Foundation pit supporting cast-in-situ bored pile construction equipment

Abstract

The invention belongs to the technical field of foundation pit supporting cast-in-situ bored pile construction, and particularly relates to foundation pit supporting cast-in-situ bored pile construction equipment which comprises an equipment trolley, supporting assemblies are arranged on the front section and the rear section of the equipment trolley, a drilling assembly is arranged on the top of the equipment trolley, and a pouring assembly is arranged on the right side of the equipment trolley. A mounting net plate at the top of the water storage tank can preliminarily filter entering clear water, so that impurities are prevented from entering a pouring system to cause pipeline blockage, the concrete pouring quality is guaranteed, and the bearing capacity and the anti-seepage performance of the cast-in-place pile are further guaranteed; the electric driving rotating rod drives the fan plates to rotate at a high speed to generate water flow impact force, the inner wall of the cleaning barrel and a communicating pipeline can be comprehensively scoured, residual concrete chippings are removed, concrete is prevented from being solidified to block the pipeline, and the equipment maintenance time and cost are reduced. And the rotating blade plates on the outer wall of the perforated communicating pipe rotate to prevent impurities from being accumulated to block the pipeline, so that the cleaning effect is further improved, and the continuity and stability of filling operation are guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of construction technology of bored piles for foundation pit support, specifically a construction equipment for bored piles for foundation pit support. Background Technology

[0002] In the field of foundation pit construction, bored piles are a commonly used support structure, and the performance of the construction equipment directly affects the safety and efficiency of the project. Traditional foundation pit support bored pile construction equipment often adopts a split design, where drilling, grouting, and support functions are completed independently by different equipment. This model not only requires multiple equipment scheduling, extending the construction cycle, but also makes it difficult to ensure the continuity of construction accuracy during equipment switching, especially under complex geological conditions, which can easily lead to construction deviations.

[0003] In terms of grouting operations, the storage and cleaning functions of traditional grouting equipment are independent. After grouting, the residual concrete in the delivery pipeline is prone to solidification, requiring a lot of time and water resources for cleaning. This not only increases construction costs but also easily causes pipeline blockage, affecting the continuity of subsequent grouting operations. It also leads to poor filtration effect of the water storage tank, allowing impurities in the water to easily enter the grouting system, causing blockage of the grouting pipeline, affecting the grouting quality of concrete, and thus reducing the bearing capacity and impermeability of the cast-in-place pile. Based on this, a construction equipment for bored cast-in-place piles for foundation pit support is proposed to solve the above problems. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a construction equipment for drilling and grouting piles for foundation pit support, including an equipment trolley, with support components provided at the front and rear sections of the equipment trolley, a drilling component provided at the top of the equipment trolley, and a grouting component provided on the right side of the equipment trolley; The infusion assembly includes a receiving box fixedly installed on the right side of the equipment trolley. A guide plate is fixedly connected to the outer wall of one end of the front of the receiving box. A water storage tank is fixedly installed at the bottom of the inner wall of the rear section of the receiving box. An end cap is fixedly installed on the inner wall of the top of the water storage tank. A water inlet pipe is connected to the top of the end cap. An installation mesh plate is fixedly installed on the inner wall of the middle section of the end cap. A connecting pump pipe is connected to the top of the installation mesh plate. An adjusting motor is fixedly installed on the top of the middle section of the receiving box. A threaded push rod is fixedly installed at the bottom output end of the adjusting motor. A traction block is threadedly connected to the outer wall of the threaded push rod. A cleaning cylinder is fixedly connected to the inner side of the traction block. An installation ring frame is fixedly connected to the inner wall of the cleaning cylinder. An electric drive rotating rod is driven to the bottom of the inner wall of the cleaning cylinder. A fan plate is fixedly connected to the outer wall of the electric drive rotating rod. A connecting pipe is connected between the water storage tank and the cleaning cylinder. A perforated connecting pipe is driven to the bottom of the installation mesh plate. A rotating blade is fixedly connected to the outer wall of the perforated connecting pipe.

[0006] As a preferred technical solution of this application, the support assembly includes a receiving top plate fixedly installed on the top of the equipment trolley, telescopic side rods fixedly installed on the outer walls of the front and rear ends of the receiving top plate, a hydraulic support rod fixedly installed at the bottom of the outer end of the telescopic side rod, a limit support leg fixedly connected to the bottom of the hydraulic support rod, a connecting side plate fixedly connected to the outer wall of the outer end of the telescopic side rod, and a support plate fixedly installed on the outer wall of the connecting side plate.

