JP2009061981A - Railway crossing gate - Google Patents

Railway crossing gate Download PDF

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JP2009061981A
JP2009061981A JP2007233059A JP2007233059A JP2009061981A JP 2009061981 A JP2009061981 A JP 2009061981A JP 2007233059 A JP2007233059 A JP 2007233059A JP 2007233059 A JP2007233059 A JP 2007233059A JP 2009061981 A JP2009061981 A JP 2009061981A
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control
temperature
motor
driving
cutoff
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JP5007390B2 (en
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Yoshito Takeshima
義人 竹島
Hiroshi Narita
博 成田
Naoto Uemura
直人 植村
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Kyosan Electric Manufacturing Co Ltd
Tamagawa Seiki Co Ltd
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Kyosan Electric Manufacturing Co Ltd
Tamagawa Seiki Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a railway crossing gate capable of effectively preventing breakage of the gate when there is an interference. <P>SOLUTION: A barrier pipe operation control block 1 of a railway crossing gate controls the operation when any abnormality occurs in the elevating/lowering operation of the railway crossing gate. and comprises a motor driver driving circuit 4 for driving a motor 2 for driving the barrier pipe via a motor driver 3, a dynamic brake function for interrupting the motor drive, a temperature detection means 6 for detecting the temperature related to the drive of the barrier pipe, and a control circuit 7. The control circuit 7 performs the different operational control when the barrier pipe is lowered or elevated, and also performs the different operational control according to the detected temperature. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は踏切しゃ断機において、障害や妨害を受けた際などの装置の破損を有効に防止することのできる、踏切しゃ断機に関する。   The present invention relates to a railroad crossing breaker that can effectively prevent damage to a device such as when a failure or disturbance occurs in the railroad crossing barrier.

踏切しゃ断機では、しゃ断かんが降下動作している際に無理な踏切横断を試みた自動車等がしゃ断かんによって上から挟み込まれる状況や、しゃ断かんが上昇動作している際に手などによって無理に下方に抑えて動作を妨害しようとする等のトラブルが発生する場合がある。かかる場合の対処として従来から、しゃ断機にクラッチを設け、これを作動させることによってモータ焼損の防止、およびしゃ断かんに挟まれた自動車等の損傷防止が図られている。   In a level crossing cutting machine, it is impossible to force a car, etc., that has attempted to cross the railroad crossing forcibly when it is descending from the top, or by hand when the cutting bar is moving up. Troubles such as trying to hold down and hinder the operation may occur. In order to cope with such a case, conventionally, a breaker is provided with a clutch and operated to prevent motor burnout and prevent damage to an automobile or the like sandwiched between the breakers.

かかる状況下、高価なクラッチを不要とし、かつ小型・薄形で、電流制御によりトルクリミット特性を付与したブラシレスモータを内蔵させた踏切しゃ断機の提案もなされている(特許文献1)。この技術は、クラッチ不要を実現するために、しゃ断かんの昇降速度低下の検出、またはモータ過熱の検出に基づいてモータ駆動を断続制御するというものである。   Under such circumstances, there has also been proposed a railroad crossing breaker that incorporates a brushless motor that does not require an expensive clutch, is small and thin, and has a torque limit characteristic provided by current control (Patent Document 1). In this technique, the motor drive is intermittently controlled on the basis of detection of a decrease in the lifting speed of the cutoff or detection of motor overheating in order to realize the need for a clutch.

特開2002−320396号公報「踏切遮断機」Japanese Patent Application Laid-Open No. 2002-320396 “Level Crossing Barrier”

しかし、上記従来技術では、モータ過熱検出後30分間もの長い時間装置を停止させるものであり、停止時間があまりに長すぎる。また、しゃ断かんの昇降動作に障害や妨害によって異常が生じた場合であっても、負荷の大きさや力の方向、負荷の解消等、その障害等の状況は刻一刻と変化し得るものであるため、上記技術のように停止時間が固定され、制御パターンが単純では、異常対応には限界がある。   However, in the above prior art, the apparatus is stopped for a long time of 30 minutes after the detection of the motor overheat, and the stop time is too long. In addition, even if the lifting / lowering operation of the circuit breaker is abnormal due to a failure or obstruction, the state of the failure, such as the magnitude of the load, the direction of the force, the elimination of the load, etc., can change from moment to moment. Therefore, when the stop time is fixed as in the above technique and the control pattern is simple, there is a limit to the abnormality response.

