A gunite mixing pile construction equipment

Abstract

This invention relates to the field of civil engineering construction technology, and in particular to a shotcrete mixing pile construction device. The device includes an installation plate, on which is mounted a rotatable second mixing shaft and a first mixing shaft that can rotate at varying speeds to match the second mixing shaft. Both the first and second mixing shafts are equipped with a plurality of staggered mixing blades, and the mixing blades on the first mixing shaft can reciprocate up-and-down shearing motion while simultaneously rotating. A drill bit is mounted at the lower end of both the first and second mixing shafts, and a grouting port is located above the drill bit. A grouting pipe, which controls the grouting flow rate and is connected to the grouting port, is mounted on the installation plate. This effectively solves the problem in the prior art where hard soil layers may not be thoroughly cut, while soft soil layers are prone to over-mixing and insufficient local shearing force, resulting in the grout only coating the surface of the soil mass.

Description

Technical Field

[0001] This invention relates to the field of civil engineering construction technology, and in particular to a shotcrete mixing pile construction equipment. Background Technology

[0002] Slurry mixing pile technology, as a core technology in soft soil foundation treatment, foundation pit support, and anti-seepage curtain construction, is widely used in highway, railway, municipal engineering, and water conservancy projects due to its advantages such as minimal soil disturbance, high construction efficiency, and controllable cost. Among them, dual-axis slurry mixing pile equipment, with its feature of simultaneous operation of two mixing shafts, can effectively expand the construction width and improve pile formation efficiency compared to single-axis equipment, making it the mainstream choice for large-area soft soil foundation treatment projects.

[0003] However, existing dual-axis shotcrete mixing pile equipment still has shortcomings:

[0004] 1. Hard soil layers may not be completely cut, while soft soil layers are prone to particle agglomeration due to "over-mixing", both of which affect the subsequent slurry fusion.

[0005] 2. The mixing blades rely solely on the main rotation for mixing, resulting in insufficient local shearing force on the soil clumps. This can easily lead to the grout only coating the surface of the soil clumps, while "dry soil cores" that are not mixed with the grout form inside, severely affecting the uniformity of the pile body. Summary of the Invention

[0006] In view of the above situation and to overcome the defects of the prior art, the present invention provides a shotcrete mixing pile construction equipment that effectively solves the problems in the prior art where hard soil layers may not be completely cut, and soft soil layers are prone to soil particle agglomeration due to excessive mixing, both of which affect the subsequent grout fusion. In addition, the mixing blades rely only on the main rotation for mixing, resulting in insufficient local shearing force on the soil clumps. This can easily lead to the grout only coating the surface of the soil clumps, while dry soil cores that are not mixed with the grout are formed inside, which seriously affects the uniformity of the pile body.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A shotcrete mixing pile construction device includes an installation plate. The installation plate is equipped with a second rotatable mixing shaft and a first mixing shaft that can rotate at a variable speed to match the rotation speed of the second mixing shaft. Both the first and second mixing shafts are equipped with a plurality of staggered mixing blades. The mixing blades on the first mixing shaft can reciprocate up and down shearing motion while rotating on their own axis. Both the first and second mixing shafts are equipped with drill bits at their lower ends. A grouting port is provided above the drill bit. The installation plate is equipped with a grouting pipe that can control the grouting flow rate and is connected to the grouting port.

[0009] Preferably, a plurality of mounting shafts are equidistantly arranged at the lower end of the first stirring shaft, and the mounting shafts are integrally arranged through mounting rings. The stirring blades are mounted at both ends of the mounting shafts, and the stirring shafts are provided with splines corresponding to the mounting shafts.

[0010] Preferably, a cam is fixedly connected to the lower end of the second stirring shaft, and a rotating cylinder rotatably connected to the upper end of the cam is provided. A first inner groove column is rotatably connected to the lower end of the first stirring shaft. A rectangular slide is slidably connected to the first inner groove column. A limiting pin is installed on the inner side of the rectangular slide and slidably connected to a groove opened on the first inner groove column. A pressing wheel corresponding to the cam is rotatably connected to one end of the rectangular slide. A second inner groove column is fixedly connected to the mounting shaft at the lower end of the first inner groove column. A connecting rod is rotatably connected to the rectangular slide, and a pin housed in the second inner groove column is provided at the lower end of the connecting rod.

