A foundation pit inclined bracing support connecting device

Abstract

The application provides a foundation pit diagonal bracing support connecting device, which comprises a vertical bracing plate, two anchor columns vertically arranged on the side of the vertical bracing plate facing the pit side wall, anchor holes on the pit side wall for the anchor columns, an adapter plate on the other side of the vertical bracing plate, and two overturning blocks parallel to the pit bottom on the side of the adapter plate away from the vertical bracing plate. By rotating the overturning blocks to make them perpendicular to the pit bottom, the first locking mechanism and the second locking mechanism are triggered, the first locking mechanism can lock the relative position of the anchor columns in the anchor holes, the second locking mechanism can lock the relative position of the adapter plate on the vertical bracing plate, and the top of the diagonal bracing can be detachably connected between the two overturning blocks. The application can realize the quick disassembly and assembly of the vertical bracing plate on the pit side wall, and can also realize the quick disassembly and assembly of the diagonal bracing and the adapter plate on the vertical bracing plate. The application has a single anti-misassembly disassembly and assembly logic sequence, is convenient, efficient, stable and reliable, and can ensure the subsequent construction process.

Description

Technical Field

[0001] This invention relates to the field of foundation pit support technology, and specifically to a foundation pit inclined brace support connection device. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] With the advancement of urbanization in my country, the development and utilization of underground spaces such as underground rail transit and underground plazas are receiving increasing attention. During the construction of these buildings, deep foundation pits need to be excavated. The sidewalls of deep foundation pits are prone to collapse, and their stability mainly relies on the shear strength and overturning resistance of the support piles. Therefore, the importance and technical difficulty of deep foundation pit support are increasing day by day.

[0004] There are various support forms for foundation pits, such as diagonal bracing and horizontal mutual bracing. Generally, steel support structures are used. In large-area deep foundation pit projects, when the soil pressure around the foundation pit is inconsistent and horizontal mutual bracing is not possible, diagonal bracing can be used as the support form.

[0005] Inclined bracing structures typically use inclined plates or inclined steel pipes as inclined braces, which are fixed at an angle to the side walls and bottom inner walls of deep foundation pits. One side of the inclined brace is fixed with a vertical bracing plate that fits against the side wall of the deep foundation pit. The soil layer on the slope of the foundation pit will put great pressure on the inclined bracing structure.

[0006] However, traditional vertical bracing plates are mostly fixed directly to the pit sidewalls by pouring or expansion bolts, which makes them difficult to remove after construction. In addition, the top of the diagonal brace is usually connected to the surface of the vertical bracing plate by welding, which makes it inconvenient to reuse and affects the subsequent construction process. Summary of the Invention

[0007] The main objective of this invention is to provide a foundation pit inclined brace support connection device.

[0008] To achieve the above objectives, the technical solution of the present invention is as follows: a foundation pit inclined brace support connection device includes a vertical support plate attached to the pit sidewall, two anchor columns perpendicular to the pit sidewall are arranged opposite each other on the side of the vertical support plate facing the pit sidewall, and anchor holes for inserting the anchor columns are pre-drilled on the pit sidewall. A connecting plate is arranged on the other side of the vertical support plate, and two flipping blocks parallel to the pit bottom are arranged opposite each other on the side of the connecting plate away from the vertical support plate. It also includes a diagonal brace, a first locking mechanism, and a second locking mechanism. The bottom of the diagonal brace is supported on the bottom of the pit. By rotating the flipping block to make it perpendicular to the bottom of the pit, the first locking mechanism and the second locking mechanism are triggered, so that the first locking mechanism can lock the relative position of the anchor in the anchor hole, and the second locking mechanism can simultaneously lock the relative position of the connecting plate on the vertical support plate. At the same time, the top of the diagonal brace can be detachably connected between the two flipping blocks.

[0009] Furthermore, the flipping block has a first locking hole, and the top side wall of the inclined brace has a through hole. When the flipping block is perpendicular to the bottom of the pit, the two first locking holes are aligned so that the same first locking rod can be inserted. The top of the inclined brace is rotated and sleeved on the outside of the first locking rod through the through hole.

