Quick opening device for fire hydrant cover

Abstract

The utility model discloses a kind of fire hydrant lid quick opening device, including barrel, handle and side wall's opening button being arranged on the upper end of barrel, nitrogen pressure ware being installed in the internal chamber of barrel, and the hole breaker that can be telescopic and stored in the lower end of barrel.The bottom of barrel is equipped with conical guide section, its inner wall is coaxial alignment with the ejection path of hole breaker.When operating, the conical guide section is abutted with the hole edge of hydrant lid, nitrogen pressure ware is triggered by pressing opening button, drive hole breaker to 3kpa pressure ejection and penetrate blockage;Subsequently, lift handle, hydrant lid can be pryed and opened.The utility model is through the functional design of directional ejection hole and lever pry structure, realize single person to open blocked hydrant lid quickly in short time, solve the problem that traditional tool operation is time-consuming, positioning is not accurate, significantly improve fire emergency rescue efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fire emergency rescue equipment technology, specifically a quick-opening device for fire well covers. Background Technology

[0002] Traditional fire hydrant covers often become clogged with rust and silt over time, leading to blocked openings. Current hydraulic dismantling tools require multiple operators and take an average of over 3 minutes, delaying emergency rescue. While some pneumatic opening devices exist, their complex structure and poor environmental adaptability fail to meet the needs of rapid dismantling and assembly at fire scenes. Utility Model Content

[0003] The purpose of this invention is to provide a quick-opening device for fire hydrant covers. This device has a compact structure and is highly efficient in operation, so as to solve the problem of difficulty and time-consuming opening when the manhole is blocked.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a quick-opening device for fire hydrant covers, comprising a cylinder with an axially penetrating pneumatic chamber inside; an opening button is provided on the upper side wall of the cylinder; a nitrogen pressure device is fixedly installed in the pneumatic chamber of the cylinder, and the nitrogen pressure device is electrically connected to the opening button via a wire; a hole breaker is retractably housed in the lower chamber of the cylinder, and the hole breaker is coaxially connected to the piston rod of the nitrogen pressure device; a handle is hinged to the outer side of the upper end of the cylinder, and the free end of the handle is provided with an anti-slip structure.

[0005] Preferably, the cylinder is integrally formed from 304 stainless steel, with a wall thickness of 2-3mm, and the surface is treated with anti-corrosion passivation.

[0006] Preferably, the anti-slip structure of the handle includes a wavy anti-slip texture on the outer surface of the handle and a silicone anti-slip sleeve fitted onto the outer layer of the handle.

[0007] Preferably, the driving pressure of the nitrogen pressure device is 3±0.5 kPa, and the ejection stroke of the rupture device is 50–60 mm.

[0008] Preferably, the lower end of the cylinder is provided with a tapered guide section with a taper angle of 15°–20°.

[0009] Preferably, the handle is hinged to the cylinder via a pivot, and the pivot has a built-in return spring to enable the handle to fold automatically.

[0010] The working process of this utility model is as follows: Align the conical guide of the cylinder with the manhole cover opening and press the start button to trigger the nitrogen pressure device. High-pressure gas propels the breaker downwards 60mm, penetrating the blockage and locking into the manhole cover structure. Lift the handle by its anti-slip texture and silicone sleeve area, using leverage to pry open the manhole cover. After operation, the handle automatically folds and attaches to the cylinder via a pivot spring.

[0011] The beneficial effects of this utility model are as follows: (1) This utility model uses a nitrogen pressure device to drive the hole breaker to be ejected instantaneously, and with the positioning guidance of the conical guide, it directly penetrates the hole of the blockage manhole and forms a mechanical anchor. This design reduces the time required for traditional manual opening (more than 3 minutes) to within 30 seconds, and only requires one person to operate, which greatly improves the response speed of fire rescue.

[0012] (2) The conical guide part integrally formed at the lower end of the middle cylinder of this utility model can adaptively fit the edge of the well cover hole of different specifications, and can still maintain accurate alignment under conditions of oil, water accumulation or tilted well cover. The hole breaker is ejected directionally along the axis of the guide part, which effectively avoids the opening failure caused by positioning deviation of traditional tools and ensures the success rate of one-time operation.