[0011] Preferably, a fixing plate is slidably provided on one end wall of the mounting shaft and fixedly connected to the first stirring shaft. A rack is installed on both ends of the fixing plate, and a gear is provided on both ends of the mounting shaft and fixedly connected to the stirring blade on the same axis. The gear meshes with the rack.

[0012] Preferably, a fixing block is fixedly connected to the upper end of the rectangular slide, a spring is installed between the rotating cylinder and the fixing block, a slide is fixedly connected to one end of the rotating cylinder, a slide rod is installed at one end of the fixing block and slidably connected to the inner wall of the slide, and the spring is sleeved on the slide and the slide rod.

[0013] Preferably, a motor is mounted on the mounting plate, and a driving bevel gear is fixedly connected to the output shaft of the motor. The driving bevel gear meshes with a driven bevel gear, and the driven bevel gear is fixedly mounted on a second stirring shaft. A second elliptical gear is fixedly mounted on the upper end of the second stirring shaft, and a first elliptical gear that meshes with the second elliptical gear is fixedly mounted on the upper end of the first stirring shaft.

[0014] Preferably, the upper ends of the first and second stirring shafts are both equipped with rotary sealing joints, which are connected by an installation pipe. The rotary sealing joints are also equipped with flow control valves adapted to the installation pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: Attached Figure Description

[0016] Figure 1 This is a modeling diagram of a shotcrete mixing pile construction device according to the present invention;

[0017] Figure 2 This is an isometric view of a shotcrete mixing pile construction device according to the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of a cam in a shotcrete mixing pile construction device according to the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the first inner trench column of a shotcrete mixing pile construction device according to the present invention;

[0020] Figure 5 This is a schematic diagram of the installation rotating ring of a shotcrete mixing pile construction device according to the present invention;

[0021] Figure 6 This is a schematic diagram of the installation shaft of a shotcrete mixing pile construction device according to the present invention;

[0022] Figure 7 This is a schematic diagram of the structure of the fixing plate of a shotcrete mixing pile construction device according to the present invention;

[0023] Figure 8 This is a schematic diagram of the structure of the fixing block of a shotcrete mixing pile construction device according to the present invention;

[0024] Figure 9 This is a schematic diagram of the structure of the first and second elliptical gears of a shotcrete mixing pile construction device according to the present invention.

[0025] Figure 10 This is a schematic diagram of the grouting pipe of a shotcrete mixing pile construction device according to the present invention;

[0026] Figure 11 This is a schematic diagram of the rectangular slide frame of a shotcrete mixing pile construction device according to the present invention;

[0027] In the diagram: 1. Mounting plate, 2. First stirring shaft, 3. Second stirring shaft, 4. Motor, 5. Driving bevel gear, 6. Driven bevel gear, 7. Mounting pipe, 8. Flow control valve, 9. Rotary sealing joint, 10. Cam, 11. Stirring blade, 12. Mounting ring, 13. Mounting shaft, 14. Drill bit, 15. Grouting port, 16. Rectangular slide, 17. Connecting rod, 18. Rotary cylinder, 19. Spring, 20. Fixing block, 21. First inner groove column, 22. Second inner groove column, 23. Pin, 24. Extrusion wheel, 25. Fixing plate, 26. Rack, 27. Gear, 28. Second elliptical gear, 29. First elliptical gear, 30. Grouting pipe, 31. Limiting pin, 32. Slide cylinder, 33. Slide rod. Detailed Implementation

[0028] like Figure 1-11As shown, a shotcrete mixing pile construction device includes an installation plate 1. The installation plate 1 is equipped with a second mixing shaft 3 that can be driven to rotate and a first mixing shaft 2 that can rotate at a speed adapted to the rotation speed of the second mixing shaft 3. Both the first mixing shaft 2 and the second mixing shaft 3 are equipped with a plurality of staggered mixing blades 11. The mixing blades 11 on the first mixing shaft 2 can rotate while reciprocating up and down shearing motion. Both the first mixing shaft 2 and the second mixing shaft 3 are equipped with drill bits 14 at their lower ends. A grouting port 15 is provided above the drill bit 14. The installation plate 1 is equipped with a grouting pipe 30 that can control the grouting flow rate and communicates with the grouting port 15.