本発明が解決しようとする課題は、かかる従来技術の問題点を除き、踏切等のしゃ断機において、障害や妨害を受けた際などの装置の破損を有効に防止することのできる、踏切しゃ断機を提供することである。特に、従来技術におけるような装置停止時間の長さを改善し、しゃ断かんの昇降動作異常に対してより高度に対応可能な、踏切しゃ断機を提供することである。   The problem to be solved by the present invention is that, except for the problems of the prior art, a level crossing cutting machine capable of effectively preventing damage to the apparatus such as when a failure or disturbance occurs in a level crossing cutting machine. Is to provide. In particular, it is an object of the present invention to provide a railroad crossing breaker that improves the length of the apparatus stop time as in the prior art and can cope with a higher degree of abnormal lifting / lowering operation of the breaker.

本願発明者は上記課題について検討した結果、異常発生時におけるしゃ断かんの動作に対する制御パターンを工夫することにより上記課題が解決可能であることを見出し、本発明に至った。すなわち、上記課題を解決するための手段として本願で特許請求される発明、もしくは少なくとも開示される発明は、以下の通りである。   As a result of studying the above problems, the present inventor has found that the above problems can be solved by devising a control pattern for the operation of blocking when an abnormality occurs, and has reached the present invention. That is, the invention claimed in the present application, or at least the disclosed invention, as means for solving the above-described problems is as follows.

(1) しゃ断かんをモータの回転によって昇降させる踏切しゃ断機において、しゃ断かん駆動用のモータをモータドライバを介して駆動するモータドライバ駆動回路と、モータ駆動を中断するダイナミックブレーキ機能と、該しゃ断かん駆動に係る温度検知を行う温度検知手段とを備え、さらに、該しゃ断かん下降時において異常が発生した際には正常時の下降時間を所定時間経過した時点で該しゃ断かんのモータ駆動制御をダイナミックブレーキに切り替え、一方該しゃ断かん上昇時において異常が発生した際には該しゃ断かん駆動に係る温度検知に基づき、所定温度以下の場合には定格電流を超えたモータ駆動制御を行う第1パターン制御と、該所定温度を超えた場合には定格電流を超えた駆動とダイナミックブレーキによる駆動中断とを該所定温度以下になるまで交互に繰り返す第2パターン制御を行う制御回路を備えることを特徴とする、踏切しゃ断機。
(2) 前記制御回路の行う第1パターン制御は、より高電流による制御とより低電流による制御とを交互に繰り返すものであることを特徴とする、(1)に記載の踏切しゃ断機。
(3) 前記温度検知手段は、前記モータ駆動制御に係るモータドライバ駆動回路の温度を検知することを特徴とする、(1)に記載の踏切しゃ断機。
(4) 前記制御回路の行う第1パターン制御および第2パターン制御は、所定の異常判定時間を設定しておき、該異常判定時間を経過した場合にはダイナミックブレーキによる駆動中断に切り替えるものであることを特徴とする、(1)ないし(3)に記載の踏切しゃ断機。
(1) In a crossing cutting machine that lifts and lowers a cutting wheel by rotating a motor, a motor driver driving circuit that drives a motor for driving the cutting wheel through a motor driver, a dynamic brake function that interrupts motor driving, and the cutting wheel Temperature detecting means for detecting the temperature related to driving, and further, when an abnormality occurs at the time of lowering the shut-off, the motor drive control of the shut-off can be dynamically performed when a predetermined time elapses. First pattern control that switches to the brake and performs motor drive control that exceeds the rated current when the temperature is lower than a predetermined temperature based on temperature detection related to the cutoff drive when an abnormality occurs when the cutoff is raised When the temperature exceeds the predetermined temperature, driving exceeding the rated current and driving interruption due to dynamic braking A railroad crossing breaker comprising a control circuit that performs second pattern control that alternately repeats until the temperature falls below the predetermined temperature.
(2) The railroad crossing barrier according to (1), wherein the first pattern control performed by the control circuit alternately repeats control with a higher current and control with a lower current.
(3) The railroad crossing breaker according to (1), wherein the temperature detection means detects a temperature of a motor driver drive circuit related to the motor drive control.
(4) In the first pattern control and the second pattern control performed by the control circuit, a predetermined abnormality determination time is set, and when the abnormality determination time has elapsed, switching to driving interruption by a dynamic brake is performed. The railroad crossing breaker according to any one of (1) to (3).

