Combined indoor fire hydrant cabinet
By using an adjustable lifting plate structure and positioning pins for positioning, the problem of wasted space and limited equipment placement in traditional fire hydrant boxes is solved, thereby improving the stability of the equipment and the space utilization rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENGGUANG FIRE TECH CO LTD
- Filing Date
- 2026-06-08
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional indoor fire hydrant boxes are fixed, integrated structures that cannot accommodate a variety of fire-fighting equipment, resulting in wasted space or limited equipment placement. Furthermore, their structural stability is poor, making them prone to loosening and shifting.
The adjustable lifting plate structure, through the meshing transmission of knobs, gears and racks, combined with limit holes and positioning pins, enables the height adjustment and fixation of the lifting plate, enhancing the flexibility and stability of equipment placement.
It enables flexible adaptation of the internal space of the fire hydrant box, avoiding space waste and equipment placement restrictions, and improving the stability of the equipment and the sealing of the box.
Smart Images

Figure CN224484790U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire protection equipment technology, and in particular to a combined indoor fire hydrant box. Background Technology
[0002] Indoor fire hydrant boxes are core supporting equipment in building fire protection systems. They are widely used in various building scenarios such as residential buildings, commercial buildings, and office buildings. They are mainly used to store fire hose reels, fire extinguishers, and other fire-fighting equipment, providing equipment support for emergency rescue in the event of a fire. They are important infrastructure for ensuring building fire safety and reducing fire losses, and play a key role in carrying out building fire protection work.
[0003] Currently, most traditional indoor fire hydrant boxes on the market are one-piece fixed structures with non-adjustable internal space dimensions. Due to the varying specifications and sizes of different fire-fighting equipment such as fire hose reels and fire extinguishers, the fixed internal space is difficult to accommodate diverse equipment placement needs, easily leading to wasted space for small equipment and inability to properly install large equipment. Furthermore, the traditional box's internal load-bearing structure has limited stability, and long-term use can cause the load-bearing plates to loosen and shift, affecting equipment placement stability and the box's normal use. To address these technical problems, this application proposes a modular indoor fire hydrant box. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a modular indoor fire hydrant box. Through an adjustable lifting plate structure, it flexibly adapts to different specifications of fire-fighting equipment, effectively optimizing the internal space of the box and eliminating space waste and placement limitations. Simultaneously, it is equipped with a rear auxiliary positioning structure that works in conjunction with the side limiting structure to improve the stability of the lifting plate installation, avoiding loosening and displacement. Furthermore, the structural design is reasonable, the equipment adjustment and operation are convenient, and it ensures the normal closure and use of the box.
[0005] To achieve the above objectives, the present invention provides the following technical solution: A modular indoor fire hydrant box includes a fire hydrant box shell. A sliding rod is fixedly connected to the inner wall of the fire hydrant box shell. Multiple limiting holes are opened on the inner wall of the fire hydrant box shell. A lifting plate is sleeved on the outer wall of the sliding rod. A knob is rotatably connected to the lifting plate. The knob is connected to a gear through a connecting rod. A slider is slidably connected inside the lifting plate. A limiting rod is fixedly connected to the slider. A rack is fixedly connected to one end of the limiting rod. The gear and rack are meshed. A spring is provided between the lifting plate and the slider. The outer end of the limiting rod is located inside the limiting hole. A positioning pin is provided on the rear inner wall of the fire hydrant box shell. A guide block is slidably connected inside the fire hydrant box shell. The positioning pin and the guide block are fixedly connected.
[0006] Furthermore, a second spring is sleeved on the outer periphery of the positioning pin, and the second spring abuts against the outer wall of the guide block.
[0007] Furthermore, the limiting rod has beveled surfaces on both the upper and lower sides of its end.
[0008] Furthermore, there are two of each of the slider and rack.
[0009] Furthermore, a fire hose reel is installed in the upper space of the fire hydrant box shell.
[0010] Furthermore, a door is hinged to the front side of the fire hydrant box housing.
[0011] This utility model has the following beneficial effects: In this invention, the height of the lifting plate can be quickly adjusted and fixed through the meshing transmission of a knob, gear, and rack, combined with a spring and a locking positioning structure. The size of the lower storage space inside the fire hydrant box can be flexibly adjusted according to the actual specifications and dimensions of fire extinguishers and other fire-fighting equipment, effectively adapting to different sizes of fire-fighting equipment. This avoids the space waste or equipment placement limitations of traditional fixed boxes, significantly improving the adaptability and utilization rate of the fire hydrant box's internal space.