[0029] In use, this invention controls the rotation of the second stirring shaft 3, which in turn drives the first stirring shaft 2 to rotate intermittently at varying speeds. The rotational speed of the first stirring shaft 2 dynamically changes with the rotational cycle of the second stirring shaft 3, allowing the second stirring shaft 3 to adapt to the rotational speed of the first stirring shaft 2. The speed-changing characteristics brought by the transmission of the first elliptical gear 29 and the second elliptical gear 28 allow the first and second stirring shafts 2 and 3 to dynamically adjust their rotational speeds according to the hardness of the soil layer. For example, in hard soil layers, the rotational speed is reduced to increase torque, while in soft soil layers, the rotational speed is increased to break up the soil. This avoids the problem of insufficient cutting or excessive shearing of traditional uniform-speed shafts in complex strata, improving soil breaking efficiency. The second stirring shaft 3 drives the uniformly arranged stirring blades 11 at its lower end to rotate, while simultaneously, the stirring blades 11 on the first stirring shaft 2 are crosswise arranged on the second stirring shaft. Between the mixing blades 11 of the first mixing shaft 2, the mixing blades 11 on the first mixing shaft 2 can rotate while reciprocating up and down shearing motion, breaking the limitation of the traditional mixing blades 11 rotating only horizontally. Up and down shearing can expand the mixing range, eliminate the lateral blind zone between the two shafts and the longitudinal interlayer interface of the pile body, and avoid layered mixing. In addition, the rotation can perform secondary shearing on the soil clump, tearing up the cohesive soil clump, destroying the sand grain interlocking structure, preventing the formation of dry soil cores, and improving the uniformity of soil mixing. The lower ends of the first mixing shaft 2 and the second mixing shaft 3 are both equipped with drill bits 14. The drill bits 14 are used in conjunction with the mixing blades 11 to start the mixing hole on the ground. After the mixing pile is opened, the grout is distributed to the grouting pipes 30 inside the first mixing shaft 2 and the second mixing shaft 3. Finally, it is sprayed into the mixing area from the grouting port 15 above the drill bit 14 and mixed with the soil broken by the mixing blades 11.

[0030] A plurality of mounting shafts 13 are equidistantly arranged at the lower end of the first stirring shaft 2. The mounting shafts 13 are integrally connected to each other via mounting rings 12. The stirring blades 11 are mounted at both ends of the mounting shafts 13, and the stirring shafts are provided with splines corresponding to the mounting shafts 13. A cam 10 is fixedly connected to the lower end of the second stirring shaft 3. A rotating cylinder 18 rotatably connected to the upper end of the cam 10 is provided with the upper end of the cam 10. A first inner groove column 21 is rotatably connected to the lower end of the first stirring shaft 2. A rectangular slide 16 is slidably connected to the first inner groove column 21. A limiting pin 31 is installed on the inner side of the rectangular slide 16 and slidably connected to the groove opened on the first inner groove column 21. A pressing wheel 24 corresponding to the cam 10 is rotatably connected to one end of the rectangular slide 16. A mounting shaft 13 is provided at the lower end of the first inner groove column 21. The second inner groove column 22 is fixedly connected. A connecting rod 17 is rotatably connected to the rectangular slide 16. A pin 23 is provided at the lower end of the connecting rod 17 and housed in the second inner groove column 22. A fixing plate 25 is slidably provided on one end wall of the mounting shaft 13 and fixedly connected to the first stirring shaft 2. A rack 26 is installed at both ends of the fixing plate 25. A gear 27 is provided at both ends of the mounting shaft 13 and fixedly connected to the stirring blade 11 on the same axis. The gear 27 meshes with the rack 26. A fixing block 20 is fixedly connected to the upper end of the rectangular slide 16. A spring 19 is installed between the rotating cylinder 18 and the fixing block 20. A slide cylinder 32 is fixedly connected to one end of the rotating cylinder 18. A slide rod 33 is installed at one end of the fixing block 20 and slidably connected to the inner wall of the slide cylinder 32. The spring 19 is sleeved on the slide cylinder 32 and the slide rod 33.

