Civil air defense construction backfilling device

By employing movable components and filter plate structures in the backfilling device of civil defense engineering buildings, the problem of uneven backfilling was solved, achieving uniform distribution of materials in the foundation pit and filtration of accumulated water and debris, thus ensuring the stability of the engineering structure and the smooth progress of the backfilling process.

CN224161084UActive Publication Date: 2026-04-24HUNAN NO 4 ENG CO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HUNAN NO 4 ENG CO
Filing Date
2025-02-21
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

In existing technologies, when backfill materials are delivered through a fixed-location pipeline system, it is difficult to achieve uniform distribution within the foundation pit, resulting in uneven backfilling. This can easily lead to problems such as ground settlement and cracks, affecting the stability and safety of the engineering structure.

Method used

The system employs moving components within the frame columns, including rack, pinion, and slider structures, driven by a motor, to achieve uniform distribution of backfill material. Simultaneously, filter plates and filter cylinders are installed to filter impurities in the accumulated water, ensuring the normal operation of the pumping system.

Benefits of technology

This achieved uniform distribution of backfill material, avoided uneven ground and settlement problems, improved the stability and safety of the engineering structure, and ensured the smooth progress of the backfilling process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of civil air defense engineering, and discloses a civil air defense engineering building backfilling device which comprises a frame column, a moving assembly is arranged in the frame column, and a dismounting assembly is arranged on the left side of the frame column. The moving assembly comprises a rack, the rack is slidably connected to the interior of the frame column through a movable plate, a motor is fixedly connected to the interior of the frame column, the output end of the motor is fixedly connected with a connecting column, the exterior of the connecting column is fixedly connected with a gear, and the gear is meshed with the rack. And the bottom of the movable plate is fixedly connected with a bottom plate. According to the utility model, the gear is driven to move through the connecting column, then the sliding column is driven to move outside the sliding rail, and the funnel cavity is driven to move, so that the problem that partial areas are uneven is avoided. And the stability and safety of an engineering structure can be guaranteed through uniform backfilling, and the problem of land subsidence caused by non-uniform backfilling is solved.
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Description

Technical Field

[0001] This utility model relates to the field of civil defense engineering technology, and in particular to a backfilling device for civil defense engineering buildings. Background Technology

[0002] With the continuous acceleration of urbanization, civil defense projects are playing an increasingly important role in urban construction. Backfilling plays a crucial role in the construction system of civil defense projects. The quality of this step directly affects the overall structural stability and service life of the project. Proper backfilling provides solid support and protection for the project, ensuring that civil defense projects can fulfill their protective functions in the face of various emergencies. Conversely, inadequate backfilling can lead to structural instability and increase potential safety risks. Therefore, the backfilling work of civil defense projects must be given high priority, and scientific and reasonable methods and advanced technologies must be adopted to ensure the quality and effectiveness of backfilling, laying a solid foundation for urban safety.

[0003] In existing technologies, pipeline systems are typically used to deliver backfill material into the excavation pit. However, the fixed location of the pipelines makes it difficult to achieve a uniform distribution of the backfill material within the pit. This easily leads to some areas being overfilled while others are underfilled. This uneven backfilling significantly impacts the stability and safety of the engineering structure. Overfilled areas are prone to excessive pressure, while underfilled areas lack sufficient support. Over time, this uneven backfilling can cause ground settlement, resulting in uneven ground surfaces. Furthermore, it easily leads to cracks, which not only affect the appearance of the project but also seriously threaten the overall structural safety. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a backfilling device for civil defense engineering buildings, which aims to improve the existing technology that uses a fixed-position pipeline system, which makes it impossible to achieve uniform distribution of backfill material in the foundation pit, making it prone to ground settlement and resulting in uneven ground.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A backfilling device for civil defense engineering buildings includes a frame column, a movable component is provided inside the frame column, and a disassembly component is provided on the left side of the frame column;

[0007] The moving component includes a rack, which is slidably connected to the inside of a frame column via a movable plate. A motor is fixedly connected inside the frame column, and a connecting column is fixedly connected to the output end of the motor. A gear is fixedly connected to the outside of the connecting column, and the gear meshes with the rack. A base plate is fixedly connected to the bottom of the movable plate, and a slider is fixedly connected to the bottom of the base plate. A funnel cavity is fixedly connected to the outside of the slider.

