JP5614747B1 - Safety shut-off device - Google Patents

Abstract

[PROBLEMS] To avoid breakage of a barrier and easily and safely escape even when trapped in a railroad crossing, without causing any danger to the surroundings, and to easily prepare for existing railroad crossing equipment. Provided is a safety shut-off device capable of A crossing barrier on a base end side of a railroad crossing barrier and a blocking rod 8 on a distal end side are linearly connected to each other, and when the cutting rod on the distal end side is pressed by receiving an external force, the upper oblique direction It has a restricting portion 303 that prevents breakage of the blocking rod and ensures safety during bending, and restricts rotation in one direction during bending. [Selection] Figure 1

Description

  The present invention relates to a crossing barrier for a level crossing barrier, and more particularly to a crossing of a crossing barrier that prevents a railroad crossing bar from being damaged due to contact with an automobile or the like and makes it safe and easy for a person or vehicle to escape from the level crossing. It is about the technique of the cocoon.

  Conventionally, a railroad crossing barrier is provided at a railroad crossing to prevent a person, a car, or the like from entering the railroad crossing. A railroad crossing barrier has a barrier for blocking traffic of people, automobiles, etc., and the barrier is a hook-like member having an outer diameter of about 30 to 60 mm such as bamboo or fiber reinforced plastic (FRP). It is rotated by the machine body and descends to block traffic to the level crossing. When a car or a person is trapped inside the railroad crossing, the barrier rod breaks when subjected to a bending load that causes the vehicle to collide. For this reason, the barrier rod is broken by being collided with a car that forcibly enters the railroad crossing immediately before descending, and the barrier rod is frequently broken. Railway operators had to replace broken breakers quickly, and the burden of replacement was heavy. In addition, there is a problem that the diamond is disturbed by the replacement work of the broken barrier.

  Therefore, there are some that avoid breakage by using an elastic material for the barrier. However, when the barrier rod is pushed by the automobile, the barrier rod may bend greatly in the traveling direction of the vehicle and hit a nearby person, etc. There is a problem of taking measures to avoid the occurrence of danger.

Also, if a person is trapped in a railroad crossing, no matter how much they try to break the barrier, it is difficult to push or pull horizontally by weak women or elderly people. It is not easy, and even when it is lifted, it is quite heavy depending on the position of the barrier, so that escape may be delayed and dangerous. As a countermeasure against such safety, when an automobile gets stuck in a railroad crossing, if it is pushed slowly, it will be changed to an advanced circuit breaker equipped with a `` breaking breakage prevention device '' that raises the breaking fence diagonally. As a more drastic measure, the development of three-dimensional intersections and three-dimensional crossing facilities such as pedestrians is being promoted. However, since all of these measures are costly, it is not possible to take all of the level crossings over 30,000 nationwide.

  Various techniques have been proposed in the past to solve these problems. For example, in a crossing bar breakage breakage preventing coupling device that can be bent and restored, it has been proposed to be able to reliably return to its original position after being bent by being pressed by an external force (see Patent Document 1), which is a known technique. ing. Such a technique is such that a connecting main body and a connecting sub body are connected to each other by a coil spring and a pulling rope so as to be able to be bent and restored to form a connecting device main body, and the lower side of the connecting main body is connected to the lower side of the connecting main body. An anti-bending part projecting to the sub body side is provided, an obtuse V-shaped guide recess along the axial direction is formed on the upper surface, and two inclined surfaces are formed below the connection main body side of the connection sub body. An obtuse-angled mountain-shaped guide convex portion that fits into the guide concave portion at the time of return is formed.

  However, this crossing breakage breakage prevention device changes the bending direction of the breakage bar according to the external force. When the car tries to evacuate from the railroad crossing, the barrier rod will bend greatly toward the front of the vehicle, so if there are pedestrians around the railroad crossing, the tip of the barrier rod may hit the pedestrian, It is a safety issue.

