Outdoor foam anti-collision bolt
By using a split fire hydrant body and elastic connectors to form a buffer structure, the problem of fire hydrants being susceptible to impact is solved, impact protection is achieved, and the stability and durability of fire hydrants are enhanced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN MINSHAN FIRE PROTECTION CO LTD
- Filing Date
- 2025-04-14
- Publication Date
- 2026-05-08
AI Technical Summary
Traditional outdoor fire hydrants are easily hit by vehicles in busy traffic areas, causing the hydrant body to bend or break, lacking effective impact protection.
The upper and lower fire hydrant bodies are designed as separate units, which, together with the inner and outer rings and elastic connectors, form a buffer space. The S-shaped elastic plate, auxiliary ball, and buffer spring are used for buffering to reduce the direct transmission of external forces to the fire hydrant body.
It effectively reduces bending and breakage of fire hydrants when impacted, provides impact protection, and ensures the stability and service life of fire hydrants.
Smart Images

Figure CN224213434U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire hydrant technology, specifically to an outdoor foam anti-collision hydrant. Background Technology
[0002] Outdoor fire hydrants are water supply facilities installed on the fire water supply network outside buildings. They are mainly used by fire trucks to draw water from the municipal water supply network or the outdoor fire water supply network for fire fighting. They can also be directly connected to fire hoses and nozzles to extinguish fires. They are one of the important fire-fighting facilities for fighting fires.
[0003] Outdoor fire hydrants are usually installed on both sides of roads or near parking lots to provide water for fire trucks in public places. However, when fire hydrants are installed on both sides of roads or in parking lots, especially in busy traffic areas, they are easily collided with by vehicles (e.g., reversing, losing control while turning, or being in the driver's blind spot). Traditional outdoor fire hydrants do not have anti-collision buffer functions, so the hydrant body is prone to bending or breaking after being impacted. Therefore, there is a need for an anti-collision fire hydrant that can reduce the impact force of external forces to protect the outdoor fire hydrant body. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings and deficiencies of the existing technology by providing an outdoor foam anti-collision hydrant that can reduce the impact force of external forces to protect the outdoor fire hydrant body.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: an outdoor foam anti-collision hydrant, comprising an upper fire hydrant body and a lower fire hydrant body separately disposed, a connecting device disposed between the upper fire hydrant body and the lower fire hydrant body, a lifting inner ring disposed on the outer periphery of the lower fire hydrant body, an outer ring body disposed on the outer periphery of the lifting inner ring, a buffer space formed between the lifting inner ring and the outer ring body, and an elastic connecting member disposed between the lifting inner ring and the outer ring body and located within the buffer space.
[0006] A further improvement is made to the connecting device, which includes six mounting slots equidistantly arranged in a ring on the upper end face of the lower fire hydrant body, six mounting plates equidistantly arranged in a ring on the lower end face of the upper fire hydrant body, connecting side holes on each mounting plate, threaded side holes on the side end face of each lower fire hydrant body that communicate with the mounting slots and correspond to the positions of the connecting side holes, connecting bolts threaded to the side end face of the lower fire hydrant body and located in each threaded side hole, and engaging blocks disposed on the connecting bolts and clearance-fitted with the connecting side holes.
[0007] A further improvement is that the elastic connector includes two connecting blocks respectively disposed on the outer wall of the lifting inner ring and the inner wall of the outer ring body, an S-shaped elastic plate disposed between the two connecting blocks, and an auxiliary ball respectively disposed between the S-shaped elastic plate and the outer wall of the lifting inner ring and the inner wall of the outer ring body. The two connecting blocks, the S-shaped elastic plate, and the auxiliary ball are all located within the buffer space.
[0008] A further improvement is that the S-shaped elastic plate is a rubber plate.
[0009] A further improvement is that the auxiliary sphere includes an elastic sphere and a deformation opening formed on the elastic sphere, wherein the deformation opening is an elliptical opening.
[0010] A further improvement is that the elastic sphere is a rubber sphere or a PU sphere.
