JP2017018635A - Fire hydrant device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire hydrant device which can release an on-off valve when remote opening/closing means is out of order.SOLUTION: An on-off valve 31 is fixed to an opening/closing shaft 35, has an opening/closing arm 36 extending in a radial direction of the opening/closing shaft 35, the remote opening/closing means is arranged in a passive part 46 having a passive shaft 48 and a hydrant body, includes an operation part generating turning torque for opening/closing the on-off valve 31 and a transmission part transmitting the turning torque to the passive shaft 48. The passive part 46 is installed to a hydrant valve unit 30 by connecting the passive shaft 48 to the opening/closing shaft 35 so that the turning torque can be transmitted.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a fire hydrant device that is installed in a tunnel such as a highway, for example, and extinguishes fire by pulling out a fire hose inside a main body in the event of a fire.

  For example, in a conventional fire hydrant device described in Patent Document 1, a water discharge facility is housed in a fire hydrant box installed in a side wall recess of a tunnel, and is branched by a branch pipe from a water distribution main pipe laid in a side groove formed in the tunnel. Fire water for fire extinguishing is supplied to the hose of the water discharge facility through the connecting pipe, the on-off valve and the supply pipe. And the on-off valve is housed in a side gutter where the water main is laid away from the fire hydrant box, making direct operation difficult, so a remote opening / closing means for opening and closing near the fire hydrant box is provided. It was done. The remote opening / closing means includes an operation unit provided on the back surface of the fire hydrant door, a passive unit that rotates an opening / closing shaft of the on-off valve, and a transmission unit that transmits the movement of the operation unit to the passive unit. To open and close the on-off valve.

JP 2010-227456 A

  In a conventional fire hydrant device, the passive pulley is fixed to the opening / closing shaft of the on-off valve, the inner wire of the control cable is wrapped around the passive pulley, and the inner wire is fixed to the passive pulley by the wire fixing bracket. The passive part of the means was attached to the opening and closing shaft. However, the attachment of the passive part to the opening / closing shaft is a work in a narrow space in the side groove, and there is a problem that the installation workability is lowered. Furthermore, it is necessary to adjust the angle of the passive pulley and fix it to the open / close shaft so that the open position and close position of the operation unit coincide with the open position and close position of the open / close valve. Thus, there was a problem that the installation workability was lowered.

  This invention was made in order to solve said subject, and it aims at obtaining the fire hydrant apparatus which can open an on-off valve at the time of failure of a remote on-off means.

  A fire hydrant device according to the present invention includes a fire hydrant body in which a fire hose is housed, a fire hydrant valve unit incorporating an on-off valve, a fire water supply pipe connecting the fire hydrant valve unit and the fire hose, and Remote open / close means for opening / closing the open / close valve, the open / close valve having an open / close arm fixed to the open / close shaft and extending in a radial direction of the open / close shaft, and the remote open / close means having a passive shaft A passive unit, an operation unit that is disposed in the fire hydrant body and generates a rotation torque for opening and closing the on-off valve, and a transmission unit that transmits the rotation torque to the passive shaft. A passive part is attached to the fire hydrant valve unit, coupling the passive shaft to the opening / closing shaft so as to transmit the rotational torque.

  According to the present invention, the on-off valve has the on-off arm that is fixed to the on-off shaft and extends in the radial direction of the on-off shaft. Can be released.

It is a front view which shows the fire hydrant apparatus which concerns on one embodiment of this invention. It is a sectional side view which shows the installation state of the fire hydrant apparatus which concerns on one embodiment of this invention. It is a front view which shows the fire hydrant door open state of the fire hydrant apparatus which concerns on one embodiment of this invention. It is a top view which shows the fire hydrant valve unit in the fire hydrant apparatus which concerns on one embodiment of this invention. It is a top view which shows the operation part which comprises the remote opening-closing means in the fire hydrant apparatus which concerns on one embodiment of this invention. It is a figure explaining the passive part which comprises the remote opening-closing means in the fire hydrant apparatus which concerns on one embodiment of this invention. It is principal part sectional drawing explaining the structure of the tension adjusting means of the inner wire in the fire hydrant apparatus which concerns on one embodiment of this invention. It is sectional drawing which shows the mounting state of the drip-proof cover in the fire hydrant apparatus which concerns on one embodiment of this invention. It is a figure explaining the attachment method of the passive part of the remote opening-and-closing means in the fire hydrant apparatus which concerns on one embodiment of this invention. It is a figure explaining the attachment method of the passive part of the remote opening-and-closing means in the fire hydrant apparatus which concerns on one embodiment of this invention. It is a figure explaining the attachment method of the passive part of the remote opening-and-closing means in the fire hydrant apparatus which concerns on one embodiment of this invention.