[0008] As a further description of the above technical solution:

[0009] The disassembly assembly includes a base, which is fixedly connected to the outside of the frame column. A filter cylinder is fixedly connected to the top of the base. A side plate is fixedly connected to the outside of the filter cylinder. A pull rod is slidably connected inside the side plate. A spring is sleeved on the outside of the pull rod. A baffle is fixedly connected to one end of the pull rod. A locking block is fixedly connected to one side of the baffle.

[0010] As a further description of the above technical solution:

[0011] The top of the filter cartridge is detachably connected to a top cover. A fixing block is fixedly connected to the outside of the top cover. An insertion hole is opened on the outside of the fixing block, and the outside of the locking block is inserted into the inside of the insertion hole.

[0012] As a further description of the above technical solution:

[0013] A filter plate is fixedly connected to the bottom of the top cover, and the filter plate is used to filter out impurities in the accumulated water.

[0014] As a further description of the above technical solution:

[0015] The inner side of the frame column is fixedly connected to a slide rail, and the inner side of the slider is slidably connected to the outside of the slide rail.

[0016] As a further description of the above technical solution:

[0017] A water tank is fixedly connected to the top of the frame column, a water pump is fixedly connected to the top inlet of the water tank, and a connecting pipe is fixedly connected to the extraction end of the water pump.

[0018] As a further description of the above technical solution:

[0019] One end of the connecting pipe is fixedly connected to the inside of the top cover, and a water pumping pipe is fixedly connected to the outside of the filter cylinder.

[0020] As a further description of the above technical solution:

[0021] One end of the spring is fixedly connected to the inner wall, and the other end of the spring is fixedly connected to the outer side of the baffle. The bottom of the frame column is fixedly connected to [something].

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the connecting column drives the gear to move, causing the gear to move along the teeth of the rack, which in turn drives the slider to move outside the slide rail and moves the funnel cavity, thus avoiding the problem of unevenness in some areas. Furthermore, uniform backfilling ensures the stability and safety of the engineering structure, reduces problems such as ground settlement and cracks caused by uneven backfilling, and extends the service life of civil defense projects.

[0024] 2. In this utility model, the filter plate prevents debris carried in the accumulated water from entering the water tank, ensuring the normal operation of the pumping system. At the same time, by pulling the lever, the baffle moves, causing the locking block to disengage from the insertion hole, and the filter plate can then be removed from the filter cylinder for cleaning. This effectively solves the problem of the impact of water accumulation and debris in the foundation pit on the backfilling work and ensures the smooth progress of the backfilling process. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the backfilling device for civil defense engineering buildings proposed in this utility model.

[0026] Figure 2 This is a schematic diagram of the slide rail structure of the civil defense engineering building backfill device proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the top cover of the backfilling device for civil defense engineering buildings proposed in this utility model;

[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0029] Legend:

[0030] 1. Frame column; 2. Movable plate; 201. Rack; 202. Motor; 203. Connecting column; 204. Gear; 205. Base plate; 206. Slider; 207. Slide rail; 3. Water tank; 301. Water pump; 302. Connecting pipe; 303. Top cover; 304. Filter plate; 305. Filter cylinder; 306. Side plate; 307. Tie rod; 308. Spring; 309. Baffle; 310. Locking block; 311. Fixing block; 312. Insertion hole; 4. Base; 5. Water suction pipe; 6. Funnel cavity. Detailed Implementation

[0031] 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.

[0032] Reference Figures 1-2 This utility model provides an embodiment of a backfilling device for civil defense engineering buildings, including a frame column 1. The frame column 1 has a movable component inside, allowing the funnel cavity 6 to be moved during backfilling. A disassembly component is provided on the left side of the frame column 1, allowing debris in the accumulated water to be blocked by a filter plate, thereby ensuring the normal operation of the pumping system.

