A pile-forming device, method and pile structure for coal construction

Abstract

The present invention provides a pile-forming device, method and pile structure for coal construction, belonging to the technical field of coal construction, including a bearing frame, a moving frame, a rotating ring, a driving mechanism, a main drill, a sub-drill and a pushing and pulling mechanism; an avoidance hole and a lifting mechanism are provided on the bearing frame, the moving frame is installed on the lifting mechanism and has a long strip hole, a first annular groove, a second annular groove and a clamping assembly; the rotating ring is installed in the first annular groove, and a transmission part is provided on the rotating ring; the driving mechanism is installed on the moving frame and is connected to the transmission part, the main drill is slidably connected to the moving frame and is provided with an outward expansion mechanism, the sub-drill is fixedly connected to the lower end of the rotating ring and is provided with an outward expansion mechanism; the pushing and pulling mechanism is installed on the moving frame and is connected to the main drill, and the pushing and pulling mechanism is used to drive the main drill to avoid the central position of the long strip hole. The pile-forming device for coal construction provided by the present invention has a relatively high pile-forming efficiency, and improves the stability and safety of the pile foundation.

Description

Technical Field

[0001] The present invention belongs to the technical field of coal construction, and more specifically, relates to a pile-forming device, method and pile structure for coal building construction. Background Art

[0002] Coal construction refers to various engineering construction activities carried out during the process of coal resource exploitation and utilization. These activities include mine construction, roadway excavation, surface facility construction, etc., covering the entire process from coal resource exploration, exploitation to transportation and processing. The complexity and diversity of coal construction require the use of a variety of engineering technologies and equipment to ensure the efficiency and safety of construction. In order to ensure the safety during coal mining, it is necessary to form piles under the ground in the construction area to ensure that the construction area has a stable foundation structure with high bearing capacity, adapting to complex geological conditions, special foundation requirements and environmental protection. Currently, during the process of underground pile formation, multiple process steps and various equipment are required to complete the construction of the pile foundation, with cumbersome steps and low efficiency; at the same time, the bearing capacity of the formed bored piles is insufficient, resulting in potential safety hazards. Summary of the Invention

[0003] The purpose of the present invention is to provide a pile-forming device, method and pile structure for coal building construction, so as to solve the technical problems existing in the prior art, such as cumbersome pile-forming steps, low efficiency, and insufficient bearing capacity of bored piles with potential safety hazards.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: providing a pile-forming device for coal building construction, including:

[0005] A bearing frame installed on the construction area; an avoidance hole is provided on the bearing frame, a lifting mechanism is provided on the bearing frame, and the lifting mechanism is arranged at an interval from the avoidance hole;

[0006] A moving frame installed on the lifting mechanism and having the freedom of moving up and down; a long hole and a first annular groove and a second annular groove arranged around the long hole are provided on the moving frame. The first annular groove is opened on the upper end surface of the moving frame, the second annular groove is opened on the lower end surface of the moving frame, and the first annular groove and the second annular groove are vertically corresponding and communicated; the width of the first annular groove is greater than the width of the second annular groove; a clamping assembly is provided on the moving frame on one side of the long hole;

[0007] A rotating ring installed in the first annular groove and rotatably connected with the moving frame; a transmission part is provided on the rotating ring;

[0008] A driving mechanism installed on the moving frame and connected with the transmission part for driving the rotating ring to rotate;

[0009] The main drilling rig is installed at the upper end in the long strip hole and is slidably connected to the moving frame; an outward expansion mechanism is provided on the drill pipe of the main drilling rig;

[0010] The auxiliary drilling rig has its upper end located in the second annular groove and is fixedly connected to the lower end of the rotating ring; an outward expansion mechanism is provided on the drill pipe of the auxiliary drilling rig;

[0011] The push-pull mechanism is installed on the moving frame and is connected to the main drilling rig for driving the main drilling rig to avoid the central position of the long strip hole.

