A foundation pit excavation supporting structure and a supporting method

Abstract

The application discloses a foundation pit excavation supporting structure and a supporting method, relates to the technical field of foundation pit construction, and comprises a supporting column, the two ends of the supporting column are both provided with an inner groove, a driving shaft piece is rotationally connected in the inner groove, one end of the driving shaft piece is penetrated through and connected with a connecting pipe piece, a shelf assembly is threadedly connected on the driving shaft piece, the two sides of one end of the connecting pipe piece are both rotationally connected with a transverse supporting plate, the structure of the shelf assembly is moved to one end of the inner groove through the rotation of the driving shaft piece, the structure of the shelf assembly drives the vertical supporting plate and the transverse supporting plate to be pulled, the structure of the shelf assembly is contracted with the connecting pipe piece, the vertical supporting plate and the transverse supporting plate, the structure is recycled in this way, the dismounting speed of the construction personnel on the foundation pit is improved, the volume of the structure after contraction is small, the space occupancy rate is low, and the construction personnel can conveniently recycle, store, transport and use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of foundation pit construction, in particular to a foundation pit excavation supporting structure and a supporting method. BACKGROUND

[0002] With the continuous development of urban modernization construction, the development and construction requirements of urban space are increasingly urgent, and various underground engineering construction is also increasing. Large underground engineering has higher and higher requirements for deep foundation pit engineering. The excavation of the foundation pit will inevitably cause the deformation of the surrounding soil and affect the underground pipelines of the surrounding buildings, which will seriously endanger the normal use and safety of the underground pipelines. In order to avoid this situation, a foundation pit supporting structure will be set up during the design and excavation of the foundation pit to stabilize the safety of the foundation pit.

[0003] The existing Chinese patent authorization publication No. CN215329954U discloses a foundation pit supporting structure for foundation pit excavation, which comprises a baffle, a connecting piece, a supporting piece and a reinforcing piece. The baffle is integrally formed with a protrusion on one side, and is provided with a notch and a vertical rod on the other side. The top end of the protrusion is provided with a slot matched with the vertical rod. The back of the baffle is fixed with a connecting piece and two limiting blocks. The connecting piece and the supporting piece are located between the two limiting blocks. The two sides of the supporting piece are fixed with two reinforcing pieces. The connecting piece comprises an outer frame, a vertical rod and a clamping plate. The outer frame is provided with a movable plate. The top end of the movable plate is integrally formed with a clamping plate. The top end of the outer frame is provided with a through slot matched with the clamping plate. The bottom end of the movable plate is fixed with two vertical rods. The top ends of the two vertical rods are connected with the movable plate. The bottom ends of the two vertical rods penetrate through two springs and two through holes in the bottom end of the outer frame. The problems of complicated installation and disassembly and poor overall load capacity are solved.

[0004] Most of the existing supporting structures support the inner wall of the foundation pit through supporting plates, support the supporting plates through inclined support columns, and fix the structure through bolts or welding to support the inner wall of the foundation pit. However, the structure required for supporting the foundation pit is mostly a prefabricated part, which is assembled by multiple prefabricated parts. The prefabricated parts are of different sizes, making it difficult to transport and handle the parts, which is inconvenient for construction personnel to support the foundation pit. In addition, the supporting structure is not convenient to store and recycle after use. SUMMARY

[0005] The present application aims to solve the problem of the structure required for supporting the foundation pit, which is mostly a prefabricated part, assembled by multiple prefabricated parts, and the prefabricated parts are of different sizes, making it difficult to transport and handle the parts, which is inconvenient for construction personnel to support the foundation pit, and the supporting structure is not convenient to store and recycle after use. The present application provides a foundation pit excavation supporting structure and a supporting method.

[0006] The application specifically adopts the following technical scheme to achieve the above-mentioned purpose:

[0007] A foundation pit excavation supporting structure, comprising a support column, both ends of the support column are provided with an inner groove, a driving shaft is rotatably connected inside the inner groove, one end of the driving shaft is provided with a connecting pipe, and a shelf assembly is threadedly connected to the driving shaft, both sides of one end of the connecting pipe are rotatably connected with a horizontal support plate, and the top of one end of the connecting pipe is rotatably connected with a vertical support plate, the shelf assembly is rotatably connected with the end of the vertical support plate and the horizontal support plate, and the vertical support plate and the horizontal support plate are fixedly connected with a support plate through fixing bolts on one side, an infrared generator is fixedly connected to the vertical support plate, an infrared receiver is fixedly connected to one end of the connecting pipe, the infrared generator and the infrared receiver correspond to each other, a controller is fixedly connected to the top of the support column, and the infrared receiver is electrically connected with the controller.

