JP4530204B2 - Opening confirmation device for turning machine and turning machine - Google Patents

Description

  The present invention relates to an opening confirmation device for confirming the opening of a switching machine that switches the destination of a railway track, and a switching machine including the opening confirmation apparatus.

  As shown in FIG. 3, a conventional switching machine 200 includes a motor 201, a switching control relay 202 configured with a magnetic holding relay, and a circuit controller 203. The switch 200 has a function of changing the opening direction of the branching device in accordance with a conversion command instructing the change of position or inversion, and a function of confirming that the branching device has been opened in accordance with the conversion command ( For example, refer nonpatent literature 1.).

  For example, when switching from inversion to localization, a predetermined voltage is applied from the relay chamber 210 to the coil of the control relay 202 through the control cable 204 as a localization conversion command. As a result, the contact point of the switch control relay 202 operates to the localization side, and the motor power source 205 is connected via the contact point so that the motor 201 rotates in a direction in which the switch machine 200 changes from the inverted position to the fixed position. Is supplied to the motor 201, and the turning machine 200 starts the conversion operation.

  When the switch 200 is opened, the contact of the circuit controller 203 connected to the motor 201 is opened, the current to the motor 201 is cut off, and the conversion operation is stopped. The same operation is performed when switching from stereo to inversion.

  The display power source 206 is supplied from the relay chamber 210 to the contact of the control relay 202 and the contact of the circuit controller 203, so that the opening direction can be confirmed. Since the switch control relay 202 is a magnetic holding relay, the contact point is held in the direction indicated by the conversion command input at the start of the conversion operation. That is, when the localization change command is input at the time of starting, the relay contact is held on the localization side, and when the reverse conversion command is input, the contact is held on the reverse side.

  Further, when the switch 200 is open, the contact of the circuit controller 203 operates toward the localization side. When the switch 200 is open, the contact of the circuit controller 203 is reversed. It is designed to work on the position side.

  When the contact point of the switch control relay 202 and the contact point of the circuit controller 203 are operating in the same direction, the display power supply 206 supplied from the relay chamber 210 is connected to the KR of the relay chamber 210 through the contact point and the display cable 207. A signal indicating an opening direction (opening display signal) is input to the relay 211. For example, when the contact of the switch control relay 202 is on the localization side and the contact of the circuit controller 203 is on the localization side, the display power supply 206 is input to the KR relay 211 through these contacts and the display cable 207 as a signal indicating opening of localization. Then, it is displayed and confirmed in the relay chamber 210 that the localization is opened according to the conversion command.

  If the contact between the switch control relay 202 and the circuit controller 203 is operating in a different direction, or if the contact of the circuit controller 203 is not closed during the conversion, the display power supply 206 may be applied even if KR is applied. The opening indication signal is not input to the relay 211, and it is confirmed that the opening is not performed according to the conversion command.

  Note that the signal input to the KR relay 211 distinguishes between localization opening and inversion opening by polarity reversal. Further, the fact that neither the localization nor the reverse is opened is indicated by the absence of the opening display signal input to the KR relay 211.

"Introduction to Electricity Signal Series 4 for Railway Engineers", Japan Railway Electrical Engineering Association, May 10, 1992, p. 47-52

  As described above, in the conventional switch machine control circuit, one of the contact points of the circuit controller 203 operating on the stereo position side or the reverse side is determined whether the switch machine is open or open. It is confirmed only by the condition. For this reason, if the circuit controller 203 breaks down, the completion of the conversion operation cannot be confirmed, and the motor may not be stopped appropriately. In addition, confirmation of the opening direction of the switchboard affects the train operation and safety, so it is desirable to ensure higher reliability.

  The present invention has been made in view of the above-mentioned problems and the like, and an opening confirmation device capable of confirming with high reliability whether or not a turning machine is opened, and a roll provided with the same. The purpose is to provide one machine.

