CN210507622U

CN210507622U - Anti-theft fire hydrant

Info

Publication number: CN210507622U
Application number: CN201921189246.2U
Authority: CN
Inventors: 陈润福
Original assignee: Shanghai Huhang Valves Co ltd
Current assignee: Shanghai Huhang Valves Co ltd
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-05-12
Anticipated expiration: 2029-07-26

Abstract

The utility model relates to an anti-theft fire hydrant, which comprises a fire hydrant main body, wherein a valve rod is arranged in the center of the fire hydrant main body, an anti-theft mechanism connected with the valve rod is arranged at the top of the fire hydrant main body, the anti-theft mechanism comprises a bolt cover, a transmission case and a self-locking mechanism, the bottom of the bolt cover is connected with the top of the fire hydrant main body through a flange, the top of the bolt cover is connected with the transmission case through a flange, the self-locking mechanism is arranged in the transmission case, and the valve rod extends to the upper part of the transmission case after penetrating through the bolt cover and the transmission case; the self-locking mechanism comprises a worm wheel, a first worm, a second worm, a driving belt wheel, a driven belt wheel and an anti-theft shaft; the utility model discloses a self-locking mechanism's drive driving valve rod rotates to self-locking mechanism's theftproof axle only can rotate through the spanner that corresponds, avoids the fire hydrant to be stolen, is worth wideling popularize.

Description

Anti-theft fire hydrant

Technical Field

The utility model belongs to the technical field of fire-fighting equipment, concretely relates to theftproof fire hydrant.

Background

A fire hydrant, called fire hydrant formally, is a fixed fire-fighting equipment, and mainly has the functions of controlling combustible substances, isolating combustion-supporting substances and eliminating ignition sources. It is divided into indoor fire hydrant and outdoor fire hydrant.

The fire extinguishing system comprises an outdoor fire hydrant system, an indoor fire hydrant system and a fire extinguisher system, and some fire extinguishing systems also comprise an automatic spraying system, a water cannon system, a gas fire extinguishing system, a fire detection system, a water mist system and the like. The fire hydrant suit is generally formed by combining a fire box, a fire hose, a water gun, a connecting buckle, a bolt, a clamp and the like, the fire hydrant is mainly used for a fire truck to take water from a municipal water supply network or an outdoor fire-fighting water supply network to put out a fire, and the fire hydrant can also be directly connected with the water hose and the water gun to discharge water to put out a fire. Therefore, indoor and outdoor fire hydrant systems are also one of the important fire fighting devices for fighting fires.

Outdoor fire hydrant includes that outdoor fire hydrant of ground formula and underground outdoor fire hydrant are two kinds, outdoor fire hydrant of ground formula is because the main part is located the ground top, easily contacted by lawless persons, lawless persons' private outdoor fire hydrant often can appear, use the fire-fighting water privately, the anhydrous available condition when the condition of a fire appears easily, harm is very big, and outdoor fire hydrant often uses and leads to the valve to damage easily, lead to outdoor fire hydrant unable the use, bring very big hidden danger for the fire control safety.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an anti-theft fire hydrant for avoiding the fire hydrant to be stolen in order to solve the problems.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

an anti-theft fire hydrant comprises a fire hydrant body, wherein a valve rod is arranged in the center of the fire hydrant body, an anti-theft mechanism connected with the valve rod is arranged at the top of the fire hydrant body, the anti-theft mechanism comprises a hydrant cover, a transmission case and a self-locking mechanism, the bottom of the hydrant cover is connected with the top of the fire hydrant body through a flange, the top of the hydrant cover is connected with the transmission case through the flange, the self-locking mechanism is arranged in the transmission case, and the valve rod penetrates through the hydrant cover and the transmission case and then extends to the upper part of the transmission case;

the self-locking mechanism comprises a worm wheel, a first worm, a second worm, a driving belt wheel, a driven belt wheel and an anti-theft shaft, the worm wheel is fixedly arranged on a valve rod in a transmission box, the two sides of the worm wheel are respectively provided with the first worm and the second worm, the first worm and the second worm are in transmission connection with the worm wheel, the two ends of the first worm and the second worm are respectively arranged on the transmission box through bearings, the rear parts of the first worm and the second worm are respectively fixedly provided with the driving belt wheel and the driven belt wheel, and the driving belt wheel is connected with the driven belt wheel through a belt; the front end of the first worm is connected with the antitheft shaft through a coupler, and a special-shaped hole is formed in the front end face of the antitheft shaft and is a blind hole; the front end of the antitheft shaft extends to the front side of the transmission case, an antitheft shaft sleeve is arranged in front of the transmission case, and the antitheft shaft is arranged in the antitheft shaft sleeve.