[0008] By adopting the above technical scheme, the structure of the shelf assembly is moved to one end of the inner groove through the rotary driving shaft, and the structure of the shelf assembly is pulled to the vertical support plate and the horizontal support plate, so that the structure of the shelf assembly is retracted with the connecting pipe, the vertical support plate and the horizontal support plate, thereby recycling the structure, improving the disassembly speed of the foundation pit by the construction personnel, and reducing the volume of the retracted structure, thereby reducing the space occupancy and facilitating the recycling, storage and transportation of the construction personnel.

[0009] Further, the driving shaft comprises a threaded rod rotatably connected inside the inner groove, and one end of the threaded rod is fixedly connected with a rotating shaft.

[0010] By adopting the above technical scheme, the rotating shaft is rotated, and the threaded rod is driven through the rotating threaded rod.

[0011] Further, the connecting pipe comprises a sleeve rod sleeved on the threaded rod, one end of the sleeve rod is fixedly connected with a connecting plate, two horizontal support plates are rotatably connected at both ends of the connecting plate, and the vertical support plate is rotatably connected with the top end of the connecting plate.

[0012] By adopting the above technical scheme, the length of the structure can be adjusted by sliding the sleeve rod out of the inner groove.

[0013] Further, the shelf assembly comprises a driving block threadedly connected to the threaded rod, both sides of the driving block are rotatably connected with a support rod one, the top end of the driving block is rotatably connected with a support rod two, one end of the support rod one is rotatably connected with the end of the horizontal support plate, and one end of the support rod two is rotatably connected with the end of the vertical support plate.

[0014] By adopting the technical scheme, the vertical supporting plate and the transverse supporting plate can be unfolded by rotating the supporting rod one and the supporting rod two.

[0015] Further, the inner side bottom of the inner groove is provided with a sliding groove, the bottom of the driving block is fixedly connected with a sliding block, the sliding block is slidingly connected in the sliding groove, a plurality of limiting grooves are formed in one side of the supporting column, a positioning hole is formed in the sliding block, the positioning hole and the limiting groove correspond to each other, and a positioning clamping piece is inserted between the positioning hole and the limiting groove.

[0016] By adopting the technical scheme, the sliding block can be clamped and limited by the positioning clamping piece, thereby providing an auxiliary supporting point.

[0017] Further, the positioning clamping piece comprises a clamping plate inserted in the positioning hole, clamping strips are rotatably connected to two ends of the clamping plate, and the clamping plate and the clamping strips are rotatably connected through damping rotating shafts.

[0018] By adopting the technical scheme, the sliding block can be clamped and limited by inserting the clamping plate into the positioning hole and the limiting groove.

[0019] Further, the supporting plate member comprises a plurality of connecting rods fixedly connected to one side of the vertical supporting plate and the transverse supporting plate, and the connecting rods are fixedly connected with supporting plates on one side.

[0020] By adopting the technical scheme, the vertical supporting plate and the transverse supporting plate can be fixedly connected with the connecting rods through the fixing bolts, and the supporting plates can be abutted against the inner wall of the foundation pit to form a support, thereby supporting the inner wall of the foundation pit.

[0021] Further, the supporting column is fixedly connected with fixed lugs on both sides, and the fixed lugs are fixedly connected with the bottom surface of the foundation pit through fixed rivets.

[0022] By adopting the technical scheme, the fixed lugs are fixed on the bottom of the foundation pit through the fixed rivets, thereby fixing the supporting column.

[0023] Further, the infrared receiver is internally provided with a signal sending module, the controller is fixedly connected with a buzzer on both sides, and the controller is internally provided with a signal receiving module, a processor and a data transmission module.

[0024] By adopting the technical scheme, the surrounding construction personnel can be warned through the mutual operation of the infrared receiver and the controller.