  Hereinafter, preferred embodiments of the fire hydrant device of the present invention will be described with reference to the drawings.

  1 is a front view showing a fire hydrant device according to an embodiment of the present invention, FIG. 2 is a side sectional view showing an installation state of the fire hydrant device according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. FIG. 4 is a top view showing a fire hydrant valve unit in a fire hydrant apparatus according to an embodiment of the present invention, and FIG. 5 is an embodiment of the present invention. FIG. 6 is a diagram for explaining a passive unit constituting the remote opening / closing means in the fire hydrant device according to one embodiment of the present invention. FIG. 6A is a top view, and FIG. 6B is a cross-sectional view. FIG. 7 is a cross-sectional view of the main part for explaining the configuration of the tension adjusting means of the inner wire in the fire hydrant device according to the embodiment of the present invention, and FIG. It is sectional drawing which shows a mounting state. 5 and 6 show a state in which the box cover is removed for convenience of explanation.

  1 to 3, a concrete casing 1 of a tunnel is constructed in a bowl shape with respect to a lane (not shown), and a supervisor passage 2 is constructed at a predetermined height on one of the shoulders. A duct 3 is formed in the lower part of the supervisor passage 2, and a distribution main pipe 5, a branch pipe 6 branched from the distribution main pipe 5, a connection pipe 7 coupled to the branch pipe 6, and a stop connected to the connection pipe 7. A water valve 8 and the like are laid. The fire hydrant device 10 includes a fire hydrant main body 11 installed in a box opening 4 recessed in a wall surface that can be operated from a supervisory passage 2 of a concrete housing 1 of a tunnel or a lane (not shown), and a duct 3. A fire hydrant valve unit 30 connected to the branch pipe 6 branched from the water distribution main pipe 5 through the connection pipe 7 and the water stop valve 8; remote opening and closing means 40 for opening and closing the fire hydrant valve unit 30 from the fire hydrant body 11 side; Is provided.

  The fire hydrant main body 11 includes a housing including a box 12 made in a rectangular parallelepiped box shape that opens to the front, and a front panel 13 that covers the front of the box 12. Inside the housing, there are a fire hose 15 having a fire extinguishing nozzle 15a at the tip, a hose bucket 16 that houses the fire hose 15 in an internally wound manner, a fire extinguisher 17, a splicing member 24, various electric devices (not shown). ) Etc. are stored. The box 12 is fixed to the base frame 14 fixed to the floor surface of the box opener 4 by bolting or the like.

  Here, the fire extinguisher 17 is housed in the left space inside the housing, and the remaining space is the fire hose housing space. The joint member 24 is disposed on the right side of the hose bucket 16 in the fire hose storage space, to which the fire hose 15 is connected and a connection hose 25 that is a supply pipe is connected. The connection hose 25 is a hose made of the same material as the fire extinguishing hose 15, that is, a shape-retaining rubber pulling hose, and connects the joint portion 34 (FIG. 4) of the fire hydrant valve unit 30 and the joint member 24. Fire water is supplied to the fire hose 15.

  The front panel 13 is provided with a horizontally long opening 13a facing the fire hose storage space and a vertically long opening 13b facing the fire extinguisher storage space. A forward-type fire hydrant door 18 that falls forward is attached to the horizontally long opening 13a, and a horizontally-open fire extinguisher door 20 is attached to the vertically long opening 13b. As shown in FIG. 3, the horizontally long opening 13 a is formed so that the upper end of the fire hydrant door 18 is positioned at substantially the same height as the lower end of the front panel 13 when the hydrant door 18 is opened. Is provided. In addition, although the front panel 13 is comprised with one panel, you may be comprised with two panels divided | segmented into right and left, for example.