The invention according to claim 1 is a position detecting means for detecting whether the turning machine is in a position opening, a reversing opening or any other position based on the position of the chain mechanism of the turning machine. (14) and
An operation amount detection means (12) for detecting an operation amount after the start of the conversion operation of the conversion operation mechanism of the switch machine;
Based on the operation amount detected by the operation amount detection means (12), the reference operation amount when the conversion operation is normally performed, and the detection state of the position detection means (14), conversion is performed normally. operation possess a judging means (13) determines whether the completion,
If the movement amount detected by the movement amount detection means is within a predetermined range of the reference movement amount at the time when the position detection means detects the position opening or the reverse opening, the conversion operation is normal. If the movement amount detected by the movement amount detection means is outside the predetermined range at the time when the position detection means detects the opening of the localization or the reverse opening, or the localization by the position detection means A switching machine characterized in that when the operation amount detected by the operation amount detecting means before the opening or reverse opening is detected exceeds the reference operation amount by a predetermined amount or more, it is determined as abnormal. The opening confirmation device.

According to the above invention, it is determined whether or not the conversion operation has been normally completed by using both the detection based on the position of the locking mechanism and the detection based on the operation amount of the conversion operation mechanism. The conversion operation mechanism includes an operation mechanism, a conversion roller, and a motor for driving these, and the operation amount is, for example, the number of rotations of the motor, the rotation time of the motor, and the number of rotations of the gears and shafts that rotate with the conversion operation. Etc. are derived based on the above. The locking mechanism includes a locking cane, a driving mechanism for the locking cane, a lock piece, and the like.

If the movement amount detected by the movement amount detection means is within the predetermined range of the reference movement amount at the time when the position opening means detects the opening of the localization or the reverse opening , the determination means (13) is normal in the conversion operation. If the movement amount detected by the movement amount detection means is outside the predetermined range at the time when the position detection means detects that the localization opening or reverse opening is detected by the position detection means, or the position detection means opens or reverses the localization. When the operation amount detected by the operation amount detection means before the opening is detected exceeds the reference operation amount by a predetermined amount or more, it is determined as abnormal .

Invention relating to claim 2, wherein the operation amount detecting means (12), according to claim 1, wherein the Ru rotation sensor der to detect the amount of rotation of the motor for driving the rolling iron machine as the operation amount It is the opening confirmation apparatus of the turning machine as described in.

  According to the above invention, based on the detection based on the position of the locking mechanism, the amount of rotation of the motor after the start of the conversion operation, and the reference amount of rotation when the conversion is normally performed, the switch is opened. It is determined whether it is in the reverse position or any other position. The reference rotation amount is derived from the gear ratio, the moving distance during the conversion operation, and the like. Moreover, when it has a rotation sensor (12) for control of rotational speed, it is good to also use this for detection of rotation amount.

In the invention according to claim 3 , when any of the detection means (12, 14) or the sensor (12, 14) fails, the switch is turned off by the other detection means or sensor that does not fail. The opening confirmation device according to claim 1 or 2 , wherein the opening confirmation device is configured to confirm whether the position is in any position other than the position opening.

  According to the above invention, for example, when one of the position detection means (14) and the operation amount detection means (12) fails, the conversion operation can be continued using the other detection means that does not fail. become.

The invention according to claim 4 is the opening confirmation device according to claim 1, 2 or 3 , characterized by having a self-diagnosis function.

  According to the above invention, it is self-diagnosed whether or not a failure has occurred in the device itself. The diagnosis target can include, for example, all the related components such as the motor (11) in addition to the determination unit (13) and the detection unit (12, 14).

The invention according to claim 5 is a turning machine comprising the opening confirmation device according to claim 1, 2, 3 or 4 .

According to the opening confirmation device and the turning machine equipped with the same according to the present invention, whether or not the conversion operation is normally completed is determined by using a plurality of detection means, so that the opening direction can be confirmed and displayed. The reliability involved is improved.

  In addition, when the motor rotation amount is included in the determination element, the motor usually has a rotation sensor such as a rotary encoder for speed control, and this can also be used to detect the rotation amount. Reliability can be improved without increasing the score.