[0011] A further improvement is that two contact blocks are symmetrically arranged on the elastic sphere within the deformation opening. The two contact blocks are fixedly arranged on the elastic sphere and are made of rubber, silicone, PU, or polyurethane foam.
[0012] A further improvement is that several buffer springs are provided between the inner lifting ring and the outer ring body, and the buffer springs are located in the buffer space.
[0013] After adopting the above technical solution, the beneficial effects of this utility model are as follows: when the fire hydrant is located on both sides of the road or near the parking lot, and the outer ring is impacted by external force, the outer ring deforms inward through the buffer space. At this time, the S-shaped elastic plate deforms in the buffer space and is further buffered by the auxiliary ball, reducing the impact force transmitted to the fire hydrant body. This allows the fire hydrant to have an anti-collision buffer function, so that the fire hydrant body is not prone to bending or breaking after being impacted.
[0014] Further benefits: During installation, the mounting slots and mounting plates of the upper and lower fire hydrant bodies are aligned and inserted. After insertion, the connecting side hole is pressed down to align with the threaded side hole. Then, the locking block is inserted from the threaded side hole until the connecting bolt and the threaded side hole are fully engaged. At this point, the locking block restricts the longitudinal separation of the upper and lower fire hydrant bodies. This connection method facilitates the installation and removal of the lifting inner ring on the fire hydrant body during installation.
[0015] Further effects: When the S-shaped elastic plate deforms within the buffer space, the elastic sphere is compressed and deformed. The deformation space of the elastic sphere is increased through the deformation opening. When the elastic sphere deforms, the two contact blocks come into contact and squeeze, thus performing secondary elastic buffering.
[0016] Further effect: When the outer ring is impacted by an external force and deforms into the buffer space, the buffer spring can buffer the deformation of the outer ring, reducing the phenomenon of external force directly impacting the fire hydrant body. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a front sectional view of the present invention;
[0020] Figure 3 This is a top view of the lower fire hydrant body and mounting slot in this utility model;
[0021] Figure 4 It corresponds Figure 2 Enlarged view of part A;
[0022] Figure 5 This is a top sectional view of the elastic connector in this utility model;
[0023] Figure 6 This is a cross-sectional view of the auxiliary sphere in this utility model.
[0024] Explanation of reference numerals in the attached drawings: 1. Upper fire hydrant; 2. Lower fire hydrant; 3. Lifting inner ring; 4. Outer ring body; 5. Buffer space; 6. Mounting slot; 7. Mounting insert plate; 8. Connecting side hole; 9. Threaded side hole; 10. Connecting bolt; 11. Clamping block; 12. Connecting block; 13. S-shaped elastic plate; 14. Auxiliary ball; 141. Elastic ball; 142. Deformation opening; 143. Contact block; 144. Buffer spring. Detailed Implementation
[0025] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.
[0026] See Figures 1 to 6As shown, the technical solution adopted in this specific embodiment is: an outdoor foam anti-collision hydrant, comprising an upper fire hydrant body 1 and a lower fire hydrant body 2 separately arranged, a connecting device disposed between the upper fire hydrant body 1 and the lower fire hydrant body 2, a lifting inner ring 3 disposed on the outer periphery of the lower fire hydrant body 2, an outer ring body 4 disposed on the outer periphery of the lifting inner ring 3, a buffer space 5 formed between the lifting inner ring 3 and the outer ring body 4, and an elastic connector disposed between the lifting inner ring 3 and the outer ring body 4 and located within the buffer space 5. The lifting inner ring 3 is made of a plastic material, such as iron or nylon, while the outer ring body 4 is made of an elastic material, such as rubber or polyurethane, or can also be made of plastic materials such as aluminum or copper.
