JP2012245909A - Crossing gate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crossing gate that easily holds a crossing bar at a raised position and prevents human error.SOLUTION: A body cover constituting the crossing gate is openably attached to a body case 11. An arm part 2 supports a crossing bar 3, has a first pin insertion hole 21, and is rotatably attached to the outside of the body case 11. A holding bracket 6 has a second pin insertion hole 61 and is disposed on the outside of the body case 11. The second pin insertion hole 61 overlaps the first pin insertion hole 21 in the raised position of the arm part 2. A hold pin is attached to a connection string fixed on the inside of the body case 11 or the body cover, penetrates through the overlapped first and second pin insertion holes 21 and 61 to regulate the rotation R1 of the arm part 2 and the crossing bar.

Description

  The present invention relates to a circuit breaker, and more particularly, to a railroad electrical level crossing circuit breaker and a circuit breaker used for a gate such as a toll collection point in a parking lot or a toll road.

  As disclosed in Patent Documents 1 to 3, this type of breaker supports the breaker with a brace part, and raises and lowers the breaker by rotating the armor part with a rotation drive mechanism. .

  By the way, in this kind of breaker maintenance and inspection work, there is a step of holding the breaker in the raised position with the power supply of the rotary drive mechanism turned off. Conventionally, in order to hold the breaker in the raised position, for example, a method in which a wire rope is hooked on a weight lever provided at the base of the breaker and is tied to a pedestal part of the breaker. In addition, in a waitress breaker without a weight lever, a method is adopted in which a metal fitting is attached to the armrest part in advance and a wire rope is hooked on the metal fitting and tied to a handle of the breaker.

  However, in the conventional method described above, the manufacturing cost is increased to the extent that metal fittings and handles for hooking the wire rope to each part of the circuit breaker are required. Moreover, since a tool is required to bind the wire rope, work efficiency is reduced.

  Furthermore, maintenance and inspection work for the circuit breaker is often performed at night so as not to obstruct traffic. As a result, a human error such as forgetting to untie the tied wire rope after the maintenance and inspection work occurs due to poor visibility and a reduction in the attention of workers. When such a human error occurs, the shut-off can be operated in a state where it is held in the raised position, resulting in a serious accident.

Japanese Patent No. 3434054 JP 09-188257 A JP 2001-90033 A

The subject of this invention is providing the circuit breaker which can hold | maintain a circuit breaker easily in a raise position.
Another object of the present invention is to provide a circuit breaker that can prevent human error.

  In order to solve the above-described problem, a circuit breaker according to the present invention includes a main body case, a main body cover, a brace part, a holding metal fitting, and a holding pin. The main body case has a rotation drive mechanism therein, and the main body cover is attached to the main body case so as to be openable and closable. The arm metal part supports the shield, has a first pin insertion hole, is rotatably attached to the outside of the main body case, and is rotationally driven by the rotational driving mechanism.

  The holding metal fitting has a second pin insertion hole, and is provided outside the main body case. The second pin insertion hole is located at a position where the arm metal part is raised, and the first pin insertion hole It is provided at a position overlapping the hole.

  The holding pin is attached to a connecting string that is stopped inside the main body case or the main body cover and led out to the outside, and the first pin insertion hole and the second pin insertion hole in the overlapping state And the rotation of the armrest part is restricted.

  As described above, the circuit breaker according to the present invention has the armrest portion rotatably attached to the outside of the main body case. It can be used as a gate breaker for machines, parking lots and toll road toll collection.

  The arm metal part and the holding metal fitting are located outside the main body case, and the first pin insertion hole provided in the arm metal part and the second pin insertion hole provided in the holding metal metal Are overlapped in a state where the arm metal part is rotationally driven to the raised position. The holding pin is inserted through the first pin insertion hole and the second pin insertion hole in an overlapped state, and restricts the rotation of the armrest portion. According to this configuration, the armor part can be fixed at the raised position simply by inserting the holding pin into the first and second pin insertion holes. It can be easily held in the raised position.

  Since the main body cover is attached to the main body case so as to be openable and closable, the holding pins can be taken out from the inner side of the main body case or the main body cover and returned to the inner side of the main body case or the main body cover after use. Accordingly, the shut-off can be easily held at the raised position without using tools.

