CN102530666A

CN102530666A - Elevator equipment

Info

Publication number: CN102530666A
Application number: CN2011104276089A
Authority: CN
Inventors: 岩本晃; 大沼直人; 永沼一斗; 加藤可奈子
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 2010-12-27
Filing date: 2011-12-19
Publication date: 2012-07-04
Anticipated expiration: 2031-12-19
Also published as: CN102530666B; JP5602613B2; JP2012136322A

Abstract

In emergency stop of an elevator, high-reliability position detection can be performed through a position detector for detecting position and a shielding plate without a specified absolute position detector, etc. The elevator equipment is provided with the following components: an elevator cage; a counterweight which is suspended to oppose the elevator cage through a hoisting cable; a shielding plate which is equipped corresponding to each storey at a lifting channel side for detecting the position; and the position detector which is equipped at the elevator cage side and is equipped opposite to the shielding plate for detecting the position of the elevator cage. After emergency stop of the elevator, the elevator cage is caused to operate in a low speed for obtaining output of the position detector. Furthermore the position of the elevator cage is detected according to the output. The elevator equipment is also provided with two kinds of shielding plates which have different shapes and can be identified by the position detector. The two kinds of the shielding plates are equipped alternately along the storey of the lifting channel side. Therefore, even when the position estimation error in emergency stop is more than one storey, the estimation error can be determined, and the position of the elevator cage can be detected.

Description

Lift facility

Technical field

The present invention relates to a kind of lift facility, especially relate to a kind of device that is suitable for when elevator has carried out promptly stopping, detecting elevator position.

Background technology

Position probing with multiple shape is used shield, when for example it is shaped as two kinds, is necessary alternately to be provided with, and need has detecting device, so that artificial being provided with when unusual detecting unusually such as setup error taking place.

For example; Disclose a kind of method for a kind at patent documentation, it has the position detecting device that alternately produces first pulse and second pulse, has taken place in proper order when unusual in the generation of said pulse; Detect to mistake has taken place, and disabled position detecting device generation pulse.

Technical literature formerly

Patent documentation

Patent documentation 1: Japan opens clear 55-150305 communique in fact

Summary of the invention

In above-mentioned prior art, adopted the pulse generator of using with two position probing to improve the reliability of position probing, and taken place when unusual being judged as, the inhibiting pulse generator produces the method for pulse., because it has used a plurality of pulse generators in the detection of elevator position, so possibly cause the fault rate of equipment itself to rise.

On the other hand; Also known have through in the lift car side position detector that position probing is used being set; And on the correspondence position of each floor of hoist trunk side, the technology that shield that position probing uses directly detects stop zone with the zone of can opening the door of lift car is set.At elevator unusual perhaps lift car having taken place and waited under the situation of having carried out promptly stopping because of having a power failure, can use this position detector and shield to make elevator parking arrive nearest floor in the elevator low speed driving after stopping.

; High stratification along with the building that elevator is set; Elevator speed further improves, when elevator has carried out promptly stopping, because of reasons such as skidding of producing between hoist cable and the rope sheave and hoist cable elongations; The actual stop position of lift car is compared with computing value, the above error of height of a floor may occur being equivalent to.When above-mentioned situation has taken place, can't know that which layer the nearest floor after promptly stopping is actually, if too pay attention to the computing value of elevator car position, mistake possibly appear when the nearest floor of identification.

The objective of the invention is to; At elevator unusual perhaps lift car having taken place waits under the situation of having carried out promptly stopping because of having a power failure; Need not use special-purpose devices such as absolute position transducer; Position detector and shield through utilizing said position probing to use are realized the position probing that reliability is high, improve the reliability of lift facility thus.

The present invention provides a kind of lift facility, and it has: lift car; Make the electrical motor of said lift car up-down through hoist cable; Be hung as and the opposed counterbalanced weight of said lift car through said hoist cable; The shield that the position probing that is provided with accordingly with each floor of hoist trunk side is used; And position detector, this position detector is installed in said lift car side, and is provided with opposed to each other mutually with said shield; Be used to detect the position of lift car; In said lift facility, after elevator emergency stops, said lift car is gone and obtain the output of said position detector; And detect the position of lift car according to the output of said position detector; Said lift facility is characterised in that, also have multiple variform can be by the shield of said position detector identification, and said multiple shield alternately is arranged between the floor of said hoist trunk side.Thus, through the kind of identification shield, when having carried out promptly stopping, can judging whether an error that story height is above has taken place.

