31 arranged along the vertical direction, a driven bevel gear 32 that is fixed to the lower end portion of the driven shaft 31 and meshes with the drive bevel gear 30, and a driven shaft.
- a displacement body 33 that is provided on the body 31 and can be displaced with respect to the driven shaft 31 in a direction along the driven shaft 31; a centrifugal displacement device 34 that displaces the displacement body 33 according to the rotation of the driven shaft 31;
- the rotational speed of the driven shaft 31 and the amount of displacement of the displacement body 33 between when the car 8 is in either the upper end area or the lower end area or when the car 8 is out of either the upper end area or the lower end area.
- It has the switching device 35 which can set the centrifugal displacement apparatus 34 so that a relationship may differ.
- the driven shaft 31 is supported by the support 24 via a bearing 36.
- the rotation of the sheave shaft 28 is transmitted to the driven shaft 31 via the driving bevel gear 30 and the driven bevel gear 32. Accordingly, the driven shaft 31 is rotated according to the rotation of the governor sheave 15.
- the centrifugal displacement device 34 is provided on the driven shaft 31. Further, the centrifugal displacement device 34 is rotated integrally with the driven shaft 31. Further, the centrifugal displacement device 34 is connected to a pair of flyballs (centrifugal weights) 37 that revolve around the driven shaft 31 according to the rotation of the driven shaft 31, and the flyball 37 is connected, and can rotate around the driven shaft 31.
- the balance spring 41 is energized.
- Each flyball 37 receives a centrifugal force corresponding to the rotational speed of the driven shaft 31 by revolution about the driven shaft 31.
- the stretchable body 38 is displaced by rotation with respect to the driven shaft 31 in accordance with the centrifugal force received by the flyball 37.
- the sliding cylinder 39 is displaced in a direction along the driven shaft 31 in accordance with the displacement of each of the elastic bodies 38 with respect to the driven shaft 31. That is, when the rotational speed of the driven shaft 31 increases, the expansion / contraction body 38 is displaced in a direction in which the flyballs 37 are separated from each other, and the sliding cylinder 39 is displaced upward against the urging force of the balance spring 41. When the rotational speed of the driven shaft 31 decreases, the expansion / contraction body 38 is displaced in a direction in which the flyballs 37 approach each other, and the sliding cylinder 39 is displaced downward by the biasing force of the balance spring 41.
- Each elastic body 38 is a rod-shaped body.
- Each expansion body 38 includes an expansion body main body 42 that is rotatably attached to the driven shaft 31, and an actuator 43 that is provided on the expansion body main body 42 and changes the length of the expansion body 38. ing.
- the actuator 43 has a plunger 44 that can be displaced with respect to the expansion / contraction body main body 42 and an electromagnetic coil 45 that displaces the plunger 44 with respect to the expansion / contraction body main body 42.
- the flyball 37 is attached to the plunger 44.
- the plunger 44 can be displaced between an extended position (FIG. 4) that is distant from the elastic body 42 and a contracted position (FIG. 5) that is closer to the elastic body 42 than the extended position.
- the length of the stretchable body 38 changes as the plunger 44 is displaced between the extended position and the contracted position.
- the plunger 44 is displaced to the contracted position by energizing the electromagnetic coil 45, and when the energization to the electromagnetic coil 45 is stopped, the plunger 44 is displaced to the extended position by a biasing force of a biasing body (not shown).
- the displacement body 33 can be displaced together with the sliding cylinder 39. Thereby, the displacement body 33 is displaced in the direction along the driven shaft 31 according to the rotational speed of the governor sheave 15.
- the displacement body 33 is rotatable with respect to the sliding cylinder 39 and the driven shaft 31. Accordingly, the state of the displacement body 33 is maintained without being rotated even when the sliding cylinder 39 and the driven shaft 31 are rotated.
- the displacement body 33 includes a driven cylinder 46 that is slidably passed through the driven shaft 31 and an operation portion 47 that protrudes from the outer peripheral surface of the driven cylinder 46.
- the switching device 35 expands and contracts each stretchable body 38 based on information (wireless signal) from the communication device 21 to change the length of each stretchable body 38. That is, the switching device 35 receives a wireless signal from the communication device 21 (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. (Ie, when the car 8 is in either the upper end region or the lower end region), the lengths of the respective stretchable bodies 38 are set to different lengths.
