Reusable earthwork breast board

Abstract

The utility model discloses a reusable earth-rock breast board which comprises a plurality of guard boards and supporting boards, the guard boards are provided with connecting pieces used for being connected with the supporting boards, the supporting boards support the guard boards, positioning columns are arranged between every two adjacent guard boards, vertical grooves are formed in the positioning columns, one sides, close to the positioning columns, of the guard boards are fixedly connected with inserting boards, and the inserting boards are connected with the connecting pieces. The positioning column is further provided with a clamping plate, the clamping plate is located on the side, away from the positioning column, of the inserting plate, the clamping plate is provided with a plurality of inserting blocks, the positioning column is provided with inserting grooves matched with the inserting blocks, the inserting blocks penetrate through the clamping plate and are inserted into the inserting grooves, the inserting blocks are provided with a plurality of positioning bolts, and the positioning bolts penetrate through the inserting blocks to be in threaded connection with the positioning column. A buffering cushion is arranged between the clamping plate and the inserting plate, and the two sides of the buffering cushion abut against the clamping plate and the inserting plate respectively. The protective plate has the effect of improving the convenience when the protective plate is disassembled.

Description

Technical Field

[0001] The utility model relates to the field of civil engineering construction support mechanisms, and in particular to a reusable earthwork retaining board. Background Technique

[0002] A retaining board is a support facility used to support and stabilize the soil structure in civil engineering. It is mainly used to prevent the lateral pressure of the soil from damaging buildings or construction workers, and is widely used in construction such as pipeline laying, foundation pouring, or slope support.

[0003] The related technology can refer to the Chinese patent with the publication number CN220225339U, which discloses a foundation pit retaining board assembly in the technical field of foundation pit retaining boards. The foundation pit retaining board assembly includes a plurality of foundation pit baffle bodies and an L-shaped plate connected to the foundation pit baffle bodies. Connecting grooves are provided at one ends of the plurality of foundation pit baffle bodies and the L-shaped plate, and connecting parts that are snugly inserted into the connecting grooves are fixed at the other ends of the foundation pit baffle bodies and the L-shaped plate. Among them, a support rod is obliquely fixed on the side wall of the foundation pit baffle body, and a support plate at the same horizontal position as the bottom of the foundation pit baffle body is installed at the bottom end of the support rod. A plurality of adjustable positioning cones are installed at the bottom end of the support plate in a rectangular array. An installation box is embedded and fixed on the side wall of the foundation pit baffle body, and a positioning block that elastically plugs into the installation box and is clamped with the connecting part is provided in the installation box. This foundation pit retaining board assembly reduces the situation where the baffle tilts due to soil pressure and improves the stability of the baffle during use.

[0004] In view of the above related technology, during the construction process, the pressure of the inner wall of the foundation pit is mainly borne by the foundation pit baffle body, and the pressure of the inner wall of the foundation pit usually gradually increases with the increase of depth. Therefore, the lower end of the foundation pit baffle body will bear greater pressure. When the pressure received by the foundation pit baffle body is unbalanced, it is prone to deform in the direction of the pressure. When the connecting part or the connecting groove of the foundation pit baffle body deforms, it is easy to jam two adjacent foundation pit baffle bodies, making it difficult to disassemble the baffle after the construction is completed. Content of the Utility Model

[0005] In order to improve the convenience of disassembling the protection board, the present application provides a reusable earthwork retaining board.

[0006] The present application provides a reusable earthwork retaining board, adopting the following technical scheme:

[0007] A reusable earthwork retaining plate, comprising a plurality of guard plates and support plates. The guard plates are provided with connecting members for connecting the support plates. The support plates provide support for the guard plates. Positioning columns are provided between every two adjacent guard plates. Vertical grooves are formed in the positioning columns. Insertion plates are fixedly connected to one side of the guard plates close to the positioning columns. The insertion plates are inserted into the vertical grooves. The positioning columns are further provided with clamping plates. The clamping plates are located on the side of the insertion plates away from the positioning columns. The clamping plates are provided with a plurality of insertion blocks. The positioning columns are provided with slots adapted to the insertion blocks. The insertion blocks pass through the clamping plates and are inserted into the slots. The insertion blocks are provided with a number of positioning bolts. The positioning bolts pass through the insertion blocks and are threadedly connected to the positioning columns. A buffer pad is provided between the clamping plate and the insertion plate. Two sides of the buffer pad are respectively in contact with the clamping plate and the insertion plate.

