A trench excavation protection device

Abstract

The utility model relates to the technical field of trench construction, provide a kind of trench excavation protection device, including two symmetrical bottom plates, bottom plate is L type, the bottom end of bottom plate is provided with action wheel, the side of the mutual approach of two bottom plates is connected by adjustable connecting assembly;The sidewall of each bottom plate is fixedly connected with track bar, the track bar is slidably connected with sliding block, the top of sliding block is fixedly connected with vertical rod, the top of vertical rod is fixedly connected with movable seat;The side of the mutual approach of two movable seats is detachably provided with electric telescopic rod, the side of the mutual departure of two movable seats is respectively fixedly connected with protection support plate, with the characteristics of adjustable width, convenient movement, support continuous, stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of trench construction technology, specifically to a trench excavation protection device. Background Technology

[0002] In trench construction for municipal roads and other similar projects, steel plates or wooden planks are often used as temporary retaining walls to prevent soil collapse. However, existing retaining walls are mostly fixed structures, which have significant drawbacks: firstly, their width is fixed, making it difficult to flexibly adapt to trenches of different widths; secondly, in continuous excavation processes, they cannot move synchronously with the excavation face, and each section of support needs to be dismantled and reinstalled at the new work point, resulting in low construction efficiency, high labor intensity, and the inability to achieve continuous protection. Utility Model Content

[0003] The purpose of this utility model is to provide a trench excavation protection device to solve the problems of poor width adaptability, cumbersome disassembly and assembly, and inability to provide continuous support as the excavation progress is made in the existing technology.

[0004] To achieve the above objectives, the present invention provides a trench excavation protection device using the following technical solution: A trench excavation protection device includes two symmetrically arranged base plates, each base plate being L-shaped. Each base plate has a caster wheel at its bottom end. The two base plates are connected at their adjacent sides via an adjustable connecting assembly. A track rod is fixedly connected to the side wall of each base plate, and a slider is slidably connected to the track rod. A vertical rod is fixedly connected to the top of the slider, and a movable seat is fixedly connected to the top of the vertical rod. An electric telescopic rod is detachably installed on the adjacent side of the two movable seats, and protective support plates are fixedly connected to the opposite sides of the two movable seats.

[0005] As an optimization of trench excavation protection device, the adjustable connection assembly includes a threaded sleeve and a threaded rod. The threaded sleeve is fixedly embedded in the side wall of one of the base plates. One end of the threaded rod is threadedly connected to the threaded sleeve, and the other end of the threaded rod is rotatably connected to the side wall of the other base plate. A handle is provided at the end of the threaded rod near the threaded sleeve. A stop buckle is rotatably provided on the base plate for engaging the threaded rod.

[0006] As an optimization of trench excavation protection device, the adjustable connection assembly also includes several guide rods, one end of which is fixedly connected to the side wall of one of the base plates, and the other end of which is interlocked with the side wall of another base plate.

[0007] As an optimization of trench excavation protection device, the end of the electric telescopic rod is fixedly connected to a connecting block, the connecting block is inserted into the side wall of the movable seat, the movable seat is provided with a pin, the connecting block is provided with a cylindrical hole, and the pin is inserted into the cylindrical hole.

[0008] As an optimization of trench excavation protection device, two base plates are provided with inserts at equal intervals on one side of each other, and a grounding rod is detachably installed inside each insert.

[0009] As an optimization of trench excavation protection device, the top of the protective support plate is detachably equipped with an extension plate, and the side wall of the protective support plate is equipped with a connecting plate. The connecting plate connects the protective support plate and the extension plate together by bolts.