[0025] A foundation pit excavation supporting method uses the foundation pit excavation supporting structure in any one of the above embodiments, and the method steps are as follows:

[0026] S1: Place the support column at the bottom of the foundation pit, manually rotate the driving shaft, drive the threaded rod to rotate, drive the driving block through the threaded rod to move, and then drive the support rod one and the support rod two to rotate, and the vertical support plate and the transverse support plate can be linked to rotate around the connecting pipe hinge point, so as to expand the support rod one, the support rod two, the vertical support plate and the transverse support plate, so that the vertical support plate and the transverse support plate are in parallel with the connecting plate.

[0027] S2: After the expansion frame assembly, the vertical support plate and the transverse support plate are expanded, continue to rotate the driving shaft, which can drive the driving block to move continuously and top the sleeve rod, so that the sleeve rod and the connecting plate extend away from the support column. When extending, the expansion frame assembly, the vertical support plate and the transverse support plate always maintain the maximum expanded state, thereby adjusting the structure length.

[0028] S3: After completing the operation of S2, the support plate is attached to the inner wall of the foundation pit, and the vertical support plate, the transverse support plate and the connecting plate are attached to the connecting rod, and are fixed by the fixing bolt. The support plate is fixed against the inner wall of the foundation pit.

[0029] S4: Turn on the infrared generator, infrared receiver and controller, debug the three, and debug the controller and external warning terminal.

[0030] S5: After completing the operation of S4, the fixed rivet is fixed on the bottom of the foundation pit, which realizes the fixation of the support column, and the positioning clamp is inserted into the positioning hole and the limiting groove, which forms auxiliary fixation for the driving block. After the operation is completed, the support of the foundation pit can be completed.

[0031] In summary, the present application has at least one of the following beneficial effects:

[0032] 1、The present application can manually rotate the driving shaft when supporting the inner wall of the foundation pit, thereby driving the internal components of the driving shaft to drive the expansion frame assembly, so that the internal components of the expansion frame assembly move and expand the connecting pipe, the vertical support plate and the transverse support plate at the same time, and are fixedly connected with the support plate by the fixing bolt, thereby quickly expanding the structure, which is simple to operate, saves the time spent on splicing support, facilitates the workers to quickly support the foundation pit, and improves the construction efficiency.

[0033] 2、The present application drives the structure of the expansion frame assembly to move towards one end of the inner groove through the rotary driving shaft, thereby driving the structure of the expansion frame assembly to pull the vertical support plate and the transverse support plate, so that the structure of the expansion frame assembly is retracted with the connecting pipe, the vertical support plate and the transverse support plate. In this way, the structure is recycled, the workers' disassembly speed of the foundation pit is improved, and the retracted structure has smaller volume and lower space occupancy, which is convenient for workers to recycle, store and transport.

[0034] 3、The application emits infrared rays under the operation of the infrared ray generator and receives through the infrared ray receiver. When the support plate is deformed under pressure, the vertical support plate will be deformed, and then the irradiation position of the infrared ray generator will be offset. At this time, the infrared ray receiver cannot receive infrared ray irradiation, and then sends a signal to the controller, so that the controller alarms the surrounding, and at the same time, the controller can send a signal to the external warning terminal, so as to remind the surrounding and distant construction personnel, which is convenient for the construction personnel to quickly remedy the foundation pit support, thereby improving the structural safety. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a schematic diagram of the three-dimensional structure of the application;

[0036] Figure 2 is a schematic diagram of the storage structure of the application;

[0037] Figure 3 is a schematic diagram of the structure of the drive shaft and the display rack assembly in the application;

[0038] Figure 4 is a schematic diagram of the structure of the connecting pipe in the application;

[0039] Figure 5 is a schematic diagram of the local structure of the display rack assembly in the application;

[0040] Figure 6 is a schematic diagram of the structure of the positioning clamp in the application;

[0041] Figure 7 is a schematic diagram of the structure of the support plate in the application;

[0042] Figure 8 is a schematic diagram of the electrical connection of the infrared ray generator, the infrared ray receiver and the controller in the application.

[0043] BRIEF DESCRIPTION OF DRAWINGS

[0044] 1, support column; 2, drive shaft; 3, display rack assembly; 4, connecting pipe; 5, vertical support plate; 6, transverse support plate; 7, support plate; 8, infrared ray generator; 9, infrared ray receiver; 10, controller; 11, inner groove; 12, fixed lug; 13, fixed rivet; 14, fixed bolt; 15, limiting groove; 21, push shaft; 22, threaded rod; 31, drive block; 32, support rod one; 33, support rod two; 34, sliding block; 35, clamping plate; 36, clamping strip; 41, sleeve rod; 42, connecting plate; 71, support plate; 72, connecting rod; 101, buzzer. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings Figures 1-8Further details of the application are provided below.

