CN203392699U

CN203392699U - Intelligent braking circuit of portal crane driver

Info

Publication number: CN203392699U
Application number: CN201320450248.9U
Authority: CN
Inventors: 徐琳; 罗欣; 胡觉远; 吕晓东
Original assignee: Hangzhou Riding Control Technology Co Ltd
Current assignee: Hangzhou Riding Control Technology Co Ltd
Priority date: 2013-07-26
Filing date: 2013-07-26
Publication date: 2014-01-15
Anticipated expiration: 2023-07-26

Abstract

The utility model discloses an intelligent braking circuit of a portal crane driver. The intelligent braking circuit comprises a motor, a control unit and an IGBT (insulated gate bipolar transistor) module. The control unit is serially connected with the IGBT module, and the IGBT module is serially connected with the motor. The braking circuit further comprises an audion and a relay. The audion is serially connected with the control unit and the relay, and the audion and the relay are connected between two random phases of the motor. By the aid of the intelligent braking circuit, a landing door can close slowly during outage, and accordingly accidents of pinching and injuring passengers are avoided.

Description

The intelligent braking circuit of a kind of machine actuator

Technical field

The utility model relates to a kind of machine actuator, relates in particular to the intelligent braking circuit of a kind of machine actuator.

Background technology

Door machine actuator is a driving control unit of elevator door-motor, and elevator door-motor system is comprised of mechanical part, motor drive controller and mechanical drive two parts thereof, as shown in Figure 1 and Figure 2, Fig. 1, Fig. 2 are typical center opening door structure, comprise car door 2, Room door 1, door pocket 3, door guide roller 4, Room door guide rail bracket 5, door leaf 7, Room door frame column 6, door slide block 8 and weight, wherein car door 2 is active door, Room door 1 is driven door, car door 2 is driven by motor and physical construction thereof, drives Room door 1 to complete switch gate action.

At present in main flow door machine structure normally by driven by motor drive wheel, drive wheel drives car door 2 along continuous straight runs closure or openness by band tooth synchronous belt again, during car door 2 closure or openness, to drive Room door 1 closure or openness, and when something unexpected happened is during as power-off, motor cannot drive car door 2 to cut out and then drive Room door 1 to cut out, now need to drive Room door 1 to close by the weight on elevator, to prevent that people from surprisingly falling in the door of the Room and causing the danger of the hoistway that falls, but the inertia due to weight and door-plate, while closing Room door 1 under the drive of weight, easily there is hitting an event, as now just in time having passenger through being easy to crush passenger's situation.

Summary of the invention

The utility model easily crushes the defects such as passenger for the Room door existing in prior art under weight drives, and a kind of intelligent braking circuit of new door machine actuator is provided.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

The intelligent braking circuit of a kind of machine actuator, comprise motor, control unit, IGBT module, described control unit and IGBT module are in series, described IGBT module and motor are in series, also comprise aerotron, relay, described aerotron and control unit are in series, and described aerotron and relay are in series, and described aerotron and relay are connected between any two-phase of motor.

During normal operation, control unit is controlled IGBT module output inverter current to motor by output signal, thereby control unit is also output signal control aerotron driving relay unlatching simultaneously, when the fault that meets accident is during as power-off, motor any two-phase will be under the effect of relay short circuit, because motor internal is three coil winding, after any two-phase short circuit of motor, the rotating shaft of motor can make to change by the magnetic flow of closing coil, coil will generation current hinders the generation of this variation, produce the rotation of dumping force obstruction motor, and the dumping force of motor and motor movement opposite direction, and along with rotating speed increases and increases, therefore when power-off, motor is twirl along with the whereabouts of weight, motor hinders electric machine rotation by producing the dumping force that sense of motion is contrary simultaneously, make Room door slowly closed in the situation that of power-off, avoid the situation that crushes passenger to occur.

As preferably, the intelligent braking circuit of a kind of machine actuator described above, the normally closed contact one in described relay is connected with the U phase line of motor, and the normally closed contact two in described relay is connected with the V phase line of motor.

During normal operation, control unit is controlled IGBT module output inverter current to motor by output signal, thereby control unit is also output signal control aerotron driving relay unlatching simultaneously, and now normally closed contact two is closed with open contact, disconnection between normally closed contact one and normally closed contact two, when the fault that meets accident is during as power-off, normally closed contact two and normally closed contact one closure, short circuit between the U phase line of motor and V phase line now, because motor internal is three coil winding, after the U of motor phase line and V phase line short circuit, the rotating shaft of motor can make to change by the magnetic flow of closing coil, coil will generation current hinders the generation of this variation, produce the rotation of dumping force obstruction motor, and the dumping force of motor and motor movement opposite direction, and along with rotating speed increases and increases, therefore when power-off, motor is twirl along with the whereabouts of weight, motor hinders electric machine rotation by producing the dumping force that sense of motion is contrary simultaneously, make Room door slowly closed in the situation that of power-off, avoid the situation that crushes passenger to occur.

As preferably, the intelligent braking circuit of a kind of machine actuator described above, also connects respectively and is provided with speed detection module and current detection module between described control unit and motor.When meeting accident, short circuit between any two-phase of motor, now motor coil can produce very large rush current, and especially obvious when the output of motor high-speed operation or electric current is very large, easily cause in this case the damage of device or the mistake passage of signal, for avoiding the generation of above-mentioned situation, can set up speed detection module and current detection module detects respectively the speed of motor and electric current, then divide the different phenomenons of driver malfunction to adopt different control policies, to guarantee carrying out again the folding of relay lower in the situation that at motor speed and electric current, make Room door safer when meeting accident auto-closing.

