CN101827771B - Elevator device - Google Patents

Elevator device Download PDF

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Publication number
CN101827771B
CN101827771B CN 200780101121 CN200780101121A CN101827771B CN 101827771 B CN101827771 B CN 101827771B CN 200780101121 CN200780101121 CN 200780101121 CN 200780101121 A CN200780101121 A CN 200780101121A CN 101827771 B CN101827771 B CN 101827771B
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CN
China
Prior art keywords
slippage
car
value
suspension
threshold
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CN 200780101121
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Chinese (zh)
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CN101827771A (en
Inventor
冈田大辅
木川弘
上田隆美
丸山直之
钉谷琢夫
Original Assignee
三菱电机株式会社
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Application filed by 三菱电机株式会社 filed Critical 三菱电机株式会社
Priority to PCT/JP2007/074410 priority Critical patent/WO2009078100A1/en
Publication of CN101827771A publication Critical patent/CN101827771A/en
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Publication of CN101827771B publication Critical patent/CN101827771B/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/04Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
    • B66B5/06Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed electrical
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/12Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of rope or cable slack
    • B66B5/125Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of rope or cable slack electrical

Abstract

In an elevator device, an emergency stop device performs emergency stop of a car in response to an operating signal. A slip monitoring device calculates a slip extent value that is a value associated with a slip extent of a suspension body with respect to a drive sheave based on signals from first and second speed detectors. Moreover, the slip monitoring device stops the car at a prescribed floor by a winding machine when the slip extent value exceeds a first threshold while operates the emergency stop device according to an operating signal when the slip extent value exceeds a second threshold.

Description

Lift appliance
Technical field
The present invention relates to lift appliance, it detects the slippage of the relative traction sheave of suspension body, and car is stopped.
Background technology
In the fender guard of in the past elevator; instruction gait of march according to rotative speed and the speed command generation device of the pulley of following advancing of car to rotate; detect the slippage of the relative rope sheave of drag rope; when sliding velocity surpasses setting value, make rope sheave emergent stopping (for example with reference to patent documentation 1).
In addition, in the safety catch of in the past elevator, when the car speed that is detected by speed sensor surpasses threshold value, produce cranking signal by safety control.After producing cranking signal, friction brake is pressed against on the guide rail, and car is braked (for example with reference to patent documentation 2).
Patent documentation 1: Japanese kokai publication sho 59-230981 communique
Patent documentation 2: Japanese Unexamined Patent Application Publication 2002-532366 communique
In aforesaid elevator protection device and safety catch in the past, can not the slower rope slippage of detection speed, might produce because of and rope sheave between shortening or the rope fracture in accumulation friction rope life-span of causing.
Summary of the invention
The present invention proposes in order to solve above-mentioned problem, its purpose is, a kind of lift appliance is provided, can suppresses the suspension body damage that the excessive slippage because of the relative traction sheave of suspension body causes, can prevent the accumulated damage of the suspension body that the small slippage because of suspension body causes simultaneously.
Lift appliance of the present invention has: towing machine, and it has traction sheave; Suspension body, it is wound onto on the traction sheave; Car, it is being hung by suspension body, and by towing machine and lifting; Emergency braking device, it is installed on the car, makes the car emergent stopping according to working signal; The 1st speed detector, it produces the signal corresponding with the rotative speed of towing machine; The 2nd speed detector, it produces the signal corresponding with the gait of march of car; And slippage monitor unit, it is according to the signal from the 1st and the 2nd speed detector, the numerical value that computing is relevant with the slippage degree of the relative traction sheave of suspension body is the slippage degree value, when the slippage degree value surpasses the 1st threshold value, utilize towing machine to make car rest in predetermined floor, surpass with greater than the 2nd threshold value corresponding to the slippage degree of the 1st threshold value the time in the slippage degree value, utilize working signal to make emergency braking device work.
Description of drawings
Fig. 1 is the constructional drawing of the lift appliance of expression embodiments of the present invention 1.
Fig. 2 is the block scheme of the main portion of expression lift appliance shown in Figure 1.
Fig. 3 is the diagram of circuit of the action of expression slippage detection unit shown in Figure 2.
Fig. 4 is the block scheme of main portion of the lift appliance of expression embodiments of the present invention 2.
Fig. 5 is the diagram of circuit of the action of expression slippage detection unit shown in Figure 4.