[0008] By adopting the above technical solution, the clamping plate is connected to the positioning column through the cooperation of the insertion block and the slot, thereby restricting the relative displacement of the clamping plate and the positioning column in the vertical direction. The positioning bolt pushes the insertion block to fit with the positioning column, thereby restricting the relative displacement of the clamping plate and the positioning column in the horizontal direction. When the insertion plate is located in the vertical groove, the clamping plate and the positioning column cooperate to clamp and position the insertion plate, so that two adjacent positioning columns position the same guard plate. The clamping plate is used to restrict the displacement of the guard plate in the direction of the force. When the guard plate is subjected to the thrust of the soil, the clamping plate buffers the thrust received by the guard plate through the buffer pad, thereby reducing the probability of the guard plate deforming and jamming. Further, when the guard plate or the insertion plate is deformed, the connection between the clamping plate and the positioning column is released by removing the positioning bolt, thereby releasing the displacement of the insertion plate in the horizontal direction, which is beneficial to improving the convenience of disassembling the guard plate.

[0009] Optionally, a limiting groove is formed on one side of the clamping plate close to the buffer pad. The buffer pad is fixedly connected with a convex block adapted to the limiting groove. The convex block is inserted into the limiting groove and fits with the inner wall of the limiting groove.

[0010] By adopting the above technical solution, the clamping plate limits the convex block through the limiting groove, thereby restricting the relative displacement of the buffer pad and the clamping plate, which is beneficial to improving the connection stability between the buffer pad and the clamping plate.

[0011] Optionally, a receiving groove communicating with the limiting groove is formed at the upper end of the clamping plate. One end of the convex block located in the receiving groove is provided with a disassembly and assembly rod. The disassembly and assembly rod penetrates through the convex block, and a disassembly and assembly ring is fixedly connected to the disassembly and assembly rod.

[0012] By adopting the above technical solution, in the initial state, the disassembly and assembly ring is located in the receiving groove, thereby reducing the probability of the disassembly and assembly ring being damaged by external forces in the construction environment. The setting of the disassembly and assembly ring and the disassembly and assembly rod is beneficial to improving the convenience of disassembling and assembling the buffer pad. When the insertion plate is deformed under the action of external force, the convenience of removing the insertion plate from the vertical groove is improved by removing the buffer pad. At this time, there is no need to disassemble the positioning column and the clamping plate, thereby improving the convenience of separating the guard plate from the positioning column.

[0013] Optionally, the guard plate includes a number of transverse plates and vertical plates connected end to end. The transverse plates are perpendicularly fixed to the vertical plates. The insertion plate is fixedly connected to the vertical plate close to the positioning post. A plurality of reinforcing blocks are fixedly connected between adjacent transverse plates and vertical plates. One side of the reinforcing block is fixedly connected to the transverse plate, and the other side is fixed to the vertical plate.

[0014] By adopting the above technical solution, the transverse plates cooperate with the vertical plates, thereby improving the anti-deformation ability of the guard plate. By setting the reinforcing blocks, the connection strength between the transverse plates and the vertical plates is improved.

[0015] Optionally, a positioning plate is arranged between two adjacent clamping plates. Among all the transverse plates, the transverse plates close to the clamping plates are in contact with the positioning plate. The positioning plate is provided with mounting bolts adapted to the clamping plates. The mounting bolts pass through the clamping plates and are threadedly connected to the clamping plates.

[0016] By adopting the above technical solution, the clamping plate positions the positioning plate through the mounting bolts, so that the positioning plate limits the transverse plates, thereby reducing the probability of the transverse plates deforming under the action of external forces, which is beneficial to improving the structural strength of the guard plate and reducing the probability of the guard plate being damaged.

[0017] Optionally, a butting plate is fixedly connected to the lower end of the positioning post. A plugging rod is fixedly connected to the lower end of the butting plate. A conical block is fixedly provided at the lower end of the plugging rod, and the diameter of the conical block gradually decreases from top to bottom.

[0018] By adopting the above technical solution, when installing the positioning post, the plugging rod is inserted into the civil engineering construction ground, so that the butting plate fits with the ground, thereby improving the placement stability of the positioning post. At the same time, the conical block is beneficial to improving the convenience of inserting the plugging rod.

