JP2003144573A - Fire hydrant device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently and safely perform the maintenance and inspection of a fire extinguishing device. SOLUTION: The fire extinguishing device comprises a latch mechanism for maintaining the closing state of a door body 40, a handle 42 for releasing the latch mechanism by the operation of a user, a receiving part 48 of a manipulator 2 besides the handle 42 and an engaging member 47 for releasing the latch mechanism.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire hydrant apparatus for a fire extinguishing facility including a fire hydrant and a fire extinguisher, and more particularly to a fire hydrant apparatus including an operating section dedicated to a robot.

Fire extinguishing equipment such as a fire hydrant device requires periodic maintenance and inspection. Therefore, conventionally, maintenance personnel perform maintenance and inspection in the following manner.

For example, when the fire hydrant device in a tunnel is to be inspected and inspected, a plurality of maintenance personnel bring pressure gauges, water discharge flow rate measuring instruments, etc. into the tunnel, observe the appearance of the fire hydrant box, and then handle the door. Grasp and pull toward you. Then, the latch mechanism of the door is released and the door is opened.

Then, a maintenance worker visually inspects the inside of the box. Next, remove the nozzle at the end of the hose connected to the fire hydrant, set a pressure gauge between the hose and the nozzle, pull the open / close lever to open the fire hydrant valve, and measure the water discharge pressure. Measure and record the discharge flow rate with a flow meter.

[0005]

In the maintenance and inspection of the conventional fire hydrant device, the door handle and the opening / closing lever must be manually operated by the maintenance inspector, which requires a lot of time and labor and is efficient. Absent. In addition, since vehicles pass through the tunnel, it is extremely dangerous unless there is a monitoring passage.

In view of the above circumstances, an object of the present invention is to perform maintenance and inspection of fire extinguishing equipment efficiently and safely.

[0007]

According to the present invention, a fire hydrant hose having a nozzle connected to a tip thereof is housed in a fire hydrant box, and a door is arranged in front of the fire hydrant box. A latch mechanism for maintaining the closed state of the door body, a handle for releasing the latch mechanism by a user's operation, and a receiving portion for an operating member separately from the handle, and the latch mechanism is released. And an engaging member that does.

An operating member is engaged with the receiving portion of the engaging member through a through hole provided in the door body, and the through hole provided in the door body is formed smaller than a human finger.

Further, when the handle has a stroke for sliding the latch of the latch mechanism, the stroke of the engaging member is made larger than the stroke of the handle, and at the same time, the operating force of the engaging member is made smaller than that of the handle. is doing. Further, when the handle has a stroke for sliding the latch of the latch mechanism, the operating force of the engaging member is made larger than the operating force of the handle, and at the same time, the stroke of the engaging member is made smaller than that of the handle. Are

The present invention relates to a fire hydrant device in which a fire hydrant valve connected to a fire hose having a nozzle connected to its tip is housed in a fire hydrant box; an open / close lever for opening / closing the fire hydrant valve, and the open / close lever. Separately, a receiving portion for an operating member is provided, and an engaging member for opening / closing the fire hydrant valve in conjunction therewith is provided.

The opening / closing lever is interlocked with a fire hydrant valve by a wire, and the engaging member is connected to the wire. Further, as compared with the stroke of the wire by the opening / closing lever, the stroke of the engaging member is increased, and at the same time, the operating force of the engaging member is made smaller than that of the opening / closing lever. Further, the operating force of the engaging member is made larger than the operating force of the wire by the opening / closing lever, and at the same time, the stroke of the engaging member is made smaller than that of the opening / closing lever.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The present inventor has conducted an experimental study by considering that a robot is used for extinguishing a fire in a tunnel, and considering the maintenance and inspection of fire extinguishing equipment by the robot. As a result, we improved the door latch release mechanism, fire hydrant valve opening and closing mechanism, etc. to make the robot easier to operate.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. 1 to 15. This embodiment relates to maintenance and inspection of a fire hydrant device S arranged in large numbers in a tunnel. The fire hydrant device S includes a forward tilting door 10a and a fire extinguisher door 10b.
Is provided. The front door 10a is kept closed by the latch mechanism 51.

As shown in FIG. 4, the latch mechanism 51 includes a latch groove 51a provided in the fire hydrant box 10 and a door body 40.
And a latch 51b provided on the. The lower end of the latch 51b has a force point 51d of the operating arm 51c.
Is pivoted to the door body 4 and the fulcrum 51e of the operating arm 51c is
It is axially fixed to 0, and its action point 51f is axially fixed to the upper end of the connecting rod 45.

The lower end of the connecting rod 45 is axially fixed to the point of action 44c of the operating rod 44. The fulcrum 44 of this operating rod 44
A is axially fixed to the door body 40, and a handle 42 is provided at its power point. As shown in FIG. 4, the handle 42 penetrates a through hole 41 provided in the handle portion 15 of the door body 40.

The handle 42 is used when a maintenance worker manually opens the door.
When you hold and pull it toward you, the latch release mechanism operates,
Open the door. An engaging member 47 is vertically provided on the operating rod 44. The engaging member 47 is provided on the handle 42.
It is erected on the opposite side to and closer to the fulcrum 44a than the handle 42. A concave receiving portion 48 is provided at the tip of the engaging member 47. The door body 40 facing the receiving portion 48 of the engaging member 47 is provided with a through hole 50. The size L of the through hole 50 is set so that a finger cannot be inserted therein, but is formed in a vertically long shape so that the tip 2a of the manipulator 2 can be easily pulled out.

The latch mechanism 5 of the manipulator 2 is used.
Stroke 52S when sliding the latch 51b of No. 1
Is larger than the stroke θ of the handle 42, and the operating force of the manipulator 2 is smaller than that of the handle 42. The stroke θ of the handle 42 and the stroke 52S of the engaging member 47 in the latch mechanism 51 determine the operating force depending on the distance from the fulcrum 44a, and in this embodiment, a maintenance worker when the handle 42 is used. It is assumed that the operating force of the manipulator 2 is weaker than the operating force of. Therefore, the operating force of the driving device of the manipulator 2 (not shown) mounted on the maintenance / inspection robot 1 can be increased, in which case the receiving portion 48 of the engaging member 47 can be brought closer to the fulcrum 44a, and The latch mechanism 51 can be operated with a small stroke. A back plate 55 is provided on the back surface of the forward tilting door 10a, and the hose reel 18 and the opening / closing lever 12 are provided on the back plate 55, as shown in FIG.

