Energy-saving mixing pile machine with double helix mixing blades

Abstract

This utility model relates to the field of mixing pile machine technology, specifically an energy-saving mixing pile machine using double-helix mixing blades, including a support base; and a U-shaped mudguard with a connecting plate fixed to its rear end. Slots are provided at both the upper and lower ends of the connecting plate. The U-shaped mudguard can fully cover the helical rotation area, effectively intercepting mud ejected during helical drilling and preventing mud from splashing everywhere. This not only prevents mud from corroding and wearing the construction equipment, reducing equipment failure rates, but also reduces mud pollution to the construction site environment. The mudguard is easily installed and removed via a fixing component. During operation, simply turning the handwheel at the top of the double-ended screw drives the connecting plates at both ends to move the insert blocks up and down along the guide rail, quickly completing the insertion and separation of the insert blocks from the slots on the connecting plates. This design allows for quick installation and removal of the mudguard, facilitating assembly during construction and disassembly and cleaning afterward.

Description

Technical Field

[0001] This utility model relates to the field of mixing pile machine technology, specifically an energy-saving mixing pile machine using double helical mixing blades. Background Technology

[0002] A soil mixing pile machine is a type of piling machinery used for reinforcing soft soil foundations. It can be categorized into single-shaft, dual-shaft, and triple-shaft mixing pile machines. A dual-shaft mixing pile machine has two symmetrically arranged mixing shafts (usually circular or a combined cross-section), driven by a gearbox or hydraulic system to achieve synchronous counter-rotation. During rotation, the soil flow generated by the dual-shaft blades shears and compresses against each other, significantly reducing the resistance of the soil to the drilling tool, resulting in a faster drilling speed compared to a single-shaft pile machine.

[0003] During the construction of spiral mixing pile machines, due to the lack of a specially designed mud-blocking mechanism, mud splashes everywhere when the spiral drills. Currently, construction workers mostly choose to use locally sourced materials, such as wooden planks, as temporary barriers around the drilling point to block the mud. This method has obvious drawbacks. On the one hand, the installation of materials such as wooden planks is cumbersome, requiring repeated adjustments and fixation, resulting in low construction and assembly efficiency. On the other hand, the structural stability of the temporary barriers is poor, making it difficult to effectively block the splashed mud. This results in poor mud-blocking effect, making the construction equipment susceptible to mud corrosion and wear, polluting the construction site environment, and potentially threatening the safety of operators. Furthermore, disassembly and cleaning after construction are very inconvenient. In view of this, we propose an energy-saving mixing pile machine using double spiral mixing blades. Utility Model Content

[0004] The purpose of this invention is to provide an energy-saving mixing pile machine with double helical mixing blades to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] Energy-saving mixing pile machines employing double-helix mixing blades include:

[0007] The support base has telescopic feet installed at the four corners of its bottom.

[0008] The stirring unit includes a base hinged to the front end of the support seat, with grooves on both sides of the base; a U-shaped frame is slidably installed on the front side of the base, and a guide block that is slidably connected to the groove is fixed inside the opening of the U-shaped frame; a hollow box is fixed to the front end of the U-shaped frame, and two rotating shafts are rotatably installed below the box, with a spiral connected to the outer wall of the rotating shafts by a coaxial key.

[0009] The mudguard is installed at the lower front side of the base to block the sludge thrown out when the spiral rotates; it includes a U-shaped mudguard plate with a connecting plate fixed at the rear end of the mudguard plate, and slots are provided at both the upper and lower ends of the connecting plate.

[0010] Each connecting plate is equipped with a fixing component, which includes a fixing frame that is fixedly connected to the outer wall of the base. The side wall of the fixing frame near the base is open, and the outer wall of the fixing frame has a connecting groove for the connecting plate to be inserted. A double-ended screw is rotatably installed in the inner cavity of the fixing frame. Movable plates are threadedly connected to the threaded grooves at both ends of the double-ended screw. Insert blocks are fixed at the two opposite ends of the two movable plates, and the insert blocks are inserted into the corresponding slots to restrict the connecting plate within the connecting groove.

[0011] As a preferred technical solution of this utility model, the U-shaped frame is U-shaped in overall shape and is fixedly connected to the box body by bolts. This design provides structural stability, convenient assembly and disassembly, easy equipment maintenance and component replacement, and improves construction efficiency.

[0012] As a preferred embodiment of this invention, the top end of the rotating shaft penetrates into the housing, and a gear is coaxially keyed to the outer wall of the rotating shaft near the top end. A motor for driving one of the rotating shafts is installed on the top of the housing. This design achieves efficient power transmission, ensures synchronous rotation of the two shafts, and results in more uniform mixing.

[0013] As a preferred embodiment of this invention, a U-shaped connecting frame is tightly welded to the bottom of the housing, and a rotating shaft passes through and is rotatably connected to the connecting frame. This design enhances structural rigidity, reduces swaying during construction, and improves the quality of pile formation.

