CN203173665U

CN203173665U - Non-contact elevator door lock

Info

Publication number: CN203173665U
Application number: CN 201320025617
Authority: CN
Inventors: 邹小忠; 韦方平; 邵友德; 李德锋; 葛俊; 丁国志; 余中舟; 周坚; 朱学勤; 戴云松
Original assignee: JIANGSU LIDA ELEVATOR CO Ltd
Current assignee: JIANGSU LIDA ELEVATOR CO Ltd; Special Equipment Safety Supervision Inspection Institute of Jiangsu Province Changzhou Branch
Priority date: 2013-01-18
Filing date: 2013-01-18
Publication date: 2013-09-04
Anticipated expiration: 2023-01-18

Abstract

The utility model discloses a non-contact elevator door lock which comprises a fixed lock hook seat, a fixed lock hook, a movable lock hook seat and a movable look hook. A non-contact detecting module used for detecting the position of the movable lock hook and the locking pressure of the fixed lock hook and the movable lock hook is arranged on the fixed lock hook seat. A non-contact controller is used for replacing an existing contact controller, and therefore the overall safety performance of an elevator is further improved and perfected, and safety accidents caused by door lock failures are effectively reduced.

Description

A kind of contact pointless door lock of elevator

Technical field

The utility model belongs to the elevator technology field, particularly relates to a kind of contact pointless door lock of elevator, door lock of elevator controller and door lock of elevator control method.

Background technology

The elevator safety regulation and stipulation need have electric apparatus to verify after the door lock closure.Existing domestic and international door lock of elevator all adopts the form of contact, and closed checking of latch hook is that the method that adopts this contact of door lock assembly action drive directly to contact realizes that the door lock contact is assembled in the box of a relative closure.Its mode principle as shown in Figure 4.This door lock exists following potential safety hazard and deficiency:

The contact effectively contact be difficult for checking, maintaining cumbersome when particularly high-rise the door lock contact gone bad or the situation of bad contact under, need in layer to check, waste time and energy.

2. existing door lock is very high to the requirement of adjusting, as the meshing backlass of door lock hook, amount of compression of contact etc. maintenance elevator faults that easily causes not in place.

3. what existing loop of the door lock usually adopted is the voltage of 110v, surpasses safety voltage, and is hot line work generally speaking during maintenance, causes Danger Electric shock risk easily.

4. along with the increase of stop, wire resistance is increasing, the door lock poor contact of contacts, and contact resistance increases gradually, and signal attenuation is accelerated, and is difficult for gathering door lock signal.

5. the aging plain conductor of line insulation is exposed easily makes the door lock short circuit, thereby makes the loop of the door lock conducting, makes the door lock conducting thereby have foreign matter to drop in some occasions on the door lock contact, and the terraced phenomenon that occurs opening the door away causes the serious elevator accident that causes casualties.

6. contact and latch hook are two separate parts, adjust not at that time, and the contact contact is normal and latch hook engagement size may not meet safety standard, have potential safety hazard.

7. the contact is subject to environmental concerns in the hoistway, as humidity excessive cause contact corrosion or dust for a long time on the contact accumulation dust all can cause poor contact of contacts.

At present existing a kind of door lock contact detecting device, this device is made up of a plurality of detecting units, and each detecting unit is installed in by the corresponding door lock.This device only can the macroscopic examination contact fault, but still needs every layer of inspection, and is till finding that one deck in bad order, still more consuming time.

The utility model content

The utility model purpose is to overcome potential safety hazard and the deficiency of existing door lock, further improves and improve the safety performance of elevator integral body, effectively reduces the safety misadventure that causes owing to latch failure.

The utility model adopts following technical scheme for achieving the above object:

A kind of contact pointless door lock of elevator comprises fixed lock hook seat, fixed lock hook, moveable lock hook seat and moveable lock hook, it is characterized in that: described fixed lock hook seat is provided with the contact pointless detection module for detection of the position of moveable lock hook and the sealed pressure of moveable lock hook and fixed lock hook.

It is further characterized in that: described contact pointless detection module comprises rang sensor and power sensor.

A kind of contact pointless door lock of elevator controller is characterized in that: it comprises amplifying unit, A/D modular converter, testing circuit module, MCU controller, CAN interface and break-make indicator lamp; The signal of power sensor amplifies again through A/D modular converter analogue to digital conversion input MCU controller through amplifying unit; The signal of rang sensor is through testing circuit module input MCU controller; The MCU controller is judged by the CAN interface output signal to the CAN bus the incoming signal computing, and output signal control break-make indicator lamp shows.

It is further characterized in that: described contact pointless door lock of elevator controller power supply voltage is lower than 24V.

A kind of contact pointless door lock of elevator control method comprises the steps:

(1) rang sensor detects the position of moveable lock hook, if moveable lock hook arrives and the fixed lock hook position engaged, then rang sensor is exported energizing signal; When the sealed pressure of power sensor detection moveable lock hook and fixed lock hook reaches setting value, power sensor output energizing signal;

(2) energizing signal of MCU controller receiving range sensor and power sensor output, when receiving two energizing signal simultaneously, the MCU controller judges that door lock is sealed, the operation of out gate closure signal control elevator; Otherwise then the energizing signal of due-in rang sensor such as continuation and power sensor output is sealed until door lock.

