KR20080010912A - Automatic brake system of a railway crossing - Google Patents

Abstract

An automatic brake system of a railway crossing is provided to prevent an accident due to a high-voltage current by connecting a blocking member to a blocking bar by an insulating member. An automatic brake system of a railway crossing includes a body(11), a rotating shaft(12), a blocking bar(20), a lifting member(30), and a control member. The rotating shaft is rotatably installed in an upper part of the body. The blocking bar is connected to the rotating shaft by a bracket(13). The blocking bar moves up and down in the rotation of the rotating shaft. The lifting member rotates the rotating shaft. The control member controls the lifting member by using a signal of a detecting member for detecting the entering and passing of a train. A connection of the bracket is connected to both ends of the rotating shaft rotatably installed in the upper part of the body. The blocking bar is installed in a holder(13b) fixed to the bracket.

Description

Automatic brake system of a railway crossing

1 is a perspective view of an automatic crossing device according to the present invention,

2 is a plan view of a crossing block device according to the present invention,

Figure 3 is a partially cutaway perspective view showing an extract of the screw jack unit of the lifting means shown in Figure 1,

Figure 4 is an exploded perspective view showing an excerpt of the blocking liver

5 is a block diagram schematically showing a control means according to the present invention;

6 is a circuit diagram showing an embodiment of an uninterruptible power supply means;

FIG. 7 is a circuit diagram illustrating an example of an electrostatic detection unit illustrated in FIG. 6.

8 is a waveform diagram illustrating a waveform of a voltage applied to the boosting unit illustrated in FIG. 6.

9 is a plan view showing an operating state of the crossing block device according to the invention,

The present invention relates to a railroad crossing blocking device, and more particularly, to a railroad crossing having an improved structure for rotating the blockage.

Typically, railroad crossings are provided with breakers for smooth operation of trains and safe passage of vehicles and pedestrians passing through the railroad crossings. Such a breaker is detected by a sensing device that detects the passage of a train at a certain distance from the crossing, and is driven by passing the sensed signal to the breaker driver.

An example of such a crosswalk breaker is disclosed in Korean Utility Model Registration No. 0044664. The circuit breaker is connected to the control box connected to the first and second sensors embedded in the lower rail, the pinion is rotated by a motor that is forward and reverse rotation, and the structure is rotated between the block by the rack coupled to the pinion have.

Registered Utility Model No. 0107325 has a sensing unit having a first sensing sensor and a first speed sensor, and a second sensing unit having a second sensing sensor and a second speed sensor at a predetermined distance from the first sensing unit. Disclosed is a configuration in which the first and second detection units have a comparison circuit for comparing signals sensed through an interface input circuit and a central processing unit having a check circuit connected to the comparison circuit to set an operating time of the circuit breaker. have. Also, registered utility model No. 0333469 discloses a hydraulic cylinder and a hydraulic breaker using a crank arm.

The circuit breaker as described above has a relatively complicated structure for rotating between the blocks, and cannot control the inertial force during the rotation between the blocks, and it is not easy to drive the motor during a power failure. In particular, the inter-block is mostly made of synthetic resin (FRP) or steel, so when strong winds blow, the inter-block is supported separately or stored separately, and thus tends to lose its function as inter-block. In addition, there is a problem that a short circuit accident occurs or the breaker is damaged due to shaking between the breaks during strong winds and contact with the mains power transmission line installed on the upper portion of the railway.

In view of such a point, Korean Patent No. 0286436 discloses a railroad crossing breaker. The crossing blocker inserts a short tubular connecting member inside two main body segments formed in a tubular shape by plastic material, and penetrates the connecting member and the pipe wall of the main body segment radially in the vicinity of the connecting end of the main body segment. It is provided with a pair of scoops, and has a U-shaped metal spring for maintaining the piercing state of the scoops.

Such a circuit breaker has an advantage in that the length can be easily set, but the structure according to the connection is relatively complicated, and the insulation property is not good.

The present invention is to solve the problems as described above, it is possible to reduce the inertial force at the time of stopping during rotation between the blocking, the structure is relatively simple, automatic crossing crossing that can improve the reliability according to the operation during power failure The object is to provide a device.

Another object of the present invention is to prevent the safety accident that can be caused by the inter-block intermittent contact with the power transmission line by the strong wind, crossing railroad crossing that can fundamentally prevent the hassle to separate and separate the intermittent by the strong wind In providing a device.

The railroad crossing differential blocking device of the present invention for achieving the above object,

A main body on which the rotating shaft is installed; An interception block connected by the rotating shaft and the bracket; Elevating means having a screw jack unit provided on the main body, the screw jack unit having a jack screw shaft connected to the rotary shaft by a connecting means, and a driving motor for driving the screw jack unit to elevate the jack screw shaft;

And a detecting means for recognizing a signal for entering and passing a train to the crossing and a control means for controlling the driving motor by a signal sensed by the detecting means.

