Sand compaction pile construction device and construction method
Through automated casing lifting and quantitative sand filling technology, the problem of uneven density in the construction of existing tight sand piles is solved, and the construction efficiency and quality are improved.
Patent Information
- Application Number
- CN202510959848.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-11
- Publication Date
- 2025-08-29
AI Technical Summary
During the construction of existing tight sand piles, the lifting height of the casing and the filling depth of the sand material are difficult to control evenly, resulting in uneven density of each layer of the sand pile, affecting the construction quality.
A construction device including a tripod pile driver, a pair of winch pile driver and pulley is adopted to automatically lift the casing through a motor-driven rack and rack system, and the quantitative filling of sand material is controlled by using weight sensors and electric push rods to ensure the uniformity of the compactness of each layer of sand pile.
The automatic improvement of casing and precise control of sand materials are achieved, construction efficiency and construction quality are improved, the overall density uniformity of the squeezed sand piles is ensured, and human error and loosening problems are reduced.
Smart Images
Figure CN120556451A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of foundation treatment and pile foundation construction, and in particular to a compacted sand pile construction device and a construction method. Background Art
[0002] In the construction industry, the stability of the foundation is crucial to the safety and stability of the entire building structure. For weak or loose foundations, traditional foundation treatment methods may not meet project requirements, necessitating more effective reinforcement technologies. The emergence of compacted sand pile construction devices addresses the issue of insufficient bearing capacity in weak or loose foundations.
[0003] In weak or loose foundations, the soil layer has poor strength and stability, making it difficult to bear the load of the superstructure, leading to building settlement, tilting, and even damage. Using the construction machinery and methods of sunken cast-in-place piles to form compacted sand piles can compact the surrounding weak or loose soil layers. The sand piles and the compacted soil between the piles together form a bearing layer, forming a composite foundation and improving the foundation's bearing capacity and stability.
[0004] Compacted sand piles are a common foundation treatment method and are widely used in soft soil foundation reinforcement projects. At present, the construction of compacted sand piles is mainly achieved through the vibration pipe sinking method and the impact drilling method. Among them, the impact drilling method is widely used in soft soil foundation construction because it causes less disturbance to the surrounding soil and is less likely to cause settlement of adjacent buildings or the ground during construction. The impact drilling method uses a drop hammer to add sand material layer by layer in the casing and repeatedly hammers the sand material to form a compacted sand pile. However, during the construction process, the lifting height of the casing and the filling depth of the sand material each time mostly rely on manual experience, resulting in the difficulty of uniformly controlling the lifting height of the casing and the filling amount of sand material. When the compacted sand pile is hammered into shape in layers, the density of each layer of the sand pile is different, resulting in uneven overall density of the compacted sand pile, affecting the construction quality.
[0005] In view of the above-mentioned related technologies, a compacted sand pile construction device and a construction method are provided. Summary of the Invention
[0006] The purpose of this application is to provide a compacted sand pile construction device and construction method, aiming to improve the problem in the prior art that the lifting height of the casing and the filling depth of the sand material each time rely mostly on manual experience, resulting in difficulty in uniformly controlling the lifting height of the casing and the filling amount of the sand material. When the compacted sand pile is hammered into shape in layers, the density of each layer of the sand pile is different, resulting in uneven density of the overall compacted sand pile, which affects the construction quality.