  If any detection means or sensor fails, use the other detection means or sensor that is not in failure to check whether the switch is in the position open position, the reverse position open position, or any other position. In this case, it is possible to continue the conversion operation using the other detection means or sensor that has not failed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a circuit configuration of a switch 10 including an opening confirmation device according to an embodiment of the present invention. The switch 10 includes a motor 11 that serves as a power source for the conversion operation, a rotation sensor 12 that detects the amount of rotation, a fail-safe CPU (central processing unit) 13, a position sensor 14, and a flash memory 15. I have. The function as the opening confirmation device is realized by a fail-safe CPU 13 that functions as a determination unit, a rotation sensor 12 that functions as an operation amount detection unit, and a position sensor 14 that functions as a position detection unit.

  A motor power source 21 is supplied to the motor 11 from a relay chamber 30 that manages the operation of the switch 10. The fail safe CPU 13 outputs a drive signal 22 for instructing the rotation direction and rotation speed to the motor 11, and a rotation amount detection signal 23 output from the rotation sensor 12 is input to the fail safe CPU 13. The fail safe CPU 13 grasps the rotation speed of the motor 11 based on the rotation amount detection signal 23 and controls the rotation speed.

  Here, an tacho generator is used as the rotation sensor 12. The rotation amount detection signal 23 is a pulse output each time the motor 11 rotates by a predetermined angle. The fail safe CPU 13 is configured to derive the rotation amount of the motor 11 by counting the pulses.

  The position sensor 14 is a sensor that detects whether the switch 10 is in a position opening position, an inversion opening position, or a position in the middle of the switching operation based on the position of the chain mechanism. The position detection signal 24 output from the position sensor 14 is input to the fail safe CPU 13. The position sensor 14 is turned on only when the switch 10 is locked in the position open state, and is turned on only when the switch 10 is locked in the reverse position. It consists of a switch. That is, these switches are turned on and off depending on the physical position of a locking mechanism such as a locking lever or a lock piece.

  The flash memory 15 is a rewritable nonvolatile memory that retains stored contents even when the power is cut off, and is connected to the fail-safe CPU 13.

  Conversion command information 25 is input from the relay chamber 30 to the fail safe CPU 13 through a control cable. The conversion command information 25 represents an instruction for changing the position of the switch 10 or an instruction for changing the position. The display power supply 26 is input from the relay chamber 30 to an opening direction output circuit (not shown). The display power supply 26 is output to the opening direction output circuit when the opening direction of the switch 10 is confirmed in the relay chamber 30. Here, the display power supply 26 is always output from the relay chamber 30 to the opening direction output circuit.

  An opening direction display signal 27 is output from the switch 10 to the KR relay 31 in the relay chamber 30 through a display cable. The opening direction display signal 27 indicates that the display power supply 26 is input and that the switch 10 is opened in the same direction as the direction indicated by the latest conversion command information 25 input from the relay chamber 30. Output to the condition. Note that when the fail safe CPU 13 gives a signal indicating the position opening or the position opening to the opening direction output circuit (not shown), an opening direction display signal 27 in which the polarity is inverted between the position opening and the position opening is displayed. The circuit is output from the opening direction output circuit on condition that the power supply 26 is input.

  In a ROM (Read Only Memory) (not shown) that stores the program of the flash memory 15 or the fail safe CPU 13, a reference rotation amount that is a rotation amount when the conversion operation is normally performed is registered in advance. . Also, an allowable error range for the reference rotation amount is registered in advance. The reference rotation amount is derived by converting the linear operation amount necessary for the conversion operation into the rotation amount of the motor 11 from the gear ratio or the like.

  FIG. 2 shows the flow of operation when the switch 10 receives a conversion command. When conversion command information is input from the relay chamber 30 to the failsafe CPU 13 (step S101; Y), the failsafe CPU 13 flushes the content of the input conversion command information (instruction indicating a change in position or an inversion). Store in the memory 15 (step S102). At this time, an error detection code (CRC code) is added to the conversion command information, and a plurality of the same data is stored at a plurality of different addresses.

