Method for judging switch machine action lever conversion jam fault mode

Abstract

The application is a kind of judgment method for switching machine action lever conversion jam fault mode, the switching machine starts conversion, and the conversion time is timed, the action lever of the switching machine is preliminarily judged whether to jam during the conversion process, and the jam position is recorded in the array, after the conversion of the switching machine is completed or the conversion time exceeds the limit value, whether the conversion process is jammed or whether it is jammed and cannot complete the conversion is judged according to the conversion time of the switching machine, when the switching machine is jammed, the specific position of the jam is judged according to the data in the jam position record array, when the switching machine is jammed, the switching machine action lever conversion jam fault mode is judged according to the final stop position of the switching machine action lever or the stroke of the conversion process, which helps the maintenance personnel to intervene in maintenance in time, prevents the occurrence of jam fault, speeds up the positioning and disposal of jam fault, thereby improving the reliability of the switching machine, reducing various influences and losses caused by the switching machine action lever conversion jam.

Description

Technical Field

[0001] The present invention belongs to a turnout switching equipment auxiliary system in the field of rail transit, and relates to a method for determining the fault mode of a switch machine operating rod switching jam. According to the parameters and status of the switch machine operating rod, the cause of the switch machine switching jam is determined, and maintenance personnel are guided to handle the problem. Background Art

[0002] The switch machine is used to switch and lock the turnout. When the switch machine's operating rod is stuck, its function of switching the turnout fails. In addition, statistics show that due to various reasons, the failure of the switch machine's operating rod to switch is stuck and the turnout cannot be switched accounts for a high proportion of turnout failures.

[0003] When the switch operating rod is stuck and cannot switch the switch, the train will not be able to pass through the switch as planned, thus delaying the operation. Usually, maintenance personnel need to deal with it urgently and temporarily to minimize delays, reduce economic losses and reduce social impact. However, since the switch is a remote-controlled device, when it gets stuck, the location of the jam is unknown, the cause of the jam is unknown, and it is even unknown whether it is a jam (the fault manifestation is only no positioning indication or no reverse position indication) or other faults that cause no positioning indication or reverse position indication. Therefore, when handling the fault, it is necessary to check each item one by one, which may make the fault handling take a long time. If it can be determined that the switch operating rod is stuck when the fault occurs, and the jam location can be clearly identified, and then a preliminary fault cause and solution are determined based on the fault mode, then the fault handling will save time and effort.

[0004] For the specific meanings of the characters and symbols described below, please refer to the description of the characters and symbols in the "Specific Implementation Method" section.

[0005] When the switch machine operating rod is extending or pulling in,

[0006] When ΔS≤δ, the switch machine is in the process of internal unlocking;

[0007] When δ<ΔS≤L 解 When the switch machine is in the process of unlocking the external locking drive;

[0008] When L 解 <ΔS≤LL 锁 When the switch machine is in the process of driving external locking and the movable part of the turnout is being converted;

[0009] When LL 锁 When <ΔS≤L-δ, the switch machine is in the process of driving external locking;

[0010] When L-δ<ΔS, the switch is in the locking process.

[0011] If the turnout is an internal locking system, there is no external locking unlocking and locking process, whether in the process of extending or pulling the operating rod of the switch machine,

[0012] When ΔS≤δ, the switch machine is in the process of internal unlocking;

[0013] When δ<ΔS≤L-δ, the switch machine is in the process of driving the movable part of the turnout to switch;

[0014] When L-δ<ΔS, the switch is in the locking process.

[0015] It can be seen that by accurately measuring the displacement of the switch machine's operating rod, combined with the specific structural parameters of the switch machine and the characteristic parameters of the turnout, the state of the switch machine can be judged according to the current stroke of the operating rod. Then, according to the state of the switch machine when the operating rod is stuck or blocked, combined with other information, the cause of the blocking of the operating rod can be analyzed and determined.

[0016] More specific reasons for the action rod conversion jam or stuck need to be refined based on the above. For example, the specific reasons why the conversion locking mechanism in the switch machine cannot be unlocked can be further divided into: severe wear or damage to the conversion locking mechanism, loss of power of the motor, etc. More detailed information is needed to clarify the specific cause of the fault.