[0031] like Figure 2-7 As shown in Figures 10 and 11, when the second stirring shaft 3 rotates, the cam 10 fixedly connected to its lower end rotates synchronously. The cam 10 contacts the extrusion wheel 24 rotatably connected to one end of the rectangular slide 16. The eccentric structure of the cam 10 will generate a periodic thrust on the extrusion wheel 24. The rectangular slide 16 is slidably connected to the groove of the first inner groove column 21 through the limiting sliding pin 31. Under the thrust of the cam 10, the rectangular slide 16 slides horizontally back and forth along the groove of the first inner groove column 21. The connecting rod 17 rotatably connected to the rectangular slide 16 moves left and right with the rectangular slide 16. The pin 23 at the lower end of the connecting rod 17 is set in the second inner groove column 22 and does not affect the rotation of the second inner groove column 22. By changing the left and right deflection distance of the connecting rod 17, since the pin 23 is housed in the second inner groove column 22, the connecting rod 17 can drive the second inner groove column 22 to move up and down back and forth when the distance changes.

[0032] The second inner groove column 22 is fixedly connected to the mounting shaft 13 of the first stirring shaft 2. The mounting shaft 13 moves back and forth up and down with the second inner groove column 22. The stirring blades 11 installed at both ends of the mounting shaft 13 move back and forth up and down with the mounting shaft 13. Since the first stirring shaft 2 is provided with a spline corresponding to the mounting shaft 13, the first stirring shaft 2 can drive the mounting shaft 13 to rotate without affecting the up and down sliding of the mounting shaft 13.

[0033] Meanwhile, the rotating drum 18 is rotatably connected to the second stirring shaft 3. The spring 19 between the rotating drum 18 and the upper fixed block 20 of the rectangular slide 16 is sleeved on the slide 32 and the slide rod 33. The elastic force of the spring 19 can buffer the impact force of the cam 10 on the rectangular slide 16, ensuring that the rectangular slide 16 moves smoothly, and can also play a role in resetting the rectangular slide 16.

[0034] A fixed plate 25 is fixedly connected to the first stirring shaft 2. A straight rack 26 is installed at both ends of the fixed plate 25. One end wall of the mounting shaft 13 is slidably connected to the fixed plate 25. The gears 27 at both ends of the mounting shaft 13 mesh with the straight rack 26.

[0035] When the mounting shaft 13 moves up and down with the second inner groove column 22, the gear 27 slides along the rack 26. Since the rack 26 is fixed, the gear 27 rotates. The gear 27 is coaxially and fixedly connected with the stirring blade 11, and the gear 27 drives the stirring blade 11 to rotate synchronously.

[0036] The mixing blade 11 rotates while reciprocating up and down shearing, breaking the limitation of the traditional mixing blade 11 which only rotates horizontally. Up and down shearing can expand the mixing range, eliminate the lateral blind zone between the two axes and the longitudinal interlayer interface of the pile body, and avoid layered mixing. In addition, the rotation can perform secondary shearing on the soil clump, tearing up the cohesive soil clump, destroying the sand grain interlocking structure, preventing the formation of dry soil cores, and improving the uniformity of soil mixing.