A fire-extinguishing hose H is wound around the hose reel 18, and a fire-extinguishing nozzle N is connected to the tip of the hose H. The nozzle N is held by a nozzle holder (not shown). The opening / closing lever 12 is used when a maintenance staff manually opens and closes the fire hydrant valve 11. When the lever 12 is held and pushed by hand, the fire hydrant valve 11 opens.

As shown in FIG. 13, the opening / closing lever 12 is fixed to a pulley 56, and a wire 57 is wound around the pulley 56. The wire 57 is fixed to the fixing portion 56.
It is fixed to a. The wire 57 is inserted into a tube 60 fixed to a fixed plate 58,
The wire between 6 and the fixing plate 58 is provided with a connecting member 61. The connecting member 61 has a flat plate portion 62a which is fixed to the wire 57 and which has one end fixed to the shaft 64a and which penetrates the connecting rod 64, and which also penetrates the connecting rod 64 on the opposite side to the shaft 64a side. 62 is provided. In addition, the movement of the receiving portion 62 is linearly supported by the opening 62b provided in the forward tilting door 10a. This receiving portion 62 has a U-shaped groove 6
3 and a receiver 65 that crosses the groove 63.

The manipulator 2 is operated when the valve is opened.
Stroke 2S of the stroke α by the opening / closing lever 12
Is larger than the stroke 76S of the connecting member 61, and the operating force of the manipulator 2 is smaller than that of the opening / closing lever 12. Further, if the connecting rod 64 is extended to the shaft 64a side to have a double length and a receiving portion similar to the receiving portion 62 is formed, the operation of the connecting member 61 in the reverse direction can also be performed in the direction of arrow A62 of the manipulator 2. It can be operated by moving in the same direction as. The stroke 61S of the connecting member 61 and the stroke 2S of the receiving portion 62, which correspond to the stroke α of the opening / closing lever 12 in the opening / closing mechanism of the fire hydrant valve 11 as described above, determine the operating force depending on the distance from the shaft 64a serving as the fulcrum. In this embodiment, it is assumed that the operating force of the manipulator 2 is weaker than the operating force of the user when using the opening / closing lever 12. Therefore, the operating force of the drive device of the manipulator 2 (not shown) mounted on the maintenance / inspection robot 1 can be increased, and in this case, the receiving portion 62 can be brought closer to the shaft 64a, that is, the receiving portion 62 The position can be arranged closer to the shaft 64a than the connecting member 61, and the connecting member 61 can be moved with a small stroke.
Can be operated. This fire hydrant box 10
Is buried in the side wall 31 of the tunnel Tn, and a monitoring passage 33 is provided between the fire hydrant box 10 and the road 32.

The maintenance / inspection robot 1 includes a manipulator 2
An ITV camera 3, a water discharge inspection device 27 having a water discharge connection port 4, a positioning positioner 5, a computer CP having a CPU (central processing unit) 6 and a storage unit 8.
And traveling wheels 7.

The maintenance / inspection robot 1 executes the inspection of these fire hydrant devices by automatic control or remote control. Here, the automatic control is a predetermined operation (or inspection) while performing a predetermined operation (or inspection) based on an operator's or self's instruction without making a human judgment.
The remote control is a control for executing the operation of the instruction based on the instruction of the operator without the maintenance / inspection robot 1 making a judgment. For example, tunnel T
In the inspection work of all the fire hydrant devices in n, the inspection work of one fire hydrant device, or the inspection work of one inspection item, whether or not the inspection result is normal is determined automatically.

The manipulator 2 is instructed by the CPU 6 so that the forward sloping door 10a and the fire extinguisher door 10b of the fire hydrant box 10 are instructed.
And opening / closing operation of the open / close lever 12 of the fire hydrant valve, and the like, which are provided with a load sensor and a stroke measuring device (not shown) for measuring a load required for the operation. The tip of this manipulator 2 is formed in a rod shape,
The object to be operated, for example, a shape capable of engaging with the receiving portion 48 of the forward tilting door 10a. In the present embodiment, one manipulator 2 is provided, but a plurality of manipulators 2 having different tip shapes and functions (functions for measuring load, stroke, etc.) are arranged as necessary.

A plurality of different tip portions are prepared,
This may be exchanged if necessary. The load sensor (not shown) is provided on the tip end or arm of the manipulator 2, and the shape, the mounting position, and the load measuring direction are provided according to the operated object.

The ITV camera 3 is a device for capturing the situation and operation of the fire hydrant device by an image, and the image is a CPU.
6, the image processing is judged, and it is sent to the disaster prevention center or the like via an image transmitting means (not shown). ITV
The camera 3 is provided with means for observing the external appearance by the CPU 6 and for turning the camera up and down, left and right, or moving up and down, left and right, forward and backward so as to orientate the object while the manipulator 2 is being operated, automatic focusing, and a zoom up function. Has been. The illuminator (not shown) moves toward the ITV camera 3 in the direction of ITV.
It is mounted on the camera 3, depending on the darkness or ITV
It is turned on according to the use of the camera 3.

The light color of the illuminator may be white or a complementary color of the illumination color of the tunnel as long as it is easy to determine whether the color of the light is a coating color or an abnormal color such as rust when observing the appearance. Well, for example, if the tunnel lighting is a sodium lamp, it is orange, so if the complementary green light is adopted, the composite color will be white, and it will be easy to judge.

A white illuminator close to a point light source (not shown) is provided at a position distant from the ITV camera 3 so as to be movable vertically and horizontally.

The water discharge connection port 4 of the water discharge inspection device 27 is connected to the maintenance valve 17 for testing with the forward tilting door 10a open, and the water discharge test is performed.

The water discharge inspection device 27 has a water discharge connection port 4 at its tip.
And an expandable tubular body 27a, a rotation source portion 27c that is supported by the proximal end of the tubular body 27a and moves freely, and a water discharge nozzle 30 connected to the proximal end of the tubular body 27a via a flow meter 29. It is composed of a pipe line 27b to be connected and a pressure sensor 28 attached in front of the water discharge nozzle 30. In addition, the second outlet 22 of the maintenance valve 17, the cylindrical body 27a, and the pipe line 27b.
The water discharge nozzle 30 forms a water discharge passage 38.

In the vicinity of the water discharge connection port 4, a small ITV that works under the control of the CPU 6 in conjunction with the rotation base 27c to facilitate the insertion of the water discharge connection port 4 into the maintenance valve 17. The camera 4a is mounted. Further, when the flowmeter 29 is an electromagnetic flowmeter, there is no shield in the measuring pipe, so that there is no pressure loss and accurate nozzle pressure can be measured. As shown in FIG. 8, the water discharge inspection device 27 is initially stored vertically in the robot 1 in a shortened state as shown by a solid line, facing vertically downward.