[0027] The connecting device includes six mounting slots 6 equidistantly arranged in a ring on the upper end face of the lower fire hydrant body 2; six mounting plates 7 equidistantly arranged in a ring on the lower end face of the upper fire hydrant body 2; connecting side holes 8 on each mounting plate 7; threaded side holes 9 on each side end face of the lower fire hydrant body 2 that communicate with the mounting slots 6 and correspond to the positions of the connecting side holes 8; connecting bolts 10 threadedly connected to the side end faces of the lower fire hydrant body 2 and located in each threaded side hole 9; and engaging blocks 11 on the connecting bolts 10 that are clearance-fitted with the connecting side holes 8. Two annular sealing rings are also provided between the lower end face of the upper fire hydrant body 1 and the upper end face of the lower fire hydrant body 2, and the two annular sealing rings are located on both sides of the mounting plates 7. The annular sealing strip is used to seal the gap between the upper fire hydrant body 1 and the lower fire hydrant body 2 after the mounting plate 7 is inserted into the mounting slot 6 and the engaging block 11 is clearance-fitted with the connecting side hole 8. The diameter of the connecting side hole 8 is smaller than the diameter of the threaded side hole 9. The height of the lifting inner ring 3 and the outer ring body 4 can be lower than the height of the mounting slot 6. When the outer ring body 4 needs to be deformed and replaced, simply remove the entire outer ring body 4 and the lifting inner ring 3 from the lower fire hydrant body 2 for replacement.
[0028] The elastic connector includes two connecting blocks 12 respectively disposed on the outer wall of the inner lifting ring 3 and the inner wall of the outer ring body 4, an S-shaped elastic plate 13 disposed between the two connecting blocks 12, and an auxiliary ball 14 respectively disposed between the S-shaped elastic plate 13 and the outer wall of the inner lifting ring 3 and the inner wall of the outer ring body 4. The two connecting blocks 12, the S-shaped elastic plate 13, and the auxiliary ball 14 are all located within the buffer space 5. The two connecting blocks 12 are fixedly installed on the outer wall of the inner lifting ring 3 and the inner wall of the outer ring body 4 by adhesive, hot-melt bonding, or welding. The auxiliary ball 14 is positioned at the semi-circular arc position of the S-shaped elastic plate 13. The auxiliary ball 14 is connected to the inner lifting ring 3 and the outer ring body 4 by a plate or block.
[0029] The S-shaped elastic plate 13 is a rubber plate.
[0030] The auxiliary sphere 14 includes an elastic sphere 141 and a deformation opening 142 formed on the elastic sphere 141, wherein the deformation opening 142 is an elliptical opening.
[0031] The elastic sphere 141 is a rubber sphere or a PU sphere.
[0032] Two contact blocks 143 are symmetrically arranged within the deformation opening 142 on the elastic sphere 141. The two contact blocks 143 are fixedly mounted on the elastic sphere 141 and are made of rubber, silicone, PU, or polyurethane foam. The contact blocks 143 are fixedly installed on the elastic sphere 141 by adhesive or hot-melt bonding. The elastic sphere 141, deformation opening 142, and contact blocks 143 are integrally formed or 3D printed, in which case the contact blocks 143 and the elastic sphere 141 are all made of the same material.
[0033] Several buffer springs 144 are also provided between the inner lifting ring 3 and the outer ring body 4, and the buffer springs 144 are located in the buffer space 5. The number of buffer springs 144 is the same as the number of S-shaped elastic plates 13. Several S-shaped elastic plates 13 are provided and are arranged in a ring at equal intervals between the lifting ring body and the outer ring body 4.
[0034] The working principle of this utility model is as follows: When the fire hydrant is located on both sides of the road or near the parking lot, and the outer ring 4 is impacted by external force, the outer ring 4 deforms inward through the buffer space 5. At this time, the S-shaped elastic plate 13 deforms in the buffer space 5 and is further buffered by the auxiliary ball 14, reducing the impact force transmitted to the fire hydrant body. This allows the fire hydrant to have anti-collision buffer function, so that the fire hydrant body is not easy to bend or break after being impacted.