(5) しゃ断機のしゃ断かん昇降いずれかの動作に異常が発生した場合の動作制御方法であって、該しゃ断かん下降時において異常が発生した際に、正常時の下降時間を所定時間経過した時点で該しゃ断かんのモータ駆動制御をダイナミックブレーキに切り替えることを特徴とする、異常時のしゃ断かん動作制御方法。
(6) しゃ断機のしゃ断かん昇降いずれかの動作に異常が発生した場合の動作制御方法であって、該しゃ断かん上昇時において異常が発生した際に、該しゃ断かん駆動に係る温度検知に基づき、所定温度以下の場合には定格電流を超えたモータ駆動制御を行う第1パターン制御と、該所定温度を超えた場合には定格電流を超えた駆動とダイナミックブレーキによる駆動中断とを該所定温度以下になるまで交互に繰り返す第2パターン制御を行うことを特徴とする、異常時のしゃ断かん動作制御方法。
(7) 前記第1パターン制御は、より高電流による制御とより低電流による制御とを交互に繰り返すものであることを特徴とする、(6)に記載の異常時のしゃ断かん動作制御方法。
(8) 前記温度検知は、前記モータ駆動制御に係るモータドライバ駆動回路の温度を検知するものであることを特徴とする、(6)に記載の異常時のしゃ断かん動作制御方法。
(9) 所定の異常判定時間を設定しておき、該異常判定時間を経過した場合にはダイナミックブレーキによる駆動中断に切り替えることを特徴とする、(6)ないし(8)のいずれかに記載の異常時のしゃ断かん動作制御方法。
(10) しゃ断機のしゃ断かん昇降いずれかの動作に異常が発生した場合の動作制御方法であって、該しゃ断かん下降時において異常が発生した際には、正常時の下降時間を所定時間経過した時点で該しゃ断かんのモータ駆動制御をダイナミックブレーキに切り替え、一方該しゃ断かん上昇時において異常が発生した際には、該しゃ断かん駆動に係る温度検知に基づき、所定温度以下の場合には定格電流を超えたモータ駆動制御を行う第1パターン制御と、該所定温度を超えた場合には定格電流を超えた駆動とダイナミックブレーキによる駆動中断とを該所定温度以下になるまで交互に繰り返す第2パターン制御を行うことを特徴とする、異常時のしゃ断かん動作制御方法。
(5) An operation control method in the case where an abnormality occurs in the operation of either the cutting or lifting operation of the circuit breaker, and when an abnormality occurs during the lowering of the cutting machine, the normal descent time has elapsed. A method for controlling the cutting operation at the time of abnormality, wherein the motor driving control of the cutting is switched to a dynamic brake at the time.
(6) An operation control method in the case where an abnormality occurs in any of the operations of the cutting and lifting of the circuit breaker, and when an abnormality occurs during the lifting operation, based on the temperature detection related to the circuit driving. The first pattern control for performing motor drive control exceeding the rated current when the temperature is lower than the predetermined temperature, the driving exceeding the rated current when the predetermined temperature is exceeded, and the driving interruption by the dynamic brake are the predetermined temperature. A second pattern control that is alternately repeated until the following occurs:
(7) The first-pattern control is a method for controlling the cutoff operation at the time of abnormality according to (6), characterized in that control by a higher current and control by a lower current are alternately repeated.
(8) The method according to (6), wherein the temperature detection is to detect a temperature of a motor driver drive circuit related to the motor drive control.
(9) A predetermined abnormality determination time is set, and when the abnormality determination time elapses, the driving is interrupted by a dynamic brake. (6) to (8), A method for controlling the cutting operation when there is an abnormality.
(10) An operation control method in the case where an abnormality occurs in any one of the operations of cutting and lifting of the circuit breaker, and when an abnormality occurs when the circuit is lowered, a normal time of descent time has elapsed. At this point, the motor drive control of the shut-off switch is switched to a dynamic brake. On the other hand, if an abnormality occurs when the shut-off lift is raised, the rating is A second pattern control that performs motor drive control exceeding the current, and a drive that exceeds the rated current when the predetermined temperature is exceeded and a drive interruption by the dynamic brake are alternately repeated until the temperature falls below the predetermined temperature. A method for controlling the cutting operation at the time of abnormality characterized by performing pattern control.

つまり本発明は、しゃ断かん動作に対する制御を、その上昇時、下降時により区別して行うこととし、さらに状況に応じた複数の制御パターン(以下、「動作パターン」ともいう。)を準備しておいて、駆動モータが過熱しないようその前に制御パターンを切り替える、という原理を基礎とするものである。   That is, according to the present invention, the control for the cutting operation is performed by distinguishing when it is raised and when it is lowered, and a plurality of control patterns (hereinafter also referred to as “operation patterns”) corresponding to the situation are prepared. Therefore, it is based on the principle that the control pattern is switched before the drive motor is overheated.

また、しゃ断かんの昇降動作異常による停止時間も固定とはせず、温度によって動作パターンを切り替え、それにより停止時間の短縮を図るものである。   In addition, the stop time due to the abnormal lifting / lowering operation of the circuit breaker is not fixed, but the operation pattern is switched depending on the temperature, thereby shortening the stop time.