  Since the holding pin is attached to the connecting string that is stopped inside the main body case or the main body cover and led out to the outside, the main body case or the main body cover is inserted into the first and second pin insertion holes. The connecting string drawn from the inside becomes an obstacle, and the operation of closing the main body cover illegally is restricted and opened. In other words, the main body cover cannot be closed unless the holding pins are returned to the inside of the main body case or the main body cover. Therefore, in the present invention, unlike the prior art, it is possible to prevent a human error in which the blocking canister is left in the raised position.

As described above, according to the present invention, the following effects can be obtained.
(1) It is possible to provide a breaker that can easily hold the breaker in the raised position.
(2) A circuit breaker that can prevent human error can be provided.

  Other objects, configurations and advantages of the present invention will be described in more detail with reference to the accompanying drawings. The accompanying drawings are merely examples.

It is a front view of the circuit breaker concerning one embodiment of the present invention. It is a left view of the circuit breaker shown in FIG. It is a figure which expands and shows a part of circuit breaker of FIG. It is a left view which shows the state which opened the main body cover of the circuit breaker of FIG. It is a left view which shows the usage method of the circuit breaker which concerns on one Embodiment of this invention. It is a front view which abbreviate | omits and shows a part about the state after the state shown in FIG. FIG. 8 is a partially broken sectional view showing a part of the state after the state shown in FIG. 7 in an enlarged manner. FIG. 8 is a partially broken sectional view showing a part of the state after the state shown in FIG. 7 in an enlarged manner. It is a front view which simplifies and shows the inside about the main body case of the circuit breaker which concerns on another embodiment of this invention.

  1 to 9, the same reference numerals indicate the same or corresponding parts. First, FIG. 1 thru | or FIG. 4 is embodiment at the time of being used as an electric railroad crossing breaker of a railroad, Comprising: A breaker contains the main-body part 1, the armrest part 2, and the barrier 3.

  The main body 1 has a main body case 11 and a main body cover 12. The main body case 11 has an internal space 13 and an opening 14 that opens into the internal space 13. A known rotation drive mechanism (not shown) is provided inside the main body case 11, and the rotation output of the rotation drive mechanism is taken out of the main body case 11 through the output shaft 4. The output shaft 4 protrudes toward the front surface 17 of the main body case 11 and is rotationally driven by a rotational drive mechanism.

  The main body cover 12 is attached to the opening 14 so as to be openable and closable on the back side of the main body 1 using a hinge 15, a clasp 16, and the like.

  The arm metal part 2 has a housing 20 and a first pin insertion hole 21, and is rotatably attached to the outside of the main body case 11. If it demonstrates in detail, the armrest part 2 will support the blocking can 3 and is attached to the output shaft 4. As shown in FIG. The arm metal part 2 is rotationally driven by a rotational drive mechanism via the output shaft 4 and is raised and lowered according to the rotation directions R1 and R2 of the output shaft 4. R1 indicated by an arrow is a direction in which the shut-off can 3 attached to the brace part 2 is raised, and R2 is a direction in which it is lowered. The first pin insertion hole 21 penetrates the housing 20 in the thickness direction (T) of the housing 20 or the direction (T) approaching the front surface 17.

  The main body case 11 is provided with a holding metal fitting 6 on the upper side of the front surface 17 facing the arm metal fitting 2. The holding metal fitting 6 has a second pin insertion hole 61. The second pin insertion hole 61 overlaps the first pin insertion hole 21 when viewed in the penetration direction T when the armrest 2 rotated R1 by the output shaft 4 is in the raised position (P1). The second pin insertion hole 61 in FIG. 3 is a through hole, but may be a bottomed hole (or a recess).

  The holding pin 5 is attached to a connecting string 51 that is stopped inside the main body cover 12 and led out to the outside. 4 is attached to a support fitting whose end or intermediate portion is coupled to the inside of the main body cover 12, and is stored in the internal space 13 in an attached state. The “connecting string” in the present specification is a string, a rope, a rope, a wire, or a chain made of natural fiber, synthetic resin fiber, metal fiber, or metal material. This is a broad term. Of course, the connecting string 51 is intended to prevent the holding pin 5 from falling off or lost, and to prevent the body cover 12 described later from being closed improperly, so that the impact resistance, wear resistance, weather resistance, From the viewpoint of corrosiveness, a chain using a metal material or a wire rope is preferably used. The holding pin 5 restricts the rotation R <b> 1 and R <b> 2 of the arm metal part 2 and the output shaft 4 by being inserted into the overlapping first and second pin insertion holes 21 and 61.