[0010] Compared to existing technologies, the advantages of this invention are as follows: By setting an adjustable connecting assembly consisting of a threaded rod, a threaded sleeve, and a guide rod, stepless adjustment of the distance between the two base plates is achieved, allowing the device to flexibly adapt to trenches of different widths and exhibiting strong versatility. Through the cooperation of the moving wheels and the electric telescopic rod, when movement is required, retracting the electric telescopic rod allows the protective support plate to detach from the trench sidewall, and the moving wheels easily push the entire device to a new work point, achieving continuous and rapid support during long-distance trench excavation, significantly reducing the workload of repeated disassembly and assembly, and improving construction efficiency. The electric telescopic rod is detachably connected to the movable seat via a connecting block and a pin, allowing for quick assembly and disassembly, facilitating transportation and storage. The grounding rod is anchored into the ground through a plug, providing reliable ground fixation for the device and preventing slippage and overturning during support. The protective support plate can be quickly fitted with an extension plate via slots, plugs, and connecting plates, easily handling trenches of different depths and further enhancing the adaptability of the device. In summary, this device effectively overcomes the drawbacks of traditional fixed retaining walls and is particularly suitable for trench protection operations during continuous excavation in municipal engineering. Attached Figure Description

[0011] 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.

[0012] Figure 1 This is a schematic diagram of the trench cross-section installation position of a trench excavation protection device according to an embodiment of this application; Figure 2 This is a top view of the two base plates in an embodiment of this application; Figure 3This is a cross-sectional schematic diagram of the movable seat and protective support plate in an embodiment of this application.

[0013] In the diagram: 1. Base plate; 11. Insert sleeve; 12. Grounding plug; 2. Adjustable connection assembly; 21. Threaded sleeve; 22. Threaded rod; 221. Throttle; 222. Stop buckle; 23. Guide rod; 3. Moving wheel; 4. Track rod; 5. Slider; 6. Vertical rod; 7. Movable seat; 71. Pin; 8. Electric telescopic rod; 80. Control box; 801. Switch; 802. Wire; 81. Connecting block; 82. Cylindrical hole; 9. Protective support plate; 91. Extension plate; 92. Connecting plate. Detailed Implementation

[0014] To make the technical solution and advantages of this utility model clearer, the present utility model and its beneficial effects will be described in further detail below with reference to specific embodiments and accompanying drawings. However, the embodiments of this utility model are not limited thereto.

[0015] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0017] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail below.

[0018] This application provides a trench excavation protection device, which adopts the following technical solution: Reference Figure 1 and Figure 2The trench excavation protection device includes two symmetrically arranged base plates 1, which are L-shaped and provide a stable support foundation. The bottom end of each base plate 1 is equipped with a movable wheel 3 via a wheel frame, facilitating the overall movement of the device. Furthermore, a scraper is installed above the movable wheel 3 at the bottom end of each base plate 1, with the bottom end of the scraper tangent to the top of the movable wheel 3. The scraper removes soil adhering to the movable wheel 3, effectively preventing soil accumulation from affecting the flexible movement of the movable wheel 3 and ensuring the stability and convenience of the device during relocation. The two base plates 1 are connected at their closest points via an adjustable connecting assembly 2, used to adjust the width between the two base plates 1 to accommodate trenches of different widths. Further, the adjustable connecting assembly 2 includes a threaded sleeve 21 and a threaded rod 22. The threaded sleeve 21 is fixedly embedded in the side wall of one of the base plates 1, and one end of the threaded rod 22 is threadedly connected to the threaded sleeve 21, while the other end of the threaded rod 22 is rotatably connected to the side wall of the other base plate 1. A handle 221 is provided at the end of the threaded rod 22 near the threaded sleeve 21. Rotating the handle 221 manually drives the threaded rod 22 to rotate. Due to the threaded engagement between the threaded rod 22 and the threaded sleeve 21, the rotational motion is converted into linear motion, thereby causing the two base plates 1 to move closer or further apart, achieving stepless adjustment of the overall width of the device. This operation is simple and labor-saving. Furthermore, a stop buckle 222 is rotatably installed on the side of the base plate 1 where the threaded sleeve 21 is installed. One side of the stop buckle 222 has a thread adapted to the screw. When the screw is rotated to the correct position and the width adjustment is completed, the stop buckle 222 is pushed downwards to engage with the side wall of the screw. At this time, the stop buckle 222 and the base plate 1 form a triangular support structure, effectively locking the threaded rod 22 and preventing it from loosening due to vibration or external force during construction, ensuring the stability of the support width. When further adjustment is needed, the stop buckle 222 is pushed upwards to separate it from the screw, thus releasing the limit.