[0007] The present application provides a compacted sand pile construction device, comprising a tripod pile driver, a double winch pile driver and a pulley, wherein the pulley is mounted on the upper part of the tripod pile driver, and ropes are wound around the outside of the winches on both sides of the double winch pile driver, the ropes are slidably connected to the inner side of the pulley, one end of the rope is fixedly connected to a drop hammer, a casing is installed in a drilled hole formed by hammering the drop hammer just below the drop hammer, the outside of the casing is slidably connected to a base plate, located on the ground, the upper part of the base plate is fixedly connected to a lifting mechanism, the lifting mechanism comprises a support frame, the support frame is fixedly connected to the upper rear side of the base plate, the interior of the support frame is fixedly connected to a rack, the support frame The outside of the support frame is slidably connected to the shell, and a motor is installed on the left side of the shell. The output end of the motor is fixedly connected to the drive shaft, and the outside of the drive shaft is fixedly connected to a gear, and the gear is meshed with the rack. The front side of the shell is fixedly connected to a connecting frame, and the left and right sides of the connecting frame are fixedly connected to a clamping assembly, and the clamping assembly is used to tighten and clamp the sleeve. The clamping assembly includes an electric push rod, which is fixedly connected to the left and right sides of the connecting frame, and a clamp is fixedly connected to one end of the electric push rod. A spring is provided on the outside of the electric push rod to increase the tightness of the sleeve clamping, and the clamp is clamped on the outside of the sleeve.
[0008] The outer cover is fixedly provided with a spring, and the outer cover is fixedly provided with a spring, and the outer cover is rotatably connected to the upper and lower surfaces of the discharging pipe, and the upper and lower surfaces of the discharging pipe are fixedly provided with a fixing plate.
[0009] Preferably, the four inner corners of the base plate are all snap-connected with positioning pins, the inner threads of the positioning pins are connected with extension bolts, the tops of the extension bolts are fixedly connected with connecting blocks, and the bottoms of the extension bolts are fixedly connected with threaded cone pins, so that the height lifting equipment and the sand material control and filling equipment are firmly installed on the ground.
[0010] Preferably, the spring is fixedly connected to one side of the connecting frame at one end away from the spring, and is fixedly connected to one side of the clamp at one end close to the spring.
[0011] Preferably, a weight sensor is fixedly connected to the left side of the movable plate, the movable plate is rotatably connected to the inside of the discharge pipe, and the movable plate is located at the connection between the discharge pipe and the filling hopper.
[0012] Preferably, one end of the second spring is fixedly connected to the left side of the movable plate, and the other end of the second spring is fixedly connected to the upper and lower inner walls of the discharge pipe.
[0013] Preferably, the inner rear side and right side of the support frame are provided with slide grooves, and the rear side and right side of the shell are fixedly connected with protrusions, and the protrusions are slidably connected to the inside of the slide grooves, ensuring stability when the height of the sleeve is lifted.
[0014] Preferably, the drive shaft is rotatably connected to the inside of the left and right sides of the shell, and the gear is installed inside the shell to protect the gear.
[0015] Preferably, the bottom of the two right brackets of the tripod pile driver are fixedly connected with a cross bar, the bottom of the left side of the tripod pile driver is fixedly connected with a positioning plate, and the four inner corners of the positioning plate are all engaged with ground nails to ensure the stability of the tripod pile driver.
[0016] Preferably, a compacted sand pile construction method comprises the following steps: S1. First, after determining the pile position, activate the double-capstan pile driver, repeatedly lowering the drop hammer and releasing and retracting the rope to drill the pile hole. When installing the casing, align the through-hole on the base plate with the pile hole position. Use an external tool to hammer the positioning pin into the ground. Insert the extension bolt into the positioning pin. Turn the connecting block to gradually unscrew the extension bolt from the positioning pin. Once the extension bolt is completely removed, screw the threaded cone pin into the ground. The external threaded ridges strengthen the base plate's fixing effect, improving installation stability and construction efficiency, reducing errors and loosening, and improving overall construction quality.
[0017] S2. Secondly, install the casing in the pile hole, start the electric push rod 1, drive the clamp to clamp and fix the casing, and at the same time, the spring 1 is pulled to store force to enhance the clamping firmness. When the hammering is completed, start the motor, the drive shaft drives the gear to rotate, and through the engagement of the gear and the rack, the housing moves smoothly along the slide groove through the protrusion, driving the connecting frame, the electric push rod 1 and the clamp to move up together, realizing the automatic lifting of the casing.