[0010] Furthermore, the first locking mechanism includes two inner support rods and a first transmission assembly. The two inner support rods are housed on both sides of the outer wall of the anchor column along the axial direction of the anchor column. The end of the inner support rod away from the vertical support plate is rotatably connected to the corresponding column wall of the anchor column. A plug rod that can be axially inserted into the anchor column is fixed on the side of the flipping block facing the connecting plate. By driving the plug rod to rotate relative to the anchor column through the flipping block, the first transmission assembly is triggered, which drives the inner support rod to deflect outward of the anchor column so as to abut against the wall of the anchor hole.

[0011] Furthermore, the vertical support plate has a docking hole on the side facing the pit sidewall for inserting the anchor rod near one end of the vertical support plate. The connecting plate has a first through hole for the insertion rod to pass through. The vertical support plate has a second through hole that connects the docking hole and allows the insertion rod to pass through. The end of the anchor rod near the connecting plate has an insertion hole for axial insertion of the insertion rod, which can rotate relative to the insertion hole.

[0012] Furthermore, the first transmission assembly includes two protrusions fixed to the outer peripheral sidewall of the insert rod, and two opposing push rods are radially inserted inside the anchor post; one end of the push rod is rotatably connected to the outer wall of the corresponding inner support rod, and the other end is slidably pressed into the protrusion.

[0013] Furthermore, two axially extending guide grooves are provided on the outer wall of the insertion rod, and a guide block that mates with the guide groove is provided in the second through hole. Two first clearance grooves are provided on the outer wall of the insertion rod along its circumference, and the two first clearance grooves are respectively connected to the end of the two guide grooves near the connecting plate and respectively mate with the guide block. The end of the insertion rod away from the connecting plate has an opening that connects to the guide groove so that the guide block and the top rod can enter the guide groove. Two second clearance grooves are provided on the outer wall of the insertion rod along its circumference, respectively slidably mate with the corresponding top rod. Two protrusions are respectively fixed in the two second clearance grooves.

[0014] Furthermore, the second locking mechanism includes a docking block fixed on the side of the vertical support plate facing the connecting plate and a second transmission assembly. The connecting plate has a docking groove for the docking block to be inserted into, and a second locking rod that can move radially relative to the insertion rod is provided in the connecting plate. The docking block has a second locking hole that cooperates with the second locking rod. By rotating the insertion rod relative to the anchor column through the flipping block, the second transmission assembly is triggered, which drives the second locking rod to move and lock into the second locking hole.

[0015] Furthermore, the second transmission assembly includes a ring body disposed inside the connecting plate and through which the insertion rod passes. The ring body rotates synchronously with the insertion rod. A first limiting groove with a radial bend is provided on the ring wall of the ring body. A second limiting groove is provided inside the connecting plate along the radial direction of the insertion rod. A limiting rod parallel to the insertion rod is slidably inserted in the first limiting groove. One end of the limiting rod is slidably inserted in the second limiting groove. The end of the second locking rod away from the docking block is vertically fixed on the outer wall of the limiting rod.

[0016] Furthermore, two synchronizing blocks are arranged opposite each other on the outer wall of the insertion rod, and a synchronizing groove is opened on the inner circumference of the ring body to engage with the synchronizing blocks. A through groove is opened on the wall of the first through hole to allow the synchronizing blocks to move to the synchronizing groove. A coil spring is provided between the inner wall of the ring body near the vertical support plate and the corresponding inner wall of the connecting plate.

[0017] Furthermore, a bottom plate is provided at the bottom of the pit, and a track groove is opened at the top of the bottom plate. A carrier plate is slidably arranged in the track groove. Two lugs are arranged opposite each other on the top of the carrier plate. A rotating shaft is rotatably arranged between the lugs. The bottom of the diagonal brace is sleeved and fixed to the outside of the rotating shaft. Multiple pin holes are evenly opened on the lugs along the circumference of the rotating shaft. A positioning hole is opened on the diagonal brace. The diagonal brace is adjusted and fixed on the lugs by passing a pin through the pin holes and the positioning hole in sequence. A screw rod parallel to the anchor column is provided in the track groove. The carrier plate is threaded and sleeved on the outside of the screw rod. A drive motor is installed on the side wall of the bottom plate. The output shaft of the drive motor is connected to the screw rod.