In the present invention, the rotating shaft is for controlling the speed of the rising and falling between the blocking, the sensor targets installed on the rotating shaft to sense the position of the rising and falling between the blocking and the main body adjacent to the sense targets Position control means having proximity sensor units installed.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the automatic crosswalk automatic blocking device according to the present invention.

The railroad crossing shutoff device according to the present invention is installed at the railroad crossing of the railroad to control the passage of a vehicle, such as a pedestrian at the time of passage of the train, one embodiment of which is shown in FIGS.

Referring to the drawings, the railroad crossing blocker is connected to the main body 11, the rotary shaft 12 is rotatably installed on the upper side of the main body 11, the rotary shaft 12 and the bracket 13 by the rotary shaft Recognizing between the block 20 between the rising and falling during the rotation of the 12, the elevating means 30 installed on the main body 11 for rotating the rotary shaft 12, and the train entering and passing signal to the crossing And a control means 60 for controlling the lifting means 30 by the signal of the detecting means 51.

The installation of the inter-block 20 for the main body 11 is coupled to the connecting portion 13a of the bracket 13 at both ends of the rotating shaft 12 rotatably installed on the upper side of the main body 11, It has a structure in which the interception block 20 is provided in the holder 13b fixed to this bracket 13. The bracket 13 is not limited to the above-described embodiment, and may be any structure as long as the bracket 13 can support the interlocking block 20 with respect to the rotation shaft 12.

The blocking section 20 includes a blocking member 21 having a hollow as shown in FIGS. 1 and 4, and an insulating member 22 interconnecting the blocking members 21. The insulating member 22 has an inserting portion 22a at which both ends are inserted into the hollow of the blocking member 21. The inserting portion 22a and the blocking member 21 are formed by pins or bolts. Maintain a bond. The blocking member 21 may be formed in a circular, square, or triangular cross section, but is not limited thereto, and any tube having a hollow therein may be used. The blocking member may be made of a light metal or synthetic resin.

The lifting means 30 is installed in the main body as shown in Figures 1 to 3 to rotate the rotating shaft 12 forward and backward at a predetermined angle, the rotation shaft 12 of the screw jack unit 40 Connection means 31 for connecting the jack screw shaft 41 and the drive unit 32 for driving the screw jack unit 40 to raise and lower the jack screw shaft 41.

As shown in FIGS. 2 and 3, the screw jack unit 40 includes a housing 46 installed in the main body 11, and rotatably installed in the housing 46, and the jack screw shaft 41. And a worm wheel 42 which is screwed together to elevate the jack screw shaft 41, and a worm 43 engaged with the worm wheel 42. The driving shaft 44 of the worm 43 includes a housing 46. It protrudes to both sides of. And the lower side of the housing 46 is provided with a cover 45 surrounding the jack screw shaft 41 to be elevated.

The connecting means 31 is to connect the jack screw shaft 41 and the rotating shaft 12, the connecting rod 31a and the end of the connecting rod 31a and jackscrew shaft (installed on the rotating shaft 12) And a link 31b that hinges the end of 41. The connecting means 31 is not limited to the above-described embodiment, and may be any structure as long as it can convert the lifting displacement of the jack screw shaft 41 into the rotation displacement of the rotation shaft 12.

In addition, the screw jack unit 40 is driven by the driving unit 32 so that the jack screw shaft 41 can be raised and lowered, and the motor pulley 32b and the driving pulley 32b installed on the shaft of the motor are provided. And a belt 32d for connecting the driven pulley 32c installed on the drive shaft 44 of the worm 43, the motor may be a geared motor having a speed reducer, which is directly connected to the drive shaft of the worm. It may be.

The elevating means 30 further includes a manual drive unit 35 for manually rotating the intermittent block 20. The manual driving unit includes a sprocket 35a installed on the other side of the drive shaft 44 and a driven sprocket 35c installed on the main body and driven by a driven sprocket 35a and a chain 35b, wherein the driven sprocket ( The axis of 35c is provided with a handle engaging portion 38 to be rotated by a separate handle (36).

As shown in FIG. 1, the rotating shaft 12 and the main body 11 further include a stopping means 39 for defining a rotating position of the rotating shaft in order to define a lowering position between the blocks. The stopping means 39 further includes a catching member 39a provided on the rotating shaft 12 and a stopper 39b that contacts the catching member 39a to define a rotation angle of the rotating shaft 12. The stopping means 39 is not limited by the embodiment described above.

