JP3749111B2 - Control method of stop position and speed of railroad crossing barrier - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for controlling the stop position and speed of a railroad crossing bar provided to block a railroad crossing in a railway.
[0002]
[Prior art]
The railroad crossing breaker receives a signal for constantly raising the railroad crossing from the railroad crossing control device. As a result, the motor is rotated by a fixed torque force inherent to the motor, the cutoff rod is raised, the cam is provided on the operating shaft of the cutoff rod, it is detected that the rising point has been reached, and the drive of the motor is stopped. Apply the brake and stop there. This state is a state in which the crossing is opened. When the train approaches, there is no signal from the level crossing control device that raises the cutoff rod. It detects that the lowering point has been reached by a cam different from the rising point provided on the operating shaft of the kite, stops the motor, and stops breaking at that position by the brake. When the train passes the railroad crossing and receives a signal for raising the cutoff rod from the railroad crossing control device, it enters the ascending operation. This is repeated by the coming and going of the train.
[0003]
As described above, the conventional railroad crossing breaker uses a cam switch that detects the rising point and the lowering point based on the position of the cam provided on the operating shaft of the cutting rod. For this reason, the cam switch had to be adjusted in order to set the stop position of the cutoff rod after installing the cutoff device at the railroad crossing.
[0004]
[Problems to be solved by the invention]
The operation of setting the stop position with the cam switch requires a skillful technique, and thus individual differences are likely to occur. For this reason, the stop position is different for each level crossing, and the operation time depends on the stop position, so it is not the same for each level crossing breaker. In addition, the time from the start of the operation of the cutoff rod to the stoppage will be different for each cutoff machine. Especially during the descent control, the time until the cutoff is completed is preferably within a certain time in relation to the approach time of the train. However, there is a dislike that cannot be set accurately. Further, since the torque of the motor of the circuit breaker is constant, the operation time is influenced by strong winds and the like, so it is not constant and the rise / fall time varies, which is not preferable.
[0005]
Therefore, the present invention solves the conventional problems as described above, and easily sets the operating time and stop position of the cutting rod without depending on the individual skill such as the adjustment of the cam switch which has been necessary until now. An object of the present invention is to provide a method for controlling the stop position and speed of a railroad crossing barrier.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, there is provided a control unit for driving and controlling a motor that raises and lowers the cutting rod and a control unit that is connected to the control unit and sets a descent time and a rising time of the cutting rod. 1 and a setting unit having a second switch that finely adjusts and sets the descending stop position and the ascending / stopping position, and the control unit includes an operation time value of the first switch of the setting unit, a second switch Determine the motor speed from the fine adjustment value of the switch stop position, detect the difference from the set value of the speed due to the influence of wind, etc. while rotating , and drive the motor to increase or decrease the motor torque. It is characterized by controlling the current.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the overall configuration of a railroad crossing breaker. Reference numeral 1 denotes a motor that raises and lowers the barrier 2 and is controlled to rotate or maintain a stopped state by a drive current from the control unit 3. The control unit 3 inputs a control signal (whether to raise) or a three-phase current value information from the current detector 4 and rotation position information of the motor 1 from a crossing control device (not shown), and controls the ascending / descending drive current. The target function is executed by the control logic data and the program logic having the generation and output, detection of the presence / absence of interference during ascent / descent, operation logic at the time of detection of interference, etc. The current detector 4 always detects the current to the motor 1 via the current clamp 6. The information is always input to the control unit 3. Reference numeral 5 denotes a power supply voltage detector, which detects that the power supply has fallen below a certain threshold value and has returned to the rated voltage, and inputs the information to the control unit 3. 8 is a setting unit connected to the control unit 3, and 9 is a setting panel provided in the setting unit 8. As shown in FIG. 2, the switches 11 and 12 for setting the operation time value and the stop position are finely adjusted. Switches 14 and 15 are provided. That is, the switch 11 sets the rising time, and the switch 12 sets the falling time. The switch 14 finely adjusts the ascending stop position, and the switch 15 finely adjusts the descending stop position.
[0008]