[0018] The beneficial effects of this invention are reflected in: 1. The foundation pit inclined brace support connection device of the present invention can realize the quick assembly and disassembly of the vertical support plate on the pit side wall, and at the same time, it can complete the quick assembly and disassembly of the connection plate between the inclined brace and the vertical support plate. That is, through the flip block linkage double locking mechanism, one-click synchronous locking and releasing can be realized. It has anti-misassembly logic, improves construction efficiency and safety, and has a single anti-misassembly logic sequence (the locking rod cannot be inserted when the flip block is not turned upright). It is convenient, efficient, stable and reliable, and ensures the subsequent construction process. 2. The foundation pit inclined brace support connection device of the present invention can lock the relative position of the vertical support plate on the pit side wall and the relative position of the connecting plate on the vertical support plate by driving the insert rod to rotate relative to the anchor column through the flipping block. The flipping block after rotation can be connected with the top of the inclined brace, which is convenient, efficient and stable. Attached Figure Description

[0019] In the attached diagram: Figure 1 This is a three-dimensional structural diagram of the foundation pit inclined brace support connection device of the present invention in the foundation pit in the locked state after assembly. Figure 2 for Figure 1 A partial cross-sectional view of the connecting plate and vertical support plate in the locked state after assembly on the pit sidewall (the flipping block has been rotated 90°). Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 for Figure 2 Enlarged structural diagram at point B; Figure 5 for Figure 2 A schematic diagram of the rotating block and insert rod in their rotated state; Figure 6 for Figure 5 A schematic diagram of a partial longitudinal section of the end of the middle insert rod away from the flipping block; Figure 7 for Figure 3 Schematic diagram of the structure of the central ring; Figure 8 for Figure 1 A partial cross-sectional view of the connecting plate and vertical support plate on the pit sidewall in the assembled, unlocked state (the flipping block is not rotated). Figure 9 for Figure 8 Enlarged structural diagram at point C; Figure 10 for Figure 8 Enlarged structural diagram at point D; Figure 11 for Figure 8 A schematic diagram of the structure of the central flipping block and the insertion rod in the state before rotation; Figure 12 for Figure 11 A schematic diagram of a partial longitudinal section of the middle insertion rod at the end furthest from the flipping block.

[0020] Explanation of reference numerals in the attached figures: 1. Pit bottom; 2. Pit sidewall; 3. Carrier plate; 4. Diagonal brace; 5. Vertical brace plate; 6. Connecting plate; 7. Anchor post; 8. Anchor hole; 9. Insert rod; 10. Flipping block; 11. First locking rod; 12. First locking hole; 13. Butt joint hole; 14. Butt joint block; 15. Butt joint groove; 16. First through hole; 17. Synchronizing block; 18. Ring body; 19. Synchronizing groove; 20. Through groove; 21. First limiting groove; 22. 23. Second limiting groove; 24. Limiting rod; 25. Second locking rod; 26. Second locking hole; 27. Second through hole; 28. Guide groove; 29. ​​Guide block; 20. First clearance groove; 31. Second clearance groove; 32. Protrusion; 33. Top rod; 34. Inner support rod; 35. Base plate; 36. Ear seat; 37. Pin; 38. Pin hole; 39. Rotating shaft; 40. Lead screw; 41. Drive motor; 42. Track groove. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the invention, and not all of them. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0022] Please combine Figures 1 to 12 .

[0023] The foundation pit inclined bracing connection device includes a vertical support plate 5 attached to the pit sidewall 2. Two anchor columns 7 perpendicular to the pit sidewall 2 are arranged opposite each other on the side of the vertical support plate 5 facing the pit sidewall 2. Anchor holes 8 for inserting the anchor columns 7 are pre-drilled on the pit sidewall 2. A connecting plate 6 is arranged on the other side of the vertical support plate 5. Two flipping blocks 10 parallel to the pit bottom 1 are arranged opposite each other on the side of the connecting plate 6 away from the vertical support plate 5.