[0035] During installation, align the mounting slots 6 and mounting plates 7 of the upper fire hydrant body 1 and the lower fire hydrant body 2 and insert them. After insertion, press down to align the positions of the connecting side hole 8 and the threaded side hole 9. Then insert the locking block 11 into the threaded side hole 9 until the connecting bolt 10 is fully engaged with the threaded side hole 9. At this time, the locking block 11 restricts the longitudinal separation of the upper fire hydrant body 1 and the lower fire hydrant body 2. Through this connection method, it is convenient to install and remove the lifting inner ring 3 on the fire hydrant body during installation.
[0036] When the S-shaped elastic plate 13 deforms in the buffer space 5, the elastic ball 141 is compressed and deformed. The deformation space of the elastic ball 141 is increased through the deformation opening 142. When the elastic ball 141 deforms, the two contact blocks 143 come into contact and squeeze, thereby performing secondary elastic buffering.
[0037] When the outer ring 4 is impacted by an external force and deforms into the buffer space 5, the buffer spring 144 can buffer the deformation of the outer ring 4, reducing the phenomenon of the external force directly impacting the fire hydrant body.
[0038] This utility model aims to protect the product's structure. The model numbers of the individual components are not protected by this utility model and are common knowledge. Any component on the market that can achieve the functions described above can be used as an outdoor foam anti-collision bolster. Therefore, the model numbers and other parameters of the components are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of the various components.
[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions provided are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents. Any aspects of this utility model not detailed herein are well-known to those skilled in the art.
Claims
1. An outdoor foam anti-collision bolster, characterized in that: It includes a separate upper fire hydrant body and a lower fire hydrant body, a connecting device disposed between the upper fire hydrant body and the lower fire hydrant body, a lifting inner ring disposed on the outer periphery of the lower fire hydrant body, an outer ring disposed on the outer periphery of the lifting inner ring, a buffer space formed between the lifting inner ring and the outer ring, and an elastic connector disposed between the lifting inner ring and the outer ring and located within the buffer space.
2. The outdoor foam anti-collision bolster according to claim 1, characterized in that: The connecting device includes six mounting slots equidistantly arranged in a ring on the upper end face of the lower fire hydrant body, six mounting plates equidistantly arranged in a ring on the lower end face of the upper fire hydrant body, connecting side holes on each mounting plate, threaded side holes on the side end face of each lower fire hydrant body that communicate with the mounting slots and correspond to the positions of the connecting side holes, connecting bolts threaded to the side end face of the lower fire hydrant body and located in each threaded side hole, and engaging blocks disposed on the connecting bolts and clearance-fitted with the connecting side holes.
3. An outdoor foam anti-collision bolster according to claim 1, characterized in that: The elastic connector includes two connecting blocks respectively disposed on the outer wall of the lifting inner ring and the inner wall of the outer ring body, an S-shaped elastic plate disposed between the two connecting blocks, and an auxiliary ball respectively disposed between the S-shaped elastic plate and the outer wall of the lifting inner ring and the inner wall of the outer ring body. The two connecting blocks, the S-shaped elastic plate, and the auxiliary ball are all located within the buffer space.
4. An outdoor foam anti-collision bolster according to claim 3, characterized in that: The S-shaped elastic plate is a rubber plate.
5. An outdoor foam anti-collision bolster according to claim 3, characterized in that: The auxiliary sphere includes an elastic sphere and a deformation opening formed on the elastic sphere, wherein the deformation opening is an elliptical opening.
6. An outdoor foam anti-collision bolster according to claim 5, characterized in that: The elastic sphere is a rubber sphere or a PU sphere.
7. An outdoor foam anti-collision bolster according to claim 5, characterized in that: Two contact blocks are symmetrically arranged on the elastic sphere within the deformation opening. The two contact blocks are fixedly arranged on the elastic sphere and are made of rubber, silicone, PU, or polyurethane foam.
8. An outdoor foam anti-collision bolster according to claim 3, characterized in that: Several buffer springs are also provided between the inner lifting ring and the outer ring body, and the buffer springs are located in the buffer space.