A trenching collapse prevention device

Abstract

This utility model relates to the field of pipeline construction technology, specifically to a trench excavation anti-collapse device. It includes a support frame, a side plate system, and a moving system. The side plate system comprises side columns and multiple sets of side plates. The side columns are vertically fixed to both sides of the support frame and have vertical grooves on their surfaces. The two ends of the side plates are slidably connected to the side columns through the vertical grooves. Multiple side plates are inserted one by one into the vertical grooves to form protective walls of different heights. Hydraulic support rails are also provided on the inner surface of the support frame. Hydraulic support units are connected between the left and right opposing hydraulic support rails and slide up and down along the hydraulic support rails. The moving system includes skids located at the bottom of the front and rear ends of the support frame and lifting lugs installed in the upper middle part. A top protection system is also provided on the top of the side columns. This trench excavation anti-collapse device is quick to install, highly adaptable, reusable, and safe and reliable.

Description

Technical Field

[0001] This utility model relates to the field of pipeline construction technology, specifically to a device for preventing collapse during trench excavation. Background Technology

[0002] During trench excavation, especially in complex geological conditions such as loose soil, high water content, or proximity to existing structures, trench sidewalls are prone to collapse. This not only threatens the safety of workers but may also bury equipment, cause instability of adjacent foundations, and delay the construction period. Traditional anti-collapse measures mainly rely on slope excavation and temporary supports: slope excavation requires a large working space, which is difficult to implement in densely populated urban underground pipeline areas or narrow sites; temporary supports, such as wooden planks combined with steel pillars and sheet piles, have problems such as cumbersome installation and dismantling, low efficiency, poor adaptability, difficulty in adapting to different trench widths and depths, and large material waste. Utility Model Content

[0003] The purpose of this utility model is to solve the problems existing in the above-mentioned background technology and provide a collapse prevention device that can be quickly installed, is highly adaptable, reusable and safe and reliable.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a trench excavation anti-collapse device, comprising a support frame, a side plate system, and a moving system. The side plate system includes side columns and multiple sets of side plates. The side columns are vertically fixed to both sides of the support frame and have vertical grooves on their surfaces. The two ends of the side plates are slidably connected to the side columns through the vertical grooves. Multiple side plates are inserted into the vertical grooves one by one to form protective walls of different heights. The inner side of the support frame is also provided with hydraulic support rails. Hydraulic support units are connected between the left and right opposing hydraulic support rails. The hydraulic support units slide up and down along the hydraulic support rails. The moving system includes skids set at the bottom of the front and rear end faces of the support frame and lifting lugs installed in the upper middle part. A top protection system is also provided at the top of the side columns.

[0005] Furthermore, the top protection system includes scissor bracing and a protective net, wherein the scissor bracing is laterally connected to the top of the support frame, and the wire mesh covers the scissor bracing and is connected between the support frames.

[0006] Furthermore, the scissor brace includes a support base, a fixing pin, a connecting screw, a long sleeve, and a torsion plate. The support base is located at the top of the inner wall of the support frame. The fixing pin is horizontally connected inside the support base and is rotatably connected to the support base by the connecting screw. One scissor brace includes four support bases, four fixing pins, two connecting screws, and two long sleeves. The two diagonally opposite connecting screws are threaded to both ends of the long sleeve, and the threads of the two connecting screws are screwed in opposite directions. The other two connecting screws are also connected to another long sleeve in the same way, so that the two long sleeves form a shear structure. Each long sleeve is connected to two torsion plates to facilitate the rotation of the long sleeve and the adjustment of the connection length with the connecting screw.

[0007] Furthermore, the protective net is made of elastic material, with connecting rings on all four sides, and hooks are provided on the inner wall of the corresponding support frame for quick suspension connection with the connecting rings.

[0008] Furthermore, the hydraulic support track includes a slide groove and connecting bolts. The slide groove is symmetrically connected to the upper part of the inner wall of the support frame. Through connecting holes are opened at both ends of the slide groove. The connecting bolts are inserted into the connecting holes to fix the hydraulic support unit in the slide groove.