When using the water discharge inspection device 27, the CPU 6
As indicated by the alternate long and short dash line, for example, the cylinder 27a is lifted up to the design depression angle, the cylinder 27a extends to the design length, and the water discharge connection port 17 on the outer circumference of the tip is inserted into the maintenance valve 4.
A water discharge inspection device 2 for fine adjustment of alignment when inserting
The CPU 6 operates a position angle adjusting device (not shown) that allows the rotation source part 27c of FIG. 7 to move left and right, up and down, or front and back, and also to swing left and right and rotate the shaft.

Further, the tip of the cylindrical body 27a is made flexible so that some angular error is absorbed. The water discharge connection port 4 is formed, for example, as shown in FIG. 7, so that it can be attached to and detached from the maintenance valve 17 with one touch.

The maintenance valve 17 is a fire hydrant valve 11.
Is a direction switching valve provided on the secondary side of the valve body 19
Is seated on the second valve seat 25, the second outlet 22 is closed,
The inflow port 23 and the first outflow port 21 communicate with each other. Also, the valve body 1
When 9 is seated on the first valve seat 26, the first outlet 21 is closed,
The inflow port 23 and the second outflow port 22 communicate with each other.

The water discharge connection port 4 is provided so as to open to the outer periphery of the tip end portion of the water discharge inspection device 27, and is attached to and detached from the second outflow port 22. When the connection port 4 is inserted into the second outflow port 22, the valve body 19 is pushed up by the tip of the tubular body 27a to switch the flow path, and the engaging portion 4b of the slider 4c of the connection port 4 is engaged. Both are fixed by engaging with the mating groove 22a.
When separating the two, the engagement state is released by rotating the connection port 4, that is, the tubular body 27a of the water discharge inspection device 27 in a predetermined direction around the axis, and it is easy to pull the connection port 4 toward you. Exit to.

Further, the slider 4c may be a cylinder attached to the tubular body 27a and having an engaging portion 4b at its upper end, or may be an elastic strip having an engaging portion 4b at its tip.

A pressure sensor 2 is provided on the downstream side of the connection port 4.
8, a flow meter 29, a water discharge nozzle 30 having the same specifications as the fire hydrant device, and the like are provided. The water discharge nozzle 30 is changed to an optimum one for each test target place.

As shown in FIG. 3, the positioning positioner 5 is a photoelectric or magnetic sensor, for example, a light emitter 5a for irradiating the bar code 14 provided at the designed position of the fire hydrant box 10 with detection light. The light receiver 5b receives the reflected light from the bar code 14. Since the CPU 6 controls the position of the robot 1 based on the output of the positioner 5, the robot 1 can be accurately stopped at the design inspection position of the fire hydrant device.

The bar code 14 has information as
Manufacturer of fire hydrant device, article name, model number, serial number,
Information about the location of the fire hydrant device and the date of manufacture are included. Bar code 14 attached to the front of the fire hydrant box 10
The sheet 14P may be horizontally long (the bar code forming bar is a vertical line), but vertically long (bar code forming bar is a vertical line).
You should stick the one. Positioning positioner 5 that scans while moving horizontally by attaching a vertically long sheet
Can detect the existence of an object to be inspected without fail, because there is no possibility of being missed due to the vertical position shift. The barcode 14 may be of the magnetic type as well as the light reflection type.

The CPU 6 of the computer CP is a control device for the robot 1 and controls traveling and manipulator 2
Control, face-to-face control with the fire hydrant box 10, camera work control of the ITV camera 3, control of the water discharge inspection device 27, control of the illuminator, control of the fall bar 36, etc., as well as load sensors, pressure sensors not shown. 28, flow meter 29, ITV
Camera 3, positioning positioner 5, manipulator 2
Information processing of the stroke measuring device 39 of FIG. Also, C
The PU 6 executes a predetermined maintenance inspection program stored in the storage unit 8 to perform inspection work and measurement work,
Based on this measurement result and information processing, it is automatically controlled to determine whether the fire hydrant device is normal or not.

When the operator remotely instructs to execute the inspection work of all or one of the fire hydrant devices in the tunnel Tn or one inspection item, or a part of the operation of the inspection item, this operation is performed. Upon receipt of the instruction, the CPU 6 determines the information necessary for executing the instruction, that is, the situation around the robot 1 by the above-mentioned control and information processing such as camera work control and video information processing. The CPU 1 so that the robot 1 moves autonomously.
6 may be automatically controlled.

Although the above is the case of the automatic control, in the case of the remote control, when the operator operates, for example, an operating rod (not shown), for example, a continuous operation instruction signal is transmitted and the received operation instruction signal is received. The CPU 6 may simply cause the robot 1 to execute a normal operation without judging the situation.

The traveling wheels 7 are driving wheels for moving the main body 20 of the robot 1, and move the maintenance / inspection robot 1 in a predetermined direction by a battery, an external power source, or an engine. The traveling wheels 7 can be moved in any direction by a mechanism (not shown).

The support wheel 35 is provided on the support wheel leg 20a projecting from the rear surface of the main body 20 and is grounded to the roadway 32, and an abnormal force is applied when the robot pushes and closes the door. I try not to fall on the side of the road 32. Further, the support wheel leg 20a can be expanded and contracted in accordance with the height of the monitoring passage 33 to change the height, so that it is possible to cope with no step. Further, the guide wheel 34 is provided inside the leg 20a for the supporting wheel, and contacts the side surface of the monitoring passage 33 so that the leg 20a does not contact the monitoring passage 33 and be damaged. The support wheels 35 and the support wheel legs 20a may not be provided on the floor surface or the traveling mechanism at the site.

Next, the procedure of the operation and inspection method of this embodiment of the maintenance / inspection robot 1 will be described. As shown in FIG. 2, the robot 1 is placed on the monitoring passage 33 of the tunnel Tn, the supporting wheels 35 are attached to the road 32, and the maintenance inspection is prepared (S1). At this time, the fallen bar 36 is the fire hydrant box 1
It projects to the extent that it can approach the upper part of 0.

The rod 36 expands and contracts under the control of the CPU 6 as needed when the front tilting door 10a is opened. This stick 36
Is equipped with two right and left so as to face the frame portion of the fire hydrant box 10 excluding the forward tilting door 10a, the fire extinguisher door 10b, the indicator light, etc., but the number of the defeat rods 36 is selected as necessary. You can do it.