[0046] The application discloses a foundation pit excavation supporting structure and a supporting method.

[0047] Referring to Figure 1 and Figure 2 A foundation pit excavation supporting structure comprises a support column 1, both ends of the support column 1 are provided with an inner groove 11, a driving shaft 2 is rotatably connected inside the inner groove 11, one end of the driving shaft 2 is provided with a connecting pipe 4, a display shelf assembly 3 is threadedly connected to the driving shaft 2, both sides of one end of the connecting pipe 4 are rotatably connected with a horizontal support plate 6, a vertical support plate 5 is rotatably connected to the top of one end of the connecting pipe 4, the display shelf assembly 3 is rotatably connected to the end of the vertical support plate 5 and the horizontal support plate 6, the vertical support plate 5 and the horizontal support plate 6 are fixedly connected with a support plate 7 on one side through a fixing bolt 14, an infrared generator 8 is fixedly connected to the vertical support plate 5, an infrared receiver 9 is fixedly connected to one end of the connecting pipe 4, the infrared generator 8 and the infrared receiver 9 correspond to each other, a controller 10 is fixedly connected to the middle of the top of the support column 1, the infrared receiver 9 is electrically connected to the controller 10, both sides of the support column 1 are fixedly connected with a fixed lug plate 12, and the fixed lug plate 12 and the bottom surface of the foundation pit are fixedly connected through a fixing rivet 13.

[0048] When supporting the foundation pit, the support column 1 can be placed on the ground, and the driving shaft 2 is manually operated to drive the structure of the driving shaft 2 to drive the exhibition stand assembly 3, so that the components of the exhibition stand assembly 3 move towards the connecting pipe 4, at this time the internal structure of the exhibition stand assembly 3 drives the vertical support plate 5 and the horizontal support plate 6 to unfold, so that the vertical support plate 5 and the horizontal support plate 6 are parallel to one end of the connecting pipe 4, and the exhibition stand assembly 3, the connecting pipe 4 and the vertical support plate 5 and the exhibition stand assembly 3, the connecting pipe 4 and the horizontal support plate 6 are in a triangular support state, thereafter, the driving shaft 2 can be rotated to continuously move the components of the exhibition stand assembly 3, thereby abutting the connecting pipe 4 to move the connecting pipe 4, thereby sliding the connecting pipe 4 out of the support column 1, thereby adjusting the length of the structure, here the exhibition stand assembly 3, the vertical support plate 5 and the horizontal support plate 6 always remain in the maximum unfolded state when the connecting pipe 4 moves, after length adjustment, the support plate 7 can be abutted against the inner wall of the foundation pit, so that it is attached to the inner wall, and the vertical support plate 5 and the horizontal support plate 6 are attached to the support plate 7, the vertical support plate 5, the horizontal support plate 6 and the support plate 7 are fixedly connected by the plurality of fixing bolts 14, so as to top support the support plate 7, and turn on the infrared generator 8, the infrared receiver 9 and the controller 10, and debug the three, then debug the controller 10 and the external warning terminal, thereafter, the fixed lug plate 12 is fixed to the bottom of the foundation pit by the fixed rivet 13, and the support column 1 is fixed to the bottom of the foundation pit, so as to fix the structure, thereby achieving the support of the foundation pit, when the inner wall of the foundation pit collapses and deforms the support plate 7, it will cause the vertical support plate 5 to deviate, thereby causing the irradiation position of the infrared generator 8 to deviate, so that the infrared receiver 9 cannot receive the irradiation of the infrared rays, when the infrared receiver 9 loses the light source, the controller 10 can send a signal, after the controller 10 receives the signal, it can alarm the surrounding construction personnel, at the same time, the signal is transmitted to the warning terminal, so as to alarm the construction personnel far away, so as to facilitate the construction personnel to quickly process the foundation pit, thereby improving the functionality of the structure, and improving the safety of the structure for supporting the foundation pit.