本発明は上述のように構成されるため、これによれば、踏切しゃ断機において障害や妨害によりしゃ断かんの昇降動作に異常が発生した場合に、装置の破損を有効に防止することができる。また、従来技術におけるような装置停止時間の長さを改善して短縮することができ、しゃ断かんの昇降動作異常に対して、装置保守上、より適切な制御を行うことができる。   Since this invention is comprised as mentioned above, according to this, when abnormality arises in the raising / lowering operation | movement of a cutoff machine by a fault and obstruction in a level crossing cutoff machine, damage to an apparatus can be prevented effectively. Further, the length of the apparatus stop time as in the prior art can be improved and shortened, and more appropriate control can be performed for apparatus maintenance with respect to the abnormal lifting / lowering operation of the shield.

以下、本発明を図面により詳細に説明する。
図1は、本発明の踏切しゃ断機のしゃ断かん動作制御ブロックの基本構成を示すブロック図である。図示するようにしゃ断かん動作制御ブロック1に係る回路は、しゃ断機のしゃ断かん昇降いずれかの動作に異常が発生した場合の動作を制御するものであって、しゃ断かん駆動用のモータ2をモータドライバ3を介して駆動するモータドライバ駆動回路4と、モータ駆動を中断するダイナミックブレーキ機能5と、しゃ断かん駆動に係る温度検知を行う温度検知手段6とを備える。
Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram showing a basic configuration of a cutting operation control block of a railroad crossing breaker according to the present invention. As shown in the figure, the circuit relating to the cutting operation control block 1 controls the operation in the case where an abnormality occurs in either the cutting or lifting operation of the cutting machine. A motor driver drive circuit 4 that is driven via the driver 3, a dynamic brake function 5 that interrupts the motor drive, and a temperature detection means 6 that performs temperature detection related to the cutoff driving are provided.

さらにしゃ断かん動作制御ブロック1は制御回路7を備える。制御回路7は、しゃ断かん下降時において異常が発生した際には、正常時の下降時間を所定時間経過した時点でしゃ断かんのモータ駆動制御をダイナミックブレーキに切り替える制御をする。一方また制御回路7は、しゃ断かん上昇時において異常が発生した際には、しゃ断かん駆動に係る温度検知に基づき、所定温度以下の場合には定格電流を超えたモータ駆動制御を行う第1パターン制御と、所定温度を超えた場合には定格電流を超えた駆動とダイナミックブレーキによる駆動中断とを所定温度以下になるまで交互に繰り返す第2パターン制御を行う。   Further, the cutoff operation control block 1 includes a control circuit 7. The control circuit 7 performs control to switch the motor drive control of the cutoff to the dynamic brake when a predetermined time elapses during the normal fall time when an abnormality occurs during the cutoff drop. On the other hand, the control circuit 7 is configured to perform a motor drive control that exceeds the rated current when the temperature is lower than a predetermined temperature based on the temperature detection related to the cutoff driving when an abnormality occurs when the cutoff is raised. When the temperature exceeds the predetermined temperature, the second pattern control is alternately repeated until the driving exceeds the rated current and the driving interruption by the dynamic brake is reduced to the predetermined temperature or lower.

図2は、本発明に係るしゃ断かん動作制御方法の構成を示すフロー図である。上記しゃ断かん動作制御ブロックを用いる場合に即して、本発明方法を説明する。図示するように本方法は、上記しゃ断かん動作制御ブロック(図1の1)において、制御回路7の機能によって以下述べる手順が実行されるものである。まず、しゃ断機のしゃ断かん昇降いずれかの動作に異常が発生したか否かの判断(P1)がなされて、しゃ断かん下降時における異常発生が認められた場合は、正常時の下降時間を所定時間経過したか否かの判断(P2)を経、経過したと判断されるとその時点でしゃ断かんのモータ駆動制御をダイナミックブレーキ(図1の5)に切り替える制御がなされる。   FIG. 2 is a flowchart showing the configuration of the cutoff operation control method according to the present invention. The method of the present invention will be described in the case of using the cutting operation control block. As shown in the figure, in the present method, the procedure described below is executed by the function of the control circuit 7 in the above-described cutoff operation control block (1 in FIG. 1). First, a determination is made as to whether or not an abnormality has occurred in either the lifting or lowering operation of the breaker (P1), and if an abnormality is detected when the breaker is lowered, a normal descent time is determined. After determining whether or not the time has passed (P2), when it is determined that the time has passed, control for switching the motor driving control of the cutoff to dynamic brake (5 in FIG. 1) is performed.