  In addition, it is proposed that a bending rod is bent when subjected to a bending load, and the shape is restored when the bending load is released, and a barrier rod having high bending durability is provided (see Patent Document 2). It has become. Such a barrier rod is provided to block traffic, and includes a hollow cylindrical rod-shaped member. The hook-shaped member is made of a resin material having elasticity or flexibility, and a plurality of slits are formed in a longitudinal direction in a cylindrical region having a predetermined length in the intermediate portion. Thereby, since the hook-shaped member is divided | segmented into plurality by the slit of the longitudinal direction in the cylindrical area | region, the interruption | blocking rod is bent so that it may bend when bent under a bending load.

  However, since the crossing breakage breakage prevention device utilizes a change in the shape of the resin, it does not deform unless an external force of a certain level or more is applied. For this reason, bending often occurs abruptly. In addition, since it bends in the opposite direction to the external force, the barrier rod bends in the horizontal direction on the ground, which may hit a surrounding pedestrian or the like, which is a safety problem. Therefore, none of the techniques described in the above literatures have solved the problem.

JP-A-7-329787 JP 2012-188032 A

Therefore, in view of the above problems, the inventor of the present application avoids breakage of the barrier and can easily escape even when trapped in the railroad crossing, without causing any danger to the surroundings, We decided to provide a safety gate device that can be easily installed in existing railroad crossing equipment.

When the safety fence crossing breaker according to the present invention is connected linearly to the safety fence on the base end side and the safety fence on the distal end side, and when the safety fence on the distal end side is pressed by receiving an external force A safety barrier device that bends and then returns to its original position, which is coupled to a bent portion that is bent with the proximal end side as an axis, a support portion that supports the bent portion, and a barrier rod on the distal end side A distal end coupling portion and a proximal end coupling portion coupled to the proximal end side blocking rod, and the proximal coupling portion and the proximal coupling portion are coupled to form a proximal end blocking rod. A distal end side blocking rod is linearly connected, a proximal end side portion of the bent portion is rotatably fixed to a distal end side portion of the support portion, and the bent portion has a roller portion, the roller A part of the roller is a roller that makes contact with the support part and has the longitudinal direction of the bent part as a rotation axis. A part of the roller is fixed to the coupling part, and a part of the roller is in contact with the surface of the support part. When the bending part rotates, the roller rotates in a rotation direction corresponding to the amount of slip with the support part. The elastic body is fixed to one end of the elastic body, the other end of the elastic body is fixed to the support section, and the support section and the bent section are linear. The elastic body has the smallest tension, and the support portion has a restricting portion for restricting rotation of the bent portion in one direction.

  Further, the present invention employs a means that is attached to a railroad crossing barrier so that the bent portion is bent obliquely upward.

  In the present invention, there is a concave portion on the distal end side of the support portion, and the bent portion is located at a position corresponding to the concave portion when the support portion and the bent portion are linear. There is a convex portion that is movable in the direction of the rotation axis, and the convex portion is biased by the elastic body in the concave portion direction.

  Further, according to the present invention, the bent portion has a roller portion, a part of the roller portion contacts the support portion, the roller portion rotates when the bent portion rotates, and the tip coupling portion The means is to rotate in conjunction with the roller section.

  According to the safety barrier device according to the present invention, an automobile that forcibly passes through a railroad crossing or an emergency evacuation from within a railroad crossing without impairing the original function of preventing entry into the railroad crossing from outside the railroad crossing, etc. As a result, breakage of the breaker can be prevented, so that the maintainability of the breaker is greatly improved. In addition, since the car that is retracted from the crossing can be removed from the railroad crossing without damaging the vehicle, the car is removed only by slightly contacting the crossing bar. Also, even if a person trapped in a railroad crossing is a weak woman or a weak elderly person, it is possible to safely escape without requiring a large force, and the barrier rod bends diagonally upward. Therefore, there is little risk of hitting other cars and people near the railroad crossing and the safety is improved.

In addition, according to the safety barrier fence device according to the present invention, since it is a configuration for a barrier fence used for an existing level crossing, it is excellent in that it can reduce the cost for capital investment and reduce the construction time required for installation. Demonstrate the effect.

