JP3964889B2 - Foreign matter removal device for track branch - Google Patents

Description

  The present invention relates to a foreign matter removing device for a track branching portion that removes foreign matter between a basic rail of a railroad track branching portion and a tongrel by injecting air or water.

  An example of the foreign matter removing apparatus as described above is disclosed in Patent Document 1, for example. In this foreign matter removing device, the foreign matter existing between the basic rail and the tongrel is removed by injecting the compressed air so that the space between the basic rail of the track branching portion and the tongrel is almost directed toward the tip of the tongrel. The This jet of compressed air is performed for a predetermined time based on the point switching signal, or for a predetermined time based on a snowfall or snow detection signal.

JP-A-7-54319

  In the technique of the above-mentioned document, as described above, the foreign matter is removed only when the points are switched or when snowfall or snowfall is detected. By the way, there is no disclosure in the above document regarding the processing in the case where foreign matter is not removed by air injection at the time of switching points.

  An object of this invention is to provide the foreign material removal apparatus which tries to remove a foreign material, even when a foreign material is not removed by the air injection at the time of point switching.

A foreign matter removing apparatus for a track branching portion according to the present invention includes a track branching portion that moves the tongue rail between a localization where the basic rail and the tongrel are opened and a dislocation where the basic rail and the tongrel are closed. The foreign matter dropped between the basic rail and the tongrel is removed by jetting compressed air or water from the basic rail to the tongrel . The orbital branching unit performs a retry operation in which when the position of the Tongleil becomes a point switching failure when switching from the localization to the dislocation, the Tongler reverses and returns to the localization, and is switched to the dislocation again. In the retry operation, the compressed air or water is injected while the Tongrel returns to the orientation.

  In the foreign matter removing apparatus for the track branching portion configured as described above, since the compressed air or water is injected during the retry operation performed when the point switching becomes defective, the foreign matter is removed during the retry operation. The possibility is high, and the probability of occurrence of point inversion can be reduced. Normally, when point conversion does not occur, an attendant goes to the site and manually performs a re-switching operation. During this time, trains and trains must be stopped, causing delays in operation. However, as described above, if the point inversion occurrence probability is reduced, the probability of delay in operation can also be reduced.

  Note that the retry operation can be repeatedly performed until the Tongler is normally switched. This repetition can be performed continuously for a predetermined time. If switching cannot be performed normally within this time, processing can be performed as a switching failure. In addition, the foreign matter removing apparatus includes, for example, a point switching failure detection unit, a retry control unit that performs a retry operation on the basic rail and the tongrail in response to a point switching failure detection signal from the detection unit, and the point switching unit. It is also possible to provide injection control means for injecting compressed air or water according to the defect detection signal.

  As described above, according to the present invention, the basic rail is injected by injecting compressed air or water during the retry operation in which the tongrel moves between the fixed position and the shifted position at the time of point switching failure. It is possible to remove foreign matter between the two and the tongrel, the probability of switching failure can be reduced, and a stop of the train or the like can be prevented in advance.

Embodiments of the present invention will be described below with reference to the drawings of a compressed air foreign matter removing apparatus.
As shown in FIGS. 4 to 7, the foreign matter removing device for the track branching portion according to one embodiment of the present invention is composed of piping units 1 and 2, nozzle portions 3 and 4, an air source device 5, an electromagnetic switching valve 6 and the like. Has been. In the figure, 7a and 7b denote basic rails, and 8a and 8b denote tongrels. The Tongrel 8a corresponds to the basic rail 7a, and the Tongrel 8b corresponds to the basic rail 7b. The state shown in FIG. 4 is a stereotaxic position, the basic rail 7a and the Tongler 8a are in close contact and closed, the basic rail 7b and the Tongler 8b are open, and the tip of the Tongrel 8b, FIG. The left end side of is open. From this state, the switch is moved to the range position by the operation of a not-shown switch, the tongrel 8a, 8b moves, the tip of the tongrel 8a (the left end in FIG. 4) opens, and the tongrel 8b opens to the basic rail 7b. Close contact with.

  As shown in FIGS. 6A and 6B, the piping unit 1 closes both ends 11 and 12 of the square pipe 10 having a slightly flat cross section, and as shown in FIG. Two nozzle connection ports 13 are drilled up and down at appropriate intervals along the longitudinal direction on the wide surface, and as shown in FIG. A plurality of threaded members 14 for mounting and air supply passages with respect to the rails at appropriate intervals, and four in this embodiment, are planted by welding. In the figure, 25 is a nut. The length of the piping unit 1 is a length that substantially corresponds to the length of the portion where the tongrel 8a is in close contact with the basic rail 7a as shown in FIG.

