CN216791145U - Detection apparatus for goat power contact conversion trouble - Google Patents
Detection apparatus for goat power contact conversion trouble Download PDFInfo
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- CN216791145U CN216791145U CN202220101178.5U CN202220101178U CN216791145U CN 216791145 U CN216791145 U CN 216791145U CN 202220101178 U CN202220101178 U CN 202220101178U CN 216791145 U CN216791145 U CN 216791145U
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Abstract
The utility model belongs to a detection device for the switching fault of a movable contact of a switch, which monitors the time length from the movement of an action rod or a locking mechanism active part to the specified displacement or to the specified angular displacement to the rotation of a movable contact shaft to the set angular displacement in the switching process of the switch and compares the time length with the set time length threshold value, alarms or pre-alarms when the actual consumed time length exceeds the threshold value, timely checks whether the movable contact shaft rotates to the specified angular displacement after timing to the limit time length according to the characteristics of the switch, timely generates jamming fault alarm information when the rotation angular displacement does not meet the requirements, realizes the monitoring of whether the rotation of the movable contact shaft of the switch is delayed, warns and guides the maintenance before the rotation jamming of the movable contact shaft occurs, and can immediately confirm or eliminate the fault factor that the movable contact shaft does not rotate in place after no fault is shown, the reliability of the switch machine can be improved, and the time for troubleshooting of the non-indication fault can be shortened.
Description
Technical Field
The utility model belongs to a monitoring and measuring method of turnout switching equipment in the field of rail transit, and particularly relates to a detection device for a switching fault of a movable contact of a turnout switch machine (hereinafter referred to as a switch machine).
Background
The switch machine belongs to a remote control device, whether the switching and locking functions are realized or not is that corresponding information is transmitted to an operator by switching contacts (opening and closing specified contacts) in the switch machine and opening and closing a circuit connected to a machine room, if the switching of the contacts in the switch machine is delayed or blocked, the transmission of the information is delayed, or the information cannot be transmitted, or error information is transmitted.
The information of goat contact transmission is used for instructing the state information of switch, relates to driving safety and driving efficiency, and the delay of contact conversion does not influence driving safety, but very big influence driving efficiency, especially after the contact conversion jam takes place, because can not obtain switch state information, if the train operation route must pass this position switch, then must stop the switch and arrange personnel to get rid of the trouble as soon as possible. Due to the fact that the fault causes corresponding to the fault phenomenon are numerous, maintenance personnel need to conduct troubleshooting from indoor related equipment connected with circuits, fault processing is long in time consumption, waiting time of trains is long, the trains can be affected by the fault processing, passengers complain about the trains, and negative social effects are caused.
If the switching process of the movable switch point can be monitored, maintenance and repair can be arranged in time when the movable switch point is switched to be delayed, the movable switch point can be prevented from being blocked, or the fault reason of the turnout losing state indication can be known in time when the blockage occurs to be the contact switching blockage, maintenance personnel are guided to be directly connected to the switch machine for processing, the troubleshooting and processing time is shortened, the waiting time of a train is shortened, and the number of affected trains is reduced. Therefore, the method has important significance for monitoring whether the switching mobile contact is delayed or not, and has economic and social benefits.
Disclosure of Invention
The utility model aims to provide a detection device for a switching machine movable contact switching fault, which is used for monitoring whether the rotation of the switching machine movable contact is delayed or not, and giving an early warning when the switching is delayed, so that the switching machine movable contact switching fault is reduced, and the reliability of a switching machine is improved.
The technical scheme of the utility model is as follows: it relates to a detection device for the switching fault of a mobile contact of a switch, comprising: the displacement monitoring module is a non-contact position detection device consisting of a measuring part and a reading head, the measuring part usually comprises a grating, a magnetic column and the like, the reading head is a device capable of converting the position or angle change of the measuring part into an electric signal or a digital quantity, and the two components form a linear displacement or angular displacement sensor which is called as the displacement monitoring module.
The data acquisition and processing module and the reading head in the displacement monitoring module are in information transmission, the connection form is wired or wireless, and the modules are respectively supplied with power by a power supply or distributed to the displacement monitoring module by the power supply after being supplied to the data acquisition and processing module.
The switch machine is generally provided with two groups of movable contacts (respectively called as a left movable contact and a right movable contact in the utility model), each group of movable contacts corresponds to two groups of static contacts, the movable contacts rotate for a certain angle under the control of related parts and springs, one group of static contacts is disconnected and then connected with the other group of static contacts, an angular displacement measuring part is fixedly arranged at the end heads of a left movable contact shaft and a right movable contact shaft respectively and rotates along with the left movable contact shaft and the right movable contact shaft, and an angular displacement reading head is fixedly arranged at the same side of the angular displacement measuring part and is aligned with the rotation axis of the angular displacement measuring part to measure the angular displacement of the movable contacts.
In addition, a group of displacement detection modules are arranged for detecting the action rod of the switch machine or the driving part of the locking mechanism of the switch machine, when the action rod is detected, the linear displacement measuring piece is fixed on the action rod along the movement direction of the action rod and moves along with the action rod, and the linear displacement reading head is fixedly installed on the same side of the linear displacement measuring piece and is aligned with the movement path of the linear displacement measuring piece. When the active part of the locking mechanism is detected, if the active part does linear motion, the linear displacement measuring part is fixed on the surface of the active part along the linear motion direction and moves along with the active part, the linear displacement reading head is fixed on the same side of the linear displacement measuring part and is aligned with the motion path of the linear displacement measuring part, if the active part does rotary motion, the angular displacement measuring part is fixedly installed at the end head of the rotating shaft of the active part and rotates along with the rotating shaft, the rotating shafts of the angular displacement measuring part and the linear displacement reading head are aligned, and the angular displacement reading head is fixedly installed on the same side of the angular displacement measuring part and is aligned with the rotating shaft of the angular displacement measuring part.
