A hydrant fastening device

Abstract

The utility model relates to a fire hydrant fastening device, including the upper base and lower base of opposite fixed setting along the vertical, the lower base is fixed with the spacer plate extending to the hydrant cap below, the upper base is opened with the threaded hole of hydrant switch bolt above in, the threaded hole is connected with the compression bolt extending to the hydrant switch bolt downwards through the thread, the compression bolt is coaxial with the switch bolt of hydrant. The utility model provides the installation support for compression bolt through the upper base setting, and utilizes the compression bolt and tightens the switch bolt of hydrant, avoids the problem that cannot close hydrant due to the thread damage of switch bolt, utilizes the cap restriction of lower base to go up simultaneously, guarantees the reliability to the switch bolt compression of hydrant.

Description

Technical Field

[0001] This utility model relates to the field of fire hydrant technology, and in particular to fire hydrants used outdoors, specifically a fire hydrant fastening device. Background Technology

[0002] Fire hydrants are essential fire-fighting facilities, providing a vital water supply for firefighting operations and forming an indispensable key component of public fire protection systems. Currently, fire hydrants are mainly divided into indoor and outdoor fire hydrants. Indoor fire hydrants are installed indoors and are less affected by the external environment, typically avoiding problems such as rust on their bolts. However, outdoor fire hydrants, being installed and used outdoors, are inevitably affected by the external environment.

[0003] Conventional outdoor fire hydrants typically control the opening and closing of their internal valves via a vertically mounted switch bolt (or valve stem). The upper end of this switch bolt is usually polygonal to allow for rotation with a specialized wrench.

[0004] However, because outdoor fire hydrants are exposed to harsh natural environments such as wind, sun, and rain for a long time, the connecting threads of the switch bolts are prone to corrosion. Once the threads are corroded, unscrewing them will damage the threads, causing "stripping". The switch bolts cannot be tightened again, thus failing to ensure the reliability of the switch bolts. As a result, the switch bolts are lifted up under water pressure, causing the switch to fail, making it difficult to close tightly, and causing water leakage at the fire hydrant. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing a fire hydrant fastening device that can tighten and secure the switch bolts of outdoor fire hydrants after stripping, ensuring reliable hydrant closure.

[0006] This utility model is achieved through the following technical solution: a fire hydrant fastening device is provided, including an upper base and a lower base that are fixedly arranged vertically. The lower base is fixedly provided with a limiting plate extending to the lower part of the fire hydrant cap. The upper base has a threaded hole located above the fire hydrant switch bolt. The threaded hole is connected by a threaded clamping bolt extending downward to the fire hydrant switch bolt. The clamping bolt is coaxial with the fire hydrant switch bolt.

[0007] This solution utilizes the cap to block the upward movement of the limiting plate, thereby preventing the upper and lower bases from moving upward as a whole. By tightening the bolt and the threaded hole, the switch bolt is pressed tight, preventing the switch bolt from moving upward, thus ensuring the reliability of closing the fire hydrant.

[0008] As an optimization, the clamping bolt is provided with a groove extending upward from the bottom surface. The inner shape of the groove is adapted to the turning part of the fire hydrant switch bolt, and the groove depth is less than or equal to the length of the turning part of the fire hydrant switch bolt. This optimized solution, by setting the groove, allows the switch bolt to be turned while rotating the clamping bolt, while also ensuring the clamping bolt presses down on the switch bolt.

[0009] As an optimization, the limiting plate has a notch adapted to the fire hydrant body, and the vertical projection of the clamping bolt is located within the vertical projection range of the notch. This optimization scheme, by setting the notch, allows the limiting plate to be locked onto the fire hydrant body, increasing the contact length between the limiting plate and the hydrant cap, thereby improving the limiting effect of the limiting plate and ensuring the clamping of the switch bolt.

[0010] As an optimization, the lower base includes the limiting plate and a connecting rod extending upward from the end of the limiting plate away from the notch, the connecting rod being fixedly connected to the limiting plate as a single unit. The lower base of this optimized solution is L-shaped, formed by the limiting plate and the connecting rod, resulting in a simple structure, easy manufacturing, and convenient avoidance of interference with the bolt cap.

[0011] As an optimization, the upper base has a plug extending laterally at one end facing the connecting rod, and the connecting rod has a socket adapted to the plug. This optimized solution achieves a plug-in connection between the upper and lower bases through the provided plug and socket, making installation more convenient.

[0012] As an optimization, the plug has a rectangular cross-section, and a limiting platform is fixed at the end of the plug away from the connecting rod, which is laterally opposite to the wall of the socket. The wall of the socket provides lateral limitation to the limiting platform. This optimized solution sets the plug cross-section to rectangular, avoiding relative rotation between the upper and lower bases, ensuring the reliability of the clamping bolt's clamping of the switch bolt, and facilitating plug installation by setting the limiting platform.