[0049] When disassembling the structure, the fixed bolt 14 can be manually removed to disconnect the vertical support plate 5, the horizontal support plate 6 and the support plate 7, after disconnection, the driving shaft 2 can be rotated to move the structure of the exhibition stand assembly 3 towards one end of the inner groove 11, thereby pulling the vertical support plate 5 and the horizontal support plate 6 by the structure of the exhibition stand assembly 3, so that the structure of the exhibition stand assembly 3, the connecting pipe 4, the vertical support plate 5 and the horizontal support plate 6 are retracted, thereby recycling the structure, improving the disassembly speed of the construction personnel for the foundation pit, and the retracted structure has a smaller volume and a lower space occupancy rate, facilitating the construction personnel to recycle, store and transport.

[0050] Referring to Figure 3 and Figure 4 , the driving shaft 2 comprises a threaded rod 22 rotatably connected inside the inner groove 11, one end of the threaded rod 22 is fixedly connected with the rotating shaft 21, the connecting pipe 4 comprises a sleeve rod 41 sleeved on the threaded rod 22, one end of the sleeve rod 41 is fixedly connected with the connecting plate 42, two transverse support plates 6 are rotatably connected at both ends of the connecting plate 42 respectively, and the vertical support plate 5 is rotatably connected with the top end of the connecting plate 42, the shelf assembly 3 comprises a driving block 31 threadedly connected on the threaded rod 22, both sides of the driving block 31 are rotatably connected with support rods one 32, and the top end of the driving block 31 is rotatably connected with a support rod two 33, one end of the support rod one 32 is rotatably connected with the end of the transverse support plate 6, and one end of the support rod two 33 is rotatably connected with the end of the vertical support plate 5.

[0051] Under the action of force, the rotating shaft 21 is rotated, so that the rotating shaft 21 drives the threaded rod 22 to rotate, the rotating threaded rod 22 can drive the driving block 31, so that the driving block 31 slides along the inner groove 11, and then the driving block 31 moves towards the sleeve rod 41, when the driving block 31 moves, the support rod one 32 and the support rod two 33 can be driven, so that the support rod one 32 and the support rod two 33 rotate around the hinge point, and the vertical support plate 5 and the transverse support plate 6 are driven, so that the vertical support plate 5 and the transverse support plate 6 are unfolded with the rotation of the support rod one 32 and the support rod two 33, and then the vertical support plate 5 and the transverse support plate 6 form a parallel state with the connecting plate 42, at this time, the sleeve rod 41, the support rod two 33 and the vertical support plate 5 form a triangular shape with the sleeve rod 41, the support rod one 32 and the transverse support plate 6, so that the shelf assembly 3, the vertical support plate 5 and the transverse support plate 6 form the maximum unfolding state, thereafter, the rotating shaft 21 can be continuously rotated, and then the driving block 31 is continuously moved, so that the driving block 31 abuts against one end of the sleeve rod 41, and then drives the sleeve rod 41 to move, so that it is unfolded from the inner groove 11, and then the length of the structure is adjusted.

[0052] Referring to Figure 5 and Figure 6 , the inner side of the inner groove 11 is provided with a sliding groove, the bottom of the driving block 31 is fixedly connected with a sliding block 34, the sliding block 34 is slidably connected inside the sliding groove, a plurality of limiting grooves 15 are formed on one side of the support column 1, a positioning hole is formed on the sliding block 34, the positioning hole and the limiting groove 15 correspond to each other, and a positioning clamping piece is inserted between the positioning hole and the limiting groove 15, the positioning clamping piece comprises a clamping plate 35 inserted into the positioning hole, clamping strips 36 are rotatably connected at both ends of the clamping plate 35, and the clamping plate 35 and the clamping strip 36 are rotatably connected through a damping rotating shaft.

[0053] When the driving block 31 moves, the sliding block 34 can be driven to slide in the sliding groove, when the length adjustment is completed, the clamping plate 35 can be manually inserted into the positioning hole and the limiting groove 15, and the sliding block 34 is clamped and limited, at this time, the clamping strip 36 is located outside the side wall of the support column 1, and the clamping strip 36 is rotated to clamp the two sides of the support column 1, thereby providing a support point for the driving block 31, and further providing auxiliary support for the shelf assembly 3.

[0054] With reference to Figure 7 The support plate member 7 comprises a plurality of connecting rods 72 fixedly connected to one side of the vertical support plate 5 and the horizontal support plate 6, and one side of the connecting rod 72 is fixedly connected with a support plate 71.