The two angular displacement monitoring modules corresponding to the left movable contact and the right movable contact respectively measure the rotational angular displacement of the corresponding switch movable contact and transmit the rotational angular displacement to the data acquisition processing module for calculation processing, the displacement sensor corresponding to the action rod or the active part of the locking mechanism measures the displacement or the rotational angular displacement of the action rod or the active part of the locking mechanism and transmits the displacement or the rotational angular displacement to the data acquisition processing module for calculation processing, the data is compared to obtain the time or the sampling period number consumed by the action rod moving to the maximum value of the contact conversion speed or converting to a certain angular displacement, or the time or the sampling period number consumed by the active part of the locking mechanism moving to the maximum value of the contact conversion speed or converting to a certain angular displacement, and the time or the sampling period number is compared with the set threshold value, and when the threshold value is exceeded, early warning or alarming is carried out.
A threshold value is required to be set before judging whether the point switch contact is delayed or blocked, and the threshold value comprises an early warning threshold value and an alarm threshold value. The early warning and alarm threshold values of the switch machine in-pulling and out processes can be different numerical values, and for simplicity of description, the early warning and alarm threshold values of the switch machine in-pulling and out processes are described by the same numerical values in the document.
The utility model has the advantages that:
by monitoring the time length from the movement of an action rod or a driving part of a locking mechanism to the specified displacement or the rotation to the specified angular displacement in the switching process of the switch machine to the rotation of a movable contact shaft to the set angular displacement and comparing the time length with the set time length threshold value, alarming or early warning is carried out when the actual consumed time length exceeds the threshold value, whether the movable contact shaft rotates to the specified angular displacement or not is timely checked according to the characteristics of the switch machine after the time length is counted to the limit time length, jamming fault alarm information is timely generated under the condition that the rotation angular displacement does not meet the requirements, a non-contact detection method is used according to the working principle of the switch machine under the premise of not influencing the safety and reliability of the switch machine, the monitoring on whether the rotation of the movable contact shaft is delayed or not is realized, the warning and maintenance guidance are carried out before the occurrence of the rutting of the movable contact shaft, and after no fault is expressed, the failure factor that the movable contact point shaft does not rotate in place can be immediately confirmed or eliminated, the reliability of the switch machine can be improved, and the troubleshooting time of the non-indication failure can be shortened.
The utility model is further explained below with reference to the drawings of the embodiments.
Drawings
FIG. 1 is a schematic diagram of a system for determining the starting time of the rotating time period of a movable contact shaft by the displacement of an action rod in a ZD9/ZDJ9 switch machine according to the present invention;
FIG. 2 is a schematic diagram of the system structure for determining the starting time of the timing of the rotating time of the movable contact shaft by the displacement of the action plate in the ZD9/ZDJ9 switch machine of the present invention;
FIG. 3 is a schematic diagram of a system for determining the starting time of the rotating time counting of the rotating contact shaft by the movement of the action rod in the ZD6 switch machine according to the present invention;
FIG. 4 is a schematic diagram of a system for determining the starting time of the timing of the rotating duration of the rotating contact shaft according to the angular displacement of the locking gear or the main shaft, applied to the ZD6 switch machine;
FIG. 5 is a flow chart showing the generation of early warning and alarm information of the delay and jamming of the movable contact shaft of the switch.
In the figure: 1. a data acquisition processing module; 2. a first displacement monitoring module 2-1; a first measuring member; 2-2, a first reading head; 3. a second displacement monitoring module; 3-1, a second measuring piece; 3-2, a second read head; 4. a third displacement monitoring module; 4-1, a third measuring piece; 4-2, a third read head; 5. 4 rows of intravenous contact groups (ZD 9/ZDJ 9); 6. a right movable contact shaft (ZD 9/ZDJ 9); 7. 3 rows of intravenous contact groups (ZD 9/ZDJ 9); 8. 2 rows of intravenous contact groups (ZD 9/ZDJ 9); 9. a left movable contact shaft (ZD 9/ZDJ 9); 10. 1 row of intravenous contact groups (ZD 9/ZDJ 9); 11. an action lever (ZD 9/ZDJ 9); 12. a push plate sleeve; 13. an action plate; 14. row 1 of the static contact group of ZD 6; 15. 2 rows of static contact groups of ZD 6; 16. the right movable contact point shaft of ZD 6; 17. group of 3 rows of static contacts of ZD 6; 18. 4 rows of static contact groups of ZD 6; 19. the left movable contact point shaft of ZD 6; 20. ZD6 action lever; 21. a rack block; 22. a locking gear; 23. a main shaft.
Detailed Description
To further explain the technical means and methods adopted by the present invention to achieve the intended purpose, the following detailed description of the embodiments and the structural features of the present invention will be made with reference to the accompanying drawings and examples.
In the present invention,
the group of 4 rows of static contacts 5 represents a group of 4 rows of static contacts of ZD9 switch or ZDJ9 switch.
The right movable contact point shaft 6 represents a right movable contact point shaft of a ZD9 switch or a ZDJ9 switch.
The group of 2 rows of static contacts 8 represents a group of 2 rows of static contacts of ZD9 switch or ZDJ9 switch.
The output left movable contact shaft 9 represents an output left movable contact shaft of a ZD9 switch or a ZDJ9 switch.
The action bar 11 represents the action bar of a ZD9 switch or a ZDJ9 switch.
This definition is different from the ZD6 switch machine.