[0017] Once the working status of the switch machine's operating rod when it is stuck or jammed is clear, or the fault mode is clear, the fault location can be determined and the repair and maintenance area can be identified. Combined with other information, the cause of the fault can be analyzed as soon as possible and the solution can be determined, which is conducive to maintenance personnel to quickly troubleshoot the fault and shorten the fault processing time. Summary of the Invention

[0018] The purpose of the present invention is to provide a method for determining the fault mode of a switch machine operating rod conversion jam, so as to identify the abnormal state of the switch machine operating rod conversion jam or stuck, and then determine the location and cause of the switch machine operating rod conversion jam or stuck, guide maintenance personnel to reach the fault location as early as possible, accurately handle the fault, and improve fault handling efficiency.

[0019] The technical solution of the present invention is to provide a method for determining a switch machine operating rod conversion jam fault mode, characterized in that: a switch machine motor, an active part of a conversion locking mechanism, and a switch machine operating rod are selected, respectively denoted as a motor, an active part, and an operating rod; the motor current I or rotation speed n, the active part speed (rotation speed) V, and the operating rod displacement S are monitored; a timer is used to count from the start of the switch machine conversion and record the switch machine conversion time t; the motor current I or rotation speed n and the active part speed (rotation speed) V are used to determine whether the switch machine is in an operating rod conversion jam or jam state; when the switch machine is in an operating rod conversion jam state, the operating rod displacement S is used to determine an operating rod jam fault mode, and an alarm message and maintenance guidance information are output; the switch machine conversion time t is used to determine whether an operating rod jam or conversion jam occurs during the switch machine conversion process.

[0020] The specific method for judging the fault mode of the switch machine operating rod conversion jam is as follows:

[0021] Follow the steps below to perform the main program for recording the status of the switch machine's operating rod switching jam and resistance parameters and judging the fault mode:

[0022] Step 1: Read I 阈， n 阈， t 阈1， t 阈2， V 阈 , the displacement variation distinction value C;

[0023] Step 2: Clear the timer and array D;

[0024] Step 3: Read in S, I, n, S 初 =S;

[0025] Step 4: When I>I 阈 or n>n 阈 When the switch machine starts to switch, the timer starts to count, j=1, D j =0, otherwise return to step 3;

[0026] Step 5: Read in S, V, I, n;

[0027] Step 6: ΔS=ABS(SS 初 );

[0028] Step 7: When V≤V 阈 And ΔS-D j ≥C, (C is the difference between the displacement changes. When it is less than C, no difference is made. For example, when C is 0.5mm, no processing is performed if the change does not exceed 0.5. If the difference needs to be adjusted, just modify this value), j=j+1, D j =ΔS, otherwise proceed to the next step;

[0029] Step 8: When I≤I 阈 and n≤n 阈 When the timer value t≥t 阈2 , the timer stops timing, k=j, otherwise, return to step five;

[0030] Step 9: If t≤t 阈1 , the conversion is normal, if t 阈1 <t<t 阈2 , if the conversion is stuck, execute the stuck position judgment subroutine; otherwise, if the conversion is blocked, execute the blocked position judgment subroutine;

[0031] Step 10: ΔS=0, k=0, return to step 2.

[0032] The stutter position determination subroutine is performed as follows:

[0033] Step 1: Read in the stroke parameter L of the action rod and the motion judgment constant δ;

[0034] Step 2: For all D 2≤j≤k j Check and determine the cause and location of the jam, and classify and count them. After checking all D j Then end the program;

[0035] If the switch machine is equipped with external locking turnout, read the external locking parameter L 解 and L 锁 ,

[0036] When D j When ≤δ, the switch machine has been stuck during the unlocking process;

[0037] When δ<D j ≤L 解 There was a jam during the process of the switch machine driving the external lock and unlock;

[0038] When L 解 <D j ≤LL 锁 When the switch machine drives the turnout during the conversion process, a jam occurred;

[0039] When LL 锁 <D j When ≤L-δ, the switch machine drives the external lock to lock and there is a jam;

[0040] When L-δ<D j When the switch machine was locked, it was jammed;

[0041] If the switch machine is equipped with an internal locking turnout,

[0042] When Dj When ≤δ, the switch machine has been stuck during the unlocking process;

[0043] When δ<D j When ≤L-δ, a jam occurred during the process of the switch machine driving the movable part of the turnout to switch (movement of the action rod);

[0044] When L-δ<D j There was a jam during the internal locking process of the switch machine.