[0012] In a possible implementation manner, the moving frame includes:

[0013] The outer frame is connected to the lifting mechanism; the inner wall of the outer frame has a stepped surface;

[0014] The inner block is installed on the inner wall of the outer frame, and there is a receiving space between the outer wall and the inner wall of the outer frame; the outer wall of the inner block has a stepped surface, and the receiving space forms the first annular groove and the second annular groove arranged up and down; the long strip hole is opened on the inner block;

[0015] The connecting rod is installed above the outer frame and the inner block; the connecting rod is in an inverted U shape, and both ends are respectively fixedly connected to the upper end surface of the outer frame and the upper end surface of the inner block.

[0016] In a possible implementation manner, an installation groove communicating with the first annular groove is provided on the inner wall of the outer frame, and a communication hole extending downward and communicating with the installation groove is provided on the upper end surface; the driving mechanism includes a transmission gear and a driving motor, the transmission gear is installed in the installation groove and is rotatably connected to the outer frame; the driving motor is installed on the upper end of the outer frame, and the output shaft of the driving motor passes through the communication hole and is connected to the transmission gear; the transmission part is a tooth structure meshing with the transmission gear.

[0017] In a possible implementation manner, two receiving grooves are opened on the inner block on the inner wall of the long strip hole, and the receiving grooves correspond to the center of the long strip hole, and the two receiving grooves are symmetrically arranged; two fixing mechanisms are further provided on the inner block and are respectively installed in the receiving grooves, the fixing mechanism includes a driving component and a hoop, the driving component is fixedly installed in the receiving groove, the hoop is slidably connected in the receiving groove, and one end is fixedly connected to the free end of the driving component; the other end of the hoop is provided with an arc groove adapted to the outer wall of the main drilling rig.

[0018] In a possible implementation manner, a guiding groove located on one side of the long strip hole is provided at the upper end of the moving frame, and a guiding block slidably and cooperatively connected with the guiding groove is provided on the main drilling rig; a supporting plate located above the first annular groove is provided on the moving frame, the pushing and pulling mechanism is installed on the supporting plate, a first connecting member is provided at the free end of the pushing and pulling mechanism, and a second connecting member detachably connected with the first connecting member is provided on the main drilling rig.

[0019] In a possible implementation manner, the outward expansion mechanism includes a sliding block, a fixed block, a first rotating rod, a second rotating rod, a driver and a blocking sleeve; working cavities are respectively formed in the drill pipes of the main drilling rig and the auxiliary drilling rig, and an inlet and outlet communicated with the working cavity is formed in the outer wall, the sliding block, the first rotating rod, the second rotating rod and the driver are all installed in the working cavity, and the first rotating rod and the second rotating rod correspond to the inlet and outlet; the driver and the sliding block are located above the inlet and outlet, and the fixed block is located below the inlet and outlet; the first rotating rod and the second rotating rod are arranged vertically, and the first rotating rod and the second rotating rod are hinged, the upper end of the first rotating rod is hinged with the sliding block, and the lower end of the second rotating rod is hinged with the fixed block; a sliding groove is formed at the top of the inlet and outlet, the blocking sleeve is installed in the sliding groove and has the freedom to move up and down in the sliding groove, and the blocking sleeve is used for blocking the inlet and outlet.

[0020] In a possible implementation manner, the bearing frame includes a main frame, traveling wheels installed at the rear side of the main frame, and hydraulic legs installed at the front side of the main frame, the lifting mechanism is installed on the main frame, the avoidance hole is formed in the main frame and is located between the traveling wheels and the hydraulic legs; a connecting end for connecting with a power machine is further provided at the front side of the main frame.