[0018] S3. Then, connect it with the connecting pipe through the external conveying equipment, and send the sand into the filling hopper. The filling hopper is inclined, and the sand automatically slides onto the movable plate after entering. When the weight of the sand reaches the set value, the weight sensor transmits the signal to the electric push rod 2, and the electric push rod 2 is started. The electric push rod 2 drives the movable plate to flip, and the sand is filled into the casing through the discharge pipe. The double capstan pile driver is started, and the drop hammer repeatedly hammers the sand in the casing, pushing the soil and sinking the casing to the required depth, ensuring that the density of the sand pile is evenly controlled and the construction quality is guaranteed. When the height of the casing needs to be raised, the cylinder is started at the same time to raise the height of the filling hopper so that it can fill the sand quantitatively.
[0019] In summary, this application includes at least one of the following beneficial technical effects: 1. After the casing is installed in the pile hole, the electric push rod 1 is started to drive the clamp to clamp and fix the casing. At the same time, the spring 1 is pulled to store force to enhance the clamping firmness. When the hammering is completed, the motor is started, and the drive shaft drives the gear to rotate. Through the engagement of the gear and the rack, the housing moves smoothly along the slide groove through the protrusion, driving the connecting frame, the electric push rod 1 and the clamp to move upward together, realizing automatic lifting of the casing without manual operation, improving efficiency and ensuring structural stability and safety; 2. This application starts the double-capstan pile driver, causes the drop hammer to drop repeatedly, and operates the rope to release and retract, thereby drilling a pile hole at the determined pile position, and then installing the casing in the pile hole and connecting it to the connecting pipe through an external conveying device. Sand is fed into the filling hopper, which is inclined. After the sand enters, it automatically slides onto the movable plate. When the weight of the sand reaches the set value, the weight sensor transmits a signal to the electric push rod 2, which starts it and drives the movable plate to flip. The sand is filled into the casing through the discharge pipe, and then the double-capstan pile driver is started again, so that the drop hammer repeatedly hammers the sand in the casing, pushing the soil and sinking the casing to the required depth, so as to achieve uniform control of the density of the sand pile and ensure the construction quality. 3. When installing the casing, the present application aligns the through hole on the base plate with the pile hole position, then hammers the positioning nail into the ground through an external tool, and then inserts the extension bolt into the positioning nail. The connecting block is rotated to gradually screw the extension bolt out of the positioning nail. When the extension bolt is completely removed, the threaded cone nail is screwed into the ground, and its external threaded convex strip is used to enhance the fixing effect of the base plate, thereby improving the installation stability and construction efficiency of the height lifting equipment and the sand material control filling equipment, reducing errors and looseness problems, and improving the overall construction quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the overall structure of a compacted sand pile construction device according to an embodiment of the present application; Figure 2This is a schematic diagram of a casing height lifting structure of a compacted sand pile construction device according to an embodiment of the present application; Figure 3 This is a schematic diagram of the overall structure of sand material controlled filling of a compacted sand pile construction device according to an embodiment of the present application; Figure 4 This is a schematic diagram of the internal structure of a sand material controlled filling device for a compacted sand pile construction device according to an embodiment of the present application; Figure 5 yes Figure 1 Enlarged view of point A in the middle; Figure 6 yes Figure 2 Enlarged view of point B in the middle; Figure 7 yes Figure 4 Enlarged view of point C in the middle.