[0024] It also includes a diagonal brace 4, a first locking mechanism, and a second locking mechanism. The bottom of the diagonal brace 4 is supported on the pit bottom 1. By rotating the flipping block 10 so that it is perpendicular to the pit bottom 1, the first locking mechanism and the second locking mechanism are triggered, so that the first locking mechanism can lock the relative position of the anchor 7 in the anchor hole 8, and the second locking mechanism can simultaneously lock the relative position of the connecting plate 6 on the vertical support plate 5. At the same time, the top of the diagonal brace 4 can be detachably connected between the two flipping blocks 10.

[0025] In practice, anchor holes 8 are first pre-drilled on the sidewall 2 of the pit. The vertical support plate 5 is then attached to the sidewall 2 by inserting the anchor column 7 into the anchor hole 8. The connecting plate 6 is then attached to the vertical support plate 5. By rotating the flipping block 10, it is made perpendicular to the pit bottom 1. With the use of the first and second locking mechanisms, the relative positions of the anchor column 7 in the anchor hole 8 are locked, as are the relative positions of the vertical support plate 5 on the sidewall 2 and the connecting plate 6 on the vertical support plate 5. This achieves the installation and fixation of the vertical support plate 5 and the connecting plate 6 on the sidewall 2 of the pit. The top of the diagonal brace 4 is then installed between the two flipping blocks 10 after flipping. The inclination angle of the diagonal brace 4 is adjusted according to the depth of the pit, and the bottom of the diagonal brace 4 is supported on the pit bottom 1, thus completing the assembly of the pit support.

[0026] The advantage of this design is that it breaks away from the original approach and replaces the welding and fixing method between the top of the diagonal brace 4 and the additional connecting structure on the pit sidewall 2. This allows for quick assembly and disassembly of the top of the diagonal brace 4 on the connecting plate 6 at the pit sidewall 2. The vertical support plate 5 and the connecting plate 6, which serve as additional connecting structures, can also be quickly assembled and disassembled at the pit sidewall 2. This design is convenient, efficient, stable, and reliable. The connection plate 6 and the vertical support plate 5 are designed to be detachable, which facilitates the assembly and disassembly of the connection plate 6 and the vertical support plate 5 on the pit sidewall 2.

[0027] In one embodiment, the flip block 10 has a first locking hole 12, and the top side wall of the diagonal brace 4 has a through hole (not shown). When the flip block 10 is perpendicular to the pit bottom 1, the two first locking holes 12 are aligned so that the same first locking rod 11 can be inserted. The top of the diagonal brace 4 is rotated and sleeved on the outside of the first locking rod 11 through the through hole.

[0028] Thus, when the flipping block 10 flips to be perpendicular to the bottom of the pit 1, the top of the diagonal brace 4 is placed between the flipping blocks 10, and the top of the diagonal brace 4 is installed on the connecting plate 6 by passing a first locking rod 11 through two first locking holes 12 and a through hole.

[0029] In one embodiment, the first locking mechanism includes two inner support rods 33 and a first transmission assembly. The two inner support rods 33 are axially housed on opposite sides of the outer wall of the anchor column 7. The end of the inner support rod 33 away from the vertical support plate 5 is rotatably connected to the corresponding column wall of the anchor column 7. The end of the inner support rod 33 is connected to the corresponding column wall of the anchor column 7 via a coil shaft and a coil spring. When the inner support rod 33 is parallel to the axis of the insertion rod 9, the coil spring is in a non-deformed state. The side of the flip block 10 facing the connecting plate 6 is fixed with an insertion rod 9 that can be axially inserted into the anchor column 7. The rotation angle of the insertion rod 9 is ninety degrees.