[0007] As a preferred technical solution of this application, the drilling assembly includes a device body fixedly installed on the top of the receiving plate. A winding frame is fixedly installed on the top of the device body. A winding motor is fixedly installed on the outer wall of one end of the front of the winding frame. A drive shaft is fixedly connected to the output end of the winding motor. A winding roller is fixedly connected to the outer wall of the drive shaft. A winding wire harness is wound on the outer wall of the winding roller. An extension arm is fixedly installed on the top of the device body. A hinged forearm is hinged to one end of the extension arm. A connecting rod is fixedly connected to the outer end of the hinged forearm. A limit support is fixedly connected to the bottom of the connecting rod. A hydraulic push rod one is fixedly installed on the bottom outer wall of the extension arm. A hydraulic push rod two is fixedly installed on the top outer wall of the hinged forearm. An arc-shaped hinge rod is hinged to the top outer wall of the hydraulic push rod two. A slide rod is fixedly connected to the bottom of the winding wire harness. A drill rod is fixedly installed at the bottom of the slide rod. A connecting slide rod is fixedly connected to the bottom of the drill rod. A drill body is fixedly installed at the bottom of the connecting slide rod. A limit plate is fixedly connected to the outer wall of the connecting rod.

[0008] As a preferred technical solution of this application, the connecting side plate and the support plate are symmetrically arranged at the front and rear ends of the equipment trolley, and the support plate is folded.

[0009] As a preferred technical solution of this application, the top of the hydraulic push rod is hinged to the bottom of the hinged arm, the bottom of the arc-shaped hinge rod is hinged to the outer wall of the hinged arm, and the limiting plate is disposed on the outer wall of the upper and lower sections of the connecting rod.

[0010] As a preferred technical solution of this application, a transmission roller is fixedly connected to the outer wall of the hinge joint between the extended upper arm and the hinged lower arm, and the transmission roller is fixedly connected to the outer wall of the upper section of the connecting rod. The winding harness is driven by the transmission roller, and the slide rod and the connecting slide rod are respectively sleeved on the inner wall of the upper and lower limit plates.

[0011] As a preferred technical solution of this application, the middle section of the receiving box is provided with a limiting slide, the traction block is slidably connected to the inner wall of the limiting slide, and the connecting pump pipe is connected to the inner wall of the mounting ring frame.

[0012] As a preferred technical solution of this application, the connecting pipe is connected to the inner wall of the upper section of the water storage tank, and the connecting pipe is also connected to the inner wall of the lower section of the cleaning cylinder.

[0013] The beneficial effects of this invention are as follows: 1. This invention, through its efficient cleaning and filtration design, ensures grouting quality and reduces maintenance costs. In the grouting assembly, the mesh plate on top of the water storage tank can initially filter the incoming clean water, preventing impurities from entering the grouting system and causing pipe blockage, thus ensuring the quality of concrete grouting and consequently ensuring the bearing capacity and impermeability of the grouting pile. The cleaning cylinder can move up and down under the drive of the adjusting motor, and the water flow impact force generated by the high-speed rotation of the fan plate driven by the electric drive rod can thoroughly flush the inner wall of the cleaning cylinder and the connecting pipes, removing residual concrete debris, preventing concrete from solidifying and clogging the pipes, and reducing equipment maintenance time and costs. The rotating blades on the outer wall of the perforated connecting pipe can prevent impurities from accumulating and clogging the pipes, further improving the cleaning effect and ensuring the continuity and stability of the grouting operation.

[0014] 2. This invention improves construction continuity and efficiency through an integrated structural design. The equipment integrates the support components, drilling components, and grouting components onto a unified carrier, eliminating the need for multiple scheduling of different functional devices as required by traditional split-type equipment. This effectively avoids time losses and accuracy deviations during equipment switching. After the support components complete equipment fixation and foundation pit protection, the drilling components can be directly started for drilling operations. After drilling is completed, the grouting components can quickly connect to carry out concrete grouting. The seamless connection of each process significantly shortens the overall construction cycle while ensuring the continuity of construction accuracy in each stage, providing dual guarantees for the progress and quality of foundation pit construction. 3. This invention enhances construction safety through multi-dimensional support and protection design. In the support components, the telescopic side rods can flexibly adjust the support range according to the width of the construction area. The hydraulic support rods drive the limiting legs to make close contact with the ground, increasing the contact area to distribute the weight of the equipment and prevent the equipment from shifting or tilting due to vibration during construction. The symmetrically arranged and folded support plates can fit tightly against the sidewalls of the pit, preventing the surrounding loose soil or gravel from falling and providing temporary support for the pit sidewalls, reducing the risk of sidewall collapse. In the drilling components, the limiting plate limits and guides the sliding rods and connecting sliding rods, ensuring that the drill body drills vertically and avoiding safety hazards caused by hole displacement, providing comprehensive safety protection for construction personnel and equipment. Attached Figure Description