[0045] The blocking position determination subroutine is performed as follows:

[0046] Step 1: Read in the stroke parameter L of the action rod and the motion judgment constant δ;

[0047] Step 2: Check the ΔS value to determine the cause and location of the jam;

[0048] If the switch machine is equipped with external locking turnout, read the external locking parameter L 解 and L 锁 ;

[0049] When ΔS≤δ, the switch machine is stuck during the unlocking process, and the program ends;

[0050] Otherwise, when δ<ΔS≤L 解 When the switch machine drives the external lock and unlock process, a jam occurs and the program ends;

[0051] When L 解 <ΔS≤LL 锁 When the switch machine drives the turnout during the conversion process, a jam occurs and the program ends;

[0052] When LL 锁 When <ΔS≤L-δ, the switch machine drives the external lock to lock and a jam occurs during the locking process, and the program ends;

[0053] When L-δ<ΔS, the switch machine is blocked during the internal locking process and the program ends;

[0054] If the switch machine is equipped with an internal locking turnout,

[0055] When ΔS≤δ, the switch machine is stuck during the unlocking process, and the program ends;

[0056] Otherwise, when δ<ΔS≤L-δ, a jam occurs during the process of the switch machine driving the movable part of the turnout to perform conversion (movement of the action rod), and the program ends.

[0057] When L-δ<ΔS, the switch machine is stuck during the internal locking process, and the program ends.

[0058] The advantages of the present invention are that after the switch machine starts switching, its switching time is timed. During the switching process, it is preliminarily determined whether its operating rod is stuck, and the stuck position is recorded in an array. After the switch machine is switched or the switching time exceeds a limit value, it is determined whether the switching process is stuck or whether the switching is blocked and cannot be completed based on the switching time. When the switch machine is stuck, the specific location where the jam occurs is determined based on the data in the stuck position recording array. When the switch machine is stuck, the switch machine operating rod switching jam failure mode is determined based on the final stop position of the switch machine operating rod or the stroke of the switching process. Ultimately, it helps maintenance personnel intervene in maintenance in a timely manner, prevents the occurrence of jam failures, and speeds up the location and handling of jam failures, thereby improving the reliability of the switch machine and reducing various impacts and losses caused by the switching jam of the switch machine operating rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 It is the main flow chart of the detection method of the present invention;

[0060] Figure 2 This is the flow chart of the subroutine for determining the position of the jam;

[0061] Figure 3 This is the flow chart of the jam position judgment subroutine. DETAILED DESCRIPTION

[0062] In order to further illustrate the technical means and methods adopted by the present invention to achieve the predetermined purpose, the specific implementation methods, structural features and methods of the present invention are described in detail below with reference to the accompanying drawings and examples.

[0063] In the present invention, the following characters and symbols have fixed meanings in the specification and are explained as follows:

[0064] L: Indicates that the limit position where the operating rod starts to move is the starting point of the stroke, and the other limit position where the operating rod stops moving is the end point of the stroke. Assuming that the extending and pulling strokes of the operating rod are equal during a complete switching process of the switch machine, the stroke of the operating rod is L;

[0065] L 解 : Indicates the distance the action rod travels from the extreme position as the starting point of the stroke to the end point when the external lock is unlocked and the close contact rail begins to move away from it.

[0066] L 锁 : Indicates the distance the operating rod moves from the external locking position to the locked position as the starting point of the stroke, and the distance the operating rod moves to the limit position and stops as the end point of the stroke.