[0055] The vertical support plate 5 and the horizontal support plate 6 are fixedly connected with the connecting rod 72 through the fixing bolts 14, and the support plate 71 is abutted against the inner wall of the foundation pit to form a support, thereby forming a support for the inner wall of the foundation pit, and here, a gap is formed between the support plate 71 and the connecting rod 72, which facilitates the installation of the foundation pit drainage pipe by the construction personnel.

[0056] With reference to Figure 8 The infrared receiver 9 is internally provided with a signal sending module, the controller 10 is fixedly connected with a buzzer 101 on both sides, and the controller 10 is internally provided with a signal receiving module, a processor and a data transmission module.

[0057] When the support plate member 7 is deformed under stress, the vertical support plate 5 will be offset, which will cause the infrared irradiation end of the infrared generator 8 to be offset, so that the infrared receiver 9 cannot receive the infrared rays, when the infrared receiver 9 loses the light source, the controller 10 can be sent a signal through the signal sending module, the signal can be received through the signal receiving module of the controller 10, and the signal can be processed through the processor, after receiving, the buzzer 101 can be driven, so that the buzzer 101 emits an alarm sound around, thereby warning the surrounding construction personnel, at the same time, the processed signal data can be transmitted to the external warning terminal through the data transmitter in the controller 10, so as to warn the construction personnel far away, thereby improving the safety of the support.

[0058] A foundation pit excavation support method, which uses the foundation pit excavation support structure, the method steps are as follows:

[0059] S1: Place the support column 1 at the bottom of the foundation pit, manually rotate the knob shaft 21, drive the threaded rod 22 to rotate, drive the driving block 31 to move through the threaded rod 22, and then drive the support rod one 32 and the support rod two 33 to rotate, which can drive the vertical support plate 5 and the horizontal support plate 6 to rotate around the hinge point of the connecting pipe 4, so as to expand the support rod one 32, the support rod two 33, the vertical support plate 5 and the horizontal support plate 6, so that the vertical support plate 5 and the horizontal support plate 6 are in parallel with the connecting plate 42;

[0060] S2: After the expansion of the shelf assembly 3, the vertical support plate 5 and the horizontal support plate 6, continue to rotate the knob shaft 21, which can drive the driving block 31 to move continuously and top the sleeve rod 41, so that the sleeve rod 41 and the connecting plate 42 extend away from the support column 1, and during the extension, the shelf assembly 3, the vertical support plate 5 and the horizontal support plate 6 always maintain the maximum expansion state, thereby adjusting the structure length;

[0061] S3: After the above S2 operation is completed, the support plate 7 is attached to the inner wall of the foundation pit, and the vertical support plate 5, the horizontal support plate 6 and the connecting plate 42 are attached to the connecting rod 72, and are fixed by the fixing bolt 14, and the support plate 7 is fixed and contacted with the inner wall of the foundation pit.

[0062] S4: Turn on the infrared generator 8, the infrared receiver 9 and the controller 10, debug the three, and debug the controller 10 and the external warning terminal.

[0063] S5: After the above S4 operation is completed, the fixed lug plate 12 is fixed at the bottom of the foundation pit by the fixed rivet 13, which realizes the fixation of the support column 1, and the positioning clamp is inserted into the positioning hole and the limiting groove 15, which forms auxiliary fixation for the driving block 31. After the operation is completed, the support of the foundation pit can be completed.

[0064] Working principle: when the foundation pit is supported, the support column 1 can be placed on the ground, and under the action of force, the driving shaft 21 is rotated, so that the driving shaft 21 drives the threaded rod 22 to rotate, the rotating threaded rod 22 can drive the driving block 31, so that the driving block 31 slides in the inner groove 11, and then the driving block 31 moves towards the sleeve rod 41, when the driving block 31 moves, the support rod one 32 and the support rod two 33 can be driven, so that the support rod one 32 and the support rod two 33 rotate around the hinge point, and the vertical support plate 5 and the horizontal support plate 6 are driven, so that the vertical support plate 5 and the horizontal support plate 6 are unfolded with the rotation of the support rod one 32 and the support rod two 33, and then the vertical support plate 5 and the horizontal support plate 6 form a parallel state with the connecting plate 42, at this time, the sleeve rod 41, the support rod two 33 and the vertical support plate 5 form a triangular shape with the sleeve rod 41, the support rod one 32 and the horizontal support plate 6, so that the maximum unfolding state is formed between the support frame assembly 3, the vertical support plate 5 and the horizontal support plate 6.