[0019] Optionally, an extension plate is telescopically arranged along the length direction of the support plate. The connecting piece is located at the upper end of the extension plate and is rotatably connected to the extension plate in the vertical direction. And the connecting piece is provided with a support groove, the width of the support groove is adapted to the width of the transverse plate. A number of stoppers are provided on all the transverse plates close to the clamping plate, and the a number of stoppers are arranged along the length direction of the transverse plate. The connecting piece is located between two adjacent stoppers and is in contact with the stoppers.

[0020] By adopting the above technical solution, the connecting piece is placed between two adjacent baffles, and the transverse plate where the baffle is located is inserted into the support groove, thereby restricting the extension plate and the support plate through the connecting piece. By adjusting the extension length of the extension plate along the support plate, it is convenient to adjust the angle between the support plate and the guard plate, which is applicable to different working environments.

[0021] Optionally, a same bottom plate is provided between adjacent abutting plates, and fixing bolts are provided between the bottom plate and the abutting plates. The fixing bolts pass through the bottom plate and are in threaded connection with the abutting plates. A fixing block is rotatably connected to the lower end of the support plate. An extension block is provided on one side of the bottom plate away from the guard plate, and the fixing block abuts against the side of the extension block close to the guard plate.

[0022] By adopting the above technical solution, the abutting plate fixes the bottom plate through the fixing bolts, so that the bottom plate supports the fixing block through the extension block, thereby improving the support stability of the support plate.

[0023] Optionally, anticorrosion layers are provided on the outer sides of the guard plate and the positioning column, and chamfers are provided on the sides of the guard plate and the positioning column.

[0024] By adopting the above technical solution, the anticorrosion layer is beneficial to reducing the probability of corrosion of the guard plate and the positioning column caused by moisture in the soil. By providing chamfers, it is beneficial to improve the safety of construction workers when constructing near the guard plate.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The clamping plate is connected to the positioning column through the cooperation of the insertion block and the insertion slot, thereby restricting the relative displacement of the clamping plate and the positioning column in the vertical direction. The positioning bolt pushes the insertion block to fit with the positioning column, thereby restricting the relative displacement of the clamping plate and the positioning column in the horizontal direction. When the insertion plate is located in the vertical slot, the clamping plate and the positioning column cooperate to clamp and position the insertion plate, so that two adjacent positioning columns position the same guard plate. The clamping plate is used to restrict the displacement of the guard plate in the force direction. When the guard plate is subjected to the thrust of the soil, the clamping plate buffers the thrust received by the guard plate through the buffer pad, thereby reducing the probability of deformation and jamming of the guard plate. Further, when the guard plate or the insertion plate is deformed, the connection between the clamping plate and the positioning column is released by removing the positioning bolt, thereby releasing the displacement of the insertion plate in the horizontal direction, which is beneficial to improving the convenience of disassembling the guard plate;

[0027] 2. In the initial state, the disassembly and assembly ring is located in the accommodation groove, thereby reducing the probability of damage to the disassembly and assembly ring due to external forces in the construction environment. The setting of the disassembly and assembly ring and the disassembly and assembly rod is beneficial to improving the convenience of disassembling and assembling the buffer pad. When the insertion plate is deformed under the action of external forces, the convenience of removing the insertion plate from the vertical slot is improved by removing the buffer pad. At this time, there is no need to disassemble the positioning column and the clamping plate, thereby improving the convenience of separating the guard plate and the positioning column;

[0028] 3. The clamping plate positions the positioning plate through the mounting bolt, so that the positioning plate limits the cross plate, thereby restricting the probability of deformation of the cross plate under the action of external forces, which is beneficial to improving the structural strength of the guard plate and reducing the probability of damage to the guard plate. Description of the Drawings

[0029] Figure 1It is a schematic diagram of the overall structure of a reusable earthwork retaining board.

[0030] Figure 2 is Figure 1 An enlarged schematic diagram of part A in

[0031] Figure 3 It is a schematic diagram designed to highlight the connection structure of the positioning column and the clamping plate.

[0032] Figure 4 It is a schematic diagram designed to highlight the connection between the support plate and the protection plate.