Example 1
The utility model relates to a device for detecting the switching fault of a movable contact of a switch, which takes a ZD9/ZDJ9 switch as an implementation object, in the switch, a push plate sleeve 12 is an active part in a locking mechanism, an action plate 13 is fixedly arranged on the push plate sleeve, the push plate sleeve 12 pushes an action rod (ZD 9/ZDJ 9) 11, the action plate 13 and a spring control the rotation of a left movable contact shaft (ZD 9/ZDJ 9) 9 and a right movable contact shaft (ZD 9/ZDJ 9), taking the action rod right-stretching switch as an example, when the action rod (ZD 9/ZDJ 9) is pulled into a terminal position, the push plate sleeve 12 continues to move until the right movable contact shaft (ZD 9/ZD 9) 6 is not restrained, the right movable contact shaft (ZD 9/ZDJ 9) 6 is quickly rotated under the action of the spring, a ZD9/ZD 9) 5 is disconnected, a ZD 638/ZD 6866/ZD 686 6866 is quickly rotated under the action rod 3527, a ZD 6342 is connected to a terminal position and a ZD9/ZD 73727/3611 is stretched out, the pusher shoe 12 continues to move until the left live contact axis (ZD 9/ZDJ 9) 9 is free to rotate rapidly under the action of the spring, opening 1 row of dead contact group (ZD 9/ZDJ 9) 10 and closing 2 rows of dead contact group (ZD 9/ZDJ 9) 8.
After the action rod (ZD 9/ZDJ 9) 11 is switched to the right position and locked by the switching locking mechanism of the switch machine, the left movable contact shaft (ZD 9/ZDJ 9) 9 or the right movable contact shaft (ZD 9/ZDJ 9) 6 rapidly rotates under the action of a spring according to the pulling-in or extending-out state of the action rod (ZD 9/ZDJ 9), and the angular displacement of the rotation termination position reaches a design value, so that the movable contact controlled by the switching locking mechanism is opened and closed by a specified static contact group, and possible faults in the process of switching the movable contact are as follows:
1. the driving force is insufficient, the movable contact is blocked and can not be separated from the original static contact group.
2. The inspection column can not fall into the inspection gap, or the related parts are blocked in the movement, and the movable contact can not be connected with a new static contact group.
3. The driving force is reduced or the resistance is increased, and the switching process of the movable contact is slow and delayed.
As shown in fig. 1, the detection device includes a data acquisition processing module 1, a first displacement monitoring module 2 composed of a first measuring member 2-1 and a first reading head 2-2, a second displacement monitoring module 3 composed of a second measuring member 3-1 and a second reading head 3-2, and a third displacement monitoring module 4 composed of a third measuring member 4-1 and a third reading head 4-2.
The first displacement monitoring module 2 and the second displacement monitoring module 3 are non-contact angular displacement measuring modules, the third displacement monitoring module 4 is a non-contact linear displacement measuring module, the first measuring part 2-1 is fixedly arranged at the end of a left movable contact shaft (ZD 9/ZDJ 9) 9, the second measuring part 3-1 is fixedly arranged at the end of a right movable contact shaft (ZD 9/ZDJ 9) 6, the third measuring part 4-1 is fixedly arranged on the surface of an action rod (ZD 9/ZDJ 9), the first measuring part 2-1 and the second measuring part 3-1 are radial magnetized magnets, the interface of the N pole and the S pole is coincided with the axial center of the left movable contact shaft (ZD 9/ZDJ 9) 9 after the first measuring part 2-1 is arranged, the interface of the N pole and the S pole is coincided with the axial center of the right movable contact shaft (ZD 9/ZDJ 9) 6 after the second measuring part 3-1 is arranged, the third measuring part 4-1 is a magnetic grid, the length direction of the magnetic grid is consistent with the movement direction of the action rod (ZD 9/ZDJ 9) 11 after installation, the first reading head 2-2 and the second reading head 3-2 are magnetoelectric conversion devices capable of converting the magnetic field change into an electric signal or a digital quantity, and are fixedly installed respectively, the detection center of the first reading head 2-2 is positioned on the rotating axis of the left movable contact point shaft (ZD 9/ZDJ 9) 9 and is positioned at the same side with the first measuring part 2-1, the detection center of the second reading head 3-2 is positioned on the rotating axis of the right movable contact point shaft (ZD 9/ZDJ 9) 6 and is positioned at the same side with the second measuring part 3-1; the third reading head 4-2 is a magnetoelectric conversion device which can convert the change of the magnetic field into an electric signal or digital quantity, is fixedly arranged at the same side of the third measuring part 4-1 and is aligned with the motion path of the magnetic grid.
The data acquisition and processing module 1 is connected with the first reading head 2-2, the second reading head 3-2 and the third reading head 4-2 through wires and transmits power and information, the data acquisition and processing module 1 processes the received information to obtain angular displacement of a left movable contact shaft (ZD 9/ZDJ 9) 9 and a right movable contact shaft (ZD 9/ZDJ 9) 6 and linear displacement data of an action rod (ZD 9/ZDJ 9) 11, and calculates whether a point machine action rod (ZD 9/ZDJ 9) 11 moves to a specified position (displacement) to a right movable contact shaft (ZD 9/ZDJ 9) 6 switching on 3 rows of stationary contact groups (ZD 9/ZDJ 9) 7 or a left movable contact shaft (9/ZDJ 9) 9 switching on 2 rows of stationary contact groups (ZD 9/ZDJ 9) 8 or whether a ZD junction point damping phenomenon (ZD 9/ZDJ 595) or a ZD axis (ZD 469) damping phenomenon occurs or a left movable contact shaft (ZD 46599) 9/ZD 599, and carrying out early warning and alarming according to the result.
Before judging whether the rotation of the movable contact shaft of the switch is delayed or blocked, a relevant threshold value and other parameters need to be set, and the threshold value comprises an early warning threshold value and an alarm threshold value. The early warning and alarm threshold values of the switch machine in-pulling and out processes can be different numerical values, and for simplicity of description, the early warning and alarm threshold values of the switch machine in-pulling and out processes are described by the same numerical values in the document.