- the switching device 35 increases the length of each stretchable body 38 when the car 8 is in either the upper end region or the lower end region, and the car 8 starts from either the upper end region or the lower end region.
- the length of each stretchable body 38 is shortened when it is also detached.
- the switching device 35 includes a generator 48 that generates power by the rotation of the driven shaft 31 and a switching circuit 49 that controls the power sent from the generator 48 to the electromagnetic coil 45 based on information from the communication device 21. .
- the generator 48 is provided at the upper end of the driven shaft 31.
- the generator 48 is a DC generator.
- the generator 48 includes a generator fixed shaft 50 including a permanent magnet, and a generator body 51 including a power generation coil and surrounding the generator fixed shaft 50.
- the generator fixed shaft 50 is attached to the support 24 via an attachment metal 52.
- the generator body 51 is rotated integrally with the driven shaft 31. When the generator body 51 is rotated integrally with the driven shaft 31, a current corresponding to the rotation of the driven shaft 31 is generated in the power generating coil.
- the switching circuit 49 is electrically connected to each of the generator main body 51 and the electromagnetic coil 45 by conducting wires 53 and 54. Further, the switching circuit 49 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 48, 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 45.
- the current from the generator 48 is switched only when the car 8 is out of both the upper end region and the lower end region (that is, when receiving a radio signal from the communication device 21). It is sent to the electromagnetic coil 45 by the circuit 49. Therefore, when the car 8 is in either the upper end region or the lower end region, the length of each elastic body 38 is increased, and when the car 8 is out of either the upper end region or the lower end region, each elastic body. The length of 38 is shortened.
- the stop switch 26 is disposed on the radially outer side of the driven cylinder 46.
- the stop switch 26 includes a switch main body 55 fixed to the support 24 and a switch lever 56 provided on the switch main body 55 and protruding toward the displacement body 33.
- the operation unit 47 can operate the switch lever 56 by the displacement of the displacement body 33 with respect to the stop switch 26.
- the stop switch 26 detects an abnormality in the speed of the car 8 when the switch lever 56 is operated by the operation unit 47. That is, the stop switch 26 detects the presence / absence of an abnormality in the speed of the car 8 based on the presence / absence of the detection of the displacement body 33.
- a stop signal for stopping the operation of the elevator is output from the switch body 55 when the stop switch 26 detects an abnormality in the speed of the car 8.
- the control device 6 controls the operation of the elevator based on the information from the stop switch 26.
- the control device 6 receives the stop signal from the stop switch 26, determines that an abnormality has occurred in the speed of the car 8, and performs control to stop the operation of the elevator.
- the gripping device 27 is disposed below the governor sheave 15 as shown in FIG.
- the gripping device 27 includes a fixed shoe 57 fixed to the support 24, a gripping position for gripping the governor rope 16 between the fixed shoe 57, and an open position farther from the fixed shoe 57 than the gripping position.
- a movable shoe 58 that can be displaced between the movable shoe 58 and the fixed shoe 57, and a displacement pressing device 59 that generates a gripping force for gripping the governor rope 16 between the movable shoe 58 and the fixed shoe 57.
- a holding device 60 that holds the movable shoe 58 in an open position and releases the holding of the movable shoe 58 when the speed of the car 8 reaches a second set overspeed that is higher than the first set overspeed; Yes.
- the displacement pressing device 59 is connected between the mounting portion provided on the support 24 and the movable shoe 58 and is extendable and contractible, and the shoe extending and retracting arm 61 is provided on the shoe extending and retracting arm 61 and is separated from the mounting portion of the support 24. And a pressing spring (biasing body) 62 that biases the movable shoe 58 in the direction.
- the shoe extendable arm 61 is pivotally connected to the attachment portion of the support 24 and the movable shoe 58, respectively.
- the movable shoe 58 is displaced between the gripping position and the opening position when the shoe telescopic arm 61 is rotated with respect to the attachment portion of the support 24.
- the shoe extendable arm 61 is pushed by the fixed shoe 57 and contracts when the movable shoe 58 is displaced to the gripping position.