[0033] The moving component includes a rack 201, which is slidably connected to the inside of the frame column 1 via a movable plate 2. A motor 202 is fixedly connected inside the frame column 1, and a connecting column 203 is fixedly connected to the output end of the motor 202. A gear 204 is fixedly connected to the outside of the connecting column 203. The connecting column 203 drives the rotation of the motor 202, which in turn drives the gear 204 to rotate. The gear 204 meshes with the rack 201, allowing the rack 201 to move flexibly. A base plate 205 is fixedly connected to the bottom of the movable plate 2, and a slider 206 is fixedly connected to the bottom of the base plate 205. A funnel cavity 6 is fixedly connected to the outside of the slider 206. A sliding column 204 is rotatably connected to one end of the connecting column 203, allowing it to move synchronously with the gear 201. A fixed plate 206 is fixedly connected to the outside of the sliding column 204, allowing the sliding column 204 to connect with the funnel cavity 6. The fixed plate 206 is externally fixedly connected to the funnel cavity 6, which drives the funnel cavity 6 to move stably and evenly delivers the material into the pit through the opening at its bottom, thus avoiding the problem of unevenness in some areas.

[0034] Reference Figure 1 , Figures 3-4 The disassembly assembly includes a base 4, which is fixedly connected to the outside of the frame column 1, providing a support position for the filter cartridge 305. The filter cartridge 305 is fixedly connected to the top of the base 4, allowing accumulated water to enter the filter cartridge 305 and be filtered by the internal filter plate 304 to remove impurities. A side plate 306 is fixedly connected to the outside of the filter cartridge 305, and a pull rod 307 is slidably connected inside the side plate 306. A spring 308 is fitted around the outside of the pull rod 307, allowing it to move when needed to disassemble and install the filter plate 304. The tension of the spring 308 provides a reset function for the pull rod 307. A baffle 309 is fixedly connected to one end of the pull rod 307, allowing the baffle 309 to move synchronously when the pull rod 307 is pulled.

[0035] A locking block 310 is fixedly connected to the outside of the baffle 309 to secure the filter plate 304. A top cover 303 is detachably connected to the top of the filter cylinder 305. The sealed connection between the top cover 303 and the filter cylinder 305 ensures no leakage during pumping, guaranteeing the filtration effect. A fixing block 311 is fixedly connected to the outside of the top cover 303. An insertion hole 312 is provided on the outside of the fixing block 311. The locking block 310 is inserted into the insertion hole 312, allowing it to be tightly inserted and securing the filter plate 304. The filter plate 304 is fixedly connected to the bottom of the top cover 303. The filter plate 304 filters impurities in the accumulated water, preventing them from entering the water tank 3 and ensuring the normal operation of the pumping system.

[0036] Reference Figure 2 A slide rail 207 is fixedly connected to the inner side of the frame column 1, and a slider 206 is slidably connected to the outside of the slide rail 207. The slide rail 207 provides a track and guide for the slider 206 to move. A water tank 3 is fixedly connected to the top of the frame column 1 to store the water accumulated in the foundation pit. A water pump 301 is fixedly connected to the top inlet of the water tank 3 to provide power for pumping water. A connecting pipe 302 is fixedly connected to the extraction end of the water pump 301. One end of the connecting pipe 302 is fixedly connected to the inner side of the top cover 303 to transmit the suction force generated by the water pump 301 to the filter cartridge 305.

[0037] A water pumping pipe 5 is fixedly connected to the outside of the filter cylinder 305 to pump water accumulated in the foundation pit into the filter cylinder 305. One end of the spring 308 is fixedly connected to the inner wall of the side plate 306, and the other end of the spring 308 is fixedly connected to the outside of the baffle 309. When the pull rod 307 is released, the tension of the spring 308 can push the pull rod 307 to its original position. The bottom of the frame column 1 is fixedly connected to the movable wheel 7, which facilitates moving the device to the top of the designated foundation pit.