[0015] The invention will now be further described with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial structural diagram of the support component of the present invention; Figure 3 This is a partial structural diagram of the drilling assembly of the present invention; Figure 4 This is a schematic diagram of the back structure of the present invention; Figure 5 This is the invention Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is the invention Figure 4 Enlarged structural diagram at point B; Figure 7 This is a partial structural diagram of the receiving box of the present invention; Figure 8 This is a partial structural diagram of the internal structure of the water storage tank of the present invention.

[0017] In the diagram: 1. Equipment trolley; 2. Top plate support; 3. Telescopic side rod; 4. Hydraulic support rod; 5. Limiting leg; 6. Connecting side plate; 7. Support plate; 8. Equipment body; 9. Winding frame; 10. Winding motor; 11. Drive shaft; 12. Winding roller; 13. Winding harness; 14. Slide rod; 15. Drill rod; 16. Connecting slide rod; 17. Drill body; 18. Extending boom; 19. Articulated forearm; 20. Connecting rod; 21. Limiting support; 22. Hydraulic push rod one; 23. Hydraulic push rod II; 24. Arc-shaped hinged rod; 25. Transmission roller; 26. Limiting plate; 27. Receiving box; 28. Guide inclined plate; 29. ​​Water storage tank; 30. End cover; 31. Water inlet connecting pipe; 32. Mounting mesh plate; 33. Connecting pump pipe; 34. Mounting ring frame; 35. Cleaning cylinder; 36. Electric drive rotating rod; 37. Fan plate; 38. Adjusting motor; 39. Threaded push rod; 40. Traction block; 41. Connecting pipe; 42. Connecting pipe with holes; 43. Rotating blade. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0019] Implementation, for example Figures 1 to 8 As shown, a foundation pit support drilling and grouting pile construction equipment, after entering the construction area, first uses support components to achieve stable support for the equipment and temporary protection around the foundation pit, providing a safe and stable construction environment for subsequent drilling operations. This process uses the equipment trolley 1 as the basic carrier, and the supporting top plate 2 fixedly installed on its top is not only the installation base of the drilling components, but also the core load-bearing structure of the support components. When the equipment needs to be fixed, the telescopic side rods 3 fixedly installed on the outer walls of the front and rear ends of the supporting top plate 2 will extend and retract according to the width requirements of the construction area, extending the support range to the edge of the foundation pit on both sides of the equipment trolley 1. After the telescopic side rods 3 are adjusted to the preset length, the hydraulic support rods 4 fixedly installed at the bottom of their outer ends start to start, driven by hydraulic power. The telescopic side rod 3 extends downwards until the bottom fixed connection of the limiting leg 5 is in close contact with the ground and generates sufficient support force. At this time, the limiting leg 5 increases the contact area with the ground, disperses the overall weight of the equipment, and prevents the equipment from shifting or tilting due to vibration during construction. The connecting side plate 6 fixedly connected to the outer wall of the telescopic side rod 3 will move synchronously with the extension of the telescopic side rod 3. Since the connecting side plate 6 and the support plate 7 are symmetrically arranged at the front and rear ends of the equipment trolley 1, and the support plate 7 adopts a folded design, this structural design allows the support plate 7 to fit tightly against the side wall of the pit. On the one hand, it can prevent loose soil or gravel from falling around the pit, and on the other hand, it can provide temporary support for the side wall of the pit, reduce the risk of side wall collapse, and define a safe construction space for subsequent drilling operations. After the support components complete the equipment fixation and foundation pit protection, the drilling components start to carry out the drilling operation of the grouting pile holes. The power transmission and operation adjustment of the drilling components are carried out around the equipment body 8, which is fixedly installed on the top of the supporting top plate 2. The winding frame 9 on the top of the equipment body 8 provides key support for the transmission of drilling power. When drilling is required, the winding motor 10 fixedly installed on the outer wall of one end of the front of the winding frame 9 starts first, driving the drive shaft 11 fixedly connected to the output end to rotate. The drive shaft 11 then drives the winding roller 12 fixedly connected to the outer wall to rotate synchronously. At this time, the winding bundle 13 wrapped on the outer wall of the winding roller 12 will be unwound or wound according to the drilling depth requirements. To achieve flexible adjustment of the drilling position, an extended boom 18 fixedly installed on the top of the equipment body 8 and a hinged arm 19 form an adjustable boom structure. One end of the extended boom 18 is hinged to the hinged arm 19, and a transmission roller 25 fixedly connected to the outer wall of the hinge not only strengthens the connection but also guides the winding harness 13, ensuring its stable transmission connection to the outer wall of the transmission roller 25 and preventing displacement or wear during movement. When adjusting the drilling position, a hydraulic push rod fixedly installed on the bottom outer wall of the extended boom 18... 22 will start. Since the top of the hydraulic push rod 22 is hinged to the bottom of the articulated arm 19, it can push the articulated arm 19 to rotate around the hinge point with the extended arm 18 through hydraulic extension and retraction, so as to realize the up and down angle adjustment of the boom. The hydraulic push rod 23, which is fixedly installed on the top outer wall of the articulated arm 19, will also move in coordination. The arc-shaped hinge rod 24, which is hinged to the top outer wall of the hydraulic push rod 23, is hinged to the bottom of the articulated arm 19. Through the extension and retraction of the hydraulic push rod 23, the arc-shaped hinge rod 24 can assist in adjusting the posture of the articulated arm 19 and further optimize the accuracy of the drilling position. After the boom is adjusted to the preset drilling position, the connecting rod 20 fixedly connected to the outer end of the articulated forearm 19 will drive the bottom fixedly connected limiting support 21 to contact the ground, thus initially positioning the drilling area. The limiting plate 26 fixedly connected to the outer wall of the connecting rod 20 is set