[0021] Explanation of the accompanying symbols: 1. Tripod pile driver; 2. Positioning plate; 3. Ground nail; 4. Crossbar; 5. Double winch pile driver; 6. Rope; 7. Pulley; 8. Drop hammer; 9. Casing; 10. Bottom plate; 11. Positioning nail; 12. Connecting block; 13. Extension bolt; 14. Threaded cone nail; 15. Support frame; 16. Rack; 17. Motor; 18. Housing; 19. Protrusion; 20. Slide; 21. Drive Drive shaft; 22. Gear; 23. Connecting frame; 24. Electric push rod 1; 25. Spring 1; 26. Clamp; 27. Cylinder; 28. Positioning pin; 29. Connecting seat; 30. Filling hopper; 31. Connecting pipe; 32. Discharge pipe; 33. Fixed plate; 34. Movable plate; 35. Hinge; 36. Weight sensor; 37. Rotating ball 1; 38. Electric push rod 2; 39. Rotating ball 2; 40. Spring 2. DETAILED DESCRIPTION
[0022] The following is combined with Figure 1 -Attached Figure 7 , further details of this application are given.
[0023] Reference Figure 1 、 Figure 2 and Figure 6A compacted sand pile construction device includes a tripod pile driver 1, a double winch pile driver 5 and a pulley 7. The pulley 7 is installed on the upper part of the tripod pile driver 1. The winches on both sides of the double winch pile driver 5 are wound with ropes 6. The ropes 6 are slidably connected to the inner side of the pulley 7. One end of the rope 6 is fixedly connected to a drop hammer 8. A casing 9 is installed in the drilled hole formed by the hammer 8 just below the drop hammer 8. The outer side of the casing 9 is slidably connected to a base plate 10, which is located on the ground. The upper part of the base plate 10 is fixedly connected to a lifting mechanism. The lifting mechanism includes a support frame 15, which is fixedly connected to the upper rear side of the base plate 10. The interior of the support frame 15 is fixedly connected to a rack 16. The outer side of the support frame 15 is slidably connected to a shell 18. The left side of the shell 18 is installed There is a motor 17, the output end of the motor 17 is fixedly connected to the drive shaft 21, the outside of the drive shaft 21 is fixedly connected to the gear 22, the gear 22 is meshed with the rack 16, the front side of the shell 18 is fixedly connected to the connecting frame 23, the left and right sides of the connecting frame 23 are fixedly connected to the clamping assembly, the clamping assembly is used to fasten and clamp the sleeve 9, the clamping assembly includes an electric push rod 24, the electric push rod 24 is fixedly connected to the left and right sides of the connecting frame 23, the electric push rod 24 is fixedly connected to the clamp 26 at one end, the outer sleeve of the electric push rod 24 is provided with a spring 25, the clamp 26 is clamped on the outside of the sleeve 9, the spring 25 is fixedly connected to one side of the connecting frame 23 at the far end, and the spring 25 is fixedly connected to one side of the clamp 26 at the close end; Slide grooves 20 are provided on the rear and right sides of the inner part of the support frame 15, and protrusions 19 are fixedly connected to the rear and right sides of the outer shell 18, and the protrusions 19 are slidably connected to the inside of the slide grooves 20; the drive shaft 21 is rotatably connected to the inside of the left and right sides of the outer shell 18, and the gear 22 is installed inside the outer shell 18; the bottom of the two right sides of the tripod pile driver 1 is fixedly connected to the cross bar 4, and the bottom of the left side of the tripod pile driver 1 is fixedly connected to the positioning plate 2, and the four internal corners of the positioning plate 2 are all engaged with the ground nails 3.
[0024] After the installation of the height lifting equipment and the sand material control filling equipment is completed, the sleeve 9 is installed in the pile hole, and then the electric push rod 24 is started, so that it drives the clamp 26 to clamp and fix the sleeve 9, and while the clamp 26 moves, the spring 25 is pulled to store force to generate rebound force, further ensuring the firmness of the clamping of the sleeve 9. When the hammering of one layer is completed, the motor 17 is started to drive the drive shaft 21 to rotate, so that the gear 22 is driven, and under the action of the meshing connection between the gear 22 and the rack 16, as the gear 22 rotates, the gear 22 is engaged with the rack 16. It moves outside the support frame 15 and slides inside the slide groove 20 under the action of the protrusions 19 connected on both sides of the shell 18, which effectively ensures the stability of the shell 18 when moving. When the shell 18 moves upward, it drives the connecting frame 23, which drives the electric push rod 24 and the clamp 26, so that the sleeve 9 is also driven upward. There is no need to manually raise the height of the sleeve 9, which realizes automatic lifting of the sleeve 9, avoids manual operation, reduces human errors, improves work efficiency, and maintains the stability and safety of the structure during movement.