[0067] S: indicates the current displacement value of the action rod;

[0068] S初 : Indicates the displacement value corresponding to the extreme position when the action rod starts to move;

[0069] ABS(): means taking the absolute value of the value in the brackets;

[0070] ΔS: The current position of the action rod is the end point of the stroke, and the limit position when the action rod starts to move is the starting point of the stroke. The stroke of the action rod during this process is recorded as the current stroke of the action rod. Its value is expressed as ΔS=ABS(SS 初 );

[0071] δ: represents the selected constant used to replace zero. Its value is very small, but should be greater than the jitter value of the detection system to reduce false positives.

[0072] n: represents the detected speed value of the motor in the switch machine or the detected speed value of other parts that are linearly related to its speed;

[0073] I: indicates the current detection value of the motor in the switch machine;

[0074] V: indicates the speed or rotation speed detection value of the active parts in the switch locking mechanism;

[0075] t: indicates that the timer is used to count from the start of the switch machine to the current recorded switch machine switching time;

[0076] I 阈 : Indicates the current threshold for judging the working state of the motor. When I>I 阈 When the motor is powered on, the switch machine starts switching;

[0077] n 阈 : Indicates the speed threshold for judging the working state of the switch machine. When n>n 阈 When , it is determined that the switch machine starts to switch;

[0078] t 阈1 : Indicates the time limit threshold for judging that the switch machine has completed the conversion normally. When the timer stops, t≤t 阈1 When the switch machine is switched, the switching process is normal, and no obvious jamming of the action rod occurs;

[0079] t 阈2 : Indicates the maximum time allowed for the switch machine conversion process. After the timer stops, if t≥t 阈2 When the switch machine fails to complete the conversion within the maximum time limit;

[0080] V 阈 : Indicates the speed threshold of the action rod for judging whether the switch machine is stuck. It is pre-set based on experience and data, or calculated based on the detected speed n;

[0081] C: represents the action rod displacement change difference value, which is a pre-set constant. Its purpose is to prevent the action rod stuck position record array from being too large. The action rod stuck position is only recorded after the action rod displacement relative to the previous stuck position is greater than C.

[0082] D: represents the array of action rod stroke records when a jam occurs. The first element of this array is zero, that is, D1=0. Starting from the second element, the action rod strokes when a jam occurs during the action rod conversion process are recorded in sequence, and the absolute value of the difference between two adjacent elements is greater than C;

[0083] D j : represents the j-th element of array D;

[0084] K: represents the number of elements in array D.

[0085] Example 1

[0086] The ZD9 / ZDJ9 switch machine with internal locking turnout is used as the implementation object. According to the structural parameters and characteristics of the ZD9 / ZDJ9 switch machine, the push plate sleeve is the active part of the conversion locking mechanism. Since the push plate sleeve and the operating plate are fixed as one, the displacement of the operating plate is monitored and the speed is calculated, which is recorded as the active part speed V. The speed ratio of the gear shaft and the motor shaft is fixed. The gear shaft speed is monitored and the motor speed is calculated based on it, or the motor working current is monitored, which are recorded as the motor speed n and the motor working current I respectively. The displacement of the operating rod is monitored and recorded as the operating rod displacement S.

[0087] Use the above-mentioned fixed meaning characters and symbols to describe. Figure 1 As shown, the following steps are specifically used to determine the blocking state and fault mode of the switch operating rod conversion:

[0088] Step 1: Read I 阈， n 阈， t 阈1， t 阈2， V 阈 , the displacement variation distinction value C;

[0089] Step 2: Clear the timer and array D;

[0090] Step 3: Read in S, I, n, S 初 =S,S 初 It is the initial displacement value of the action rod when the switch machine starts to switch;

[0091] Step 4: When I>I 阈 or n>n 阈 When the switch machine starts to switch, the timer starts to count, j=1, D j =0, otherwise return to step 3;

[0092] Step 5: Read in S, V, I, n;

[0093] Step 6: ΔS=ABS(SS 初 );

