A protection structure of a fire hydrant

Abstract

A protection structure of a fire hydrant, characterized in that it comprises a handle, a top ring, a spiral body, a bottom ring, a base and a fire hydrant body; wherein the spiral body is a cylindrical spiral spring structure, and two ends thereof are fixedly connected with the top ring and the bottom ring respectively; the lower surface of the bottom ring is provided with at least two limiting columns; the base is fixed to the ground and is sleeved on the outer periphery of the fire hydrant body, and the upper surface of the base is provided with a limiting plate; the limiting plate is provided with an entering channel groove, an oblique channel groove and a limiting channel groove which are sequentially communicated, for inserting, sliding and locking the limiting columns, so as to realize quick installation and dismounting of the device.

Description

Technical Field

[0001] This utility model relates to the field of fire protection equipment technology, and in particular to a spiral anti-collision structure for protecting outdoor fire hydrants from impacts by vehicles or other external forces and which can be quickly disassembled and installed. Background Technology

[0002] The existing public document CN220978201U discloses a fire hydrant with a protective structure, which absorbs the impact energy of accidental collisions with vehicles or pedestrians by setting left and right protective shells on the outside of the fire hydrant body and setting springs between the protective shells and the fire hydrant, thereby reducing the risk of fire hydrant damage.

[0003] However, the above solution still has the following shortcomings in practical applications:

[0004] Installation and disassembly require sequential operation of the left and right protective shells and the buckling mechanism, which is cumbersome and still requires the use of special tools, making it difficult to achieve quick maintenance.

[0005] Although the spring can absorb some energy after a collision, the protective shell and spring cannot automatically reset and need to be manually reset or replaced, resulting in high maintenance costs.

[0006] The overall structure is large in size, occupies a significant amount of road space, and affects the city's appearance and traffic flow.

[0007] Without anti-theft devices, the entire protective casing can be removed, posing a risk of vandalism or theft.

[0008] Therefore, there is still a need for a fire hydrant protection device with a simpler structure, stronger impact resistance and reset capability, quick disassembly and assembly, and anti-theft function. Utility Model Content

[0009] The technical problem to be solved by this utility model is to provide a spiral fire hydrant protective structure that can be quickly disassembled and assembled, and has good anti-collision and self-resetting functions, so as to solve the problems of inconvenient disassembly and assembly, difficult resetting and poor anti-theft in the prior art.

[0010] This utility model achieves its purpose through the following technical solution:

[0011] A protective structure for a fire hydrant includes a handle, a top ring, a spiral body, a bottom ring, a base, and a fire hydrant body;

[0012] The spiral body is a cylindrical helical spring structure, with its two ends fixedly connected to the top ring and the bottom ring, respectively.

[0013] The lower surface of the bottom ring is provided with at least two limiting posts;

[0014] The base is fixed to the ground and fitted around the periphery of the fire hydrant body, and a limiting plate is provided on the upper surface of the base;

[0015] The limiting plate has an entry channel groove, an inclined channel groove, and a limiting channel groove connected in sequence for the insertion and sliding of the limiting post, so as to realize the quick installation and disassembly of the device.

[0016] As a further limitation of this technical solution, the angle α between the inclined channel groove and the horizontal plane is 30° to 60°, and the angle β between the limiting channel groove and the vertical line is 0° to 10°, to prevent natural dislodgement.

[0017] As a further limitation of this technical solution, the spiral body is made of 60Si2MnA spring steel, which is quenched and tempered at medium temperature, with a hardness of HRC40-45. The surface is shot-peened and electroplated with zinc-nickel alloy, with a coating thickness of 8-12 μm.

[0018] As a further limitation of this technical solution, the outer diameter of both the top ring and the bottom ring is 15-25 mm larger than the outer diameter of the spiral ring, and the material is Q345B hot-rolled steel plate with a thickness of 6 mm.

[0019] As a further limitation of this technical solution, the limiting post is a quenched and tempered 45# steel part with a diameter d=10 mm, a length L=30 mm, and an end chamfer of 1×45°.

[0020] As a further limitation of this technical solution, the handle is made of Φ16 mm round steel bent into shape, with a surface dip-coated layer thickness of 1.0-1.5 mm.

[0021] As a further limitation of this technical solution, the limiting plate is made of ZG270-500 cast steel, which has been heat-treated and has a thickness of 10-15 mm.

[0022] As a further limitation of this technical solution, a detachable chain and lock are provided between any point of the top ring, the spiral body or the bottom ring and any point of the base, the fire hydrant body or the limiting plate for the purpose of theft prevention.