[0025] refer to Figure 1 、 Figure 3 、 Figure 4 and Figure 7 The upper right side of the bottom plate 10 is fixedly connected to a cylinder 27, and the upper outer side of the cylinder 27 is rotatably connected to a connecting seat 29 through a positioning pin 28. The upper part of the connecting seat 29 is fixedly connected to a filling hopper 30, and the inner right side of the filling hopper 30 is fixedly connected to a connecting pipe 31, and the inner left side of the filling hopper 30 is fixedly connected to a discharge pipe 32. The front and rear sides of the discharge pipe 32 are fixedly connected to a fixing plate 33, and the upper and lower sides of the inner wall of the discharge pipe 32 are fixedly connected to hinges 35, and one side of the hinge 35 is fixed. A movable plate 34 is connected, and a rotating bead 2 39 is rotatably connected to the left inner portion of the movable plate 34. One side of the rotating bead 2 39 is fixedly connected to an electric push rod 2 38. A rotating bead 1 37 is fixedly connected to the far end of the electric push rod 2 38. The rotating bead 1 37 is rotatably connected to the upper and lower inner portions of the discharge pipe 32. A spring 2 40 is sleeved on the outer portion of the electric push rod 2 38. One end of the spring 2 40 is fixedly connected to the left side of the movable plate 34, and the other end of the spring 2 40 is fixedly connected to the upper and lower inner walls of the discharge pipe 32. A weight sensor 36 is fixedly connected to the left side of the movable plate 34 . The movable plate 34 is rotatably connected to the inside of the discharge pipe 32 . The movable plate 34 is located at the connection between the discharge pipe 32 and the filling hopper 30 .
[0026] By starting the double winch pile driver 5 and repeatedly releasing and retracting the rope 6, the drop hammer 8 is repeatedly dropped and freely falls into the soft soil to drill a hole. A hole is drilled at a determined pile position to form a pile hole. Then, the casing 9 is installed in the pile hole. After that, the sand is fed into the filling hopper 30 after being connected to the connecting pipe 31 through an external conveying device. The filling hopper 30 is tilted so that when the sand enters the filling hopper 30, it automatically slides onto the movable plate 34. When the weight of the sand reaches the set weight, the weight sensor 36 senses the weight and transmits a signal. The electric push rod 2 38 is powered to start the electric push rod 2 38, so that the movable plate 34 is pulled by the action of the hinge 35 through the driving of the rotating bead 2 39, so that it is turned over. As the movable plate 34 rotates, the rotating bead 2 39 rotates inside the movable plate 34, and at the same time, the rotating bead 1 37 rotates in the discharge pipe 32 and compresses the spring 2 40 to store force and generate a rebound force. When the movable plate 34 is opened, the specified sand material is filled into the sleeve 9 through the discharge pipe 32 and falls into the bottom end thereof. Then the double winch pile driver 5 is started again to make the drop hammer 8 hit the sand in the sleeve 9. The material is hammered repeatedly so that the soil below the casing 9 will be pushed, and the casing 9 is driven by its own weight until it reaches the required depth. After reaching the required depth, pour about 10 of water and crush the sand plug by hammering and punching to form a sand cone at the bottom of the casing 9. Then, the drop hammer 8 is removed from the inside of the casing 9, and the same operation is repeated many times to fill the sand into the casing 9. The thickness of the sand in the casing 9 is not less than 750 mm. Then, the casing 9 is lifted from the bottom position by about 750 mm, and the drop hammer 8 is controlled to fall freely in the casing 9. The filled sand material is compacted, and each layer is hammered 5 to 7 times by the drop hammer 8, and the height of each hammering is at least 1 meter. When the compaction work is completed, the sand filling, casing 9 withdrawal and compaction operations are repeated, and the number of hammering is kept at 5-7 times, and the height of each hammering is at least 1 meter, until the top of the compacted sand pile reaches 1-1.5 meters below the ground, thereby achieving precise control of the filling amount of the sand material, so that when the compacted sand pile is hammered and formed in layers, the density of each layer of the sand pile is guaranteed to be the same, and the overall density of the compacted sand pile is ensured to be in a uniform state, which will not affect the construction quality.