[0094] Step 7: When V≤V 阈 And ΔS-D j ≥C, (C is the difference between the displacement changes. When it is less than C, no difference is made. For example, when C is 0.5mm, no processing is performed if the change does not exceed 0.5. If the difference needs to be adjusted, just modify this value), j=j+1, D j =ΔS, otherwise proceed to the next step;

[0095] Step 8: When I≤I 阈 and n≤n 阈 When the timer value t≥t 阈2 , the timer stops timing, k=j, otherwise, return to step five;

[0096] Step 9: If t≤t 阈1 , the conversion is normal, if t 阈1 <t<t 阈2 , if the conversion is stuck, execute the stuck position judgment subroutine; otherwise, if the conversion is blocked, execute the blocked position judgment subroutine;

[0097] Step 10: ΔS=0, k=0, return to step 2.

[0098] like Figure 2 As shown, the stutter position determination subroutine is performed according to the following steps:

[0099] Step 1: Read in the stroke parameter L of the action rod and the motion judgment constant δ;

[0100] Step 2: j=1;

[0101] Step 3: j=j+1;

[0102] Step 4: If j>k, end the program;

[0103] Step 5: If D j ≤δ, output "the switch machine was stuck during the unlocking process"; otherwise, if δ<D j ≤L-δ, output "a jam occurred during the switch machine driving the turnout movable part to switch (movement of the action rod); otherwise, output "a jam occurred during the switch machine internal locking process";

[0104] Step 6: Return to step 3;

[0105] like Figure 3 As shown, the blocking position determination subroutine is performed according to the following steps:

[0106] Step 1: Read in the stroke parameter L of the action rod and the motion judgment constant δ;

[0107] Step 2: If ΔS≤δ, output "the switch machine is stuck during the unlocking process inside the machine" and end the program;

[0108] Step 3: If δ<D j When ≤L-δ, the output is "the switch machine drives the movable part of the turnout to switch (movement of the action rod) and a jam occurs during the process", and the program ends;

[0109] Step 4: Output "The switch machine is stuck during the internal locking process" and end the program.

[0110] Example 2

[0111] The ZD9 / ZDJ9 switch machine with external locking turnout is used as the implementation object. After the switch machine is unlocked, the operating rod starts to move. At this time, the operating rod stroke is zero. From the start of the operating rod movement to the completion of the external locking and unlocking, the close contact rail begins to move away from the rail. The operating rod stroke is L 解 From the beginning of the external locking to the locking process until the action rod moves to the position and stops, the stroke of the action rod is L 锁 The rest is the same as Example 1 and will not be described in detail.

[0112] The specific steps for converting the blocking state of the switch machine operating rod and determining the fault mode are the same as those in Example 1 and will not be described in detail.

[0113] The jam position determination subroutine is performed as follows:

[0114] Step 1: Read in the stroke parameter L of the action rod and the motion judgment constant δ;

[0115] Step 2: Read in the external locking parameter L 解 and L 锁 ;

[0116] Step 3: j=1;

[0117] Step 4: j=j+1;

[0118] Step 5: If j>k, end the program;

[0119] Step 6: If D j ≤δ, output "the switch machine has been stuck during the unlocking process inside the machine"; otherwise, if δ<D j ≤L 解 , output "the switch machine drive external lock unlocking process has been stuck"; otherwise, if L 解 <D j ≤LL 锁When LL is set, the output is "the switch machine has been stuck during the switch conversion process"; otherwise, if LL 锁 <D j When ≤L-δ, the output is "the switch machine has been stuck during the locking process of the external lock"; otherwise, the output is "the switch machine has been stuck during the locking process of the internal lock";

[0120] Step 7: Return to step 4.

[0121] The blocking position determination subroutine is performed as follows:

[0122] Step 1: Read in the stroke parameter L of the action rod and the motion judgment constant δ;

[0123] Step 2: Read in the external locking parameter L 解 and L 锁 ;

[0124] Step 3: If ΔS≤δ, output "the switch machine is stuck during the unlocking process inside the machine" and end the program;

[0125] Step 4: If δ<ΔS≤L 解 When the switch machine is driven by the external lock and unlock process, the output is "stuck", and the program ends;

[0126] Step 5: If L 解 <ΔS≤LL 锁 When the external lock is unlocked, the output is "After the switch machine drives the turnout to switch, it is blocked" and the program ends;

[0127] Step 6: If LL 锁 When <ΔS≤L-δ, the output is “the switch machine drives the external lock to be blocked during the locking process”, and the program ends;

[0128] Step 7: Output "The switch machine is stuck during the internal locking process" and end the program.