[0014] As a preferred embodiment of this invention, the mudguard and the connecting plate are integrally formed, and the thickness of the mudguard is 0.8-1.2 cm. This design effectively prevents mud splashing, protects equipment and operators, and extends service life.

[0015] As a preferred embodiment of this invention, the top end of the double-ended lead screw passes through the top of the fixing frame, and a handwheel is coaxially connected to the top end of the double-ended lead screw. The handwheel allows for convenient rotation of the double-ended lead screw, simplifying operation and flexibly adapting to different construction needs, thus improving the equipment's versatility.

[0016] As a preferred technical solution of this utility model, the movable plate and the insert block are integrally formed, and the size of the movable plate is adapted to the inner cavity size of the fixed frame.

[0017] As a preferred embodiment of this invention, guide rails are fixed to both sides of the inner cavity of the fixed frame, and positioning grooves that slide and connect with the guide rails are provided on both sides of the movable plate. This design ensures smooth lifting and lowering of the insertion block, accurate positioning, and improved construction precision.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] The U-shaped mudguard effectively intercepts mud ejected during drilling, preventing it from splashing everywhere. This not only prevents mud from corroding and wearing down equipment, reducing equipment failure rates, but also minimizes mud pollution at the construction site, protecting operator safety and creating a clean and safe working environment. The mudguard is easily installed and removed via a fixed assembly. During operation, simply turning the handwheel at the top of the double-ended screw drives the connecting plates at both ends, causing the insert blocks to rise and fall along the guide rail, quickly connecting and disconnecting the insert blocks from the slots on the connecting plates. This design allows for rapid installation and removal of the mudguard, facilitating assembly during construction and disassembly and cleaning afterward. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the stirring section in this utility model;

[0022] Figure 3 This is a partial structural diagram of the stirring section in this utility model;

[0023] Figure 4 This is an exploded structural diagram of the mudguard part in this utility model;

[0024] Figure 5 This is a partial structural cross-sectional view of the mudguard part in this utility model;

[0025] In the picture:

[0026] 1. Support base; 10. Telescopic outriggers;

[0027] 2. Base; 20. Slide rail; 21. U-shaped frame; 210. Guide block; 22. Housing; 23. Motor; 24. Connecting frame; 25. Shaft; 26. Spiral; 27. Gear;

[0028] 3. Mudguard; 30. Mudguard plate; 31. Connecting plate; 310. Slot; 32. Fixing bracket; 320. Connecting groove; 321. Guide rail; 33. Double-ended lead screw; 34. Movable plate; 35. Insert block; 36. Handwheel. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] This embodiment provides a technical solution:

[0031] Please see Figure 1 As shown, the energy-saving mixing pile machine with double helical mixing blades includes a support base 1, and telescopic legs 10 are installed at the four corners of the bottom of the support base 1.

[0032] Through the above-mentioned configuration, the telescopic support leg 10 provides stable support for the support base 1, ensuring the stability of the support base 1.

[0033] It is understood that the telescopic outrigger 10 in this embodiment can be a hydraulically driven telescopic outrigger. The hydraulically driven telescopic outrigger uses a hydraulic cylinder as a power source, and pressure oil is provided by a hydraulic pump station to drive the piston rod to extend and retract, thereby realizing the raising and lowering of the outrigger. The outrigger usually adopts a multi-stage sleeve structure, such as two-stage or three-stage telescopic, to obtain a larger extension stroke.

[0034] Please see Figures 1-3 As shown, the stirring part includes a base 2 hinged to the front end of the support 1, and grooves 20 are provided on both sides of the base 2; a U-shaped frame 21 is slidably installed on the front side of the base 2, and a guide block 210 that is slidably connected to the groove 20 is fixed in the opening of the U-shaped frame 21; a hollow box 22 is fixed to the front end of the U-shaped frame 21, and two rotating shafts 25 are rotatably installed below the box 22, and a spiral 26 is coaxially keyed to the outer wall of the rotating shaft 25;

[0035] In this embodiment, the U-shaped frame 21 has an overall U-shaped shape and is fixedly connected to the housing 22 by bolts. The U-shaped frame 21 has better structural strength, and the bolt fixing method ensures the reliability and stability of the connection.

[0036] Please see Figure 2 and Figure 3 As shown, in this embodiment, the top end of the rotating shaft 25 passes into the housing 22, and a gear 27 is coaxially keyed to the outer wall of the rotating shaft 25 near the top end. A motor 23 for driving one of the rotating shafts 25 to rotate is installed on the top of the housing 22. The meshing between the two gears 27 facilitates the synchronous relative rotation of the two rotating shafts 25, while the single motor 23 simplifies the structure and reduces energy consumption.