  The fail safe CPU 13 refers to the conversion command information stored in the flash memory 15 and gives a rotation command to the motor 11 so that the machine 10 switches in the direction indicated by the conversion command information. The counting of pulses of the rotation amount detection signal 23 is started (step S103). As a result, the conversion operation and the measurement of the rotation amount of the motor 11 after the start of the conversion operation are started.

  Thereafter, monitoring whether or not the position detection signal 24 is input from the position sensor 14 (step S104; N), and monitoring whether or not the rotation amount of the motor 11 exceeds the reference rotation amount by a certain amount (step) S105; N) is repeated. Before the position detection signal 24 is input from the position sensor 14 (step S104; N), when the rotation amount exceeds the reference rotation amount by a certain level (step S105; Y), the motor 11 is stopped (step S106). Then, it is determined that an abnormality has occurred, and the fact is notified to the relay room 30 (step S109). Further, the occurrence of an abnormality in the detection of opening is registered in the flash memory 15 (step S110), and the process is terminated (END).

  If the position detection signal 24 is input from the position sensor 14 before the rotation amount of the motor 11 exceeds the reference rotation amount by a certain amount (step S104; Y), the motor 11 is stopped (step S107), and the conversion operation is performed. It is checked whether or not the rotation amount at is within an allowable error range with respect to the reference rotation amount (step S108). When it is not within the allowable error range (step S108; N), it is determined that an abnormality has occurred, and the fact is notified to the relay room 30 (step S109). Further, the occurrence of an abnormality in the detection of opening is registered in the flash memory 15 (step S110), and the process is terminated (END).

  When the rotation amount in the conversion operation is within an allowable error range with respect to the reference rotation amount (step S108; Y), the measured rotation amount, the reference rotation amount, and the detection state of the position sensor 14 are matched. Then, it is determined that the switch 10 has been normally converted and opened (step S111), the fact that the normal opening has been confirmed is output, and the processing is ended (END).

  Thus, since the normal opening of the switch 10 is confirmed based on the two conditions of the rotation amount counted by the rotation sensor 12 and the detection state of the position sensor 14, the reliability of the opening confirmation is increased. Further, even when the position sensor 14 is out of order, the motor 11 can be stopped from the rotation amount counted by the rotation sensor 12, and damage to the motor 11 and the turning machine 10 can be avoided.

  The position sensor 14 continues to output a position detection signal 24 indicating the opening direction while the switch 10 is in the position opening or the position opening.

  The fail-safe CPU 13 refers to the conversion command information stored in the flash memory 15 and controls the motor 11 of the switch 10 so that the conversion command information 25 is not input from the relay chamber 30 during the conversion operation. However, the conversion operation is continued based on the stored contents of the flash memory 15. Further, even when a power failure occurs during the conversion operation, the conversion operation can be completed after the power recovery based on the content of the conversion command information stored in the flash memory 15.

  In this way, when the conversion operation is continued after the power recovery, the rotation amount after the start of the conversion operation may be sequentially written in the flash memory 15. That is, when the power is restored, the rotation amount registered in the flash memory 15 (the rotation amount before the power failure before the power failure) is used as an initial value, and the rotation amount measurement may be continued.

Next, the display operation in the opening direction will be described.
The fail safe CPU 13 continuously executes the following operations. It is checked whether or not the position detection signal 24 is input from the position sensor 14. When the position detection signal 24 is input, the opening direction is compared with the direction indicated by the conversion command information stored in the flash memory 15. When these coincide with each other, the fail safe CPU 13 outputs an opening direction display signal 27 indicating the opening direction toward the KR relay 31 of the relay chamber 30.

  When the occurrence of an abnormality is registered in the flash memory 15, the opening direction is not displayed.

  In addition, since the conversion command information input from the relay chamber 30 at the time of start-up is stored in the nonvolatile flash memory 15, even if a power failure occurs thereafter, the power is directed to the KR relay 31 after the power recovery in the same manner as before the power failure. The opening direction can be displayed.