[0021] The beneficial effects of the pile-forming equipment for coal building construction provided by the present invention are as follows: Compared with the prior art, when the pile-forming equipment for coal building construction of the present invention is working, the driving carrier is moved above the construction area, the lifting mechanism is started to control the moving frame to move upward, and auxiliary drilling rigs are respectively installed on the moving frame. The upper end of the auxiliary drilling rig is located in the second annular groove and is connected to the rotating ring; the lifting mechanism, the auxiliary drilling rig and the outward expansion mechanism are started to drill holes in the area to be pile-formed to form the first pile holes, and the rotating ring is controlled to rotate on the moving frame by starting the driving mechanism to form a plurality of first pile holes arranged in a ring shape; a main drilling rig is installed on the moving frame, and the upper end of the main drilling rig penetrates into the long strip hole, and the main drilling rig is slidably connected to the moving frame; the auxiliary drilling rig is disassembled and a pouring hose is installed at the lower end of the rotating ring, and the pouring hose is used to pour concrete into the first pile holes; the lifting mechanism, the main drilling rig and the outward expansion mechanism are started to drill holes in the area to be pile-formed to form the second pile holes; at the same time, the pouring hose pours concrete into the first pile holes; the pushing and pulling mechanism is started to drive the main drilling rig to move in the long strip hole so that the main drilling rig and the second pile holes are arranged staggeredly; and a central column is hoisted from top to bottom into the long strip hole by using a crane and is clamped on the central column by using the clamping assembly; the lifting mechanism is started to drive the central column into the second pile hole; the outer diameter of the central column is smaller than the inner diameter of the second pile hole; the pouring hose is controlled to penetrate downward from the long strip hole and pour concrete into the space between the second pile hole and the central column; in this way, the formed pile foundation is composed of two parts, with a large coverage area, so as to form a pile foundation with multiple concrete columns in the construction area, having strong bearing performance and high safety; and by adopting the lifting mechanism, the rotating ring, the driving mechanism and the prefabricated central column, etc., the pile-forming efficiency of the pile-forming equipment is relatively high, and the stability and safety of the pile foundation are improved.

[0022] Another object of the present invention is to provide a method for coal building construction pile forming, including the above-mentioned pile-forming equipment for coal building construction; further including:

[0023] S1: Drive the carrier to move above the construction area, and the avoidance hole corresponds to the area to be pile-formed up and down;

[0024] S2: Start the lifting mechanism to control the moving frame to move upward, and respectively install auxiliary drilling rigs on the moving frame. The upper end of the auxiliary drilling rig is located in the second annular groove and is connected to the rotating ring; start the lifting mechanism, the auxiliary drilling rig and the outward expansion mechanism to drill holes in the area to be pile-formed to form the first pile holes, and control the rotating ring to rotate on the moving frame by starting the driving mechanism to form a plurality of first pile holes arranged in a ring shape;

[0025] S3: Install the main drill on the moving frame, and insert the upper end of the main drill into the long hole. The main drill is slidably connected to the moving frame; disassemble the auxiliary drill and install a pouring hose at the lower end of the rotating ring. The pouring hose is used to pour concrete into the first pile hole; start the lifting mechanism, the main drill and the outward expansion mechanism to drill in the area to be formed into a pile and form a second pile hole; at the same time, the pouring hose pours concrete into the first pile hole.

[0026] S4: Start the push-pull mechanism to drive the main drill to move in the long hole so that the main drill and the second pile hole are staggered; use a crane to hoist the central column from top to bottom into the long hole, and use the clamping assembly to clamp onto the central column; start the lifting mechanism to drive the central column into the second pile hole; the outer diameter of the central column is smaller than the inner diameter of the second pile hole.

[0027] S5: Control the pouring hose to penetrate downward from the long hole and pour concrete into the space between the second pile hole and the central column.

[0028] In a possible implementation manner, in step S3, expand at the bottom of the second pile hole to form an enlarged hole, and the diameter of the enlarged hole is two to three times the diameter of the second pile hole; before using a crane to hoist the central column in step S4, use the pouring hose to pre-pour concrete into the enlarged hole, and install the central column into the second pile hole before the concrete in the enlarged hole hardens; the lower end of the central column enters the concrete in the enlarged hole, and the clamping assembly acts on the central column to make the center line of the central column perpendicular to the horizontal plane.

[0029] The pile forming method for coal mine construction provided by the present invention uses a pile forming device for coal mine construction. Therefore, the pile foundation arranged in the construction area includes two parts. One is the main pile body formed by the central column and concrete, and the other is a plurality of auxiliary pile bodies arranged around the main pile body, so that the entire pile foundation has strong bearing performance. And during the construction process, the efficiency of pile forming operation is high by the bearing frame, the lifting mechanism, the moving frame, the rotating ring, the main drill and the auxiliary drill.