[0038] Working principle: First, the frame column 1 is moved to the top of the pit by the moving wheel 7. Then, the motor 202 is started, which causes the connecting column 203 to drive the gear 204 to rotate. This causes the gear 204 to move along the teeth of the rack 201. At this time, the bottom plate 205 drives the slider 206 to move synchronously on the slide rail 207, which in turn drives the funnel cavity 6 to move. This allows the backfill material inside the funnel cavity 6 to be evenly placed into the pit, thus avoiding the problem of unevenness in some areas.

[0039] Secondly, before the backfill material is added, the water in the foundation pit needs to be pumped out. At this time, the water pump 301 is started, and the suction force is generated in the filter cylinder 305 through the connecting pipe 302. The water in the foundation pit is pumped into the filter cylinder 305 through the water pumping pipe 5. The filter plate 304 in the filter cylinder 305 blocks the debris carried by the water from entering the water tank 3 through the connecting pipe 302. However, when it is necessary to remove the debris attached to the filter plate 304, the pull rod 307 is pulled, which in turn moves the baffle 309. At this time, the spring 308 is compressed, and the baffle 309 causes the locking block 310 to disengage from the insertion hole 312. Then the filter plate 304 can be removed from the filter cylinder 305 through the top cover 303, so that the attached debris can be cleaned.

[0040] Finally, it should be noted that 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 backfilling device for civil defense engineering buildings, comprising frame columns (1), characterized in that: The frame column (1) is provided with a movable component inside, and a disassembly component is provided on the left side of the frame column (1). The moving component includes a rack (201), which is slidably connected to the inside of the frame column (1) via a movable plate (2). A motor (202) is fixedly connected inside the frame column (1). A connecting column (203) is fixedly connected to the output end of the motor (202). A gear (204) is fixedly connected to the outside of the connecting column (203). The gear (204) meshes with the rack (201). A base plate (205) is fixedly connected to the bottom of the movable plate (2). A slider (206) is fixedly connected to the bottom of the base plate (205). A funnel cavity (6) is fixedly connected to the outside of the slider (206).

2. The backfilling device for civil defense engineering construction according to claim 1, characterized in that: The disassembly assembly includes a base (4), which is fixedly connected to the outside of the frame column (1). A filter cylinder (305) is fixedly connected to the top of the base (4). A side plate (306) is fixedly connected to the outside of the filter cylinder (305). A pull rod (307) is slidably connected inside the side plate (306). A spring (308) is sleeved on the outside of the pull rod (307). A baffle (309) is fixedly connected to one end of the pull rod (307). A locking block (310) is fixedly connected to one side of the baffle (309).

3. The backfilling device for civil defense engineering buildings according to claim 2, characterized in that: The top of the filter cartridge (305) is connected to a top cover (303) by means of disassembly. A fixing block (311) is fixedly connected to the outside of the top cover (303). An insertion hole (312) is opened on the outside of the fixing block (311). The outside of the locking block (310) is inserted into the inside of the insertion hole (312).

4. The backfilling device for civil defense engineering structures according to claim 3, characterized in that: A filter plate (304) is fixedly connected to the bottom of the top cover (303), and the filter plate (304) is used to filter impurities in the accumulated water.

5. The backfilling device for civil defense engineering structures according to claim 1, characterized in that: The inner side of the frame column (1) is fixedly connected to a slide rail (207), and the inner side of the slider (206) is slidably connected to the outside of the slide rail (207).

6. The backfilling device for civil defense engineering structures according to claim 2, characterized in that: A water tank (3) is fixedly connected to the top of the frame column (1), a water pump (301) is fixedly connected to the top inlet of the water tank (3), and a connecting pipe (302) is fixedly connected to the extraction end of the water pump (301).

7. The backfilling device for civil defense engineering construction according to claim 6, characterized in that: One end of the connecting pipe (302) is fixedly connected to the inside of the top cover (303), and a water pumping pipe (5) is fixedly connected to the outside of the filter cylinder (305).

8. The backfilling device for civil defense engineering construction according to claim 2, characterized in that: One end of the spring (308) is fixedly connected to the inner wall of the side plate (306), and the other end of the spring (308) is fixedly connected to the outer side of the baffle (309). The bottom of the frame column (1) is fixedly connected to a movable wheel (7).