Meanwhile, the first, second, third, and fourth sensor targets 51 for controlling the speed of rising and falling of the interlocking block 20 are installed on the rotating shaft to sense the positions of the rising and falling of the interlocking block. 52, 53, 54, the first and second, each of the first, second, third and fourth, the sensor target (51-54) and the deceleration decelerator 55, and the falling stop sensor (56) And a position control means 50 having a rise detection sensor 57 and rise stop sensors 58. The first, second, third and fourth sensor targets 51-54 installed on the rotating shaft 12 are provided with protrusions (not shown) for defining respective positions. It works. The falling deceleration and falling stop sensors 55 and 56 and the rising deceleration and stop sensors 57 and 58 preferably use proximity sensors, but are not limited thereto. The position control means is not limited to the above-described embodiment and may be any structure as long as it can detect and control the lift position of the jack screw shaft.

 The control means 60 is a crossing control unit 61 having a detection means for detecting a train entering and passing signal to the crossing as shown in FIG. Uninterruptible power supply 70 for supplying power by converting the power supply, the signal transmitted from each sensor of the position control means 50 and the power supplied when the power failure from the uninterruptible power supply 70 and the crossing control unit ( And a main control unit 80 for controlling the motor by the signal supplied from 61. Reference numeral 62 is an inverter for the forward and reverse rotation of the motor, 63 is a frequency meter for determining the periodic replacement time and the breaker replacement time by counting the number of times of operation.

The uninterruptible power supply unit 70 will be described with reference to FIGS. 6 to 8 below. The uninterruptible power supply unit 70 includes an electrostatic detection unit 71, a microprocessor 73, and a boost unit. As shown in FIG. 7, the power failure detecting unit 71 transforms the voltage through a pressure reducing transformer T1 connected to a commercial AC power source 75, converts the voltage to a DC voltage through a bridge diode, and converts the voltage into a DC voltage through a bridge diode. A comparator 77 for comparing the smoothed DC voltage with the reference voltage generated by dividing the bias power supply VCC by a voltage divider resistor and outputting the comparison result to the microprocessor 73 is provided. Therefore, the microprocessor 73 may determine whether there is a power failure by whether the voltage output from the comparator 73 is high or low. When the microprocessor 73 determines that the power failure, the microprocessor 73 turns on the transistor Q3 so that a current flows to the driving coil of the relay switch LS1. In addition, the voltage of the pattern shown in FIG. 8 is alternately applied at both ends of the primary coil middle tap of the boosting transformer T2 connected to the 24V power supply applied as a capacitor to the middle tap of the primary coil so that a current flows. The transistors Q1 and Q2 on the corresponding paths are turned on / off, respectively. Then, the relay switch LS1 connects the AC output lines ACOUT1 and ACOUT2 of the motor supply with both ends of the secondary coil of the boost transformer T2 to convert AC power from the storage battery to AC and supply AC power. Can be.

Automatic crossing device according to the present invention configured as described above 10 as shown in Figures 1 to 9 when the train enters the crossing section by the detection sensor of the crossing control unit 61, the detection sensor By the signal transmitted by the main control unit 80 to recognize the information that the train enters. At this time, the main controller 80 controls the inverter 62 so that the motor 32a of the driving unit 32 rotates forward.

As described above, when the motor 32a is rotated forward, the rotational force is transmitted to the drive shaft 44 by the drive pulley 32b, the driven pulley 32c, and the belt 32d so that the worm 43 installed thereon rotates. . As the worm 43 rotates, the worm wheel 42 engaged with the worm 43 rotates to raise the jack screw shaft 41.

As the jack screw shaft 41 rises, the rotating shaft 12 and the bracket 13 connected by the connecting means 31 rotate, and the blocking rod 20 supported thereto falls.

The lowering deceleration sensor 55 is operated by the first sensor target 51 of the position control means 50 while the inter-block 20 is lowered by the rotation of the rotary shaft 12. The signal of the falling deceleration sensor (55) is sensed by the main controller 80, and the main controller 80 decelerates the speed of the motor to close the stopping point 20 from the point of stopping between the interruptions. The descent speed is detected. When the inter-block 20 reaches the stop position, the falling stop sensor 56 is operated by the second sensor target, and the main controller 80 stops the rotation of the motor 32a by this signal.

 When the train passes in the state where the interception block 20 is lowered as described above, the passage of the train is sensed in the crossing section by the detection sensor of the crossing control unit 61, and the signal transmitted by the detection sensor As a result, the main controller 80 recognizes the information that the train has passed. In this case, the main controller 80 controls the driver 32 through the inverter 62 so that the motor 32a is reversely rotated.