For example, when an inspection start signal is sent from the control panel (not shown) in the disaster prevention center to the CPU 6 via the antenna 37, the traveling wheels 7 rotate and the robot 1 starts traveling along the monitoring passage 33 ( S2). At this time, the traveling is guided by a tracer (not shown) which keeps a constant distance from the edge of the monitoring passage 33, and the robot 1 is not separated from the edge of the monitoring passage 33. This tracer may be carried by the guide wheel 34.

At this time, the positioning positioner 5 is also operating, and when the robot 1 reaches the position of the fire hydrant box 10 to be inspected, the light from the light emitter 5a is reflected by the bar code 14 and enters the light receiver 5b ( S3). Then, since the detection signal is sent from the light receiver 5b to the CPU 6, the C
The PU 6 stops driving the traveling wheels 7. Therefore, the robot 1 accurately stops at the design position (S4).

At this time, the relative position or direction of the robot 1 with respect to the fire hydrant device is the bar code 14 in the traveling direction.
Positioning can be done with and the positioning positioner 5,
The face-to-face distance with the fire hydrant device and the inclination angle (face-to-face horizontal angle) can be obtained by extending the fall-proof rod 36 and bringing it into contact with the face-to-face fire hydrant device.

A contact sensor (not shown) is provided at the tip of the anti-falling rod 36, and a stroke sensor (not shown) capable of detecting the extension dimension is provided on the arm portion of the anti-falling rod 36. Since the dimensions are respectively output, the distance and the inclination angle from the measured value to the facing fire hydrant device can be known from the CPU 6. From this measured value, the traveling wheel 7 may be controlled by the CPU 6 to make the robot and the fire hydrant device parallel to each other to obtain a predetermined relative positional relationship, that is, to make them face each other.

The positioning positioner 5 includes a bar code 14
Is read and transmitted to the CPU 6. Based on this information, the CPU 6 confirms whether or not it is the fire hydrant device to be inspected and whether or not it is directly facing the fire hydrant device (S5).

When confirming the above, the CPU 6 gives an instruction to start inspection. First, rotate the ITV camera 3,
If necessary, an illuminator (not shown) is turned on to photograph the exterior of the fire hydrant box 10, and the photographed image is sent to the CPU 6. This appearance check is mainly for appearance damage, deformation,
Check for corrosion, lighting of indicator light, etc. (S6).
The appearance check is performed by, for example, an image of the individual fire hydrant device taken by the robot 1 in an initial state such as an installation state at the time of construction or an image of a new fire hydrant device, that is, in a predetermined situation. A certain reference image is compared with an image of the fire hydrant device photographed during inspection as an observed situation by image processing.

That is, the image of the fire hydrant device photographed in the inspection is converted into, for example, an image of the appearance seen from the same distance and angle as the reference image and an image of the same average brightness, and these are compared to obtain the difference. As a result, the CPU 6 determines whether the external appearance is damaged or deformed. If there is no difference equal to or more than the predetermined value, the CPU 6 determines that the appearance check is normal. For example, if the indicator light is turned off when it is turned off as a reference image, it will be normal if it is brighter than the reference image to a certain degree, but here, because the surface reflected light of the indicator light is not mistakenly recognized, red light is recognized. You may do it.

Regarding the corrosion, after cleaning with a cleaning device (not shown), the images may be compared to be distinguished from dirt, and the appearance may also be abnormal. This judgment (evaluation) is stored in the storage unit 8 and sent to the control panel of the disaster prevention center. The photographed image may be sent to the disaster prevention center together with the data of the barcode 14.

Next, the ITV is controlled by the CPU 6.
The CPU 6 recognizes the position of the through hole 50 of the forward tilting door 10a, which is the fire hydrant door, based on the image of the front surface of the fire hydrant device taken by the camera 3 and the measurement distance from the stroke sensor of the fireproof rod 36. Then, under the control of the CPU 6, the robot 1 extends the manipulator 2 and inserts it into the through hole 50 as shown in FIG. 4, and engages a load sensor (not shown) attached to the tip 2a of the manipulator 2 with the receiving portion 48, Slowly push in the direction of arrow A12 while maintaining the engaged state.

Then, the operating rod 44 rotates about the fulcrum 44a, and the state shown in FIG. 4A changes to the state shown in FIG. 4B, the connecting rod 45 is pulled, and the latch 51b is attached to the fire hydrant box 10. The door is disengaged from the latch groove 51a, and as shown in FIG. 5, the forward tilting door 10a rotates and falls down, and the forward tilting door 10a is opened (S7).

The fire hydrant box 10 is provided with a closing limit switch (not shown) between it and the forward tilting door 10a which is being closed, and when the latch 51b is disengaged and the forward tilting door 10a starts to open, that is, the opening starts. At this time, the closing limit switch is turned off so that unlocking and locking of the latch can be recognized by the closing limit switch. In addition, the fire hydrant box 10 has a fully open front tilting door 10
A fully open limit switch (not shown) is provided between the front door 10a and a and is turned on only when the forward tilting door 10a is fully open. A transmission means is provided for transmitting the information to the maintenance / inspection robot 1, but a detailed description of the transmission means will be omitted.

The on / off states of the closed limit switch and the fully open limit switch are indicated by display means such as LEDs (not shown) provided on the front surface of the fire hydrant device.
The display status of these display means may be captured by the ITV camera 3 so that the CPU 6 recognizes whether the forward tilting door 10a is fully opened or fully closed, or directly or fully closed by image processing.

Then, the load sensor 13 (not shown) measures the load applied to the manipulator 2 between the start of the engagement of the tip 2a of the manipulator 2 with the receiving portion 48 and the release of the latch. Sent out.

From the measured value, the CPU 6 compares the load required for the release operation of the latch release mechanism 51 of the forward tilting door 10a, that is, the maximum load of the measured value with the allowable range of the reference load, and determines whether the load is normal or not. A judgment is made (S8). This judgment (evaluation) is stored in the storage unit 8 and sent to the control panel of the disaster prevention center.

Incidentally, the completion of unlocking is judged by the CPU 6 recognizing information on a closing limit switch (not shown). In the case of the fire hydrant device which is not provided with the closing limit switch, the completion of unlocking is recognized by the ITV camera 3, for example.
The edges and corners of the front-tilt door 10a are photographed and recorded in close-up with the time, and the moment the front-tilt door 10a begins to open is determined to be unlocked by image processing, or the normal fire hydrant door receiver 48 is received. The stroke measuring device 39 measures the moving distance of the tip 2a of the manipulator 2 from the start of the engagement of
Measure and compare the measured values with this as a reference,
It may be determined that unlocking is completed when a predetermined stroke occurs.