Without loss of generality, the extreme positions of the action rod (ZD 9/ZDJ 9) 11 right-extension switch machine pull-in locking state and the action rod (ZD 9/ZDJ 9) 11 and the action plate 13 moving along with the push plate sleeve 12 are taken as respective zero positions, so that the extreme positions of the action rod (ZD 9/ZDJ 9) 11 and the action plate 13 moving along with the push plate sleeve 12 move to the extension locking state and are the maximum displacement of the action rod, and the zero positions of 4 rows of static contact groups (ZD 9/ZDJ 9) 5 reliably switched into a right dynamic contact shaft (ZD 9/ZDJ 9) 6, the zero positions of 3 rows of static contact groups (ZD 9/ZDJ 9) reliably switched into a right dynamic contact shaft (ZD 9/ZDJ 9) 6, the angular displacement of 1 row of static contact groups (ZD 9/ZDJ 9) reliably switched into a left dynamic contact shaft (ZD 9/ZDJ 9) 9, and the zero positions of 2 rows of static contact groups (ZD 9/ZDJ 378) reliably switched into a left dynamic contact group (ZDJ 588) switched into a left dynamic contact shaft (ZD 9/ZDJ 5739) 24/ZDJ 599).
After the zero position is determined, the detection value of the displacement of the action rod (ZD 9/ZDJ 9) 11 is recorded as L, the detection value of the angular displacement of the movable contact point shaft which rotates rapidly after the action rod (ZD 9/ZDJ 9) 11 of the switch machine is locked is recorded as theta, and for the switch machine which extends to the right, the detection value of the angular displacement of the action rod (ZD 9/ZDJ 9) 11 is drawn in and locked and is then the angular displacement of the right movable contact point shaft (ZD 9/ZDJ 9) 6, and the detection value of the angular displacement of the left movable contact point shaft (ZD 9/ZDJ 9) 9 is after the action rod (ZD 9/ZDJ 9) 11 extends and is locked and is then theta.
The following definitions are made:
Lpulling deviceThe switch machine action rod (ZD 9/ZDJ 9) 11 is in the drawing and locking process, and the right movable contact point shaft(ZD 9/ZDJ 9) 6 judgment value of rotation time period timing start time, LExtension armThe method is characterized in that the extension and locking process of the action rod (ZD 9/ZDJ 9) 11 of the switch machine, the judgment value of the starting time of the time length timing of the rotation of the left movable contact point shaft (ZD 9/ZDJ 9) 9 and the displacement values L and L of the action rod (ZD 9/ZDJ 9) 11 are calculatedPulling deviceAnd LExtension armComparing, judging whether to start timing, thetaPulling deviceThe judgment value of the timing end time of the rotating time length of the right movable contact point shaft (ZD 9/ZDJ 9) 6 is theta during the pulling and locking process of the action rod (ZD 9/ZDJ 9) 11 of the switch machineExtension armDuring the extension and locking process of the action rod (ZD 9/ZDJ 9) 11 of the switch machine, the time counting end time judgment value of the rotating time length of the left movable contact point shaft (ZD 9/ZDJ 9) 9 and the angular displacement value theta and theta of the right movable contact point shaft (ZD 9/ZDJ 9) 6 are used for judging the angular displacement value theta and thetaPulling deviceComparing or comparing the angular displacement value theta of the left movable contact point shaft (ZD 9/ZDJ 9) 9 with thetaExtension armComparing, judging whether to finish timing, thetaDrawing 1After the action rod (ZD 9/ZDJ 9) 11 of the switch machine is pulled and locked, the right movable contact point shaft (ZD 9/ZDJ 9) 6 rotates to make the movable contact point controlled by the right movable contact point shaft separate from the angular displacement judgment value of 4 rows of static contact point groups (ZD 9/ZDJ 9) 5, theta is thetaDrawing 2After the action rod (ZD 9/ZDJ 9) 11 of the switch machine is drawn and locked, the right movable contact point shaft (ZD 9/ZDJ 9) 6 rotates, so that the movable contact points controlled by the right movable contact point shaft are switched on the angular displacement judgment value of the 3 rows of static contact point groups (ZD 9/ZDJ 9) 7, and theta is thetaExtension 1After the action rod (ZD 9/ZDJ 9) 11 of the switch machine is stretched and locked, the left movable contact point shaft (ZD 9/ZDJ 9) 9 rotates to make the movable contact point controlled by the left movable contact point shaft disengage the angular displacement judgment value of 1 row of static contact point group (ZD 9/ZDJ 9) 10, theta isExtension 2After the action rod (ZD 9/ZDJ 9) 11 of the switch machine is stretched and locked, the left movable contact point shaft (ZD 9/ZDJ 9) 9 rotates to make the movable contact point controlled by the left movable contact point shaft turn on the angular displacement judgment value of 2 rows of static contact point groups (ZD 9/ZDJ 9) 8, and the measured angular displacement values theta and theta of the movable contact point shaft are usedDrawing 1、θDrawing 2、θExtension 1、θExtension 2Comparing and judging tmaxIs the rotating limit time of the rotating contact shaft, and the rotating time of the rotating contact shaft exceeds tmaxTime-judging the rotation jamming of the movable contact shaft, delta tPreparation ofIs a time length early warning threshold value, delta t, for judging the rotation delay of the movable contact point shaftNewspaperJudging a time length alarm threshold value of the rotation delay of the movable contact point shaft;
the method for specifically judging whether the moving contact switching has hysteresis or not, and carrying out early warning and alarming is carried out according to the following steps:
the method comprises the following steps: program start, read in LPulling device、LExtension arm 、θLamax、θMax of extension、θCard 1、θCard 2、θExtension 1、θExtension 2、tmax、ΔtPreparation of、ΔtNewspaperValues, each of which is a predetermined value, are defined above.
Step two: reads the displacement data L of the action lever (ZD 9/ZDJ 9) 11, gives the value to L1, and delays the time for setting.
Step three: reads the displacement data L of the action lever (ZD 9/ZDJ 9) 11 and gives the value to L2.