[0129] Example 3

[0130] The ZD6 switch machine with internal locking turnout is used as the implementation object. According to the structural parameters and characteristics of the ZD6 switch machine, the locking gear is the active part of the conversion locking mechanism. Since the locking gear and the main shaft are fixed as one, the main shaft angle is monitored and its speed is calculated, which is recorded as the active part speed V. The motor shaft speed is directly monitored or the speed is calculated after monitoring its angle, or the motor working current is monitored, which are recorded as motor speed n and motor working current I respectively. The displacement of the operating rod is monitored and recorded as the operating rod displacement S (the initial displacement is zero).

[0131] The specific steps for converting the blocking state of the switch machine operating rod and determining the fault mode are the same as those in Example 1 and will not be described in detail.

[0132] The specific steps of the jam position determination subroutine are the same as those in Example 1 and will not be described in detail.

[0133] The specific steps of the blocking position determination subroutine are the same as those in Example 1 and will not be described in detail.

[0134] The above is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A method for determining a switching jam failure mode of a switch operating lever, characterized by: The process and steps include: according to the determined switch machine structural parameters and characteristics, select the I 阈 , n 阈 , t 阈1 , t 阈2 , V 阈 , the action rod displacement change value C is used to determine the action rod conversion jam failure mode according to the following steps: Step 1: Read I 阈 , n 阈 , t 阈1 , t 阈2 , V 阈 , the action rod displacement variation distinction value C; Step 2: The timer is reset, and the action rod stroke record array D is reset when a jam occurs; Step 3: Read in S, I, n, S 初 =S,S 初 It is the displacement value corresponding to the extreme position when the switch machine action rod starts to move; Step 4: When I>I 阈 or n>n 阈 When the switch machine starts to switch, the timer starts to count, j=1, D j =0 otherwise return to step 3; Step 5: Read in S, V, I, n; Step 6: ΔS=ABS(SS 初 ); Step 7: When V≤V 阈 , and ΔS-D j ≥C, C is the displacement change value of the action rod, j=j+1, D j =ΔS, otherwise proceed to the next step; Step 8: When I≤I 阈 and n≤n 阈 When the timer value t≥t 阈2 , the timer stops timing, k=j, otherwise, return to step five; Step 9: If t≤t 阈1 , the conversion is normal, if t 阈1 <t<t 阈2 , if the conversion is stuck, execute the stuck position judgment subroutine; otherwise, if the conversion is blocked, execute the blocked position judgment subroutine; Step 10: ΔS=0, k=0, return to step 2; I 阈 : Indicates the current threshold for judging the working state of the motor. When I>I 阈 When the motor is powered on, the switch machine starts switching; n 阈 : Indicates the speed threshold for judging the working state of the switch machine. When n>n 阈 When , it is determined that the switch machine starts to switch; t 阈1 : Indicates the time limit threshold for judging that the switch machine has completed the conversion normally. When the timer stops, t≤t 阈1 When the switch machine is switched, the switching process is normal, and no obvious jamming of the action rod occurs; t 阈2 : Indicates the maximum time allowed for the switch machine conversion process. After the timer stops, if t≥t 阈2 When the switch machine fails to complete the conversion within the maximum time limit; V 阈 : Indicates the speed threshold of the action rod for judging whether the switch machine is stuck. It is pre-set based on experience and data, or calculated based on the detected speed n; D: represents the array of action rod stroke records when a jam occurs. The first element of this array is zero, that is, D1=0. Starting from the second element, the action rod strokes when a jam occurs during the action rod conversion process are recorded in sequence, and the absolute value of the difference between two adjacent elements is greater than C; S: indicates the current displacement value of the action rod; I: indicates the current detection value of the motor in the switch machine; n: represents the detected speed value of the motor in the switch machine or the detected speed value of other parts that are linearly related to its speed; S 初 : Indicates the displacement value corresponding to the extreme position when the action rod starts to move; D j : represents the j-th element of array D; V: indicates the speed or rotation speed detection value of the active parts in the switch locking mechanism; ABS(): means taking the absolute value of the value in the brackets; ΔS: The current position of the action rod is the end point of the stroke, and the limit position when the action rod starts to move is the starting point of the stroke. The stroke of the action rod during this process is recorded as the current stroke of the action rod. Its value is expressed as ΔS=ABS(SS 初 ); t: indicates that the timer is used to count from the start of the switch machine to the current recorded switch machine switching time; C: represents the action rod displacement change difference value, which is a pre-set constant. Its purpose is to prevent the action rod stuck position record array from being too large. The action rod stuck position is recorded only after the action rod displacement relative to the previous stuck position is greater than C; K: represents the number of elements in array D.