- the shoe telescopic arm 61 extends by receiving the urging force of the pressing spring 62 when the movable shoe 58 is displaced to the open position.
- the pressing spring 62 is contracted between the mounting portion of the support 24 and the movable shoe 58.
- the pressing spring 62 is a coil spring in which the shoe telescopic arm 61 is passed. The urging force by the pressing spring 62 is further increased when the shoe telescopic arm 61 is contracted.
- the gripping force by the displacement pressing device 59 is generated when the movable shoe 58 is displaced to the gripping position and the urging force of the pressing spring 62 is increased.
- the holding device 60 is engaged with an engagement lever 63 that is displaceable between an engagement position that engages the movable shoe 58 and a release position that disengages the movable shoe 58, and an engagement lever 63 that is displaced to the release position.
- a release spring (biasing body) 64 that biases the lever 63 and a pressing member 65 that holds the engagement lever 63 at the engagement position against the biasing force of the release spring 64 are provided.
- the engagement lever 63 is displaced between the engagement position and the release position by rotating around the lever shaft 66 provided on the support 24.
- the release spring 64 is connected between the engagement lever 63 and the support 24.
- the pressing member 65 is rotatable about a support shaft 67 provided on the support 24. Further, the pressing member 65 is connected to the displacement body 33 via a link 68. Thereby, the pressing member 65 is rotated around the support shaft 67 according to the displacement of the displacement body 33.
- the link 68 is rotatably connected to each of the displacement body 33 and the pressing member 65. Further, the link 68 is displaced upward as the rotational speed of the driven shaft 31 increases.
- the engagement lever 63 is normally held at the engagement position by the pressing member 65.
- the holding member 65 is rotated in the direction in which the engagement lever 63 is released by the upward displacement of the link 68.
- the holding of the engagement lever 63 by the pressing member 65 is released when the speed of the car 8 exceeds the first set overspeed and reaches the second set overspeed.
- FIG. 7 is a graph showing the relationship between the normal operating speed, the first set overspeed, and the second set overspeed of the car 8 in FIG. 1 and the position of the car 8.
- the value of the first set overspeed 72 (the speed of the car 8 when the stop switch 26 outputs a stop signal) is the normal operation of the car 8 at all positions where the car 8 moves.
- the value is higher than the speed 71.
- the value of the second set overspeed 73 (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 72.
- the value of the first set overspeed 72 is such that the length of the stretchable body 38 changes depending on whether the car 8 is in either the upper end region or the lower end region.
- the first terminal reference value V os ′ is lower than the rated speed value V 0 of the elevator, and when the car 8 is out of either the upper end area or the lower end area.
- 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.
- the value of the second set overspeed 73 is such that the length of the stretchable body 38 changes depending on whether the car 8 is in either the upper end region or the lower end region.
- the elevator terminal has a second terminal reference value V tr ′ that is lower than the rated speed value V 0 of the elevator and higher than the first terminal reference value V os ′.
- the second intermediate reference value V tr is higher than the first intermediate reference value V os when it is out of any of the lower end regions.
- a stop signal is sent from the stop switch 26 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 38 contracts and the length of each expansion / contraction body 38 becomes short.
- the revolution radius of each flyball 37 becomes smaller, the value of the first set overspeed 72 becomes the first intermediate portion reference value Vos, and the value of the second set overspeed 73 becomes the second intermediate portion reference.
- the value V tr is assumed.
- any one of the lower position switches 18a to 18c and the upper position switches 19a to 19c detects the cam 17. To do. Thereby, the output of the radio signal from the communication device 21 is stopped, and the power supply to each electromagnetic coil 45 is stopped.
- each stretchable body 38 extends and the length of each stretchable body 38 increases. Thereby, the revolution radius of each fly ball 37 is increased, the value of the first set overspeed 72 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 73 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 72 is changed to the first end portion reference value V os by the reverse operation.
- ' Is switched to the first intermediate portion reference value V os
- the value of the second set overspeed 73 is switched from the second end portion reference value V tr' to the second intermediate portion reference value V tr .
- the car 8 can be forcibly stopped 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. Accordingly, the car shock absorber 22 and the counterweight shock absorber 23 can be reduced in size, and the height dimension of the hoistway 1 can be reduced.