on the outer wall of the upper and lower sections of the connecting rod 20. Its function is to limit and guide the sliding rod 14 and the connecting sliding rod 16, ensuring that the sliding rod 14 and the connecting sliding rod 16 can move stably along the fixed trajectory when they are respectively sleeved on the inner wall of the upper and lower limiting plates 26. The sliding rod 14 fixedly connected to the bottom of the take-up bundle 13 moves along the limiting track under the unwinding action of the take-up roller 12. As the guide plate 26 moves downward, the drill rod 15, which is fixedly installed at the bottom of the slide rod 14, descends synchronously. The connecting slide rod 16, which is fixedly connected to the bottom of the drill rod 15, drives the drill body 17, which is fixedly installed at the bottom, to contact the ground. Then, the drill body 17 starts and begins drilling. During the drilling process, the winding bundle 13 continues to unwind, and the drill body 17 continues to go deeper until a grouting pile hole with the design depth is formed. During this process, the limiting plate 26 always limits the slide rod 14 and the connecting slide rod 16 to ensure that the drilling direction of the drill body 17 is vertical and to avoid problems such as hole position deviation or irregular hole diameter. After the drilling assembly completes the drilling of the pile hole, the grouting assembly starts to carry out the concrete grouting operation. At the same time, the grouting system is cleaned and the water source is filtered before and after grouting to ensure the continuity of the grouting operation and the quality of the concrete. The grouting assembly uses the receiving box 27 fixedly installed on the right side of the equipment trolley 1 as the core container. The guide plate 28 fixedly connected to the outer wall of one end of the front of the receiving box 27 is used to transport concrete raw materials into the receiving box 27. The raw materials can enter the receiving box 27 quickly and smoothly through the inclined guide plate 28, avoiding the accumulation and blockage of raw materials during the feeding process. The water storage tank 29, fixedly installed at the bottom of the inner wall of the rear section of the container 27, is used to store the cleaning water required for the grouting operation. The end cap 30, fixedly installed on the inner wall of the top of the water storage tank 29, not only serves as a seal but also provides an installation base for the water inlet and filtration structure. When water needs to be added to the water storage tank 29, clean water is injected into the tank through the water inlet connecting pipe 31 connected to the top of the end cap 30. Before entering the water storage tank 29, the clean water passes through the installation mesh plate 32 fixedly installed on the inner wall of the middle section of the end cap 30. The installation mesh plate 32 can perform preliminary filtration of impurities in the water, preventing impurities from entering the water storage tank 29 and then entering the grouting system with the water flow, causing pipe blockage. The connecting pump pipe 33 connected to the top of the installation mesh plate 32 is used to transport the filtered clean water or concrete to the cleaning cylinder 35. Since the connecting pump pipe 33 is connected to the inner wall of the installation ring frame 34, and the installation ring frame 34 is fixedly connected to the inner wall of the top of the cleaning cylinder 35, the water or concrete can stably enter the interior of the cleaning cylinder 35 through the connecting pump pipe 33. During concrete pouring, the concrete material in the container 27, under the action of the conveying device, enters the cleaning cylinder 35 through the connecting pump pipe 33, and then is injected into the grouting pile hole through the conveying structure at the bottom of the cleaning cylinder 35, completing the pouring operation. Before and after the pouring operation, the pouring pipeline and the cleaning cylinder 35 need to be cleaned. At this time, the connecting pipe 41 connecting the water storage tank 29 and the cleaning cylinder 35 starts to work. Since the connecting pipe 41 is connected to the inner wall of the upper section of the water storage tank 29 and the inner wall of the lower section of the cleaning cylinder 35, the filtered clean water in the water storage tank 29 can pass through... The connecting pipe 41 enters the cleaning cylinder 35; at the same time, the regulating motor 38 fixedly installed at the top of the middle section of the receiving box 27 starts, driving the threaded push rod 39 fixedly installed at the bottom output end to rotate. The traction block 40, which is threaded to the outer wall of the threaded push rod 39, is slidably connected to the inner wall of the limiting slide opening in the middle section of the receiving box 27. Under the rotation of the threaded push rod 39, it will move up and down along the limiting slide opening. The cleaning cylinder 35, which is fixedly connected to the inner side of the traction block 40, moves up and down synchronously. This movement can adjust the position of the cleaning cylinder 35 to ensure that the cleaning range covers the entire injection pipeline. During the cleaning process, the electrically driven rotating rod 36, which is connected to the bottom of the inner wall of the cleaning cylinder 35, is activated, causing the fan plate 37, which is fixedly connected to the outer wall, to rotate at high speed. The water flow generated by the rotation of the fan plate 37 can thoroughly flush the inner wall of the cleaning cylinder 35 and the connecting pipe, washing away residual concrete debris and preventing concrete from solidifying and clogging the pipe. During the water flow, the perforated connecting pipe 42, which is connected to the bottom of the installation mesh plate 32, drives the rotating blade 43, which is fixedly connected to the outer wall, to rotate. The rotation of the rotating blade 43 can stir the impurities at the bottom of the installation mesh plate 32, preventing them from accumulating and clogging the perforated connecting pipe 42. On the other hand, it can further promote the circulation of water flow and improve the cleaning effect. The wastewater after cleaning can be discharged through a special drainage structure to ensure that the grouting components remain clean after each grouting operation and do not affect subsequent construction. At the same time, the filtration function of the water storage tank 29 continuously ensures the water quality entering the grouting system, preventing impurities from affecting the grouting quality of the concrete, thereby ensuring that the bearing capacity and impermeability of the grouting pile meet the design requirements.