Further feature of the present invention is, is controlled at two kinds through the kind with said shield, can realize low cost.Characteristic of the present invention is explained in following embodiment.

The invention effect

According to the present invention; Elevator because of the situation that has a power failure or carried out promptly stopping unusually under; Even between the data in the actual position of lift car and the elevator control gear deviation has taken place; Also can detect the absolute location of lift car through the diverse shield that is arranged on the hoist trunk side, thereby can realize the lift facility that reliability is high through making elevator.

Description of drawings

Fig. 1 is the integral structure scheme drawing of the related lift facility of one embodiment of the invention.

Fig. 2 is the scheme drawing of the related elevator control gear of one embodiment of the invention.

Fig. 3 is the shape judgement figure of the related shield of one embodiment of the invention.

Fig. 4 be one embodiment of the invention generation the position probing diagram of circuit when having a power failure.

The specific embodiment

Below, with reference to accompanying drawing embodiment of the present invention is described.

Fig. 1 is an embodiment of lift facility of the present invention, and Fig. 2 is an embodiment of the elevator control gear of one embodiment of the invention.As shown in Figure 1, lift facility have lift car 1 with drive electrical motor 2 that elevator uses and with lift car 1 counterbalanced weight 3 of setting opposed to each other mutually, lift car 1 is connected with hoist cable 5 through pulley 4 with counterbalanced weight 3.In addition; Coder 6 is installed on electrical motor 2; When electrical motor 2 rotations; Coder 6 is along with the rotation of electrical motor 2 produces pulse, and this pulse is input to position detection part 10 in the microcomputer (MPU) 9 detecting the position of lift car via the output input buffers (I/O) 8 that are arranged in the control setup 7 shown in Figure 2, and is input to speed detecting part 11 to detect the speed of lift car via output input buffer (I/O) 8.

In addition, lift car 1 is provided with lifting capacity detecting device 12, is input to lifting capacity test section 13 in the MPU9 to detect the lifting capacity of lift car 1 through these lifting capacity detecting device 12 detected data via the I/O8 in the control setup 7.In addition, the position detector 14 that detects lift car 1 position is installed, and is provided with variform shield 15A, the 15B that is used for the detection position accordingly in hoist trunk side and position detector 14 at the car upper section of lift car 1., detect via the I/O8 in the control setup 7 from the detection signal of position detector 14 by the shield test section 16 in the MPU9.

Fig. 3 representes the shape judgement figure of shield, the example of Fig. 3 (a) expression shield shape A, the example of Fig. 3 (b) expression shield shape B.Position detector 14 as shown in Figure 1 being installed on the lift car 1, three optical axises that optical axis 1～3 expression perhaps receives from shield towards the shield emission.Three optical axises of optical axis 1～3 are in graphic ON/OFF (opposed/non-opposed) state respectively according to the different of the opposed locations of the opposed locations of position detector 14 and shield 15A and position detector 14 and shield 15B.In the stop zone of the central authorities of two

shield

15A, 15B, optical axis 1～3 all is in the ON state, and in the opened the door zone of stopping before and after the zone, the detecting pattern of optical axis 1～3 is different.Through using the shield of above-mentioned two kinds of shapes; No matter position detector 14 is to begin from top to bottom to overlap or begin from top to bottom with shield 15 to overlap with shield 15, can both judge the kind and the direction of shield according to the ON/OFF signal of position detector 14.

For example, when downside began to overlap with shield shape A, till certain distance of going, the ON/OFF state of optical axis was started at from optical axis 1 and is ON/OFF/ON in regular turn at position detector 14.Then, when downside began to overlap with shield shape B, the ON/OFF state of optical axis was started at from optical axis 1 and is ON/OFF/OFF in regular turn, and behind the certain distance that gone, becoming with the identical signal condition of shield shape A is ON/OFF/ON at position detector 14.Use begins to overlap the gone difference of ON/OFF signal of the optical axis 1～3 till the certain distance of lift car from position detector 14 and shield 15, can determine shield shape A or shield shape B.In addition, the shape variation amount is by the moving velocity that detects the lift car 1 till the shield and the MPU9 cycle of the obtaining decision to the signal of position detector 14.

