JP2004244007A - Brake cylinder cock recurrence prevention device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a brake cylinder cock restoring and forgetting forgetting device which does not forget to return a brake cylinder cock to an original position after inspection.
An openable / closable cover (opening / closing portion 20) for covering a brake cylinder cock 51, and a key 30 for locking the cover (opening / closing portion 20) in a closed state, wherein the cover (opening / closing portion 20) is closed. , The rotation of the brake cylinder cock 51 (cock handle 51b) is always suppressed to the open state, and the brake cylinder cock 51 (cock handle 51b) is opened by the cover (opening / closing section 20) being opened. When the cover (opening / closing section 20) is in a closed state, the key 30 is separable from the cover (opening / closing section 20). When it is in the open state, it is configured that it cannot be separated from the cover (opening / closing section 20).
[Selection diagram] Fig. 1

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake cylinder cock restoring and forgetting device for preventing a brake cylinder cock for shutting off air supply to a brake cylinder of a train from being returned to an original position after inspection.

  2. Description of the Related Art Conventionally, there is known a train brake system that uses air pressure. In the brake system using this air pressure, compressed air supplied from an air compressor is stored in an air reservoir, and air is supplied to a brake cylinder of each vehicle through a direct air pipe by operating a control valve of a driver's cab to apply a brake. That is.

  In such a brake system using air pressure, it may be necessary for a vehicle inspector or the like to temporarily shut off the flow of air to the brake cylinder during train inspection or the like. Therefore, the brake cylinder is provided with a brake cylinder cock, and the air flow can be shut off by tightening the brake cylinder cock.

By the way, if you forget to open (return) the brake cylinder cock again and run the train in the tightened state, the supply of air to the brake cylinder will be obstructed and the brake will not be applied, causing an accident. There was a problem.
Therefore, when an inspection is being performed (that is, when the brake cylinder cock is being tightened), an indication to that effect is posted on the vehicle, and after the inspection is completed, the operator is prompted to open the brake cylinder cock, thereby causing an accident. We are working on prevention. According to this, since the operator who sees the display opens the brake cylinder cock and opens the air flow, the brake can be operated normally.

There is also an air brake device configured so that a brake cylinder cock is not provided between a brake control device and a brake cylinder. Specifically, a pressure detector is disposed upstream of the brake control device (opposite to the brake cylinder) and a shutoff cock is attached, and the detection unit of the pressure detector is connected in series to the control circuit. It is configured. According to this, whether or not the cutoff switch is closed is detected by the pressure detector, and when the cutoff switch is closed, the control circuit can be prevented from being configured, so that occurrence of an accident can be prevented ( For example, see Patent Document 1).
JP-A-6-211126 (pages 2 to 3)

However, the latter device has a problem in that when it is installed in an existing train, it is necessary to remove a brake cylinder cock that is already installed and to provide a new complicated circuit, which is troublesome and costly. .
In addition, the display of the former display is based on complete manual work, and if the operator forgets to display the display, there is no means for displaying that the brake cylinder cock is tightened. As a result, there is a problem in that the train is run with the brake cylinder cock closed, which causes an accident. This problem is likely to occur because the posting of the display is left only to the attention of the worker. Therefore, it has been sought to check whether the opening / closing state of the brake cylinder cock can be urged by means that does not rely solely on the attention of the operator (man-made work).

  The present invention has been made in order to solve the above-described problem, and has a brake cylinder cock relocation forgetting prevention device for reducing an artificial element and not forgetting to return a brake cylinder cock to an original position. The task is to provide.

  The present invention is configured to solve the above problem, and the invention according to claim 1 includes an openable / closable cover that covers a cock handle of a brake cylinder cock, and a key that locks the cover in a closed state. With the cover in the closed state, the cock handle is always restrained from turning to the open state, and when the cover is in the open state, the cock handle becomes rotatable until it reaches the tightening position, The key is detachable from the cover when the cover is in the closed state, but is inseparable from the cover when the cover is in the open state.