  The piping unit 2 is paired with the piping unit 1, and when the piping unit 1 is attached to one basic rail 7a, the piping unit 2 is attached to the other basic rail 7b and has the same shape. Is used by turning it upside down.

  In this embodiment, nine nozzle portions 3 are provided in each of the piping units 1 and 2. As shown in FIG. 6 (b), the configuration at one location is a convex nozzle member 15 attached so as to cover one of the nozzle connection ports 13 formed in the piping unit 1 by two, and the other nozzle. It consists of a blind plate 16 attached so as to close the connection port 13. As shown in FIG. 5B, the nozzle member 15 is provided with two air injection ports 17 and 18, and the directions thereof are a downward angle α and a lateral angle θ with respect to the direction of the basic rail 7. Have In this embodiment, the downward angle 7 °, the lateral angle 5 °, the downward angle 7 °, and the lateral angle 15 ° of the air injection port 18 are set. The nozzle member 15 and the blind plate 16 are arranged so that the top and bottom are alternately different in the longitudinal direction of the piping units 1 and 2. Reference numeral 19 shown in FIG. 6B denotes an attachment screw, which attaches the nozzle member 15 and the blind plate 16 to the piping units 1 and 2 via packing (not shown). The nozzle member 15 is symmetrical between the piping unit 1 and the nozzle unit 15. Approximate directions of the air injection ports 17 and 18 of the nozzle member 15 attached to the piping units 1 and 2 are directions indicated by solid line arrows and virtual line arrows in FIG. 4, and toward the tip side of the Tongrel 8a and 8b. Inject air.

  As shown in FIG. 7, the air source device 5 includes an air compressor 20, a compressed air reservoir 21, and their attached devices, and is compressed via an electromagnetic switching valve 6 as a switching means and pipes 23 and 24. The air reservoir 21 is connected to the piping unit 1 and the piping unit 2. The pipes 23 and 24 are each branched into four and connected to the inner hole 26 in the mounting screw portion 14 as shown in FIG. The electromagnetic switching valve 6 is switched to the switching position 6a by energizing the solenoid MV1, connected to the compressed air reservoir 21 to the piping unit 1, and switched to the switching position 6b by energizing the solenoid MV2, and compressed to the piping unit 2. The air reservoir 21 is connected.

  As shown in FIG. 4, the piping units 1 and 2 are provided for the both side basic rails 7a and 7b, respectively. The attachment state with respect to the rail of the piping units 1 and 2 is as showing to Fig.5 (a), (b). That is, a hole through which the mounting bolt 14 is inserted is formed in each abdomen of each of the basic rails 7a and 7b, and a nut 25 is screwed and fixed to the bolt 14 inserted through the hole. Four projecting end portions of the pipe 23 are connected to the four projecting end portions. The piping unit 1 and the nozzle portion 3 are accommodated in the gap 28 between the abdominal portion of the basic rail 7a and the abdominal portion of the tongrel 8a without any trouble. Note that the state indicated by the phantom line in FIG. 5A is a state in which the tongrel 8a is opened.

  Control of the electromagnetic valve 6 mentioned above is performed by the control part 40 shown in FIG. The control unit 40 includes, for example, a CPU, operates according to a predetermined program, and is installed at a position away from the installation position of the branch unit.

  Although not shown, the above-described switch is provided with a motor capable of normal rotation and reverse rotation in order to drive the tongrel. The control unit 40 is provided with a timer T for waiting for a predetermined time. A rotation direction detector 42 for detecting the rotation direction of the motor is connected. In addition, the control unit 40 includes time-counting means, for example, a first timer T1, for measuring the time during which the motor is operated in order for the turning machine to move the Tongrel 8a, 8b from the normal position to the inverted position. Although not shown, a detector that detects whether or not the Tongrel 8a and 8b have contacted the corresponding basic rails 7a and 7b is also connected to the control unit 40. Furthermore, the control unit 40 also includes a time measuring means for measuring the time during which a retry operation described later is performed, for example, a second timer T2. Further, a pressure detecting means for detecting the pressure value of the compressed air reservoir 21, for example, a pressure sensor 44 is also connected to the control unit 40. Furthermore, the control unit 40 also includes a train detector 46, for example, an ultrasonic sensor, that detects whether or not the train has passed over the branch portion. The control unit 40 is also provided with notifying means, for example, a buzzer 48, for notifying the injection of compressed air. In addition, the buzzer 48 can be installed in the vicinity of the branch portion in addition to the control unit 40.