[0033] Explanation of reference numerals: 1, protection plate; 11, horizontal plate; 111, stopper; 12, vertical plate; 13, strengthening block; 14, chamfer; 15, insertion plate; 21, support plate; 211, extension plate; 212, fixing block; 22, connecting piece; 221, support groove; 3, positioning column; 31, vertical groove; 32, insertion slot; 33, clamping plate; 331, limiting groove; 332, receiving groove; 34, insertion block; 341, positioning bolt; 35, buffer pad; 351, convex block; 352, disassembly and assembly rod; 353, disassembly and assembly ring; 36, abutting plate; 37, insertion rod; 371, conical block; 38, bottom plate; 381, fixing bolt; 382, extension block; 383, groove; 4, positioning plate; 41, installation bolt; 42, installation block. Detailed implementation manners

[0034] The following further elaborates on the present application in conjunction with all the attached drawings.

[0035] The embodiment of the present application discloses a reusable earthwork retaining board.

[0036] Embodiment:

[0037] Referring to Figure 1 and Figure 2 , a reusable earthwork retaining board includes a protection plate 1, a support plate 21, and a positioning column 3. There are multiple protection plates 1 arranged along the width direction, the positioning column 3 is located between adjacent protection plates 1, one side of the protection plate 1 is set as the soil retaining surface, and the soil retaining surface is used to contact the soil and bear the pressure of the soil. The protection plate 1 includes a number of horizontally arranged plates 11 and vertically arranged plates 12 connected end to end. Among them, the horizontal plates 11 are arranged parallel to the soil retaining surface and are mainly used to bear the extrusion force of the soil. The horizontal plates 11 and the vertical plates 12 are perpendicularly fixed to provide support for the horizontal plates 11, thereby improving the anti-deformation ability of the horizontal plates 11. At the connection of the horizontal plates 11 and the vertical plates 12, strengthening blocks 13 are fixedly provided. The strengthening blocks 13 are beneficial to expanding the contact area between the horizontal plates 11 and the vertical plates 12, thereby enhancing the connection strength between the horizontal plates 11 and the vertical plates 12.

[0038] Referring to Figure 1 and Figure 2The positioning column 3 is located between two adjacent guard plates 1, and the lower end of the positioning column 3 is fixedly connected with a plug rod 37. When the positioning column 3 is placed, the plug rod 37 is inserted into the ground of the construction area to fix the positioning column 3. An abutment plate 36 is provided between the positioning column 3 and the plug rod 37. The abutment plate 36 is arranged horizontally. When the positioning column 3 is placed, the abutment plate 36 is in contact with the ground, thereby improving the reverse stability of the positioning column 3. A conical block 371 is provided at the lower end of the plug rod 37. The diameter of the conical block 371 gradually decreases along the direction of the positioning column 3 pointing to the plug rod 37. When the plug rod 37 is inserted, the conical block 371 is first inserted into the ground, which is conducive to improving the convenience of installing the plug rod 37.

[0039] Reference Figure 1 and Figure 2 , both sides of the guard plate 1 along the width direction are fixedly connected with plug plates 15, the plug plates 15 are perpendicular to the horizontal plate 11, and both sides of the positioning column 3 are provided with vertical grooves 31, and the plug plates 15 are inserted into the vertical grooves 31. The positioning column 3 is also provided with a clamping plate 33, the clamping plate 33 is located on the side of the guard plate 1 away from the retaining surface, and the clamping plate 33 is in contact with the plug plates 15. When the clamping plate 33 is in contact with the positioning column 3, it cooperates with the positioning column 3 to clamp the plug plates 15.

[0040] Reference Figure 2 and Figure 3 The clamping plate 33 is provided with a plurality of insert blocks 34, and the positioning column 3 is provided with a slot 32 adapted to the insert block 34. The insert block 34 passes through the clamping plate 33 and is inserted into the slot 32. An extension edge is fixed on the side of the insert block 34 away from the positioning column 3. The diameter of the extension edge is larger than the diameter of the insert block 34. The clamping plate 33 is provided with a placement groove adapted to the extension edge. When the insert block 34 is set in the slot 32, the extension edge is located in the placement groove. The insert block 34 is provided with a positioning bolt 341, which passes through the insert block 34 and is threadedly connected to the positioning column 3. Under the pushing action of the positioning bolt 341, the insert block 34 pushes the clamping plate 33 to fit with the positioning column 3, further enhancing the connection stability between the clamping plate 33 and the positioning column 3.