Fig. 6 is the block scheme of main portion of the lift appliance of expression embodiments of the present invention 3.
Fig. 7 is the diagram of circuit of the action of expression slippage detection unit shown in Figure 6.
The specific embodiment
Below, with reference to description of drawings preferred implementation of the present invention.
Embodiment 1
Fig. 1 is the constructional drawing of the lift appliance of expression embodiments of the present invention 1.In the drawings, be provided with towing machine 1 on the top of hoistway.Towing machine 1 has electrical motor 2, the traction sheave 3 that rotates by electrical motor 2 and the traction machine brake 4 that the rotation of traction sheave 3 is braked.In this example, traction sheave 3 directly is connected with the S. A. of electrical motor 2, and rotates with the rotor of electrical motor 2.When usually turning round, traction machine brake 4 keeps their halted states (static maintenance) when the rotation of electrical motor 2 and traction sheave 3 stops.
Be provided with the 1st speed detector 5 at towing machine 1, it produces with the rotative speed of towing machine 1, is signal corresponding to the rotative speed of traction sheave 3.The 1st speed detector 5 for example can use the coder (towing machine coder) on the S. A. of being located at electrical motor 2.
Near towing machine 1, be provided with deflector wheel 6.Suspension body 7 is wound onto on traction sheave 3 and the deflector wheel 6.Suspension body 7 comprises many main ropes.And, the band that main rope for example can use the rounded rope in cross section or have flat cross section.
Car 8 is connected with the 1st end of suspension body 7.Counterweight 9 is connected with the 2nd end of suspension body 7.That is, car 8 and counterweight 9 are suspended in the hoistway by suspension body 7, and by towing machine 1 and lifting.In hoistway, be provided with: a pair of car guide rail 10, the lifting of its guiding car 8; With a pair of counter weight guide track (not shown), the lifting of its guiding counterweight 9.
In the bottom of car 8 emergency braking device 11 is installed, it engages with car guide rail 10, makes car 8 emergent stoppings.Emergency braking device 11 has emergent stopping drive division 11a, and it is used for making emergency braking device 11 work according to the electrical installation signal.Emergent stopping drive division 11a for example can use electromagnetic actuators.
Be provided with governor 12 on the top of hoistway.Governor 12 has governor rope sheave 13 and rope holding device 14.Speed controller rope 15 volumes hang on the governor rope sheave 13.The both ends of speed controller rope 15 are connected with emergency braking device 11 by pitman 16.The bottom volume of speed controller rope 15 hangs on the tension wheel 17 of being located at the hoistway bottom.
Speed controller rope 15 is followed the lifting of car 8 and is circulated.Thus, governor rope sheave 13 is with the speed rotation corresponding with the gait of march of car 8.Reach the predefined the 1st when overrunning in the gait of march of car 8, detect this situation by governor 12, by towing machine 1 car 8 is stopped rapidly.At this moment, the energising of electrical motor 2 is cut off, utilizes simultaneously the rotation of 4 pairs of electrical motors 2 of traction machine brake and traction sheave 3 to carry out friction braking.
And, when reaching and the predefined the 2nd to overrun (the 2nd overrun>the 1st overrun) in the gait of march of car 8, detecting this situation by governor 12, speed controller rope 15 is controlled by rope holding device 14, and the circulation of speed controller rope 15 stops.Thus, mechanically operate emergency braking device 11 by pitman 16, utilize emergency braking device 11 to make car 8 emergent stoppings.
Be provided with the 2nd speed detector 18 at governor 12, it produces the signal corresponding with the rotative speed of governor rope sheave 13, the i.e. signal corresponding with the gait of march of car 8.The 2nd speed detector 18 for example can use the coder (governor coder) on the S. A. of being located at governor rope sheave 13.
Be imported into emergent stopping work order device 19 as the slippage monitor unit from the 1st and the 2nd speed detector 5,18 signal.Emergent stopping work order device 19 is according to from the 1st and the 2nd speed detector 5,18 signal, and computing is the slippage degree value with the numerical value that the slippage degree of suspension body 7 relative traction sheaves 3 is correlated with.In embodiment 1, the sliding velocity of emergent stopping work order device 19 computing suspension bodies 7 relative traction sheaves 3 is as the slippage degree value.