  In the control by the control unit 40, the preventive injection routine shown in FIG. This is to inject compressed air every time the train passes through the branch.

  That is, when the train detector 46 detects a train and the signal is turned on (step S2), the train passes (step S4), and the signal of the train detector 46 is turned off (step S6), the air reservoir 21 It is determined whether the pressure value is a predetermined value, for example, 0.78 MPa or more (step S8). If the answer to this determination is no, the process returns to (Step S2). If the answer to this determination is yes, that is, if the train passes and the pressure in the air reservoir 21 is equal to or higher than a predetermined value, the timer T is activated (step S10). The timer T measures a predetermined time, for example, 10 seconds.

  After the elapse of the predetermined time, that is, 10 seconds after the train passes, the buzzer 48 is sounded, for example, for 3 seconds (step S12) to notify in advance that air injection is performed. Thereafter, the solenoid valve is turned on (step S14). For example, when the branch portion is in the state shown in FIG. 4, the solenoid MV <b> 2 of the electromagnetic valve 6 is turned on so that compressed air is supplied to the piping unit 2. In the state where the branching portion is switched to the state opposite to the state shown in FIG. 4, the solenoid MV <b> 1 is turned on so that the compressed air is supplied to the piping unit 1. This injection of compressed air is continued for a predetermined time, for example, 2 seconds (step S16), and the solenoid valve 6 is turned off (step S18). And it is judged whether the point change command is supplied from the outside (Step S20), and when not supplied, it returns to Step S2. Therefore, while the point change command is not supplied, compressed air is injected over a predetermined time each time the train passes.

  When the point change command is supplied, the retry injection routine shown in FIG. 1 is executed. For example, as shown in FIG. 4, it is assumed that the first basic rail 7a and the first tongrel 8a are closed and the second basic rail 7b and the second tongrel 8b are opened. From this state, the first basic rail 7a and the first tongrail 8a are opened, and the point of the motor of the rotary machine is switched to the inverted position in which the second basic rail 7b and the second tongrail 8b are closed. Drive. However, even if the motor is driven for a predetermined time, for example, 8 seconds or more as shown in FIG. 3 (a), if the second basic rail 7b and the second Tongler 8b are not closed, the foreign matter is second. It is determined that it exists between the basic rail 7b and the second Tongle rail 8b, and the motor is reversely rotated to return to the localization state shown in FIG. This is called a retry operation.

  In synchronism with the start of the reverse rotation, the buzzer is sounded for a predetermined time, for example, 3 seconds as shown in FIG. 3B, and then compressed air is supplied for a predetermined time, for example, 2 seconds, as shown in FIG. It injects between the 2nd basic rail 7b and the 2nd Tongleil 8b. Then, when returning to the original localization state, the motor is reversely rotated again so that the second basic rail 7b and the tongrel 8b are in an inverted state that closes.

  At this time, if the second basic rail 7b and the Tongler 8b are closed during the operation of the motor for a time shorter than 8 seconds, that is, when the motor can be switched to the opposite position, the foreign matter has been successfully removed. Return to. At this time, if the second basic rail 7b and the tongrel 8b are not closed even if the motor is operated for 8 seconds or longer as shown in FIG. The operation is performed, and along with this, the compressed air is injected.

  When the foreign matter cannot be removed even if such a retry operation and the accompanying re-injection of compressed air are performed for a predetermined time, for example, 50 seconds, the inversion has been detected, and for example, the buzzer 48 is sounded.

  In the retry injection routine shown in FIG. 1, when a point change command is supplied, a timer T1 for counting the time during which the motor is operating for point switching is turned on (step S22).

  Next, it is determined whether the second basic rail 7b is in contact with the second Tongler 8b even if the point switching motor is operated for 8 seconds or longer (step S24). If the answer to this determination is no, the switch has been made normally (because the second basic rail 7b and the second tongue rail 8b have contacted each other in a time shorter than 8 seconds), so the preventive injection routine shown in FIG. Return to step S2.

