Trench excavation safety protection structure

Abstract

The application relates to the field of building construction protection, in particular to a trench excavation safety protection structure, which comprises a nail rod located beside a trench and rammed into a deep soil layer, the side wall of the trench is closely attached to a plurality of soil retaining plates, the soil retaining plates are provided with a pulling rod assembly used for pulling the nail rod; the pulling rod assembly comprises a pulling tube in the shape of a circular arc, two pipe penetrating holes are formed in the soil retaining plates, the two ends of the pulling tube are slid through the pipe penetrating holes from one side of the soil retaining plate closely attached to the trench to the other side, and the nail rod is located in the area enclosed by the pulling tube and the soil retaining plate; one end of the pulling tube is detachably connected with a dredging pipe piece, the dredging pipe piece comprises an elastic rod extending into the pulling tube, a plurality of push pieces are spirally arranged on the outer side wall of the elastic rod in the length direction, and one end of the elastic rod located outside the pulling tube is provided with a handle. The application has the effect of protecting personnel in the excavation process.

Description

Technical Field

[0001] This application relates to the field of construction safety protection, and in particular to a safety protection structure for trench excavation. Background Technology

[0002] With the rapid development of cities, urban municipal engineering projects are also being updated and replaced. The repair of underground pipelines inevitably requires manual excavation of trenches. In order to ensure the safety of workers, support structures are usually arranged in the excavated trenches to prevent the trenches from collapsing.

[0003] In existing technologies, support structures are usually placed in the trench after it has been dug. However, the trench may be quite deep, and deeper trenches are more prone to collapse. Therefore, it is impossible to protect personnel during the trench excavation process, which is a significant deficiency. Summary of the Invention

[0004] In order to improve the problem that trenches may collapse during excavation and cause harm to workers, this application provides a trench excavation safety protection structure.

[0005] The trench excavation safety protection structure provided in this application adopts the following technical solution:

[0006] A trench excavation safety protection structure includes a nail rod located beside the trench and driven deep into the soil. Multiple retaining plates are attached to the sidewalls of the trench. Each retaining plate has a sling assembly for pulling the nail rod through it. The sling assembly includes an arc-shaped sling tube. Two through holes are formed in the retaining plate. Both ends of the sling tube slide through the through holes from one side of the retaining plate adjacent to the trench to the opposite side. The nail rod is located within the area enclosed by the sling tube and the retaining plate.

[0007] By adopting the above technical solution, before excavation, workers pre-install nail rods deep into the soil beside the trench according to the excavation location. During trench excavation, the retaining plate is tightly attached to the trench sidewall, and a mandrel is passed through two through holes in the retaining plate. At this point, the nail rods are located within the area enclosed by the mandrel and the retaining plate. The mandrel and the nail rod work together to position the retaining plate, reducing the possibility of trench sidewall collapse and ensuring personnel safety during excavation.

[0008] Optionally, one end of the tubing is detachably connected to a tubing auger, the tubing auger including an elastic rod extending into the tubing, a plurality of push plates spirally distributed along the length of the outer side wall of the elastic rod, and a handle provided at the end of the elastic rod located outside the tubing.

[0009] By adopting the above technical solution, in order to improve the smoothness of excavation, during the process of the pipe passing through the soil layer, the worker manually turns the handle, which drives the push plate to rotate, thereby pushing the soil in the pipe out from its end.

[0010] Optionally, the elastic rod is provided with a limiting ring on its circumferential direction on the rod body outside the tube. Two end plates are clamped on the elastic rod at a position relative to the limiting ring. The end plates are provided with a rotating groove for the limiting ring to rotate. Both end plates are provided with elastic clamping arms extending to the outer wall of the tube. The outer wall of the tube is provided with a slot at a position relative to the elastic clamping arms. The elastic clamping arms are provided with hooks that engage with the slots.

[0011] By adopting the above technical solution, the hook and the slot are engaged to fix the handle to the end of the pipe, which makes it easier for workers to clear the mud in the pipe through the pipe clearing fitting.

[0012] Optionally, two coaxial limiting holes are radially opened at both ends of the tube, and a limiting pin is slidably inserted between the two limiting holes.