[0030] Another object of the present invention is to provide a pile structure, including:

[0031] A main pile body, which is used to be arranged under the ground; the main pile body includes a bottom pouring body, a central column and a cylindrical pouring body. The lower end of the cylindrical pouring body is fixedly installed on the central column. The central column is installed on the cylindrical pouring body and is fixedly connected to the bottom pouring body; a plurality of expansion parts for inserting into the soil are arranged on the outer wall of the cylindrical pouring body.

[0032] Auxiliary pile bodies, multiple in number, are arranged around the main pile body; the auxiliary pile bodies are arranged in parallel with the main pile body, and the lower ends of the auxiliary pile bodies are connected to the bottom casting body; a plurality of expansion parts for inserting into the soil body are arranged on the outer sides of the auxiliary pile bodies.

[0033] The beneficial effects of the pile structure provided by the present invention are as follows: Compared with the prior art, in the pile structure of the present invention, by means of arranging multiple auxiliary pile bodies around the main pile body, the bearing performance of the pile structure in the to-be-piled area is relatively high; and the strength of the central column on the main pile body is greater than that of the bottom casting body, the cylindrical casting body and the auxiliary pile bodies, so that the main pile body can bear a relatively high pressure, etc. And under the action of the auxiliary pile bodies, the acting force in the to-be-piled area can be effectively dispersed, and the safety is higher. In a construction area, a plurality of to-be-piled areas are arranged, and a main pile body and a plurality of auxiliary pile bodies are arranged in each to-be-piled area. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0035] Figure 1 It is a schematic structural diagram of a pile-forming device for coal mine construction provided by an embodiment of the present invention;

[0036] Figure 2 It is a schematic connection diagram of a mobile frame, a main drilling rig and a sub-drilling rig provided by an embodiment of the present invention;

[0037] Figure 3 It is a top view of a pile-forming device for coal mine construction provided by an embodiment of the present invention;

[0038] Figure 4 It is a sectional view of a mobile frame provided by an embodiment of the present invention;

[0039] Figure 5 It is a schematic structural diagram of a sub-drilling rig and a hole-expanding mechanism provided by an embodiment of the present invention;

[0040] Figure 6 It is a schematic use state diagram of a pile-forming device for coal mine construction provided by an embodiment of the present invention Figure 1 ;

[0041] Figure 7 It is a schematic use state diagram of a pile-forming device for coal mine construction provided by an embodiment of the present invention Figure 2 ;

[0042] Figure 8Structural schematic diagram of the pile structure provided by the embodiment of the present invention.

[0043] Among them, each reference numeral in the figure:

[0044] 10, bearing frame; 11, avoidance hole; 12, lifting mechanism; 13, main frame; 14, traveling wheel; 15, hydraulic leg; 16, clamping assembly;

[0045] 20, moving frame; 21, long strip hole; 22, first annular groove; 23, second annular groove; 24, outer frame; 25, inner block; 251, receiving groove; 26, connecting rod; 27, installation groove; 28, communication hole; 29, support plate;

[0046] 30, rotating ring; 31, transmission part;

[0047] 40, driving mechanism; 41, transmission gear; 42, driving motor;

[0048] 50, main drilling rig; 51, outward expansion mechanism; 52, second connecting piece; 53, slider; 54, fixed block; 55, first rotating rod; 56, second rotating rod; 57, driver; 58, sealing sleeve;

[0049] 60, auxiliary drilling rig; 61, working cavity; 62, inlet and outlet;

[0050] 70, pushing and pulling mechanism; 71, first connecting piece; 72, first pile hole; 73, second pile hole; 74, hole expansion;

[0051] 80, fixing mechanism; 81, driving component; 82, hoop;

[0052] 90, main pile body; 91, bottom casting body; 92, central column; 93, cylindrical casting body; 94, auxiliary pile body. Detailed implementation manners

