CN107867610A

CN107867610A - Apparatus for controlling elevator

Info

Publication number: CN107867610A
Application number: CN201710478424.2A
Authority: CN
Inventors: 宫前真贵; 岩本晃; 齐藤勇来
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 2016-09-28
Filing date: 2017-06-21
Publication date: 2018-04-03
Anticipated expiration: 2037-06-21
Also published as: JP6626808B2; JP2018052667A; CN107867610B

Abstract

The present invention provides an elevator control system comprising a car, a motor for raising and lowering the car through ropes, a control device for controlling the motor to raise and lower the car, and an end floor detection device for detecting the approach of the car to an end floor . The control device makes the car ascend and descend at the first speed for a certain distance after the emergency stop of the car, and when the end floor is detected by the end floor detection device during the ascending and descending for a certain distance and the first speed is faster than the predetermined speed, the control device makes the car The car decelerates to the second speed for lifting. According to this, it is possible to solve the problem that it is difficult to safely and quickly raise and lower the car whose absolute position has been lost due to a power cut.

Description

Apparatus for controlling elevator

Technical field

The present invention relates to apparatus for controlling elevator.

Background technology

In the case where elevator emergency stops and can restart, after restarting traveling, it is expected promptly to determine sedan-chair Railway carriage or compartment position, elevator is set to recover normal.

For example, Patent Document 1 discloses following technology：In elevator in quick area's emergent stopping, elevator is changed into can In the case of restarting, restart to travel, and according to the information from the encoder on governor sheave axle and The information obtained from the shutter for the position detection for being arranged on liftway, to determine the absolute position of the car after emergent stopping Put, also elevator is run at high speed outside elevator door opening-closing region.

Citation

Patent document

Patent document 1：TOHKEMY 2016-069133 publications

The content of the invention

In patent document 1, for the elevator speed increasing method after quick area's emergent stopping, recorded, still For the method for the elevator speedup for making to lose absolute position after power up is powered, do not recorded.

It is therefore an object of the present invention to provide it is a kind of power up power supply after lose absolute position elevator safety and Promptly reach undermost elevator device.

Described in apparatus for controlling elevator possesses car, motor, control motor for lifting car by rope make End layer detection means of the control device and detection car of car lifting close to the situation of end layer.Control device makes car tight Jerk makes car lift certain distance with First Speed after stopping, detected during certain distance is lifted by end layer detection means End layer and First Speed than it is prespecified it is fireballing in the case of, car is decelerated to second speed to be lifted.

Invention effect

More than, according to the present invention, in the case that elevator loses absolute position after power up power supply, also can It is enough to make elevator lifting safe and quickly to orlop.

Brief description of the drawings

Fig. 1 is that elevator involved by present embodiment is monolithically fabricated legend.

Fig. 2 is the system pie graph example involved by present embodiment.

Fig. 3 is the flow chart illustration of present embodiment.

Symbol description

1 ... three-phase alternating-current supply

2 ... control panels

3 ... elevator control gears

4 ... motor

5 ... pulleys

6 ... motor R.E

7 ... main ropes

8 ... cars

9 ... balance weights

10 ... position detecting devices

11 ... shutters

12 ... speed controller ropes

13 ... governor sheaves

14 ... speed regulator R.E

15 ... end layer detection means

16 ... buffers

17 ... storage parts

18 ... position operational parts

19 ... velocity arithmetic portions

20 ... comparing sections

21 ... speed command portions

22 ... inverters

Embodiment

Fig. 1 is that elevator is monolithically fabricated legend.Elevator possesses control panel 2, motor 4, car 8, by the electricity in control panel 2 Terraced control device 3 controls the electric power supplied from three-phase alternating-current supply 1, and is supplied to motor 4, drives motor 4.Moreover, By and the driving force supplied, making car 8 and balance weight 9 not shown from the pulley 5 of motor 4 is linked in via main rope 7 Liftway in lifted.Be mounted with to detect on the axle of pulley 5 direction of rotation of motor 4, car 8 position it is electronic Machine R.E6 (motor encoder).

Speed controller rope 12 it has been coupled on car 8, speed controller rope 12 is set up in governor sheave 13.They and car 8 lifting is synchronous, and the speed controller rope 12 being coupled with car 8 moves, and rotates governor sheave 13.In governor sheave 13 Be mounted with axle according to the rotation amount of governor sheave 13 come detect the position of car 8, speed speed regulator R.E14 (speed regulators Encoder).

Position detecting device 10 is installed in car 8, position detecting device 10 is arranged on lifting (not shown) by detection The shutters 11 different in the superiors, orlop, intermediate laminates in passage, to detect the absolute position of car 8.In addition, End layer detection means 15 is provided near orlop in liftway (not shown), is provided with foot in car 8 pour the buffer 16 protected during end layer.