  The shut-off can 3 is connected to the output shaft 4 via the arm metal part 2 by being supported by the arm metal part 2 by tightening and fixing the bolts 22 and nuts 23 while being guided by the housing 20. . The shut-off can 3 is supported by the brace 2 so that the central axis a3 intersects the central axis (rotating axis) a4 of the output shaft 4.

  The shut-off can 3 is raised and lowered according to the rotation directions R1 and R2 of the output shaft 4. The R1 direction is a direction in which the blocking can 3 is raised, and the R2 direction is a direction in which the blocking can 3 is lowered. Since the rotation drive mechanism can arbitrarily control the rotation speed, rotation position, and the like as its essential functions, the lifting / lowering speed, the lifting / lowering operation time, and the stop position of the block 3 that is lifted / lowered by the rotation of the rotation driving mechanism. Can also be controlled arbitrarily.

  By the way, in this type of circuit breaker maintenance and inspection work, it is necessary to raise the armrest part 2 with the power supply of the rotary drive mechanism turned off and to hold the circuit breaker 3 at the raised position (P1).

  As described above, conventionally, in order to hold the breaker in the raised position, for example, a method of hooking a wire rope on a weight lever provided at the base of the breaker and tying it to the base of the breaker is adopted. It has been. In addition, in a waitress breaker without a weight lever, a method is adopted in which a metal fitting is attached to the armrest part in advance and a wire rope is hooked on the metal fitting and tied to a handle of the breaker.

  However, in the conventional method described above, the manufacturing cost is increased to the extent that metal fittings and handles for hooking the wire rope to each part of the circuit breaker are required. Moreover, since a tool is required to bind the wire rope, work efficiency is reduced.

  Furthermore, maintenance and inspection work for the circuit breaker is often performed at night so as not to obstruct traffic. As a result, a human error such as forgetting to untie the tied wire rope after the maintenance and inspection work occurs due to poor visibility and a reduction in the attention of workers. When such a human error occurs, the shut-off can be operated in a state where it is held in the raised position, resulting in a serious accident.

  The circuit breaker according to one embodiment of the present invention can solve the above-described problem by having the configuration described with reference to FIGS. 1 to 4. Next, in the circuit breaker shown in FIGS. 1 to 4, a method for holding the circuit breaker (3) in the raised position (P1) will be specifically described with reference to FIGS.

  First, in the circuit breaker of FIG. 5, with the power supply of the rotary drive mechanism turned off, the armrest part 2 is in the lowered position (P2) and the circuit breaker 3 is in a state parallel to the ground (closed state). It has become. From this closed state, the main body cover 12 is opened and the holding pin 5 is taken out from the main body cover 12, and the connecting string 51 is routed along the outer periphery of the main body case 11 while the main body cover 12 is kept open.

  The process shown in FIG. 6 is a process subsequent to the process shown in FIG. 5, in which the closed shut-off can 3 shown by a broken line is rotated 90 degrees in the ascending direction R1 when the output shaft 4 is rotated from the front. Preferably, it is rotated from the lowered position P2 to the raised position P1 by rotating it by 87 degrees. The arm metal part 2 has the first pin insertion hole 21 overlapped with the second pin insertion hole 61 in the penetrating direction (T) at the raised position P1. In addition, the process (FIG. 6) of rotating the blocking can 3 can also be performed prior to the step of opening the main body cover 12 (FIG. 5).

  The process shown in FIG. 7 is a process after the process shown in FIG. 6, and the first and second pins in the state where the main body cover (12) is opened and the holding pin 5 is overlapped. Insert into the insertion holes 21 and 61.

  FIG. 8 shows a state after the process shown in FIG. 7, and the holding pin 5 is inserted into the first and second pin insertion holes 21 and 61. As a result, the arm metal part 2 is stuck to the holding metal fitting 6 by the holding pin 5, and the arm metal part 2 and the rotations R1 and R2 of the output shaft 4 are restricted. The arm metal part 2 and the rotations R <b> 1 and R <b> 2 of the output shaft 4 are restricted until the holding pin 5 is extracted. In the state shown in FIG. 8, even if the main body cover 12 is to be closed by an external physical action such as wind or vibration, the connecting string 51 drawn on the main body case 11 becomes an obstacle, Regulate unauthorized closing. That is, the main body cover 12 remains open unless the holding pin 5 is pulled out from the first and second pin insertion holes 21 and 61 and returned to a fixed position.