The anti-theft shaft is connected with the anti-theft wrench, the anti-theft wrench is provided with an inserting column, the end part of the inserting column is provided with a special-shaped bulge corresponding to the special-shaped hole of the anti-theft shaft, and the cross section of the special-shaped bulge is the same as the cross section of the special-shaped hole in shape. The anti-theft wrench is inserted into the anti-theft shaft sleeve, then the central bulge of the anti-theft wrench is inserted into the central hole, the special-shaped bulge is inserted into the special-shaped hole, the anti-theft wrench is rotated to drive the first worm to rotate, the worm gear is driven to rotate through the worm gear and worm, the valve rod is driven to rotate, the driven belt wheel is driven to rotate through the driving belt wheel while the first worm rotates, the second worm is driven to synchronously rotate, and the second worm is prevented from forming self locking on the worm gear.

As a further optimization scheme of the utility model, the upper end and the hand wheel fixed connection of valve rod. Although the hand wheel is arranged, the hand wheel cannot rotate the valve rod, the worm wheel needs to be driven to rotate if the valve rod rotates, the self-locking effect of the worm wheel and the worm limits the worm wheel to be incapable of rotating, the valve rod is limited to be incapable of rotating, and the valve rod can only be driven to rotate through the worm. The hand wheel can play the effect of puzzlement lawless persons, and very big probability can give up opening the fire hydrant when it can't rotate the hand wheel.

As the utility model discloses a further optimization scheme, the front end of theftproof axle and the front end of theftproof axle sleeve are equipped with the clearance. The anti-theft wrench can be conveniently inserted into the anti-theft shaft sleeve.

As the utility model discloses a further optimization scheme, the dysmorphism hole is located the position that the theftproof axle is close to the edge.

As the utility model discloses a further optimization scheme, be equipped with sealing washer or sealing filler between valve rod and the bonnet.

As a further optimization scheme of the utility model, a valve mechanism is arranged inside the fire hydrant main body, the valve mechanism comprises a valve seat, a lower valve rod and a valve core, the valve seat is arranged in the fire hydrant main body, the top of the valve seat is provided with the valve core, the top of the valve core is fixedly connected with the lower valve rod, the upper part of the lower valve rod is provided with a blind hole in clearance fit with the valve rod, the lower end of the valve rod is inserted into the lower valve rod, the lower part of the valve rod is provided with an external thread, an internal thread is arranged in the blind hole of the lower valve rod; the outside of lower valve rod is equipped with the slider, is equipped with on the inner wall of valve body with slider clearance fit's spout, the slider inlays in the spout. The valve rod rotates to drive the lower valve rod through the screw thread effect, and the slide block limits the rotation of the lower valve rod, so that the lower valve rod can only lift along the axial direction to drive the valve core to lift, and the valve mechanism is opened and closed.

The beneficial effects of the utility model reside in that:

1) the utility model drives the valve rod to rotate through the driving belt of the self-locking mechanism, and the anti-theft shaft of the self-locking mechanism can only rotate through the corresponding wrench, thereby avoiding the fire hydrant from being stolen;

2) the utility model discloses set up alarm device, can send the warning, remote monitoring to the surveillance center at the fire hydrant trigger switch when stealing.

Drawings

Fig. 1 is a schematic structural diagram of the present invention in the first embodiment;

FIG. 2 is an enlarged view at A of FIG. 1;

fig. 3 is a partial internal structure diagram of the present invention according to the first embodiment;

FIG. 4 is an enlarged view at B of FIG. 2;

fig. 5 is a schematic structural view of an anti-theft wrench according to a first embodiment of the present invention;

fig. 6 is a schematic structural diagram of the present invention in the second embodiment.

Detailed Description

The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention; in the description of the present invention, "a plurality" or "a plurality" means two or more unless otherwise specified.