After that, the operating condition of the forward-tilting door 10a is photographed by the ITV camera 3 and processed as a moving image to determine whether the operating condition such as the opening speed of the forward-tilting door 10a and the time required for opening is normal. Whether or not the components inside the tilting door 10a are stored in a normal state, whether there is harmful damage, deformation, corrosion, etc. is observed and checked (S
9).

With respect to the above, when the manipulator 2 is engaged with the forward-tilting door 10a and photographing is started by the start of load detection by a load sensor (not shown), movement at a predetermined position, for example, the upper end edge in the opening operation of the forward-tilting door 10a. Capture the movement of
Immediately after unlocking, a predetermined opening (for example, 30 degrees, 45 degrees, 60
Degree of time required to reach 90 degrees, 90 degrees, etc.) or “opening speed” is calculated, and this data is compared with a predetermined opening time or opening speed that serves as a reference, and this data is within the allowable range of each reference value. For example, it is determined whether or not the range is 1/4 to 2 times the reference value.

For example, first, an image of the normal fire hydrant device when the fire hydrant door 10a is opened by 30 degrees and the required time are stored as a reference, and at the time of inspection, the opening operation of the fire hydrant door 10a is the same as the reference. When the photographed image is taken from the viewpoint of the camera, the required time is stored assuming that the photographed image is opened 30 degrees when it coincides with the reference image, and the CPU 6 compares it with the reference to see if it is within an allowable range and determines whether it is normal or not. You may make a judgment.

Further, the time from when the closing limit switch (not shown) is turned off to when the fully opening limit switch (not shown) is turned on is taken as "time required for opening".
The "opening speed" may be calculated as an angular velocity by capturing the movement of the side edge where the rotation of the forward tilting door 10a is visible by image processing. If the full-open limit switch is not provided, the door-opening operation stop angle in image processing is the angle considered to be full-open (for example, 8
If it deviates from 5 degrees to 95 degrees), it is judged that the full opening is abnormal. Check the opening speed if it is too slow or too fast.

In the above, as the judgment means for judging whether the operation condition of the front tilting door 10a is normal or not, the stored image is image-processed so that it can be compared with the reference image, and the image is compared with the reference image to determine whether it is normal. The CPU 6 is used to determine whether or not. In the above, the time required from immediately after unlocking to full opening is handled, but it may be determined whether or not the time required from handle engagement to unlocking to normal opening is normal. In addition, for example, when a force is required to open the fire hydrant door after unlocking it until it is fully opened, the operation status of the fire hydrant device door must be the door open load from the engagement of the fire hydrant door to the fully opened state after unlocking. You may make it catch the change with time.

In this case, the load sensor (not shown) of the manipulator 2 is used for the measurement, but if the fire hydrant door is not of the forward tilting door 10a but of the rotary type, it has a predetermined opening (for example, 45 degrees).
Before that, the handle of the fire hydrant door may be pulled, and after that, it may be held by a second manipulator (not shown) and the edge of the fire hydrant door may be pushed open via the second load sensor. The storage unit 8 stores the measured values of the two load sensors. The CPU 6 (judgment means) determines whether or not this operating condition is normal by the maximum value of the stored measured values (force required for opening).
And the reference value are compared.

Regarding the above, basically, the judgment is carried out in the same manner as the appearance check. That is, moving components (hoses, nozzles, etc.) provided inside the door are removed from the judgment by image processing, and the other parts are compared with the reference screen by the appearance check method. In addition,
For the open / close lever, the image at the fixed position (closed) is used as a reference for comparison.

Further, a screen excluding the moving components (hoses, nozzles, etc.) is used as a reference screen for comparison, and this screen is compared with the image-processed screen, and the screen of the difference is moved to the position of the moving component. When the CPU 6 recognizes a characteristic such as an average color of a component, it may be determined that the moving component is present. For example, in the case of a black rubber hose, the CPU 6 may determine that the hose reel is present when recognizing that a black portion exists in a certain area at the center position of the hose reel.

If the image is judged to be "abnormal", the image is sent to the disaster prevention center or the like together with the fire hydrant device number to prompt a response.
The image is stored so that the inspection manager can confirm or correct the corresponding evaluation item by viewing the image later. It should be noted that, when photographing the ITV camera 3, the position of the illuminator (not shown) should be installed away from the ITV camera 3 so that the operation and appearance of the inspection object can be better judged, and one white light source as close as possible to the point light source should be installed. Only by turning on the light, the shadow of the inspection object can be made clear. Further, when observing the inside of the inspection object, the illuminator moves to a predetermined position that illuminates the inside so that the inside can be seen well. The number of illuminators can be selected as needed.

Next, as shown in FIG. 8, the robot 1 initially faces the fire hydrant box 10 by the bar code 14 or the like as described above, that is, the robot 1 faces the fire hydrant box 10. If it is located at the design position and the face-to-face design angle (zero degree in this embodiment, that is, the parallel state), the water discharge inspection device 27 of the robot 1 is activated after the fire hydrant door is opened, and the cylindrical body 27a is, for example, the design angle. When standing up, the left and right (running direction) position and the depression angle of the water discharge connection port 4 are opposite to the left and right positions and the elevation angle of the second outlet 22 of the maintenance valve 17 of the fire hydrant device so as to face each other. You can

Therefore, the robot 1 uses the water discharge inspection device 27.
The cylinder 27a is extended and inserted into the second outlet 22 of the maintenance valve 17 (S10). Then, the valve body 19
Is pressed against the first valve seat 26 by being pushed by the water discharge connection port 4, so that the first outlet 21 is closed and the second outlet 22 and the inlet 23 are in communication. Since a small ITV camera 4a is provided on the top of the cylinder near the water discharge connection port 4, the CPU 6 adjusts the position of connection with the maintenance valve 17.
Can be done easily.

In this way, when the water discharge inspection device 27 and the maintenance valve 17 are connected, the water discharge passage 38 is formed, and if the pump has not been started yet, the manipulator 2 is used to push buttons such as a transmitter on the front of the fire hydrant box 10. When the pump is started by pushing, the water discharge test is ready. It should be noted that the pump may be stopped by operating the pump control panel in a disaster prevention center after the inspection of all the fire hydrant devices in the tunnel Tn is completed.