2. The method for determining a switching jam failure mode of a switch operating rod according to claim 1, wherein: Select the switch machine motor or other parts proportional to the motor speed, the active parts of the conversion locking mechanism and the switch machine's actuating rod, monitor the motor's current detection value I or the motor speed detection value in the switch machine or the speed n of other parts proportional to the motor speed, the speed or speed detection value V of the active parts in the switch machine's locking mechanism, and the current displacement value S of the actuating rod. Use the current detection value I of the motor in the switch machine or the motor speed detection value in the switch machine or the speed detection value n of other parts linearly related to its speed and the speed or speed detection value V of the active parts in the switch machine's locking mechanism to determine whether the switch machine is in the actuating rod conversion blocking state. When the switch machine is in the actuating rod conversion blocking state, use the current displacement value S of the actuating rod and the displacement value S corresponding to the extreme position when the actuating rod starts to move. 初 The absolute value of the difference ΔS=ABS(SS 初 ) Determine the location of the jam and record the information.

3. The method for determining a switching jam failure mode of a switch operating rod according to claim 1, wherein: The I 阈 , n 阈 , t 阈1 , t 阈2 , V 阈 , and C are respectively: the current threshold I for judging the working state of the motor 阈 , when I>I 阈 When the motor is powered on, the switch starts to switch; the speed threshold n for judging the working state of the switch is 阈 , when n>n 阈 When the switch machine starts to switch, the time limit threshold t is used to judge whether the switch machine has completed the switch normally. 阈1 , the maximum time limit t allowed for the switch machine conversion process 阈2 , when the timer stops, t≤t 阈1 When t≥t 阈2 When the switch machine fails to complete the conversion within the maximum time limit, the action rod speed threshold V for judging whether the switch machine is stuck in conversion is 阈 , V 阈 It is pre-set based on experience and data, or calculated based on the detected speed detection value of the motor in the switch machine or the speed detection value n of other parts that is linearly related to its speed; The action rod displacement change value C is a preset constant. Its purpose is to prevent the action rod stuck position record array from being too large. The current action rod stuck position is recorded only after the action rod displacement relative to the previous stuck position is greater than C.