Example one

As shown in fig. 1-5, an anti-theft fire hydrant comprises a fire hydrant body 1, a valve rod 2 is arranged in the center of the fire hydrant body 1, an anti-theft mechanism connected with the valve rod 2 is arranged at the top of the fire hydrant body 1, the anti-theft mechanism comprises a bolt cover 3, a transmission case 4 and a self-locking mechanism 5, the bottom of the bolt cover 3 is connected with the top of the fire hydrant body 1 through a flange, the top of the bolt cover 3 is connected with the transmission case 4 through a flange, the self-locking mechanism 5 is arranged in the transmission case 4, and the valve rod 2 penetrates through the bolt cover 3 and the transmission case 4 and then extends to the upper part of the transmission case 4;

the self-locking mechanism 5 comprises a worm wheel 6, a first worm 7, a second worm 8, a driving pulley 9, a driven pulley 10 and an anti-theft shaft 11, the worm wheel 6 is fixedly arranged on the valve rod 2 in the transmission case 4, the two sides of the worm wheel 6 are respectively provided with the first worm 7 and the second worm 8, the first worm 7 and the second worm 8 are in transmission connection with the worm wheel 6, the two ends of the first worm 7 and the second worm 8 are respectively arranged on the transmission case 4 through bearings, the rear parts of the first worm 7 and the second worm 8 are respectively fixedly provided with the driving pulley 9 and the driven pulley 10, and the driving pulley 9 is connected with the driven pulley 10 through a belt; the front end of the first worm 7 is connected with an antitheft shaft 11 through a coupler, a special-shaped hole 12 is formed in the front end face of the antitheft shaft 11, and the special-shaped hole 12 is a blind hole; the front end of the antitheft shaft 11 extends to the front side of the transmission case 4, an antitheft shaft sleeve 13 is arranged in front of the transmission case 4, and the antitheft shaft 11 is arranged in the antitheft shaft sleeve 13.

The anti-theft shaft 11 is connected with an anti-theft wrench 21, an insertion column 22 is arranged on the anti-theft wrench 21, a special-shaped bulge corresponding to the special-shaped hole 12 of the anti-theft shaft 11 is arranged at the end part of the insertion column 22, and the cross section of the special-shaped bulge is the same as the cross section of the special-shaped hole 12 in shape. The anti-theft wrench 21 inserts in the anti-theft shaft sleeve 13, then its central bulge inserts in the centre bore, the dysmorphism is protruding to insert in the dysmorphism hole 12, drive first worm 7 through rotatory anti-theft wrench 21 and rotate to drive worm wheel 6 through worm wheel 6 worm drive and rotate, drive valve rod 2 and rotate, drive driven pulley 10 through driving pulley 9 and rotate when first worm 7 is pivoted, thereby drive the synchronous rotation of second worm 8, avoid second worm 8 to form the auto-lock to worm wheel 6.

The upper end of the valve rod 2 is fixedly connected with the hand wheel 15. Although the hand wheel 15 is arranged, the hand wheel 15 cannot rotate the valve rod 2, the worm wheel 6 needs to be driven to rotate if the valve rod 2 rotates, the worm wheel 6 is limited by the self-locking effect of the worm wheel 6 to rotate, the valve rod 2 is limited to rotate, and the valve rod 2 can only be driven to rotate through the worm. The hand wheel 15 can play a role in confusing lawless persons, and the fire hydrant can be abandoned to be opened with a high probability when the hand wheel 15 cannot be rotated.

A gap is provided between the front end of the antitheft shaft 11 and the front end of the antitheft sleeve 13. The anti-theft wrench 21 can be conveniently inserted into the anti-theft shaft sleeve 13.

The shaped hole 12 is located near the edge of the antitheft shaft 11.

And a sealing ring or sealing filler is arranged between the valve rod 2 and the plug cover 3.

A valve mechanism is arranged in the fire hydrant main body 1 and comprises a valve seat, a lower valve rod 2 and a valve core, the valve seat is arranged in the fire hydrant main body 1, the valve core is arranged at the top of the valve seat, the top of the valve core is fixedly connected with the lower valve rod 2, a blind hole in clearance fit with the valve rod 2 is arranged at the upper part of the lower valve rod 2, the lower end of the valve rod 2 is inserted into the lower valve rod 2, external threads are arranged at the lower part of the valve rod 2, internal threads are arranged in the blind hole of the lower valve rod 2, and the valve rod 2; the outside of lower valve rod 2 is equipped with the slider, is equipped with on the inner wall of valve body with slider clearance fit's spout, the slider inlays in the spout. The valve rod 2 rotates to drive the lower valve rod 2 through the screw thread effect, and the slide block limits the rotation of the lower valve rod 2, so that the lower valve rod can only lift along the axial direction to drive the valve core to lift, and the valve mechanism is opened and closed.