  When reading the conversion command information from the flash memory 15, the fail safe CPU 13 reads a plurality of conversion command information stored in a plurality of addresses and an error detection code corresponding to each. Then, it is confirmed by the error detection code that there is no error in the conversion command information. Further, only when the plurality of conversion command information are all the same, it is determined that the storage contents of the flash memory 15 are normal, and the conversion operation and the display operation in the opening direction are continuously executed. If an error is detected by the error detection code or if any one of the plurality of conversion command information does not match, it is determined that an abnormality has occurred and the opening direction is not displayed. In addition, it is good to comprise so that generation | occurrence | production of abnormality may be notified to the relay chamber 30. FIG.

  The embodiment of the present invention has been described with reference to the drawings. However, the specific configuration is not limited to that shown in the embodiment, and there are changes and additions within the scope of the present invention. Are also included in the present invention.

  For example, the control circuit of the switch 10 uses a fail-safe CPU 13 or flash memory 15 as an example. However, as shown in FIG. 3, the conventional circuit controller checks the rotation amount of the motor 11. It is also possible to add a circuit to be added.

  In the embodiment, the opening is confirmed by using the position sensor 14 and the rotation sensor 12 together, but the detecting means for confirming the opening is not limited to these. Moreover, you may determine the normality of opening by combining 3 or more detection methods and detection means.

  In addition, when any of the detection means and sensors used together, such as the position sensor 14 and the rotation sensor 12, fails, only the other non-failed detection means or sensors are used and You may comprise so that it may be confirmed whether it is in position opening and positions other than these. This makes it possible to continue the conversion operation even if some of the detection means and sensors fail.

  Moreover, it is good to provide the function which carries out the self-diagnosis of the machine by fail-safe CPU13. In addition to the fail-safe CPU 13 itself, the self-diagnosis targets may include all related components such as the rotation sensor 12, the position sensor 14, and the motor 11.

It is a block diagram which shows the structure of the switching machine concerning embodiment of this invention. It is a flowchart which shows operation | movement when the switch machine concerning embodiment of this invention receives the conversion command. It is a block diagram which shows the structure of the switch machine conventionally used.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Turning machine 11 ... Motor 12 ... Rotation sensor 13 ... Fail safe CPU
DESCRIPTION OF SYMBOLS 14 ... Position sensor 15 ... Flash memory 21 ... Motor power supply 22 ... Drive signal 23 ... Rotation amount detection signal 24 ... Position detection signal 25 ... Conversion command information 26 ... Display power supply 27 ... Opening direction display signal 30 ... Relay room 31 ... KR relay

Claims (5)

Position detecting means for detecting whether the turning machine is in a position opening position or a reversing opening position or other positions based on the position of the chain mechanism of the turning machine;
An operation amount detection means for detecting an operation amount after the start of the conversion operation of the conversion operation mechanism of the turning machine;
Whether or not the conversion operation has been normally completed based on the operation amount detected by the operation amount detection means, the reference operation amount when the conversion operation is normally performed, and the detection state of the position detection means. or have a judging means for judging,
If the movement amount detected by the movement amount detection means is within a predetermined range of the reference movement amount at the time when the position detection means detects the position opening or the reverse opening, the conversion operation is normal. If the movement amount detected by the movement amount detection means is outside the predetermined range at the time when the position detection means detects the opening of the localization or the reverse opening, or the localization by the position detection means A switching machine characterized in that when the operation amount detected by the operation amount detecting means before the opening or reverse opening is detected exceeds the reference operation amount by a predetermined amount or more, it is determined as abnormal. Opening confirmation device. The operation amount detecting means, opening check device of the rolling iron machine according to rotation of the motor for driving the rolling iron machine according to claim 1, wherein the Ru rotation sensor der detected as the operation amount . When any detection means or sensor fails, the non-failed detection means or sensor checks whether the switch is in the position open position, the reverse position open position, or any other position. The opening confirmation apparatus according to claim 1 or 2 . It has a self-diagnosis function. The opening confirmation apparatus of Claim 1, 2, or 3 characterized by the above-mentioned. A turning machine comprising the opening confirmation device according to claim 1, 2, 3 or 4 .

Images