[0037] A motor 4 is mounted on the mounting plate 1. The output shaft of the motor 4 is fixedly connected to a driving bevel gear 5. The driving bevel gear 5 meshes with a driven bevel gear 6. The driven bevel gear 6 is fixedly mounted on a second stirring shaft 3. A second elliptical gear 28 is fixedly mounted on the upper end of the second stirring shaft 3. A first elliptical gear 29 that meshes with the second elliptical gear 28 is fixedly mounted on the upper end of the first stirring shaft 2.

[0038] like Figure 1 and 8As shown, when the motor 4 on the mounting plate 1 is started, the output shaft of the motor 4 drives the fixedly connected driving bevel gear 5 to rotate. The driving bevel gear 5 meshes with the driven bevel gear 6 fixedly mounted on the second stirring shaft 3, transmitting power to the second stirring shaft 3 and driving it to rotate. The second elliptical gear 28 fixed at the upper end of the second stirring shaft 3 rotates synchronously. Since the second elliptical gear 28 meshes with the first elliptical gear 29 fixed at the upper end of the first stirring shaft 2, the second elliptical gear 28 drives the first elliptical gear 29 to rotate, thereby driving the first stirring shaft 2 to rotate. The tooth pitch of gear 8 changes periodically with the profile of gear 27. During the meshing transmission, the rotational speed of the first stirring shaft 2 will dynamically change with the rotational period of the second stirring shaft 3, so that the second stirring shaft 3 can adapt to the rotational speed of the first stirring shaft 2 for variable speed rotation. The variable speed characteristics brought by the transmission of the first elliptical gear 29 and the second elliptical gear 28 can allow the first stirring shaft 2 and the second stirring shaft 3 to dynamically adjust their rotational speed according to the hardness of the stratum. For example, the rotational speed can be reduced in hard soil areas to increase torque, and the rotational speed can be increased in soft soil areas to break up the soil. This avoids the problem of insufficient cutting or excessive shearing of traditional uniform speed shafts in complex strata and improves the soil breaking efficiency.

[0039] The upper ends of the first stirring shaft 2 and the second stirring shaft 3 are both equipped with rotary sealing joints 9, which are connected by an installation pipe 7. The rotary sealing joints 9 are also equipped with flow control valves 8 that are compatible with the installation pipe 7.

[0040] like Figure 1 and 9 As shown, rotary sealing joints 9 are installed at the upper ends of the first mixing shaft 2 and the second mixing shaft 3. The rotary sealing joints 9 are connected by an installation pipe 7 to ensure that the grouting channel does not leak when the dual shafts rotate. The flow control valve 8 on the rotary sealing joint 9 can adjust the grouting flow according to construction requirements, such as the permeability of the stratum and the design strength of the pile. The grouting pipe 30 is connected to the grouting port 15 to deliver the grout to the rotary sealing joint 9. The grout is then distributed to the grouting pipes 30 inside the first mixing shaft 2 and the second mixing shaft 3 through the installation pipe 7. Finally, the grout is sprayed into the mixing area from the grouting port 15 above the drill bit 14 and mixed with the soil broken by the mixing blade 11.

[0041] The working process of this invention is as follows: The motor 4 on the mounting plate 1 is started. The output shaft of the motor 4 drives the fixedly connected driving bevel gear 5 to rotate. The driving bevel gear 5 meshes with the driven bevel gear 6 fixedly mounted on the second stirring shaft 3, transmitting power to the second stirring shaft 3 and driving it to rotate. The second elliptical gear 28 fixed at the upper end of the second stirring shaft 3 rotates synchronously. Since the second elliptical gear 28 meshes with the first elliptical gear 29 fixed at the upper end of the first stirring shaft 2, the second elliptical gear 28 drives the first elliptical gear 29 to rotate, thereby driving the first stirring shaft 2 to rotate. The pitch of the spur gear 28 changes periodically with the profile of the gear 27. During the meshing transmission, the rotational speed of the first stirring shaft 2 will dynamically change with the rotational period of the second stirring shaft 3, so that the second stirring shaft 3 can adapt to the rotational speed of the first stirring shaft 2 for variable speed rotation. The variable speed characteristics brought by the transmission of the first elliptical gear 29 and the second elliptical gear 28 allow the first stirring shaft 2 and the second stirring shaft 3 to dynamically adjust their rotational speed according to the hardness of the stratum. For example, the rotational speed can be reduced in hard soil areas to increase torque, and the rotational speed can be increased in soft soil areas to break up the soil. This avoids the problem of insufficient cutting or excessive shearing of traditional uniform speed shafts in complex strata and improves the soil breaking efficiency.