  According to the first aspect of the invention, when the cover is in the closed state, the rotation of the cock handle of the brake cylinder cock is suppressed, so that the brake cylinder cock is always open. On the other hand, when the cover is open, the brake cylinder cock can be tightened by freely rotating the cock handle. However, when opening the cover, it is necessary to release the lock by inserting a key. This key cannot be separated from the cover when it is open.For example, if the key is managed in any location and the key is stored in that location, the brake cylinder cock must be open. Indicates that the brake cylinder cock is tightened with the cover open when not stored. Therefore, before running the train, the vehicle inspection / repair staff or the like can confirm that the key is stored, thereby preventing the brake cylinder cock from being relocated.

  In addition, since the cover covers the brake cylinder cock in the closed state, unlike the conventional case where the brake cylinder cock was exposed as it is, the brake cylinder cock is prevented from being tampered with by a third party during the normal time when the cover is closed. Function can also be performed.

  According to a second aspect of the present invention, in the configuration of the brake cylinder cock restoring and forgetting prevention device according to the first aspect, a suppressing portion of the cover that suppresses rotation of the brake cylinder cock can be easily broken. And

  According to the second aspect of the invention, in addition to the function of the first aspect, the restraining portion that suppresses the rotation of the brake cylinder cock can be easily broken. Therefore, in an emergency or the like, the brake cylinder cock can be rotated without the key by damaging the suppressing portion.

  According to a third aspect of the present invention, in the configuration of the brake cylinder cock restoring and forgetting device according to the second aspect, the restraining portion is provided with a thin portion along a damaged portion. .

  According to the third aspect of the invention, in addition to the function of the second aspect of the present invention, the thin portion is provided along the portion where the suppressing portion is damaged, so that it is easily broken. Therefore, even if there is no key in an emergency or the like, the suppressing portion is damaged and the brake cylinder cock can be rotated.

  According to a fourth aspect of the present invention, in the configuration of the brake cylinder cock relocation forgetting prevention device according to any one of the first to third aspects, the cover is rotated by inserting the key. A key receiving portion that locks or unlocks the opening and closing operation of the cover; the key receiving portion is configured to rotate in conjunction with the rotation of the key; A locking portion, wherein the locking portion is outside the rotation locus of the clasp when the cover is in the closed state, and is on the rotation locus of the clasp when the cover is in the open state. There is a feature.

  According to the fourth aspect of the invention, in addition to the function of the first aspect of the invention, when the cover is in the closed state, the locking portion is out of the rotation locus of the stopper. , The stopper can rotate freely in conjunction with the rotation of the key. On the other hand, when the cover is in the open state, the locking portion is on the rotation locus of the clasp, so that when the clasp tries to rotate, the rotation is blocked by the locking portion. Therefore, when the cover is in the open state, the stopper and the key whose rotations are interlocked with each other are restricted from rotating, cannot be rotated to the position where the key can be pulled out, and the key cannot be pulled out. .

  According to a fifth aspect of the present invention, in the brake cylinder cock relocation forgetting prevention device according to any one of the first to third aspects, the cover is rotated by inserting the key. A key receiving portion for locking or unlocking the opening and closing operation is provided, and the opening and closing operation of the cover is interlocked with the rotation of the key inserted into the key receiving portion, and the key is inserted into the key receiving portion and rotated in one direction. Then, the cover is rotated to be in an open state, and when the key is rotated from this state to a position inserted into the key receiving portion, the cover is in a closed state.

  According to the fifth aspect of the present invention, in addition to the function of any one of the first to third aspects, when the key is inserted into the key receiving portion and rotated, the cover rotates the key. Opened in conjunction. When the cover is in the open state, the cock handle can rotate freely. Here, when the cock handle is in the open state, the key can be turned, the cover linked to the rotation of the key is closed, and the key can be removed from the key receiving portion. On the other hand, when the cock handle is in the tightened state, if you try to rotate the key to the position where it comes out of the key receiving part, the cover interlocked with the rotation of the key interferes with the cock handle, so the key may be rotated. It cannot be removed from the key receiving unit.