[0041] Reference Figure 2 and Figure 3 A buffer pad 35 is further provided between the clamping plate 33 and the inserting plate 15, and two sides of the buffer pad 35 are respectively in contact with the clamping plate 33 and the inserting plate 15. When the guard plate 1 is subjected to external force, the buffer pad 35 can play a buffering role, thereby protecting the guard plate 1 and the positioning column 3.

[0042] Reference Figure 1 and Figure 4, the guard plate 1 is provided with a connecting member 22 for connecting the support plate 21. The support plate 21 is provided with an extension plate 211 that is telescopically arranged along the length direction. The connecting member 22 is located at the upper end of the extension plate 211 and is rotatably connected to the extension plate 211 in the vertical direction. A fixing rod is provided between the extension plate 211 and the support plate 21. When it is necessary to limit the relative movement between the extension plate 211 and the support plate 21, the fixing rod is sequentially passed through the extension plate 211 and the fixing plate and is threadedly connected to both, thereby locking the extension plate 211 and the support plate 21.

[0043] Refer to Figure 1 and Figure 4 , the connecting member 22 is provided with a support groove 221, and the width of the support groove 221 is adapted to the width of the cross plate 11, so that the connecting member 22 can be closely attached to the cross plate 11 to provide stable support for the guard plate 1. A plurality of stoppers 111 are further provided on the cross plate 11 near the clamping plate 33. The connecting member 22 is located between two adjacent stoppers 111, which further enhances the connection stability between the guard plate 1 and the support plate 21. The connecting member 22 is located at the upper end of the extension plate 211 and is rotatably connected to the extension plate 211 in the vertical direction.

[0044] Refer to Figure 1 and Figure 4 , the connecting member 22 is provided with a support groove 221, and the width of the support groove 221 is adapted to the width of the cross plate 11, so that the connection can be clamped with any cross plate 11. A fixing rod is provided between the extension plate 211 and the support plate 21. When it is necessary to limit the extension plate 211 and the support. A plurality of stoppers 111 are fixed along the length direction on the cross plate 11 near the clamping plate 33. The distance between two adjacent stoppers 111 on the same cross plate 11 is adapted to the length of the connecting member 22. The connecting member 22 is located between two adjacent stoppers 111 and is in contact with the stoppers 111.

[0045] Refer to Figure 1 and Figure 4 , a same bottom plate 38 is provided between two abutting plates 36 on both sides of the same guard plate 1. A fixing bolt 381 is provided between the bottom plate 38 and the abutting plate 36. The fixing bolt 381 sequentially passes through the bottom plate 38 and the abutting plate 36 and is threadedly connected to the abutting plate 36. The fixing bolt 381 pushes the bottom plate 38 to fit with the abutting plate 36, thereby positioning the abutting plate 36 against the fixing plate. An extension block 382 is provided on the side of the bottom plate 38 away from the retaining surface. The extension block 382 is slidably connected to the bottom plate 38 along the length direction of the bottom plate 38. Further, the extension block 382 can be positioned by means of bolt connection or pin connection.

[0046] Refer to Figure 1 and Figure 4, a fixing block 212 is rotatably connected to the lower end of the support plate 21. A groove 383 adapted to the fixing block 212 is provided at the upper end of the extension block 382. The fixing block 212 is inserted into the groove 383 and fits against the inner wall of the groove 383, thereby limiting the support plate 21 and enabling the support plate 21 to support the guard plate 1, improving the installation stability of the guard plate 1.

[0047] Refer to Figure 1 and Figure 3 , when it is necessary to disassemble the guard plate 1, if the insertion plate 15 of the guard plate 1 is deformed under the action of an external force, the clamping plate 33 and the positioning column 3 are disassembled by removing all the positioning bolts 341, thereby releasing the restriction on the insertion plate 15, making it more convenient to disassemble the guard plate 1. Further, anti-corrosion layers are provided on the outer sides of the guard plate 1, the positioning column 3, and the clamping plate 33. The anti-corrosion layer can be an electroplated coating, an anti-corrosion paint coating, etc., which is beneficial to improving the corrosion resistance of the guard plate 1, the clamping plate 33, and the anti-corrosion layer. The side of the guard plate 1 is chamfered 14, which is beneficial to improving the safety of construction workers during the construction process.