[0023] As a further limitation of this technical solution, the chain is made of 304 stainless steel, the chain link diameter is 4mm, the breaking tensile force is ≥20 kN, and the lock is a leaf-type anti-theft padlock.

[0024] As a further limitation of this technical solution, after the spiral is impacted by a 1.5 t vehicle at a speed of 15 km / h, the maximum dynamic displacement is ≤120 mm, the residual displacement is ≤5 mm, and it can automatically rebound and reset without permanent deformation.

[0025] Compared with the prior art, the advantages and positive effects of this utility model are:

[0026] During installation, the operator holds the handle and inserts the two limiting posts of the bottom ring through the inlet channel groove. Then, the operator rotates the ring upwards along the inclined channel groove at a certain angle, and then downwards along the limiting channel groove to the bottom. The entire spiral is then installed on the base. At this point, even with a slight impact or simple upward lifting force, it will not accidentally come off. For disassembly, the operation is reversed: lift the handle upwards and rotate it in the opposite direction, allowing the limiting posts to exit sequentially through the limiting channel groove, the inclined channel groove, and the inlet channel groove. This allows for quick removal of the entire device, facilitating access to the fire hydrant.

[0027] Use, repair or replace.

[0028] The main body of this device is spiral-shaped and can be formed in one go using conventional equipment for processing large springs. It can be manufactured simply by welding the handle, top ring, bottom ring and limit post, resulting in low production costs.

[0029] To further enhance anti-theft performance, a chain or simple lock can be connected between any point on the top ring, spiral body, or bottom ring and any point on the base, fire hydrant body, or limit plate. Even after disassembly, the device remains bound by the chain, preventing it from being stolen entirely or vandalized.

[0030] Book

[0031] The utility model adopts an elastic spiral structure. When subjected to external force such as vehicles, the spiral can generate elastic deformation to absorb the impact and quickly rebound and reset after the force is removed, without the need for manual intervention, which significantly reduces the amount of maintenance work. Attached Figure Description

[0032] Figure 1 This is a perspective view of the present utility model; Figure 2 This is the front view of the present invention;

[0033] Figure 3 A three-dimensional view of the fire hydrant body, limit plate, base, and other structures;

[0034] Figure 4 This is a three-dimensional diagram of a helix or similar structure. The diagram is labeled as follows:

[0035] 1—Handle; 2—Top ring; 3—Spiral; 4—Bottom ring; 41—Limiting post; 5—Base; 6—Fire hydrant body; 7—Limiting plate; 71—Entry channel groove; 72—Angled channel groove; 73—Limiting channel groove. Detailed Implementation

[0036] The following describes a specific embodiment of the present invention in detail with reference to the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.

[0037] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0039] like Figures 1-4 As shown, this utility model includes a protective structure for a fire hydrant, comprising a handle, a top ring, a spiral body, a bottom ring, a base, and a fire hydrant body;

[0040] The spiral body is a cylindrical helical spring structure, with its two ends fixedly connected to the top ring and the bottom ring, respectively.

[0041] The lower surface of the bottom ring is provided with at least two limiting posts;

[0042] The optimal configuration consists of two or four limiting posts, symmetrically distributed on the lower surface of the base ring, which provides the best mechanical balance. The base is fixed to the ground and fitted around the perimeter of the fire hydrant body, with a limiting plate on the upper surface of the base.

[0043] The limiting plate has an entry channel groove, an inclined channel groove, and a limiting channel groove that are connected in sequence.

[0044] The three slots are connected end to end in sequence, allowing the limit post to be inserted and slid, so as to realize the quick installation and disassembly of the device.

[0045] A detachable chain and lock are provided between any point of the top ring, spiral body, or bottom ring and any point of the base, fire hydrant body, or limiting plate for the purpose of theft prevention.

[0046] The optimal installation method is to use a chain between the top or bottom ring and the base, which makes installation the most convenient.

[0047] Example 1: The spiral body 3 is made of Φ12 mm 60Si2MnA spring steel wound into a cylindrical spiral structure with an outer diameter of 250 mm, a height of 600 mm, and a pitch of 50 mm. Its two ends are welded and fixed to the top ring 2 and the bottom ring 4, respectively. The handle 1 is welded to the outside of the top ring 2 for easy gripping and operation. Two Φ10 mm, 30 mm long limiting posts 41 are welded to the lower surface of the bottom ring 4, and the two limiting posts 41 are arranged symmetrically in the center. The base 5 is disc-shaped with a through hole in the center for the fire hydrant body 6 to pass through, and is fixed to the ground with anchor bolts. Figure 3 As shown, a limiting plate 7 is welded to the upper surface of the base 5. The limiting plate 7 is milled with an entry channel groove 71, an oblique channel groove 72 and a limiting channel groove 73 to form an oblique Z-shaped locking groove.