The control unit 3 receives a signal for raising the cutoff rod 2 from the level crossing control device, and generates a three-phase drive current that generates the rotation direction of the motor 1 corresponding to the rise and fall. Since the position information obtained from the motor 1 has reached the ascending / descending points, the drive current is controlled to stop the motor 1 there. On the other hand, the drive current to the motor 1 is picked up by the clamp 6 and input to the current detector 4 and input to the control unit 3 as current value information. The controller 3 controls the motor 1 while monitoring the presence or absence of interference from the current value from the current detector 4 during motor operation. If you reach the ascending or descending point without interruption, stop at that point. When it is determined that the blocking rod 2 is disturbed during the control for raising / lowering, the control is performed such that the lifting is once lowered when it is raised and once raised when it is lowered. Moreover, when the motor drive output from the control part 3 is lost, it is the same as before that the blocking rod 2 descends by its own weight.
[0009]
In the setting panel 9, the rotational speed of the motor 1 is determined from the values of the switches 14 and 15 for finely adjusting the stop position and the values of the switches 11 and 12 for setting the operation time. The drive current of the motor 1 is controlled so as to increase or decrease the torque of the motor 1 by detecting the difference from the set value of the rotation speed due to the influence of wind or the like. In addition, when the stop point of each of the rise and fall is reached, another drive current is controlled so as to cancel the change in the position information so that the position remains at that point.
[0010]
In the example illustrated here, the operation time is selected by the rotary switches 11 and 12, and the stop position is designated by looking at the stop position of the blocking rod 2 and by using the switches 14 and 15 for instructing the up and down directions. Although it is assumed that the adjustment is performed, it goes without saying that the form of the switch can be any value that can be confirmed and the result, such as numeric keypad operation and digital display, volume operation and numerical display, etc. There is no. Information set by the switch 11, 12 or 14, 15 is sent to the control unit 3 and stored therein. The control unit 3 creates an operation pattern of the motor 1 based on the set operation time and stop position, controls the drive current of the motor 1 accordingly, and controls the rotation and stop of the cutoff rod 2.
[0011]
In FIG. 2, the operation time can be set by adjusting the ascending / descending time to the position to be designated by the switches 11 and 12. The stop position can be set by slightly moving the cutoff rod 2 in the designated direction (up or down) by pressing down the switches 14 and 15 and operating it to an arbitrary set position.
[0012]
【The invention's effect】
The present invention is as described above, and in the railroad crossing breaker, a control unit that drives and controls a motor that raises and lowers the blocking rod, and a first unit that is connected to the control unit and sets the falling time and rising time of the blocking rod. A setting unit having a switch and a second switch for finely adjusting and setting the descending stop position and the ascending stop position, and the control unit includes a value of an operating time of the first switch of the setting unit, and a second switch The rotational speed of the motor is determined based on the value of fine adjustment of the stop position.During rotation, the difference between the rotational speed setting value due to the influence of wind, etc. is detected, and the motor drive current is adjusted to increase or decrease the motor torque. Because it controls, the setting of the stop position and operation time of the cutting rod is simplified compared to the conventional one, the adjustment of the cam switch that has been required up to now is eliminated, it does not depend on the individual skill, and the predetermined setting of the blocking rod Stop position can be set in operation time. In addition, it is possible to save the adjustment, and since the setting is performed by the switch of the setting unit, excellent effects such as visualization of the operation can be expected.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an overall configuration of a railroad crossing breaker showing an embodiment of the present invention.
FIG. 2 is a configuration diagram of a setting panel.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Motor 2 Cut off rod 3 Control part 4 Current detector 5 Power supply voltage detector 6 Current clamp 8 Setting part 9 Setting panel
11, 12 Switch for setting operation time value
14, 15 Stop position fine adjustment switch

Claims (1)

In a level crossing cutting machine, a control unit that drives and controls a motor that raises and lowers the cutting rod, a first switch that is connected to the control unit and sets a descent time and a rising time of the cutting rod, and a descent stop position and a rising stop position A setting unit having a second switch that is finely adjusted and set is provided, and the control unit rotates the motor from the value of the operating time of the first switch of the setting unit and the value of the fine adjustment of the stop position of the second switch. determine the speed, during rotation, it detects the difference between the set value of the rotational speed due to the influence of wind, shielding crossings and controlling the drive current of the motor so as to increase or decrease the torque of the motor cross How to control the stop position and speed of the kite.

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