JP3022830U - Ball cock closed state detection device of fire pump car - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a ball cock closed state detection device for a fire pump vehicle, which has a simple structure, is not easily damaged, can detect the closed state with high accuracy, and can easily adjust the detection accuracy. . [Structure] By rotating the operating rod 25 counterclockwise to bring the protruding portion 24a into contact with the stopper pin 11,
The ball cock B is in the closed state where the flow passage is closed, and the operating rod 25 is rotated in the clockwise direction to bring the protruding portion 24b into contact with the stopper pin 11 to open the flow passage. And a proximity switch 41 which is provided in the mounting portion 24 and which is provided in the housing 1 and whose state is switched by the action of the action body 43.
Proximity switch 4 with ball cock B closed
In the positional relationship in which the acting body 43 acts on 1, the proximity switch 4
1 and the acting body 43 are arranged.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a ball cock closed state detection device for a fire pump vehicle that detects the closed state of a ball cock.

[0002]

[Prior art]

 In general, fire-fighting pump vehicles are provided with an operation unit that can be operated on both the left and right sides of the vehicle body, and a water intake port and a water discharge port are also provided on the left and right sides. Therefore, for example, when the right operation part is operated to extinguish a fire, for example, the water suction pipe is connected to the right water inlet and the hose is connected to the right water outlet. With the water suction pipe and hose connected in this way, with the water delivery engine running, of the ball cocks that are closed, the ball cocks on the right side water inlet and right side water outlet are open. By doing so, it is possible to supply water from the water suction pipe connected to the right side water intake port to the hose connected to the right side water discharge port.

When performing the fire extinguishing work as described above, in order to prevent water from being discharged from unnecessary spouts and the like, it is necessary to close the water spout to which the water suction pipe is not connected and each spout Therefore, when sending water, it is necessary to confirm that the state of each ball cock is closed. In order to make it possible to confirm that each ball cock is in the closed state in this way, a ball cock closed state detection device for the ball cocks of each water intake port and each water discharge port Is provided so that the open / closed state of each ball cock can be confirmed on the monitor of each operation unit.

FIG. 3 is a plan view showing a conventional ball cock closed state detection device for a fire pump vehicle, and FIG. 4 is a right side view showing a mounted state of a micro switch. In FIGS. 3 and 4, reference numeral B denotes a ball cock, which is a housing 1 as a fixed side, and a rotation side 21 provided on the housing 1 which stops rotation in a closing direction or an opening direction described later. It is composed of a stopper pin 11 for rotating and a rotating side 21 for rotating with respect to the housing 1.

The housing 1 described above is attached with a flow passage communicating with the water supply port or the water discharge port. The rotation side 21 is rotatably accommodated in the housing 1 and opens and closes the flow passage. A ball valve 22 (not shown) is connected to the ball valve 22 and is provided outside the housing 1 partially. Is composed of a rotating rod 23 protruding from the housing 1, an attaching portion 24 fixed around the portion of the rotating rod 23 protruding from the housing 1, and an operating rod 25 attached to the attaching portion 24. ing. The mounting portion 24 is formed in a tubular shape into which the rotary rod 23 fits, and is provided with two projecting portions 24a and 24b that abut against the stopper pin 11.

Reference numeral 31 denotes a bracket attached to the housing 1, 32 denotes a micro switch. In the micro switch 32, the tip of a turning lever 33 is projected in the turning path of the projecting portion 24 a, and the turning lever 33 is provided. A roller 34 with which the protruding portion 24a abuts is attached to the tip portion of the roller.

Next, the operation will be described. First, as shown by the solid line in FIG. 3, the projecting portion 24a of the mounting portion 24 turns the turning lever 33 via the roller 34 to turn on the micro switch 32, for example, and hit the stopper pin 11. With the ball cock B closed, the operating lever 25 is rotated clockwise as shown by the chain double-dashed line in FIG. 3, and the protruding portion 24b is brought into abutment with the stopper pin 11. When 33 is not pushed by the protruding portion 24a and is rotated counterclockwise, the micro switch 32 is turned off, and when the ball valve 22 is rotated through the rotating rod 23, the flow passage is formed. When the ball cock B is opened, the ball cock B is opened.

When the operating rod 25 shown by the chain double-dashed line in FIG. 3 is rotated counterclockwise and the projecting portion 24a is abutted against the stopper pin 11 as shown by the solid line in FIG. When the lever 33 is pushed by the projecting portion 24a via the roller 34 and rotates counterclockwise, the micro switch 32 is turned on, and the ball valve 22 rotates via the rotating rod 23. As a result, the flow passage is closed and the ball cock B is closed.