[0027] refer to Figure 1 and Figure 5 The four internal corners of the base plate 10 are all engaged with positioning pins 11, the internal threads of the positioning pins 11 are connected to the lengthened bolts 13, the top of the lengthened bolts 13 are fixedly connected to the connecting block 12, and the bottom of the lengthened bolts 13 are fixedly connected to the threaded cone pin 14.
[0028] When installing and positioning the casing 9, the through hole on the base plate 10 is aligned with the drilled pile hole position, and then the positioning nail 11 is hammered into the ground through an external tool, and then the lengthened bolt 13 is inserted into the positioning nail 11, and then the connecting block 12 is rotated to gradually screw it out of the positioning nail 11. When the lengthened bolt 13 is completely moved out of the positioning nail 11, the threaded cone nail 14 is screwed into the ground, and the threaded ridges on the outside of the threaded cone nail 14 are passed under the threaded ridges, thereby increasing the firmness of the installation of the base plate 10, achieving the stability and firmness of the installation of the height lifting equipment and the sand material control filling equipment, improving the construction efficiency and structural stability, reducing errors and looseness problems during the construction process, and thus improving the overall construction quality.
[0029] refer to Figure 1-Figure 7 A compacted sand pile construction method comprises the following steps: First, after determining the pile position, the double-winch pile driver 5 is activated, causing the drop hammer 8 to repeatedly drop and retract the rope 6 to drill and form the pile hole. When installing the casing 9, the through-hole on the base plate 10 is aligned with the pile hole position. Using an external tool, a positioning nail 11 is hammered into the ground. An extension bolt 13 is inserted into the positioning nail 11. The connecting block 12 is rotated to gradually unscrew the extension bolt 13 from the positioning nail 11. Once the extension bolt 13 is completely removed, the threaded cone nail 14 is screwed into the ground. The external threaded ridges of the cone nail 14 enhance the fixing effect of the base plate 10, improving installation stability and construction efficiency, reducing errors and looseness, and improving overall construction quality.
[0030] S2. Secondly, the sleeve 9 is installed in the pile hole, and the electric push rod 24 is started to drive the clamp 26 to clamp and fix the sleeve 9. At the same time, the spring 25 is pulled to store force to enhance the clamping firmness. When the hammering is completed, the motor 17 is started, and the drive shaft 21 drives the gear 22 to rotate. Through the engagement of the gear 22 and the rack 16, the housing 18 moves smoothly along the slide groove 20 through the protrusion 19, driving the connecting frame 23, the electric push rod 24 and the clamp 26 to move up together, realizing the automatic lifting of the sleeve 9.
[0031] S3. Then, the sand is sent into the filling hopper 30 through the external conveying equipment and the connecting pipe 31. The filling hopper 30 is inclined. After the sand enters, it automatically slides onto the movable plate 34. When the weight of the sand reaches the set value, the weight sensor 36 transmits a signal to the electric push rod 2 38, and the electric push rod 2 38 is started. The electric push rod 2 38 drives the movable plate 34 to flip, and the sand is filled into the casing 9 through the discharge pipe 32. The double capstan pile driver 5 is started, and the drop hammer 8 repeatedly hammers the sand in the casing 9, pushing the soil and sinking the casing 9 to the required depth, ensuring that the density of the sand pile is evenly controlled and the construction quality is guaranteed. When the height of the casing 9 needs to be raised, the cylinder 27 is started at the same time to raise the height of the filling hopper 30 so that it can quantitatively fill the sand.