[0013] By adopting the above technical solution, the limiting pin's resistance to the retaining plate effectively limits the movement of the retaining pipe.

[0014] Optionally, the retaining plate has an opening at a position relative to the retaining pipe and is hinged with a sealing plate, the sealing plate being locked to the retaining plate by a pin.

[0015] By adopting the above technical solution, after the trench repair is completed, the workers release the lock between the sealing plate and the retaining plate, rotate the sealing plate, and rake out the soil between the pipe and the retaining plate, which makes it easier to remove the pipe from the soil layer.

[0016] Optionally, the retaining plate is provided with multiple plates and has multiple slots, and different retaining plates are spliced ​​together by the insertion and cooperation of the plates and slots.

[0017] By adopting the above technical solution, the interlocking of the plates and slots allows multiple different retaining plates to be assembled into a whole. Even if individual retaining plates and their corresponding tie rod components fail due to special reasons, the other retaining plates can still assist in providing a certain degree of protection.

[0018] Optionally, multiple sets of the through holes are vertically formed on the retaining plate.

[0019] By adopting the above technical solution, since there may be stones in the soil layer that obstruct the passage of the pipe, multiple sets of threading holes are set vertically to ensure that workers can pass the pipe through a position in the soil layer where there are no stones.

[0020] Optionally, the handle is provided with anti-slip texture.

[0021] By adopting the above technical solution, the anti-slip texture reduces the possibility of slipping when workers turn the handle.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. Before excavation, workers pre-install nail rods deep into the soil beside the trench according to the excavation location. During excavation, retaining boards are placed tightly against the trench sidewalls, and mandrels are passed through two through-holes in the retaining boards. At this point, the nail rods are located within the area enclosed by the mandrels and retaining boards. The mandrels and nail rods work together to position the retaining boards, reducing the possibility of trench sidewall collapse and ensuring personnel safety during excavation.

[0024] 2. To improve the smoothness of excavation, during the process of the pipe passing through the soil layer, the worker manually turns the handle, which drives the push plate to rotate, thereby pushing the soil inside the pipe out from its end.

[0025] 3. After the trench repair is completed, the workers loosen the lock between the sealing plate and the retaining plate, rotate the sealing plate, and rake out the soil between the pipe and the retaining plate to facilitate the removal of the pipe from the soil. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0027] Figure 2 This is an exploded view of the elastic rod, push plate, and pull tube in the embodiments of this application.

[0028] Figure 3 This is an exploded view of the elastic clamping arm, end plate, and elastic rod in an embodiment of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Trench; 2. Nail rod; 3. Retaining plate; 31. Pipe hole; 4. Pipe puller; 41. Slot; 42. Limiting hole; 5. Elastic rod; 6. Push plate; 7. Handle; 9. End plate; 91. Circular groove; 10. Elastic clamping arm; 11. Hook; 13. Sealing plate; 14. Anti-slip texture. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0031] This application discloses a safety protection structure for trench excavation.

[0032] Reference Figure 1The trench excavation safety protection structure includes a nail rod 2 located next to the trench 1 and vertically driven deep into the soil layer. Multiple retaining plates 3 are attached to the side wall of the trench 1. Multiple retaining rod assemblies for pulling over the nail rod 2 are set on the retaining plates 3 in a downward direction.

[0033] Reference Figure 1 The retaining plate 3 has multiple sets of mounting holes along the direction from top to bottom. Each set of mounting holes includes two through holes 31 located at the same level. Each set of mounting holes corresponds to one tie rod assembly.

[0034] Reference Figure 1 and Figure 2 The tie rod assembly includes an arc-shaped tie tube 4. Both ends of the tie tube 4 slide through the through holes 31 from one side of the retaining plate 3 that is close to the trench 1 to the opposite side. The nail rod 2 is located in the area enclosed by the tie tube 4 and the retaining plate 3.

[0035] Reference Figure 1 and Figure 2 Since the nail rod 2 is driven deep into the soil, it is difficult to move it horizontally. The retaining pipe 4 is used to pull the nail rod 2 over, so that the retaining plate 3 is tightly attached to the side wall of the trench 1. Even if the trench 1 collapses, the limiting effect of the nail rod 2 on the retaining pipe 4 can immediately prevent the collapse from continuing, providing enough time for the workers to escape.