  The fire hydrant door 18 is connected to the front panel 13 so that the lower end of the fire hydrant door 18 is connected by a hinge and the horizontally long opening 13a can be opened and closed. A fire-extinguishing nozzle 15 a and an operation unit 41 of a remote opening / closing means 40 described later are attached to the back surface of the fire hydrant door 18. The fire hydrant door 18 is maintained in a closed state by the magnetic force of the magnet, for example, by pulling the handle 19 toward the front, the coupling by the magnetic force of the magnet is released, and the opening 13a is swung down by rotating in the forward tilt direction. Open.

The fire extinguisher door 20 is attached to the front panel 13 such that the left end is connected with a hinge and the vertically long opening 13b can be opened. For example, the fire extinguisher door 20 is kept closed by the magnetic force of the magnet. By pulling the handle 21 forward, the coupling by the magnetic force of the magnet is released, the opening 13b is opened, and the user extinguishes the fire extinguisher 17. Fire extinguishing activities are possible with
An indicator lamp 22, a transmitter 23, and the like are attached between the fire hydrant door 18 and the fire extinguisher door 20.

  As shown in FIG. 4, the fire hydrant valve unit 30 is disposed on the secondary side of the open / close valve 31, the automatic pressure regulating valve 32 that supplies fire water with a predetermined pressure, and the open / close valve 31. The automatic drain valve 33 which is arrange | positioned at the next side and discharges the non-pressurized fire extinguishing water at the time of non-water discharge, and the joint part 34 to which the connection hose 25 is connected are provided. As shown in FIG. 2, the automatic drain valve 33 is disposed below the automatic pressure regulating valve 32. Further, the open / close arm 36 is fixed to the open / close shaft 35 of the open / close valve 31 so as to be able to rotate with the open / close shaft 35. The open / close arm 36 extends in the radial direction from the open / close shaft 35, and a connection hole 37 into which a connection pin 53 as an example of a connection member to be described later is fitted is formed on the distal end side of the open / close arm 36 (FIGS. 9 to 9). (See FIG. 11). The fire hydrant valve unit 30 is connected to the branch pipe 6 through the water stop valve 8 and the connection pipe 7 in the open / close valve 31, and is disposed at the branch portion of the water distribution main pipe 5.

  The remote opening / closing means 40 includes an operation unit 41 disposed on the back surface of the fire hydrant door 18, a passive unit 46 that rotates the opening / closing shaft 35 of the on-off valve 31, and a transmission that transmits the movement of the operation unit 41 to the passive unit 46. Unit 54.

  As shown in FIG. 5, the operation unit 41 pivotally supports the operation shaft 43 on a box 42 that is an operation side housing, fixes the operation side pulley 44 to the operation shaft 43, and opens and closes the opening / closing lever 45. The operation side pulley 44 can be rotated around the operation shaft 43 by operating the opening / closing lever 45. The opening / closing lever 45 is configured to be rotatable in parallel with the door surface of the fire hydrant door 18.

  As shown in FIG. 6, the passive portion 46 pivotally supports the passive shaft 48 in a penetrating manner on the bottom plate of the box 47 that is the passive housing, and the passive pulley 49 is connected to the end of the passive shaft 48 in the box 47. The power transmission arm 50 is fixed to the protrusion of the passive shaft 48 from the box 47, and the passive pulley 49 and the power transmission arm 50 are configured to be able to rotate with the passive shaft 48. The fitting recess 51 is recessed at the axial center position of the projecting end of the passive shaft 48 from the box 47. The power transmission arm 50 extends from the passive shaft 48 in the radial direction, and a connection hole 52 into which the connection pin 53 is fitted is formed on the distal end side of the power transmission arm 50.

  The transmission unit 54 includes an outer wire 55 and an inner wire 56 passed through the outer wire 55. The outer wire 55 is attached on the operation unit 41 side by sandwiching the side wall of the box 42 with nuts 58 and 59 screwed to a male screw portion 57 provided at one end portion of the outer wire 55, and on the passive portion 46 side. The side wall of the box 47 is sandwiched and attached by nuts 61 and 62 screwed to a male screw portion 60 provided at the other end portion of the outer wire 55. The inner wire 56 is passed through the outer wire 55 and is configured to be endless. On the operation unit 41 side, the inner wire 56 is wound around the operation side pulley 44 and fixed to the operation side pulley 44, and on the passive unit 46 side. It is wound around the passive pulley 49 and fixed to the passive pulley 49. As a result, the looseness of the inner wire 56 is restricted by the outer wire 55, and the inner wire 56 is stretched over the operation side pulley 44 and the passive side pulley 49, and the rotational torque of the operation side pulley 44 is transmitted to the passive side pulley 49.

