JP2596519B2 - Automatic elevating sprinkler for disaster prevention - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for spraying water to extinguish a fire in the event of a fire. The present invention relates to a water sprinkling device for the purpose of extinguishing fire, which sprays water toward the fire.

[0002]

2. Description of the Related Art In such a watering apparatus, a box-shaped concrete body is generally buried under the ground surface to prevent the water discharge nozzle at the tip of the watering gun from being rusted or clogged with dirt or dust. It is housed in a pit with a lid, but the water spray direction of the spray gun is set in advance so as to be optimal for the target building, etc., and the lid on the ground surface is hinged and installed, and the fire The lid is pushed up by water discharged from the water discharge nozzle at the time of occurrence, inverted and released to perform digestion work.

Further, in Japanese Utility Model Publication No. 58-26680 filed by the same applicant as the present invention, as shown in FIGS. 8 and 9, a concrete frame 7 having a depth H ₁ is embedded below the ground surfaces G and L. And pits 6 and water pipe 1
, The piston in the vertical pipe is moved up and down by simultaneously supplying water to the bypass pipe 5, and at the same time, the slide pipe, the head 8, and the push-up rod 10 are moved up integrally with the piston, and the ground surface G of the pid 6 is L, the hinged lids 13 provided at the respective edges are pivotally opened using the hinges 14 provided at the respective edges, and the lids 13 are inverted with the hooks 10a provided at the tips of the push-up rods 10 and slide pipes are provided. The lower end opening reaches the inside of the sprinkler gun body and communicates with the water supply pipe 1 to start water discharge. Further, the upward movement of the piston makes its upper surface abut against the contact surface of the upper body, where the upward movement is regulated, and A configuration in which water having a flow rate of?

[0004]

SUMMARY OF THE INVENTION Among the above two examples,
In the former, the water is directly collided with the lid, and the lid is inverted by the impact force. Therefore, if the water discharge pressure is low, the lid cannot be inverted. Therefore, a high water discharge pressure is required. For this reason, when the lid is turned over, the lid is turned vigorously, which may cause deformation such as bending or damage such as cracks. However, there is a disadvantage that it takes time and effort to return to the original state.

As shown in FIGS. 8 and 9, the latter is inverted by the hook 10a at the tip of the push-up rod 10, so that the lid is not impacted as in the former, and there is a concern that the lid may be damaged. However, when the water is stopped halfway without inverting, when the horizontal water discharge angle is Θ, a part of the water discharge hits the lid and hinders water discharge. Therefore, in order to obtain a predetermined water discharge angle, it is necessary to turn the lid upside down and turn over.

[0006] In order to do this, as the ascending movement distance of the push-up bar 10, the distance c from the point a to the ground surface G, L when the pit is stored in the pit, and the ground surface G, L
The sum of the distance f from the point b to the point b where the lid rises vertically and the distance g from the point b to the point c where the lid can be inverted, that is, e + f + g is required for the total ascending movement distance h ₀ of the watering gun. After all, in order to invert, it is necessary to have an extra distance g.

[0007] Because of the size of g, the total length H _{0 of the} watering gun is long, and therefore the depth H of the pit for accommodating the same is large.
_One needed to be too deep. Deep pits require time and money for digging work and pipe burial work for formation,
There was a disadvantage that the cost was high. An object of the present invention is to provide an automatic elevating watering apparatus for disaster prevention which has solved the above-mentioned drawbacks.

[0008]

SUMMARY OF THE INVENTION According to the present invention, there is provided, according to the present invention, a sprinkler equipped with a head having a spout nozzle at its upper end, and the sprinkler is moved upward or downward by applying or removing water pressure. A watering gun body having means for lowering the water, a first bearing extending from the head, a pit formed below the ground surface, opening upward, and storing the watering gun, and an upper opening surface of the pit Opening and closing with respect to an opening formed in a flat plate that covers the opening, one edge of which is hinged to the flat plate with a hinge, and a second opening attached to the back surface of the lid.
And the first and second bearings, which are rotatably supported by the first and second bearings, respectively, and the first and second bearings are coupled to each other. The other end is provided with a push-up shaft slidably coupled to both support bases at the other end, and the lid is turned around the hinge with the push-up shaft as the watering gun is moved upward. This is solved by moving the lid to a predetermined angle and returning the lid to its original position with the downward movement of the water spray gun.