[0032] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.
Claims
1. A compacted sand pile construction device, comprising a tripod pile driver (1), a double winch pile driver (5) and a pulley (7), characterized in that: The pulley (7) is installed on the upper part of the tripod pile driver (1), and ropes (6) are wound around the outside of the winches on both sides of the double winch pile driver (5). The ropes (6) are slidably connected to the inner side of the pulley (7). One end of the rope (6) is fixedly connected to a drop hammer (8). A casing (9) is installed in a drilled hole formed by hammering the drop hammer (8) directly below the drop hammer (8). The outer part of the casing (9) is slidably connected to a bottom plate (10) located on the ground. The upper part of the bottom plate (10) is fixedly connected to a lifting mechanism. The lifting mechanism includes a support frame (15), the support frame (15) is fixedly connected to the upper rear side of the bottom plate (10), the interior of the support frame (15) is fixedly connected to a rack (16), the outer part of the support frame (15) is slidably connected to a shell (18), and the shell A motor (17) is installed on the left side of (18), and the output end of the motor (17) is fixedly connected to a drive shaft (21), and the outside of the drive shaft (21) is fixedly connected to a gear (22), and the gear (22) is meshed with the rack (16). The front side of the housing (18) is fixedly connected to a connecting frame (23), and the left and right sides of the connecting frame (23) are fixedly connected to a clamping assembly, and the clamping assembly is used to fasten and clamp the sleeve (9). The clamping assembly includes an electric push rod (24), and the electric push rod (24) is fixedly connected to the left and right sides of the connecting frame (23). The electric push rod (24) is fixedly connected to a clamp (26) near one end, and the outer sleeve of the electric push rod (24) is provided with a spring (25), and the clamp (26) is clamped on the outside of the sleeve (9).
2. A compacted sand pile construction device according to claim 1, characterized in that: The right side of the upper portion of the bottom plate (10) is fixedly connected to a cylinder (27), the outer side of the upper portion of the cylinder (27) is rotatably connected to a connecting seat (29) via a positioning pin (28), the upper portion of the connecting seat (29) is fixedly connected to a filling hopper (30), the right side of the interior of the filling hopper (30) is fixedly connected to a connecting pipe (31), the left side of the interior of the filling hopper (30) is fixedly connected to a discharge pipe (32), the front and rear sides of the interior of the discharge pipe (32) are fixedly connected to fixed plates (33), the interior of the discharge pipe (32) is fixedly connected to a connecting pipe (31), and the left side of the interior of the discharge pipe (32) is fixedly connected to a connecting pipe (31). The upper and lower sides of the wall are fixedly connected with hinges (35), one side of the hinge (35) is fixedly connected with a movable plate (34), the left side of the movable plate (34) is rotatably connected with a rotating bead 2 (39), one side of the rotating bead 2 (39) is fixedly connected with an electric push rod 2 (38), the electric push rod 2 (38) is fixedly connected with a rotating bead 1 (37) at one end away from the other, the rotating bead 1 (37) is rotatably connected to the upper and lower sides of the discharge pipe (32), and the outer sleeve of the electric push rod 2 (38) is provided with a spring 2 (40).
3. A compacted sand pile construction device according to claim 1, characterized in that: The four inner corners of the bottom plate (10) are all snap-connected with positioning pins (11), the inner threads of the positioning pins (11) are connected to lengthened bolts (13), the tops of the lengthened bolts (13) are fixedly connected to connecting blocks (12), and the bottoms of the lengthened bolts (13) are fixedly connected to threaded cone pins (14).