- the elevator apparatus can be easily installed only by adjusting the position and number of the lower position switch and the upper position switch.
- the switching device 35 includes a generator 48 that generates electric power by the rotation of the driven shaft 31 and, when the car 8 is in either the upper end region or the lower end region of the electric power generated by the generator 48 and the car 8.
- a switching circuit 49 that sends only the electric power to the electromagnetic coil 45 at any time when it is out of these areas, so that it is necessary to newly supply power from the outside in order to change the length of the expansion / contraction body 38 Can be eliminated.
- the car 8 is in either the upper end region or the lower end region. In some cases, it is possible to prevent the lower position switches 18a to 18c and the upper position switches 19a to 19c from detecting the cam 17 from being detected. Thereby, the presence or absence of the cage
- information indicating whether the car 8 is in either the upper end region or the lower end region is sent to the switching circuit 49 by a radio signal from the communication device 21.
- Information on whether 8 is in either the upper end region or the lower end region may be sent to the switching circuit 49 by wire.
- two brushes are connected to one end and the other end of the electric wire 20, and two sliding portions that are in contact with each brush are provided on the driven shaft 31. Each sliding portion is electrically connected to the switching circuit 49.
- Information about whether the car 8 is in either the upper end region or the lower end region is sent to the switching circuit 49 via each brush and each sliding portion.
- FIG. FIG. 8 is a partially broken front view showing a speed governor for an elevator apparatus according to Embodiment 2 of the present invention.
- FIG. 9 is a cross-sectional view taken along line IX-IX in FIG.
- the support 24 is a U-shaped member having a pair of opposing walls facing each other. Bearings 29 are individually attached to the opposing walls of the support 24.
- a sheave shaft (predetermined revolution shaft) 28 of the governor sheave 15 is supported by the support 24 via each bearing 29. The governor sheave 15 and the sheave shaft 28 are rotated together as the car 8 moves.
- the speed governor sheave 15 is connected to a pair of centrifugal weights 81 that revolve around the sheave shaft 28 in response to the rotation of the sheave shaft 28, and the centrifugal weight 81.
- a pair of extendable bodies 82 that are pivotably connected to each other are supported.
- the centrifugal weight 81 receives a centrifugal force corresponding to the rotational speed of the sheave shaft 28 by revolution about the sheave shaft 28.
- the stretchable body 82 is displaced with respect to the sheave shaft 28 by the rotation about the pin 83 in accordance with the centrifugal force received by the centrifugal weight 81.
- the telescopic body 81 is displaced with respect to the sheave shaft 28 in the direction away from the sheave shaft 28, and when the rotational speed of the sheave shaft 28 decreases,
- the stretchable body 82 is displaced relative to the sheave axle 28 in a direction approaching the axle 28.
- the expansion / contraction body 82 is provided in a rotation weight portion (extension body main body) 84 that can rotate around a pin 83 provided in the governor sheave 15 and a rotation weight portion 84. And an actuator 85 for changing the height.
- the rotating weight portions 84 are connected to each other via a link member 86.
- the actuator 85 has the same configuration as the actuator 43 of the first embodiment, and has a plunger and an electromagnetic coil.
- the actuator 85 is arranged along the radial direction of the governor sheave 15.
- the centrifugal weight 81 is attached to the plunger of the actuator 85. Further, the centrifugal weight 81 is disposed on the radially outer side of the governor sheave 15 with respect to the rotating weight portion 84.
- the length of the stretchable body 82 changes when the plunger of the actuator 85 is displaced between the extended position and the contracted position.
- the length of the expansion / contraction body 82 is shortened by energization of the electromagnetic coil of the actuator 85, and is lengthened by the urging force of an urging body (not shown) when the energization of the electromagnetic coil of the actuator 85 is stopped.
- the centrifugal weight 81 is displaced with respect to the rotating weight portion 84 in a direction away from the sheave shaft 28 as the length of the telescopic body 82 becomes longer, and approaches the sheave shaft 28 as the length of the telescopic body 82 becomes shorter. It is displaced relative to the rotating weight 84 in the direction.
- the balance spring 87 which opposes the centrifugal force which the centrifugal weight 81 receives is provided.