[0009] Further, in addition to the above-mentioned object, the present invention is configured such that a slidable one end of the push-up shaft is configured to be detachable from the first or second support table, and the cover is capable of being turned over. Will solve it.

[0010]

The head of the water spray gun body, which has means for moving up or down by applying or removing water pressure, with the head having the head having the water discharge nozzle at the upper end, and the flat plate opening on the ground surface of the pit Cover, open the back of the one-sided lid that is hinged on the edge, start each bearing, support base, push-up shaft that combines the two, the lid to a predetermined angle with the upward movement of the watering gun Rotate so that there is no hindrance to water discharge. Since the lid is not turned upside down, the lifting distance can be short, the pit depth and the length of the watering gun are short, and the cost is low.

By adjusting the mounting length and position of the push-up shaft, the turning angle and timing of the lid can also be adjusted. In addition, the push-up shaft moves down together with the water discharge gun that performs processing by pressure removal at the end of water discharge, and the lid automatically returns, so that no manual operation is required. The push-up shaft, which can be detached from one of the supports, enables the lid to be turned over and overturned, and the inspection inside the pit is easy.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 is a side cross-sectional view in a water-discharged state, FIG. 2 is a side cross-sectional view in a state in which a lid is closed, FIG. 3 is a side cross-sectional view in a state in which the lid is being opened, and FIG. The same parts as those in the conventional example are denoted by the same reference numerals.

The concrete frame 3 under the ground surfaces G and L
7, the concrete skeleton 37 is in the form of a substantially rectangular box with a vertical dimension H ₃ and a bottom, and the inside of the box is a watering gun storage pit 36. As shown in the top view of FIG. 5, a flat plate 44 is attached to and covers the open upper surface of the concrete skeleton 37.
Is formed at the center thereof with a one-sided lid 26 pivotally supported by a hinge 27.

FIG. 2 is a side sectional view showing the state in which the lid is closed as described above. Reference numeral 1 denotes a water supply pipe through which water for fire extinguishing is supplied, which is provided through the side wall of the concrete skeleton 37.
2 is an automatic exhaust valve, and 3 and 3 'are automatic drains (automatic drain valves). Reference numeral 4 denotes a water spray gun body in which a water gun equipped with a vertical pipe moves up and down, 5 denotes a bypass pipe, 8 denotes a head at the tip of the water gun, and 9 denotes a water discharge nozzle at the tip of the head.

6 and 7 show a main part of the opening / closing mechanism of the lid 26 as a side view and a front view. A first bearing 15 is fixedly attached to the extension of the head 8 of the water spray gun. Reference numeral 17 denotes a columnar first support base, which has a parallel surface portion at one end and a shaft hole formed in the surface, and which is rotatable by a shaft 16 fitted into the first bearing 15. Supported. Reference numeral 23 denotes a split pin for preventing the shaft 16 from coming off.

Reference numeral 19 denotes a cylindrical push-up shaft, which is formed with a male screw at one end, and is screwed into a screw hole formed at the end of the first support 17 opposite to the above. After adjusting the length, it is fixed with a lock nut 18.

On the other hand, a second bearing 22 is fixedly attached to the back surface of the lid 26. Reference numeral 20 denotes a cylindrical second support base, which has a shaft hole formed at one end, and is rotatably supported by a shaft 21 inserted into the second bearing 22. Reference numeral 25 denotes a nut for preventing the shaft 21 from coming off, and reference numeral 24 denotes a flat washer.

The other end 19a of the push-up shaft 19
Is slidably fitted in an axial hole 20a provided at an end of the second support base 20 opposite to the above. As described above, one end of the push-up shaft is screwed into the first support base 17, and the screwing depth is such that the tip of the end portion 19a is in the storage state shown in FIG. To a length that almost touches the bottom of the 20 axial holes,
The screwing amount is adjusted by adjusting the screwing amount.