Fig. 2 is the system pie graph example involved by present embodiment, is to be used to explain for losing absolute position The figure for the action that the car 8 put safely travels towards orlop.By by the base of position operational part 18 in elevator control gear 3 In position detecting device 10 and motor R.E6 and speed regulator R.E14 step-by-step counting and the position operation values of computing, to slap Hold the absolute position of car 8.If the power supply of control panel 2 is cut off, position computing can not be carried out, as long as so in power up Position detecting device 10 does not detect the superiors or undermost shutter 11 during power supply, and elevator control gear 3 is judged as To lose absolute position, in order to grasp absolute position, started running towards orlop.Now, as increasing the speed of car 8 The unit poured to buffer 16 is prevented while fast, uses end layer detection means 15.By the speed in elevator control gear 3 Operational part 19 carrys out speed when computing end layer detection means 15 detects end layer, and by comparing section 20 to velocity arithmetic value and storage Speed setting value in storage part 17 is compared, if velocity arithmetic value is more than speed setting value, elevator control gear 3 Interior speed command portion 21 exports forced deceleration instruction to inverter 22, car 8 is rested in orlop.In addition, end layer detects Device can use the device being made up of cam switch.

Stopped at due to car 8 also be present than end layer detection means 15 closer to undermost situation, so can also example Speed is limited as set speed limit in two stages.Here, for speed limit, the speed faster than First Speed i.e. is set Three speed.Car 8 is travelled before a certain set a distance is travelled using the First Speed as speed limit, certain having travelled certain After distance, speedup to the third speed as speed limit.Now, for certain certain distance, by by comparing section 20 to by elevator 11 numbers of shutter or motor that position operational part 18 in control device 3 is detected based on position detecting device 10 R.E6 or speed regulator R.E14 step-by-step counting carry out the obtained position operation values of computing and the position being stored in storage part 17 Setting value is compared, according to comparative result come speed limit.

The flow chart illustration of present embodiment is shown in Fig. 3.Whether restored electricity after judging the dump of control panel 2 (S1), in the case where restoring electricity, judge whether position detecting device 10 detects the superiors or undermost shutter 11(S2)。

In the case where being not detected by, elevator control gear 3 is judged as losing absolute position, and speed limit is set into the first speed Degree starts running (S3) towards orlop.If state (S4) downward driving that end layer is not detected by end layer detection means 15 is certain Distance (S8), then make speed limit speedup to third speed (S9).If hereafter end layer detection means 15 detects end layer (S4), judge Whether speed now has exceeded speed setting value (S5).In the case of more than for speed setting value, output forced deceleration refers to Order, makes car 8 rest against orlop (S6).In the case of below for speed setting value, normally rest against in end layer (S7), electricity Ladder recovers normal (S10).That is, after control device makes car emergent stopping, car is lifted certain distance with First Speed, rising During drop certain distance by end layer detection means detect end layer and First Speed than it is prespecified it is fireballing in the case of, Make car be decelerated to second speed to be lifted.In addition, it is not detected by during certain distance is lifted by end layer detection means In the case of end layer, control device makes car be lifted with the third speed faster than the First Speed.

The present invention is not limited to above-described embodiment, and above-described embodiment is in order to be readily appreciated that to illustrate the present invention and detailed Illustrate.It is not necessarily limited to possess illustrated entire infrastructure, each structure of embodiment, function, processing unit etc. are to them Part or all be illustrated.For example, it is also possible to by the way of speed regulator R.E is installed to the axle of governor sheave or It is connected to the mode of governor sheave.In addition, in the figure of embodiment, for clear explanation, it is illustrated that the electricity of 1: 1 canoe Ladder, but can also apply to the elevator of 2: 1 canoes.

Claims

1. A lift control system, characterized in that:

Car;

an electric motor for raising and lowering the car by means of ropes;

a motor encoder mounted to the shaft of the motor;

a governor pulley that rotates in conjunction with the car;

A speed governor encoder, which is installed on the speed governor pulley shaft;

a control device that controls the motor to raise and lower the car; and

an end-floor detection device, which detects that the car is close to the end-floor,

The control device moves the car up and down at a first speed for a certain distance after the car is stopped in an emergency, and the end floor detection device detects the end floor and the first speed during the lifting and lowering of the certain distance. When the speed is faster than the predetermined speed, the car is decelerated to the second speed for ascending and descending.

2. The elevator control system according to claim 1, characterized in that,

In a case where the end floor is not detected by the end floor detection means during the lifting of the certain distance, the control means causes the car to ascend and descend at a third speed faster than the first speed.

3. The elevator control system according to claim 1 or 2, characterized in that it also has:

visors; and

a position detection device that detects the position of the car by detecting the shutter,

Regarding the certain distance, the position detection device detects a certain number of the shielding plates to measure the distance.

4. The elevator control system according to claim 1 or 2, characterized in that,

The fixed distance is measured by detecting the position of the car with a motor encoder attached to the shaft of the motor or a governor encoder attached to the governor pulley shaft.

5. The elevator control system according to any one of claims 1 to 4, characterized in that,

The end layer detection device is composed of a cam switch.