[0012] In this invention, an auxiliary positioning structure consisting of a positioning pin, a guide block, and a spring is added to the inner rear wall of the housing. This structure works in conjunction with the locking structure of the limiting rods and limiting holes on both sides. After the height of the lifting plate is adjusted, the lifting plate can be auxiliaryly supported and positioned from the rear, improving the stability and load-bearing capacity of the lifting plate after it is fixed, and preventing the lifting plate from shifting or loosening due to long-term support of fire-fighting equipment. At the same time, the inclined structure of the limiting rod makes the adjustment operation smoother, and the optimized design of the lifting plate dimensions ensures the sealing and integrity of the door when closed. Attached Figure Description
[0013] Figure 1 This is a perspective view of a combined indoor fire hydrant box proposed in this utility model; Figure 2 This is a schematic diagram of the lifting plate structure of a combined indoor fire hydrant box proposed in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the image; Figure 4 This is a schematic diagram of the positioning pin structure of a combined indoor fire hydrant box proposed in this utility model.
[0014] Legend: 1. Knob; 2. Fire hydrant box housing; 3. Positioning pin; 4. Fire hose reel; 5. Limiting hole; 6. Box door; 7. Sliding rod; 8. Lifting plate; 9. Limiting rod; 10. Connecting rod; 11. Spring 1; 12. Sliding block; 13. Rack; 14. Gear; 15. Guide block; 16. Spring 2. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] Reference Figures 1-3 An embodiment of this utility model is provided: a combined indoor fire hydrant box, including a fire hydrant box shell 2, a slide rod 7 fixedly connected to the inner wall of the fire hydrant box shell 2, a plurality of limiting holes 5 opened on the inner wall of the fire hydrant box shell 2, a lifting plate 8 sleeved on the outer wall of the slide rod 7, a knob 1 rotatably connected to the lifting plate 8, the knob 1 being connected to a gear 14 through a connecting rod 10, a slider 12 slidably connected inside the lifting plate 8, a limiting rod 9 fixedly connected to the slider 12, a rack 13 fixedly connected to one end of the limiting rod 9, the gear 14 and the rack 13 being meshed, a spring 11 being provided between the lifting plate 8 and the slider 12, and the outer end of the limiting rod 9 being located inside the limiting hole 5; Specifically, a sliding rod 7 is vertically fixed inside the fire hydrant box housing 2, and multiple sets of corresponding limiting holes 5 are evenly distributed on the inner walls of both sides of the fire hydrant box housing 2. A lifting plate 8 is movably sleeved on the outside of the sliding rod 7, allowing for vertical lifting and sliding along the sliding rod 7. A knob 1 is rotatably mounted on the front of the lifting plate 8, and a connecting rod 10 passing through the lifting plate 8 is connected to the rear end of the knob 1. A gear 14 is fixedly assembled at the end of the connecting rod 10. Two sets of sliders 12 and racks 13 are symmetrically arranged inside the lifting plate 8. The racks 13 and gears 14 mesh with each other. A spring 11 connects the inner side of the slider 12 to the inner wall of the lifting plate 8. Under normal conditions, the spring 11 is in a relaxed state, pushing the slider 12 to slide outwards, causing the limiting rod 9 to extend and engage with the limiting hole 5, thus locking and fixing the lifting plate 8.
[0017] Reference Figures 2-4A positioning pin 3 is provided on the inner rear wall of the fire hydrant box housing 2. A guide block 15 is slidably connected inside the fire hydrant box housing 2. The positioning pin 3 and the guide block 15 are fixedly connected. A spring 16 is sleeved on the outer periphery of the positioning pin 3. The spring 16 abuts against the outer wall of the guide block 15. The upper and lower sides of the end of the limiting rod 9 are provided with inclined surfaces. There are two sliders 12 and two racks 13. A fire hose reel 4 is provided in the upper space of the fire hydrant box housing 2. A box door 6 is hinged to the front side of the fire hydrant box housing 2. Specifically, a positioning pin 3 is fixedly installed on the inner rear wall of the fire hydrant box housing 2. A guide block 15 is slidably fitted onto the outside of the positioning pin 3, and the guide block 15 slides in cooperation with the inner wall of the lifting plate 8. A spring 16 is sleeved on the outer periphery of the positioning pin 3, and the two ends of the spring 16 abut against the inner rear wall of the fire hydrant box housing 2 and the guide block 15, respectively. Inclined guide slopes are ground on the upper and lower sides of the outer end of the limiting rod 9 to facilitate the smooth entry and exit of the limiting rod 9 into the limiting hole 5 when the lifting plate 8 is adjusted. The upper cavity of the fire hydrant box housing 2 is fixedly equipped with a fire hose reel 4, and the lower part is the equipment placement cavity. The front of the fire hydrant box housing 2 is hinged to a closed box door 6. At the same time, the front and rear dimensions of the lifting plate 8 are smaller than the front and rear dimensions of the internal space of the fire hydrant box housing 2 to avoid interference problems when the box door 6 is closed.