[0042] When the second stirring shaft 3 rotates, the cam 10 fixedly connected to its lower end rotates synchronously. The cam 10 contacts the extrusion wheel 24 rotatably connected to one end of the rectangular slide 16. The eccentric structure of the cam 10 will generate a periodic thrust on the extrusion wheel 24. The rectangular slide 16 is slidably connected to the groove of the first inner groove column 21 through the limiting sliding pin 31. Under the thrust of the cam 10, the rectangular slide 16 slides horizontally back and forth along the groove of the first inner groove column 21. The connecting rod 17 rotatably connected to the rectangular slide 16 moves left and right with the rectangular slide 16. The pin 23 at the lower end of the connecting rod 17 is set in the second inner groove column 22 and does not affect the rotation of the second inner groove column 22. By changing the left and right deflection distance of the connecting rod 17, since the pin 23 is housed in the second inner groove column 22, the connecting rod 17 can drive the second inner groove column 22 to move up and down back and forth when the distance changes.

[0043] The second inner groove column 22 is fixedly connected to the mounting shaft 13 of the first stirring shaft 2. The mounting shaft 13 moves back and forth up and down with the second inner groove column 22. The stirring blades 11 installed at both ends of the mounting shaft 13 move back and forth up and down with the mounting shaft 13. Since the first stirring shaft 2 is provided with a spline corresponding to the mounting shaft 13, the first stirring shaft 2 can drive the mounting shaft 13 to rotate without affecting the up and down sliding of the mounting shaft 13.

[0044] Meanwhile, the rotating drum 18 is rotatably connected to the second stirring shaft 3. The spring 19 between the rotating drum 18 and the upper fixed block 20 of the rectangular slide 16 is sleeved on the slide 32 and the slide rod 33. The elastic force of the spring 19 can buffer the impact force of the cam 10 on the rectangular slide 16, ensuring that the rectangular slide 16 moves smoothly, and can also play a role in resetting the rectangular slide 16.

[0045] A fixed plate 25 is fixedly connected to the first stirring shaft 2. A straight rack 26 is installed at both ends of the fixed plate 25. One end wall of the mounting shaft 13 is slidably connected to the fixed plate 25. The gears 27 at both ends of the mounting shaft 13 mesh with the straight rack 26.

[0046] When the mounting shaft 13 moves up and down with the second inner groove column 22, the gear 27 slides along the rack 26. Since the rack 26 is fixed, the gear 27 rotates. The gear 27 is coaxially and fixedly connected with the stirring blade 11, and the gear 27 drives the stirring blade 11 to rotate synchronously.

[0047] The mixing blade 11 rotates while reciprocating up and down shearing, breaking the limitation of the traditional mixing blade 11 which only rotates horizontally. Up and down shearing can expand the mixing range, eliminate the lateral blind zone between the two axes and the longitudinal interlayer interface of the pile body, and avoid layered mixing. In addition, the rotation can perform secondary shearing on the soil clump, tearing up the cohesive soil clump, destroying the sand grain interlocking structure, preventing the formation of dry soil cores, and improving the uniformity of soil mixing.