Accompanying drawing explanation

Fig. 1 is the front elevation of existing motor center opening door structure;

Fig. 2 is the back view of existing motor center opening door structure;

Fig. 3 is the schematic circuit diagram of the intelligent braking circuit of a kind of machine actuator of the utility model;

Fig. 4 is the mode chart of the current of electric before control unit, speed detection module and current detection module are processed;

Fig. 5 is the mode chart of the current of electric after control unit, speed detection module and current detection module are processed.

The specific embodiment

Below in conjunction with accompanying drawing 3-5 and the specific embodiment, the utility model is described in further detail, but they are not to restriction of the present utility model:

embodiment 1

As shown in Figure 3, the intelligent braking circuit of a kind of machine actuator, comprise motor 13, control unit 9, IGBT module 10, described control unit 9 is in series with IGBT module 10, described IGBT module 10 is in series with motor 13, also comprises aerotron 15, relay 14, and described aerotron 15 is in series with control unit 9, described aerotron 15 is in series with relay 14, and described aerotron 15 and relay 14 are connected between any two-phase of motor 13.

During normal operation, control unit 9 is controlled IGBT module 10 output inverter currents to motor 13 by output signal, thereby control unit 9 is also output signal control aerotron 15 driving relays 14 unlatchings simultaneously, when the fault that meets accident is during as power-off, between any two-phase of motor 13 by short circuit under the effect at relay 14, because motor 13 inside are three coil winding, after any two-phase short circuit of motor 13, the rotating shaft of motor 13 can make to change by the magnetic flow of closing coil, coil will generation current hinders the generation of this variation, produce the rotation of dumping force obstruction motor 13, and the dumping force of motor 13 is contrary with motor 13 sense of motions, and along with rotating speed increases and increases, therefore when power-off, motor 13 is twirl along with the whereabouts of weight, motor 13 will produce the rotation of the dumping force obstruction motor 13 that sense of motion is contrary simultaneously, make Room door 1 slowly closed in the situation that of power-off, avoid the situation that crushes passenger to occur.

As preferably, the normally closed contact 1 in described relay 14 is connected with the U phase line of motor 13, and the normally closed contact 2 141 in described relay 14 is connected with the V phase line of motor 13.

embodiment 2

As shown in Figure 3, the intelligent braking circuit of a kind of machine actuator, comprise motor 13, control unit 9, IGBT module 10, described control unit 9 is in series with IGBT module 10, described IGBT module 10 is in series with motor 13, also comprise aerotron 15, relay 14, described aerotron 15 is in series with control unit 9, described aerotron 15 is in series with relay 14, described aerotron 15 and relay 14 are connected between any two-phase of motor 13, between described control unit 9 and motor 13, also connect respectively and be provided with speed detection module 11 and current detection module 12.

During normal operation, control unit 9 is controlled IGBT module 10 output inverter currents to motor 13 by output signal, thereby control unit 9 is also output signal control aerotron 15 driving relays 14 unlatchings simultaneously, when the fault that meets accident is during as power-off, between any two-phase of motor 13 by short circuit under the effect at relay 14, because motor 13 inside are three coil winding, after any two-phase short circuit of motor 13, the rotating shaft of motor 13 can make to change by the magnetic flow of closing coil, coil will generation current hinders the generation of this variation, produce the rotation of dumping force obstruction motor 13, and the dumping force of motor 13 is contrary with motor 13 sense of motions, and along with rotating speed increases and increases, therefore when power-off, motor 13 is twirl along with the whereabouts of weight, motor 13 will produce the rotation of the dumping force obstruction motor 13 that sense of motion is contrary simultaneously, make Room door 1 slowly closed in the situation that of power-off, avoid the situation that crushes passenger to occur.And speed detection module 11 and current detection module 12 will detect the rotating speed of motor 13 and electric current, and result is sent to control unit 9, control unit 9 will adopt Different Strategies according to different situations, the action ，Shi Room door 1 that guarantees to carry out again relay lower in the situation that at motor 13 rotating speeds and electric current is more safe and reliable during at auto-closing.

As shown in Figure 4, before control unit, speed detection module and current detection module are processed, when any two-phase of motor is closed, by having very large rush current, produce, easily cause device failure or signal mistake passage.As shown in Figure 5, after control unit, speed detection module and current detection module are processed, can guarantee to carry out again the action of relay 14 at motor speed and electric current lower in the situation that, more safe and reliable while making motor brake.

In a word, the foregoing is only preferred embodiment of the present utility model, the equalization that all scopes of applying for a patent according to the utility model are done changes and modifies, and all should belong to covering scope of the present utility model.

Claims

1. the intelligent braking circuit of a door machine actuator, comprise motor (13), control unit (9), IGBT module (10), described control unit (9) is in series with IGBT module (10), described IGBT module (10) is in series with motor (13), it is characterized in that: also comprise aerotron (15), relay (14), described aerotron (15) is in series with control unit (9), described aerotron (15) is in series with relay (14), described aerotron (15) and relay (14) are connected between any two-phase of motor (13).

2. the intelligent braking circuit of a kind of machine actuator according to claim 1, it is characterized in that: the normally closed contact one (142) in described relay (14) is connected with the U phase line of motor (13), the normally closed contact two (141) in described relay (14) is connected with the V phase line of motor (13).

3. the intelligent braking circuit of a kind of machine actuator according to claim 1, is characterized in that: between described control unit (9) and motor (13), also connect respectively and be provided with speed detection module (11) and current detection module (12).