And when the sliding velocity of suspension body 7 surpassed the 1st threshold speed (the 1st threshold value), emergent stopping work order device 19 made car 8 rest in predetermined floor by towing machine 1.In addition, when the sliding velocity of suspension body 7 surpassed the 2nd threshold speed (the 2nd threshold value) greater than the 1st threshold speed, emergent stopping work order device 19 was to emergent stopping drive division 11a output services signal.
Fig. 2 is the block scheme of the main portion of expression lift appliance shown in Figure 1.Emergent stopping work order device 19 has sliding velocity operational part 20 and slippage detection unit 21.Sliding velocity operational part 20 is according to from the 1st and the 2nd speed detector 5,18 signal, the sliding velocity of computing suspension body 7 relative traction sheaves 3.Specifically, the detection speed of the 1st speed detector 5 is being made as V1, when the detection speed of the 2nd speed detector 18 is made as V2, utilizing δ V=|V1-V2| to obtain sliding velocity δ V.
The information of the operation result of sliding velocity operational part 20 and relevant elevator working condition is transfused to slippage detection unit 21.The information of relevant elevator working condition comprises the information that whether produced washout, is the information whether traction machine brake 4 is carrying out the emergency braking action.Slippage detection unit 21 will be compared by sliding velocity and the 1st and the 2nd threshold speed that sliding velocity operational part 20 is obtained, according to comparative result and elevator working condition, to various safety device operate portions 22 output commands.
Wherein, emergent stopping work order device 19 for example has microcomputer.The functional utilization microcomputer of sliding velocity operational part 20 and slippage detection unit 21 is realized.And, in the storage part of microcomputer, store the program for the function that realizes sliding velocity operational part 20 and slippage detection unit 21.
Fig. 3 is the diagram of circuit of the action of expression slippage detection unit 21 shown in Figure 2.Slippage detection unit 21 at first is determined with without washout (step S1).In the situation that do not produce washout, judge whether sliding velocity surpasses the 1st threshold speed Va (step S2).If sliding velocity is below the 1st threshold speed Va, then continue usually running.
In the situation that sliding velocity surpasses the 1st threshold speed Va, the cumulative number C1+1 that surpasses the 1st threshold speed Va is counted (step S3), produce designated floor and stop instruction (step S4).After producing designated floor stop instruction, car 8 moves to predetermined floor and rests against this.Make floor that car 8 stops such as being the predefined floor such as entrance hall floor or nearest floor.
After the output designated floor was stopped instruction, slippage detection unit 21 judged whether sliding velocity surpasses the 2nd threshold speed Vb (step S5).In the situation that sliding velocity surpasses the 2nd threshold speed Vb, produce towing machine emergent stopping instruction and emergent stopping work order (working signal), in order to suppress the damage (step S6) of suspension body 7.After producing the instruction of towing machine emergent stopping, the energising of electrical motor 2 is cut off, utilize the rotation of 4 pairs of traction sheaves 3 of traction machine brake to brake.And, after producing the emergent stopping work order, by emergent stopping drive division 11a emergency braking device 11 is carried out braking maneuver.
On the other hand, in the situation that sliding velocity does not surpass the 2nd threshold speed Vb, judge whether cumulative number C1 surpasses predefined specified value α (step S7).In the situation that C1 is below the α, after car 8 rested against designated floor, the running of car 8 reverted to common running.And, in the situation that C1 surpasses α, be judged to be and might after car 8 rests against designated floor, produce emergent stopping work order (step S8) in the damage of accumulating suspension body 7, wait for that service personnel carries out Maintenance and Repair.
More than be the action when not producing washout, in the situation that produce washout, judge at first also whether sliding velocity surpasses the 1st threshold speed Va (step S9).If sliding velocity is below the 1st threshold speed Va, judge then whether sliding velocity surpasses the 2nd threshold speed Vb (step S11).
And, in the situation that sliding velocity surpasses the 1st threshold speed Va, cumulative number C1+1 is counted (step S10), judge then whether sliding velocity surpasses the 2nd threshold speed Vb (step S11).
In the situation that sliding velocity surpasses the 2nd threshold speed Vb, produce emergent stopping work order (step S12), in order to suppress the damage of suspension body 7.In the situation that sliding velocity does not surpass the 2nd threshold speed Vb, judge whether cumulative number C1 has surpassed predefined specified value α (step S13).In the situation that C1 is below the α, the state that emergency braking device 11 maintenances are failure to actuate, and wait is according to the recovery of the emergent stopping state of washout.And in the situation that C1 surpasses α, being judged to be might be in the damage of accumulating suspension body 7, thereby behind the emergent stopping based on towing machine 1, produces emergent stopping work order (step S14), waits for that service personnel carries out Maintenance and Repair.