[0030] Thus, after the connecting plate 6 is attached to the vertical support plate 5, the insert rod 9 on the flipping block 10 is axially inserted into the anchor post 7. At this time, the flipping block 10 is parallel to the bottom of the pit 1. By driving the insert rod 9 to rotate relative to the anchor post 7 through the flipping block 10 (so that the flipping block 10 is flipped to be perpendicular to the bottom of the pit 1), the first transmission component is triggered, which drives the inner support rod 33 to deflect outward to the anchor post 7 to abut against the wall of the anchor hole 8, thereby locking the relative position of the anchor post 7 in the anchor hole 8, and thus realizing the installation and fixation of the connecting plate 6 on the pit side wall 2 through the vertical support plate 5.

[0031] In one embodiment, the vertical support plate 5 has a docking hole 13 on the side facing the pit sidewall 2 for inserting the anchor 7 near one end of the vertical support plate 5. The connecting plate 6 has a first through hole 16 for the insertion rod 9 to pass through. The vertical support plate 5 has a second through hole 26 that connects to the docking hole 13 and allows the insertion rod 9 to pass through. The anchor 7 has an insertion hole near the connecting plate 6 for axial insertion of the insertion rod 9. The insertion rod 7 can rotate relative to the insertion hole.

[0032] Thus, during installation, the insertion rod 9 passes through the first through hole 16 and the second through hole 26 in sequence and enters the docking hole 13, and then is axially inserted into the anchor column 7 through the insertion hole.

[0033] In one embodiment, the first transmission assembly includes two protrusions 31 fixed relative to each other on the outer peripheral sidewall of the insert rod 9, and two opposing push rods 32 are radially inserted inside the anchor post 7. One end of the push rod 32 is rotatably connected to the outer wall of the corresponding inner support rod 33, and the other end is slidably pressed against the protrusion 31.

[0034] Thus, by rotating the insert rod 9, the two protrusions 31 will press the two top rods 32 respectively, so that the two inner support rods 33 will deflect outwards from the anchor post 7, so that the ends of the inner support rods 33 will abut against the wall of the anchor hole 8, locking the relative position of the anchor post 7 in the anchor hole 8, and preventing the anchor post 7 from accidentally leaving the anchor hole 8.

[0035] It is important to note that, to prevent unevenness of the inner wall of the anchor hole 8 from preventing the inner support rods 33 on both sides from unfolding to the same angle, which would cause the insertion rod 9 to be unable to rotate 90 degrees and thus affect the subsequent insertion of the second locking rod 24 into the second locking hole 25, the inner support rod 33 in this embodiment is designed as a two-section rod. One end of the first section is rotatably connected to the corresponding column wall of the anchor column 7, and the other end can be connected to the second section through a corresponding coil spring and coil shaft. When the inner support rod 33 encounters resistance during unfolding, the second section can be deflected relative to the first section, ensuring that even if the unfolding angles of the two second sections are different, they can still abut against the wall of the anchor hole 8, allowing the insertion rod 9 to rotate 90 degrees so that the second locking rod 24 can be smoothly inserted into the second locking hole 25, completing the fixation of the connecting plate 6 on the vertical support plate 5.

[0036] In one embodiment, two axially extending guide grooves 27 are provided opposite to each other on the outer wall of the insertion rod 9. A guide block 28 that cooperates with the guide grooves 27 is provided in the second through hole 26. Two first clearance grooves 29 are provided opposite to each other on the outer wall of the insertion rod 9 along its circumference. The two first clearance grooves 29 are respectively connected to the ends of the two guide grooves 27 near the connecting plate 6 and respectively cooperate with the guide blocks 28. The end of the insertion rod 9 away from the connecting plate 6 has an opening that connects to the guide grooves 27 so that the guide blocks 28 and the push rod 32 can enter the guide grooves 27. Two second clearance grooves 30 are provided opposite to each other on the outer wall of the insertion rod 9 along its circumference and respectively cooperate with the corresponding push rods 32. Two protrusions 31 are respectively fixed in the two second clearance grooves 30.