  If the answer to the determination in step S24 is yes, it is considered that a foreign object exists between the second basic rail 7b and the second tongler 8b, so that the motor is reversed. It is determined whether or not the reverse rotation of the motor has been performed (step S26), and step S26 is repeated until the reverse rotation is performed. When the reverse rotation is performed, it can be determined that the retry operation has started.

  Then, it is determined whether the pressure of the air reservoir 21 is 0.78 MPa or more (step S28). If the answer to this determination is no, the process returns to step S22, and the retry injection routine is performed again from the beginning. If the answer to step S28 is yes, the buzzer 48 is sounded for 3 seconds (step S30), and then the solenoid MV2 of the solenoid valve 6 is turned on (step S32), and this state is continued for 2 seconds (step S34). Then, the solenoid MV2 is turned off (step S36). Therefore, the compressed air is injected between the basic rail 7b and the tongrel 8b until the tongrel 8b returns to the localization state shown in FIG.

  Next, it is determined whether the retry operation is not repeated (step S38). That is, it is determined whether or not a predetermined time of 50 seconds has elapsed since the start of the retry operation. If it has not elapsed, the motor is operated so that the second basic rail 7b and the second Tongle rail 8b are closed again. As a result, when the motor continues to operate for 8 seconds or more, the above-described retry operation and the accompanying operation are performed. Compressed air is injected.

  The answer to the determination in step S38 is yes, that is, the retry operation and the accompanying compressed air injection are performed for 50 seconds, but the foreign matter cannot be removed and the conversion cannot be performed. That is, non-conversion is detected and non-conversion detection is notified. Subsequently, it is determined whether or not a point re-conversion command is supplied from the outside to the control unit 40 (step S42). If the answer to this determination is yes, the process is executed again from step S22. If the answer to this determination is no, this retry injection routine is terminated.

  Thus, when the Tongrel moved so as to come into contact with the basic rail cannot contact the basic rail, and when the Tongrel is returned to the opened state again, the compressed air is supplied between the Tongrel and the basic rail. Since it is injected in the meantime, the compressed air can be injected until the Tongleil returns to the original position, and the probability that foreign matter can be removed increases.

  Although the above description has been made on the assumption that the basic rail 7a and the Tongler 8a are in contact with each other and the basic rail 7b and the Tongler 8b are switched from the open state as shown in FIG. On the other hand, the case where the basic rail 7a and the Tongrel 8a are opened and the basic rail 7b and the Tongrel 8b are closed is also the same as described above.

  In the retry operation injection routine shown in FIG. 1, the retry operation is repeated for a predetermined time, and the compressed air is injected along with the retry operation. However, the retry operation is performed at least once, and the compressed air is injected accordingly. It can also be done.

  Moreover, in said embodiment, although the switching valve 6 was used and the compressed air was switched to the piping units 1 and 2, for example, two electromagnetic on-off valves were connected to the piping units 1 and 2. Compressed air may be supplied to the piping units 1 and 2 by providing them correspondingly and individually opening and closing these electromagnetic on-off valves.

It is a flowchart which shows the retry operation | movement injection routine of the foreign material removal apparatus of the branch part of one Embodiment of this invention. It is a flowchart of the prevention injection routine of the foreign material removal apparatus of FIG. It is a time chart figure of the retry operation | movement injection routine of the foreign material removal apparatus of FIG. It is a top view which shows the installation state of a foreign material removal apparatus. It is the side view of the nozzle part of the foreign material removal apparatus of FIG. 1, and its expanded vertical side view. It is the top view and front view of a piping unit of a foreign material removal apparatus. It is a circuit diagram of the air source apparatus and control apparatus of a foreign material removal apparatus .

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 2 Piping unit 3 4 Nozzle part 5 Air source apparatus 6 Electromagnetic switching valve 7a 7b Basic rail 8a 8b Tongue rail 20 Air compressor 21 Air reservoir 40 Control part

Claims (1)

Between the basic rail of the track branching section that moves the tongrel between the positioning where the basic rail and the tongrel open and the dislocation where the basic rail and the tongrel close. In the foreign matter removing apparatus for the track branching portion that removes the fallen foreign matter by injecting compressed air or water from the basic rail side to the Tongrel side ,
The orbital branching unit performs a retry operation in which when the position of the Tongleil becomes a point switching failure when switching from the localization to the dislocation, the Tongler reverses and returns to the localization, and is switched to the dislocation again. Done
In the retry operation, the foreign matter removing device for the orbital branching portion that injects the compressed air or water while the Tongrel returns to the normal position.

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