CN101830379A - Elevator - Google Patents

Elevator Download PDF

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Publication number
CN101830379A
CN101830379A CN 201010129327 CN201010129327A CN101830379A CN 101830379 A CN101830379 A CN 101830379A CN 201010129327 CN201010129327 CN 201010129327 CN 201010129327 A CN201010129327 A CN 201010129327A CN 101830379 A CN101830379 A CN 101830379A
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CN
China
Prior art keywords
braking
instruction
brake equipment
maneuver
car
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN 201010129327
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Chinese (zh)
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CN101830379B (en
Inventor
高崎一彦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Elevator and Building Systems Corp
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Toshiba Elevator and Building Systems Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to JP2009055512A priority Critical patent/JP2010208778A/en
Priority to JP055512/2009 priority
Application filed by Toshiba Elevator and Building Systems Corp filed Critical Toshiba Elevator and Building Systems Corp
Publication of CN101830379A publication Critical patent/CN101830379A/en
Application granted granted Critical
Publication of CN101830379B publication Critical patent/CN101830379B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

A kind of elevator is characterized in that, possesses: car (21); Electrical motor (12); Speed instruction device (14); Rotation angle detecting apparatus (17); Speed detector (13); Speed control unit (15); Control arrangement for inverter current (16), it controls supplying electric current to described electrical motor based on torque instruction value; First brake equipment and second brake equipment (7a, 7b); The first braking instruction device (30); The second braking instruction device (31); And braking abnormal detector (32), it will instruct the braking maneuver of brake equipment of object to be made as effectively and will instruct the braking maneuver of brake equipment of object to be made as under the invalid state by the opposing party the side by described first braking instruction device and the described second braking instruction device, when detecting the lifting action of described car, detect that to become the braking maneuver of brake equipment of actv. instruction object unusual for described braking maneuver.

Description

Elevator
Technical field
The present invention relates to have the elevator of a plurality of brake equipments.
Background technology
In the past, kept door opening state and the configuration example of the accident moved, had the device of having used the safety device that makes dualization of brake equipment as the car that is used to prevent elevator.In this constitutes, even the brake equipment et out of order of a side, also to keep the operation (for example, with reference to TOHKEMY 2006-266362 communique and TOHKEMY 2003-343609 communique) that prevents to open the door of the mode of the braking maneuver of car by the brake equipment of opposite side.
But, under the situation of the brake equipment of having used dualization, even under the situation of being failure to actuate because the brake equipment of a side is unusual, when to the car overbalance direction of elevator, promptly to the heavier side operation of car and counterweight, because the torque as up-coiler is little, so move the possibility that becomes if the above torque of confining force of output brake equipment then also can make.
In this case, because kept braking maneuver to make cage operation,, the temperature of the brake component of brake equipment rises and wearing and tearing so can taking place by the brake equipment of a side.In addition, the fault of brake equipment also becomes the reason of being stranded terraced fault.
In addition, for whether the brake equipment that detects a side moves, need brake the action detection device of usefulness to each preparation of a plurality of brake equipments, cost can increase.
Summary of the invention
So, the object of the present invention is to provide a kind of each elevator of normal operation whether that can individually, easily detect a plurality of brake equipments.
That is to say that elevator of the present invention is characterized in that, possesses: the rope and the counterweight that are hung on pulley via volume link and the car of suspension; Make the electrical motor of described pulley rotation; Set the speed instruction device of command value of the running velocity of described car; Detect the rotation angle detecting apparatus of the anglec of rotation of described electrical motor; Speed detector, it is based on the rotating speed that is detected described electrical motor by the detected anglec of rotation of described rotation angle detecting apparatus; Speed control unit, it is based on the speed value and the deviation of the detected speed detected value of described speed detector that described speed instruction device is set, exports the torque instruction value signal of the rotating speed that is used to control described electrical motor; Control arrangement for inverter current, its torque instruction value based on the signal indication of being exported by described speed control unit is controlled the supplying electric current to described electrical motor; Carry out first brake equipment and second brake equipment of braking maneuver of the machinery of described electrical motor; Generation is to the first braking instruction device of the braking maneuver instruction of described first brake equipment; Generation is to the second braking instruction device of the braking maneuver instruction of described second brake equipment; And braking abnormal detector, it will instruct the braking maneuver of brake equipment of object to be made as effectively and will instruct the braking maneuver of brake equipment of object to be made as under the invalid state by the opposing party of described first braking instruction device and the described second braking instruction device the side by described first braking instruction device and the described second braking instruction device, when detecting the lifting action of described car, the braking maneuver that detects to having carried out the brake equipment that makes described braking maneuver become the actv. instruction is unusual.
Description of drawings
Fig. 1 is the figure of the configuration example of the elevator in expression first embodiment of the present invention.
Fig. 2 is the diagram of circuit of an example of the unusual action of the braking of the expression elevator that is used for detecting first embodiment of the present invention.
Fig. 3 is the figure of the configuration example of the elevator in expression second embodiment of the present invention.
Fig. 4 is the diagram of circuit of an example of the unusual action of the braking of the expression elevator that is used for detecting second embodiment of the present invention.
Fig. 5 is the figure of the configuration example of the elevator in expression the 3rd embodiment of the present invention.
Fig. 6 is the diagram of circuit of an example of the unusual action of the braking of the expression elevator that is used for detecting the 3rd embodiment of the present invention.
Fig. 7 is the figure of the configuration example of the elevator in expression the 4th embodiment of the present invention.
Fig. 8 is the diagram of circuit of an example of the unusual action of the braking of the expression elevator that is used for detecting the 4th embodiment of the present invention.
Fig. 9 is the figure of the configuration example of the elevator in expression the 5th embodiment of the present invention.
Figure 10 is the figure of an example of the sequential chart of the current instruction value of the elevator of expression in the 5th embodiment of the present invention and brake command signal.