  As shown in FIG. 7, the outer wire 55 is configured by connecting two outer wire pieces with a turnbuckle 63. The turnbuckle 63 is an example of tension adjusting means for the inner wire 56, and includes a hollow body 64 having female screw portions formed at both ends, and hollow bolts 65a and 65b fixed to respective end portions of the outer wire piece. The bolts 65a and 65b are screwed onto the female threaded portions at both ends of the body portion 64. The inner wire 56 passes through the body 64 and the bolts 65a and 65b. One of the female thread portions at both ends of the body portion 64 is a right-hand thread and the other is a left-hand thread. The length of the outer wire 55 is adjusted by changing the rotation direction of the body portion 64. Thereby, the arrangement | positioning path | route length of the outer wire 55 is adjusted, and the tension | tensile_strength of the inner wire 56 is adjusted. Further, nuts 66 and 67 are screwed onto the bolts 65a and 65b, and the position of the barrel portion 64 is fixed by sandwiching the barrel portion 64 with the nuts 66 and 67, so that the outer wire 55 is disposed. The length is maintained.

  The rust preventive cover 68 is made of, for example, an ethylene propylene rubber (EPDM) in a bellows shape, and is attached to the outer wire 55 so as to cover the turnbuckle 63. The anticorrosion cover 68 is normally stretched at the bellows portion, covers the turnbuckle 63, elastically contacts the outer wire pieces at both ends, and travels through the outer wire 55. The entry to the turnbuckle 63 and the arrival of water or the like to the turnbuckle 63 are prevented. Further, when the tension of the inner wire 56 is adjusted, the rust preventive cover 68 contracts the bellows portion to expose the turnbuckle 63 and enables the inner wire 56 to adjust the tension.

  As shown in FIG. 8, the drip-proof cover 69 is made of, for example, ethylene propylene rubber (EPDM) in a bowl shape having a through hole at the center of the bottom, and is attached to the through hole through the outer wire 55 with the opening facing downward. ing. The drip-proof cover 69 elastically contacts the outer peripheral surface of the inner periphery of the through hole with the outer wire 55 and prevents water or the like transmitted through the outer wire 55 from further descending through the outer wire 55.

  As shown in FIG. 3, the remote opening / closing means 40 configured in this way has the operation unit 41 fixed to the back surface of the fire hydrant door 18 with the operation unit 41 attached to the fire hydrant door 18, and the passive unit 46 having the opening / closing valve 31. The outer wire 55 is pulled out from the operation portion 41, drawn into the opening 13a, descended through the fire hose storage space, led into the duct 3, and connected to the passive portion 46. The turnbuckle 63 is disposed in the fire hose storage space, and a plurality of drip-proof covers 69 are attached to a portion of the outer wire 55 in the duct 3.

  Next, a method for attaching the passive portion 46 of the remote opening / closing means 40 will be described with reference to FIGS. FIG. 9 to FIG. 11 are diagrams for explaining a method of attaching the passive part of the remote opening / closing means in the fire hydrant device according to the embodiment of the present invention.

  First, the remote opening / closing means 40 is assembled and carried into the installation site of the fire hydrant apparatus 10 with the operation unit 41 attached to the back surface of the fire hydrant door 18. The remote opening / closing means 40 operates the turnbuckle 63 so that the tension of the inner wire 56 is relaxed so that play is generated between the rotation of the operation side pulley 44 and the rotation of the passive side pulley 49. . And the base frame 14 is installed in the floor surface of the box opener 4, the box 12 is fixed to the base frame 14 by bolting etc., and the fire hydrant main body 11 is installed. Next, the on-off valve 31 is coupled to the water stop valve 8 and the fire hydrant valve unit 30 is attached. Further, one end of the connection hose 25 is connected to the joint member 24, and the other end is connected to the joint portion 34.

  Then, as shown in FIG. 9, the protruding end of the opening / closing shaft 35 is fitted into the fitting recess 51, and the bottom plate of the box 47 of the passive portion 46 is fastened and fixed to the flange portion 31 a of the opening / closing valve 31 with a bolt 70. The passive part 46 is attached to the on-off valve 31. Then, as shown in FIG. 10, the power transmission arm 50 is overlapped with the opening / closing arm 36, and the connection pin 53 is inserted into the connection holes 52, 37 to connect the power transmission arm 50 and the opening / closing arm 36. Next, as shown in FIG. 11, the connected open / close arm 36 and power transmission arm 50 are positioned at the closed position. Further, the open / close lever 45 of the operation unit 41 is positioned at the closed position (position shown in FIG. 3).