[0048] During installation, hold handle 1 to lift the entire device; insert the limiting post 41 into the channel groove 71, move it along the channel groove 71 to the bottom, and continue to move it diagonally upward along the inclined channel groove 72 to the end of the inclined channel groove 72; after releasing, the limiting post 41 will fall 5 mm down along the limiting channel groove 73 to the bottom, and will not move unless subjected to upward force along the limiting channel groove 73. At this time, even if it is hit or simply lifted, the bottom ring 4 will not come off the limiting plate 7. During disassembly, lift handle 1 to raise the limiting post 41 from the bottom of the limiting channel groove 73, and then the limiting post 41 will descend diagonally along the inclined channel groove back to the entry channel groove 71; lift the device vertically, and the limiting post 41 will disengage from the entry channel groove 71, allowing the entire device to be quickly removed for easy use, maintenance, or replacement of the fire hydrant.

[0049] Example 2:

[0050] Based on Example 1, to further enhance anti-theft performance, a 2m long stainless steel chain can be connected between the top ring 2 and the base 5. One end of the chain is fixed to the top ring 2 with a padlock, and the other end is welded to the base 5. Even if the device is disassembled, it remains restrained by the chain, preventing the entire device from being stolen.

[0051] Example 3:

[0052] Spiral material: 60Si2MnA spring steel, quenched and tempered at medium temperature, hardness HRC40-45; Shape: Cylindrical spiral, outer diameter D1=240-260 mm, pitch P=45-55 mm, effective number of turns n=10-12; Both ends are tightly ground flat, with 1.5 turns to ensure that the coaxiality of the top ring 2 and bottom ring 4 after welding is ≤0.5 mm; The surface is shot peened and then electroplated with zinc-nickel alloy, with a coating thickness of 8-12 μm and resistance to neutral salt spray ≥500 h.

[0053] Top and bottom rings are made of Q345B hot-rolled steel plate with a thickness of t=6 mm. The outer diameter of the top ring is D2=D1+20 mm, and the outer diameter of the bottom ring is D3=D1+20 mm. The limiting post 41 is made of 45# steel, quenched and tempered, with a diameter of d=10 mm, a length of L=30 mm, and a 1×45° chamfer at the end. The limiting plate 7 is made of ZG270-500 cast steel, quenched and tempered. The thickness is t2=12 mm, and the outer diameter is D4=D3+60 mm. The width of the channel groove is W=d+1 mm=11 mm, and the chamfer at the groove opening is R1.5. The angle between the inclined channel groove 72 and the horizontal plane is α=30°, and the angle between the limiting channel groove 73 and the vertical line is β=5° to prevent natural dislodgement.

[0054] Handle material: Φ16 mm Q235B round steel, with a plastic coating thickness of 1.2 mm.

[0055] Lift the entire device by holding handle 1; insert the limiting post 41 into the entry channel groove 71, move it along the channel groove 71 to the bottom, and continue to move it diagonally upward along the inclined channel groove 72 to the end of the inclined channel groove 72; after releasing, the limiting post 41 will fall 5 mm down along the limiting channel groove 73 to the bottom, and will not move unless subjected to an upward force along the limiting channel groove 73. Disassembly: Lift handle 1 to raise the limiting post 41 from the bottom of the limiting channel groove 73, and then the limiting post 41 will descend diagonally along the inclined channel groove back to the entry channel groove 71; lift the device vertically, and the limiting post 41 will disengage from the entry channel groove 71, completing the disassembly.

[0056] Chain: 304 stainless steel, link diameter 4 mm, breaking tensile strength ≥20 kN; Lock: blade-type anti-theft padlock, lock beam diameter ≥8 mm; Connection method: M8 stainless steel eye bolts are welded on the top ring 2, and corresponding eye bolts are welded on the base 5. The padlock locks after the chain passes through the two eye bolts.

[0057] Test standard: JT / T 281-2007 (Test method for anti-collision performance of highway guardrail); Test conditions: A 1.5 t car impacts the middle of the spiral at a speed of 15 km / h; Results: Maximum dynamic displacement 120 mm, residual displacement <5 mm, can automatically rebound, no permanent deformation.

[0058] Ambient temperature: -40℃~+60℃; Design service life: ≥10 years; Suitable for outdoor fire hydrant protection in municipal roads, underground garages, logistics parks and other places.