  ADVANTAGE OF THE INVENTION According to the brake cylinder cock restoring and forgetting prevention device of this invention, when driving a train, it can be easily confirmed whether the brake cylinder cock is restoring, and the occurrence of an accident due to the brake cylinder cock restoring and forgetting can be prevented. .

[First Embodiment]
Hereinafter, a first embodiment of a brake cylinder cock restoring and forgetting prevention device (hereinafter, referred to as a “BC cover device”) according to the present invention will be described in detail with reference to the drawings as appropriate.
In the drawings to be referred to, FIG. 1 is a perspective view showing a state in which the BC cover device according to the first embodiment is attached to a brake cylinder cock, wherein FIG. The part is open. FIG. 2 is a side cross-sectional view of the BC cover device in which the opening / closing portion is in an open state, and FIG. 3 is a side cross-sectional view of the BC cover device in which the opening / closing portion is in a closed state.

Hereinafter, the configuration of the BC cover device 1 will be described with reference to FIGS. 1 to 3.
In the description of the present apparatus, as shown in FIG. 1A, the directions of the upper, lower, and side portions are indicated based on a state in which the opening and closing unit 20 is closed.
The BC cover device 1 shown in FIG. 1 is a device that covers a brake cylinder cock 51 composed of a cock body 51a and a cock handle 51b.
The cock main body 51a is attached to a connecting pipe 50 communicating with a brake cylinder (not shown), and can shut off a flow of air to the brake cylinder by tightening a cock handle 51b provided at a lower part of the cock main body 51a. .

  The BC cover device 1 includes a mounting portion 10 attached to the cock main body 51a, an opening / closing portion 20 hinged to a front surface of the mounting portion 10, and a key 30 that can be inserted into and removed from a key receiving portion 21 provided in the opening / closing portion 20. Be composed. The mounting portion 10 and the opening / closing portion 20 correspond to a “cover” in the claims.

  The mounting portion 10 is configured by joining mounting plates 11 and 11 and a plate-shaped member 12 formed in a substantially U-shape in cross section with screws V. The attachment blocks 11, 11 are attached to the cock main body 51a such that the opening faces toward the front.

The plate member 12 is joined to the mounting blocks 11 and 11 so as to cover the front opening portions of the mounting blocks 11 and 11.
The plate-shaped member 12 has a cutout portion 12a and a hole 12b through which the key rotation stopping portion 21C of the key receiving portion 21 can pass.

  The hole 12b is a hole into which a fixing ring 21e described later can be inserted, and is provided at a position corresponding to a key rotation stopper 21C described later.

The opening / closing part 20 is arranged so that the base part 22 is joined to the mounting part 10 via the hinge H, the synthetic resin restraining part 23 is fitted and fixed to the lower end side of the base part 22, and the keyhole 21A is visible in the front. And a key receiving unit 21 to be used.
The base 22 is formed in a rectangular shape having a size such that the cock main body 51a can be covered and concealed from the outside of the train when viewed from the front, and both horizontal edges 22a of the base 22 are perpendicular to the back side. It is bent. The base portion 22 is in contact with the mounting portion 10 only at the two edge portions 22a, 22a, and a cavity is provided between the base portion 22 and the mounting portion 10. The base 22 can rotate about the hinge H as an axis. Here, the state in which the base 22 is in contact with the mounting portion 10 is referred to as a closed state of the opening / closing section 20 (see FIG. 3), and the state in which the base section 22 is not in contact is referred to as an open state of the opening / closing section 20 (see FIG. 2).
The upper part 23a is bifurcated so that the suppressing part 23 can be fitted and fixed to the lower end side of the base part 22. A thin portion 23b is formed near the base 22 near the upper side 23a of the suppressing portion 23.