- An operation portion (bolt in this example) 88 is fixed to the other end portion of the one rotating weight portion 84. The operating portion 88 is displaced in a direction away from the sheave shaft 28 when the rotational speed of the sheave shaft 28 increases, and is displaced in a direction approaching the sheave shaft 28 when the rotational speed of the sheave shaft 28 decreases. Further, an engaging claw 89 is provided on one rotating weight portion 84.
- the engaging claw 89 is displaced in a direction approaching the sheave shaft 28 when the rotational speed of the sheave shaft 28 increases, and is displaced in a direction away from the sheave shaft 28 when the rotational speed of the sheave shaft 28 decreases.
- the sheave axle 28 is provided with a switching device 90 that changes the length of the expansion / contraction body 82 based on information (wireless signal) from the communication device 21.
- the switching device 90 receives a wireless signal from the communication device 21 (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 (ie, When the car 8 is in either the upper end region or the lower end region), the length of the stretchable body 82 is set to a different length.
- the switching device 90 increases the length of the stretchable body 82 when the car 8 is in either the upper end region or the lower end region, and the car 8 is from either the upper end region or the lower end region.
- the length of the elastic body 82 is shortened when it is detached.
- the switching device 90 includes a generator 91 that generates power by rotating the sheave shaft 28, and a switching circuit 92 that controls electric power sent from the generator 91 to the electromagnetic coil of the actuator 85 based on information from the communication device 21. ing.
- the generator 91 has an annular generator fixing portion 93 including a permanent magnet, and an annular generator body 94 including a generator coil and surrounding the generator fixing portion 93.
- the generator fixing portion 93 is fixed to the support 24. Further, the generator fixing portion 93 surrounds the sheave shaft 28 via a gap.
- the generator body 94 is fixed to the governor sheave 15 and is rotated integrally with the governor sheave 15 and the sheave shaft 28. When the generator main body 94 is rotated, a current corresponding to the rotation of the governor sheave 15 and the sheave shaft 28 is generated in the power generating coil.
- the switching circuit 92 is fixed to the generator body 94. Therefore, the switching circuit 92 is rotated integrally with the governor sheave 15 and the sheave shaft 28.
- the switching circuit 92 is electrically connected to each of the electromagnetic coil of the actuator 85 and the generator main body 94 by a conducting wire 95.
- the switching circuit 92 has the same configuration as the switching circuit 49 of the first embodiment. Therefore, in this example, the current from the generator 91 is only when the car 8 is out of both the upper end region and the lower end region (that is, when receiving a radio signal from the communication device 21). , And sent to the electromagnetic coil of the actuator 85 by the switching circuit 92.
- a stop switch (overspeed detection switch) 96 is attached to the support 24.
- the stop switch 96 has the same configuration as the stop switch 26 of the first embodiment, and includes a switch body 55 and a switch lever 56.
- the operation unit 88 can operate the switch lever 56 by the displacement of the rotating weight unit 84 with respect to the sheave shaft 28.
- the stop switch 96 detects an abnormality in the speed of the car 8 when the switch lever 56 is operated by the operation unit 88.
- a stop signal for stopping the operation of the elevator is output from the switch body 55 when the stop switch 96 detects an abnormality in the speed of the car 8.
- the speed of the car 8 (first set overspeed) when the stop switch 96 detects an abnormality in the speed of the car 8 is that when the length of the telescopic body 82 is short due to the difference in the revolution radius of the centrifugal weight 81 (When the length of the stretchable body 82 is longer than when the car 8 is out of both the upper end region and the lower end region (when the car 8 is in either the upper end region or the lower end region). Is a lower value.
- the support 24 supports a claw wheel 97 that is rotatable about the sheave shaft 28.
- a plurality of teeth are provided on the outer periphery of the claw wheel 97.
- the claw wheel 97 is rotatable independently of the governor sheave 15.
- the engaging claw 89 is displaced in a direction approaching the outer peripheral portion of the claw wheel 97 as the rotational speed of the sheave shaft 28 increases.
- the engaging claw 89 is engaged with the outer peripheral portion of the claw wheel 97 when the speed of the car 8 reaches a second set overspeed that is higher than the first set overspeed.
- an arm 98 is rotatably provided on the support 24.