Figure 11 is the diagram of circuit of an example of the unusual action of the braking of the expression elevator that is used for detecting the 5th embodiment of the present invention.
Figure 12 is the figure of the configuration example of the elevator in expression the 6th embodiment of the present invention.
Figure 13 is the diagram of circuit of an example of the unusual action of the braking of the expression elevator that is used for detecting the 6th embodiment of the present invention.
The specific embodiment
Below, use accompanying drawing that embodiments of the present invention are described.
(first embodiment)
At first, first embodiment of the present invention is described.
Fig. 1 is the figure of the configuration example of the elevator in expression first embodiment of the present invention.
This elevator possesses: user's power supply 1, converter apparatus 2, smooth condenser 3, DC-to-AC converter 4, the first brake equipment 7a, the second brake equipment 7b, rope 8, current sensing means 11, the electrical motor 12 as up-coiler, speed detector 13, speed instruction device 14, speed control unit 15, control arrangement for inverter current 16, rotation angle detecting apparatus 17.
In this elevator, be transformed to vdc from the alternating electromotive force of user's power supply 1 by converter apparatus 2, by smooth condenser 3 it is carried out smoothing after, export DC-to-AC converter 4 to.
DC-to-AC converter 4 is controlled by control arrangement for inverter current 16, is the alternating-current voltage/AC voltage that has carried out the control of variable voltage variable frequency with the dc voltage conversion of importing, and the alternating-current voltage/AC voltage after this conversion is supplied to electrical motor 12.
On this electrical motor 12 pulley 20 is installed, rope 8 is wound in this pulley 20, and an end of this rope 8 is equipped with car 21, and the other end is equipped with counterweight 22.
And electrical motor 12 rotates driving by the alternating-current voltage/AC voltage of supplying with from DC-to-AC converter 4, makes car 21 lifting in elevating road.
Rotation angle detecting apparatus 17 is installed on electrical motor 12.Be transformed to speed detection signal by these rotation angle detecting apparatus 17 detected torque detection signals by speed detector 13, export speed control unit 15 to.
Speed instruction device 14 output expressions are according to the signal of the speed value of the predetermined operation scheme of car 21.Speed control unit 15, consistent in order to make with the speed value of the speed mode of exporting by speed instruction device 14 by the value of representing from the speed detection signal of speed detector 13 input, will export control arrangement for inverter current 16 to as the current command signal of the torque instruction value signal that is used to control rotating speed.
Alternating current from DC-to-AC converter 4 outputs is detected by current sensing means 11, and this current detection signal is output to control arrangement for inverter current 16.
Control arrangement for inverter current 16, in order to make the value of representing by the current detection signal of this input with consistent by the value of representing from the current command signal of speed control unit 15, to DC-to-AC converter 4 output inverter control signals, DC-to-AC converter 4 is carried out described variable voltage variable frequency control.
The first brake equipment 7a and the second brake equipment 7b are pressed into slipper on the brake component that is fixed in electrical motor 12 rotation of restrictions motor 12 by utilizing elastic force.
In addition, user's power supply 1 is connected in the first brake equipment 7a via switch 33, and is connected in the second brake equipment 7b via switch 34.In addition, constitute close circuit, constitute close circuit by the switch 34 and the second brake equipment 7b by the switch 33 and the first brake equipment 7a.
With the first brake equipment 7a bonded assembly switch 33, thereby make the invalid command signal of unclamping of braking maneuver of the first brake equipment 7a become on-state by exporting, thereby make the braking maneuver actv. involution command signal of the first brake equipment 7a become off-state by output from the first braking instruction device 30.
In addition, with the second brake equipment 7b bonded assembly switch 34, thereby make the invalid command signal of unclamping of braking maneuver of the second brake equipment 7b become on-state by exporting, thereby make the braking maneuver actv. involution command signal of the second brake equipment 7b become off-state by output from the second braking instruction device 31.
When making car 21 operations, the first braking instruction device 30 is made as on-state with switch 33 and comes the restraining coil of brake equipment 7a is switched on, the second braking instruction device 31 is made as on-state with switch 34 and comes the restraining coil of brake equipment 7b is switched on, utilize the electromagnetic force of restraining coil separately to come the brake off piece to the pushing of brake component, thus rotary driving motor 12.
Braking abnormal detector 32, input is from the various command signals of the first braking instruction device 30, the second braking instruction device 31 and from the speed detection signal of speed detector 13.
Braking abnormal detector 32, by from the unclamping under the state that command signal only makes the state that the first brake equipment 7a unclamps and the second brake equipment 7b closure of the first braking instruction device 30, detect by the speed of representing from the speed detection signal of speed detector 13.
Braking abnormal detector 32 is predetermined threshold value when above in its detected speed, and the braking force that is judged as the second closed brake equipment 7b reduces.So, braking abnormal detector 32 makes the command signal of unclamping from the first braking instruction device 30 stop and exporting the involution command signal, thereby stops to unclamp of the first brake equipment 7a, even its involution, detection immediately are that the braking maneuver of the second brake equipment 7b is unusual.
In addition, braking abnormal detector 32, by from the second braking instruction device 31 unclamp command signal the second brake equipment 7b is unclamped and the state of the first brake equipment 7a closure under, detect by the speed of representing from the speed detection signal of speed detector 13.
Braking abnormal detector 32 is predetermined threshold value when above in its detected speed, and the braking force that is judged as the first closed brake equipment 7a reduces.So braking abnormal detector 32 makes the command signal of unclamping from the second braking instruction device 31 stop and export the involution command signal, thereby stops to unclamp of the second brake equipment 7b, detection immediately is that the braking maneuver of the first brake equipment 7a is unusual.
Then, the elevator action to structure shown in Figure 1 describes.Fig. 2 is the diagram of circuit of an example of the unusual action of the braking of the expression elevator that is used for detecting embodiments of the present invention.