In the robot 1, the manipulator 2 is moved to insert the tip 2a into the groove 63 of the receiving portion 62, and the receiving body 65 is inserted.
And press in the direction of arrow A62 (S11) to open the fire hydrant valve 11. At this time, a load sensor (not shown) of the manipulator 2 measures an operation load required to open the fire hydrant valve 11 via the opening / closing lever 12 (S12), and a stroke measuring device (not shown) provided in the manipulator 2 is a stroke measuring device of the opening / closing lever 12. The stroke of the manipulator 2 corresponding to the stroke α is measured, and the pressure sensor 28 provided in the water discharge passage 38 is measured.
Measures the water discharge pressure when the fire hydrant valve 11 is opened, the flow meter 29 measures the water discharge flow rate, and the respective measured values are measured by CP.
Send to U6.

The CPU 6 determines whether the stroke 2S of the manipulator 2 sent corresponds to the full opening of the fire hydrant valve 11, or from the measured value, the maximum value of the operating load (however, the load data at the fully open stroke is excluded) becomes the reference value. It is determined whether or not the measured values are normal by comparing with each other, and the discharge pressure and the discharge flow rate are compared with design values after the stable flow after a lapse of a predetermined time to determine whether the measured values are normal and stored in the storage unit 8. (S13) and sends it to the control panel of the disaster prevention center.

Next, the recovery work is performed in the reverse order of the above (S14). That is, the manipulator 2 pushes the receiving body 65 of the receiving portion 62 in the direction opposite to the arrow A62 to close the fire hydrant valve 11, remove the water discharge connection port 4 from the maintenance valve 17 and return it to its original position. 1
0a is rotated in the closing direction to be closed. When pushing the receiving portion 62 with the manipulator 2, the tip 2a of the manipulator 2 is pressed.
A load sensor (not shown) is provided on the surface that abuts when pushed to, and whether or not the maximum value of the load is normal and the stroke of the engaging member 61 are measured by a stroke measuring device (not shown) provided in the manipulator 2. The CPU 6 determines whether the fire hydrant valve 11 is fully opened.

The stroke 2S of the receiving portion 62 is IT
It may be possible to determine whether or not the receiving portion 62 is normally in the fully open or fully closed state by taking an image with the V camera 3, performing image processing with the CPU 6 and comparing with the reference screen.

In order to confirm whether or not the fire hydrant valve 11 is fully closed due to the stop of the receiving portion 62, for example, a nozzle valve (not shown) may be provided between the pressure sensor 28 and the water discharge nozzle 30. . In this case, after closing the nozzle valve, the receiving portion 62 is closed to fill the space between the fire hydrant valve 11 and the nozzle valve, and then the pressure relief valve (not shown) provided between them is opened and closed once. Try to make it pressureless.

After waiting for a predetermined time, the pressure sensor 2
If 8 detects pressurization, the hydrant valve is not fully closed. Here, as described above, the nozzle valve, the receiving portion 62, and the pressure relief valve may be operated again so that no pressure is applied, and the apparatus may stand by. If the pressurization is detected again in the same manner as described above, the CPU 6 judges that the fire hydrant valve is not fully closed at this time, stores it in the storage unit 8, and sends it to the control panel of the disaster prevention center.

As shown in FIG. 12, the forward tilting door 10 is opened.
When closing a, the forward tilting door 10a is attached to the manipulator 2
The front tilting door 10a is lifted from the horizontal state shown by the solid line and pushed up to the vertical state shown by the chain line. Therefore, for example, three rectangular address plates are used as the upper plate 9
a, the middle plate 9b, and the outer plate 9c in this order are combined and formed into a substantially Z-shaped section (a pair of complex angles is 90 degrees and 135 degrees, for example).
On the upper surface of "a", a connecting portion 9d is connected to the tip of the manipulator 2 so that the connecting portion 9d can be elevated, and the connecting portion 9d and a gripping portion 9 composed of three address plates 9a, 9b, 9c are formed.

A required moment can be applied to the connecting portion 9d from the manipulator 2. A load sensor (not shown) is provided on the surface of the middle plate 9b and the outer plate 9c on the upper plate 9a side. Here, the upper plate 9a is applied to the end of the forward tilting door 10a on the side opposite to the rotating shaft 10p, that is, the open end (the front side edge in the fully open state), and the front surface of the forward tilting door 10a (the lower surface in the fully open state). ), The middle plate 9b is applied.
As it is, the manipulator 2 lifts the upper edge of the forward tilting door 10a as it is, while holding the moment in the connecting portion 9d so that the two address plates 9a and 9b are not separated from the forward tilting door 10a.

The load of the door 10a is applied to a load sensor (not shown) of the middle plate 9b, and the front tilting door 1 is provided immediately before the closing of the door.
The latch provided on the upper edge of 0a is the fire hydrant box 10.
An upward moment is applied to the grip portion 9 so that the grip portion 9 is locked in the latch hole, and the grip portion 9 is rotated upward while raising the upper plate 9a and the middle plate 9b toward the front, and the outer plate 9c is moved forward. Push it against the front of the tilting door 10a.

At this time, the resistance force of the door 10a is
Since it is measured by a load sensor (not shown) of c, the load can be known. The fully open limit switch is turned off when the forward tilting door 10a is separated from the fully opened state, and the closed limit switch is turned on when it is closed. For example, the fully closed limit switch is closed until the latch is completely locked or just before the locked state. This is an operation, and there is a change in the closing (from lifting to pushing) load of the forward tilting door 10a as the closing operation status, and the CPU 6 determines whether or not this maximum load is normal.

Further, the evaluation of the closing operation of the forward tilting door 10a is
Instead of measuring the closing load of the door, the determination may be made based on the time period during which the two switches operate. In this case, the closing force is adjusted so that it does not unnecessarily forcefully close, the closing speed does not exceed a predetermined value, for example, the manipulator 2 is closed at a constant speed, and the forward tilting door is closed. The CPU 6 determines whether or not the time when the fully open limit switch is turned off when leaving 10a from the fully open position and the time when the closed limit switch is turned on when it is closed are stored and whether the difference is normal or not. . This judgment (evaluation) is stored in the storage unit 8 and sent to the control panel of the disaster prevention center.

Next, maintenance and inspection of the fire extinguisher are performed. The manipulator 2 is extended, locked to the handle 151 of the fire extinguisher door 10b, and pulled forward to open the door (S15). At this time, a load sensor (not shown) provided in the manipulator 2 measures the load, and the measurement result is sent to the CPU 6. The CPU 6 compares the measured value with a reference value to determine whether or not the load required to open the fire extinguisher door 10b is normal (S16). This judgment (evaluation) is stored in the storage unit 8 and sent to the control panel of the disaster prevention center.