The utlity model has following advantage:

1. what adopt is low voltage (24V is following), safety, and energy consumption is low.

2. adopt the CAN communication technology, solved the loaded down with trivial details problem of wiring, and just can be checked through certain one deck door lock on the elevator main controller in machine room fault is arranged, time saving and energy saving.

3. have on the door lock controller to show the whether indicator lamp of normal operation of two test items, check easily and adjust the elimination latch failure, make things convenient for daily maintenance.

4. not influenced by the line resistance, the door lock signal decay is little.

5. can carry out the integrated optimization design with Room external signal, adopt serial communication technology, can optimize apparatus for controlling elevator, whole apparatus for controlling elevator is had qualitative leap.

6. the detection module of the utility model door lock and latch hook are interactional integrative-structures, latch hook meshes but engagement size out of reach safety standard does not have signal output, also have a latch hook engagement force sense channel in addition, at secure context Redundancy Design is arranged, increased safety performance.

7. be not subjected to such environmental effects such as the interior high humidity of hoistway and dust are many, stopped door lock circuit by the phenomenon of short circuit yet.

Description of drawings

View when Fig. 1 does not mesh for the contact pointless door lock of elevator.

View when Fig. 2 meshes for the contact pointless door lock of elevator.

Fig. 3 is contact pointless door lock of elevator control principle figure.

Fig. 4 has contact door lock of elevator control principle figure for prior art.

Fig. 5 is contact pointless door lock of elevator controller architecture block diagram.

Fig. 6 is contact pointless door lock of elevator control flow chart.

The specific embodiment

A kind of contact pointless door lock of elevator comprises moveable lock hook 6, moveable lock hook seat 3, roller I 2, roller II 4, fixed lock hook 1, fixed lock hook seat 11 contact pointless detection modules 10, door lock controller 7 as shown in Figure 1, 2.Contact pointless detection module 10 is installed in latch hook point of engagement next door, when moveable lock hook 6 under stage clip 5 and the own wt effect when the 2 axle center spinning movements of roller I fall and buckle fixed lock hook 1, contact pointless detection module 10 detects the position (the engagement size is more than or equal to 7mm) of latch hook and is applied to the conducting that is triggered when the fixed lock hook upward pressure reaches requirement, the signal that produces passes to door lock controller 7, intelligent computing by the MCU controller, export correct useful signal to the elevator master control unit, make the safe operation of elevator energy.

The effect of contact pointless detection module is the electrical contact that substitutes original door lock, inside modules is equipped with position transduser and power sensor, position transduser detects the engagement size of latch hook, when moveable lock hook and fixed lock hook engagement, whether position transduser detects moveable lock hook and puts in place, and latch hook puts that position transduser is triggered in place and signal of conducting output; Moveable lock hook reached setting value to the pressure of fixed lock hook and keeps always when the power sensor detected the latch hook engagement, and the power sensor is triggered and a signal is also exported in conducting.The position of contact pointless detection module and latch hook point of engagement can be adjusted, and detects the pressure of distance and detection and also can set.

A kind of contact pointless door lock of elevator controller as shown in Figure 5, it comprises amplifying unit, A/D modular converter, testing circuit module, MCU controller, CAN interface and break-make indicator lamp; The signal of power sensor amplifies again through A/D modular converter analogue to digital conversion input MCU controller through amplifying unit; The signal of rang sensor is through testing circuit module input MCU controller; The MCU controller is judged by the CAN interface output signal to the CAN bus the incoming signal computing, and output signal control break-make indicator lamp shows.

The signal of door lock controller contact pointless detection module output as shown in Figure 6.After controller received the information of power sensor, by the amplifier of electrical bridge amplification of variable magnification factor, this amplifier was subjected to the control of MCU controller that signal is amplified suitable multiple.Signal after the amplification inserts 24 δ-△ A/D converters, and MCU controller control A/D converter is converted into data-signal.MCU controller inside has one through the Reference data of calibration, as the result of A/D conversion during greater than these data, assert that namely first condition meets the demands.The distance that the MCU controller receives rang sensor output puts in place behind the signal, and this signal assert that namely second condition meets the demands after being received by the MCU controller.Have only two conditions all to meet the demands, assert that just door closes.Namely will close gate signal by data-interface after identification is closed the door and send into electric life controller.

The whether break-make display lamp of conducting of binary channel is arranged on the door lock controller, judge when being convenient to door lock fault being arranged to check.Door lock controller uses CAN communication and elevator main controller to carry out logic operation as shown in Figure 3, and whether the action of intelligent decision door lock is effective, and loop of the door lock is short and sweet, and installation wiring is convenient.

Claims

1. a contact pointless door lock of elevator comprises fixed lock hook seat, fixed lock hook, moveable lock hook seat and moveable lock hook, it is characterized in that: described fixed lock hook seat is provided with the contact pointless detection module for detection of the position of moveable lock hook and the sealed pressure of moveable lock hook and fixed lock hook.

2. contact pointless door lock of elevator according to claim 1, it is characterized in that: described contact pointless detection module comprises rang sensor and power sensor.