[0018] Working Principle: Since various fire-fighting equipment comes in different sizes and specifications, fixed-size fire hydrant boxes can easily lead to wasted space or insufficient space to accommodate large fire-fighting equipment. Therefore, the lifting plate 8 is modified to be height-adjustable, allowing it to slide up and down along the sliding rod 7. The upper half of the fire hydrant box shell 2 is fixed with a fire hose reel 4, and the lower half is used to hold fire extinguishers and other equipment. Limiting rods 9 are provided on both sides of the lifting plate 8, corresponding to the limiting holes 5 on the inner walls of both sides of the fire hydrant box shell 2. A spring 11 pushes the slider 12 to engage the limiting rods 9 into the limiting holes 5, thus fixing the lifting plate 8. When vertical movement is required, the knob 1 at the front end of the lifting plate 8 can be rotated. The knob 1 drives the gear 14 to rotate via the connecting rod 10. The upper and lower racks 13 that mesh with it move closer to each other, causing the limiting rod 9 to retract inward, thus adjusting the lifting plate 8 up and down. The inner wall of the rear end of the fire hydrant box housing 2 is provided with a positioning pin 3, which provides support when the lifting plate 8 moves a certain distance up and down, assisting the limiting rods 9 on both sides to complete the positioning. The front end of the limiting rod 9 has inclined surfaces on both the upper and lower sides, and its outer wall is fixed with a guide block 15 that slides and connects to the inner wall of the lifting plate 8. The rear end of the guide block 15 is provided with a spring 16 as a support component of the guide block 15, which is sleeved on the outer wall of the positioning pin 3. The front and rear length of the lifting plate 8 is slightly less than the front and rear length of the usable space inside the fire hydrant box housing 2, so as to reserve a small amount of space for the knob 1 to facilitate the closing of the box door 6.
[0019] It is worth noting that the connection and fixing of the combined indoor fire hydrant box involved in the above embodiments are all based on the corresponding existing technologies according to the actual situation, so they will not be described in detail in the embodiments of this application.
[0020] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A modular indoor fire hydrant box, comprising a fire hydrant box shell (2), characterized in that, A sliding rod (7) is fixedly connected to the inner wall of the fire hydrant box housing (2). Multiple limiting holes (5) are provided on the inner wall of the fire hydrant box housing (2). A lifting plate (8) is fitted onto the outer wall of the sliding rod (7). A knob (1) is rotatably connected to the lifting plate (8). The knob (1) is connected to a gear (14) via a connecting rod (10). A slider (12) is slidably connected inside the lifting plate (8). A limiting rod (9) is fixedly connected to the slider (12). One end of the gear (14) is fixedly connected to a rack (13), and the gear (14) and the rack (13) are meshed together. A spring (11) is provided between the lifting plate (8) and the slider (12). The outer end of the limiting rod (9) is located inside the limiting hole (5). A positioning pin (3) is provided on the rear inner wall of the fire hydrant box housing (2). A guide block (15) is slidably connected inside the fire hydrant box housing (2). The positioning pin (3) and the guide block (15) are fixedly connected.
2. The combined indoor fire hydrant box according to claim 1, characterized in that: The positioning pin (3) is fitted with a spring (16) on its outer periphery, and the spring (16) abuts against the outer wall of the guide block (15).
3. A combined indoor fire hydrant box according to claim 1, characterized in that: The limiting rod (9) has inclined surfaces on both the upper and lower sides of its end.
4. A combined indoor fire hydrant box according to claim 1, characterized in that: Two sliders (12) and two racks (13) are provided.
5. A combined indoor fire hydrant box according to claim 1, characterized in that: A fire hose reel (4) is installed in the upper space of the fire hydrant box shell (2).
6. A combined indoor fire hydrant box according to claim 1, characterized in that: The fire hydrant box housing (2) is hinged to a door (6) on the front side.