[0048] Refer to Figure 1 and Figure 2 , further, a limiting groove 331 is provided along the length direction on the side of the clamping plate 33 close to the buffer pad 35. A convex block 351 adapted to the limiting groove 331 is fixed on the buffer pad 35. When installing the buffer pad 35, the convex block 351 is inserted into the limiting groove 331 and fits against the inner wall of the limiting groove 331. The clamping plate 33 limits the convex block 351 through the limiting groove 331, which is beneficial to preventing the buffer pad 35 from shifting or falling off during use and improving the installation stability of the buffer pad 35.

[0049] Refer to Figure 1 and Figure 2 , a receiving groove 332 is provided at the upper end of the clamping plate 33. The upper end of the convex block 351 is located in the receiving groove 332, and a disassembly and assembly rod 352 and a disassembly and assembly ring 353 are provided at one end of the convex block 351 located in the receiving groove 332. The disassembly and assembly rod 352 passes through the convex block 351 and is rotatably connected to the convex block 351. The disassembly and assembly ring 353 is fixedly connected to the disassembly and assembly rod 352. When moving the disassembly and assembly ring 353, the disassembly and assembly ring 353 drives the disassembly and assembly rod 352 to rotate. In the initial state, the disassembly and assembly ring 353 is located in the receiving groove 332, thereby reducing the probability of construction workers touching the disassembly and assembly ring 353 during work. When it is necessary to disassemble the guardrail, the convex block 351 and the buffer pad 35 are moved out from between the clamping plate 33 and the insertion plate 15 through the cooperation of the disassembly and assembly ring 353 and the connecting rod, which is convenient for quickly disassembling the buffer pad 35, improving the maintenance efficiency. At the same time, when disassembling and assembling the guard plate 1, there is no need to disassemble the clamping plate 33 and the positioning column 3, which is beneficial to improving the disassembly and assembly convenience of the guard plate 1.

[0050] Refer to Figure 1 and Figure 4, a positioning plate 4 is arranged between two adjacent clamping plates 33 on both sides of the same guard plate 1. The positioning plate 4 is provided with mounting bolts 41, and the mounting bolts 41 pass through the positioning plate 4 and are threadedly connected to the clamping plates 33, so that the clamping plates 33 and the positioning plate 4 are fixed to each other through the mounting bolts 41. All the cross plates 11 close to the clamping plates 33 are in contact with the positioning plate 4, so that the positioning plate 4 limits the cross plates 11, effectively restricting the deformation of the cross plates 11 under the action of external forces and improving the stability of the overall support structure. An installation block 42 is fixed on one side of the positioning plate 4 close to the guard plate 1, and the installation block 42 extends between the adjacent two vertical plates 12 and contacts the vertical plate 12 close to the positioning column 3, thereby restricting the lateral displacement of the guard plate 1 and the positioning column 3 and improving the connection stability between the guard plate 1 and the positioning column 3.

[0051] The implementation principle of a reusable earthwork retaining plate in an embodiment of the present application is as follows: Through the cooperative design of the positioning column 3, the clamping plate 33 and the buffer pad 35, the stable fixation and effective buffering of the guard plate 1 are realized, preventing the deformation and damage of the guard plate 1 under the action of external forces; Through the adjustment of the support plate 21 and the extension plate 211 and the stable support of the connecting piece 22, the support requirements in different working environments are met; When it is necessary to disassemble the guard plate 1, the buffer pad 35 can be removed or the limit of the plug plate 15 by disassembling the contact between the clamping plate 33 and the positioning column 3. When disassembling the guard plate 1, it is more convenient and easy to reuse the guard plate 1.