The key receiving portion 21 includes a main body 21B fixed to the base 22, and a key rotation stopping portion 21C arranged to protrude from the back surface of the base 22 beside the main body 21B.
The main body 21B is fixed to the base 22 by a nut 21c via a clasp 21a and a ring 21b, and is formed so that a keyhole 21A can be seen on the front surface (see FIG. 1A).
The stopper 21a is formed in an elongated shape with a thin metal plate, and can be rotated in accordance with the rotation of the key 30 inserted into the keyhole 21A.

  The key rotation stopping portion 21C is provided with a locking portion 21f and a locking portion 21f in the direction of the fixing ring 21e from the fixing ring 21e fixed to the tip thereof to the rear surface of the base 22 on the cylindrical projection 21d. A biasing spring member 21g is provided. The fixing ring 21e is fixed at a position that is the same distance as the distance from the back surface of the base 22 of the stopper 21a, and has a diameter that does not hinder rotation of the stopper 21a. Further, the locking portion 21f is not fixed like the fixing ring 21e, and can move forward and backward along the protrusion 21d.

  The key 30 is formed so as to engage with the keyhole 21A of the key receiving portion 21, and can be locked or released by opening and closing the opening / closing portion 20 by inserting it into the keyhole 21A and rotating. The key 30 is separable from the key receiving part 21 when the opening / closing part 20 is in the closed state, but is always inseparable when the opening / closing part 20 is in the open state. .

  Next, the operation of the BC cover device 1 according to the present embodiment will be described. FIG. 4 is a plan view of the BC cover device attached to the cock main body, FIG. 5 is a front view for explaining the operation of the stopper of the key receiving portion, and FIG. FIG. 4B is a plan view of the key rotation stopper when in the state, and FIG. 4B is a plan view of the key rotation stopper when the opening / closing part is in the closed state.

  Normally, as shown in FIG. 4, the opening / closing unit 20 is closed and locked. In this case, the cock handle 51b is open, and even if the cock handle 51 is to be rotated (tightened) from this state, the movement is suppressed by the suppressing portion 23 of the opening / closing portion 20 (see FIG. 1A). 51b is not tightened.

Here, the function of the key receiving unit 21 will be described with reference to FIG.
In FIG. 5, when the catch 21a is horizontal, it is in a locked state, and when it is vertically downward, it is in a released state.
Normally, when the opening / closing portion 20 is locked, as shown in FIG. 6B, the locking portion 21f is pushed by the plate-shaped member 12 and a cavity provided between the plate-shaped member 12 and the opening / closing portion 20. The stopper 21a can rotate freely.
On the other hand, when the lock of the opening / closing section 20 is released, the opening / closing section 20 is in an open state. That is, as shown in FIG. 6A, the opening / closing portion 20 is not in contact with the plate member 12, and the locking portion 21f is in contact with the fixing ring 21e by the urging force of the spring member 21g. In this state, the catch 21a cannot be rotated because the locking portion 21f is on the rotation locus of the catch 21a.

  Next, at the time of vehicle inspection or the like, the key 30 can be inserted and rotated to release the lock, and then the opening / closing section 20 can be opened. When the opening / closing section 20 is opened, there is no one that suppresses the rotation of the cock handle 51b, so that the cock handle 51b can be tightened (see FIG. 1B), and various inspections and the like can be performed. At this time, the key 30 remains inserted in the key receiving section 21 of the opening / closing section 20. If the user attempts to rotate the key 30 to a position where the key 30 can be pulled out to remove the key 30, the catch 21a attempts to rotate in accordance with the rotation. However, as described above, the movement is suppressed by the locking portion 21f. It cannot be rotated and the key 30 cannot be removed.

  After the inspection work, the opening and closing unit 20 is closed and then locked. Thereafter, the key 30 is removed and stored in a predetermined place.