Step four: Δ L = L2-L1 is calculated, and when Δ L =0, action lever (ZD 9/ZDJ 9) 11 does not move, and L1= L2 is returned to step three.
Step five: clearing the current moving contact conversion delay early warning or alarm information and blockage alarm information.
Step six: when DeltaL is greater than 0, the switch machine is switched to extend, if L2 is greater than or equal to LExtension armAnd giving a time value corresponding to L2 to t1, otherwise, making L1= L2, returning to the step three, when the delta L is less than 0, switching the switch machine to pull-in, and if the L2 is less than or equal to the L, switching the switch machine to pull-inPulling deviceAnd assigning a time value corresponding to the L2 to t1, otherwise, enabling the L1= L2, and returning to the step three.
Step seven: the timer is started to start timing.
Step eight: when the switch machine is switched to the extension mode, the angular displacement theta of the left movable contact point shaft (ZD 9/ZDJ 9) 9 is read, and when the switch machine is switched to the retraction mode, the angular displacement theta of the right movable contact point shaft (ZD 9/ZDJ 9) 6 is read.
Step nine: when the switch machine is switched to draw-in, if theta is more than or equal to thetaPulling deviceAssigning a time value corresponding to theta to t2, clearing the count value, and if theta is more than or equal to theta when the switch machine is switched to extendExtension armAssigning t2 with the time value corresponding to theta, clearing the count value, otherwise, checking whether the counter value exceeds tmaxIf not, returning to the step eight,
step ten: when the counter countsValue exceeding tmaxWhen the counter value is cleared,
if the switch machine is switched to pull-in, when theta is less than or equal to thetaDrawing 1When the alarm is turned, the jamming alarm information of the right movable contact point shaft (ZD 9/ZDJ 9) 6 not making the movable contact point separate from the 4 rows of static contact point groups (ZD 9/ZDJ 9) 5 is output, and when theta is turnedDrawing 1＜θ≤θDrawing 2When the alarm is in use, the blocking alarm information of the right movable contact point shaft (ZD 9/ZDJ 9) 6 corner making the movable contact point separate from 4 rows of static contact point groups (ZD 9/ZDJ 9) 5 but not connecting 3 rows of static contact point groups (ZD 9/ZDJ 9) 7 is output,
if the point switch is switched to extend, when theta is less than or equal to thetaExtension 1When the angle of the left movable contact point shaft (ZD 9/ZDJ 9) 9 is not making the movable contact point separate from the blocking alarm information of 1 row of static contact point group (ZD 9/ZDJ 9) 10, when theta isExtension 1＜θ≤θExtension 2When the alarm is in use, the blocking alarm information of the left movable contact point shaft (ZD 9/ZDJ 9) 9 turning angle to make the movable contact point separate from 1 row of static contact point group (ZD 9/ZDJ 9) 10 but not connect 2 rows of static contact point group (ZD 9/ZDJ 9) 8 is output,
when the counter value does not exceed tmaxCalculating the ratio of Δ t = t2-t1, if Δ t > Δ tNewspaperOutputting the conversion delay alarm information if Deltat is larger than DeltatPreparation ofOutputting early warning information of conversion delay;
step eleven: l1= L2, return to step three.
Example 2
The ZD9/ZDJ9 switch machine is used as an implementation object, except for monitoring a left movable contact point shaft (ZD 9/ZDJ 9) 9 and a right movable contact point shaft (ZD 9/ZDJ 9) 6, an action plate 13 fixedly connected with a locking mechanism active part push plate sleeve 12 is monitored, a third measuring part 4-1 is fixedly installed on the surface of the action plate 13, the third measuring part 4-1 is a magnetic grid, the length direction of the third measuring part is consistent with the movement direction of the action plate 13 after installation, a third reading head 4-2 is a magnetoelectric conversion device capable of converting the change of a magnetic field into an electric signal or a digital quantity, is fixedly installed on the same side with the third measuring part 4-1 and is aligned with the movement path of the magnetic grid, and the structure is the same as that of the embodiment 1 except that the measuring part and the detection head are not installed at an action rod (ZD 9/ZDJ 9).
Determining L over a range of displacement values for the action plate 13Pulling deviceAnd LExtension armNumerical value thereafterThe displacement value of the action plate 13 is used for replacing the displacement value of the action rod (ZD 9/ZDJ 9) 11 in the embodiment 1, and the method and the steps in the embodiment 1 are implemented, and are not described in detail.
Example 3
The ZD6 switch is implemented, in this type of switch, the locking gear 22 fixedly mounted on the main shaft 23 is a driving part, the locking gear 22 is in mesh transmission with the rack block 21, the action rod 20 of ZD6 connected with the rack block 21 is drawn in or extended out, after the action rod 20 and the rack block 21 of ZD6 move to the terminal position, the locking gear 22 continues to rotate for a certain angle, and other parts connected with the main shaft 23 control the rotation of the right side movable contact point shaft 16 of ZD6 and the left side movable contact point shaft 19 of ZD 6.
As shown in fig. 3, the monitoring device includes a data acquisition processing module 1, a first displacement monitoring module 2 composed of a first measuring member 2-1 and a first reading head 2-2, a second displacement monitoring module 3 composed of a second measuring member 3-1 and a second reading head 3-2, and a third displacement monitoring module 4 composed of a third measuring member 4-1 and a third reading head 4-2.