[0037] Thus, when the insertion rod 9 enters the anchor post 7 through the first through hole 16 and the second through hole 26, the synchronizing block 17 will enter the synchronizing groove 19 through the through groove 20, so that the insertion rod 9 rotates synchronously with the ring body 18. The guide block 28 will also enter the first clearance groove 29 and the top rod 32 will enter the second clearance groove 30 in the guide groove 27 through the opening. When the insertion rod 9 is rotated by the flipping block 10, the guide block 28 will enter the first clearance groove 29 and the top rod 32 will enter the second clearance groove 30 to press and cooperate with the protrusion 31.

[0038] In one embodiment, the second locking mechanism includes a docking block 14 fixed to the side of the vertical support plate 5 facing the connecting plate 6 and a second transmission assembly. The connecting plate 6 has a docking groove 15 for the docking block 14 to be inserted into. The connecting plate 6 has a second locking rod 24 that can move radially relative to the insertion rod 9. The docking block 14 has a second locking hole 25 that cooperates with the second locking rod 24. By rotating the insertion rod 9 relative to the anchor column 7 through the flipping block 10, the second transmission assembly is triggered, which drives the second locking rod 24 to move and lock into the second locking hole 25.

[0039] Thus, the initial installation of the connecting plate 6 on the vertical support plate 5 can be completed through the docking block 14 and the docking groove 15. When the insert rod 9 is inserted into the anchor column 7, the second transmission component is triggered by the rotating block 10 driving the insert rod 9 to rotate relative to the anchor column 7, thereby driving the second locking rod 24 to move and engage with the second locking hole 25, thereby locking the relative position of the docking block 14 in the docking groove 15, that is, achieving the assembly and fixation between the vertical support plate 5 and the connecting plate 6.

[0040] In one embodiment, the second transmission assembly includes a ring 18 disposed inside the connecting plate 6 and through which the insertion rod 9 passes. The ring 18 rotates synchronously with the insertion rod 9. A first limiting groove 21 with a radial bend is provided on the ring wall of the ring 18. A second limiting groove 22 is provided inside the connecting plate 6 along the radial direction of the insertion rod 9. A limiting rod 23 parallel to the insertion rod 9 is slidably inserted in the first limiting groove 21. One end of the limiting rod 23 is slidably inserted in the second limiting groove 22. The end of the second locking rod 24 away from the docking block 14 is vertically fixed on the outer wall of the limiting rod 23.

[0041] Thus, when the insertion rod 9 drives the ring body 18 to rotate, the groove wall of the first limiting groove 21 will rub against and squeeze the limiting rod 23. Under the combined limiting action of the second limiting groove 22, the limiting rod 23 will drive the second locking rod 24 to move and lock into the second locking hole 25, locking the relative position of the docking block 14 in the docking groove 15.

[0042] In one embodiment, two synchronizing blocks 17 are arranged opposite each other on the outer wall of the insert rod 9. A synchronizing groove 19 is opened on the inner circumference of the ring body 18 to engage with the synchronizing blocks 17. A through groove 20 is opened on the wall of the first through hole 16 to allow the synchronizing blocks 17 to move to the synchronizing groove 19. A coil spring is provided between the side of the ring body 18 near the vertical support plate 5 and the corresponding inner wall of the connecting plate 6.

[0043] Thus, by entering the synchronization groove 19 through the synchronization block 17, the insertion rod 9 and the ring body 18 can rotate synchronously. The synchronization block 17 can be smoothly inserted into the synchronization groove 19 through the disc spring. When the ring body 18 does not rotate, the disc spring is in a non-deformed state. When the ring body 18 rotates, the disc spring is deformed by elastic force.

[0044] In one embodiment, a bottom plate 34 is provided at the bottom of the pit 1. A track groove 41 is provided at the top of the bottom plate 34. A carrier plate 3 is slidably provided in the track groove 41. Two lugs 35 are provided opposite each other at the top of the carrier plate 3. A rotating shaft 38 is rotatably provided between the lugs 35. The bottom of the diagonal brace 4 is sleeved and fixed to the outside of the rotating shaft 38. Multiple pin holes 37 are evenly provided on the lugs 35 along the circumference of the rotating shaft 38. A positioning hole is provided on the diagonal brace 4. The diagonal brace 4 is adjusted and fixed on the lugs 35 by a pin 36 passing through the pin holes 37 and the positioning hole in sequence. A screw rod 39 parallel to the anchor column 7 is provided in the track groove 41. The carrier plate 3 is threaded and sleeved to the outside of the screw rod 39. A drive motor 40 is installed on the side wall of the bottom plate 34. The output shaft of the drive motor 40 is connected to the screw rod 39.