The operation of the present embodiment having the above configuration is as follows. When the water supply to the water supply pipe 1 is started due to the fire, the water enters the water spray gun body, flows into the lower surface of the piston (not shown) in the vertical pipe of the water spray gun through the bypass pipe 5, and is integrated with the piston and the piston by water pressure. The slide pipe and the head 8 are pushed down and moved upward.

Along with the movement, the first bearing 15 fixed to the portion where the head 8 is extended also moves upward at the same time, so that the first support 17, the push-up shaft 19, the second support 20, and the second support
The lid 26 starts to rotate and open with the hinge 27 as an axis via the bearing 22.

In FIG. 2 in the housed state, the point K at the tip of the nozzle 9, which is located at a point lower than the ground surface G, L by the distance e, is moved to G, L, ie, o in FIG. Reach the point. In this state, the lower opening (not shown) of the slide pipe is not in communication with the inner wall of the watering gun body 4, and no water is discharged. However, when the upward movement further proceeds, the lower opening of the slide pipe reaches a portion in the watering gun body that communicates with the water supply pipe 1 and communicates therewith, and water is discharged from the water discharge nozzle 9.

Although not shown, the upper limit of the upward movement is restricted by the upper surface of the piston abutting against the contact surface of the upper body. The position is a position where the point K at the tip of the nozzle is raised by f from the G and L planes in FIG. In this state, a predetermined amount of water is discharged, and fire extinguishing is started.

In the upper limit shown in FIG. 1, the first bearing 15, the first support 17,
Through the push-up shaft 19, the second support base 20, and the second bearing 22, the rotation of the lid 26 about the hinge 27 ends, and the angle between the lid 26 and the ground surfaces G, L is reduced. The relational dimensions of each part are set so as to stop at α. In addition, regarding the operation during the upward movement, the first bearing 15 and the first support base 1
7 and the relationship between the second bearing 22 and the second support base 20 are rotatably supported by the shafts 16 and 21, respectively, so that there is no hindrance to the above operation. .

The water discharge angle of the nozzle 9 is set to the angle α ₀ with the ground surfaces G and L. And, as described above, the angle between the lid 26 and the ground surfaces G and L is α,
Since the position of the second bearing 22 with respect to the lid 26 is set so that α ₀ <α, in other words, the distance from the hinge 27 to the shaft 21 becomes 1 in FIG. The water does not collide with the lid 26. Accordingly, water can be discharged to the disaster prevention target 50 at the angle θ shown in the top view of FIG.

After the end of water discharge, the pressure in the water supply pipe 1 decreases, so that the automatic drains 3 and 3 'are automatically opened, and the pressure in the bypass pipe 5 and the lower surface of the piston, and the pressure in the bottom in the fixed vertical pipe are sent to the outside. discharge. When the pressure on the lower surface of the piston is released to the outside, the slide pipe moves downward and simultaneously processes the head 8, so that the lid 26 is moved through the first support 17, the push-up shaft 19, and the second support 20. Is rotated by its own weight, and reaches a state where the watering gun has been processed to its original position.
Also returns to a plane parallel to the ground surfaces G and L and stops.

A handle 28 is attached to the upper surface of the lid 26 at the end opposite to the hinge 27. And push up axis 1
The one end 19a of the base 9 and the hole 20a of the second support base 20 have a slidable fitting relationship, and the fitting is set loose. Therefore, the water discharge gun is stored and the lid 26 is placed on the ground surface G, L
From the parallel state, grasp the handle 28 and pull it up.
Is reversed, the second support 20
Can be removed and the lid 26 can be turned over. This state is shown in FIG. In this state, the opening of the flat plate 44 can be fully used, so that inspection and maintenance of the inside can be easily performed. After the work is completed, the end portion 19a of the push-up shaft 19 is inserted into the hole 20a of the support base 20 while rotating the lid 26 in the original position direction, and the lid 26 is further rotated and closed while holding the handle 28. Good.

The opening angle and opening timing of the lid are changed by changing the position of the second bearing 22 fixed to the lid 26, that is, by changing the dimension 1, and changing the screwing amount of the push-up shaft 19 as described above. It is adjustable and can be adjusted in consideration of the timing of water discharge start and the like.