  This means that the key 30 is always inserted into the opening / closing section 20 when the opening / closing section 20 is opened. Conversely, the key 30 is separated from the opening / closing section 20 and stored in a predetermined place. If it is, the opening / closing section 20 is always closed and the cock handle 51b is in an open state.

  By the way, even in an emergency, the opening and closing unit 20 cannot be opened without the key 30. Therefore, in an emergency, the opening and closing unit 20 can be damaged from the thin portion 23b of the suppressing unit 23, and the cock handle 51b is rotated. Can be done.

As described above, the following effects can be obtained in the present embodiment.
When the opening / closing section 20 is in the closed state, the brake cylinder cock is always open because the suppressing section 23 suppresses the rotation of the cock handle 51b. On the other hand, when the opening / closing section 20 is in the open state, the cock handle 51b can be freely rotated. However, when opening the opening / closing section 20, it is necessary to insert the key 30 and release the lock. . Since this key is always inseparable from the opening / closing section 20 when it is in the open state, for example, if the key 30 is managed in any place and the key 30 is stored in that place, the cock handle It is possible to indicate that the cock handle 51b is tightened with the opening / closing unit 20 open when the storage is not stored, when the cock handle 51b is not stored. Therefore, before running the train, the vehicle maintenance person or the like confirms that the key 30 is stored, thereby preventing the cock handle 51b from being forgotten to return.

  In addition, when starting operation of the train, the duty of confirming that the key 30 is stored is imposed on the vehicle inspection staff and the key manager, so that the vehicle inspection staff, the key manager, other workers, etc. Since a plurality of persons can confirm the cocked state of the cock handle 51b, it is possible to prevent occurrence of an accident due to forgetting to restore the cock handle 51b.

  Since the opening / closing portion 20 covers the cock handle 51b in the closed state, unlike the related art in which the cock handle 51b is exposed as it is, in a normal state in which the cover is closed, the cock handle 51b is prevented from being tampered with by a third party. Function can also be performed.

  Since the suppressing portion 23 of the opening / closing portion 20 is provided with the thin portion 23b, it can be easily broken. Therefore, in an emergency or the like, by breaking the portion, the cock handle 51b can be rotated without the key 30. In addition, since the suppressing part 23 is configured to be fitted and fixed to the base part 22, even if it is damaged, only the part can be replaced.

As described above, an example of a preferred embodiment of the present invention has been described. However, the present invention is not limited to the above-described embodiment, and a design can be appropriately changed without departing from the gist of the present invention.
For example, in the present embodiment, the cock body 51a is configured to substantially cover the cock body 51a with the mounting portion 10 and the opening / closing portion 20, but the present invention is not limited to this, and the rotation of the cock handle 51b can be suppressed. If it is a structure, it does not necessarily have to be a structure almost covering.

[Second embodiment]
Hereinafter, a second embodiment of a brake cylinder cock restoring and forgetting prevention device (hereinafter, referred to as a “BC cover device”) according to the present invention will be described in detail with reference to the drawings as appropriate.
In the drawings to be referred to, FIG. 7 is a perspective view showing a state in which the BC cover device according to the second embodiment is attached to a brake cylinder cock, (a) a state in which a plate portion of a cover portion is closed, b) shows a state where the plate portion is opened. FIG. 8 is a side sectional view of the BC cover device in which the plate portion is in a closed state.
Note that the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

Hereinafter, the configuration of the BC cover device 2 will be described with reference to FIG.
In the description of the present apparatus, as shown in FIG. 7, the directions of the upper, lower, and side portions are indicated based on a state in which the present apparatus is attached to a brake cylinder cock.
The BC cover device 2 shown in FIG. 7 is a device attached to a brake cylinder cock 51 composed of a cock body 51a and a cock handle 51b.

  As shown in FIG. 7, the BC cover device 2 can be inserted into and removed from a mounting portion 60 attached to the cock main body 51 a, a cover portion 80 fixed to the mounting portion 60, and a key receiving portion 70 provided on the cover portion 80. And a key 90. The cover 80 corresponds to a “cover” in the claims.

