CN102689640A

CN102689640A - System and method for monitoring switching synchronism of joint three-way/five-way turnout

Info

Publication number: CN102689640A
Application number: CN2012101861437A
Authority: CN
Inventors: 张耀红; 毛豫生
Original assignee: China Railway Baoji Bridge Group Co Ltd
Current assignee: China Railway Baoji Bridge Group Co Ltd
Priority date: 2012-06-07
Filing date: 2012-06-07
Publication date: 2012-09-26
Anticipated expiration: 2032-06-07
Also published as: CN102689640B

Abstract

The invention relates to a system and a method for monitoring the switching synchronism of a joint three-way/five-way turnout. The system comprises turnout driving devices, wherein an absolute encoder is arranged on a transmission shaft between two-stage speed reducers of each turnout driving device, and is introduced into the conventional turnout state monitoring system through a bus, so that the function of monitoring the synchronism in the turnout switching process is realized by monitoring and comparing readings of the encoders in real time during programmable logic controller (PLC) numerical processing. The system and the method have the advantages that 1, each turnout driving device is continuously monitored in real time, wherein whether each turnout driving device can be normally started or not and whether a transmission chain fails or not are judged; 2, three driving devices can be continuously monitored in real time under the conditions that slip is overhigh, motors and control circuits thereof fail and the like due to driving asynchronism in the turnout switching process; and 3, an alarm is timely and accurately given, the safety of equipment is ensured, and help information is provided for failure processing.

Description

Joint type three opens/five clear the way trouble turn-out track synchronism monitoring system and monitoring methods

Technical field

The present invention relates to a kind of through real-time monitoring to railroad switch actuating device; Accomplish in the changing points process safety guard-safeguard to track switch equipment; Avoid that slip is excessive because of driving, equipment damaged under the situation such as motor and control loop inefficacy thereof; The joint type three of fault extension is opened/five clear the way trouble turn-out track synchronism monitoring system and monitoring methods, belong to track switch constantly monitored control system make the field.

Background technology

Joint type three opens/five important component parts of trouble of clearing the way as straddle-type monorail transportation system; It is with respect to traditional wheel track track switch, and joint type three opens/and five troubles of clearing the way are a kind of track switch (see figure 6)s with special construction, have five sections track switch beams; Adopt three modes that actuating device drives simultaneously; Make the whole turn-out track of track switch beam, form the turnout, need with the commentaries on classics line of accomplishing the vehicle ' circuit with track girder or the contraposition of track switch beam.Wherein, open at joint type three/five clear the way in the turn-out track process of trouble, each nodal displacement of track switch beam requires synchronous, harmonious and guarantees precision.Simultaneously, in electrical control in order to guarantee the safety of equipment package, employing be the mode that safety type relay constitutes chain circuit control of relay and PLC monitoring, diagnosing fault.This mode is started for three switch motors simultaneously and the protection during et out of order can't be accomplished monitoring in time and reaction, thereby causes because during differing greatly synchronously between the track switch beam drive point (failing starting like motor failover wherein) can cause the relative distortion of more piece track switch beam in motion process to fall down even device damage.Therefore, for the safety that guarantees equipment just need be in the track switch operational process to joint type three open/the five trouble turn-out track synchronisms of clearing the way monitor.

Summary of the invention

Design goal: avoid the weak point in the background technology; Design a kind of through real-time monitoring to railroad switch actuating device; Accomplish in the changing points process safety guard-safeguard to track switch equipment; Avoid that slip is excessive because of driving, equipment damaged under the situation such as motor and control loop inefficacy thereof, the joint type three of fault extension is opened/five clear the way trouble turn-out track synchronism monitoring system and monitoring methods.

Design plan: open at light rail transit joint type three/five clear the way trouble turn-out track drive (fail starting) because during differing greatly synchronously between the track switch beam drive point and can cause the relative distortion of more piece track switch beam in motion process to fall down even device damage like motor failover wherein.Therefore; To of the driven in synchronism monitoring of five joint track switch beams, through going up the installation absolute value encoder and utilize the PLC in the control system to read data, the motion value of three drive points (part 1 among the figure) is compared each other in the design at reductor (part 2 among the figure) at three drive motor (part 1 among the figure); Completion is to the asynchronous detection of motion of track switch beam under various situation; Send warning, the safety of trap points equipment reduces breakdown loss; Secondly; Because the turn-out track angle of track switch each driver train in each turn-out track is identical, and the reduction ratio of messenger chain is identical, therefore; Present technique is on the transmission shaft between each actuating device double reduction, absolute value encoder to be installed; And through bus absolute value encoder is introduced in the existing track switch condition monitoring system (PLC), carry out real-time monitoring rate through reading, thereby realize the synchronism monitoring function of changing points process coder.The installation of absolute value encoder: because the reduction ratio of each actuating device is identical; Therefore in order to guarantee the monitoring of each drive point to greatest extent, be chosen on the transmission shaft of double reduction of each actuating device (not being the electrical motor shaft) absolute value encoder (seeing accompanying drawing) is installed.

Technical scheme 1: a kind of joint type three opens/the five trouble turn-out track synchronism monitoring systems of clearing the way; It comprises railroad switch actuating device; On the transmission shaft between each railroad switch actuating device double reduction, absolute value encoder is installed, and absolute value encoder is introduced in existing track switch condition monitoring system, during promptly PLC numerical value is handled through bus; Reading through to coder carries out real-time monitoring rate, thereby realizes the synchronism monitoring function of changing points process.