In the present embodiment, braking abnormal detector 32, whenever the input of predetermined sampling period is from the signal of the first braking instruction device 30, the second braking instruction device 31 and speed detector 13.
In addition, as initial condition, be not made as and unclamp command signal from the first braking instruction device 30 and 31 outputs of the second braking instruction device, switch 33,34 all is an off-state, and the first brake equipment 7a and the second brake equipment 7b are closed.
Braking abnormal detector 32, stop at elevator, be under the state that stops of the lifting action of car 21 ("Yes" of step S1), if arrive by the district's predetermined timing ("Yes" of S2) of cutting out of described predetermined sampling period, then make the first braking instruction device 30 begin to export the command signal of unclamping of the first brake equipment 7a, thereby switch 33 is made as on-state, makes the first brake equipment 7a unclamp (step S3 → S4).
Under this state, braking abnormal detector 32, input is from the command signal of unclamping of the first braking instruction device 30, and differentiation is that the first brake equipment 7a is a releasing orientation.
Then, braking abnormal detector 32 by the speed from the signal indication of speed detector 13 being predetermined threshold value when above ("Yes" of step S5), is differentiated the braking maneuver unusual (step S6) for the second brake equipment 7b of current closure.
Then, braking abnormal detector 32, make the first braking instruction device 30 stop to export unclamping command signal and exporting involution command signal (step S7) of the first brake equipment 7a, thereby switch 33 is made as off-state, make the first brake equipment 7a closure (step S8), promptly make elevator emergency stop (step S9).
In addition, braking abnormal detector 32 by the speed from the signal indication of speed detector 13 be not threshold value when above ("No" of step S5), and the braking maneuver of the second brake equipment 7b of regarding current closure as is normal.
Then, braking abnormal detector 32, make the first braking instruction device 30 stop to export unclamping command signal and exporting involution command signal (step S10) of the first brake equipment 7a, thereby switch 33 is made as off-state, make the first brake equipment 7a closure (step S11).
Under this state, braking abnormal detector 32, input is from the involution command signal of the first braking instruction device 30, and differentiation is that the first brake equipment 7a is closed.
Then, braking abnormal detector 32 makes the second braking instruction device 31 begin to export the command signal of unclamping of the second brake equipment 7b, thereby switch 34 is made as on-state, makes the second brake equipment 7b unclamp (step S12 → S13).
Under this state, braking abnormal detector 32, input is from the command signal of unclamping of the second braking instruction device 31, and differentiation is that the second brake equipment 7b is a releasing orientation.
Then, braking abnormal detector 32, by speed being described predetermined threshold value when above ("Yes" of step S14), differentiate braking maneuver unusual (step S15) for the first brake equipment 7a of current closure from the signal indication of speed detector 13.
Then, braking abnormal detector 32, make the second braking instruction device 31 stop to export unclamping command signal and exporting involution command signal (step S16) of the second brake equipment 7b, thereby switch 34 is made as off-state, make the second brake equipment 7b closure (step S17).
Then, braking abnormal detector 32, input is from the involution command signal of the second braking instruction device 31, and differentiation is that the second brake equipment 7b is closed, promptly makes elevator emergency stop (step S9) immediately.
On the other hand, braking abnormal detector 32, by the speed from the signal indication of speed detector 13 be not described predetermined threshold value when above ("No" of step S14), differentiation is the first brake equipment 7a and the second brake equipment 7b both sides' a braking maneuver normal (step S18).
In addition, braking abnormal detector 32, (the "No" of step S2 under the state that the either party of the first brake equipment 7a and the second brake equipment 7b does not unclamp, the "No" of step S3, the "No" of step S12), when by the speed from the signal indication of speed detector 13 being described predetermined threshold value when above ("Yes" of step S19), differentiation is at least one side's of the first brake equipment 7a and the second brake equipment 7b a braking maneuver unusual (step S20).
Then, braking abnormal detector 32 promptly makes elevator emergency stop (step S9).In the action of step S19, differentiate for returning the action of step S1 under the situation of "No".
As mentioned above, elevator in first embodiment of the present invention, individually thereby each the brake equipment output braking instruction to dualization is made as closure state with a side, when under this state, detecting the electromotor velocity more than the threshold value, differentiate for the braking maneuver of brake equipment current closure, a side unusual.
Thus, each that can individually, easily detect a plurality of brake equipments normal operation whether.Can reduce thus and be stranded terraced fault, the safety during the closed and operation of the brake equipment that can guarantee to make a side.
(second embodiment)
Then, second embodiment of the present invention is described.Omit the explanation of the part identical in the structure of the elevator in each following embodiment with the unit shown in Fig. 1.
Fig. 3 is the figure of the configuration example of the elevator in expression second embodiment of the present invention.In the elevator in second embodiment of the present invention, braking abnormal detector 32, different with first embodiment, input is from the various command signals of the first braking instruction device 30 and/or the second braking instruction device 31 and from the corner detection signal of rotation angle detecting apparatus.
Braking abnormal detector 32, by from the unclamping under the state that command signal only unclamps the first brake equipment 7a and the second brake equipment 7b closure of the first braking instruction device 30, detect the corner that the corner detection signal of origin angle of rotation detecting device 17 is represented.
Braking abnormal detector 32 is predetermined threshold value when above at this detected corner, and the braking force that is judged as the second closed brake equipment 7b reduces.So braking abnormal detector 32 makes the command signal of unclamping from the first braking instruction device 30 stop and export the involution command signal, thereby stops to unclamp of the first brake equipment 7a, detection immediately is that the braking maneuver of the second brake equipment 7b is unusual.
In addition, braking abnormal detector 32, by from the unclamping under the state that command signal only unclamps the second brake equipment 7b and the first brake equipment 7a closure of the second braking instruction device 31, detect the corner that the corner detection signal of origin angle of rotation detecting device 17 is represented.