[0045] Thus, in this assembly-type system, after the connecting plate 6 and the vertical support plate 5 are installed on the pit sidewall 2, the output shaft of the drive motor 40 drives the lead screw 39 to rotate, causing the carrier plate 3 to move in the track groove 41 and adjust the tilt angle of the diagonal brace 4. The top of the diagonal brace 4 is then adjusted between the two flipping blocks 10 and installed using the first locking rod 11. Subsequently, the pin 36 passes through the pin hole 37 and the positioning hole on the diagonal brace 4 to fix and maintain the tilt angle of the diagonal brace 4. Finally, the output shaft of the drive motor 40 drives the lead screw 39 to rotate again, causing the carrier plate 3 to move in the track groove 41 toward the pit sidewall 2, thereby supporting and tightening the connecting plate 6 and the vertical support plate 5 on the pit sidewall 2.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0047] It should be noted that if the embodiments of the invention involve directional indicators (such as up and down), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0048] Furthermore, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B. Additionally, if the embodiments of the invention involve descriptions such as "first," "second," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" can explicitly or implicitly include at least one of those features. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the invention.

Claims

1. A foundation pit inclined brace support connection device, characterized in that, It includes a vertical support plate (5) attached to the pit sidewall (2), two anchor columns (7) perpendicular to the pit sidewall (2) are arranged opposite each other on the side of the vertical support plate (5) facing the pit sidewall (2), and anchor holes (8) for the anchor columns (7) are pre-drilled on the pit sidewall (2). A connecting plate (6) is arranged on the other side of the vertical support plate (5), and two flipping blocks (10) parallel to the pit bottom (1) are rotatably arranged on the side of the connecting plate (6) away from the vertical support plate (5). It also includes a diagonal brace (4), a first locking mechanism and a second locking mechanism. The bottom of the diagonal brace (4) is supported on the bottom of the pit (1). By rotating the flip block (10) to make it perpendicular to the bottom of the pit (1), the first locking mechanism and the second locking mechanism are triggered, so that the first locking mechanism can lock the relative position of the anchor column (7) in the anchor hole (8), and the second locking mechanism can simultaneously lock the relative position of the connecting plate (6) on the vertical support plate (5), while the top of the diagonal brace (4) can be detachably connected between the two flip blocks (10). The first locking mechanism includes two inner support rods (33) and a first transmission assembly. The two inner support rods (33) are axially housed on both sides of the outer wall of the anchor column (7). The end of the inner support rod (33) away from the vertical support plate (5) is rotatably connected to the corresponding column wall of the anchor column (7). The side of the flipping block (10) facing the connecting plate (6) is fixed with a plug rod (9) that can be axially inserted into the anchor column (7). By driving the plug rod (9) to rotate relative to the anchor column (7) through the flipping block (10), the first transmission assembly is triggered, which drives the inner support rod (33) to deflect outward from the anchor column (7) to abut against the wall of the anchor hole (8). The vertical support plate (5) has a docking hole (13) on the side facing the pit sidewall (2) for inserting the anchor post (7) near one end of the vertical support plate (5). The connecting plate (6) has a first through hole (16) for the insertion rod (9) to pass through. The vertical support plate (5) has a second through hole (26) that connects to the docking hole (13) and allows the insertion rod (9) to pass through. The anchor post (7) has an insertion hole near the connecting plate (6) for axial insertion of the insertion rod (9). The insertion rod (9) can rotate relative to the insertion hole. The first transmission assembly includes two protrusions (31) fixed on the outer peripheral sidewall of the insert rod (9), and two opposing top rods (32) are radially inserted inside the anchor post (7); one end of the top rod (32) is rotatably connected to the outer wall of the corresponding inner support rod (33), and the other end is in sliding and pressing engagement with the protrusion (31); The outer wall of the insert rod (9) has two axially extending guide grooves (27) opposite each other. The second through hole (26) is provided with a guide block (28) that cooperates with the guide groove (27). The outer wall of the insert rod (9) has two first clearance grooves (29) opposite each other along its circumference. The two first clearance grooves (29) are respectively connected to the end of the two guide grooves (27) near the connecting plate (6) and respectively cooperate with the guide block (28). The end of the insert rod (9) away from the connecting plate (6) has an opening that connects to the guide groove (27) so that the guide block (28) and the top rod (32) can enter the guide groove (27). The outer wall of the insert rod (9) has two second clearance grooves (30) opposite each other along its circumference that are respectively slidably cooperate with the corresponding top rod (32). The two protrusions (31) are respectively fixed in the two second clearance grooves (30). The second locking mechanism includes a docking block (14) fixed on the side of the vertical support plate (5) facing the connecting plate (6) and a second transmission assembly. The connecting plate (6) has a docking groove (15) for the docking block (14) to be inserted. The connecting plate (6) has a second locking rod (24) that can move radially relative to the insertion rod (9). The docking block (14) has a second locking hole (25) that cooperates with the second locking rod (24). By rotating the insertion rod (9) relative to the anchor column (7) through the flipping block (10), the second transmission assembly is triggered, which drives the second locking rod (24) to move and lock into the second locking hole (25). The second transmission assembly includes a ring (18) disposed inside the connecting plate (6) and through which the insertion rod (9) passes. The ring (18) rotates synchronously with the insertion rod (9). A first limiting groove (21) with a radial bend is provided on the ring wall of the ring (18). A second limiting groove (22) is provided inside the connecting plate (6) along the radial direction of the insertion rod (9). A limiting rod (23) parallel to the insertion rod (9) is slidably inserted in the first limiting groove (21). One end of the limiting rod (23) is slidably inserted in the second limiting groove (22). The second locking rod (24) is vertically fixed on the outer wall of the limiting rod (23) at the end away from the docking block (14).