Emergent stopping work order device 19 is periodically implemented above-mentioned acts of determination according to the predetermined cycle.
In this lift appliance, according to from the 1st and the 2nd speed detector 5,18 signal, the sliding velocity of computing suspension body 7 relative traction sheaves 3, when sliding velocity surpasses the 1st threshold speed Va, make car 8 rest in designated floor by towing machine 1, when sliding velocity surpasses the 2nd threshold speed Vb, to emergent stopping drive division 11a output services signal, make emergency braking device 11 actions, so can suppress the damage of the suspension body 7 that the excessive slippage because of suspension body 7 relative traction sheaves 3 causes, can prevent the cumulative bad damage of the suspension body 7 that the small slippage because of suspension body 7 causes simultaneously.
And, carry out at traction machine brake 4 that sliding velocity surpasses in the situation of the 1st threshold speed Va in the process of emergency braking action, make the emergency braking action of traction machine brake 4 have precedence over designated floor and stop action, so can improve reliability.
In addition, when the number of times C1 that surpasses the 1st threshold speed Va in sliding velocity surpasses predefined specified value α, make car 8 rest in predetermined floor, then make emergency braking device 11 actions, so can detect as early as possible the accumulated damage that results from small slippage of suspension body 7, can prevent that the service of lift appliance from descending.
In addition, the number of times C1 that sliding velocity surpasses the 1st threshold speed Va is expression cumulative bad slippage numberical value of quantity, for example can be the aggregate-value of sliding velocity δ V.During this situation, for example when the aggregate-value of the sliding velocity δ V that surpasses the 1st threshold speed Va surpasses predefined specified value, make car 8 rest in predetermined floor, then make emergency braking device 11 actions.
Embodiment 2
Below, Fig. 4 is the block scheme of main portion of the lift appliance of expression embodiments of the present invention 2.In embodiment 2, the skidding distance of emergent stopping work order device 19 computing suspension bodies 7 relative traction sheaves 3 is as the slippage degree value.And when the skidding distance of suspension body 7 surpassed the 1st distance threshold (the 1st threshold value), emergent stopping work order device 19 made car 8 rest in predetermined floor by towing machine 1.In addition, when the skidding distance of suspension body 7 surpassed the 2nd distance threshold (the 2nd threshold value) greater than the 1st distance threshold, emergent stopping work order device 19 was to emergent stopping drive division 11a output services signal.
In addition, emergent stopping work order device 19 has skidding distance operational part 23 and slippage detection unit 21.Skidding distance operational part 23 is according to from the 1st and the 2nd speed detector 5,18 signal, the skidding distance of computing suspension body 7 relative traction sheaves 3.
Specifically, the detection speed of the 1st speed detector 5 is made as V1, the detection speed of the 2nd speed detector 18 be made as V2, when the time of the certain distance of advancing is made as Δ t, utilize δ X=∫ | V1-V2|dt or δ X=∫ | V1-V2| Δ t, obtain skidding distance δ X.
And skidding distance operational part 23 makes skidding distance δ X revert to initial value whenever car 8 starting the time.At this, skidding distance operational part 23 carries out the reseting of skidding distance δ X of output before car 8 is about to begin to advance from common halted state.Thus, prevent from being attended by the misoperation of deviation accumulation.
Slippage detection unit 21 will be compared by skidding distance and the 1st and the 2nd distance threshold that skidding distance operational part 23 is obtained, according to comparative result and elevator working condition, to various safety device operate portions 22 output commands.
Wherein, emergent stopping work order device 19 for example has microcomputer.The functional utilization microcomputer of skidding distance operational part 23 and slippage detection unit 21 is realized.And, in the storage part of microcomputer, store the program for the function that realizes skidding distance operational part 23 and slippage detection unit 21.Other structures are identical with embodiment 1.
Fig. 5 is the diagram of circuit of the action of expression slippage detection unit 21 shown in Figure 4.Slippage detection unit 21 at first is determined with without washout (step S21).In the situation that do not produce washout, judge whether skidding distance surpasses the 1st distance threshold Xa (step S22).If skidding distance is below the 1st distance threshold Xa, then continue usually running.