Braking abnormal detector 32 is predetermined threshold value when above at this detected corner, and the braking force that is judged as the first closed brake equipment 7a reduces.So braking abnormal detector 32 makes the command signal of unclamping from the second braking instruction device 31 stop and export the involution command signal, thereby stops to unclamp of the second brake equipment 7b, detection immediately is that the braking maneuver of the first brake equipment 7a is unusual.Other formation is identical with first embodiment.
Fig. 4 is the diagram of circuit of an example of the unusual action of the braking of the expression elevator that is used for detecting second embodiment of the present invention.
In the present embodiment, braking abnormal detector 32, whenever the input of predetermined sampling period is from the signal of the first braking instruction device 30, the second braking instruction device 31 and rotation angle detecting apparatus 17.In addition, as initial condition, be not made as and unclamp command signal from the first braking instruction device 30 and 31 outputs of the second braking instruction device, switch 33,34 all is an off-state, and the first brake equipment 7a and the second brake equipment 7b are closed.
At first, similarly carry out action with first embodiment up to step S4, under the state that has unclamped the first brake equipment 7a, braking abnormal detector 32, input is from the command signal of unclamping of the first braking instruction device 30, and differentiation is that the first brake equipment 7a is a releasing orientation.Then, braking abnormal detector 32 is described predetermined threshold value when above ("Yes" of step S31) at serve as reasons corner from the signal indication of rotation angle detecting apparatus 17 of differentiation, carries out the later action of step S6 that illustrates in first embodiment.
In addition, braking abnormal detector 32 is not threshold value when above ("No" of step S31) at the corner of the signal indication of origin angle of rotation detecting device 17, and the braking maneuver of the second brake equipment 7b of regarding current closure as is normal.Then, braking abnormal detector 32, make the first braking instruction device 30 stop to export unclamping command signal and exporting involution command signal (step S10) of the first brake equipment 7a, thereby switch 33 is made as off-state, make the first brake equipment 7a closure (step S11).
Under this state, braking abnormal detector 32, input is from the involution command signal of the first braking instruction device 30, and differentiation is that the first brake equipment 7a is closed.Then, braking abnormal detector 32 makes the second braking instruction device 31 begin to export the command signal of unclamping of the second brake equipment 7b, thereby switch 34 is made as on-state, makes the second brake equipment 7b unclamp (step S12 → S13).
Under this state, braking abnormal detector 32, input is from the command signal of unclamping of the second braking instruction device 31, and differentiation is that the second brake equipment 7b is a releasing orientation.Then, braking abnormal detector 32 is described predetermined threshold value when above ("Yes" of step S32) at serve as reasons corner from the signal indication of rotation angle detecting apparatus 17 of differentiation, carries out the later action of step S15 that illustrates in first embodiment.
On the other hand, braking abnormal detector 32, at the corner of the signal indication of origin angle of rotation detecting device 17 is not described predetermined threshold value when above ("No" of step S32), and differentiation is the first brake equipment 7a and the second brake equipment 7b both sides' a braking maneuver normal (step S18).
In addition, braking abnormal detector 32, (the "No" of step S2 under the state that the either party of the first brake equipment 7a and the second brake equipment 7b does not unclamp, the "No" of step S3, the "No" of step S12), when the corner of the signal indication of origin angle of rotation detecting device 17 is that described predetermined threshold value is when above ("Yes" of step S33), differentiation is at least one side's of the first brake equipment 7a and the second brake equipment 7b a braking maneuver unusual (step S20), promptly makes elevator emergency stop (step S9).In the action of step S33, differentiate for returning the action of step S1 under the situation of "No".
As mentioned above, elevator in second embodiment of the present invention, individually thereby each the brake equipment output braking instruction to dualization is made as closure state with a side, when under this state, detecting the electrical motor corner more than the threshold value, differentiate for the braking maneuver of brake equipment current closure, a side unusual.
Thus, each that can individually, easily detect a plurality of brake equipments normal operation whether.Can reduce thus and be stranded terraced fault, the safety during the closed and operation of the brake equipment that can guarantee to make a side.
(the 3rd embodiment)
Then, the 3rd embodiment of the present invention is described.In the present embodiment, be characterised in that the braking abnormality detection of the loaded state of having considered car 21, the current instruction value of switching motor before carrying out the unclamping of each brake equipment, the maximum loaded state of the car 21 when thus the state of equilibrium of car 21 and counterweight 22 being made as brake equipment working properly, the state of equilibrium of so-called at full load.
Fig. 5 is the figure of the configuration example of the elevator in expression the 3rd embodiment of the present invention.In the elevator in the 3rd embodiment of the present invention, braking abnormal detector 32, compare with first embodiment, except from the various command signals of the first braking instruction device 30 and/or the second braking instruction device 31, the speed detection signal, also import current command signal from speed control unit 15 from speed detector 13.In addition, braking abnormal detector 32 is connected in speed instruction device.Other formation is identical with first embodiment.
Fig. 6 is the diagram of circuit of an example of the unusual action of the braking of the expression elevator that is used for detecting the 3rd embodiment of the present invention.
In the present embodiment, braking abnormal detector 32, whenever the input of predetermined sampling period is from the signal of the first braking instruction device 30, the second braking instruction device 31 and speed detector 13.
In addition, as initial condition, be not made as and unclamp command signal from the first braking instruction device 30 and 31 outputs of the second braking instruction device, switch 33,34 all is an off-state, and the first brake equipment 7a and the second brake equipment 7b are closed.
Braking abnormal detector 32 is at elevator under the situation of halted state ("Yes" of step S1), if reach by the district's predetermined timing ("Yes" of S2) of cutting out of predetermined sampling period, then imports the current command signal from speed control unit 15.Braking abnormal detector 32, whether the current instruction value of differentiating by this signal indication is the value (step S41) that the state of equilibrium of car 21 and counterweight 22 is considered as the state of equilibrium of the at full load under the situation working properly of brake equipment.