[0009] Furthermore, the hydraulic support unit includes a connecting seat and a hydraulic push rod. The connecting seat has through holes at the bottom of its front and rear sides, allowing it to be detachably connected to the upper, middle, and lower positions of the hydraulic support rail. The hydraulic push rod is connected between two connecting seats to facilitate support of the two support frames.

[0010] Furthermore, a set of vertically connected reinforcing plates are also provided on the inner wall of the support frame.

[0011] The beneficial effects of this utility model are: 1) This utility model is provided with a hydraulic support unit and a hydraulic support rail that can be detachably connected, which can adjust the height position of the hydraulic support unit and the width distance between the support frame. At the same time, the side plate adopts multiple strips and vertical grooves to be inserted, which can adjust the height of the side plate protection. It is suitable for trench protection of different sizes and has strong adjustability.

[0012] 2) A top protection system is installed on the support frame. The support force of the support frame is further strengthened from the top by scissor bracing, which enhances the structural strength. A deformable protective net is connected to the support frame to effectively intercept falling rocks and landslides, which is safe and reliable.

[0013] 3) Install skids and lifting noses. The boom can be suspended by steel wire ropes so that the traction device can be dragged in the trench. The skid structure can reduce the resistance during movement and improve construction efficiency. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is the left view of the present invention.

[0016] Figure 3 This is a top view of the present invention.

[0017] Figure 4 for Figure 1 Enlarged view of part A in the image.

[0018] Figure 5 This is a schematic diagram of the connection of the protective netting.

[0019] In the diagram: 1. Support frame; 2. Side panel system; 3. Moving system; 4. Side column; 5. Side panel; 6. Vertical groove; 7. Hydraulic support rail; 8. Hydraulic support unit; 9. Skid; 10. Lifting lug; 11. Top protection system; 12. Scissor brace; 13. Protective net; 14. Support base; 15. Fixing pin; 16. Connecting screw; 17. Long sleeve; 18. Torsion plate; 19. Connecting ring; 20. Hook; 21. Slide groove; 22. Connecting bolt; 23. Connecting seat; 24. Hydraulic push rod; 25. Reinforcing plate. Detailed Implementation

[0020] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0021] Example: As shown in the figure, the trench excavation anti-collapse device of this utility model includes a support frame 1, a side plate system 2, and a moving system 3. The side plate system 2 includes side columns 4 and multiple sets of side plates 5. The side columns 4 are vertically fixed to both sides of the support frame 1 and have vertical grooves 6 on their surfaces. The two ends of the side plates 5 are slidably connected to the side columns 4 through the vertical grooves 6. Multiple side plates 5 are inserted into the vertical grooves 6 one by one to form protective walls of different heights. The inner side of the support frame 1 is also provided with hydraulic support rails 7. Hydraulic support units 8 are connected between the left and right opposing hydraulic support rails 7. The hydraulic support units 8 slide up and down along the hydraulic support rails 7. The moving system 3 includes skids 9 set at the bottom of the front and rear end faces of the support frame 1 and lugs 10 installed in the middle and upper part. The top of the side columns 4 is also provided with a top protection system 11.

[0022] In this embodiment, the side plates 5 are made of steel square tubes, each 3m long, 20cm wide, and 5cm thick. They can be inserted one by one into the vertical grooves 6 of the side columns 4. When in use, an appropriate number of side plates 5 can be inserted for protection according to the height of the trench. The adjustable nature is strong. The skid 9 can facilitate the movement of the device in the trench. The lifting lug 10 is used to suspend external traction, usually a steel wire rope. When in use, after the pipeline in one trench is laid, the device can be moved forward in the trench to the next pipeline construction site by pulling the lifting lug 10. At this time, the skid 9 structure can reduce the movement resistance, smoothly cross uneven ground, and improve construction efficiency.

[0023] The top protection system 11 includes scissor braces 12 and a protective net 13. The scissor braces 12 are horizontally connected to the top of the support frame 1, and the wire mesh covers the scissor braces 12 and is connected between the support frames 1.