In the situation that skidding distance surpasses the 1st distance threshold Xa, the cumulative number C2+1 that surpasses the 1st distance threshold Xa is counted (step S23), produce designated floor and stop instruction (step S24).After producing designated floor stop instruction, car 8 moves to predetermined floor and rests against this.The floor that car 8 is stopped is such as being the predefined floor such as entrance hall floor or nearest floor.
After the output designated floor was stopped instruction, slippage detection unit 21 judged whether skidding distance surpasses the 2nd distance threshold Xb (step S25).In the situation that skidding distance surpasses the 2nd distance threshold Xb, produce towing machine emergent stopping instruction and emergent stopping work order (working signal), in order to suppress the damage (step S26) of suspension body 7.After producing the instruction of towing machine emergent stopping, the energising of electrical motor 2 is cut off, utilize the rotation of 4 pairs of traction sheaves 3 of traction machine brake to brake.And, after producing the emergent stopping work order, by emergent stopping drive division 11a emergency braking device 11 is carried out braking maneuver.
On the other hand, in the situation that skidding distance does not surpass the 2nd distance threshold Xb, judge whether cumulative number C2 surpasses predefined specified value β (step S27).In the situation that C2 is below the β, after car 8 rested against designated floor, the running of car 8 reverted to common running.And, in the situation that C2 surpasses β, be judged to be the damage accumulation that might cause suspension body 7, after car 8 rests against designated floor, produce emergent stopping work order (step S28), wait for that service personnel carries out Maintenance and Repair.
More than be the action when not producing washout, but in the situation that produced washout, judge at first also whether skidding distance surpasses the 1st distance threshold Xa (step S29).If skidding distance is below the 1st distance threshold Xa, judge then whether skidding distance surpasses the 2nd distance threshold Xb (step S31).
And, in the situation that skidding distance surpasses the 1st distance threshold Xa, cumulative number C2+1 is counted (step S30), judge then whether skidding distance surpasses the 2nd distance threshold Xb (step S31).
In the situation that skidding distance surpasses the 2nd distance threshold Xb, produce emergent stopping work order (step S32), in order to suppress the damage of suspension body 7.In the situation that skidding distance does not surpass the 2nd distance threshold Xb, judge whether cumulative number C2 surpasses predefined specified value β (step S33).In the situation that C2 is below the β, the state that emergency braking device 11 maintenances are failure to actuate, and wait is according to the recovery of the emergent stopping state of washout.And, in the situation that C2 surpasses β, be judged to be the damage accumulation that might cause suspension body 7, behind towing machine 1 emergent stopping, produce emergent stopping work order (step S34), wait for that service personnel carries out Maintenance and Repair.
Emergent stopping work order device 19 is periodically implemented above-mentioned acts of determination according to the predetermined cycle.
In this lift appliance, according to from the 1st and the 2nd speed detector 5,18 signal, the skidding distance of computing suspension body 7 relative traction sheaves 3, when skidding distance surpasses the 1st distance threshold Xa, make car 8 rest in designated floor by towing machine 1, when skidding distance surpasses the 2nd distance threshold Xb, to emergent stopping drive division 11a output services signal, make emergency braking device 11 actions, so can suppress the damage of the suspension body 7 that the excessive slippage because of suspension body 7 relative traction sheaves 3 causes, can prevent the accumulated damage of the suspension body 7 that the small slippage because of suspension body 7 causes simultaneously.
And, carry out in the process of emergency braking action at traction machine brake 4, in the situation that skidding distance surpasses the 1st distance threshold Xa, make the emergency braking action of traction machine brake 4 have precedence over designated floor stop action, so can improve reliability.
In addition, when the number of times C1 that surpasses the 1st distance threshold Xa at skidding distance surpasses predefined specified value β, make car 8 rest in predetermined floor, then make emergency braking device 11 actions, so can detect as early as possible the accumulated damage that results from small slippage of suspension body 7, can prevent that the service of lift appliance from descending.
In addition, the number of times C1 that skidding distance surpasses the 1st distance threshold Xa is expression accumulation slippage numberical value of quantity, for example can be the aggregate-value of skidding distance δ X.During this situation, for example when the aggregate-value of the skidding distance δ X that surpasses the 1st distance threshold Xa surpasses predefined specified value, make car 8 rest in predetermined floor, then make emergency braking device 11 actions.