The first displacement monitoring module 2 and the second displacement monitoring module 3 are non-contact angular displacement measuring modules, the third displacement monitoring module 4 is a non-contact linear displacement measuring module, the first measuring piece 2-1 is fixedly arranged at the end of a left movable contact shaft 19 of ZD6, the second measuring piece 3-1 is fixedly arranged at the end of a right movable contact shaft 16 of ZD6, the third measuring piece 4-1 is fixedly arranged on the surface of an action rod 20 of ZD6, the first measuring piece 2-1 and the second measuring piece 3-1 are magnets magnetized in the radial direction, the interface of an N pole and an S pole of the first measuring piece 2-1 is superposed with the axial center of the left movable contact shaft 19 of ZD6 after being arranged, the interface of the N pole and the S pole of the second measuring piece 3-1 is superposed with the axial center of the right movable contact shaft 16 of ZD6 after being arranged, the third measuring piece 4-1 is a magnetic grid, and the length direction of the third measuring piece 4-1 is consistent with the movement direction of the action rod 20 of ZD6 after being arranged, the first reading head 2-2 and the second reading head 3-2 are magnetoelectric conversion devices capable of converting magnetic field changes into electric signals or digital quantities, the first reading head 2-2 is fixedly mounted on the same side of the first measuring part 2-1, a detection center of the first reading head 2-2 is aligned with an axis of the first measuring part 2-1, the second reading head 3-2 is fixedly mounted on the same side of the second measuring part 3-1, a detection center of the second reading head 3-2 is aligned with an axis of the second measuring part 3-1, the third reading head 4-2 is a magnetoelectric conversion device capable of converting magnetic field changes into electric signals or digital quantities, and is fixedly mounted on the same side of the third measuring part 4-1 and aligned with a movement path of a magnetic grid.
The data acquisition processing module 1 is connected with the first reading head 2-2, the second reading head 3-2 and the third reading head 4-2 through wires to transmit power and information, the data acquisition processing module 1 processes the received information to obtain angular displacement of a left movable contact shaft 19 of ZD6 and a right movable contact shaft 16 of ZD6 and linear displacement data of an action rod 20 of ZD6, calculates whether the time length from the moment that the action rod 20 of a switch machine ZD6 moves to a specified position (displacement amount) to the moment that the right movable contact shaft 16 of ZD6 rotates to connect with 2 rows of static contact groups 15 of ZD6 or the moment that the left movable contact shaft 19 of ZD6 rotates to connect with 3 rows of static contact groups 17 of ZD6 exceeds a specified threshold value or whether a contact conversion blocking phenomenon occurs, and gives an early warning and alarms according to the result.
Without loss of generality, when the operating rod right-extension switch machine is in a pull-in locking state, and the limit position of the operating rod 20 of ZD6 is taken as a zero position, the movement of the operating rod to the limit position of the extension locking state is the maximum displacement, and the zero position of the right moving contact point shaft 16 of ZD6 is defined as that 1 row of static contact point group 14 of ZD6 is reliably switched on, the angular displacement forward direction of the right moving contact point shaft 16 of ZD6 is defined as that 2 row of static contact point group 15 of ZD6, the zero position of the left moving contact point shaft 19 of ZD6 is defined as that 4 row of static contact point group 18 of ZD6 is reliably switched on, and the angular displacement forward direction of the left moving contact point shaft 19 of ZD6 is defined as that 3 row of static contact point group 17 of ZD6 is rotated.
After the zero position is determined, the detection value of the displacement of the action rod 20 of ZD6 is recorded as L, the detection value of the angular displacement of the movable contact point shaft which rotates rapidly after the action rod 20 of ZD6 is locked is recorded as theta, for a right-hand-stretching switch machine, after the action rod 20 of ZD6 is pulled in and locked, the theta is the angular displacement of the left movable contact point shaft 19 of ZD6, and after the action rod 20 of ZD6 is extended and locked, the theta is the angular displacement of the right movable contact point shaft 16 of ZD 6.
The following definitions are made:
Lpulling deviceThe action rod 20 of ZD6 is pulled in and locked, and the left movable contact point shaft 19 of ZD6 rotates at the beginning of the time-length timerA value of inter-judgment, LExtension armThe displacement values L and L of the action rod 20 of ZD6 are the judgment values of the starting time of the time length timing when the action rod 20 of ZD6 extends and locks, and the right movable contact point shaft 16 of ZD6 rotatesPulling deviceAnd LExtension armComparing, judging whether to start timing, thetaPulling deviceIs a time length counting end time judgment value theta of the rotation of the left movable contact point shaft 19 of ZD6 during the pulling and locking process of the action rod 20 of ZD6Extension armThe judgment value of the time counting ending time of the rotating time length of the right movable contact point shaft 16 of ZD6 is the angular displacement value theta and theta of the left movable contact point shaft 19 of ZD6 in the process of extending and locking the action rod 20 of ZD6Pulling deviceComparing or comparing the angular displacement value theta of ZD6 right hand movable contact shaft 16 with thetaExtension armComparing, judging whether to finish timing, thetaDrawing 1After the action rod 20 of ZD6 is pulled in and locked, the left movable contact point shaft 19 of ZD6 rotates to make the movable contact point controlled by the shaft disengage from the angular displacement judgment value theta of 4 rows of stationary contact point groups 18 of ZD6Drawing 2After the action rod 20 of ZD6 is pulled and locked, the left movable contact point shaft 19 of ZD6 rotates, and the controlled movable contact point is turned on the angular displacement judgment value theta of the 3 rows of stationary contact point groups 17 of ZD6Extension 1After the action rod 20 of ZD6 is extended and locked, the right movable contact point shaft 16 of ZD6 rotates to make the movable contact point controlled by the shaft disengage from the angular displacement judgment value theta of 1 row of stationary contact point group 14 of ZD6Extension 2After the action rod 20 of ZD6 is extended and locked, the right movable contact point shaft 16 of ZD6 rotates to make the controlled movable contact point switch on the angular displacement judgment value of 2 rows of static contact point groups 15 of ZD6, and the measured angular displacement value theta and theta of the movable contact point shaft are usedDrawing 1、θDrawing 2、θExtension 1、θExtension 2Comparing and judging tmaxIs the rotating limit time of the rotating contact shaft, and the rotating time of the rotating contact shaft exceeds tmaxTime-judging the rotation jamming of the movable contact shaft, delta tPreparation ofIs a time length early warning threshold value, delta t, for judging the rotation delay of the movable contact point shaftNewspaperJudging a time length alarm threshold value of the rotation delay of the movable contact point shaft;
the method for specifically judging whether the moving contact switching has hysteresis or not, and carrying out early warning and alarming is carried out according to the following steps:
the method comprises the following steps: program start, read in LPulling device、LExtension arm 、θLamax、θMax of extension、θCard 1、θCard 2、θExtension 1、θExtension 2、tmax、ΔtPreparation of、ΔtNewspaperValues, each of which is a predetermined value, are defined above.