It is a perspective view of the safety barrier device according to the present invention. It is a 2nd page figure of the safety barrier device concerning the present invention. It is a fragmentary sectional view of the safety barrier device according to the present invention. It is a figure of the Example of the safety breaker apparatus which concerns on this invention. It is a figure of the Example of the safety breaker apparatus which concerns on this invention. It is a figure of the other Example of the safety barrier device which concerns on this invention.

The safety barrier rod device according to the present invention linearly connects the barrier rod on the base end side of the railroad crossing barrier and the barrier rod on the distal end side, and the barrier rod on the distal end side is pressed by receiving an external force. The greatest feature is that it is possible to prevent breakage of the blocking rod and ensure safety when bent by bending in an oblique direction and then returning to the original position. Embodiments will be described below with reference to the drawings. It should be noted that the overall shape and the shape of each part of the breaking / breaking preventing coupling device shown in the present embodiment are not limited to the embodiments described below, but are within the scope of the technical idea of the present invention, that is, the same. It can change within the range of the shape and dimension which can exhibit an effect.

The present invention will be described with reference to FIGS.
Fig.1 (a) shows the whole perspective view of this invention, FIG.1 (b) is the Example which covered a part of this invention with the cover. FIG. 2A is a front view mainly showing the bent portion 2 and the support portion 3 of the present invention. FIG. 2B is a side view mainly showing the bent portion 2 and the support portion 3 of the present invention.
In this embodiment, the side closer to the breaker of the breaker extending from the breaker body is referred to as the base end side, and the side farther from the breaker is referred to as the distal end side. Further, in the description, “up” and “down” indicate “up” and “down” in a state in which the breaker of the breaker is lowered unless otherwise specified.
The safety shut-off device 1 mainly includes a bent portion 2, a support portion 3, a spring 4, a distal end coupling portion 5, and a proximal end coupling portion 6. Each part may be a metal, resin, fiber reinforced plastic (FRP), carbon fiber reinforced plastic (CFRP), or the like. If it is a metal, aluminum, titanium, magnesium alloy, etc. which are lightweight and rigid are suitable.

  The safety interrupting device 1 is connected to a base end side interrupting rod 10 extending from the circuit breaker main body 11 by a base end coupling portion 6, and is connected by a distal end side side interrupting rod 8 and a distal end coupling portion 5, and is supported by an external force. On the other hand, the bent portion 2 is bent, and the distal end side blocking rod 8 is flipped up obliquely upward.

  The bending portion 2 performs a bending operation by rotating with respect to the support portion 3. The rotating shaft 203 is rotatably fixed to the support portion 3. The rotating shaft 203 is on the base side of the bent portion 2. A spring fixing portion 204 is provided at the base side end of the bent portion 2 and fixes one of the springs 4. The distal end coupling portion 5 is inserted on the distal end side of the bent portion 2 and is fixed by a bolt or the like through the distal end coupling portion fixing hole 206 of the bent portion 2. The bent portion auxiliary plate 205 is an auxiliary plate for smoothly rotating the bent portion 2 and the support portion 3. In this structure, the support portion 3 is sandwiched between the main body of the bent portion 2 and the bent portion auxiliary plate 205. The positioning unit 9 aligns the bent portion 2 and the support portion 3 in a linear state. In a straight line state, the convex portion 902 of the bent portion 2 and the concave portion 304 of the support portion 3 are fitted to prevent bending by a weak external force such as wind.

  The support part 3 is a part that supports the rotation of the bent part 2. The spring fixing portion 301 is a portion that fixes the end of the spring 4 to the support portion 3. The spring 4 is fixed by the spring fixing portion 204 of the bent portion 2 and the spring fixing portion 301 of the support portion 3, and a predetermined tension is always applied between the bent portion 2 and the support portion 3. Since the spring fixing portion 204, the spring fixing portion 301, and the rotating shaft 203 are on the same line when the bent portion 2 and the support portion 3 are in a straight line, the most when the bent portion 2 and the support portion 3 are in a straight line. stable. When the bent portion 2 is rotated and the bent portion 2 and the support portion 3 are in a bent state, the spring 4 extends, increases the tension, and tries to return to the original linear state. The rotation holding portion 302 guides the end portion of the bending portion 2 when the bending portion 2 rotates, and helps smooth rotation. The rotation restricting portion 303 restricts the rotation of the bent portion 2 only in the upward direction. When the bent portion 2 attempts to rotate downward with an unexpected external force, the side surface of the bent portion 2 hits the rotation restricting portion 303. Regulate rotation.