The mounting part 60 shown in FIG. 8 is composed of fasteners 61 and 62 attached to the cock main body 51a, and the fastener 61 and the fastener 62 are fastened via the spacer M2 of the fitting M (see FIG. 7).
The fasteners 61 and 62 are formed such that the shape of the inner peripheral surface thereof is substantially hexagonal when combined so as to face each other.

As shown in FIG. 7, the metal fitting M includes a fitting portion M1 having a fitting hole, and a spacer portion M2 extending vertically downward from the fitting portion M1.
When the above-described fasteners 61 and 62 are attached to the cock body 51a, the fitting M is arranged from above the cock body 51a such that the fitting hole of the fitting portion M1 fits around the convex portion 51c of the cock body 51a. After that, the fasteners 61 and 62 are combined with the outer periphery of the hexagonal side portion 52 of the cock body 51a while the spacer M2 is interposed between the fasteners 61 and 62. Then, the fasteners 61 and 62 are fastened with bolts and nuts BN with the spacer M2 interposed therebetween, so that the fasteners 61 and 62 can be attached to the cock body 51a.
By mounting in this manner, the positions of the fasteners 61 and 62 with respect to the cock main body 51a are determined, and the fasteners 61 and 62 can be prevented from coming off the side portions 52.

FIGS. 9A and 9B are front views showing the BC cover device attached to the brake cylinder cock, wherein FIG. 9A shows a state where the plate portion of the cover portion is closed, and FIG. 9B shows a state where the plate portion is opened.
As shown in FIG. 9A, the cover section 80 includes a support section 81 fixed to the fastener 62 and a plate section 82 connected to a key receiving section 70 provided on the support section 81.

  The support portion 81 is fixed to the fastener 62 disposed on the front side so as to protrude downward from the front. At the front lower end portion of the support portion 81, a key receiving portion 70 is fixed with a nut 71 so that a key hole can be seen on the front surface. It is connected with the bolt 72 through the. When the plate portion 82 is in the closed state, the lid 70a is fixed with knurled screws S so that water droplets and the like do not enter the key receiving portion 70 (see FIG. 7A).

  The plate portion 82 is composed of a substantially rectangular main body portion 82a and a suppressing portion 82b projecting upward from the main body portion 82a, and the suppressing portion 82b is generally horizontally positioned so as to cover a part of the cock handle 51b from the front. Mounted in the direction. The plate portion 82 is configured to be able to rotate in conjunction with the rotation of the key 90 inserted into the key receiving portion 70. When the key 90 is rotated in the state of FIG. As shown in FIG. 9B, it faces downward. Here, the state of FIG. 9A in which the plate portion 82 faces horizontally is referred to as a closed state, and the state of FIG. 9B in which the plate portion 82 faces downward is referred to as an open state.

  The key 90 is formed so as to be engaged with a keyhole of the key receiving portion 70, and can be inserted into the keyhole and rotated to lock or unlock the opening / closing operation of the plate portion 82. Normally, the opening and closing operation of the plate portion 82 is locked when the plate portion 82 is in the closed state, and the key 90 can be removed only when the plate portion 82 is locked in the closed state. Has become.

Next, the operation of the BC cover device 1 according to the second embodiment will be described. FIG. 10 is a plan view of the BC cover device attached to the cock main body.
Normally, as shown in FIG. 9A, the plate portion 82 is closed and locked. In this case, the cock handle 51b is open, and even if the cock handle 51b is to be rotated (tightened) in the horizontal direction from this state, the movement is suppressed by the suppression portion 82b of the plate portion 82 (see FIG. 10). 51b is not tightened.