Braking abnormal detector 32 is differentiated in the action of step S41 under the situation of "No", and to speed instruction device 14 output speeds instruction switching signal, control is by the current instruction value of representing from the current command signal of speed control unit 15.Braking abnormal detector 32 carries out this control, thereby by the supplying electric current of control arrangement for inverter current 16 controls to electrical motor 12, state of equilibrium (step S42) when making the maximum carrying shape of this car 21 the when state of equilibrium of car 21 and counterweight 22 becomes brake equipment working properly, and then differentiate by the action of step S41.
In addition, braking abnormal detector 32 is differentiated under the situation of "Yes" in the action of step S41, carries out the later action of step S3 that illustrates in first embodiment.
As mentioned above, the elevator in the 3rd embodiment of the present invention, control is from the current-order of speed control unit 15, with the state of equilibrium of car 21 and counterweight 22 be made as car 21 maximum loaded state, be the state of equilibrium of so-called at full load.And, this elevator, by individually to each brake equipment output braking instruction of dualization, thereby a side is made as the state of closure, when under this state, detecting the electromotor velocity more than the threshold value, differentiate for the braking maneuver of brake equipment current closure, a side unusual.By such action, make it possible to differentiate when the loaded state of car 21 is maximum loaded state brake equipment have no abnormal, so can improve the reliability that brake equipment has N/R differentiation result.
(the 4th embodiment)
Then, the 4th embodiment of the present invention is described.Fig. 7 is the figure of the configuration example of the elevator in expression the 4th embodiment of the present invention.In the elevator in the 4th embodiment of the present invention, braking abnormal detector 32, as second embodiment, input is from the various command signals of the first braking instruction device 30 and/or the second braking instruction device 31 and from the corner detection signal of rotation angle detecting apparatus 17.Other formation is identical with the 3rd embodiment.
Fig. 8 is the diagram of circuit of an example of the unusual action of the braking of the expression elevator that is used for detecting the 4th embodiment of the present invention.
In the present embodiment, braking abnormal detector 32, input of predetermined sampling period whenever is from the first braking instruction device 30, the second braking instruction device 31 corner detection signal with rotation angle detecting apparatus 17.In addition, as initial condition, be not made as and unclamp command signal from the first braking instruction device 30 and 31 outputs of the second braking instruction device, switch 33,34 all is an off-state, and the first brake equipment 7a and the second brake equipment 7b are closed.
Braking abnormal detector 32 is at elevator under the situation of halted state ("Yes" of step S1), if reach by the district's predetermined timing ("Yes" of S2) of cutting out of predetermined sampling period, then imports the current command signal from speed control unit 15.Braking abnormal detector 32, differentiate by the current instruction value of this signal indication whether be with the state of equilibrium of car 21 and counterweight 22 be considered as the car 21 of the at full load under the situation working properly of brake equipment maximum loaded state, be the value (step S41) of the state of equilibrium of so-called at full load.
Braking abnormal detector 32, in the action of step S41, differentiate under the situation of "No", to speed instruction device 14 output speeds instruction switching signal, control is carried out the action of step S41 immediately once more by the current instruction value of representing from the current command signal of speed control unit 15 (step S42).
Braking abnormal detector 32 is differentiated under the situation of "Yes" in the action of step S41, carries out the later action of step S3 that illustrates in second embodiment.
As mentioned above, the elevator in the 4th embodiment of the present invention, control is from the current instruction value of speed control unit 15, with the state of equilibrium of car 21 and counterweight 22 be made as car 21 maximum loaded state, be the state of equilibrium of so-called at full load.And, this elevator, by individually to each brake equipment output braking instruction of dualization, thereby a side is made as the state of closure.The braking abnormal detector 32, when under this state, detecting the electrical motor corner more than the threshold value, differentiate for the braking maneuver of brake equipment current closure, a side unusual.By such action, brake equipment had no abnormal when the loaded state that makes it possible to differentiate car 21 was maximum loaded state.Improving brake equipment thus has N/R differentiation result's reliability.
(the 5th embodiment)
Then, the 5th embodiment of the present invention is described.In described each embodiment, under the state of the brake equipment that unclamps a side for the unusual of the either party's that detects brake equipment 7a, 7b braking maneuver, when the braking maneuver of the brake equipment of the opposing party's closure is unusual, car 21 begins to move, and continues like that as described to move before making the brake equipment involution of unclamping behind the anomalous discrimination.In the present embodiment, it is characterized in that, by for and then closed this brake equipment after detecting the described brake equipment that unclamps a side unusually and just, thereby, can suppress the amount of movement of braking maneuver car 21 when unusual with respect to first to fourth embodiment.
Fig. 9 is the figure of the configuration example of the elevator in expression the 5th embodiment of the present invention.In the elevator in the 5th embodiment of the present invention, different with first embodiment, on braking abnormal detector 32, connect switching control 41.Switching control 41 is connected in the first braking instruction device 30 and the second braking instruction device 31.Other formation is identical with first embodiment.
Figure 10 is the figure of an example of the sequential chart of the current instruction value of the elevator of expression in the 5th embodiment of the present invention and brake command signal.
Switching control 41 when the either party's who detects brake equipment 7a, 7b braking maneuver unusual, repeatedly switches the output state that unclamps command signal and involution command signal of the first braking instruction device 30 and/or the second braking instruction device 31 continuously.Shown in Figure 10, from the level that unclamps command signal between the period of output of the current instruction value of speed control unit 15 when " OFF " becomes " ON ", mean that beginning output unclamps command signal and stop to export the involution command signal.In addition, the level that unclamps command signal shown in Figure 10 means that stopping output unclamping command signal and begin to export the involution command signal when " ON " becomes " OFF ".
Figure 11 is the diagram of circuit of an example of the unusual action of the braking of the expression elevator that is used for detecting the 5th embodiment of the present invention.