  The proximal end coupling portion 6 is configured to couple the proximal end side blocking rod 10 and the support portion 3 and is fixed to the proximal end coupling portion fixing hole 305 of the support portion 3 with a bolt. Three barrier rod mounting brackets 602 are fixed via the bracket fixing portion 601, and the base end side barrier rod 10 is fixed from the outside by the barrier rod mounting bracket 602.

The distal end coupling portion 5 is for coupling the distal end side blocking rod 8 and the bent portion 2 and is fixed to the distal end coupling portion fixing hole 206 of the bent portion 2 with a bolt. Similarly, the front end side blocking rod 8 is fixed with a bolt.
The cover 7 protects the vicinity of the spring 4 and prevents entry of dust and inadvertent pinching of fingers.

Next, the operation of implementation will be described with reference to FIGS. FIG. 4 is a diagram showing the relationship between the bent portion 2, the support portion 3, and the spring 4 when the bent portion 2 is bent. FIG. 5A is an implementation diagram when the present invention is installed at a railroad crossing. FIG. 5 (b) is an embodiment of the circuit breaker and the present invention.
When an external force is applied to the distal end side blocking bar 8 by an automobile or the like that is about to escape from the railroad crossing, a similar force is also applied to the connected bent portion 2. The bent portion 2 rotates counterclockwise on the paper surface with the rotation shaft 203 as an axis (FIG. 4). Then, since the spring fixing portion 204 moves in the upper right direction on the paper surface, the spring 4 applies a force for returning the rotation due to the external force to the bent portion 2. Therefore, when the external force disappears, the bent portion 2 returns to a linear position with respect to the support portion 3 due to the restoring force of the spring 4. At that time, since there is the rotation restricting portion 303, it does not rotate in the opposite direction due to the reaction.

  FIG. 5B shows a state where the safety barrier device 1 is attached to the circuit breaker. The safety breaker device 1 is fixed to the distal end of the base end side breaker rod 10 extending from the breaker body 11. Fixing is performed by the barrier rod mounting bracket 602 of the proximal end coupling portion 6. The bending part 2 is fixed so that the bending direction is obliquely upward, for example, 45 degrees (C direction). A distal end side blocking rod 8 is attached to the distal end of the safety blocking rod apparatus 1. The distal end side blocking rod 8 is attached via the distal end coupling portion 5. When the safety interrupting device 1 is heavy, the wire ring 14 is installed in the safety interrupting device 1, the wire 15 from the circuit breaker body 11 is fixed to the wire ring 14, and the safety interrupting device 1 is interrupted. It is good also as a form pulled by the machine main body 11. The wire 15 is automatically wound around the breaker body 11 when the breaker is pulled up.

  The reason why the bending portion 2 is fixed so that the bending direction is obliquely upward, for example, 45 degrees, is to always bend the distal end side blocking rod 8 upward against an external force. If the bending direction of the bent portion 2 is made horizontal, the bent portion 2 is bent by an external force, but the distal end side blocking rod 8 rotates horizontally on the ground around the rotation axis 203 of the bent portion 2. Thus, if there is a pedestrian near the railroad crossing, it will affect a wide range of pedestrians. If the bending direction of the bent portion 2 is made vertical, it cannot cope with external force and the vehicle cannot escape. By making the bending direction of the bent portion 2 obliquely upward, the distal end side blocking rod 8 gradually moves upward about the rotation shaft 203 of the bent portion 2 by an external force. Since the front end side blocking rod 8 moves upward, even if there is a pedestrian in the vicinity, the affected range is limited.