When the motor 32a is reversely rotated as described above, the rotational force is transmitted to the drive shaft 44 by the drive pulley 32b, the driven pulley 32c, and the belt 32d so that the worm 43 installed thereon rotates backward. do. As the worm 43 rotates, the worm wheel 42 engaged with the worm 43 rotates backward, thereby lowering the jack screw shaft 41.

As the jack screw shaft 41 is raised, the rotating shaft 12 and the bracket 13 connected by the connecting means 31 are reversely rotated, and the interceptor 20 supported by the jack screw shaft 41 is raised.

The rising / deceleration sensor 57 is operated by the third sensor target 53 of the position control means 50 in the process of raising the blocking section 20 by the rotation of the rotary shaft 12. The signal of the rising / deceleration sensor 57 is sensed by the main control unit 80, and the main control unit 80 decelerates the speed of the motor so as to cut off the block from the point close to the stopping time due to the rising of the blocking. 20) will detect the rate of ascent. This deceleration of the ascending speed prevents the blocking section 20 from shaking by the inertial force caused by the rising when the blocking section is stopped after the rising. When the inter-block 20 reaches the rising stop position, the rising point sensor 58 is operated by the fourth sensor target, and the main controller 80 stops the reverse rotation of the motor 32a by this signal. Let's go.

On the other hand, since the blocking member has a structure in which the blocking members 21 having a hollow are connected by the insulating member 22, even if the blocking member 21 is in contact with the power transmission line by a strong wind, it is essential that a high current flows through the blocking member. Can be blocked by Therefore, there is no need to store the separation between strong winds or typhoons as in the prior art.

As described above, the circuit breaker driven by the AC motor is operated by the commercial AC power source 75. When the commercial AC power source 75 is not supplied due to a power failure, the uninterruptible power supply unit 70 may be operated as described above. When a signal corresponding to a power failure is output from the power failure detection unit 71, the microprocessor 73 determines that the power failure is performed, and turns on the transistor Q3 in the current conduction path so that current flows through the driving coil of the relay switch LS1. Let's do it. In addition, the voltage of the pattern shown in FIG. 8 is alternately applied at both ends of the primary coil middle tap of the boosting transformer T2 connected to the 24V power supply applied as a capacitor to the middle tap of the primary coil so that a current flows. The transistors Q1 and Q2 on the corresponding paths are turned on / off, respectively. Then, the relay switch LS1 connects the AC output lines ACOUT1 and ACOUT2 for supplying the motors with both ends of the secondary coil of the boost transformer T2 to convert the AC power from the DC power source into the AC phase to boost the motor power. ) Can be supplied.

As described above, the railroad crossing blocking device according to the present invention has a relatively simple structure capable of rotating the inter-block and prevents the inter-block from shaking by the inertia force by controlling its speed in the falling position and the rising position of the inter-block. . In addition, since the blocking members are connected by the insulating member between the blocking, it is possible to prevent the limited accident due to the high voltage current flowing through the blocking when in contact with the power transmission line.

In particular, the automatic crosswalk automatic shutoff device according to the present invention can improve the reliability due to driving because the power supply of the battery can be converted into an alternating voltage at full power outage.

 Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible.

Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (6)

A main body on which the rotating shaft is installed; An interception block connected by the rotating shaft and the bracket; Elevating means having a screw jack unit provided on the main body, the screw jack unit having a jack screw shaft connected to the rotary shaft by a connecting means, and a driving unit driving the screw jack unit to elevate the jack screw shaft; And a detecting unit for recognizing a train entering and passing signal to the crossing and controlling means for controlling the driving motor by a signal sensed by the detecting unit. The method of claim 1, The rotating shaft and the main body for controlling the speed of the rising and falling between the blocking, the sensing targets are installed on the rotating shaft to sense the position of the rising and falling between the blocking, and the main body adjacent to the sense targets Crossing automatic blocking device characterized in that it further comprises a position control means consisting of a falling deceleration sensor, a falling stop sensor, and a rising deceleration sensor and a rising stop sensor. The method of claim 1, The jack screw unit is a housing installed in the main body, a worm wheel rotatably installed in the housing and screwed with the jack screw shaft to lift the jack screw shaft, and is engaged with the worm wheel and the forward and reverse rotation by the motor of the drive unit Crossing automatic blocking device, characterized in that it is provided with a worm having a drive shaft. The method of claim 1, The inter-blocking block automatic crossing device, characterized in that provided with a blocking member having a hollow, and an insulating member connecting the blocking member. The method of claim 1, The control means automatically detects a power failure state in the event of a power failure, characterized in that it further comprises an uninterruptible power supply means for supplying the motor by converting the power of the battery into alternating current. The method of claim 1, Crossing vehicle blocking device further comprises a stopping means for limiting the rotational position of the rotary shaft in order to limit the lowering position between the rotation shaft and the main body.

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