In the present embodiment, braking abnormal detector 32, whenever the input of predetermined sampling period is from the signal of the first braking instruction device 30, the second braking instruction device 31 and speed detector 13.In addition, as initial condition, be not made as and unclamp command signal from the first braking instruction device 30 and 31 outputs of the second braking instruction device, switch 33,34 all is an off-state, and the first brake equipment 7a and the second brake equipment 7b are closed.
At first, similarly carry out action with first embodiment up to step S4, under the state that has unclamped the first brake equipment 7a, braking abnormal detector 32, input is from the command signal of unclamping of the first braking instruction device 30, and differentiation is that the first brake equipment 7a is a releasing orientation.
After just becoming this state, the instruction that 32 pairs of switching controls 41 of braking abnormal detector send the closed first brake equipment 7a.So, switching control 41 makes the first braking instruction device 30 stop to export unclamping command signal and exporting involution command signal (step S51) of the first brake equipment 7a, thereby switch 33 is made as off-state, makes the first brake equipment 7a closure (step S52).
Under this state, braking abnormal detector 32, input is from the involution command signal of the first braking instruction device 30, and differentiation is that the first brake equipment 7a is in closed state.So, braking abnormal detector 32, obtain from differentiate like that as described be the first brake equipment 7a be releasing orientation play differentiate for closed state end during by speed from the signal indication of speed detector 13.Braking abnormal detector 32, in the maxim of this speed is that predetermined threshold value is when above ("Yes" of step S53), differentiate for from the braking maneuver unusual (step S6) of beginning, promptly make elevator emergency stop (step S9) with regard to the second closed brake equipment 7b.
In addition, braking abnormal detector 32, in the action of step S53, differentiate under the situation of "No", when the output number of times to the instruction of first brake equipment 7a switching control 41, closed does not reach predetermined times ("No" of step S54), what make that the first braking instruction device 30 begins to export the first brake equipment 7a once more unclamps command signal (step S54 → S3).
In addition, braking abnormal detector 32 when the output number of times of the instruction of the closed first brake equipment 7a has reached described predetermined times ("Yes" of step S54), is considered as that just the braking maneuver of the second closed brake equipment 7b is normal from beginning.So braking abnormal detector 32 makes the second braking instruction device 31 begin to export the command signal of unclamping of the second brake equipment 7b, thereby switch 34 is made as on-state, make the second brake equipment 7b unclamp (step S12 → S13).
Under this state, braking abnormal detector 32, input is from the command signal of unclamping of the second braking instruction device 31, and differentiation is that the second brake equipment 7b is a releasing orientation.After just becoming this state, the instruction that 32 pairs of switching controls 41 of braking abnormal detector send the closed second brake equipment 7b.So, switching control 41 makes the second braking instruction device 31 stop to export unclamping command signal and exporting involution command signal (step S55) of the second brake equipment 7b, thereby switch 34 is made as off-state, makes the second brake equipment 7b closure (step S56).
Braking abnormal detector 32, input are from the involution command signal of the second braking instruction device 31, and differentiation is that the second brake equipment 7b is closed state.So, braking abnormal detector 32, obtain from differentiate like that as described be the second brake equipment 7b be releasing orientation play differentiate for closed state end during by speed from the signal indication of speed detector 13.Braking abnormal detector 32, in the maxim of this speed is that predetermined threshold value is when above ("Yes" of step S57), differentiate braking maneuver unusual (step S15), promptly make elevator emergency stop (step S9) for first closed after the action of the step S52 brake equipment 7a.
On the other hand, braking abnormal detector 32, in the action of step S57, differentiate under the situation of "No", when the output number of times to the instruction of second brake equipment 7b switching control 41, closed does not reach predetermined times ("No" of step S58), what make that the second braking instruction device 31 begins to export the second brake equipment 7b once more unclamps command signal (step S58 → S12).
In addition, braking abnormal detector 32, when the output number of times of the instruction of the closed second brake equipment 7b has reached described predetermined times ("Yes" of step S58), differentiation is the first brake equipment 7a and the second brake equipment 7b both sides' a braking maneuver normal (step S18).
As mentioned above, in the elevator in the 5th embodiment of the present invention, before differentiating braking maneuver unusual, carry out a side the closure/unclamp of each brake equipment of dualization repeatedly, in its closure/detect under the situation of the electromotor velocity more than the threshold value during unclamping, differentiate for the braking maneuver of the opposing party's brake equipment unusual.Thus, whether each that can individually, easily detect a plurality of brake equipments normal operation, and can suppress to detect moving of the car 21 that relates to.Thus, the feature that in first embodiment, illustrates, can also improve the safety when having the people to take car 21.
(the 6th embodiment)
Then, the 6th embodiment of the present invention is described.In the present embodiment, same with the 5th embodiment, it is characterized in that, by for and then closed this brake equipment after detecting the described brake equipment that unclamps a side unusually and just, thereby suppress the amount of movement of braking maneuver car 21 when unusual.
Figure 12 is the figure of the configuration example of the elevator in expression the 6th embodiment of the present invention.The braking abnormal detector 32 of the elevator in the 6th embodiment of the present invention, different with the 5th embodiment, input is from the various command signals of the first braking instruction device 30 and/or the second braking instruction device 31 and from the corner detection signal of rotation angle detecting apparatus 17.Other formation is identical with the 5th embodiment.
Figure 13 is the diagram of circuit of an example of the unusual action of the braking of the expression elevator that is used for detecting the 6th embodiment of the present invention.
In the present embodiment, braking abnormal detector 32, whenever the input of predetermined sampling period is from the signal of the first braking instruction device 30, the second braking instruction device 31 and speed detector 13.In addition, as initial condition, be not made as and unclamp command signal from the first braking instruction device 30 and 31 outputs of the second braking instruction device, switch 33,34 all is an off-state, and the first brake equipment 7a and the second brake equipment 7b are closed.