[0024] The scissor brace includes a support base 14, a fixing pin 15, a connecting screw 16, a long sleeve 17, and a torsion plate 18. The support base 14 is located at the top of the inner wall of the support frame 1. The fixing pin 15 is horizontally connected inside the support base 14 and is rotatably connected to the support base 14 by the connecting screw 16. One scissor brace includes four support bases 14, four fixing pins 15, two connecting screws 16, and two long sleeves 17. The two diagonally opposite connecting screws 16 are threaded to both ends of the long sleeve 17, and the threads of the two connecting screws 16 are screwed in opposite directions. The other two connecting screws 16 are also connected to the other long sleeve 17 in the same way, so that the two long sleeves 17 form a shear structure. Each long sleeve 17 is connected to two torsion plates 18, which facilitates the rotation of the long sleeve 17 and the adjustment of the connection length with the connecting screw 16.

[0025] In this embodiment, the torsion plate 18 is used to rotate the long sleeve 17, and the two connecting screws 16 threaded to it are inserted into the support base 14 and can only move up and down along the fixing pin 15. When rotating the long sleeve 17, the relative positions of the connecting screws 16 are fixed, which will cause the connection at both ends to grow longer or shorter because the connecting threads at both ends are in opposite states. Therefore, rotating the long sleeve 17 will cause the overall length of the long sleeve 17 and the connecting screws 16 to grow longer or shorter, which will cause the spacing of the support frame 1 to increase or decrease. The scissor brace located at the top plays an auxiliary support role and works with the hydraulic support unit 8 in the middle to jointly support the protective trench to prevent collapse and enhance the structural strength.

[0026] The protective net 13 is made of elastic material, and each of its four sides is provided with a connecting ring 19. The corresponding inner wall of the support frame 1 is also provided with a hook 20 for quick suspension connection with the connecting ring 19.

[0027] In this embodiment, the protective net 13 is made of multi-layer elastic steel mesh. When placed in the trench, the protective net 13 is suspended on the hook 20 for connection. Then, the hydraulic support unit 8 opens the support frame 1, which will cause the protective net 13 to elastically deform, so that it covers the top of the trench for interception and protection. The multi-layer structure can enhance its elasticity and deformation ability, and is suitable for trench protection of different sizes. The hook 20 and the connecting ring 19 can realize quick disassembly and connection, which is convenient for the movement and transportation of the device.

[0028] The hydraulic support track 7 includes a slide groove 21 and a connecting bolt 22. The slide groove 21 is symmetrically connected to the upper part of the inner wall of the support frame 1. The front and rear ends of the slide groove 21 are provided with through connecting holes. The connecting bolt 22 is inserted into the connecting holes to fix the hydraulic support unit 8 in the slide groove 21.

[0029] In this embodiment, the slide groove 21 is used for the connecting seat 23 to slide up and down within it, and the connecting bolt 22 is used to insert and fix the connecting seat 23 at the upper, middle and lower positions of the slide groove 21 so as to adjust the support height position of the hydraulic push rod 24, avoid the hydraulic push rod 24 interfering with the pipeline and preventing the device from moving when it is supported, and at the same time, for supports of different widths, the appropriate support position can be selected according to the torque to enhance the pressure resistance of the device.

[0030] The hydraulic support unit 8 includes a connecting seat 23 and a hydraulic push rod 24. The connecting seat 23 has through holes at the bottom of its front and rear sides, allowing it to be detachably connected to the upper, middle, and lower positions of the hydraulic support rail 7. The hydraulic push rod 24 is connected between two connecting seats 23 to facilitate support of the two support frames 1.

[0031] In this embodiment, the hydraulic push rod 24 is an electric hydraulic push rod 24. The forward and reverse rotation of the motor causes the hydraulic oil to be output as high-pressure oil through the bidirectional hydraulic pump and sent to the hydraulic cylinder to realize the reciprocating motion of the piston rod. This hydraulic push rod 24 is an existing structure, and its structural principle and graphic parameters will not be described here. The hydraulic push rod 24 is driven by an external power controller to extend or shorten. Connecting seats 23 are installed at both ends of the hydraulic push rod 24, and the connecting seats 23 are inserted into the slide groove 21 for fixation. When the hydraulic push rod 24 extends or shortens, it drives the slide groove 21 and the support frame 1 to move synchronously, thereby adjusting the width distance between the support frames 1 to be suitable for trench protection of different widths.