- a shoe (braking piece) 99 that is pressed against the governor sheave 15 via the governor rope 16 is rotatably provided at an intermediate portion of the arm 98.
- a spring shaft 100 is passed through the tip of the arm 98.
- An operating lever 101 is connected between one end of the spring shaft 100 and the claw wheel 97.
- the other end of the spring shaft 100 is provided with a spring receiving member 102 and a nut 103 that prevents the spring receiving member 102 from being detached from the spring shaft 100.
- a pressing spring 104 for generating a gripping force for gripping the governor rope 16 is provided between the distal end portion of the arm 98 and the spring receiving member 102.
- the gripping device that grips the governor rope 16 includes a claw wheel 97, an arm 98, a shoe 99, a spring shaft 100, an operating lever 101, a spring receiving member 102, a nut 103, and a pressing spring 104.
- the governor rope 16 is gripped between the governor sheave 15 and the shoe 99 when the shoe 99 is pressed against the governor sheave 15 via the governor rope 16.
- Other configurations are the same as those in the first embodiment.
- the values of the first and second set overspeeds can be switched by changing the length of the stretchable body 82.
- the operation for switching the first and second set overspeed values is the same as in the first embodiment.
- the switch lever 56 is operated by the operation unit 88, and a stop signal is sent from the stop switch 96 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.
- the centrifugal weight 81 is revolved around the sheave shaft 28 of the governor sheave 15, the displacement amount of the expansion body 82 with respect to the sheave shaft 28 and the sheave shaft 28 are the same as in the first embodiment. It is possible to change the relationship with the rotation speed. From this, the respective values of the first and second set overspeeds 72 and 73 when the car 8 is in either the upper end region or the lower end region can be made lower than the rated speed, and the car 8 The deceleration distance can be shortened. Accordingly, the car shock absorber 22 and the counterweight shock absorber 23 can be reduced in size, and the height dimension of 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 92 by a radio signal from the communication device 21.
- Information regarding whether 8 is in either the upper end region or the lower end region may be sent to the switching circuit 92 by wire.
- two brushes are connected to one end and the other end of the electric wire 20, and two sliding portions in contact with each brush are provided on the sheave shaft 28. Each sliding portion is electrically connected to the switching circuit 92.
- Information on whether or not the car 8 is in either the upper end region or the lower end region is sent to the switching circuit 92 via each brush and each sliding portion.
- the electric power generated with a generator is sent to an electromagnetic coil, you may make it send the electric power supplied, for example from a commercial power supply, a battery, etc. to an electromagnetic coil. .
- each value of the first and second set overspeeds 72 and 73 when the car 8 is in either the upper end region or the lower end region is the rated speed value V of the elevator.
- the value is lower than 0
- the value of the second set overspeed 73 is higher than the rated speed value V 0 of the elevator.
- Each of the first and second set overspeeds 72 and 73 may be higher than the rated speed value V 0 of the elevator.
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- 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8は、この発明の実施の形態2によるエレベータ装置の調速機を示す一部破断正面図である。また、図9は、図8のIX-IX線に沿った断面図である。図において、支持体24は、互いに対向する一対の対向壁を有する断面U字状の部材とされている。支持体24の各対向壁には、軸受29が個別に取り付けられている。調速機綱車15の綱車軸(所定の公転軸)28は、各軸受29を介して支持体24に支持されている。調速機綱車15及び綱車軸28は、かご8の移動に応じて一体に回転される。