また、異常が発生したか否かの判断(P1)において、しゃ断かん上昇時における異常発生が認められた場合は、図1の温度検知手段6によるしゃ断かん駆動に係る温度検知に基づき、検知された温度と予め設定された所定の設定温度との比較により検知された温度が設定温度以下か否かの判断(P3)がなされて、検知温度が設定温度以下である場合は、定格電流を超えたモータ駆動制御が行われる(第1パターン制御)。   In addition, in the determination (P1) of whether or not an abnormality has occurred, if an abnormality occurs when the cutoff is raised, it is detected based on the temperature detection related to the cutoff drive by the temperature detection means 6 in FIG. It is determined whether the detected temperature is equal to or lower than the preset temperature by comparing the detected temperature with a preset preset temperature (P3). If the detected temperature is equal to or lower than the preset temperature, the rated current is exceeded. Motor drive control is performed (first pattern control).

一方、検知手段により検知された温度が設定温度以下か否かの判断(P3)において、検知温度が設定温度を超える場合は、定格電流を超えた駆動とダイナミックブレーキによる駆動中断とを設定温度以下になるまで交互に繰り返す制御が行われる(第2パターン制御)。   On the other hand, in the determination (P3) of whether or not the temperature detected by the detection means is lower than the set temperature, if the detected temperature exceeds the set temperature, the drive exceeding the rated current and the drive interruption due to the dynamic brake are less than the set temperature. Control is repeated alternately until the second pattern control is reached (second pattern control).

上記第1パターン制御によるモータ駆動では、電流量を違えて、より高電流による制御と、より低電流による制御とを交互に繰り返すものとすることができる。つまり、電流量が低い制御の時間を設けることによってその時間帯におけるモータのトルクを低下させ、それによりモータの発熱を抑制するものである。また、第1パターン制御続行中においても、検知手段により検知された温度が設定温度を超えるか否かの監視は継続されており、その判断(P3−2)において、検知温度が設定温度を超えた場合には、制御は第2パターン制御へと移行、切り替えられる。   In the motor driving by the first pattern control, the current amount is different, and the control with a higher current and the control with a lower current can be alternately repeated. That is, by providing a control time with a low amount of current, the torque of the motor in that time zone is reduced, thereby suppressing the heat generation of the motor. Further, even while the first pattern control is continuing, monitoring of whether or not the temperature detected by the detection means exceeds the set temperature is continued, and in the determination (P3-2), the detected temperature exceeds the set temperature. In the case where it is detected, the control shifts to the second pattern control and is switched.

また、上記第2パターン制御中における温度検知は継続的になされているが、ここで、検知温度が設定温度以下になったか否かの判断(P4)がなされて設定温度以下と判断されれば、制御は、第1パターンへと移行する。   In addition, the temperature detection during the second pattern control is continuously performed. If it is determined that the detected temperature is lower than the set temperature (P4), it is determined that the detected temperature is lower than the set temperature. The control moves to the first pattern.

また、しゃ断かん上昇時の異常に係る上記第1パターン制御および第2パターン制御は、所定の異常判定時間を予め設定しておき、各パターン制御中においても異常判定時間を経過した場合(P5、P6)には、ダイナミックブレーキによる駆動中断に切り替えるものとすることができる。つまり、本発明に係るしゃ断かん動作制御ブロック、しゃ断かん動作制御方法は、しゃ断かん昇降動作の異常に対する応急対処手段であるが、応急対処実施時間を制限し、所定時間を過ぎた場合には、応急的には治癒できぬ異常として判断するものである。   Further, in the first pattern control and the second pattern control related to the abnormality at the time of raising the cutoff, a predetermined abnormality determination time is set in advance, and the abnormality determination time has elapsed even during each pattern control (P5, In P6), the driving can be interrupted by the dynamic brake. In other words, the cutoff operation control block, the cutoff operation control method according to the present invention is an emergency response means for an abnormality in the cutoff operation, but when the emergency response execution time is limited and a predetermined time has passed, As an emergency, it is judged as an abnormality that cannot be cured.

ところで、図1に示した本発明に係るしゃ断かん動作制御ブロック、または本方法における温度検知手段6は、直接モータ2やモータドライバ3の温度を検知するのではなく、モータドライバ駆動回路4の温度を検知するものとすることができる。制御系のより上流側において温度変化を検知することにより、モータ発熱を未然に、あるいは温度上昇の早い段階で、モータ2の状態に合わせた適切な動作制御パターンを判断することができ、モータ2の焼損を有効に防止することができる。   By the way, the cutoff operation control block according to the present invention shown in FIG. 1 or the temperature detection means 6 in this method does not directly detect the temperature of the motor 2 or the motor driver 3 but the temperature of the motor driver drive circuit 4. Can be detected. By detecting the temperature change on the upstream side of the control system, it is possible to determine an appropriate operation control pattern according to the state of the motor 2 before the motor heat is generated or at an early stage of the temperature rise. Can be effectively prevented.