[0037] In this embodiment, a U-shaped connecting frame 24 is tightly welded to the bottom of the housing 22, and the rotating shaft 25 passes through the connecting frame 24 and is rotatably connected to the connecting frame 24. The U-shaped connecting frame 24 has better structural strength and can provide better support for the rotating shaft 25, ensuring the stability and smoothness of the rotation of the rotating shaft 25.

[0038] It is understood that in this embodiment, the base 2 is connected to the front end of the support 1 via a pin hinge assembly, and self-lubricating bearings are provided on both sides of the pin to reduce friction. This hinge structure is a conventional design of existing mixing pile machines, which can realize the adjustment of the pitch angle of the mixing part relative to the support, making it convenient to adapt to different stratum dip angles during construction or to fold and store during transportation to reduce the height of the equipment. At the same time, the flipping action of the mixing part is usually driven by a hydraulic cylinder or an electric push rod, which is a well-known technology in the field. For example, one end of the hydraulic cylinder is hinged to the bottom of the support 1, and the other end is hinged to the rear side of the base 2. The base rotates around the pin by extending and retracting the cylinder. In addition, the overall lifting of the box 22 and the spiral 26 is achieved by the vertical lifting mechanism of the support 1. This mechanism is a mature solution in the prior art. Common forms include: a winch is set on the top of the support 1, and the wire rope is connected to the mixing part by passing around the pulley block. The lifting of the mixing part is achieved by the winch winding and releasing the wire rope. The guide rail 321 or guide column, such as the rectangular steel pipes at the four corners of the support, ensures that the lifting process is stable and vertical.

[0039] Please see Figures 4-5 As shown, the mudguard 3 is installed at the lower front side of the base 2 to block the sludge thrown out when the spiral 26 rotates; it includes a U-shaped mudguard 30, and a connecting plate 31 is fixed to the rear end of the mudguard 30. The upper and lower ends of the connecting plate 31 are provided with slots 310; the connecting plate 31 is provided with a fixing component, which includes a fixing frame 32 fixedly connected to the outer wall of the base 2. The fixing frame 32 is fixedly connected to the outer wall of the base 2 by bolts. The side wall of the fixing frame 32 near the base 2 is open. The outer wall of the fixing frame 32 is provided with a connecting groove 320 for the connecting plate 31 to be inserted; a double-ended screw 33 is rotatably installed in the inner cavity of the fixing frame 32. The threaded grooves at the upper and lower ends of the double-ended screw 33 are threadedly connected to movable plates 34. The two opposite ends of the two movable plates 34 are fixed with insert blocks 35, and the insert blocks 35 are inserted into the corresponding slots 310 and restrict the connecting plate 31 within the connecting groove 320.

[0040] With the above-mentioned configuration, this design not only facilitates the blocking of splashing mud by the mudguard 30, but also facilitates the disassembly and assembly of the mudguard 30, thereby meeting the needs of assembly, disassembly and cleaning.

[0041] In this embodiment, the mudguard 30 and the connecting plate 31 are integrally formed, and the thickness of the mudguard 30 is 0.8-1.2 cm. The integrally formed mudguard 30 and connecting plate 31 have better connection strength, ensuring the connection stability and reliability between the mudguard 30 and the connecting plate 31, and ensuring the service life of the mudguard 30 and the connecting plate 31; at the same time, the preferred thickness of the mudguard 30 is 1 cm, which ensures the impact resistance of the mudguard 30 and ensures its service life.

[0042] Please see Figures 4-5 As shown, in this embodiment, the top end of the double-ended lead screw 33 passes through the top of the fixing frame 32, and a handwheel 36 is coaxially keyed to the top end of the double-ended lead screw 33. The handwheel 36 facilitates the rotation of the double-ended lead screw 33, improving the convenience of operation.

[0043] In this embodiment, the movable plate 34 and the insert block 35 are integrally formed, and the size of the movable plate 34 is adapted to the inner cavity size of the fixed frame 32. The integrally formed movable plate 34 and insert block 35 have better connection strength, ensuring the reliability and stability of the connection between the movable plate 34 and the insert block 35, while the adapted size ensures the smooth movement of the movable plate 34 in the inner cavity of the fixed frame 32.

[0044] In this embodiment, guide rails 321 are fixed to both sides of the inner cavity of the fixed frame 32, and positioning grooves that are slidably connected to the guide rails 321 are provided on both sides of the movable plate 34. The arrangement of guide rails 321 and positioning grooves increases the stability and smoothness of the movable plate 34 during lifting and lowering.

[0045] It is understood that the threaded grooves at the upper and lower ends of the double-ended lead screw 33 in this embodiment have opposite threading directions. When the double-ended lead screw 33 rotates, the movable plates 34 on the upper and lower sides move synchronously relative to each other, which facilitates the insertion of the plug 35 into or out of the slot 310.