[0009]

[Problems to be solved by the device]

 In the conventional ball cock closed state detecting device for a fire pump vehicle, since the bracket 31 must be attached to the housing 1 and the micro switch 32 must be attached to the bracket 31, the structure becomes complicated. Since the micro switch 32 projects, the micro switch 32 may be damaged due to an object hitting, and the closed state and the open state of the ball cock B may not be detected.

Further, even if the micro switch 32 is not damaged due to something hitting, if the mounting position of the rotating lever 33 changes, the closed state of the ball cock B cannot be detected or the ball cock B is closed. Although it is not in the state, it may be erroneously detected as the closed state. Further, although the micro switch 32 is turned on or off depending on the displacement of the turning lever 33, the micro switch 32 must be turned on in accordance with the closed state of the ball cock B. However, it is difficult to adjust the mounting position of the rotating lever 33 so that the closed state can be detected accurately.

The present invention has been made to solve the above-mentioned inconvenience, and has a simple structure, is not easily damaged, can detect the closed state with high accuracy, and can easily adjust the detection accuracy. It provides a device for detecting the closed state of a ball cock of a fire pump car.

[0012]

[Means for Solving the Problems]

 The ball pump closed state detection device for a fire pump vehicle according to the present invention closes the flow passage by rotating the rotating side in one direction with respect to the fixed side and bringing the rotating side into contact with the stopper pin. When the ball cock is opened, the flow passage is opened by turning the turning side in the other direction with respect to the fixed side and bringing the turning side into contact with the stopper pin. , A proximity switch that is provided on the rotating side of the ball cock and a fixed side of the ball cock that switches the state by the action of the acting body. The proximity switch and the object to be detected are arranged in such a positional relationship that the acting body acts on the proximity switch in the closed state. Then, it is desirable to provide a position adjusting mechanism for adjusting the relative position of the proximity switch and the action body on the rotation side in the rotation axis direction.

[0013]

[Action]

 In the device for detecting the closed state of the ball cock of the fire pump vehicle in this invention, when the ball cock is closed by rotating the rotating side in one direction, the proximity switch is turned off by the action of the acting body. To turn on. When the ball cock is opened by rotating the rotating side in the other direction, the object does not act on the proximity switch, and the proximity switch changes from the on state to the off state.

[0014]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing a ball cock closed state detecting device of a fire pump vehicle according to an embodiment of the present invention, and FIG. 2 is a partially cutaway right side view showing a mounting state of a proximity switch and the like. The same or corresponding parts as those in FIGS. 3 and 4 are designated by the same reference numerals and the description thereof will be omitted.

In FIGS. 1 and 2, reference numeral 2 denotes an insertion hole formed in the housing 1, which is formed in a surface facing the mounting portion 24 in the axial direction of the rotating rod 23. Reference numeral 3 denotes a screw hole formed in the housing 1, which is formed orthogonal to the insertion hole 2 so as to communicate with the insertion hole 2. Reference numeral 24c denotes a screw hole formed in the protruding portion 24a of the mounting portion 24, which is formed in the axial direction of the rotating rod 23. The insertion hole 2 and the screw hole 24c are formed so as to be located on the same straight line.

Reference numeral 41 denotes a proximity switch, which is inserted into the insertion hole 2 and is fixed by a hexagon socket set screw 42 screwed into the screw hole 3 and is operated by an action body 43 described later. The state changes from the off state to the on state, or from the on state to the off state. Reference numeral 43 denotes an action body, which is attached by being screwed into the screw hole 24c, and when the proximity switch 41 is approached, the proximity switch 41 is changed from, for example, an off state to an on state, and is moved away from the proximity switch 41. The proximity switch 41 is changed from the ON state to the OFF state. The acting body 43 has a hexagonal hole.

Next, the operation will be described. First, as shown by the solid line in FIG. 1, the action body 43 acts on the proximity switch 41 to turn on the proximity switch 41, and the protrusion 24a abuts the stopper pin 11 to close the ball cock B. In this state, as shown by the chain double-dashed line in FIG. 1, when the operating rod 25 is rotated in the clockwise direction and the protruding portion 24b is abutted against the stopper pin 11, the acting body 43 separates from the proximity switch 41, The proximity switch 41 is turned off, and the ball valve 22 is turned through the turning rod 23 to open the flow passage, and the ball cock B is opened.

When the operating rod 25 shown by the chain double-dashed line in FIG. 1 is rotated counterclockwise and the projecting portion 24a is brought into abutment with the stopper pin 11 as shown by the solid line in FIG. When 43 approaches the proximity switch 41, the proximity switch 41 is turned on, and the ball valve 22 is rotated through the rotating rod 23, so that the flow passage is closed and the ball cock B is closed. It is in a state of formation.