  Further, after the maintenance / inspection work of the circuit breaker is performed in the state shown in FIG. 8, the circuit breaker 3 is lowered by a procedure reverse to the procedure described in FIGS. 5 to 8. Briefly, at the raised position P1, the blocking cane 3 is lifted slightly by hand, the holding pin 5 is pulled out from the first and second pin insertion holes 21, 61, the blocking cane 3 is lowered to the lowered position P2, and is driven to rotate. After confirming that the power supply of the mechanism is turned on, the holding pin 5 is returned to a fixed position in the main body cover 12, and the main body cover 12 is closed.

  As described with reference to FIGS. 1 to 8, the circuit breaker according to the embodiment of the present invention has the armrest portion 2 that is rotationally driven outside the main body case 11. By attaching (installing) the barrier can 3 to 2, it can be used as a railroad crossing barrier.

  The arm metal part 2 and the holding metal fitting 6 are located outside the main body case 11, and the first pin insertion hole 21 and the second pin insertion hole 61 raise the arm metal part 2 to the raised position P1. It overlaps in a state where it is driven to rotate. The holding pin 5 is inserted through the overlapped first and second pin insertion holes 21 and 61 to restrict the rotations R1 and R2 of the armrest portion 2. According to this configuration, the brace part 2 can be fixed at the raised position P1 simply by inserting the holding pin 5 into the first and second pin insertion holes 21 and 61, and thus tools are used. Without interruption, the shut-off can 3 can be easily held at the raised position P1.

  Since the main body cover 12 is attached to the main body case 11 so that it can be opened and closed, the holding pin 5 can be taken out from the inner side of the main body cover 12 and returned to the inner side of the main body cover 12 after use. Therefore, the blocking can 3 can be easily held at the raised position P1 without using tools.

  Since the holding pin 5 is attached to the connecting string 51 that is stopped inside the main body cover 12 and led out to the outside, the main body cover is inserted in the first and second pin insertion holes 21 and 61. The connecting string 51 drawn from the inner side of 12 becomes an obstacle, and the operation of closing the main body cover 12 illegally is restricted. In other words, the main body cover 12 cannot be closed unless the holding pins 5 are returned to the inside of the main body cover 12, and is in an opened state. Accordingly, in the present invention, unlike the prior art, it is possible to prevent a human error in which the blocking can 3 is left in the raised position P1.

  FIG. 9: is a front view which simplifies and shows the inside about the main body case of the circuit breaker which concerns on another embodiment of this invention. In the embodiment of FIG. 9, the holding pin 5 is attached to a connecting string 51 that is stopped inside the main body case 11 and led out to the outside. This configuration can have all of the advantages described with reference to FIGS.

  Although the contents of the present invention have been specifically described above with reference to the preferred embodiments, it is obvious that those skilled in the art can take various modifications based on the basic technical idea and teachings of the present invention. It is. For example, FIG. 1 to FIG. 9 show an embodiment when used for an electric railroad crossing breaker for railways, but the present invention is not limited to this, and is used for gates such as parking lots and toll collection points on toll roads. It can also be applied to an electric circuit breaker.

DESCRIPTION OF SYMBOLS 11 Main body case 12 Main body cover 2 Armrest part 5 Holding pin 51 Connecting string 6 Holding bracket 61 2nd pin insertion hole P1 Ascending position

Claims (1)

A circuit breaker including a main body case, a main body cover, a brace part, a holding metal fitting, and a holding pin,
The main body case has a rotation drive mechanism inside,
The body cover is attached to the body case so as to be openable and closable,
The arm metal part supports the shield, has a first pin insertion hole, is rotatably attached to the outside of the main body case, and is rotationally driven by the rotational drive mechanism. ,
The holding metal fitting has a second pin insertion hole and is provided outside the main body case,
The second pin insertion hole is provided at a position overlapping the first pin insertion hole at the raised position of the armrest part,
The holding pin is attached to a connecting string that is stopped inside the main body case or the main body cover and led out to the outside, and the first pin insertion hole and the second pin insertion hole in the overlapping state Is inserted through and regulates the rotation of the armrest part,
Breaker.

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