[0032] In this embodiment, a reinforcing plate 25 is vertically connected to the inner wall of the support frame 1, with equal spacing between the front and back. This strengthens the structural strength of the support frame 1, preventing deformation during the dragging of the device and supporting the side plate 5. If the side wall collapses, the pressure of the soil will be shared by the side plate 5 and the reinforcing plate 25, preventing the support frame 1 from deforming and being damaged.

[0033] This utility model features a detachable connection between a hydraulic support unit and a hydraulic support rail, allowing adjustment of the height of the hydraulic support unit and the width distance between it and the support frame. The side plates utilize multiple strips inserted into vertical slots, enabling adjustment of the side plate protection height. Suitable for trench protection of different sizes, it offers high adjustability. A top protection system is installed on the support frame, further strengthening the support force from the top through scissor bracing, enhancing structural strength. A deformable protective net is connected to the support frame, effectively intercepting falling rocks and landslides, ensuring safety and reliability. A skid and lifting lug are included, allowing the boom to be suspended via steel wire ropes for dragging within the trench. The skid structure minimizes resistance during movement, improving construction efficiency.

[0034] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A device for preventing collapse during trench excavation, characterized in that: The system includes a support frame, a side panel system, and a moving system. The side panel system includes side columns and multiple sets of side panels. The side columns are vertically fixed to both sides of the support frame and have vertical grooves on their surfaces. The two ends of the side panels are slidably connected to the side columns through the vertical grooves. Multiple side panels are inserted into the vertical grooves one by one to form protective walls of different heights. The inner side of the support frame is also provided with hydraulic support rails. Hydraulic support units are connected between the left and right opposing hydraulic support rails. The hydraulic support units slide up and down along the hydraulic support rails. The moving system includes skids located at the bottom of the front and rear end faces of the support frame and lugs installed in the upper middle part. A top protection system is also provided on the top of the side columns.

2. The anti-collapse device for trench excavation according to claim 1, characterized in that: The top protection system includes scissor bracing and a protective net. The scissor bracing is horizontally connected to the top of the support frame, and the wire mesh covers the scissor bracing and is connected between the support frames.

3. The anti-collapse device for trench excavation according to claim 2, characterized in that: The scissor brace includes a support base, a fixing pin, a connecting screw, a long sleeve, and a torsion plate. The support base is located at the top of the inner wall of the support frame. The fixing pin is horizontally connected inside the support base and is rotatably connected to the support base by the connecting screw. One scissor brace includes four support bases, four fixing pins, two connecting screws, and two long sleeves. The two diagonally opposite connecting screws are threaded to both ends of the long sleeve, and the threads of the two connecting screws are screwed in opposite directions. The other two connecting screws are also connected to the other long sleeve in the same way, so that the two long sleeves form a shear structure. Each long sleeve is connected to two torsion plates to facilitate the rotation of the long sleeve and adjust the connection length with the connecting screw.

4. The anti-collapse device for trench excavation according to claim 2, characterized in that: The protective net is made of elastic material, with connecting rings on all four sides. Hooks are also provided on the inner wall of the corresponding support frame for quick suspension connection with the connecting rings.

5. The anti-collapse device for trench excavation according to claim 1, characterized in that: The hydraulic support track includes a slide groove and connecting bolts. The slide groove is symmetrically connected to the upper part of the inner wall of the support frame. Through connecting holes are opened at both ends of the slide groove. The connecting bolts are inserted into the connecting holes to fix the hydraulic support unit in the slide groove.

6. The anti-collapse device for trench excavation according to claim 1, characterized in that: The hydraulic support unit includes a connecting seat and a hydraulic push rod. The connecting seat has through holes at the bottom of its front and rear sides, allowing it to be detachably connected to the upper, middle, and lower positions of the hydraulic support rail. The hydraulic push rod is connected between two connecting seats to facilitate support of two support frames.

7. The anti-collapse device for trench excavation according to claim 1, characterized in that: A set of vertically connected reinforcing plates is also provided on the inner wall of the support frame.

Images