[0046] It should be added that, in order to prevent water stains and sludge from entering the interior of the fixing frame 32, a rubber sealing gasket and liquid sealant are provided at the connection between the fixing frame 32 and the base 2; the double-ended screw 33 is sealed with a skeleton oil seal where it passes through the fixing frame 32; at the same time, the double-ended screw 33 in this embodiment is made of corrosion-resistant materials such as stainless steel, and the surface is phosphated to enhance the rust resistance.

[0047] It is worth noting that the motor 23 involved in this embodiment is a conventional technology and will not be described in detail here.

[0048] In practical use, firstly, the user vertically aligns the connecting plate 31 of the mudguard 30 with the connecting groove 320 of the fixing frame 32 and inserts it. When the mudguard 30 is pressed against the fixing frame 32, the user stops pushing the mudguard 30. Then, the user turns the handwheel 36 clockwise. The handwheel 36 drives the double-ended lead screw 33 to rotate. Since the threaded directions of the threaded grooves at the upper and lower ends of the double-ended lead screw 33 are opposite, and the movable plate 34 is threadedly connected to the threaded groove, the movable plates 34 on the upper and lower sides move synchronously relative to each other along the guide rail 321 toward the connecting plate 31, and the insert block 35 is inserted into the slot 310 of the connecting plate 31. The connecting plate 31 is then fixed with the connecting groove 320, and the mudguard 30 is installed.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An energy-saving mixing pile machine employing double-helix mixing blades, characterized in that, include: Support base (1), telescopic feet (10) are installed at the four corners of the bottom of the support base (1); The stirring part includes a base (2) hinged to the front end of the support base (1), and both sides of the base (2) are provided with sliding grooves (20); a U-shaped frame (21) is slidably installed on the front side of the base (2), and a guide block (210) that is slidably connected to the sliding groove (20) is fixed in the opening of the U-shaped frame (21); a hollow box (22) is fixed to the front end of the U-shaped frame (21), and two rotating shafts (25) are rotatably installed below the box (22), and a spiral (26) is coaxially keyed to the outer wall of the rotating shaft (25); The mudguard (3) is installed at the lower front side of the base (2) to block the mud thrown out when the spiral (26) rotates; it includes a U-shaped mudguard (30), and a connecting plate (31) is fixed at the rear end of the mudguard (30). The upper and lower ends of the connecting plate (31) are provided with slots (310). Each connecting plate (31) is provided with a fixing component, which includes a fixing frame (32) fixedly connected to the outer wall of the base (2). The side wall of the fixing frame (32) near the base (2) is open. The outer wall of the fixing frame (32) is provided with a connecting groove (320) for the connecting plate (31) to be inserted. A double-ended screw (33) is rotatably installed in the inner cavity of the fixing frame (32). The upper and lower ends of the double-ended screw (33) are threaded with movable plates (34). The two opposite ends of the two movable plates (34) are fixed with inserts (35), and the inserts (35) are inserted into the corresponding slots (310) and restrict the connecting plate (31) within the connecting groove (320).

2. The energy-saving mixing pile machine with double-helix mixing blades according to claim 1, characterized in that: The U-shaped frame (21) is U-shaped in overall shape and is fixedly connected to the box body (22) by bolts.

3. The energy-saving mixing pile machine with double-helix mixing blades according to claim 1, characterized in that: The top end of the shaft (25) is inserted into the housing (22). A gear (27) is coaxially keyed to the outer wall of the shaft (25) near the top end. A motor (23) for driving one of the shafts (25) to rotate is installed on the top of the housing (22).

4. The energy-saving mixing pile machine with double-helix mixing blades according to claim 1, characterized in that: The bottom of the box (22) is tightly welded with a U-shaped connecting frame (24), and the rotating shaft (25) passes through the connecting frame (24) and is rotatably connected to the connecting frame (24).

5. The energy-saving mixing pile machine with double-helix mixing blades according to claim 1, characterized in that: The mudguard (30) and the connecting plate (31) are integrally formed structures, and the thickness of the mudguard (30) is 0.8-1.2cm.

6. The energy-saving mixing pile machine with double-helix mixing blades according to claim 1, characterized in that: The top end of the double-ended lead screw (33) passes through the top of the fixing frame (32), and the top end of the double-ended lead screw (33) is coaxially keyed with a handwheel (36).

7. The energy-saving mixing pile machine with double-helix mixing blades according to claim 1, characterized in that: The movable plate (34) and the insert (35) are integrally formed structures, and the size of the movable plate (34) is adapted to the inner cavity size of the fixed frame (32).

8. The energy-saving mixing pile machine with double-helix mixing blades according to claim 1, characterized in that: The inner walls of the fixed frame (32) are both fixed with guide rails (321), and the two walls of the movable plate (34) are both provided with positioning grooves that are slidably connected to the guide rails (321).

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