The utility model discloses a structural feature and theory of operation: the utility model discloses a set up worm wheel 6 worm complex self-locking mechanism 5 in transmission case 4 and carry out the auto-lock to valve rod 2, make valve rod 2 can not be driven by hand wheel 15 and rotate, meanwhile valve rod 2 is driven by first worm 7, first worm 7 drives through theftproof axle 11, theftproof axle 11 only can drive the rotation by corresponding theftproof spanner 21, only need the fire fighter carry theftproof spanner 21 during the use, do not need the unlocking device of too big volume nor too loaded down with trivial details unblanking operation, because dysmorphism hole 12 does not set up in the axle center of theftproof axle 11, even lawless persons insert other member in dysmorphism hole 12 can't drive the rotation of theftproof axle 11, because this needs to make the member rotate around theftproof axle 11 center, because of shorter moment, the required strength is very big, and adopt theftproof spanner 21 just different, theftproof spanner 21 has played a shaft coupling effect in fact through special-shaped post and special-shaped raised connection, and the torque can be prolonged by the wrench to drive the inserting column 22 to rotate in a labor-saving manner, so that the antitheft shaft 11 is driven to rotate.

Example two

As shown in fig. 6, an alarm device is added on the basis of the first embodiment, specifically, a first water outlet 31(65mm) and a second water outlet 32(100mm) are arranged on the hydrant body 1, blank caps are arranged on the first water outlet 31 and the second water outlet 32, a waterproof microswitch is arranged inside the first water outlet 31, when water flows out from the first water outlet 31, the waterproof microswitch is impacted by water flow, so that the waterproof microswitch is triggered, a tilt switch is arranged on the blank cap of the second water outlet 32, and when the blank caps are opened, the tilt switch is triggered; an alarm device is arranged in the transmission case 4 and is connected with a power supply through an inclined switch and a waterproof microswitch.

The tilt switch and the waterproof microswitch are connected in series.

The power source is a battery provided in the transmission case 4.

The alarm device comprises a microprocessor, a GPRS module and an antenna, wherein the GPRS module is connected with an I/O port of the microprocessor, and the antenna is connected with a signal output end of the GPRS module. The microprocessor controls the GPRS module to remotely send preset alarm information to the monitoring center through GPRS so as to realize alarm.

Above-mentioned, alarm device still includes bluetooth module, and bluetooth module connects microprocessor's IO mouth, makes it can pass through intelligent terminal such as bluetooth connection cell-phone, receives alarm information through intelligent terminal.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. An anti-theft fire hydrant is characterized in that: the fire hydrant comprises a fire hydrant body, wherein a valve rod is arranged in the center of the fire hydrant body, an anti-theft mechanism connected with the valve rod is arranged at the top of the fire hydrant body, the anti-theft mechanism comprises a bolt cover, a transmission case and a self-locking mechanism, the bottom of the bolt cover is connected with the top of the fire hydrant body through a flange, the top of the bolt cover is connected with the transmission case through the flange, the self-locking mechanism is arranged in the transmission case, and the valve rod penetrates through the bolt cover and the transmission case and then extends to the upper part of the;

2. An anti-theft fire hydrant according to claim 1 in which: the anti-theft shaft is connected with the anti-theft wrench, the anti-theft wrench is provided with an inserting column, the end part of the inserting column is provided with a special-shaped bulge corresponding to the special-shaped hole of the anti-theft shaft, and the cross section of the special-shaped bulge is the same as that of the special-shaped hole in shape.

3. An anti-theft fire hydrant according to claim 1 in which: the upper end of the valve rod is fixedly connected with the hand wheel.

4. An anti-theft fire hydrant according to claim 1 in which: a gap is formed between the front end of the anti-theft shaft and the front end of the anti-theft shaft sleeve.

5. An anti-theft fire hydrant according to claim 1 in which: the special-shaped hole is positioned at the position of the antitheft shaft close to the edge.

6. An anti-theft fire hydrant according to claim 1 in which: and a sealing ring is arranged between the valve rod and the bolt cover.

7. An anti-theft fire hydrant according to claim 1 in which: the fire hydrant comprises a fire hydrant body, and is characterized in that a valve mechanism is arranged in the fire hydrant body, the valve mechanism comprises a valve seat, a lower valve rod and a valve core, the valve seat is arranged in the fire hydrant body, the valve core is arranged at the top of the valve seat, the top of the valve core is fixedly connected with the lower valve rod, a blind hole in clearance fit with the valve rod is formed in the upper part of the lower valve rod, the lower end of the valve rod is inserted into the lower valve rod, external threads are arranged at the lower part of the valve rod, internal threads are arranged; the outside of lower valve rod is equipped with the slider, is equipped with on the inner wall of valve body with slider clearance fit's spout, the slider inlays in the spout.