[0065] After that, the driving shaft 21 can be continuously rotated, and then the driving block 31 is continuously moved, so that the driving block 31 is placed on one end of the sleeve rod 41, and then the sleeve rod 41 is moved out of the inner groove 11, so that the length of the structure is adjusted. Here, when the connecting pipe 4 moves, the support frame assembly 3, the vertical support plate 5 and the horizontal support plate 6 always maintain the maximum unfolding state. After the length is adjusted, the support plate 7 can be abutted against the inner wall of the foundation pit, so as to be attached to the inner wall, and the vertical support plate 5 and the horizontal support plate 6 are attached to the support plate 7. The vertical support plate 5, the horizontal support plate 6 and the support plate 7 are fixedly connected by the plurality of fixing bolts 14, so as to support the support plate 7. The infrared generator 8, the infrared receiver 9 and the controller 10 are turned on, and the three are debugged. The controller 10 and the external warning terminal are debugged. Then, the fixed lug plate 12 is fixed to the bottom of the foundation pit by the fixed rivet 13, and the support column 1 is fixed to the bottom of the foundation pit, so as to fix the structure, and realize the support of the foundation pit.

[0066] When the inner wall of the foundation pit collapses, the support plate 7 will be deformed under the action of force, which will cause the vertical support plate 5 to deviate, causing the infrared radiation end of the infrared generator 8 to deviate, so that the infrared receiver 9 cannot receive the infrared rays. When the infrared receiver 9 loses the light source, the controller 10 can send signals through the signal sending module, and receive the signals through the signal receiving module of the controller 10, and process them through the processor. After receiving, the buzzer 101 can be driven to emit alarm sound around, so as to warn the surrounding construction personnel. At the same time, the processed signal data is transmitted to the external warning terminal through the data transmitter in the controller 10, so as to warn the distant construction personnel, thereby improving the safety of the support.

[0067] When the structure is disassembled, the fixing bolt 14 can be manually removed, and then the vertical support plate 5, the transverse support plate 6 and the support plate piece 7 are disconnected. After disconnection, the rotating shaft 21 is turned and driven, the end of the driving block 31 moves towards the inner groove 11, and then the support rod one 32 and the support rod two 33 pull the vertical support plate 5 and the transverse support plate 6, so that the support rod one 32 and the support rod two 33 are retracted with the connecting pipe piece 4, the vertical support plate 5 and the transverse support plate 6. In this way, the structure is recycled, the disassembly speed of the construction personnel on the foundation pit is improved, the volume of the retracted structure is small, the space occupancy rate is low, and the construction personnel is convenient for recycling, storage, transportation and use.

Claims

1. A foundation pit excavation support structure comprising a support column (1), characterised in that: Both ends of the support column (1) are provided with an inner groove (11), the inner groove (11) is rotatably connected with a driving shaft (2), one end of the driving shaft (2) is connected with a connecting pipe (4), and the driving shaft (2) is threadedly connected with a shelf assembly (3), both sides of one end of the connecting pipe (4) are rotatably connected with a horizontal support plate (6), and the top of one end of the connecting pipe (4) is rotatably connected with a vertical support plate (5), the shelf assembly (3) is rotatably connected with the end of the vertical support plate (5) and the horizontal support plate (6), one side of the vertical support plate (5) and the horizontal support plate (6) is fixedly connected with a support plate (7) through a fixing bolt (14), the vertical support plate (5) is fixedly connected with an infrared generator (8), one end of the connecting pipe (4) is fixedly connected with an infrared receiver (9), the infrared generator (8) and the infrared receiver (9) correspond to each other, the top of the support column (1) is fixedly connected with a controller (10), and the infrared receiver (9) is electrically connected with the controller (10).

2. A foundation pit excavation support structure according to claim 1, wherein: The driving shaft (2) comprises a threaded rod (22) rotatably connected in the inner groove (11), and one end of the threaded rod (22) is fixedly connected with a rotating shaft (21).