Further, the operation and the internal condition of the fire extinguisher door 10b are photographed by the ITV camera 3 and processed as moving images, and the door 1
0b opening speed, time required for opening, etc. are normal, whether there is harmful damage, deformation, corrosion, whether the fire extinguisher in the fire extinguisher door 10b is normally stored. Or, if the fire extinguisher is equipped with a pressure gauge, it is checked whether or not the normal pressure is indicated.

If necessary, extend the manipulator 2 and lift the fire extinguisher to check whether the weight is normal or not.
Is checked (S17). The tip of the manipulator 2 that lifts the fire extinguisher is, for example, L with a load sensor inside.
The hook is shaped like a letter and hangs so that the load sensor contacts the handle of the fire extinguisher. When the fire extinguisher is lifted as it is, the load sensor receives the weight of the fire extinguisher from the handle and the load is measured.

In the above, the ITV camera 3 zooms up, the pointer of the pressure gauge of the fire extinguisher is photographed, and the image is processed to determine whether it is normal or not. This judgment (evaluation) is stored in the storage unit 8 and sent to the control panel of the disaster prevention center.

Next, the recovery work is performed in the reverse order of the above (S18). That is, the fire extinguisher door 10 by the manipulator 2
Rotate b in the closing direction to close it.

Although the maintenance and inspection of the fire hydrant device is completed as described above, when further maintenance and inspection of the fire hydrant device is performed, the CPU
6 runs the robot 1 and heads to the next fire hydrant device (S19). The maintenance / inspection robot 1 is provided with a range finder, for example, a laser range finder, and the robot 1
And measure the distance between the fire hydrant box 10 and
It is also possible to determine whether the box 10 is tilted more than necessary with respect to the robot 1 or whether the box 10 is tilted with respect to the monitoring path 33. Further, this range finder can be used as a facing means.

If the robot 1 has a fire hydrant box 10
If it is observed that there is a tilt angle exceeding the allowable range, the CPU 6 adjusts the tilt angle by moving the traveling wheel 7 by changing the direction and height of the traveling wheel 7 so that the robot 1 faces the fire hydrant box 10. To do.

When an abnormality is found in the above inspection, the abnormality item is recorded or contacted to the disaster prevention center or the inspection result sheet is printed out and provided as information for repair.

In the above inspection, an abnormal condition is regarded as abnormal. However, even in the abnormal condition, for example, when the towing load for opening the door is 30 kg or more, or when it is at a level close to unusable such as not opening, the "obstacle" is given. It is also possible to divide the ranks of the judgment results into "unsuitable" when it can be used below, and to recognize the urgency of the response.

In the above embodiment, the maintenance / inspection robot 1 is activated by a remote instruction, and the maintenance / inspection robot 1 follows a program to perform maintenance / inspection work for one fire hydrant device, or maintenance / inspection work for all fire hydrant devices in the tunnel Tn. In order to execute a predetermined operation without obtaining a person's judgment, the CPU 6 obtains information necessary for the surrounding situation of the robot 1 from various sensors and devices, and the robot 1 moves for preparation for inspection and the like. This is an example of automatic control in which a predetermined operation is autonomously completed, such as a judgment on the occasion and evaluation / judgment of the measurement work and the inspection result.

However, a method different from the above in starting,
For example, it may be activated by an activation switch (not shown) of the robot body 20. Alternatively, after starting, after checking all the fire hydrant devices in the tunnel, the fire hydrant device may be automatically driven and returned to stop at a predetermined position so that the switch is automatically turned off. Also, a program may be set up so that this inspection is automatically performed on a regular basis when the day comes.

Further, as described above, the maintenance and inspection work of one fire hydrant device or all of the fire hydrant devices in the tunnel Tn is not performed by one instruction, but one instruction is given by one instruction from the control panel, for example. The maintenance inspection of only one inspection item may be automatically controlled. For example, when instructed to perform a predetermined operation, which is one inspection item of opening the fire hydrant door, information from various sensors and devices regarding the situation around the robot 1 is obtained based on this instruction. The robot 1 autonomously performs a door opening operation, and performs a predetermined operation such as the robot 1 determining whether the load or the door opening time is normal based on the information obtained at the door opening, for example, the door opening load or the door opening required time. Automatic control of completing may be performed.

Further, one operation of one inspection item may be automatically controlled. For example, a part of a predetermined operation in one inspection item, for example, "engaging the manipulator 2 with the receiving portion 48 of the fire hydrant door" is selected on the control panel by an instruction from the operator. When instructed, the CPU 6 executes this instruction by autonomous control (automatic control) while recognizing the surroundings by the ITV camera 3 and various sensors.

For example, first, the CPU 6 causes the bar code 14
Knowing the position and structure of the through hole 50 from the model number of the fire hydrant device obtained from, select the one whose tip of the manipulator 2 fits the receiving portion 48, and perform image processing of the image obtained from the ITV camera 3 through the through hole 50. Is recognized, the position of the through hole 50 is known from the stroke sensor of the anti-brake rod 36 and the image, and the tip 2a of the manipulator 2 is extended and inserted into the through hole 50.
When a is moved forward by a predetermined dimension, the load sensor 13 provided on the tip 2a comes into contact with the contact point, and stops when the contact is detected, and a signal indicating the completion of the instructed predetermined operation is returned.

Further, the case of automatic control of the robot 1 has been described above, but the case of remote control will be described below. For example, a manipulator 2 of the robot 1 is operated by an operator at a place away from the robot 1, for example, a control panel.
When the tip of the manipulator 2 is moved, various sensors and devices for recognizing the surroundings of the robot 1 are used to see the information for operating the robot 1, for example, the image information from the ITV camera 3, while checking the tip of the manipulator 2. The operator determines whether or not the manipulator 2 collides with something by operating, for example, an operation rod (not shown) on the side of the control panel made to have the same movement as the operation, You may make it perform the remote control which simply performs the operation | movement of the instruction | indication. Here, in order to make the CPU 6 recognize the difference between the remote control instruction and the automatic control instruction, an identification signal may be sent.

Further, for example, maintenance and inspection of one inspection item may be alternately executed by remote control and automatic control. For example, when the operator on the control panel selects the inspection item of opening the fire hydrant door, for example, the door 10a
The manipulator 2 is engaged with the receiving portion 48 of the operator by remote control with the operating rod while the operator views the image from the ITV camera 3 through a receiver (not shown).
For example, when the operator selects and instructs "start fire hydrant door towing" in "opening inspection of fire hydrant door", the CPU 6 causes the manipulator 2 to fully open the door 10a to measure the load for opening the door and measure the time required for opening the door. You may make it perform by automatic control including the pass / fail judgment of inspection.