Step two: reads displacement data L of the action lever 20 of ZD6, gives the value to L1, and delays the time to set.
Step three: reads displacement data L of the action lever 20 of ZD6, and gives the value to L2.
Step four: calculating Δ L = L2-L1, and when Δ L =0, action lever 20 of ZD6 does not move, and let L1= L2, return to step three.
Step five: clearing the current moving contact conversion delay early warning or alarm information and blockage alarm information.
Step six: when DeltaL is greater than 0, the switch machine is switched to extend, if L2 is greater than or equal to LExtension armAnd giving a time value corresponding to L2 to t1, otherwise, making L1= L2, returning to the step three, when the delta L is less than 0, switching the switch machine to pull-in, and if the L2 is less than or equal to the L, switching the switch machine to pull-inPulling deviceAnd assigning a time value corresponding to the L2 to t1, otherwise, enabling the L1= L2, and returning to the step three.
Step seven: the timer is started to start timing.
Step eight: when the switch machine is switched to the extension mode, the angular displacement theta of the right movable contact point shaft 16 of ZD6 is read, and when the switch machine is switched to the retraction mode, the angular displacement theta of the left movable contact point shaft 19 of ZD6 is read.
Step nine: when the switch machine is switched to draw-in, if theta is more than or equal to thetaPulling deviceAssigning t2 to the time value corresponding to theta, clearing the count value, and switching the point switch to extend if theta is larger than or equal to thetaExtension armAssigning t2 with the time value corresponding to theta, clearing the count value, otherwise, checking whether the counter value exceeds tmaxIf not, returning to the step eight,
step ten: when the counter value exceeds tmaxWhen the counter value is cleared,
if the switch machine is switched to pull-in, when theta is less than or equal to thetaDrawing 1When the angle of the left movable contact shaft 19 of ZD6 is not rotating, the jamming alarm information of 4 rows of static contact groups 18 of ZD6 is output, and when theta isDrawing 1＜θ≤θDrawing 2When the alarm is output, the rotating angle of the left movable contact shaft 19 of ZD6 makes the movable contact separate from the 4 rows of static contact groups 18 of ZD6 but does not connect the 3 rows of static contact groups 17 of ZD6,
if the point switch is switched to extend, when theta is less than or equal to thetaExtension 1When the angle of the right movable contact point shaft 16 of ZD6 does not make the movable contact point separate from the 1 row of static contact point group 14 of ZD6, the jamming alarm information is output, and when theta isExtension 1＜θ≤θExtension 2When the angle of the right movable contact point shaft 16 of ZD6 is output, the movable contact point is separated from 1 row of static contact point group 14 of ZD6 but the jamming alarm information of 2 rows of static contact point group 15 of ZD6 is not switched on,
when the counter value does not exceed tmaxCalculating the ratio of Δ t = t2-t1, if Δ t > Δ tNewspaperOutputting the conversion delay alarm information if Deltat is larger than DeltatPreparation ofOutputting conversion delay early warning information;
step eleven: l1= L2, return to step three.
Example 4
The method is implemented in a ZD6 switch machine, a third displacement monitoring module 4 is a non-contact angular displacement measuring module, a third measuring part 4-1 is a radial magnetized magnet and is fixedly installed at the end of a main shaft 23, the interface of the N pole and the S pole of the third measuring part is overlapped with the axis of the main shaft 23 after the third measuring part is installed, a third reading head 4-2 is a magneto-electric conversion device capable of converting the change of a magnetic field into an electric signal or digital quantity and is fixedly installed at the same side of the third measuring part 4-1, the detection center of the third reading head 4-2 is aligned with the rotating axis of the third measuring part 4-1, and the method is the same as the embodiment 3 except that the measuring part is not installed on an action rod 20 of the ZD6 and no corresponding detection head is arranged at the same side.
Predetermining L in the range of values of angular displacement of the main shaft according to the above principlePulling deviceAnd LExtension armNumerical values. The displacement monitoring value of the action rod 20 of ZD6 is replaced by the displacement monitoring value of the main shaft 23, and the method and the steps of embodiment 3 are performed, and the rest is the same as embodiment 3, and will not be described in detail.
The non-contact first angular displacement monitoring module 2 and the non-contact second angular displacement monitoring module 3 in the utility model are both composed of a measuring part and a reading head, the rotating axis of the measuring part is aligned with the detection center of the reading head, and a certain distance is kept between the measuring part and the reading head, the measuring part is a magnetic column magnetized in the radial direction, the reading head is an IC or a circuit capable of converting the angular displacement of the magnetic column into an electric signal or a digital quantity, the non-contact third angular displacement or linear displacement monitoring module 4 is also composed of the measuring part and the reading head, when the non-contact third angular displacement or linear displacement monitoring module is used for measuring the angular displacement, the measuring part and the reading head which are the same as the non-contact first angular displacement monitoring module 2 or the non-contact second angular displacement monitoring module 3 are used for measuring the linear displacement, the measuring part uses a magnetic grid, the reading head is an IC or a circuit capable of converting the linear displacement of the magnetic grid into the electric signal or the digital quantity, after the installation, the reading head is aligned with the moving path of the magnetic grid, and a certain distance is kept between the two, and the orthographic projection of the reading head is on the magnetic grid within the detection range.