  Next, the bellows portion of the rust preventive cover 68 is shrunk to expose the turnbuckle 63. Then, the nuts 66 and 67 are loosened, and the inner wire 56 is rotated to a predetermined tension (for example, set torque: about 0.1 N · m). Thereafter, the nuts 66 and 67 are tightened to fix the body portion 64, and the bellows portion of the rust preventive cover 68 is extended so as to cover the turnbuckle 63. Furthermore, the water stop valve 8 is opened, and the installation of the fire hydrant device 10 is completed.

  In the fire hydrant device 10 installed in this way, when the user pulls the handle 19 toward the front, the fire hydrant door 18 rotates in the forward tilt direction and hangs down to open the opening 13a. Therefore, the user turns the opening / closing lever 45 of the operation unit 41 from the closed position shown in FIG. 3 to the downward opened position. The turning torque of the opening / closing lever 45 is transmitted to the opening / closing arm 36 through the operation side pulley 44, the inner wire 56, the passive side pulley 49 and the power transmission arm 50, and the opening / closing valve 31 is opened. Thereby, water for fire extinguishing is supplied from the water distribution main 5 to the fire hose 15 via the fire hydrant valve unit 30 and the connecting hose 25. Then, the user goes to the fire occurrence site while pulling out the fire hose 15 with the fire extinguishing nozzle 15a, discharges water from the fire extinguishing nozzle 15a, and performs fire fighting activities.

  According to the present invention, the fitting recess 51 is formed at the axial center position of the end portion of the passive shaft 48 of the passive portion 46, and the power transmission arm 50 is fixed to the end portion side of the passive shaft 48. It extends in the radial direction. The opening / closing arm 36 is fixed to the protruding end side of the opening / closing shaft 35 of the opening / closing valve 31 and extends in the radial direction of the opening / closing shaft 35. The protruding end of the opening / closing shaft 35 is housed in the fitting recess 51, and the power transmission arm 50 is connected to the opening / closing arm 36. Therefore, since the attachment of the passive part 46 to the fire hydrant valve unit 30 is simplified, the passive part 46 can be easily attached to the fire hydrant valve unit 30 even in the narrow duct 3, and the installation workability of the fire hydrant apparatus 10 is improved. It is done.

  Further, the tension of the inner wire 56 is loosened so that play is generated between the rotation of the operation side pulley 44 and the rotation of the passive side pulley 49, the power transmission arm 50 is connected to the opening / closing arm 36, and then opened / closed. By simply placing the arm 36 and the open / close lever 45 in the closed position and operating the turnbuckle 63 to generate tension on the inner wire 56, the position of the open / close lever 45 and the open / close valve 31 is adjusted, improving the installation workability. It is done.

  Further, the rotational torque of the passive shaft 48 is transmitted to the opening / closing shaft 35 via the connecting portion between the power transmission arm 50 and the opening / closing arm 36. Thereby, the opening / closing valve 31 can be opened and closed with a small rotational torque of the passive shaft 48, and the opening / closing operation of the opening / closing valve 31 by the remote opening / closing means 40 is facilitated.

  The connection hole 52 formed in the power transmission arm 50 and the connection hole 37 formed in the opening / closing arm 36 are overlapped, and the connection pin 53 is fitted into the overlapped connection holes 52, 37 to open and close the power transmission arm 50. The arm 36 is connected and integrated. Thereby, alignment with the power transmission arm 50 and the opening-and-closing arm 36 becomes easy, and the installation workability | operativity of the fire hydrant apparatus 10 is improved. Instead of the connecting pin 53, other connecting members may be used. In addition, the connecting pin 53 that is a connecting member has been described as a separate member from the power transmission arm 50 and the opening / closing arm 36, but the connection pin is integrally formed as one member on one of the power transmission arm 50 and the opening / closing arm 36, A connection hole may be formed in the other of the power transmission arm 50 and the opening / closing arm 36, and a connection pin may be fitted into the connection hole so that the power transmission arm 50 and the opening / closing arm 36 are connected and integrated.