[0036] Reference Figure 1 and Figure 2 When installing the pipe 4, the pipe 4 passes through one of the corresponding through holes 31 into the soil layer, and then passes through the other corresponding through hole 31 from the soil layer.

[0037] As the pipe 4 travels through the soil, the soil inside the soil layer will enter the pipe 4 and accumulate, which will cause great obstruction to the travel of the pipe 4 through the soil layer. Therefore, the pipe 4 is also equipped with a pipe clearing device to clear its internal flow.

[0038] The pipe fitting includes a handle 7 arranged at one end of the pipe 4, the handle 7 is welded with an elastic rod 5, the elastic rod 5 extends into the pipe 4, and multiple push plates 6 are spirally distributed on the outer side wall of the elastic rod 5 along its length.

[0039] Therefore, during the passage, the worker manually turns the handle 7, which drives multiple push plates 6 to rotate through the elastic rod 5. The push plates 6 push the soil inside the pipe 4 out of the end of the pipe 4, thus ensuring that the pipe 4 can pass smoothly through the soil.

[0040] Reference Figure 1 The handle 7 is provided with anti-slip texture 14, which reduces the possibility of slipping when the worker turns the handle 7.

[0041] Reference Figure 1Because large stones may be hidden in the soil and obstruct the passage of the winch 4, workers can manually change the position of the winch 4 when encountering stones.

[0042] Reference Figure 1 , Figure 2 and Figure 3 The elastic rod 5 is located on the rod body outside the tube 4 and has a circumferentially integrally formed limiting ring. The elastic rod 5 has two mutually bolted end plates 9 clamped at the position relative to the limiting ring. The end plates 9 have a ring rotation groove 91 for the limiting ring to rotate.

[0043] Reference Figure 1 , Figure 2 and Figure 3 Both end plates 9 are integrally formed with elastic clamping arms 10 extending to the outer wall of the tube 4. The outer wall of the tube 4 has a slot 41 at a position relative to the elastic clamping arms 10. The elastic clamping arms 10 are integrally formed with hooks 11 that engage with the slots 41.

[0044] Reference Figure 1 , Figure 2 and Figure 3 The elastic clamping arm 10 deforms, causing the hook 11 to engage in the slot 41, thereby achieving a detachable connection between the pipe dredging fitting and the pipe 4. Multiple pipes 4 may be arranged on the retaining plate 3, but only one pipe dredging fitting is required.

[0045] Reference Figure 1 The tube 4 has two coaxial limiting holes 42 radially opened at both ends, and a limiting pin slides between the two limiting holes 42.

[0046] After the retaining pipe 4 is installed on the retaining plate 3, the worker will pass the limiting pin through the corresponding two limiting holes 42 to limit the retaining pipe 4, thereby reducing the possibility that the retaining pipe 4 will accidentally detach from the retaining plate 3 under force.

[0047] Reference Figure 1 Since most of the pipe 4 runs through the soil layer, it is difficult for workers to manually pull the pipe 4 directly out of the soil layer after the trench 1 is repaired.

[0048] Therefore, the retaining plate 3 has an opening at the position relative to the retaining pipe 4 and is hinged with a sealing plate 13, which is locked to the retaining plate 3 by a pin in the prior art.

[0049] The worker first releases the lock between the sealing plate 13 and the retaining plate 3, then rotates the sealing plate 13 and uses a rake to rake out the soil at the opening. After that, the pipe 4 can be pulled out of the soil layer relatively easily.

[0050] Reference Figure 1In reality, the soil around trench 1 is prone to loosening due to water accumulation, resulting in poor holding effect of the top rod on the pull pipe 4 in this part.

[0051] To address this issue, multiple plates (not shown in the figure) are welded onto the retaining plate 3, and multiple slots (not shown in the figure) are provided. Different retaining plates 3 are spliced ​​together by interlocking the plates with the slots.