[0013] (3) The handle of this utility model has a dual structure of anti-slip texture and silicone anti-slip sleeve, which significantly improves grip stability; the pivot spring reset design realizes automatic folding and storage of the handle. The combination of the two reduces the risk of slippage during operation, while reducing the storage volume of the device, making it easy to carry and deploy quickly. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention (closed state); Figure 2 This is a schematic diagram of the overall structure of the present invention (open state); The components are: 1-cylinder body, 101-conical guide, 2-handle, 201-anti-slip texture, 202-silicone anti-slip sleeve, 203-rotating shaft, 3-nitrogen pressure device, 4-hole breaker, and 5-start button. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings.

[0016] like Figure 1-2The device shown is a quick-opening device for fire hydrant covers, comprising a cylindrical body 1, which is integrally formed from 304 stainless steel with a wall thickness of 2-3 mm and a surface treated with anti-corrosion passivation. An axially penetrating pneumatic chamber is provided inside the cylindrical body 1. An opening button 5 is provided on the upper side wall of the cylindrical body 1. A nitrogen pressure device 3 is fixedly installed in the pneumatic chamber of the cylindrical body 1, and the nitrogen pressure device 3 is electrically connected to the opening button 5 via a wire. A retractable hole breaker 4 is housed in the lower chamber of the cylindrical body 1, and the hole breaker 4 is coaxially connected to the piston rod of the nitrogen pressure device 3. A handle 2 is hinged to the upper outer side of the cylindrical body 1, and the handle 2 is hinged to the cylindrical body 1 via a pivot 203, with a built-in return spring in the pivot 203 to achieve automatic folding of the handle. The free end of the handle 2 has an anti-slip structure. The anti-slip structure of the handle 2 includes a wavy anti-slip texture 201 on the outer surface of the handle 2, and a silicone anti-slip sleeve 202 fitted onto the outer layer of the handle 2. The lower end of the cylinder 1 is provided with a tapered guide section 101, the taper angle of which is 15°–20°.

[0017] The driving pressure of nitrogen pressure device 3 is 3±0.5 kPa, and the ejection stroke of rupture device 4 is 50–60 mm.

[0018] The working process of this utility model is as follows: Align the conical guide section 101 of the cylinder 1 with the manhole cover opening and press the start button 5 to trigger the nitrogen pressure device 3. The high-pressure gas pushes the breaker 4 downwards by 60mm, penetrating the blockage and then locking into the manhole cover structure. Lift the handle 2 by its anti-slip texture 201 and silicone sleeve 202 area, using leverage to pry open the manhole cover. After operation, the handle 2 automatically folds and attaches to the cylinder via the spring of the pivot 203.

[0019] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, based on the technical teachings provided by this utility model and as common knowledge in the mechanical field, other equivalent modifications and improvements can be made, and these should also be considered within the scope of protection of this utility model.

Claims

1. A quick-opening device for fire hydrant covers, characterized in that: The cylinder (1) includes an axially penetrating air pressure chamber inside; an opening button (5) is provided on the upper side wall of the cylinder (1); a nitrogen pressure device (3) is fixedly installed in the air pressure chamber of the cylinder (1), and the nitrogen pressure device (3) is electrically connected to the opening button (5) through a wire; a puncturist (4) is retractably stored in the lower chamber of the cylinder (1), and the puncturist (4) is coaxially connected to the piston rod of the nitrogen pressure device (3); a handle (2) is hinged to the upper outer side of the cylinder (1), and the free end of the handle (2) is provided with an anti-slip structure.

2. The quick-opening device for fire hydrant covers according to claim 1, characterized in that: The cylinder (1) is integrally formed from 304 stainless steel with a wall thickness of 2-3mm and the surface is treated with anti-corrosion passivation.

3. A quick-opening device for fire hydrant covers according to claim 1 or 2, characterized in that: The anti-slip structure of the handle (2) includes a wave-shaped anti-slip texture (201) on the outer surface of the handle (2) and a silicone anti-slip sleeve (202) fitted on the outer layer of the handle (2).

4. A quick-opening device for fire hydrant covers according to claim 3, characterized in that: The driving pressure of the nitrogen pressure device (3) is 3±0.5 kPa, and the ejection stroke of the puncturer (4) is 50–60 mm.

5. A quick-opening device for fire hydrant covers according to claim 4, characterized in that: The lower end of the cylinder (1) is provided with a tapered guide section (101) with a taper angle of 15°–20°.

6. A quick-opening device for fire hydrant covers according to claim 5, characterized in that: The handle (2) is hinged to the cylinder (1) via a pivot (203), and the pivot (203) has a built-in return spring to enable the handle to fold automatically.

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