  Further, although not described in detail as a member for preventing the connection between the power transmission arm 50 and the opening / closing arm 36 (a member for preventing the connection member from coming off), in the embodiment, the connection pin 53 is provided with an O-ring. However, other connecting member removal preventing members may be used. For example, a snap pin, a nut, or the like that is locked to the connecting member may be used.

  Since the turnbuckle 63 is disposed in a part (in the middle) of the outer wire 55 in the length direction, the arrangement path length of the outer wire 55 can be adjusted only by turning the trunk portion 64 of the turnbuckle 63. Thereby, the tension adjustment work of the inner wire 56 is simplified, and the installation workability of the fire hydrant device 10 is improved. Note that other tension adjusting means for the inner wire 56 may be used as the tension adjusting means for the inner wire 56 instead of the turnbuckle 63.

  The water that exudes from the concrete casing 1 of the tunnel contains corrosive components and descends through the outer wire 55 and enters the passive portion 46 of the turnbuckle 63 and the remote opening / closing means 40 to corrode metal parts. There is a risk. In this invention, the anticorrosion cover 68 is attached to the outer wire 55 so that the bellows portion is extended, covers the turnbuckle 63, and elastically contacts the outer wire piece at both ends over the entire circumference. The rust preventive cover 68 prevents water having corrosive components descending through the outer wire 55 from entering the turnbuckle 63 or coming into the turnbuckle 63 having corrosive components. Thereby, the occurrence of corrosion of the body portion 64 and the bolts 65a and 65b is suppressed, and the tension adjustment work of the inner wire 56 by the turnbuckle 63 can be stably performed for a long period of time.

  The turnbuckle 63 is preferably disposed so that the fire hydrant door 18 can be opened and operated from the opening 13a in order to facilitate the tension adjustment work by the periodic inspection. For example, the turnbuckle 63 can be operated from the side plate 16a ( As shown in FIG. At this time, if the turnbuckle 63 is disposed so as to be covered with the cover plate, unnecessary erroneous operation can be prevented.

  Further, since the drip-proof cover 69 is produced in a bowl shape having a through hole at the bottom center, and the opening is directed downward, the drip-proof cover 69 is transmitted through the outer wire 55 through the outer wire 55. To prevent further descent of water with corrosive components descending. As a result, the occurrence of corrosion of the inner wire 56 due to water having corrosive components traveling through the outer wire 55 and entering the passive portion 46 is suppressed, and the opening / closing torque of the opening / closing lever 45 is smoothly applied to the opening / closing valve 31. Communicated.

  Further, when opened, a conventional forward tilting fire hydrant door that is opened approximately 90 ° and is positioned on the supervisor passage 2 is required to have rigidity that does not break even if a user places it on the fire hydrant door plate. There is a problem that the thickness has to be increased, and the manufacturing cost of the fire hydrant main body is increased, the weight is increased, and the transportation cost is increased. In the present invention, the fire hydrant door 18 is attached to the front panel 13 so as to rotate about 180 ° in the forward tilt direction and hang down to open the opening 13a. The situation is avoided. Therefore, the fire hydrant door 18 can be reduced in weight, and the manufacturing cost and the transportation cost can be reduced. In addition, the conventional forward tilting fire hydrant door can also be employ | adopted as a fire hydrant door of this invention.

  Moreover, since the operation part 41 of the fire-extinguishing nozzle 15a and the remote opening / closing means 40 is attached to the back surface of the fire hydrant door 18, when the fire hydrant door 18 is opened, the user can further pass the lane from the supervisor passage 2. Operate the open / close valve 45 of the operation unit 41 from the side, open the open / close valve 31, hold the fire extinguishing nozzle 15 a, pull out the fire extinguishing hose 15, go to the fire occurrence site, discharge water from the fire extinguishing nozzle 15 a, it can.

  Since the stop valve opening / closing lever 8a of the stop valve 8 is disposed on the opposite side of the opening / closing shaft 35 of the on / off valve 31 with respect to the fire hydrant valve unit 30, the user is disturbed by the passive portion 46. Accordingly, the stop valve opening / closing lever 8a can be operated, and the opening / closing operation of the stop valve 8 is facilitated. Although not shown in detail, a maintenance door communicating with the lower duct 3 is provided on the road surface of the supervisor passage 2, so that the user can replace the fire hydrant valve unit 30 when necessary. The maintenance door can be opened and the stop valve opening / closing lever 8a can be operated. Similarly, when the remote opening / closing means 40 fails, the opening / closing valve 31 can be opened by directly operating the opening / closing arm 36.