[0052] By interlocking the slots and plates, multiple retaining plates 3 can be spliced ​​together to form a whole. Even if one of the retaining plates 3 fails to provide protection, the other retaining plates 3 can still assist in providing a certain degree of protection.

[0053] The implementation principle of a trench excavation safety protection structure in this application embodiment is as follows: Before trench 1 is excavated, workers first vertically drive nail rods 2 into the soil layer next to trench 1 according to the excavation position of trench 1. Afterwards, whenever a certain depth is excavated, retaining plates 3 are tightly attached to the side wall of trench 1.

[0054] One worker manually makes the retaining plate 3 fit tightly against the side wall of the trench 1, while another worker passes the pipe 4 through one of the corresponding through holes 31 into the soil layer, and then through the other corresponding through hole 31 from the soil layer.

[0055] During this process, the worker manually turns the handle 7, which drives multiple push plates 6 to rotate via the elastic rod 5. The push plates 6 push the soil inside the pipe 4 out of the end of the pipe 4, thereby ensuring that the pipe 4 can pass smoothly through the soil.

[0056] Repeat the above operation process. Multiple retaining pipes 4 can be installed on the retaining plate 3 to pull the nail rod 2, so as to ensure that the nail rod 2 and the retaining pipe 4 have a limiting effect on the retaining plate 3.

[0057] After the trench 1 was repaired, the workers released the locking between the sealing plate 13 and the retaining plate 3, and then used a rake to remove the soil from the opening, so that the workers could pull the pipe 4 out of the soil.

[0058] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A trench excavation safety shield, characterized by: The utility model relates to a soil retaining device, which comprises a nail rod (2) located beside a groove (1) and rammed into the deep soil layer, the side wall of the groove (1) is tightly attached to a plurality of soil retaining plates (3), and a pulling rod assembly for pulling the nail rod (2) is arranged on the soil retaining plates (3); The pulling rod assembly comprises a circular arc-shaped pulling tube (4), two tube penetrating holes (31) are formed on the soil retaining plates (3), and the two ends of the pulling tube (4) are slid through the tube penetrating holes (31) from one side of the soil retaining plates (3) tightly attached to the groove (1) to the other side, and the nail rod (2) is located in the area enclosed by the pulling tube (4) and the soil retaining plates (3); One end of the pulling tube (4) is detachably connected to a dredging tube, the dredging tube comprises an elastic rod (5) extending into the pulling tube (4), a plurality of push pieces (6) are spirally arranged on the outer side wall of the elastic rod (5) in the length direction, and a handle (7) is arranged at one end of the elastic rod (5) located outside the pulling tube (4); A limiting ring is circumferentially arranged on the rod of the elastic rod (5) located outside the pulling tube (4), two end plates (9) are clamped at the position of the elastic rod (5) relative to the limiting ring and are mutually bolted, a ring rotating groove (91) is formed in the end plate (9) for the rotation of the limiting ring, elastic clamping arms (10) extending to the outer side wall of the pulling tube (4) are arranged on the two end plates (9), a clamping groove (41) is formed in the outer side wall of the pulling tube (4) relative to the elastic clamping arms (10), and a clamping hook (11) is arranged on the elastic clamping arm (10) and is clamped with the clamping groove (41); Two coaxial limiting holes (42) are radially formed in the two ends of the pulling tube (4), and a limiting pin is slid through the two limiting holes (42).

2. The trench excavation safety shield of claim 1, wherein: An enclosing plate (13) is opened and hinged on the soil retaining plate (3) relative to the pulling tube (4), and the enclosing plate (13) is locked with the soil retaining plate (3) through a bolt.

3. The trench excavation safety shield of claim 1, wherein: A plurality of plate pieces are arranged on the soil retaining plate (3), a plurality of insertion grooves are formed in the soil retaining plate (3), and the soil retaining plates (3) are spliced through the insertion and cooperation of the plate pieces and the insertion grooves.

4. The trench excavation safety shield of claim 1, wherein: A plurality of groups of tube penetrating holes (31) are vertically formed in the soil retaining plates (3).

5. The trench excavation safety shield of claim 1, wherein: Anti-skid lines (14) are arranged on the handle (7).

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