3. A foundation pit excavation support structure according to claim 2, wherein: The connecting pipe (4) comprises a sleeve rod (41) sleeved on the threaded rod (22), one end of the sleeve rod (41) is fixedly connected with a connecting plate (42), both ends of the connecting plate (42) are rotatably connected with the two horizontal support plates (6), and the top of the connecting plate (42) is rotatably connected with the vertical support plate (5).

4. A foundation pit excavation support structure according to claim 3, wherein: The shelf assembly (3) comprises a driving block (31) threadedly connected on the threaded rod (22), both sides of the driving block (31) are rotatably connected with a support rod one (32), and the top of the driving block (31) is rotatably connected with a support rod two (33), one end of the support rod one (32) is rotatably connected with the end of the horizontal support plate (6), and one end of the support rod two (33) is rotatably connected with the end of the vertical support plate (5).

5. A foundation excavation support structure according to claim 4, wherein: The inner side of the inner groove (11) is provided with a sliding groove, the bottom of the driving block (31) is fixedly connected with a sliding block (34), the sliding block (34) is slidably connected in the sliding groove, one side of the support column (1) is provided with a plurality of limiting grooves (15), a positioning hole is formed in the sliding block (34), the positioning hole and the limiting grooves (15) correspond to each other, and a positioning clamping piece is inserted between the positioning hole and the limiting grooves (15).

6. A foundation pit excavation support structure according to claim 5 wherein: The positioning clamping piece comprises a clamping plate (35) inserted in the positioning hole, both ends of the clamping plate (35) are rotatably connected with a clamping strip (36), and the clamping plate (35) and the clamping strip (36) are rotatably connected through a damping rotating shaft.

7. A foundation excavation support structure according to claim 6 wherein: The support plate (7) comprises a plurality of connecting rods (72) fixedly connected on one side of the vertical support plate (5) and the horizontal support plate (6), and one side of the connecting rod (72) is fixedly connected with a support plate (71).

8. A foundation excavation support structure according to claim 7, wherein: Both sides of the support column (1) are fixedly connected with fixed lug plates (12), and the fixed lug plates (12) are fixedly connected with the bottom surface of the foundation pit through fixed rivets (13).

9. A foundation excavation support structure according to claim 8, wherein: The inside of the infrared receiver (9) is provided with a signal sending module, both sides of the controller (10) are fixedly connected with buzzers (101), and the inside of the controller (10) is provided with a signal receiving module, a processor and a data transmission module.

10. A method of supporting an excavation, characterized by: The method steps are as follows by using the foundation pit excavation support structure in claim 9: S1: the support column (1) is placed at the bottom of the foundation pit, the driving shaft (21) is manually rotated to drive the threaded rod (22) to rotate, the driving block (31) is driven by the threaded rod (22) to move, and then the support rod one (32) and the support rod two (33) are rotated, the vertical support plate (5) and the horizontal support plate (6) are hinged to the connecting pipe fitting (4) hinge point, and the support rod one (32), the support rod two (33), the vertical support plate (5) and the horizontal support plate (6) are unfolded, so that the vertical support plate (5) and the horizontal support plate (6) are in parallel with the connecting plate (42); S2: after the unfolding assembly (3), the vertical support plate (5) and the horizontal support plate (6) are unfolded, the driving shaft (21) is continuously rotated to continuously drive the driving block (31) to move and top the sleeve rod (41), so that the sleeve rod (41) and the connecting plate (42) extend away from the support column (1), and when extending, the unfolding assembly (3), the vertical support plate (5) and the horizontal support plate (6) always maintain the maximum unfolded state, and then the structure length is adjusted; S3: after the above S2 operation is completed, the support plate (7) is attached to the inner wall of the foundation pit, and the vertical support plate (5), the horizontal support plate (6) and the connecting plate (42) are attached to the connecting rod (72), and are fixed by the fixing bolt (14), and the support plate (7) is fixedly abutted on the inner wall of the foundation pit; S4: turn on the infrared generator (8), the infrared receiver (9) and the controller (10), debug the three, and debug the controller (10) and the external warning terminal; S5: after the above S4 operation is completed, the fixed lug plate (12) is fixed on the bottom of the foundation pit by the fixed rivet (13), so as to fix the support column (1), and the positioning clamp is inserted into the positioning hole and the limiting groove (15) to form auxiliary fixation of the driving block (31), and after the operation is completed, the support of the foundation pit is completed.

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