  Further, the remote opening / closing means 40 produced by assembling the operation unit 41, the passive unit 46, and the transmission unit 54 is attached to the back surface of the fire hydrant door 18, the operation unit 41 is assembled to the fire hydrant main body 11, and carried into the installation site. The fire hydrant main body 11 is disposed in the box opener 4, and the fire hydrant valve unit 30 is attached to the branch portion of the water distribution main 5. Next, the protruding end of the opening / closing shaft 35 is housed in the fitting recess 51, the power transmission arm 50 is connected to the opening / closing arm 36, and the passive portion 46 is attached to the fire hydrant valve unit 30. Therefore, the passive portion 46 can be easily attached to the fire hydrant valve unit 30 even in the narrow duct 3, and the installation workability can be improved.

  In addition, a rubber spanner having a hardness of A90 is used and the body 64 of the turnbuckle 63 is turned until it cannot be turned to adjust the tension (set torque) of the inner wire 56 to about 0.1 N · m. That is, if the barrel 64 is turned with a rubber spanner, the barrel 64 cannot be turned any more with the spanner if the set tension is reached. Therefore, the tension of the inner wire 56 is simply changed to the tension according to the hardness of the spanner. And can be adjusted accurately. Here, the set tension of the inner wire 56 is larger than 0 N · m so that play does not occur between the rotation of the operation side pulley 44 and the rotation of the passive side pulley 49, and the user can open and close the open / close lever 45. The rubber spanner having a hardness corresponding to the set tension may be used.

  For example, there is a method of adjusting the tension of the inner wire 56 by turning the body portion 64 with a torque wrench. Here, the torque wrench is suitable for setting a relatively large tension and is not suitable for setting a small tension as described above, but other tools such as a torque wrench are used instead of the rubber spanner. May be used.

  In the above-described embodiment, the shape retaining rubber-drawn hose (connection hose 25) is used as the supply pipe. However, the supply pipe may be a metal pipe.

  5 Water distribution main, 10 Fire hydrant device, 11 Fire hydrant body, 15 Fire hose, 17 Fire extinguisher, 25 Connection hose (supply piping), 30 Fire hydrant valve unit, 31 Open / close valve, 35 Open / close shaft, 36 Open / close arm, 37 connection Hole, 40 Remote open / close means, 41 Operation section, 42 Box (operation side housing), 43 Operation shaft, 44 Operation side pulley, 45 Open / close lever, 46 Passive section, 47 Box (passive side housing), 48 Passive shaft, 49 Passive pulley, 50 Power transmission arm, 51 Fitting recess, 52 Connection hole, 53 Connection pin, 54 Transmission unit, 55 Outer wire, 56 Inner wire, 63 Turn buckle, 64 Body, 68 Anticorrosion cover, 69 Drop cover.

Claims (4)

A fire hydrant body containing a fire hose inside,
A fire hydrant valve unit with a built-in on-off valve;
A fire water supply pipe connecting the fire hydrant valve unit and the fire hose;
In a fire hydrant device comprising a remote opening and closing means for opening and closing the on-off valve,
The on-off valve has an on-off arm fixed to the on-off shaft and extending in a radial direction of the on-off shaft,
The remote opening and closing means is
A passive part having a passive axis;
An operation unit that is disposed within the fire hydrant body and generates a rotational torque for opening and closing the on-off valve;
A transmission unit that transmits the rotational torque to the passive shaft;
The fire hydrant apparatus, wherein the passive portion is attached to the fire hydrant valve unit by connecting the passive shaft to the opening / closing shaft so as to transmit the rotational torque. The passive part has a power transmission arm fixed to the passive shaft and extending in the radial direction of the passive shaft,
The fire hydrant device according to claim 1, wherein the power transmission arm is connected to the opening and closing arm.   The water stop valve opening / closing lever is provided with a water stop valve disposed on the secondary side of the open / close valve so that the stop valve is located on the opposite side of the open / close shaft of the fire hydrant valve unit. The fire hydrant device according to claim 1 or claim 2.   The fire hydrant apparatus according to any one of claims 1 to 3, wherein the fire hydrant valve unit is disposed at a branch portion of a water distribution main provided outside the fire hydrant main body.

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