Technical scheme 2: joint type three opens/five clear the way trouble turn-out track synchronism monitoring system monitoring method, the monitoring of the reading that PLC numerical value is handled comprises: 1) provide whether normal starting of starting command rear motor simultaneously when 3 motors; 2) motion value to drive point compares in twos each other in the operation process, surpasses when setting difference, sends warning, accomplishes the asynchronous detection of motion of track switch beam under various situation.

The present invention compares with background technology, and the one, realized the monitoring of the real-time continuous of each actuating device of track switch: can comprise normal starting, whether messenger chain exists fault; The 2nd, accomplish in the changing points process three actuating devices asynchronous slip is excessive because of driving, the real-time continuous monitoring under the situation such as motor and control loop inefficacy thereof; The 3rd, warning promptly and accurately guarantees the safety of equipment and to the fault handling information of offering help.

Description of drawings

Fig. 1-the 1st, joint type three open/five structural representations that actuating device A coder is installed in the trouble turn-out track synchronism monitoring system that clear the way.

Fig. 1-2 is the local structure for amplifying scheme drawing of Fig. 1-1.

Fig. 2-the 1st, joint type three open/five structural representations that actuating device B coder is installed in the trouble turn-out track synchronism monitoring system that clear the way.

Fig. 2-the 2nd, the local structure for amplifying scheme drawing of Fig. 2-1.

Fig. 3-the 1st, joint type three open/five structural representations that actuating device C coder is installed in the trouble turn-out track synchronism monitoring system that clear the way.

Fig. 3-the 2nd, the local structure for amplifying scheme drawing of Fig. 3-1.

Fig. 4 is that coder is electrically connected scheme drawing.

Fig. 5 is the monitoring flow graph.

Fig. 6 is that joint type three is opened the five trouble integral structure figure that clear the way.

The specific embodiment

Embodiment 1: with reference to accompanying drawing 1-4.A kind of joint type three opens/the five trouble turn-out track synchronism monitoring systems of clearing the way; It comprises railroad switch actuating device; On the transmission shaft between each railroad switch actuating device double reduction, absolute value encoder is installed, and absolute value encoder is introduced in existing track switch condition monitoring system, during promptly PLC numerical value is handled through bus; Reading through to coder carries out real-time monitoring rate, thereby realizes the synchronism monitoring function of changing points process.Absolute value encoder is installed on the said transmission shaft is meant transmission shaft installation absolute value encoder at railroad switch actuating device.The reduction ratio of each railroad switch actuating device is identical.

Among Fig. 1-1 and Fig. 1-2: 1. three-in-one motor reducer 2. turbine and worm reductors 3. crank B 4. transmission shafts 5. crank A 6. coder covers 7. absolute value encoder A 8. coder Connection Blocks 9. coupler 10. speed reducer output shafts.

Among Fig. 2-1 and Fig. 2-2: among the figure: 1. three-in-one motor reducer 2. turbine and worm reductors 3. crank C 4. transmission shafts 5. crank D 6. coder covers 7. absolute value encoder B 8. coder Connection Blocks 9. coupler 10. speed reducer output shafts.

Among Fig. 3-1 and Fig. 3-2: 1. three-in-one motor reducer 2. turbine and worm reductors 3. crank C 6. coder covers 7. absolute value encoder C 8. coder Connection Blocks 9. coupler 10. speed reducer output shafts.

Among Fig. 6: 1. tailing axle 2. chassis one 3. track switch beams one 4. chassis 2 5. actuating devices 2 6. track switch beams 2 7. chassis 3 8. track switch beams 3 9. chassis 4 10. actuating device B 11. track switch beams 4 12. chassis 5 13. track switch beams 5 14. actuating device C 15. chassis six.

Embodiment 2: with reference to accompanying drawing 5.On the basis of embodiment 1, joint type three opens/five clear the way trouble turn-out track synchronism monitoring system monitoring method, the monitoring of the reading that PLC numerical value is handled comprises: 1) provide whether normal starting of starting command rear motor simultaneously when 3 motors; 2) motion value to drive point compares in twos each other in the operation process, surpasses when setting difference, sends warning, accomplishes the asynchronous detection of motion of track switch beam under various situation.

What need understand is: though the foregoing description is to the mentality of designing of the present invention detailed text description of contrasting; But these text descriptions; Just the simple text of mentality of designing of the present invention is described; Rather than to the restriction of mentality of designing of the present invention, any combination, increase or modification that does not exceed mentality of designing of the present invention all falls in protection scope of the present invention.

Claims

1. a joint type three is opened/the five trouble turn-out track synchronism monitoring systems of clearing the way; It comprises railroad switch actuating device; It is characterized in that: on the transmission shaft between each railroad switch actuating device double reduction, absolute value encoder is installed, and absolute value encoder is introduced in existing track switch condition monitoring system, during promptly PLC numerical value is handled through bus; Reading through to coder carries out real-time monitoring rate, thereby realizes the synchronism monitoring function of changing points process.

2. joint type three according to claim 1 opens/the five trouble turn-out track synchronism monitoring systems of clearing the way, it is characterized in that: absolute value encoder is installed on the said transmission shaft is meant at the transmission shaft of railroad switch actuating device absolute value encoder is installed.

3. joint type three according to claim 1 and 2 opens/the five trouble turn-out track synchronism monitoring systems of clearing the way, and it is characterized in that: the reduction ratio of each railroad switch actuating device is identical.

A joint type three as claimed in claim 1 open/five clear the way trouble turn-out track synchronism monitoring system monitoring method, it is characterized in that: the monitoring of the reading that PLC numerical value is handled comprises: 1) provide whether normal starting of starting command rear motor simultaneously when 3 motors; 2) motion value to drive point compares in twos each other in the operation process, surpasses when setting difference, sends warning, accomplishes the asynchronous detection of motion of track switch beam under various situation.