At first, similarly carry out action with the 5th embodiment up to step S52, after just unclamping the first brake equipment 7a and then with it under the closed state, braking abnormal detector 32, input is from the involution command signal of the first braking instruction device 30, and differentiation is that the first brake equipment 7a is closed state.So, braking abnormal detector 32, obtain from differentiate like that as described be the first brake equipment 7a be releasing orientation play differentiate for closed state end during the corner of signal indication of origin angle of rotation detecting device 17.Braking abnormal detector 32, in the maxim of this corner is that predetermined threshold value is when above ("Yes" of step S61), differentiate for from the braking maneuver unusual (step S6) of beginning, promptly make elevator emergency stop (step S9) with regard to the second closed brake equipment 7b.
In addition, braking abnormal detector 32, in the action of step S61, differentiate under the situation of "No", when the output number of times to the instruction of first brake equipment 7a switching control 41, closed does not reach predetermined times ("No" of step S54), what make that the first braking instruction device 30 begins to export the first brake equipment 7a once more unclamps command signal (step S54 → S3).
In addition, braking abnormal detector 32 when the output number of times of the instruction of the closed first brake equipment 7a has reached described predetermined times ("Yes" of step S54), is considered as that just the braking maneuver of the second closed brake equipment 7b is normal from beginning.So braking abnormal detector 32 makes the second braking instruction device 31 begin to export the command signal of unclamping of the second brake equipment 7b, thereby switch 34 is made as on-state, make the second brake equipment 7b unclamp (step S12 → S13).
Under this state, braking abnormal detector 32, input is from the command signal of unclamping of the second braking instruction device 31, and differentiation is that the second brake equipment 7b is a releasing orientation.After just becoming this state, the instruction that 32 pairs of switching controls 41 of braking abnormal detector send the closed second brake equipment 7b.So, switching control 41 makes the second braking instruction device 31 stop to export unclamping command signal and exporting involution command signal (step S55) of the second brake equipment 7b, thereby switch 34 is made as off-state, makes the second brake equipment 7b closure (step S56).
Braking abnormal detector 32, input are from the involution command signal of the second braking instruction device 31, and differentiation is that the second brake equipment 7b is closed state.So, braking abnormal detector 32, obtain from differentiate like that as described be the second brake equipment 7b be releasing orientation play differentiate for closed state end during the corner of signal indication of origin angle of rotation detecting device 17.Braking abnormal detector 32, in the maxim of corner is that predetermined threshold value is when above ("Yes" of step S62), differentiate braking maneuver unusual (step S15), promptly make elevator emergency stop (step S9) for first closed after the action of the step S52 brake equipment 7a.
On the other hand, braking abnormal detector 32, in the action of step S62, differentiate under the situation of "No", when the output number of times to the instruction of second brake equipment 7b switching control 41, closed does not reach predetermined times ("No" of step S58), what make that the second braking instruction device 31 begins to export the second brake equipment 7b once more unclamps command signal (step S57 → S12).
In addition, braking abnormal detector 32, when the output number of times of the instruction of the closed second brake equipment 7b has reached described predetermined times ("Yes" of step S58), differentiation is the first brake equipment 7a and the second brake equipment 7b both sides' a braking maneuver normal (step S18).
As mentioned above, in the elevator in the 6th embodiment of the present invention, before the anomalous discrimination of braking maneuver, carry out a side the closure/unclamp of each brake equipment of dualization repeatedly, in its closure/detect during unclamping under the situation of the electrical motor corner more than the threshold value, differentiate for the braking maneuver of the opposing party's brake equipment unusual.Thus, whether each that can individually, easily detect a plurality of brake equipments normal operation, and can suppress to detect moving of the car 21 that relates to.Thus, the feature that in first embodiment, illustrates, also improved the safety when having the people to take car 21
The above elevator in Shuo Ming the embodiment, whether car 21 moves when having unclamped a side brake equipment in order to differentiate, electromotor velocity and/or electrical motor corner have been used as index, but be not limited to this, whether the testing result that for example also can utilize accelerometer, car position pulse, arrives at the position is differentiated car and is moved.
In addition, braking abnormal detector 32 when the unclamping of the braking of differentiating a side, is not limited to the described command signal of unclamping, and also can use the signal of the shift sensor of brake switch, braking current, brake clearance.And elevator when the braking maneuver that detects brake equipment unusual, can carry out promptly stopping of elevator, and storage errors state or carry out the circular of exceptional value.
In addition, be used to detect each brake equipment unusual action beginning regularly, be not limited to the predetermined timing of elevator stopping period, also can stop at the car of each elevator, after this stops, promptly beginning to be used to detect the unusual action of brake equipment.
The present invention is not limited to described embodiment itself, can the implementation phase in the scope that does not break away from its purport, constitutive requirements are out of shape specific.In addition, can form various inventions by disclosed a plurality of constitutive requirements in the described embodiment are carried out suitable combination.For example, also can from the whole constitutive requirements shown in the embodiment, omit several constitutive requirements.And, also can carry out appropriate combination to the constitutive requirements in the different embodiments.