[0048] Rotary sealing joints 9 are installed at the upper ends of the first mixing shaft 2 and the second mixing shaft 3. The rotary sealing joints 9 are connected by an installation pipe 7 to ensure that the grouting channel does not leak when the dual shafts rotate. The flow control valve 8 on the rotary sealing joint 9 can adjust the grouting flow according to construction requirements, such as the permeability of the stratum and the design strength of the pile. The grouting pipe 30 is connected to the grouting port 15 to deliver the grout to the rotary sealing joint 9. The grout is then distributed to the grouting pipes 30 inside the first mixing shaft 2 and the second mixing shaft 3 through the installation pipe 7. Finally, the grout is sprayed into the mixing area from the grouting port 15 above the drill bit 14 and mixed with the soil broken by the mixing blade 11.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shotcrete mixing pile construction device, comprising an installation plate (1), characterized in that: The mounting plate (1) is provided with a rotatable second stirring shaft (3) and a first stirring shaft (2) that can rotate at a speed adapted to the rotation speed of the second stirring shaft (3). Both the first stirring shaft (2) and the second stirring shaft (3) are equipped with several staggered stirring blades (11), and the stirring blades (11) on the first stirring shaft (2) can rotate while reciprocating up and down shearing motion. Both the first stirring shaft (2) and the second stirring shaft (3) are provided with drill bits (14) at their lower ends. A grouting port (15) is provided above the drill bit (14). The mounting plate (1) is equipped with a device that can control the grouting flow rate and is compatible with the injection port. A grouting pipe (30) is connected to the grouting port (15). Several mounting shafts (13) are equidistantly arranged at the lower end of the first stirring shaft (2). The mounting shafts (13) are integrally arranged through mounting rings (12). The stirring blades (11) are installed at both ends of the mounting shafts (13). Splines corresponding to the mounting shafts (13) are provided on the stirring shafts. A cam (10) is fixedly connected to the lower end of the second stirring shaft (3). A rotating cylinder (18) rotatably connected to the second stirring shaft (3) is provided at the upper end of the cam (10). A first inner groove column (2) is rotatably connected to the lower end of the first stirring shaft (2). 1) A rectangular slide (16) is slidably connected to the first inner groove column (21). A limiting slide pin (31) is installed on the inner side of the rectangular slide (16) and is slidably connected to the slide groove opened on the first inner groove column (21). One end of the rectangular slide (16) is rotatably connected to a pressing wheel (24) corresponding to the cam (10). The lower end of the first inner groove column (21) is provided with a second inner groove column (22) fixedly connected to the mounting shaft (13). A connecting rod (17) is rotatably connected to the rectangular slide (16). The lower end of the connecting rod (17) is provided with a part housed in the second inner groove column (22). The pin (23) has a fixed plate (25) that is fixedly connected to the first stirring shaft (2) slidably disposed on one end wall of the mounting shaft (13). The fixed plate (25) has a rack (26) installed at both ends. The mounting shaft (13) has a gear (27) that is fixedly connected to the stirring blade (11) coaxially at both ends. The gear (27) meshes with the rack (26). The second stirring shaft (3) has a second elliptical gear (28) fixedly installed at the upper end. The first stirring shaft (2) has a first elliptical gear (29) that meshes with the second elliptical gear (28) fixedly installed at the upper end.

2. The shotcrete mixing pile construction equipment according to claim 1, characterized in that: A fixing block (20) is fixedly connected to the upper end of the rectangular slide (16). A spring (19) is installed between the rotating cylinder (18) and the fixing block (20). A slide cylinder (32) is fixedly connected to one end of the rotating cylinder (18). A slide rod (33) that is slidably connected to the inner wall of the slide cylinder (32) is installed at one end of the fixing block (20). The spring (19) is sleeved on the slide cylinder (32) and the slide rod (33).

3. The shotcrete mixing pile construction equipment according to claim 1, characterized in that: A motor (4) is installed on the mounting plate (1). The output shaft of the motor (4) is fixedly connected to a drive bevel gear (5). The drive bevel gear (5) meshes with a driven bevel gear (6). The driven bevel gear (6) is fixedly installed on the second stirring shaft (3).

4. The shotcrete mixing pile construction equipment according to claim 1, characterized in that: The upper ends of the first stirring shaft (2) and the second stirring shaft (3) are both equipped with rotary sealing joints (9), and the rotary sealing joints (9) are connected to each other through an installation pipe (7). The rotary sealing joints (9) are also equipped with flow control valves (8) that are compatible with the installation pipe (7).

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