  FIG. 5A shows a state in which a breaker with a safety breaker device is installed at the level crossing. A circuit breaker with a safety barrier device is installed on both sides of the railroad crossing, and the side from which the car escapes can be flipped up. The direction in which the front end side blocking bar 8 bends is obliquely upward in the direction in which the front end side blocking bar 8 moves away from the railroad crossing in both the upper and lower blockers on the paper (arrow c). When a car that has entered from the lower side of the page tries to escape from the railroad crossing, the car travels in the B1 direction because it is on the left. When the automobile comes into contact with the distal end side blocking rod 8 and starts to push the distal end side blocking rod 8, the bending of the bent portion 2 is restricted obliquely upward. Rotate while moving upward (A1). Therefore, it is close to the image of exiting from the crossing while lifting the barrier rod, and the influence on others due to the bending of the distal-end-side barrier rod 8 is small. For example, even when another vehicle is present at a relatively close position in front, it is possible to escape from the crossing without the tip end side blocking rod 8 coming into contact with the other vehicle.

Thus, according to the present invention, the distal end side blocking rod 8 is bent by an external force, so that it is not easily broken by contact with an automobile or the like. Further, since the bending direction is limited to an obliquely upward direction, it can be said that the degree of contact with the surroundings is small and the safety is excellent as compared with the case where the bending direction is horizontal with respect to the ground.

Another embodiment will be described with reference to FIG.
FIG. 3A is a cross-sectional view illustrating the positioning portion 9. FIG. 3B is a partial front view of the support portion 3 for explaining the positioning portion 9.
Although the breaking of the barrier rod can be avoided by bending the barrier rod according to the external force of an automobile or the like, it is usually required to be linear without bending. However, it is conceivable that the front end side blocking rod 8 is bent by the wind force when the blocking rod is pulled up when the train does not come, which is a safety problem. Further, when lowering the blocking rod, the tip side blocking rod 8 may be bent by the lowered reaction, which is a safety problem.
Therefore, for an external force below a certain level, an operation that does not bend is necessary.

  The positioning portion 9 is for stabilizing the bent portion 2 and the support portion 3 in a straight line. A hole penetrating the bent portion 2 is provided, and a spring 901 biases the convex portion 902 so as to contact the support portion 3. The urging force is adjusted by the bolt of the positioning portion 9. There is a recess 304 on the side where the support portion 3 abuts. When the bent part 2 and the support part 3 are linear, the convex part 902 and the concave part abut. In other words, the convex portion 902 of the bent portion 2 can move in the direction of the rotation axis of the bent portion 2 with respect to the concave portion 304 of the support portion 3. If the bent portion 2 is to be rotated from the state in which the convex portion 902 and the concave portion 304 are in contact with each other, a force that resists the force of the spring 901 is required. With force, it will start rotating for the first time.

Further, since the force for starting the rotation depends on the force of the spring 901, the force for pressing the spring 901 can be arbitrarily adjusted by the bolt of the positioning portion 9. Therefore, the shape of the front end side blocking rod 8 and the installation environment Can be easily accommodated.
According to the present invention, the bending portion 2 is not bent by a relatively small force other than an external force such as a car, so that the safety of the blocking rod is improved.

Another embodiment will be described with reference to FIG. Parts similar to those in the first embodiment are omitted.
FIG. 6A is a perspective view of another embodiment. (B) is a perspective view when the bent part 2 is bent. (C) is sectional drawing explaining the roller 16 structure. (D) is the implementation figure at the time of contacting with a motor vehicle.
By bending the blocking rod diagonally upward, the influence on the surroundings when the blocking rod is raised can be reduced. However, the carcass will be lifted up with a slight rubbing against the car. Therefore, a method for further reducing the amount of rubbing at the time of sloping upward will be described.

  The roller 16 is a roller that is attached to the bent portion 2 and has the longitudinal direction of the bent portion 2 as a rotation axis. The shaft of the roller 16 is fixed as a shaft 17 to the tip coupling portion 19. A part of the roller 16 is in contact with the surface of the support portion 3 and rotates according to the amount of slip with the support portion 3 when the bent portion 2 rotates. The roller contact portion 306 corresponding to the roller 16 of the support portion 3 has a rough surface and is processed so as to be less slippery with the roller 16. The rotation assisting portion 18 is an assisting portion for smoothly rotating the tip coupling portion 19 when it rotates according to the roller 16. Lubricating oil may be included in the portion that contacts the tip coupling portion 19 at the tip of the rotation assisting portion 18 or may have a bearing structure. The distal end coupling portion 19 and the distal end side blocking rod 8 are fixed with bolts or the like.