[0013] The beneficial effects of this utility model are as follows: the upper base provides installation support for the clamping bolt, and the clamping bolt is used to tighten the switch bolt of the fire hydrant, avoiding the problem of the fire hydrant being unable to be closed due to damage to the threads of the switch bolt. At the same time, the hydrant cap restricts the upward movement of the lower base, ensuring the reliability of tightening the switch bolt of the fire hydrant. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the upper base structure; Figure 3 This is a schematic diagram of the lower base structure; Figure 4 This is a schematic diagram of the clamping bolt structure; Figure 5 This is a schematic diagram of the structure of this utility model in use; As shown in the figure: 1. Tightening bolt, 2. Upper base, 3. Lower base, 4. Bolt body, 5. Bolt cap, 6. Limiting platform, 7. Insertion hole, 8. Connecting rod, 9. Limiting plate, 10. Notch, 11. Slot, 12. Plug. Detailed Implementation

[0015] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0016] like Figure 1 The fire hydrant fastening device shown includes an upper base 2 and a lower base 3 that are fixedly arranged vertically. The lower base is fixed with a limiting plate 9 that extends to the bottom of the fire hydrant cap 5. The cap 5 blocks the upward movement of the limiting plate, thereby preventing the overall structure formed by the upper base and the lower base from moving upward.

[0017] The upper base has a threaded hole located above the fire hydrant switch bolt. A clamping bolt 1, extending downwards to the fire hydrant switch bolt, is threaded into the threaded hole. The clamping bolt 1 is coaxial with the fire hydrant switch bolt. The shape of the tightening part of the clamping bolt matches that of the tightening part of the fire hydrant switch bolt, ensuring that the original fire hydrant-specific switch wrench can still be used after using this device, without the need for additional tools.

[0018] In order to drive the fire hydrant switch bolt to rotate during the downward movement of the clamping bolt and increase the utilization of the switch bolt thread, the clamping bolt in this embodiment is provided with a groove 11 extending upward from the bottom surface. The inner hole shape of the groove is adapted to the turning part of the fire hydrant switch bolt, and the groove depth is less than or equal to the length of the turning part of the fire hydrant switch bolt, so as to ensure that the bottom of the groove can apply downward pressure to the switch bolt.

[0019] The lower base 3 includes the aforementioned limiting plate 9 and a connecting rod 8 extending upward from the end of the limiting plate away from the notch. The connecting rod is fixedly connected to the limiting plate 9. In this embodiment, the upper base and the lower base are plugged and fixed. The end of the upper base facing the connecting rod is provided with a plug 12 extending laterally. The connecting rod is provided with a socket 7 adapted to the plug. The cross-section of the plug 12 is rectangular to prevent relative rotation between the upper base and the lower base. The end of the plug away from the connecting rod is fixed with a limiting platform 6 that is laterally opposite to the wall of the socket 7. The wall of the socket 7 forms a lateral limiting on the limiting platform 6. By setting the limiting platform, the installation limitation of the upper base is formed, which facilitates the connection between the upper base and the lower base.

[0020] The limiting plate 9 has a notch 10 that is adapted to the fire hydrant body. The vertical projection of the clamping bolt 1 is located within the vertical projection range of the notch. The notch is locked onto the fire hydrant body 4 to prevent the lower base from shaking and to facilitate the installation and positioning of the lower base.

[0021] In use, screw the clamping bolt 1 into the bolt hole of the upper base from top to bottom, and make the groove at the lower end of the clamping bolt fit into the screwing part of the fire hydrant switch bolt. Insert the lower base and the upper base together from the side, and then rotate the clamping bolt. First, the device is tightened by force. As the clamping bolt is rotated, the clamping bolt drives the fire hydrant switch bolt to rotate and press it tight, so as to achieve the purpose of closing the fire hydrant.

[0022] In this embodiment, the tightening bolt has the same pitch as the original switch bolt of the fire hydrant. When the switch bolt of the fire hydrant is severely stripped, this device does not need to be removed and can tighten the original switch bolt of the fire hydrant. If the stripping of the fire hydrant is minor, and the rear half of the original switch bolt is not stripped after the original switch bolt is tightened, this device can be removed after the original switch bolt is tightened in place.

[0023] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A fire hydrant fastening device, characterized in that: It includes an upper base (2) and a lower base (3) that are fixedly arranged vertically. The lower base is fixed with a limiting plate (9) extending below the fire hydrant cap (5). The upper base has a threaded hole located above the fire hydrant switch bolt. The threaded hole is connected by a clamping bolt (1) extending downward to the fire hydrant switch bolt. The clamping bolt (1) is coaxial with the fire hydrant switch bolt.

2. The fire hydrant fastening device according to claim 1, characterized in that: The clamping bolt has a groove (11) extending upward from the bottom surface. The inner hole shape of the groove is adapted to the turning part of the fire hydrant switch bolt, and the groove depth is less than or equal to the length of the turning part of the fire hydrant switch bolt.

3. The fire hydrant fastening device according to claim 1, characterized in that: The limiting plate (9) has a notch (10) adapted to the fire hydrant body, and the vertical projection of the clamping bolt (1) is located within the vertical projection range of the notch.

4. A fire hydrant fastening device according to claim 3, characterized in that: The lower base (3) includes the limiting plate (9) and a connecting rod (8) extending upward from the end of the limiting plate away from the notch. The connecting rod is fixedly connected to the limiting plate (9) as a whole.

5. A fire hydrant fastening device according to claim 4, characterized in that: The upper base has a plug (12) extending laterally at one end facing the connecting rod, and the connecting rod has a socket (7) adapted to the plug.

6. A fire hydrant fastening device according to claim 5, characterized in that: The plug (12) has a rectangular cross section. The end of the plug away from the connecting rod is fixed with a limiting platform (6) that is laterally opposite to the wall of the socket. The wall of the socket (7) forms a lateral limiting on the limiting platform (6).

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