  Next, at the time of vehicle inspection or the like, as shown in FIG. 9B, the key 90 can be inserted and rotated to release the lock, and then the plate portion 82 can be opened (downward from the horizontal). When the plate portion 82 is opened, there is nothing to suppress the rotation of the cock handle 51b, so that the cock handle 51b can be tightened (see FIG. 10), and various inspections and other operations can be performed. At this time, the key 90 remains inserted in the key receiving portion 70 of the plate portion 82. When the cock handle 51b is tightened and the key 90 is rotated to a position where the key 90 is pulled out, the restraining portion 82b of the plate portion 82 that rotates in conjunction with the rotation interferes with the cock handle 51b. The movement is suppressed (see FIG. 9B). Therefore, the key 90 cannot be further rotated, and the key 90 cannot be removed from the key receiving unit 70.

  After the inspection work, the cock handle 51b is returned to the original position, and the plate portion 82 is closed and then locked (see FIG. 9A). Thereafter, the key 90 is pulled out and stored in a predetermined place.

  That is, when the plate portion 82 is opened, the key 90 is always inserted into the key receiving portion 70. In other words, the key 90 is separated from the plate portion 82 and stored in a predetermined place. In some cases, since the plate portion 82 is always closed, this indicates that the cock handle 51b is open.

  By the way, even in an emergency, since it is troublesome that the plate portion 82 cannot be opened without the key 90, a thin portion 82c is formed on the base end portion (near the key receiving portion 70) side of the plate portion 82. It is preferable that the plate 82 can be easily broken.

As described above, the following effects can be obtained in the present embodiment.
When the plate portion 82 is in the closed state, the brake cylinder cock 51 is always in an open state to suppress the rotation of the cock handle 51b. On the other hand, when the plate portion 82 is in the open state, the cock handle 51b can be freely rotated, and the brake cylinder cock 51 is in the closed state.

  In order to open the plate portion 82, it is necessary to insert the key 90 and release the lock, but this key 90 cannot be removed from the key receiving portion 70 when the cock handle 51b is tightened. Therefore, for example, the key 30 is managed in any place, and when the key 90 is stored in that place, it indicates that the cock handle 51b is in an open state. In the state where 82 is open, it can be shown that the cock handle 51b is tightened. Therefore, before running the train, the vehicle maintenance person or the like confirms that the key 90 is stored, so that the cock handle 51b can be prevented from forgetting to return.

  In addition, when starting operation of the train, the duty of confirming that the key 90 is stored is imposed on the vehicle inspection staff and the key manager, so that the vehicle inspection staff, the key manager, other workers, etc. Since a plurality of persons can confirm the cocked state of the cock handle 51b, it is possible to prevent occurrence of an accident due to forgetting to restore the cock handle 51b.

Furthermore, the BC cover device 2 can be easily attached simply by putting the fasteners 61 and 62 on the cock main body 51a and fastening them with the bolts and nuts BN, and the attachment workability is improved.
Further, since the plate portion 82 opens and closes in conjunction with the movement of the key 90, the structure is simple and the usability is improved.

  Since the plate portion 82 covers the cock handle 51b in the closed state, unlike the conventional case in which the cock handle 51b is exposed as it is, when the plate portion 82 is normally closed, the cock handle 51b is closed by a third party. It can also fulfill the function of preventing mischief.

  Since the plate portion 82 is provided with the thin portion 82c, it can be easily broken. Therefore, in an emergency or the like, by breaking the portion, the cock handle 51b can be rotated without the key 90. When the plate portion 82 is damaged, it can be replaced with a new plate portion 82.

As described above, an example of a preferred embodiment of the present invention has been described. However, the present invention is not limited to the above-described embodiment, and a design can be appropriately changed without departing from the gist of the present invention.
In the above-described embodiment, a case has been described in which the present device is applied to the brake cylinder cock 51 in which the cock handle 51b is disposed below the cock main body 51a. However, for example, the cock handle 51b is provided above the cock main body 51a. The present invention can also be applied to the brake cylinder cock 51 provided. In this case, if the plate portion 82 faces upward in an open state in design, the rotation of the plate portion 82 can be facilitated without interference with other components.