[0059] Throughout this specification, the terms "an embodiment" or "an embodiment" mean that a specific feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the disclosed subject matter. Therefore, the phrases "in one embodiment" or "in an embodiment" appearing throughout this specification do not necessarily refer to the same embodiment. Furthermore, any suitable manner may be adopted to incorporate a specific feature, structure, or characteristic in one or more embodiments. It should be understood that this specification is not intended to limit the present invention. Rather, the exemplary embodiments are intended to cover alternatives, modifications, and equivalents that are included within the spirit and scope of the present invention as defined by the appended claims. Furthermore, numerous specific details are set forth in the detailed description of the exemplary embodiments to provide a comprehensive understanding of the claimed invention. However, those skilled in the art will understand that various embodiments may also be practiced without these specific details.

[0060] Although features and elements of these exemplary embodiments have been described in particular combination in the embodiments, each feature and element may be used alone without the other features and elements of the embodiments, or in combination with or without the other features and elements disclosed herein.

[0061] This written description uses examples, including the best mode, to disclose the present invention and enables any person skilled in the art to implement the present invention, including making and utilizing any device or system and performing any combined methods. The scope of patentability of the present invention is defined by the claims and may include other examples as would be apparent to a person skilled in the art. Such other examples are considered to be included within the scope of the claims if they have structural elements that are not different from the verbal language of the claims, or if they include structural elements equivalent to those described in the verbal language of the claims.

Claims

1. A protective structure for a fire hydrant, characterized in that, include: The device comprises a handle (1), a top ring (2), a spiral body (3), a bottom ring (4), a base (5), and a fire hydrant body (6). The spiral body (3) is a cylindrical spiral spring structure, with its two ends fixedly connected to the top ring (2) and the bottom ring (4), respectively. The lower surface of the bottom ring (4) is provided with at least two limiting posts (41). The base (5) is fixed to the ground and fitted around the fire hydrant body (6). The upper surface of the base (5) is provided with a limiting plate (7). The limiting plate (7) is provided with an entry channel groove (71), an inclined channel groove (72), and a limiting channel groove (73) connected in sequence, for the insertion and sliding of the limiting posts (41) to achieve quick installation and disassembly of the device.

2. The protective structure of the fire hydrant according to claim 1, characterized in that, The angle α between the inclined channel groove (72) and the horizontal plane is 30° to 60°, and the angle β between the limiting channel groove (73) and the vertical line is 0° to 10° to prevent natural dislodgement.

3. The protective structure of the fire hydrant according to claim 1, characterized in that, The spiral body (3) is made of 60Si2MnA spring steel, and is subjected to quenching and medium-temperature tempering treatment. The hardness is HRC40-45. The surface is shot-peened and electroplated with zinc-nickel alloy with a coating thickness of 8-12 μm.

4. The protective structure of the fire hydrant according to claim 1, characterized in that, The outer diameters of the top ring (2) and the bottom ring (4) are both 15-25 mm larger than the outer diameter of the spiral body (3), and the material is Q345B hot-rolled steel plate with a thickness of 6 mm.

5. The protective structure of the fire hydrant according to claim 1, characterized in that, The limiting post (41) is a quenched and tempered 45# steel part with a diameter d=10 mm, a length L=30 mm, and a chamfer of 1×45° at the end.

6. The protective structure of the fire hydrant according to claim 1, characterized in that, The handle (1) is formed by bending Φ16 mm round steel and dip-coating the surface with a coating thickness of 1.0-1.5 mm.

7. The protective structure of the fire hydrant according to claim 1, characterized in that, The limiting plate (7) is made of ZG270-500 cast steel, which has been heat treated and has a thickness of 10-15 mm.

8. The protective structure of the fire hydrant according to claim 1, characterized in that, A detachable chain and lock are provided between any point of the top ring (2), the spiral body (3), or the bottom ring (4) and any point of the base (5), the fire hydrant body (6), or the limiting plate (7) for the purpose of theft prevention.

9. The protective structure of the fire hydrant according to claim 8, characterized in that, The chain is made of 304 stainless steel, with a link diameter of 4 mm and a breaking tensile strength of ≥20 kN. The lock is a leaf-type anti-theft padlock.

10. The protective structure of the fire hydrant according to claim 1, characterized in that, After being struck by a 1.5 t vehicle at a speed of 15 km / h, the spiral (3) has a maximum dynamic displacement of ≤120 mm and a residual displacement of ≤5 mm, and can automatically rebound and reset without permanent deformation.

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