Embodiment 3
Below, Fig. 6 is the block scheme of main portion of the lift appliance of expression embodiments of the present invention 3.In embodiment 3, the skidding distance of emergent stopping work order device 19 computing suspension bodies 7 relative traction sheaves 3 and sliding velocity are as the slippage degree value.And when the skidding distance of suspension body 7 surpassed distance threshold (the 1st threshold value), emergent stopping work order device 19 made car 8 rest in predetermined floor by towing machine 1.In addition, when the sliding velocity of suspension body 7 outpaced threshold value (the 2nd threshold value), emergent stopping work order device 19 was to emergent stopping drive division 11a output services signal.
At this, threshold speed is configured to as corresponding with the slippage degree greater than distance threshold.That is, threshold speed is set to the numerical value that obtains divided by the unit time (specified time) greater than distance threshold.
In addition, emergent stopping work order device 19 has sliding velocity operational part 20, skidding distance operational part 23 and slippage detection unit 21.Sliding velocity operational part 20 is identical with embodiment 1, the sliding velocity of computing suspension body 7.Skidding distance operational part 23 is identical with embodiment 2, the skidding distance of computing suspension body 7.
Slippage detection unit 21 will be compared by skidding distance and the distance threshold that skidding distance operational part 23 is obtained, to be compared by sliding velocity and the threshold speed that sliding velocity operational part 20 is obtained, according to comparative result and elevator working condition, to various safety device operate portions 22 output commands.
At this, emergent stopping work order device 19 for example has microcomputer.The functional utilization microcomputer of sliding velocity operational part 20, skidding distance operational part 23 and slippage detection unit 21 is realized.And, in the storage part of microcomputer, store the program for the function that realizes sliding velocity operational part 20, skidding distance operational part 23 and slippage detection unit 21.Other structures are identical with embodiment 1.
Fig. 7 is the diagram of circuit of the action of expression slippage detection unit 21 shown in Figure 6.Slippage detection unit 21 at first is determined with without washout (step S41).In the situation that do not produce washout, judge whether skidding distance surpasses distance threshold Xc (step S42).If skidding distance is below the distance threshold Xc, then continue usually running.
In the situation that skidding distance surpasses distance threshold Xc, the cumulative number C3+1 that surpasses distance threshold Xc is counted (step S43), produce designated floor and stop instruction (step S44).After producing designated floor stop instruction, car 8 moves to predetermined floor and rests against this.The floor that car 8 is stopped is such as being the predefined floor such as entrance hall floor or nearest floor.
After the output designated floor was stopped instruction, slippage detection unit 21 was judged the sliding velocities threshold value Vc (step S45) that whether outpaces.The threshold value Vc in the situation that sliding velocity outpaces produces towing machine emergent stopping instruction and emergent stopping work order (working signal), in order to suppress the damage (step S46) of suspension body 7.After producing the instruction of towing machine emergent stopping, the energising of electrical motor 2 is cut off, utilize the rotation of 4 pairs of traction sheaves 3 of traction machine brake to brake.And, after producing the emergent stopping work order, by emergent stopping drive division 11a emergency braking device 11 is carried out braking maneuver.
On the other hand, the threshold value Vc in the situation that sliding velocity does not outpace judges whether cumulative number C3 surpasses predefined specified value γ (step S47).In the situation that C3 is below the γ, after car 8 rested against designated floor, the running of car 8 reverted to common running.And, in the situation that C3 surpasses γ, be judged to be the damage that might accumulate suspension body 7, after car 8 rests against designated floor, produce emergent stopping work order (step S48), wait for that service personnel carries out Maintenance and Repair.
More than be the action when not producing washout, in the situation that produce washout, judge at first also whether skidding distance surpasses distance threshold Xc (step S49).If skidding distance is below the distance threshold Xc, then judge the sliding velocity threshold value Vc (step S41) that whether outpaces.
And, in the situation that skidding distance surpasses distance threshold Xc, cumulative number C3+1 is counted (step S50), then judge the sliding velocity threshold value Vc (step S51) that whether outpaces.