  Further, in the above-described embodiment, the plate portion 82 is constituted by the main body portion 82a and the suppressing portion 82b. However, the shape of the plate portion 82 is not limited. For example, as shown in FIG. May be formed such that the entire plate portion 83 covers the cock handle 51b from the front. In this case, the entire plate portion 83 corresponds to the “suppressing portion” in [Claims], and a thin portion 83a that can be damaged starting from the base end of the plate portion 83 in an emergency can be formed. .

  Further, in the above-described embodiment, the shape formed on the inner peripheral surfaces of the fasteners 61 and 62 is substantially hexagonal, but this shape is not limited, and the side portion of the cock main body 51a is not limited. May be formed in an octagonal shape or the like according to the shape of.

It is a perspective view showing the state where the BC cover device concerning this embodiment was attached to the cock main part, (a) is a state where the opening and closing part was closed, and (b) is a state where the opening and closing part was opened. It is a side sectional view of a BC cover device in which an opening and closing part is in an open state. It is a side sectional view of a BC cover device in which an opening and closing part is in a closed state. It is a top view of the BC cover device attached to the cock main part. It is a front view explaining operation of a stopper of a key receiving part. (A) is a plan view of the key rotation stopper when the opening / closing part is in an open state, and (b) is a plan view of the key rotation stopper when the opening / closing part is in a closed state. It is a perspective view showing the state where the BC cover device concerning a 2nd embodiment was attached to a brake cylinder cock, (a) is a state where the plate part of the cover part was closed, and (b) is a state where the plate part was opened. Is shown. It is a side sectional view showing a BC cover device in which a plate part is in a closed state. It is a front view which shows the BC cover apparatus attached to the brake cylinder cock, (a) shows the state which closed the plate part, (b) shows the state which opened the plate part. It is a top view which shows the BC cover apparatus attached to the cock main body. It is a front view showing the BC cover device concerning other embodiments.

Explanation of reference numerals

Reference numerals 1 and 2 BC cover device 10 mounting portion 11 mounting block 12 plate member 20 opening / closing portion 21 key receiving portion 22 base portion 23 suppressing portion 30 key 50 connecting pipe 51 brake cylinder cock 60 mounting portion 70 key receiving portion 80 cover portion 90 key

Claims (5)

An openable / closable cover that covers a cock handle of a brake cylinder cock, and a key that locks the cover in a closed state,
When the cover is in the closed state, the cock handle is always restrained from turning to the open state, and when the cover is in the open state, the cock handle becomes rotatable until it reaches the tightening position,
The key is separable from the cover when the cover is closed, but is inseparable from the cover when the cover is open. apparatus.   The device as set forth in claim 1, wherein a portion of the cover that suppresses rotation of the cock handle can be easily broken.   The device according to claim 2, wherein the restraining portion includes a thin portion along a damaged portion. The cover includes a key receiving unit that locks or releases the opening and closing operation of the cover by inserting and rotating the key,
The key receiving portion has a catch that rotates in conjunction with the rotation of the key, and a locking portion that is movable from the rotation locus of the clasp to the outside of the rotation locus,
The said latching part is outside the rotation locus | trajectory of the said latch when the said cover is in a closed state, and it is on the rotation locus of the said latch when the said cover is an open state, The claim characterized by the above-mentioned. The brake cylinder cock relocation forgetting prevention device according to any one of claims 1 to 3. The cover includes a key receiving unit that locks or releases the opening and closing operation of the cover by inserting and rotating the key,
The opening and closing operation of the cover is interlocked with the rotation of the key inserted into the key receiving portion,
When the key is inserted into the key receiving portion and rotated in one direction, the cover rotates and becomes an open state, and when the key is rotated from this state to a position where the key is inserted into the key receiving portion, the cover is closed. 4. The brake cylinder cock restoring and forgetting forgetting device according to claim 1, wherein the device is in a closed state. 5.

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