When the bending portion 2 is rotated by an external force, the roller 16 is rotated by sliding with the support portion 3 (arrow C in FIG. 6B). The rotation is transmitted to the tip coupling portion 19 via the shaft 17 (arrow D).
The relationship with the automobile 20 will be described with reference to FIG. The automobile 20 comes into contact with the front end side blocking bar 8 and applies a force A to the front end side blocking bar 8. The distal end side blocking rod 8 rotates in the direction of arrow B about the rotation axis 203 of the bent portion 2 via the distal end coupling portion 19. Then, the roller 16 rotates in the direction of arrow C, and at the same time, the tip coupling portion 19 also rotates in the direction of arrow D. The rotation D is a force that lifts the distal end side blocking rod 8 upward relative to the automobile 20 that is in contact with the distal end side blocking rod 8. Therefore, the amount of the front end side blocking bar 8 that rubs the surface of the automobile 20 is reduced, and the front end side blocking bar 8 can move more smoothly.
Thus, since the front end side blocking rod 8 moves while rotating in a direction that reduces the amount of rubbing with the automobile 20, the risk of damage to the automobile 20 can be reduced.

  The safety barrier device according to the present invention is considered to have great industrial applicability in terms of maintenance and management of a crossing barrier and ensuring safety of a crossing user.

DESCRIPTION OF SYMBOLS 1 Safety shut-off device 2 Bending part 3 Support part 4 Spring 5 Tip joint part 6 Base end joint part 7 Cover 8 Tip part side shut bar 9 Positioning part 10 Base end side shut bar 11 Breaker body 12 Line 13 Level crossing area 14 Wire ring 15 Wire 16 Roller 17 Shaft 18 Rotation assisting portion 19 Tip coupling portion 20 Automobile 203 Rotating shaft 204 Spring fixing portion 205 Bending portion auxiliary plate 206 Tip coupling portion fixing hole 301 Spring fixing portion 302 Rotation holding portion 303 Rotation restricting portion 304 Concave portion 305 Base end coupling portion fixing hole 306 Roller contact portion 601 Bracket fixing portion 602 Barrier mounting bracket 901 Spring 902 Convex portion

Claims (3)

The crossing barrier on the base end side of the railroad crossing barrier is connected linearly with the blocking rod on the distal end side, bent when receiving the external force and the blocking rod on the distal end side is pressed, and then returned to its original position. A safety shut-off device that returns,
A bent portion that bends about the base end side as an axis;
A support portion for supporting the bent portion;
A tip coupling portion coupled to the tip side blocking bar;
Having a base end coupling portion that couples to the base side shield bar,
By connecting the distal end coupling portion and the proximal end coupling portion, the proximal end side blocking rod and the distal end side blocking rod are linearly connected,
A base end side portion of the bent portion is rotatably fixed to a distal end side portion of the support portion,
The bent portion has a roller portion, and a part of the roller portion contacts the support portion,
It is a roller having the longitudinal direction of the bent portion as a rotation axis, and the shaft of the roller is fixed to the tip coupling portion as a shaft, and a part of the roller is in contact with the surface of the support portion, and when the bent portion rotates Rotate in the direction of rotation according to the amount of slip with the support,
The tip coupling portion rotates in conjunction with the roller portion,
One end of an elastic body is fixed to the bent portion,
The other end of the elastic body is fixed to the support part,
When the support part and the bent part are linear, the tension of the elastic body is the smallest,
The safety interrupter device according to claim 1, wherein the support portion includes a restricting portion that restricts rotation of the bent portion in one direction. The safety barrier device according to claim 1, wherein the safety barrier device is attached to a railroad crossing barrier so that the bent portion is bent obliquely upward. There is a concave portion on the tip side of the support portion, and the bent portion moves in the direction of the rotation axis of the bent portion to a position corresponding to the concave portion when the support portion and the bent portion are linear. The safety interrupter device according to claim 1, wherein there is a possible convex portion, and the convex portion is urged toward the concave portion by an elastic body.