[0052] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A reusable earthwork retaining plate, comprising a plurality of guard plates (1) and support plates (21), wherein the guard plates (1) are provided with connecting members (22) for connecting the support plates (21), and the support plates (21) provide support for the guard plates (1), characterized in that: A positioning column (3) is provided between two adjacent guard plates (1), the positioning column (3) is provided with a vertical groove (31), a plug plate (15) is fixedly connected to a side of the guard plate (1) close to the positioning column (3), the plug plate (15) is inserted into the vertical groove (31), the positioning column (3) is also provided with a clamping plate (33), the clamping plate (33) is located on a side of the plug plate (15) away from the positioning column (3), the clamping plate (33) is provided with a plurality of plug blocks (34), the positioning column (3) A slot (32) adapted to the insert block (34) is provided, the insert block (34) passes through the clamping plate (33) and is inserted into the slot (32), the insert block (34) is provided with a plurality of positioning bolts (341), the positioning bolts (341) pass through the insert block (34) and are threadedly connected to the positioning column (3), a buffer pad (35) is provided between the clamping plate (33) and the insert plate (15), and two sides of the buffer pad (35) respectively contact the clamping plate (33) and the insert plate (15).

2. A reusable earthwork retaining plate according to claim 1, characterized in that: A limiting groove (331) is provided on one side of the clamping plate (33) close to the buffer pad (35); the buffer pad (35) is fixedly connected with a protrusion (351) adapted to the limiting groove (331); the protrusion (351) is inserted into the limiting groove (331) and fits against the inner wall of the limiting groove (331).

3. The reusable earthwork retaining plate according to claim 2, characterized in that: The upper end of the clamping plate (33) is provided with a receiving groove (332) which is connected to the limiting groove (331); one end of the protrusion (351) located in the receiving groove (332) is provided with a disassembly rod (352); the disassembly rod (352) passes through the protrusion (351), and the disassembly rod (352) is fixedly connected with a disassembly ring (353).

4. The reusable earthwork retaining plate according to claim 1, characterized in that: The guard plate (1) comprises a plurality of transverse plates (11) and vertical plates (12) connected end to end, the transverse plates (11) and the vertical plates (12) are vertically fixed, the plug plate (15) is fixedly connected to the vertical plate (12) close to the positioning column (3), a plurality of reinforcing blocks (13) are fixedly connected between adjacent transverse plates (11) and vertical plates (12), one side of the reinforcing block (13) is fixedly connected to the transverse plate (11), and the other side is fixed to the vertical plate (12).

5. The reusable earthwork retaining plate according to claim 4, characterized in that: A positioning plate (4) is arranged between two adjacent clamping plates (33); among all the transverse plates (11), the transverse plates (11) close to the clamping plates (33) are in contact with the positioning plate (4); the positioning plate (4) is provided with mounting bolts (41) adapted to the clamping plates (33); the mounting bolts (41) pass through the clamping plates (33) and are threadedly connected to the clamping plates (33).

6. The reusable earthwork retaining plate according to claim 1, characterized in that: The lower end of the positioning column (3) is fixedly connected to an abutment plate (36), the lower end of the abutment plate (36) is fixedly connected to an insertion rod (37), the lower end of the insertion rod (37) is fixedly provided with a conical block (371), and the diameter of the conical block (371) gradually decreases from top to bottom.

7. The reusable earthwork retaining plate according to claim 6, characterized in that: The support plate (21) is telescopically provided with an extension plate (211) along the length direction; the connecting member (22) is located at the upper end of the extension plate (211) and is vertically rotatably connected to the extension plate (211); the connecting member (22) is provided with a support groove (221); the width of the support groove (221) is adapted to the width of the transverse plate (11); all transverse plates (11) close to the clamping plate (33) are provided with a plurality of stoppers (111); the plurality of stoppers (111) are arranged along the length direction of the transverse plate (11); the connecting member (22) is located between two adjacent stoppers (111) and contacts the stoppers (111).

8. The reusable earthwork retaining plate according to claim 7, characterized in that: A common bottom plate (38) is provided between adjacent abutment plates (36); a fixing bolt (381) is provided between the bottom plate (38) and the abutment plate (36); the fixing bolt (381) passes through the bottom plate (38) and is threadedly connected to the abutment plate (36); a fixing block (212) is rotatably connected to the lower end of the support plate (21); an extension block (382) is provided on a side of the bottom plate (38) away from the guard plate (1); and the fixing block (212) abuts against a side of the extension block (382) close to the guard plate (1).

9. The reusable earthwork retaining plate according to claim 1, characterized in that: The outer sides of the guard plate (1) and the positioning column (3) are both provided with an anti-corrosion layer, and the sides of the guard plate (1) and the positioning column (3) are both provided with chamfers (14).

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