Claims (3)
- 被検出体が設けられ、昇降路内を移動されるかご、
上記昇降路内に設けられ上記被検出体を検出可能な位置スイッチを有し、上記位置スイッチによる上記被検出体の検出の有無により、上記昇降路の終端部に位置する所定の領域での上記かごの存在の有無を検出するかご位置検出装置、及び
所定の公転軸を中心に上記かごの移動に応じて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、上記伸縮体を伸縮させて、上記かごが上記所定の領域内にあるときと上記かごが上記所定の領域から外れているときとで上記伸縮体の長さを異なる長さとする切替装置とを有し、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
を備えていることを特徴とするエレベータ装置。 - 上記伸縮体は、電力を受けることにより上記伸縮体の長さを変化させる電磁コイルを有し、
上記切替装置は、上記遠心おもりの公転に応じて発電する発電機と、上記発電機で発電された電力のうち、上記かごが上記所定の領域内にあるとき及び上記かごが上記所定の領域から外れているときのいずれかにおける電力のみを上記電磁コイルへ送るスイッチング回路とを有していることを特徴とする請求項1に記載のエレベータ装置。 - 上記かご位置検出装置は、上記かごの移動方向に沿って互いに間隔を置いて配置された複数の上記位置スイッチを有し、
各上記位置スイッチの間隔は、上記かごの移動方向に沿った上記被検出体の長さよりも狭くなってい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 (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09848963A EP2474498A1 (en) | 2009-09-02 | 2009-09-02 | Elevator apparatus |
PCT/JP2009/065334 WO2011027432A1 (ja) | 2009-09-02 | 2009-09-02 | エレベータ装置 |
KR1020127002074A KR20120030568A (ko) | 2009-09-02 | 2009-09-02 | 엘리베이터 장치 |
JP2011529723A JPWO2011027432A1 (ja) | 2009-09-02 | 2009-09-02 | エレベータ装置 |
CN2009801612055A CN102482055A (zh) | 2009-09-02 | 2009-09-02 | 电梯装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2009/065334 WO2011027432A1 (ja) | 2009-09-02 | 2009-09-02 | エレベータ装置 |
Publications (1)
Publication Number | Publication Date |
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WO2011027432A1 true WO2011027432A1 (ja) | 2011-03-10 |
Family
ID=43648993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2009/065334 WO2011027432A1 (ja) | 2009-09-02 | 2009-09-02 | エレベータ装置 |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2474498A1 (ja) |
JP (1) | JPWO2011027432A1 (ja) |
KR (1) | KR20120030568A (ja) |
CN (1) | CN102482055A (ja) |
WO (1) | WO2011027432A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9505587B2 (en) | 2010-11-01 | 2016-11-29 | Mitsubishi Electric Corporation | Elevator with acceleration detection |
US20240051793A1 (en) * | 2022-08-15 | 2024-02-15 | Otis Elevator Company | Elevator pit maintenance systems |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06263359A (ja) * | 1993-03-09 | 1994-09-20 | Toshiba Corp | エレベータガバナ |
JP2003104646A (ja) | 2001-09-28 | 2003-04-09 | Mitsubishi Electric Corp | エレベータ装置及びその制御方法 |
JP2005523859A (ja) * | 2002-04-24 | 2005-08-11 | 三菱電機株式会社 | エレベータシステムの超過速度調整装置 |
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 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001354372A (ja) * | 2000-06-14 | 2001-12-25 | Mitsubishi Electric Corp | エレベーター装置 |
-
2009
- 2009-09-02 KR KR1020127002074A patent/KR20120030568A/ko active IP Right Grant
- 2009-09-02 EP EP09848963A patent/EP2474498A1/en not_active Withdrawn
- 2009-09-02 JP JP2011529723A patent/JPWO2011027432A1/ja active Pending
- 2009-09-02 WO PCT/JP2009/065334 patent/WO2011027432A1/ja active Application Filing
- 2009-09-02 CN CN2009801612055A patent/CN102482055A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06263359A (ja) * | 1993-03-09 | 1994-09-20 | Toshiba Corp | エレベータガバナ |
JP2003104646A (ja) | 2001-09-28 | 2003-04-09 | Mitsubishi Electric Corp | エレベータ装置及びその制御方法 |
JP2005523859A (ja) * | 2002-04-24 | 2005-08-11 | 三菱電機株式会社 | エレベータシステムの超過速度調整装置 |
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 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9505587B2 (en) | 2010-11-01 | 2016-11-29 | Mitsubishi Electric Corporation | Elevator with acceleration detection |
US20240051793A1 (en) * | 2022-08-15 | 2024-02-15 | Otis Elevator Company | Elevator pit maintenance systems |
Also Published As
Publication number | Publication date |
---|---|
KR20120030568A (ko) | 2012-03-28 |
EP2474498A1 (en) | 2012-07-11 |
CN102482055A (zh) | 2012-05-30 |
JPWO2011027432A1 (ja) | 2013-01-31 |
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