[0019] In a preferred embodiment of this application, reference is made to Figure 1 and Figure 2 The adjustable connecting assembly 2 also includes several guide rods 23, which are distributed on both sides of the screw. One end of each guide rod 23 is fixedly connected to the side wall of one of the base plates 1, and the other end of the guide rod 23 is interlocked with the side wall of the other base plate 1. The guide rods 23 play a guiding and supporting role during the movement of the base plates 1, ensuring that the two base plates 1 always move in parallel, preventing skewness or jamming, and improving the stability and accuracy of the adjustment process.

[0020] Reference Figure 1 and Figure 2Each base plate 1 has several parallel track rods 4 welded and fixed to its sidewalls, and a slider 5 is slidably connected to the track rods 4. A vertical rod 6 is welded and fixed to the top of the slider 5, and a movable seat 7 is fixedly connected to the top of the vertical rod 6. The sliding cooperation between the slider 5 and the track rods 4 allows the movable seat 7 to move flexibly along the extension direction of the trench. An electric telescopic rod 8 is detachably installed on the side of the two movable seats 7 that are close to each other. A control box 80 is installed on the top of one of the movable seats 7. The control box 80 is equipped with a switch 801 and a wire 802. The control box 80 is connected to the electric telescopic rod 8 through the wire 802 to control the extension and retraction of the electric telescopic rod 8. By controlling the extension or retraction of the electric telescopic rod 8 through the switch 801, the two movable seats 7 can be moved away from or close to each other, thereby driving the protective support plate 9 to adhere to or detach from the trench sidewall, realizing a rapid switching of the support state. Protective support plates 9 are fixedly connected to the side of the two movable seats 7 that are far from each other. The protective support plates 9 are in direct contact with the trench sidewall and bear the soil pressure. The thrust of the electric telescopic rod 8 causes the protective support plate 9 to adhere tightly to the soil wall, forming an effective support surface and preventing soil collapse.

[0021] Specifically, refer to Figure 3 The end of the electric telescopic rod 8 is fixedly connected to a connecting block 81, which is inserted into a slot in the side wall of the movable seat 7. A pin 71 is provided on the movable seat 7, and a cylindrical hole 82 is provided on the connecting block 81. By inserting the pin 71 into the cylindrical hole 82, the electric telescopic rod 8 can be firmly installed between the two movable seats 7, thereby realizing the detachable installation of the electric telescopic rod 8 on the movable seat 7. This not only has a simple structure and quick assembly and disassembly, but also facilitates transportation and storage.

[0022] In a preferred embodiment of this application, reference is made to Figure 1 and Figure 2 Several inserts 11 are installed at equal intervals on the sidewalls of the two base plates 1 that are close to each other. The inserts 11 are staggered with the threaded rods 22 and guide rods 23, with a reasonable layout and no interference between them. A grounding rod 12 is detachably placed inside the insert 11. During trench support, the grounding rod 12 is inserted into the insert 11 and struck downwards forcefully so that its bottom end is embedded in the soil layer at the bottom of the trench. The grounding rod 12 firmly anchors the base plate 1 to the ground through the insert 11, effectively resisting the soil pressure transmitted from the protective support plate 9 during the support process, preventing the entire device from shifting or overturning, and significantly enhancing the stability and safety of the support.

[0023] In a preferred embodiment of this application, reference is made to Figure 1 and Figure 3The protective support plate 9 has a detachable extension plate 91 at its top to accommodate trenches of different depths. Specifically, the top surface of the protective support plate 9 has a slot, and the bottom end of the extension plate 91 has an integrally formed insert that matches the slot. The initial alignment and connection between the protective support plate 9 and the extension plate 91 are achieved through the tenon-and-mortise engagement between the insert and the slot. To further ensure the connection strength, a connecting plate 92 is also installed on the side wall of the protective support plate 9. The connecting plate 92 connects the protective support plate 9 and the extension plate 91 together with bolts, forming a reliable rigid connection and ensuring that the extension plate 91 will not loosen under stress.