[0020] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0021] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A construction equipment for a diaphragm wall bored pile, comprising an equipment trolley (1), characterized in that: The equipment trolley (1) is provided with a supporting assembly at the front and rear sections, a drilling assembly is arranged on the top of the equipment trolley (1), and a perfusion assembly is arranged on the right side of the equipment trolley (1); The perfusion assembly comprises a containing box (27) fixedly installed on the right side of the equipment trolley (1), a material guiding inclined plate (28) is fixedly connected to the outer wall of the front end of the containing box (27), a water storage tank (29) is fixedly installed on the inner wall of the rear section of the containing box (27), an end cover (30) is fixedly installed on the inner wall of the top of the water storage tank (29), a water inlet communication pipe (31) is arranged in communication with the top of the end cover (30), an installation mesh plate (32) is fixedly installed on the inner wall of the middle section of the end cover (30), a communication pump pipe (33) is arranged in communication with the top of the installation mesh plate (32), an adjusting motor (38) is fixedly installed on the top of the middle section of the containing box (27), a threaded push rod (39) is fixedly installed on the bottom output end of the adjusting motor (38), a traction block (40) is threadedly connected to the outer wall of the threaded push rod (39), a cleaning cylinder (35) is fixedly connected to the inner side of the traction block (40), an installation ring frame (34) is fixedly connected to the inner wall of the top of the cleaning cylinder (35), an electric drive rotating rod (36) is drivingly connected to the inner wall of the bottom of the cleaning cylinder (35), a fan plate (37) is fixedly connected to the outer wall of the electric drive rotating rod (36), a communication pipe (41) is arranged in communication between the water storage tank (29) and the cleaning cylinder (35), a perforated communication pipe (42) is drivingly connected to the bottom of the installation mesh plate (32), and a rotating leaf plate (43) is fixedly connected to the outer wall of the perforated communication pipe (42).