Next, the adjustment of the detection accuracy will be described. For example, the accuracy of detection can be adjusted by fitting the tip of a hexagonal wrench into the hexagonal hole of the working body 43, rotating the working body 43, and adjusting the distance from the proximity switch 41.

As described above, according to the embodiment of the present invention, the proximity switch 41 and the working body 43 are configured to detect the closed state of the ball cock B. The structure can be simplified by disposing the working body 43 on the rotation side 21 of the ball cock B by disposing the working body 43 on the housing 1. And since there is no protruding part, it does not hit anything and is less likely to be damaged.

Since the closed state of the ball cock B is detected by the proximity switch 41, the closed state of the ball cock B can be accurately detected. Further, since the position adjusting mechanism for adjusting the distance between the proximity switch 41 and the acting body 43 is provided, the detection accuracy can be easily adjusted.

In the above-described embodiment, when the proximity switch 41 is a mechanical type and a lead switch is used, the working body 43 is a magnet, and when the proximity switch 41 is a high frequency oscillation type and an oscillating coil is used, a working body 43 is used. When metal is used and the proximity switch 41 is an inductive bridge type and an inductance bridge is used, the acting body 43 may be a magnetic body. The example of the position adjusting mechanism in which the action body 43 is rotated to adjust the distance from the proximity switch 41 has been described, but the set screw 42 is loosened to move the proximity switch 41 in the axial direction of the rotation rod 23. The distance between the action body 43 and the proximity switch 41 and the action body 43 may be changed, that is, the relative positions of the proximity switch 41 and the action body 43 may be adjusted.

[0023]

[Effect of device]

 As described above, according to this invention, since the closed state of the ball cock is detected by the proximity switch and the acting body, the proximity switch is arranged on the fixed side of the ball cock, and the acting body is placed on the ball cock. The structure can be simplified by disposing it on the rotation side of. And since there is no protruding part, it does not hit anything and is less likely to be damaged.

Further, since the closed state of the ball cock is detected by the proximity switch, the closed state of the ball cock can be accurately detected. Further, since the position adjusting mechanism for adjusting the distance between the proximity switch and the working body is provided, the detection accuracy can be easily adjusted.

[Submission date] October 4, 1995

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

[0012]

[Means for Solving the Problems]

The ball pump closed state detection device for a fire pump vehicle according to the present invention closes the flow passage by rotating the rotating side in one direction with respect to the fixed side and bringing the rotating side into contact with the stopper pin. When the ball cock is opened, the flow passage is opened by turning the turning side in the other direction with respect to the fixed side and bringing the turning side into contact with the stopper pin. , A proximity switch that is provided on the rotating side of the ball cock and a fixed side of the ball cock that switches the state by the action of the acting body. the a positional relationship acts working body proximity switch the state and closed state, in which place the the working body and the proximity switch. Then, it is desirable to provide a position adjusting mechanism for adjusting the relative position of the proximity switch and the action body on the rotation side in the rotation axis direction.

[Brief description of drawings]

FIG. 1 is a plan view showing a ball cock closed state detecting device for a fire pump vehicle according to an embodiment of the present invention.

FIG. 2 is a right side view with a part broken away showing a mounting state of a proximity switch and the like.

FIG. 3 is a plan view showing a ball cock closed state detection device of a conventional fire pump vehicle.

FIG. 4 is a right side view showing a mounted state of the micro switch.

[Explanation of symbols]

 B Ballcock 1 Housing 2 Insertion hole 3 Screw hole 11 Stopper pin 21 Rotating side 23 Rotating rod 24 Mounting part 24a, 24b Projecting part 24c Screw hole 25 Operating rod 41 Proximity switch 42 Set screw 43 Working body

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[Procedure amendment]

[Submission date] October 4, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Scope of utility model registration request

[Correction method] Change

[Correction content]

[Scope of utility model registration request]

Claims (2)

[Scope of utility model registration request] 1. A rotation path is rotated in one direction with respect to a fixed side to bring the rotation side into contact with a stopper pin, thereby forming a closed state in which a flow passage is closed, and the fixed side. A ball cock that is in an open state in which the flow passage is opened by rotating the rotating side in the other direction and bringing the rotating side into contact with a stopper pin; And a proximity switch which is provided on the fixed side and whose state is switched by the action of the acting body, and the state where the ball cock is closed by turning the turning side. A ball cock closed state detection device for a fire pump vehicle, wherein the proximity switch and the detected object are arranged in a positional relationship in which the acting body acts on the proximity switch. 2. The ball cock closed state detection device for a fire pump vehicle according to claim 1, wherein a position for adjusting a relative position of the proximity switch and the acting body in a rotation axis direction on the rotation side. A ball cock closed state detection device for a fire pump vehicle, characterized by having an adjustment mechanism.