以下、本発明を実施例により説明する。ここで、動作制御に係る具体的な時間や温度は、実際の踏切しゃ断機に適する一例であるが、これらの数値を初めとして、本発明が実施例に限定されるものではない。
図3は、本発明に係るしゃ断かん動作制御方法におけるしゃ断かん下降時異常の際の動作制御パターンを示すグラフである。また同じく、
図4は、しゃ断かん上昇時異常の際の動作制御パターンのうち第1パターン、
図5は第2パターンをそれぞれ示すグラフである。各グラフとも、横軸が経過時間、縦軸が電流量である。
Hereinafter, the present invention will be described with reference to examples. Here, the specific time and temperature related to the operation control are examples suitable for an actual railroad crossing breaker, but the present invention is not limited to the embodiments, starting with these numerical values.
FIG. 3 is a graph showing an operation control pattern in the case of an abnormality at the time of lowering of the cutoff operation in the cutoff operation control method according to the present invention. Also,
FIG. 4 shows the first pattern among the operation control patterns in the case of an abnormality at the time of cutting and lifting.
FIG. 5 is a graph showing each second pattern. In each graph, the horizontal axis represents the elapsed time, and the vertical axis represents the amount of current.

まず本実施例の踏切しゃ断機しゃ断かん動作制御方法においては、正常動作時は、しゃ断かんは上昇開始から約4.5秒後に目標位置に到達して電源オフされ、一方、下降開始から約5.5秒後に電源オフされる設定とする。なお、しゃ断かん下降動作時間の具体例としては、約6.5秒あるいは7.5秒などもある。   First of all, in the railroad crossing-blocking machine cutting-off control method of this embodiment, during normal operation, the cutting-off reaches the target position after about 4.5 seconds from the start of ascent and is turned off. Suppose that the power is turned off after 5 seconds. In addition, as a specific example of the cutting and lowering operation time, there are approximately 6.5 seconds or 7.5 seconds.

しゃ断かん下降時に、たとえば自動車が無理に踏切横断を試みてしゃ断かんに上から挟まれるなどして正常な下降動作が妨害されるような異常が発生した場合は、図3に示すような動作制御がなされる。すなわち、正常であれば下降動作開始後5.5秒で所定の目標位置までしゃ断かんが下降して電源オフされるべきところ、10秒経過後も電源オフされない場合は「異常」と判定し、しゃ断かんは、モータによる駆動からダイナミックブレーキによる制御に切り替えられる制御である。   When an abnormality occurs in which the normal lowering operation is obstructed, for example, when the car is forced to cross the railroad crossing when it is lowered, and the normal lowering operation is obstructed. Is made. That is, if it is normal, the cutoff should be lowered to the predetermined target position in 5.5 seconds after the descent operation starts and the power should be turned off. If the power is not turned off after 10 seconds, it is determined as “abnormal”. The cutoff operation is a control that can be switched from driving by a motor to control by a dynamic brake.

ダイナミックブレーキにより、しゃ断かんは自重によって下降するため、モータの発熱は発生しない。また、下降動作はしゃ断かんを所定の目標位置まで下降させることが目的であるから、かかる異常の際にまでモータ駆動してこれを下降させることは不要であり、自重下降で充分に目的は達せられる。   Due to the dynamic brake, the shut-off is lowered by its own weight, so the motor does not generate heat. In addition, since the purpose of the lowering operation is to lower the cutoff to a predetermined target position, it is not necessary to drive the motor to lower it in the event of such an abnormality. It is done.

しゃ断かん上昇時に、たとえば人がしゃ断かんを無理に下方に押し下げるなどして正常な上昇動作が妨害されるような異常が発生した場合は、装置の状況に応じて図4、5に示すような異なるパターンの動作制御がなされる。すなわち図4に示すように、正常であれば、定格電流の2倍程度の電流量による駆動によって、上昇動作開始後4.5秒で所定の目標位置までしゃ断かんが上昇して電源オフされるべきところ、これ過ぎてもオフされない場合でも、10秒後までは、動作開始時と変わらず定格電流の2倍程度の電流量による駆動が継続される。   When an abnormality occurs that prevents the normal ascending operation from being interrupted, for example, when a person forcibly pushes down the shielding, such as shown in FIGS. 4 and 5, depending on the situation of the device. Operation control of different patterns is performed. That is, as shown in FIG. 4, if it is normal, the drive with the current amount of about twice the rated current raises the cutoff to a predetermined target position in 4.5 seconds after the start of the ascending operation, and the power is turned off. However, even if it is not turned off even after this, the driving with the amount of current about twice the rated current is continued until 10 seconds after the start of the operation.