The threshold value Vc in the situation that sliding velocity outpaces produces the emergent stopping work order, in order to suppress the damage (step S52) of suspension body 7.The threshold value Vc in the situation that sliding velocity does not outpace judges whether cumulative number C3 surpasses predefined specified value γ (step S53).In the situation that C3 is below the γ, the state that emergency braking device 11 maintenances are failure to actuate, and wait is according to the recovery of the emergent stopping state of washout.And, in the situation that C3 surpasses γ, be judged to be the damage that might accumulate suspension body 7, behind the emergent stopping based on towing machine 1, produce emergent stopping work order (step S54), wait for that service personnel carries out Maintenance and Repair.
Emergent stopping work order device 19 is periodically implemented above-mentioned acts of determination according to the predetermined cycle.
In this lift appliance, according to from the 1st and the 2nd speed detector 5,18 signal, skidding distance and the sliding velocity of computing suspension body 7 relative traction sheaves 3, when skidding distance surpasses distance threshold Xc, make car 8 rest in designated floor by towing machine 1, when sliding velocity outpaces threshold value Vc, to emergent stopping drive division 11a output services signal, make emergency braking device 11 actions, so can suppress the damage of the suspension body 7 that the excessive slippage because of suspension body 7 relative traction sheaves 3 causes, can prevent the accumulated damage of the suspension body 7 that the small slippage because of suspension body 7 causes simultaneously.
And, carry out in the process of emergency braking action at traction machine brake 4, in the situation that skidding distance surpasses distance threshold Xc, make the emergency braking action of traction machine brake 4 have precedence over designated floor stop action, so can improve reliability.
In addition, when the number of times C3 that surpasses distance threshold Xc at skidding distance surpasses predefined specified value γ, make car 8 rest in predetermined floor, then make emergency braking device 11 actions, so can detect as early as possible the accumulated damage that results from small slippage of suspension body 7, can prevent that the service of lift appliance from descending.
In addition, figure 1 illustrates baudrier is 1: 1 lift appliance, but also can be other baudrier.
In addition, working signal is not limited to electric signal, such as also can being optical signal etc.
In addition, the 2nd speed detector is not limited to the governor coder, for example also can use the direct-detection car gait of march sensor or detect the sensor of the moving velocity of suspension body.

Claims (5)

1. lift appliance, it has:
Towing machine, it has traction sheave;
Suspension body, it is wound onto on the described traction sheave;
Car, it is being hung by suspension body, and by described towing machine and lifting;
Emergency braking device, it is installed on the described car, makes described car emergent stopping according to working signal;
The 1st speed detector, it produces the signal corresponding with the rotative speed of described towing machine;
The 2nd speed detector, it produces the signal corresponding with the gait of march of described car; And
The slippage monitor unit, it is according to from the described the 1st and the signal of the 2nd speed detector, the value that computing is relevant with respect to the slippage degree of described traction sheave with described suspension body is the slippage degree value, when described slippage degree value surpasses the 1st threshold value, utilize described towing machine to make described car rest in predetermined floor, surpass with greater than the 2nd threshold value corresponding to the slippage degree of described the 1st threshold value the time in described slippage degree value, utilize described working signal, make described emergency braking device work
The described suspension body of described slippage monitor unit computing with respect to the sliding velocity of described traction sheave and skidding distance as described slippage degree value, with described skidding distance with compare as the distance threshold of described the 1st threshold value, described sliding velocity and threshold speed as described the 2nd threshold value are compared.
2. lift appliance according to claim 1, wherein, described slippage monitor unit makes described skidding distance revert to initial value whenever described car starting the time.
3. lift appliance according to claim 1, wherein,
Described towing machine is provided with the traction machine brake that the rotation of described traction sheave is braked,
Carry out at described traction machine brake that the slippage degree value surpasses in the situation of described the 1st threshold value described in the process of emergency braking action, make the emergency braking action of being undertaken by described traction machine brake have precedence over the action that makes described car rest in predetermined floor.
4. lift appliance according to claim 1, wherein, when the number of times that surpasses described the 1st threshold value in described slippage degree value surpassed predefined specified value, described slippage monitor unit made described car rest in predetermined floor, then makes described emergency braking device work.
5. lift appliance according to claim 1, wherein, when the aggregate-value of the described slippage degree value that surpasses described the 1st threshold value surpassed predefined specified value, described slippage monitor unit made described car rest in predetermined floor, then makes described emergency braking device work.
CN 200780101121 2007-12-19 2007-12-19 Elevator device CN101827771B (en)

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CN101827771A (en) 2010-09-08
JPWO2009078100A1 (en) 2011-04-28

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