2. The foundation pit inclined brace support connection device as described in claim 1, characterized in that, The flipping block (10) has a first locking hole (12), and the top side wall of the diagonal brace (4) has a through hole. When the flipping block (10) is perpendicular to the bottom of the pit (1), the two first locking holes (12) are aligned so that the same first locking rod (11) can be inserted. The top of the diagonal brace (4) is rotated and sleeved on the outside of the first locking rod (11) through the through hole.

3. The foundation pit inclined brace support connection device as described in claim 1, characterized in that, Two synchronizing blocks (17) are arranged opposite each other on the outer wall of the insert rod (9). A synchronizing groove (19) is opened on the inner circumference of the ring body (18) to engage with the synchronizing blocks (17). A through groove (20) is opened on the wall of the first through hole (16) to allow the synchronizing blocks (17) to move to the synchronizing groove (19). A coil spring is provided between the side of the ring body (18) near the vertical support plate (5) and the inner wall of the connecting plate (6).

4. The foundation pit inclined brace support connection device as described in claim 1, characterized in that, The pit bottom (1) is provided with a bottom plate (34), and a track groove (41) is opened on the top of the bottom plate (34). A carrier plate (3) is slidably arranged in the track groove (41). Two ear seats (35) are arranged opposite each other on the top of the carrier plate (3). A rotating shaft (38) is rotatably arranged between the ear seats (35). The bottom of the diagonal brace (4) is sleeved and fixed on the outside of the rotating shaft (38). Multiple pin holes (37) are evenly opened on the ear seats (35) along the circumference of the rotating shaft (38). The bracket (4) has a positioning hole. The diagonal brace (4) is fixed on the ear seat (35) by passing through the pin hole (37) and the positioning hole in sequence by a pin (36). The track groove (41) is provided with a screw rod (39) parallel to the anchor column (7). The carrier plate (3) is threaded on the outside of the screw rod (39). The drive motor (40) is installed on the side wall of the bottom plate (34). The output shaft of the drive motor (40) is connected to the screw rod (39).

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