しかし10秒後の時点でもオフされない場合は、ここで定格電流の1.5倍程度にトルクが落とされる制御がなされる。このようにトルクを落とすことによって、継続駆動によるモータの発熱が抑制される。これが、上昇動作異常時における第1パターン制御であり、図に検知温度「50℃以下」と例示されるように、モータが、対処すべき高温にまだ達していない状態での制御である。   However, if it is not turned off even after 10 seconds, control is performed so that the torque is reduced to about 1.5 times the rated current. By reducing the torque in this way, the heat generation of the motor due to the continuous drive is suppressed. This is the first pattern control when the ascending operation is abnormal, and is control in a state where the motor has not yet reached the high temperature to be dealt with, as exemplified by the detected temperature “50 ° C. or lower” in the figure.

しかし、モータ駆動回路の検知温度が50℃を超えた場合は、図5に示すパターンに切り替えられる。すなわち、定格電流の1.5倍程度の電流量による駆動を8秒、ダイナミックブレーキを12秒、というパターンを繰り返す制御である。これが、上昇動作異常時における第2パターン制御である。第2パターン制御による動作中に、検知温度が50℃以下となったら、第1パターン制御に切り替えられる。   However, when the detected temperature of the motor drive circuit exceeds 50 ° C., the pattern is switched to the pattern shown in FIG. In other words, this is a control that repeats the pattern of driving with an amount of current about 1.5 times the rated current for 8 seconds and dynamic brake for 12 seconds. This is the second pattern control when the ascending operation is abnormal. If the detected temperature becomes 50 ° C. or lower during the operation by the second pattern control, the first pattern control is switched.

このようにして、モータ駆動回路の検知温度に基づいて第1、第2パターン制御を切り替えながら異常に対処する動作を繰り返す制御が行われ、それによって最終的にしゃ断かんが所定の目標位置まで到達して電源オフされれば、制御は完了する。しかし、動作が開始して所定時間、たとえばしゃ断かん上昇動作開始から10分が経過しても電源オフされない場合は、異常時対処の制御は中止され、ダイナミックブレーキに切り替えられる。   In this way, the control for repeating the operation to cope with the abnormality while switching the first and second pattern control based on the detected temperature of the motor drive circuit is performed, so that the cutoff finally reaches the predetermined target position. If the power is turned off, the control is completed. However, if the power is not turned off even after a lapse of a predetermined time from the start of the operation, for example, 10 minutes from the start of the lifting operation, the control for dealing with the abnormality is stopped and switched to the dynamic brake.

以上例示したような動作制御により、モータ等の焼損を常に防止しつつ、しゃ断かんの昇降動作以上への対処がなされる。   By the operation control as exemplified above, it is possible to cope with more than the lifting and lowering operation of the cutting cutter while always preventing the motor and the like from being burned out.

本発明によれば、踏切しゃ断機において障害や妨害によりしゃ断かんの昇降動作に異常が発生した場合に、装置の破損を有効に防止することができる。また、停止時間の長さを短縮することができる。したがって、関連する産業分野において利用価値が高い発明である。   ADVANTAGE OF THE INVENTION According to this invention, when an abnormality generate | occur | produces in the raising / lowering operation | movement of a cutoff wheel by a fault and obstruction in a level crossing cutoff machine, damage to an apparatus can be prevented effectively. Further, the length of the stop time can be shortened. Therefore, the invention has high utility value in the related industrial field.

本発明の踏切しゃ断機のしゃ断かん動作制御ブロックの基本構成を示すブロック図である。It is a block diagram which shows the basic composition of the cutting-off operation control block of the level crossing cutting machine of this invention. 本発明に係るしゃ断かん動作制御方法の構成を示すフロー図である。It is a flowchart which shows the structure of the cutoff operation control method which concerns on this invention. 本発明に係るしゃ断かん動作制御方法におけるしゃ断かん下降時異常の際の動作制御パターンを示すグラフである。It is a graph which shows the operation | movement control pattern in the case of the abnormality at the time of the cutting | disconnection cutting down in the cutting / cutting operation control method which concerns on this invention. 本発明に係るしゃ断かん動作制御方法におけるしゃ断かん上昇時異常の際の動作制御パターンのうち第1パターンを示すグラフである。It is a graph which shows the 1st pattern among the operation control patterns at the time of the abnormalities at the time of a cutoff cutting in the cutoff control operation method concerning the present invention. 本発明に係るしゃ断かん動作制御方法におけるしゃ断かん上昇時異常の際の動作制御パターンのうち第2パターンを示すグラフである。It is a graph which shows the 2nd pattern among the operation control patterns at the time of the abnormalities at the time of cutoff raising in the cutoff control operation method concerning the present invention.