In the above, the controller CP of the robot 1 is also used.
Although the U6 is provided in the robot 1, it may be provided outside the robot 1, for example, in a control panel.

A second embodiment of the present invention will be described with reference to FIG. The difference between this embodiment and the first embodiment (FIGS. 1 to 15) is that the tip portion 2a of the engaging member 47 fixed to the operating rod 44 is bent at a right angle toward the door body 40, The receiving portion 73 is located in the through hole 50, and the tip end surface 74 thereof is flush with the outer surface 40a of the door plate 40.
In this embodiment, the receiving portion 73 has a tip portion 2 of the manipulator 2.
When a is engaged and pressed to open the fire hydrant valve 11, the manipulator 2 is pushed in a small amount and can be easily removed. As a method for facilitating the removal of the distal end portion 2a of the manipulator 2, a joint may be provided and deformed in addition to the amount of pushing, for example, a joint that is linear in the pressing direction and deforms in the pulling direction. If multiple joints are provided and the joint spacing is shorter than the width of the through hole 50, it is easy to pull out.

[0102]

The present invention is provided with a latch mechanism for maintaining the closed state of the door body, a handle for releasing the latch mechanism by a user's operation, and a receiving portion for an operating member in addition to the handle. Since the engaging member for releasing the latch mechanism is provided, it is easy to mechanically open the door when performing automatic inspection using a maintenance robot or the like.

In the engaging member of the present invention, the operating member is engaged with the receiving portion through the through hole provided in the door body, so that it is possible to prevent the user from mistakenly using the mechanical engaging member. .

According to the present invention, the through hole provided in the door is
Since it is formed smaller than a human finger, it is possible to prevent the engaging member from being inadvertently operated.

According to the present invention, when the handle has a stroke for sliding the latch of the latch mechanism, the stroke of the engaging member is made larger than the stroke of the handle, and at the same time, the operating force of the engaging member is made larger than that of the handle. Since it is also small, it is possible to facilitate mechanical operation.

According to the present invention, there is provided an opening / closing lever for opening / closing the fire hydrant valve, a receiving portion for the operating member in addition to the opening / closing lever, and an engaging member for opening / closing the fire hydrant valve in conjunction therewith. , It is easy to mechanically open the fire hydrant valve during automatic inspection using a maintenance robot.

Since the opening / closing lever of the present invention is interlocked with the fire hydrant valve by the wire and the engaging member is directly connected to the wire, it can be easily interlocked.

According to the present invention, the stroke of the engaging member is made larger than the stroke of the wire by the opening / closing lever, and at the same time, the operating force of the engaging member is made smaller than that of the opening / closing lever. It can be done easily.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of the present invention.

FIG. 2 is a vertical sectional view.

3 is an enlarged plan view of the barcode and sensor of FIG.

FIG. 4 is an enlarged cross-sectional view of the handle portion of FIG. 2, FIG. 4 (A) shows a state when the door is closed, and FIG. 4 (B) shows a state when the latch release mechanism starts releasing.

FIG. 5 is a vertical cross-sectional view when a front tilting door is opened.

FIG. 6 is a cross-sectional view of the fire hydrant device when the front tilting door is opened.

FIG. 7 is a vertical cross-sectional view showing a state in which a water discharge inspection device is connected to a maintenance valve.

8 is a vertical cross-sectional view showing another state of FIG.

FIG. 9 is a perspective view of the maintenance / inspection robot from the rear side.

FIG. 10 is a part of a flow chart of maintenance and inspection.

FIG. 11 is a part following the maintenance and inspection flowchart of FIG. 10;

FIG. 12 is a side view showing a state in which the forward tilting door is closed.

FIG. 13 is a perspective view showing an opening / closing mechanism of a fire hydrant valve.

FIG. 14 is a diagram showing a part of a plan view of the opening / closing mechanism of the fire hydrant valve when the door is opened. .

FIG. 15 is a side view of FIG.

16 is an enlarged cross-sectional view of a handle portion showing a second embodiment of the present invention, FIG. 16 (A) shows a state when the door is closed, and FIG.
(B) shows the state when the latch is released.

[Explanation of symbols]

1 Maintenance robot 2 manipulator 10 fire hydrant box 10a forward tilting door 11 Fire hydrant valve 12 Open / close lever 15 Handle 17 Maintenance valve 27 Water discharge inspection device 47 Engagement member 48 Receiver 51 Latch mechanism 61 Connecting member 62 Receiver S fire hydrant device

Claims (9)

[Claims] 1. A fire hydrant device in which a fire hose having a nozzle connected to its tip is housed in a fire hydrant box, and a door is disposed in front of the fire hydrant box; the closed state of the door. A latch mechanism for maintaining the latch mechanism, a handle for releasing the latch mechanism by a user's operation, a receiving portion for an operating member separately from the handle, and an engaging member for releasing the latch mechanism. Fire hydrant device characterized in that. 2. The fire hydrant apparatus according to claim 1, wherein the engagement member has an operation member engaged with the receiving portion through a through hole provided in the door body. 3. The fire hydrant apparatus according to claim 1, wherein the through hole provided in the door body is formed smaller than a human finger. 4. When the handle has a stroke for sliding the latch of the latch mechanism, the stroke of the engaging member is made larger than the stroke of the handle and the operating force of the engaging member is made smaller than that of the handle. The fire hydrant device according to claim 1, wherein 5. When the handle has a stroke for sliding the latch of the latch mechanism, the operating force of the engaging member is made larger than the operating force of the handle, and at the same time, the stroke of the engaging member is made larger than that of the handle. The fire hydrant device according to claim 1, wherein the fire hydrant device is small. 6. A fire hydrant device in which a fire hydrant valve connected to a fire hose having a nozzle connected to its tip is housed in a fire hydrant box; an open / close lever for opening / closing the fire hydrant valve; With the receiving part of the operating member,
A fire hydrant device, comprising: an engaging member that opens and closes the fire hydrant valve in conjunction with each other. 7. The fire hydrant apparatus according to claim 6, wherein the opening / closing lever is interlocked with the fire hydrant valve by a wire, and the engaging member is connected to the wire. 8. The stroke of the engaging member is made larger than the stroke of the wire by the opening / closing lever, and at the same time, the operating force of the engaging member is made smaller than that of the opening / closing lever. Fire hydrant device. 9. Compared with the operating force of the wire by the opening and closing lever,
7. The fire hydrant apparatus according to claim 6, wherein the operation force of the engaging member is increased and the stroke of the engaging member is made smaller than that of the opening / closing lever.