Further, depending on circumstances, the direction of connection between the push-up shaft 19 and the two supports is reversed from that of the above-described embodiment, and the first support 17 is detachable by fitting. There is no problem even if the length of the support base can be adjusted by screws.

[0029]

As described above, according to the present invention, an automatic elevation type watering device for opening a pit lid under the ground surface in which a watering gun is stored by utilizing upward movement of a watering gun by water pressure. In, the lid is one-sided, the bearing extending to the head part of the watering gun, and the bearing provided on the back of the lid are connected by a push-up shaft, so that the watering gun is opened to a predetermined angle by upward movement, The opening angle of the lid can be made large with a small ascending movement distance, so that the total length of the watering gun can be shortened, and the cost can be reduced. If conventional example comparison of FIG. 9, it becomes unnecessary dimension g, thus increasing the movement required distance h ₁ watering gun e + f, and the corner at about half the conventional ratio, overall length so that requires only 60%.

Further, since the total length of the watering gun can be shortened, the depth of the pit for accommodating the watering gun can be reduced. Therefore, the digging work and the burying work of the pipe at the time of forming the pit become easy, and the cost of the construction is reduced.

Furthermore, since the lid is not turned upside down as in the prior art, the lid can be used for a long time without causing deformation, cracking or breakage. What is restored to the position automatically returns to the original position, so that the restoration work becomes unnecessary.

Further, since the bearing provided on the back surface of the lid and the push-up shaft are configured to be detachable, the internal inspection and maintenance in the pit can be easily performed without any trouble.

[Brief description of the drawings]

FIG. 1 is a side sectional view (water discharge state) of an embodiment of the present invention.

FIG. 2 is a side sectional view of one embodiment of the present invention (with a lid closed).
It is.

FIG. 3 is a side sectional view of one embodiment of the present invention (during opening of a lid).
It is.

FIG. 4 is a side cross-sectional view of one embodiment of the present invention (cover inverted state).
It is.

FIG. 5 is a top view of one embodiment of the present invention.

FIG. 6 is a side view of a lid opening / closing mechanism according to one embodiment of the present invention.

FIG. 7 is a front view of a lid opening / closing mechanism according to one embodiment of the present invention.

FIG. 8 is a conventional top view.

FIG. 9 is a side sectional view of a conventional example.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 water supply pipe 1 automatic exhaust valve 3, 3 'auto drain 4 water spray gun body 5 bypass pipe 8 water spray gun head 9 water discharge nozzle 15 first bearing 16 shaft 17 first support stand 19 push-up shaft 20 second support stand 21 Shaft 22 Second bearing 26 Lid 27 Hinge 28 Handle 36 Pit 37 Concrete frame 44 Flat plate e Distance from tip of water discharge nozzle to lid in stored state f Distance moved from ground surface G, L at water nozzle tip to water discharge position g The upward moving distance for turning over and turning over the conventional lid h _{0 The} total upward moving distance required for the conventional watering gun

Claims (2)

(57) [Claims] 1. A water spray gun body equipped with a water spray gun having a head having a water discharge nozzle at an upper end, and a means for moving the water gun up or down by applying or removing water pressure; and An extended first bearing, a pit formed below the ground surface, opening upward, and opening and closing a pit for accommodating the watering gun, and an opening formed in a flat plate covering an upper opening surface of the pit; A one-sided lid having one edge hinged to the flat plate with a hinge, a second bearing attached to the back surface of the lid, and a first and second bearing rotatably supported by the first and second bearings, respectively. The first and second support bases are connected to the first and second support bases, and one end thereof is adjustable in expansion and contraction, and the other end is slidably connected to the two support bases. A shaft, with the upward movement of the watering gun as a medium To, the lid is opened to a predetermined angle by rotating the hinge as an axis, the cover with the downward movement of the water spray gun disaster for automatic elevating sprinkler apparatus characterized by returning to its original position. 2. The disaster prevention system according to claim 1, wherein a slidable end of the push-up shaft is configured to be detachable from the first or second support base, and the lid is reversible. Automatic elevating watering gun.