2. The foundation pit supporting cast-in-place pile construction equipment according to claim 1, characterized in that: The supporting assembly comprises a bearing top plate (2) fixedly installed on the top of the equipment trolley (1), telescopic side rods (3) are fixedly installed on the outer walls of the front and rear ends of the bearing top plate (2), hydraulic supporting rods (4) are fixedly installed on the outer end bottoms of the telescopic side rods (3), limiting supporting legs (5) are fixedly connected to the bottoms of the hydraulic supporting rods (4), connecting side plates (6) are fixedly connected to the outer walls of the outer ends of the telescopic side rods (3), and supporting protection plates (7) are fixedly installed on the outer walls of the connecting side plates (6).

3. The construction equipment for a cast-in-place pile of a foundation pit support according to claim 1, characterized in that: The drilling assembly comprises a device body (8) fixedly installed on the top of the receiving roof (2), a winding frame (9) fixedly installed on the top of the device body (8), a winding motor (10) fixedly installed on the outer wall of the front end of the winding frame (9), a driving shaft (11) fixedly connected to the output end of the winding motor (10), a winding roller (12) fixedly connected to the outer wall of the driving shaft (11), a winding wire harness (13) wound on the outer wall of the winding roller (12), an extension arm (18) fixedly installed on the top of the device body (8), a hinged small arm (19) hingedly connected to the top end of the extension arm (18), a connecting rod (20) fixedly connected to the outer end of the hinged small arm (19), a limiting support (21) fixedly connected to the bottom of the connecting rod (20), a hydraulic push rod I (22) fixedly installed on the outer wall of the bottom of the extension arm (18), a hydraulic push rod II (23) fixedly installed on the outer wall of the top of the hinged small arm (19), an arc-shaped hinged rod (24) hingedly connected to the outer wall of the top of the hydraulic push rod II (23), a slide rod (14) fixedly connected to the bottom of the winding wire harness (13), a drill rod (15) fixedly installed on the bottom of the slide rod (14), a connecting slide rod (16) fixedly connected to the bottom of the drill rod (15), a drill body (17) fixedly installed on the bottom of the connecting slide rod (16), and a limiting plate (26) fixedly connected to the outer wall of the connecting rod (20).

4. The construction equipment for a foundation pit support cast-in-place pile according to claim 2, characterized in that: The connecting side plates (6) and the supporting plates (7) are symmetrically arranged on the front and rear ends of the device trolley (1), and the supporting plates (7) are arranged in a folded shape.

5. The construction equipment for a foundation pit support cast-in-place pile according to claim 3, characterized in that: The hydraulic push rod I (22) is hingedly connected to the bottom of the hinged small arm (19), the arc-shaped hinged rod (24) is hingedly connected to the outer wall of the bottom of the hinged small arm (19), and the limiting plate (26) is arranged on the outer walls of the upper and lower sections of the connecting rod (20).

6. The construction equipment for a foundation pit support cast-in-place pile according to claim 3, characterized in that: The outer wall of the hinge joint between the extension arm (18) and the hinged small arm (19) is fixedly connected with a transmission roller (25), the transmission roller (25) is fixedly connected to the outer wall of the upper section of the connecting rod (20), the winding wire harness (13) is transmissionally connected to the transmission roller (25), and the slide rod (14) and the connecting slide rod (16) are respectively sleeved on the inner walls of the upper and lower limiting plates (26).

7. The construction equipment for a foundation pit support cast-in-place pile according to claim 1, characterized in that: The containing box (27) is provided with a limiting sliding opening in the middle section, the traction block (40) is slidingly connected to the inner wall of the limiting sliding opening, and the communicating pump pipe (33) is communicatively arranged in the inner wall of the mounting ring frame (34).

8. The construction equipment for a foundation pit support cast-in-place pile according to claim 1, characterized in that: The communicating pipe (41) is communicatively arranged in the inner wall of the upper section of the water storage tank (29), and the communicating pipe (41) is communicatively arranged in the inner wall of the lower section of the cleaning cylinder (35).

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