4. The method for determining a switching jam failure mode of a switch operating rod according to claim 1, wherein: The stutter position determination subroutine is executed as follows: Step 1: Read the limit position where the action rod starts to move as the stroke starting point, and the other limit position where the action rod stops moving as the stroke end point. The stroke L of the action rod and the selected constant δ that replaces zero in the complete switching process of the switch machine are used as the motion judgment. Step 2: For all D 2≤j≤k j Check and determine the cause and location of the jam, and classify and count them. After checking all D j Then end the program; If the switch machine is equipped with an external locking turnout, the start of the stroke is when the reading and action rod starts to move from the extreme position, and the end of the stroke is when the external locking is completed and unlocked, and the rail starts to move away from the rail. 解 The position of the operating rod when the locking is started from the outside is the starting point of the stroke, and the end point of the stroke is when the operating rod stops at the limit position. 锁 , When D j When ≤δ, the switch machine has been stuck during the unlocking process; When δ<D j ≤L 解 There was a jam during the process of the switch machine driving the external lock and unlock; When L 解 <D j ≤LL 锁 When the switch machine drives the turnout during the conversion process, a jam occurred; When LL 锁 <D j When ≤L-δ, the switch machine drives the external lock to lock and there is a jam; When L-δ<D j When the switch machine was locked, it was jammed; If the switch machine is equipped with an internal locking turnout, When D j When ≤δ, the switch machine has been stuck during the unlocking process; When δ<D j When ≤L-δ, a jam occurred during the process of the switch machine driving the movable part of the turnout to convert the motion of the action rod; When L-δ<D j When the switch machine was locked, it was jammed; L: Indicates that the limit position where the operating rod starts to move is the starting point of the stroke, and the other limit position where the operating rod stops moving is the end point of the stroke. Assuming that the extending and pulling strokes of the operating rod are equal during a complete switching process of the switch machine, the stroke of the operating rod is L; δ: represents the selected constant used to replace zero. Its value is very small, but should be greater than the jitter value of the detection system to reduce false positives. L 解 : Indicates the distance traveled by the operating rod from the extreme position as the starting point of the stroke to the end point when the external lock is unlocked and the close contact rail begins to move away from it. L 锁 : Indicates the distance the operating rod moves from the external locking position to the locked position as the starting point of the stroke, and the distance the operating rod moves to the limit position and stops as the end point of the stroke.

5. The method for determining a switching jam failure mode of a switch operating rod according to claim 1, wherein: The blocking position determination subroutine is executed as follows: Step 1: Read the limit position where the action rod starts to move as the stroke starting point, and the other limit position where the action rod stops moving as the stroke end point. The stroke L of the action rod and the selected constant δ that replaces zero in the complete switching process of the switch machine are used as the motion judgment. Step 2: Check the ΔS value according to the corresponding method based on whether the switch machine is equipped with an external locking turnout or an internal locking turnout to determine the cause and location of the jam; If the switch machine is equipped with an external locking turnout, the action rod related to the external locking device parameters is read and moves from the limit position as the starting point of the stroke, and until the external lock is unlocked and the close contact with the rail begins to move away from it as the end point of the stroke L 解 And the locking stroke L of the operating rod position when entering the locking state from the external locking 锁 ; When ΔS≤δ, the switch machine is stuck during the unlocking process, and the program ends; Otherwise, when δ<ΔS≤L 解 When the switch machine drives the external lock and unlock process, a jam occurs and the program ends; When L 解 <ΔS≤LL 锁 When the switch machine drives the turnout during the conversion process, a jam occurs and the program ends; When LL 锁 When <ΔS≤L-δ, the switch machine drives the external lock to lock and a jam occurs during the locking process, and the program ends; When L-δ<ΔS, the switch machine is blocked during the internal locking process and the program ends; If the switch machine is equipped with an internal locking turnout, When ΔS≤δ, the switch machine is stuck during the unlocking process, and the program ends; Otherwise, when δ<ΔS≤L-δ, the switch machine drives the movable part of the turnout to perform the action rod movement conversion process, and the program ends; Otherwise, when L-δ<ΔS, the switch machine is stuck during the internal locking process, and the program ends.

6. The method for determining a switching jam failure mode of a switch operating rod according to claim 4, wherein: The stroke parameter L of the action rod is the distance of movement of the action rod during a complete conversion process of the switch machine, where the extreme position of the action rod starting to move is the stroke starting point and the other extreme position of the action rod stopping is the stroke end point; the motion judgment constant δ is a selected constant used to replace zero, and its value is very small, but should be greater than the jitter value of the detection system to reduce misjudgment; the unlocking stroke L 解 The distance the action rod moves from the extreme position as the starting point of the stroke to the end point when the external lock is unlocked and the close contact rail begins to move away from the end point of the stroke. The locking stroke L 锁 The distance the operating rod moves during this process is the distance from the position of the operating rod when the external locking is started to the locking position as the starting point of the stroke to the point where the operating rod stops at the limit position as the end point of the stroke.

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