4. A compacted sand pile construction device according to claim 1, characterized in that: The end of the spring one (25) that is farther away is fixedly connected to one side of the connecting frame (23), and the end of the spring one (25) that is closer to one side is fixedly connected to one side of the clamp (26).
5. The compacted sand pile construction device according to claim 2, characterized in that: A weight sensor (36) is fixedly connected to the left side of the movable plate (34), and the movable plate (34) is rotatably connected to the inside of the discharge pipe (32). The movable plate (34) is located at the connection between the discharge pipe (32) and the filling hopper (30).
6. A compacted sand pile construction device according to claim 2, characterized in that: One end of the second spring (40) is fixedly connected to the left side of the movable plate (34), and the other end of the second spring (40) is fixedly connected to the upper and lower inner walls of the discharge pipe (32).
7. The compacted sand pile construction device according to claim 1, characterized in that: The inner rear side and right side of the support frame (15) are provided with a slide groove (20), and the rear side and right side of the shell (18) are fixedly connected with a protrusion (19), and the protrusion (19) is slidably connected to the inside of the slide groove (20).
8. The compacted sand pile construction device according to claim 1, characterized in that: The drive shaft (21) is rotatably connected to the inside of the left and right sides of the housing (18), and the gear (22) is installed inside the housing (18).
9. The compacted sand pile construction device according to claim 1, characterized in that: The bottoms of the two right brackets of the tripod pile driver (1) are fixedly connected to a crossbar (4), the bottom of the left side of the tripod pile driver (1) is fixedly connected to a positioning plate (2), and the four inner corners of the positioning plate (2) are all engaged with ground nails (3).
10. A compacted sand pile construction method, according to a compacted sand pile construction device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. First, after determining the pile position, start the double winch pile driver (5), make the drop hammer (8) fall repeatedly, and release and retract the rope (6) to drill a hole to form a pile hole. When installing the casing (9), align the through hole on the base plate (10) with the pile hole position. Use an external tool to hammer the positioning nail (11) into the ground, insert the extension bolt (13) into the positioning nail (11), rotate the connecting block (12) to gradually screw the extension bolt (13) out of the positioning nail (11), and when the extension bolt (13) is completely removed, screw the threaded cone nail (14) into the ground, and use its external threaded convex strip to enhance the fixing effect of the base plate (10), thereby improving the stability of the installation and the construction efficiency, reducing errors and looseness problems, and improving the overall construction quality; S2. Next, the casing (9) is installed in the pile hole, and the electric push rod (24) is started to drive the clamp (26) to clamp and fix the casing (9). At the same time, the spring (25) is pulled to store force to enhance the clamping firmness. When the hammering is completed, the motor (17) is started, and the drive shaft (21) drives the gear (22) to rotate. Through the engagement of the gear (22) and the rack (16), the housing (18) moves smoothly along the slide groove (20) through the protrusion (17), driving the connecting frame (23), the electric push rod (24) and the clamp (26) to move upward together, thereby realizing the automatic lifting of the casing (9); S3. Then, the sand material is fed into the filling hopper (30) by connecting it to the connecting pipe (31) through the external conveying equipment. The filling hopper (30) is tilted. After the sand material enters, it automatically slides onto the movable plate (34). When the weight of the sand material reaches the set value, the weight sensor (36) transmits a signal to the electric push rod 2 (38), and the electric push rod 2 (38) is started. The electric push rod 2 (38) drives the movable plate (34) to flip, and the sand material is filled into the casing (9) through the discharge pipe (32). The double winch pile driver (5) is started, and the drop hammer (8) repeatedly hammers the sand material in the casing (9), pushing the soil and sinking the casing (9) to the required depth, ensuring that the density of the sand pile is evenly controlled and the construction quality is guaranteed. When the height of the casing (9) needs to be raised, the cylinder (27) is started at the same time to raise the height of the filling hopper (30) so that the sand material is quantitatively filled.