Claims (7)

1. elevator is characterized in that possessing:
The rope and the counterweight that are hung on pulley via volume link and the car (21) of suspension;
Make the electrical motor (12) of described pulley rotation;
Set the speed instruction device (14) of command value of the running velocity of described car;
Detect the rotation angle detecting apparatus (17) of the anglec of rotation of described electrical motor;
Speed detector (13), it is based on the rotating speed that is detected described electrical motor by the detected anglec of rotation of described rotation angle detecting apparatus;
Speed control unit (15), it is based on the speed value of being set by described speed instruction device with by the deviation of the detected speed detected value of described speed detector, and output is used to control the torque instruction value signal of the rotating speed of described electrical motor;
Control arrangement for inverter current (16), its torque instruction value based on the signal indication of being exported by described speed control unit is controlled the supplying electric current to described electrical motor;
Carry out first brake equipment and second brake equipment (7a, 7b) of braking maneuver of the machinery of described electrical motor;
Generation is to the first braking instruction device (30) of the braking maneuver instruction of described first brake equipment;
Generation is to the second braking instruction device (31) of the braking maneuver instruction of described second brake equipment; And
Braking abnormal detector (32), it will instruct the braking maneuver of brake equipment of object to be made as effectively and will instruct the braking maneuver of brake equipment of object to be made as under the invalid state by the opposing party of described first braking instruction device and the described second braking instruction device the side by described first braking instruction device and the described second braking instruction device, when detecting the lifting action of described car, detect that to become the braking maneuver of brake equipment of actv. instruction object unusual for described braking maneuver.
2. elevator according to claim 1 is characterized in that,
Described braking abnormal detector (32), to instruct the braking maneuver of brake equipment of object to be made as effectively and will instruct the braking maneuver of brake equipment of object to be made as under the invalid state a side, have or not lifting action based on detecting described car by the detected speed of described speed detector by the opposing party of described first braking instruction device and the described second braking instruction device by described first braking instruction device and the described second braking instruction device.
3. elevator according to claim 1 is characterized in that,
Described braking abnormal detector (32), to instruct the braking maneuver of brake equipment of object to be made as effectively and will instruct the braking maneuver of brake equipment of object to be made as under the invalid state a side, have or not lifting action based on detecting described car by the detected anglec of rotation of described rotation angle detecting apparatus by the opposing party of described first braking instruction device and the described second braking instruction device by described first braking instruction device and the described second braking instruction device.
4. elevator according to claim 1 is characterized in that,
Described control arrangement for inverter current (16) control is to the supplying electric current of described electrical motor, the state of equilibrium when making the maximum carrying of this car when state of equilibrium of described car and counterweight becomes described each brake equipment working properly,
Described braking abnormal detector (32), by described control arrangement for inverter current, after the state of equilibrium when control makes that to the supplying electric current of described electrical motor the state of equilibrium of described car and counterweight becomes the maximum carrying of this car, when will instruct the braking maneuver of brake equipment of object to be made as effectively a side by described first braking instruction device and the described second braking instruction device, and in the time of will instructing the braking maneuver of brake equipment of object to be made as the lifting action that detects described car under the invalid state by the opposing party of described first braking instruction device and the described second braking instruction device, detect that to become the braking maneuver of brake equipment of actv. instruction object unusual for described braking maneuver.
5. elevator according to claim 1 is characterized in that,
Described braking abnormal detector (32), to instruct the braking maneuver of brake equipment of object to be made as effectively by a side of described first braking instruction device and the described second braking instruction device, and it is invalid to instruct the braking maneuver of brake equipment of object to be made as by the opposing party of described first braking instruction device and the described second braking instruction device, and then the opposing party's generation by described first braking instruction device and the described second braking instruction device makes the braking maneuver of the brake equipment of instruction object become the actv. instruction, when the braking maneuver of brake equipment that makes the instruction object the opposing party by described first braking instruction device and the described second braking instruction device has become when detecting the lifting action of described car during invalid, detect that to become the braking maneuver of brake equipment of actv. instruction object unusual for described braking maneuver.
6. elevator according to claim 1 is characterized in that,
Described braking abnormal detector (32), predetermined timing at described car stopping period, to instruct the braking maneuver of brake equipment of object to be made as effectively and will instruct the braking maneuver of brake equipment of object to be made as under the invalid state a side by the opposing party of described first braking instruction device and the described second braking instruction device by described first braking instruction device and the described second braking instruction device, when detecting the lifting action of described car, detect that to become the braking maneuver of brake equipment of actv. instruction object unusual for described braking maneuver.
7. elevator according to claim 1 is characterized in that,
Described braking abnormal detector (32), finish at described car each run, to instruct the braking maneuver of brake equipment of object to be made as effectively and will instruct the braking maneuver of brake equipment of object to be made as under the invalid state a side by the opposing party of described first braking instruction device and the described second braking instruction device by described first braking instruction device and the described second braking instruction device, when detecting the lifting action of described car, detect that to become the braking maneuver of brake equipment of actv. instruction object unusual for described braking maneuver.
CN 201010129327 2009-03-09 2010-03-05 Elevator Active CN101830379B (en)

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CN102311029A (en) * 2011-06-14 2012-01-11 中国矿业大学 Method and device for detecting heavy-load lowering of main shaft hoister
CN102653368A (en) * 2011-03-02 2012-09-05 东芝电梯株式会社 Elevator system
CN106487319A (en) * 2015-08-27 2017-03-08 发那科株式会社 Motor drive
CN106715043A (en) * 2014-09-19 2017-05-24 德马吉森精机有限公司 Machine tool and brake checking method

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JP6041601B2 (en) * 2012-09-27 2016-12-14 株式会社アイチコーポレーション Aerial work platform
JP6655489B2 (en) * 2016-07-06 2020-02-26 株式会社日立製作所 Elevator

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CN102653368A (en) * 2011-03-02 2012-09-05 东芝电梯株式会社 Elevator system
CN102653368B (en) * 2011-03-02 2015-05-27 东芝电梯株式会社 Elevator system
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CN102311029B (en) * 2011-06-14 2013-04-24 中国矿业大学 Method and device for detecting heavy-load lowering of main shaft hoister
CN106715043A (en) * 2014-09-19 2017-05-24 德马吉森精机有限公司 Machine tool and brake checking method
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CN106715043B (en) * 2014-09-19 2020-01-10 德马吉森精机有限公司 Machine tool and brake inspection method
CN106487319A (en) * 2015-08-27 2017-03-08 发那科株式会社 Motor drive
CN106487319B (en) * 2015-08-27 2019-09-24 发那科株式会社 Motor drive

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