Fig. 4 represent one embodiment of the invention generation the position probing diagram of circuit when having a power failure, it shows from having a power failure and begins the position to detection lift car 1, arrives and rest in the flow process till the opened the door zone of nearest floor.Except being applied to have a power failure, the present invention obviously can also be applied to elevator and carry out the occasion that promptly stops because of unusual grade.

At first, elevator begins to go (S1), supposes that elevator has carried out promptly stopping (S2) because of power failure waits in motion.At this moment, preceding various data (S3) take place to preserve to have a power failure in position, speed and lifting capacity through the position detection part in the MPU9 of elevator control gear 10, speed detecting part 11 and lifting capacity test section 13 are stored the elevator before stopping respectively.

After this, after restore electricity at elevator (S4), according to preserve in advance stop before position, direction, speed and the lifting capacity of elevator, through calculating the stop position (S5) of inferring the elevator when promptly stopping.Then, make elevator begin to go (S6) towards the opened the door zone of nearest floor, and the pulse of going from coder 6 is counted, continue to infer the position of lift car with this with low speed.

Through shield (S8) time, judge that the shape of the shield that is passed through is shape A (S9) or shape B (S10).If the result who judges representes neither shape A, in the time of neither shape B, be judged as the current location that can't detect elevator, and make elevator drive to the terminal floor that can detect the absolute location, finish operation (S11) afterwards.

When the shape of the shield that is judged as the estimated position (+allowed band) that should be positioned at lift car and the shape of the shield that is passed through were consistent, the car position test section 10 of elevator control gear 7 made the position shown in car position and this shield consistent (S12).Therefore, even the hoist cable when promptly stopping to skid etc. and to make the error that has occurred being equivalent to a story height between actual position and the estimated position of lift car, also can come correctly to detect car position through the shape of judging shield.After this, make elevator parking finish operation (S12) in the back, zone of can opening the door.

Wherein, Position deduction precision when promptly stopping is low; Might occur in the lift facility of the error of two floors to three more than the floor; Be equivalent to several floors according to error and prepare species number and the corresponding multiple shield of number of floor levels, and said multiple shield alternately is arranged on the relevant position of hoist trunk side, can tackle the big situation of above-mentioned error thus.

Nomenclature

1 lift car

2 electrical motors

3 counterbalanceds weight

4 pulleys

5 hoist cables

6 coders

7 control setups

8 output input buffers (I/O)

9 MPU

10 position detection parts

11 speed detecting part

12 lifting capacity detecting devices

13 lifting capacity test sections

14 position detectors

15A shield shape A

15B shield shape B

16 shield test sections

Claims

1. lift facility, it has: lift car; Make the electrical motor of said lift car up-down through hoist cable; Be hung as and the opposed counterbalanced weight of said lift car through said hoist cable; The shield that the position probing that is provided with accordingly with each floor of hoist trunk side is used; And position detector, this position detector is installed in said lift car side, and is provided with opposed to each other mutually with said shield; Be used to detect the position of lift car, in this lift facility, after elevator emergency stops; Said lift car is gone and obtain the output of said position detector; And detecting the position of lift car according to the output of said position detector, said lift facility is characterised in that

Have multiple variform can be by the shield of said position detector identification, and said multiple shield alternately is arranged between the floor of said hoist trunk side.

2. lift facility as claimed in claim 1 is characterized in that,

Said variform can be two kinds by the kind of the shield of said position detector identification, said two kinds of shields alternately are arranged between the floor of said hoist trunk side.

3. lift facility as claimed in claim 1 is characterized in that,

Further has the current location detecting device; The position of the lift car when this current location detecting device is inferred the urgent stop position of said elevator and said going after this, and use the kind of the shield that when said the going of lift car, makes the position detector action and the current location that lift car is detected in the position.

4. lift facility as claimed in claim 3 is characterized in that,

Further have memory storage and car stop position estimating device; The speed of the lift car when said memory device stores promptly stops to take place, position and lifting capacity, said car stop position estimating device are inferred the stop position of said lift car when promptly stopping according to speed, position and the lifting capacity of said lift car.