符号の説明Explanation of symbols

1…しゃ断かん動作制御ブロック
2…モータ
3…モータドライバ
4…モータドライバ駆動回路
5…ダイナミックブレーキ機能
6…温度検知手段
7…制御回路
DESCRIPTION OF SYMBOLS 1 ... Cutting operation control block 2 ... Motor 3 ... Motor driver 4 ... Motor driver drive circuit 5 ... Dynamic brake function 6 ... Temperature detection means 7 ... Control circuit

Claims (4)

しゃ断かんをモータの回転によって昇降させる踏切しゃ断機において、しゃ断かん駆動用のモータをモータドライバを介して駆動するモータドライバ駆動回路と、モータ駆動を中断するダイナミックブレーキ機能と、該しゃ断かん駆動に係る温度検知を行う温度検知手段とを備え、さらに、該しゃ断かん下降時において異常が発生した際には正常時の下降時間を所定時間経過した時点で該しゃ断かんのモータ駆動制御をダイナミックブレーキに切り替え、一方該しゃ断かん上昇時において異常が発生した際には該しゃ断かん駆動に係る温度検知に基づき、所定温度以下の場合には定格電流を超えたモータ駆動制御を行う第1パターン制御と、該所定温度を超えた場合には定格電流を超えた駆動とダイナミックブレーキによる駆動中断とを該所定温度以下になるまで交互に繰り返す第2パターン制御を行う制御回路を備えることを特徴とする、踏切しゃ断機。 In a level crossing cutting machine that lifts and lowers a cutting wheel by rotating a motor, a motor driver driving circuit that drives a motor for driving the cutting wheel through a motor driver, a dynamic brake function that interrupts the motor driving, and the cutting wheel driving Temperature detecting means for detecting temperature, and when an abnormality occurs when the shut-off is lowered, the motor drive control of the shut-off switch is switched to a dynamic brake when a predetermined time elapses. On the other hand, the first pattern control for performing motor drive control exceeding the rated current when the temperature is lower than a predetermined temperature based on the temperature detection related to the cutoff driving when an abnormality occurs during the cutoff cutoff, If the specified temperature is exceeded, drive exceeding the rated current and drive interruption due to dynamic braking Characterized in that it comprises a control circuit for the second pattern control of alternately repeating until the temperature below crossing breaker. 前記制御回路の行う第1パターン制御は、より高電流による制御とより低電流による制御とを交互に繰り返すものであることを特徴とする、請求項1に記載の踏切しゃ断機。 2. The railroad crossing breaker according to claim 1, wherein the first pattern control performed by the control circuit alternately repeats control with a higher current and control with a lower current. 前記温度検知手段は、前記モータ駆動制御に係るモータドライバ駆動回路の温度を検知することを特徴とする、請求項1に記載の踏切しゃ断機。 The railroad crossing breaker according to claim 1, wherein the temperature detection means detects a temperature of a motor driver drive circuit related to the motor drive control. 前記制御回路の行う第1パターン制御および第2パターン制御は、所定の異常判定時間を設定しておき、該異常判定時間を経過した場合にはダイナミックブレーキによる駆動中断に切り替えるものであることを特徴とする、請求項1ないし3のいずれかに記載の踏切しゃ断機。
In the first pattern control and the second pattern control performed by the control circuit, a predetermined abnormality determination time is set, and when the abnormality determination time elapses, switching to driving interruption by a dynamic brake is performed. A railroad crossing breaker according to any one of claims 1 to 3.
JP2007233059A 2007-09-07 2007-09-07 Railroad crossing breaker Active JP5007390B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3871946A1 (en) * 2020-02-25 2021-09-01 Siemens Mobility, Inc. Thermal lockout for a motor of a gate crossing mechanism

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JPH0313275U (en) * 1989-06-26 1991-02-12
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JP2002160634A (en) * 2000-11-28 2002-06-04 East Japan Railway Co Control method for up-and-down of barrier bar

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JPH0313275U (en) * 1989-06-26 1991-02-12
JPH11291911A (en) * 1998-04-03 1999-10-26 Nippon Signal Co Ltd:The Electric gate for railroad crossing and method for adjusting deadweight sinking characteristics of gate pole
JP2002160634A (en) * 2000-11-28 2002-06-04 East Japan Railway Co Control method for up-and-down of barrier bar

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3871946A1 (en) * 2020-02-25 2021-09-01 Siemens Mobility, Inc. Thermal lockout for a motor of a gate crossing mechanism
AU2021201012B2 (en) * 2020-02-25 2022-05-12 Siemens Mobility, Inc. Thermal lockout for a motor of a gate crossing mechanism
US11486098B2 (en) 2020-02-25 2022-11-01 Siemens Mobility, Inc. Thermal lockout for a motor of a gate crossing mechanism

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