[0024] The application process and implementation principle of this application embodiment are as follows: In use, first, adjust the distance between the two base plates 1 by rotating the handle 221 according to the width of the trench to be supported, until it is positioned appropriately across the trench. After adjustment, remove the stop buckle 222 to lock the threaded rod 22. Then, insert the connecting blocks 81 at both ends of the electric telescopic rod 8 into the slots of the two movable seats 7 respectively, and fix them with pins 71 to complete the installation of the electric telescopic rod 8. Move the device to the support point via the driving wheels 3, insert the grounding rod 12 into the insertion cylinder 11, and fix the base plate 1. Connect the power supply, and start the electric telescopic rod 8 through the control box 80 to extend it, pushing the two movable seats 7 away from each other, thereby causing the protective support plate 9 to tightly abut against the inner walls of both sides of the trench, forming stable support. If the trench depth is large, an extension plate 91 can be added to the protective support plate 9. When a section of trench construction is completed and needs to be moved forward, the electric telescopic rod 8 is slightly retracted, allowing the protective support plate 9 to detach from the trench sidewall. The grounding rod 12 is then pulled out, and the entire device can be easily moved to the next support point using the moving wheels 3 for further support. The entire process eliminates the need for repeated disassembly and reassembly of the main structure, enabling continuous and efficient workflow. This effectively solves the drawbacks of traditional fixed retaining walls, such as strong adaptability, inconvenient disassembly and assembly, and inability to operate continuously. It is particularly suitable for long-distance, continuous trench construction scenarios, significantly improving construction efficiency and safety.

[0025] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on this utility model are within the protection scope of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A trench excavation protection device, characterized in that, It includes two symmetrically arranged base plates (1), each base plate (1) is L-shaped, and each base plate (1) is provided with a driving wheel (3) at its bottom end. The two base plates (1) are connected to each other on their adjacent sides by an adjustable connecting assembly (2). Each base plate (1) is fixedly connected to a track rod (4) on its side wall, and a slider (5) is slidably connected to the track rod (4). A vertical rod (6) is fixedly connected to the top of the slider (5), and a movable seat (7) is fixedly connected to the top of the vertical rod (6). An electric telescopic rod (8) is detachably provided on the adjacent side of the two movable seats (7), and a protective support plate (9) is fixedly connected to the opposite side of the two movable seats (7).

2. The trench excavation protection device according to claim 1, characterized in that, The adjustable connection assembly (2) includes a threaded sleeve (21) and a threaded rod (22). The threaded sleeve (21) is fixedly embedded in the side wall of one of the base plates (1). One end of the threaded rod (22) is threadedly connected to the threaded sleeve (21), and the other end of the threaded rod (22) is rotatably connected to the side wall of the other base plate (1). A throttle (221) is provided at the end of the threaded rod (22) near the threaded sleeve (21). A stop buckle (222) is rotatably provided on the base plate (1) for engaging the threaded rod (22).

3. The trench excavation protection device according to claim 2, characterized in that, The adjustable connection assembly (2) also includes several guide rods (23), one end of which is fixedly connected to the side wall of one of the base plates (1), and the other end of which is interlocked with the side wall of another base plate (1).

4. The trench excavation protection device according to claim 1, characterized in that, The end of the electric telescopic rod (8) is fixedly connected to a connecting block (81), the connecting block (81) is inserted into the side wall of the movable seat (7), the movable seat (7) is provided with a pin (71), the connecting block (81) is provided with a cylindrical hole (82), and the pin (71) is inserted into the cylindrical hole (82).

5. The trench excavation protection device according to claim 1, characterized in that, Two base plates (1) are provided with inserts (11) at equal intervals on one side of each other, and a grounding rod (12) is detachably provided inside the insert (11).

6. The trench excavation protection device according to claim 1, characterized in that, The top of the protective support plate (9) is detachably provided with an extension plate (91), and the side wall of the protective support plate (9) is provided with a connecting plate (92). The connecting plate (92) is connected to the protective support plate (9) and the extension plate (91) by bolts.

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