In the utility model, a switch machine usually has two groups of movable contact shafts (called as a left movable contact shaft and a right movable contact shaft in the utility model) which respectively drive one group of movable contacts to rotate, each group of movable contacts corresponds to two fixed contact groups, the movable contacts rotate for a certain angle under the control of related parts and springs, one fixed contact group is switched on after the other fixed contact group is switched off, angular displacement measuring parts are respectively and fixedly installed at the end heads of the left movable contact shaft and the right movable contact shaft and rotate along with the left movable contact shaft and the right movable contact shaft, reading heads are fixedly installed at the same side of the angular displacement measuring parts and are aligned with the rotating axes of the angular displacement measuring parts to measure the angular displacement of the movable contacts.
The foregoing is a further detailed description of the utility model in connection with specific preferred embodiments and it is not intended to limit the utility model to the specific embodiments described. For those skilled in the art to which the utility model pertains, several simple deductions or substitutions can be made without departing from the spirit of the utility model, and all shall be considered as belonging to the protection scope of the utility model.
Claims (7)
1. A detection device for a switch machine movable contact switching fault is characterized in that: it includes: the device comprises a data acquisition and processing module (1), a first displacement monitoring module (2), a second displacement monitoring module (3) and a third displacement monitoring module (4), wherein the first displacement monitoring module (2) consists of a first measuring part (2-1) and a first reading head (2-2), the second displacement monitoring module (3) consists of a second measuring part (3-1) and a second reading head (3-2), the third displacement monitoring module (4) consists of a third measuring part (4-1) and a third reading head (4-2), each measuring part and the corresponding reading head are kept at a certain distance and are in a non-contact state, the first displacement monitoring module (2) and the second displacement monitoring module (3) are non-contact angular displacement measuring devices, and the third displacement monitoring module (4) is a non-contact angular displacement measuring device or a non-contact linear displacement measuring device, the data acquisition and processing module (1) and the reading heads are in information transmission and are connected in a wired or wireless mode, each displacement monitoring module and each data acquisition and processing module are respectively supplied with power by a power supply or the power supply is supplied to the data acquisition and processing module (1) and then are distributed to each displacement monitoring module, the first measuring piece (2-1) is fixedly arranged at the end of a left moving contact shaft (9) or a left moving contact shaft (19) of ZD6, the second measuring piece (3-1) is fixedly arranged at the end of a right moving contact shaft (6) or a right moving contact shaft (16) of ZD6, the first reading head (2-2) is fixed at the same side of the first measuring piece (2-1), the detection center of the first reading head (2-2) is aligned with the axis of the first measuring piece (2-1), the second reading head (3-2) is fixed at the same side of the second measuring piece (3-1), and the detection center of the second reading head (3-2) is aligned with the axis of the second measuring part (3-1), when the third displacement monitoring module (4) is a non-contact linear displacement measuring device, the third measuring part (4-1) is fixedly arranged on the surface of the action rod (11) or the action rod (20) of ZD6 or the surface of the action plate (13), the third reading head (4-2) is fixed on the same side of the third measuring part (4-1), the orthographic projection of the third reading head (4-2) in the measuring range is on the third measuring part (4-1), when the third displacement monitoring module (4) is a non-contact angular displacement measuring device, the third measuring part (4-1) is fixedly arranged at the end of the main shaft (23), the third reading head (4-2) is fixed on the same side of the third measuring part (4-1), and the detection center of the third reading head (4-2) is aligned with the axis of the third measuring part (4-1), the data acquisition and processing module (1) processes and calculates the detected information data, and carries out early warning and alarm on the conversion delay of the movable contact, and carries out alarm on the fault of the conversion jamming.
2. The apparatus for detecting a switch machine contact switching failure as claimed in claim 1, wherein: the first measuring piece (2-1) and the second measuring piece (3-1) are magnetic columns magnetized in the radial direction, and the interface of the N pole and the S pole is aligned with the axis of the rotating shaft after the magnetic columns are installed.
3. The apparatus for detecting a switch machine contact switching failure as claimed in claim 1, wherein: the first reading head (2-2) and the second reading head (3-2) are ICs or circuits which can convert the angular displacement of the radial magnetized magnetic column into an electric signal or a digital quantity.
4. The apparatus for detecting a switch machine contact switching failure as claimed in claim 1, wherein: the third measuring piece (4-1) is a magnetic column magnetized in the radial direction, and the interface of the N pole and the S pole is aligned with the axis of the rotating shaft after the third measuring piece is installed.
5. The apparatus for detecting a switch machine contact switching failure as claimed in claim 1, wherein: the third measuring part (4-1) is a magnetic grid, and the length direction and the moving direction of the third measuring part are parallel when the third measuring part is fixedly arranged on the surface of the linear moving part.
6. A switch machine contact switching failure detection apparatus as claimed in claim 1: the third reading head (4-2) is an IC or a circuit which can convert the angular displacement of the radial magnetized magnetic column into an electric signal or a digital quantity.
7. A switch machine contact switching fault detection device according to claim 1, the third reading head (4-2) being an IC or circuit capable of converting the magnetic grid line displacement into an electrical signal or digital quantity.
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| CN202220101178.5U CN216791145U (en) | 2022-01-15 | 2022-01-15 | Detection apparatus for goat power contact conversion trouble |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114485515A (en) * | 2022-01-15 | 2022-05-13 | 西安铁路信号有限责任公司 | Method and device for detecting switching fault of movable contact of switch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114485515A (en) * | 2022-01-15 | 2022-05-13 | 西安铁路信号有限责任公司 | Method and device for detecting switching fault of movable contact of switch |
| CN114485515B (en) * | 2022-01-15 | 2024-02-27 | 西安铁路信号有限责任公司 | Method and device for detecting switching faults of movable contact points of switch machine |
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