[0053] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0054] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0055] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0056] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0057] Please refer to Figures 1 to 8 , and now the pile-forming equipment for coal building construction provided by the present invention will be described. A pile-forming equipment for coal building construction includes a carrier frame 10, a moving frame 20, a rotating ring 30, a driving mechanism 40, a main drill 50, a sub-drill 60, and a pushing and pulling mechanism 70; the carrier frame 10 is installed on the construction area; an avoidance hole 11 is provided on the carrier frame 10, and a lifting mechanism 12 is provided on the carrier frame 10, and the lifting mechanism 12 is arranged at an interval from the avoidance hole 11; the moving frame 20 is installed on the lifting mechanism 12 and has the freedom to move up and down; a long hole 21 and a first annular groove 22 and a second annular groove 23 arranged around the long hole 21 are provided on the moving frame 20. The first annular groove 22 is opened on the upper end surface of the moving frame 20, and the second annular groove 23 is opened on the lower end surface of the moving frame 20, and the first annular groove 22 and the second annular groove 23 are vertically corresponding and communicated; the width of the first annular groove 22 is greater than the width of the second annular groove 23; a clamping assembly 16 is provided on the moving frame 20 on one side of the long hole 21; the rotating ring 30 is installed in the first annular groove 22 and is rotationally connected to the moving frame 20; a transmission part 31 is provided on the rotating ring 30; the driving mechanism 40 is installed on the moving frame 20 and is connected to the transmission part 31 for driving the rotating ring 30 to rotate; the upper end of the main drill 50 is installed in the long hole 21 and is slidably connected to the moving frame 20; an outward expansion mechanism 51 is provided on the drill pipe of the main drill 50; the upper end of the sub-drill 60 is located in the second annular groove 23 and is fixedly connected to the lower end of the rotating ring 30; an outward expansion mechanism 51 is provided on the drill pipe of the sub-drill 60; the pushing and pulling mechanism 70 is installed on the moving frame 20 and is connected to the main drill 50 for driving the main drill 50 to avoid the central position of the long hole 21.

[0058] The pile-forming equipment for coal construction provided by the present invention, compared with the prior art, during operation, drives the bearing frame 10 to move above the construction area, starts the lifting mechanism 12 to control the moving frame 20 to move upward, and respectively installs auxiliary drilling rigs 60 on the moving frame 20. The upper ends of the auxiliary drilling rigs 60 are located in the second annular groove 23 and are connected to the rotating ring 30; starts the lifting mechanism 12, the auxiliary drilling rigs 60 and the outward expansion mechanism 51 to drill holes in the area to be pile-formed and form the first pile holes 72, and controls the rotating ring 30 to rotate on the moving frame 20 by starting the driving mechanism 40 to form a plurality of first pile holes 72 arranged in a ring shape; installs the main drilling rig 50 on the moving frame 20 and the upper end of the main drilling rig 50 penetrates into the long strip hole 21, and the main drilling rig 50 is slidably connected to the moving frame 20; disassembles the auxiliary drilling rigs 60 and installs a pouring hose at the lower end of the rotating ring 30, and the pouring hose is used to pour concrete into the first pile holes 72; starts the lifting mechanism 12, the main drilling rig 50 and the outward expansion mechanism 51 to drill holes in the area to be pile-formed and form the second pile holes 73; at the same time, the pouring hose pours concrete into the first pile holes 72; starts the pushing and pulling mechanism 70 to drive the main drilling rig 50 to move in the long strip hole 21, so that the main drilling rig 50 and the second pile holes 73 are arranged in a staggered manner; and uses a crane to hoist the central column 92 from top to bottom into the long strip hole 21, and uses the clamping assembly 16 to clamp on the central column 92; starts the lifting mechanism 12 to drive the central column 92 into the second pile holes 73; the outer diameter of the central column 92 is smaller than the inner diameter of the second pile holes 73; controls the pouring hose to penetrate downward from the long strip hole 21 and pour concrete into the space between the second pile holes 73 and the central column 92; in this way, the formed pile foundation is composed of two parts, with a large coverage area, so as to form a pile foundation with multiple concrete columns in the construction area, having strong bearing performance and high safety; and by using the lifting mechanism 12, the rotating ring 30, the driving mechanism 40 and the prefabricated central column 92, etc., the pile-forming efficiency of this pile-forming equipment is relatively high, and the stability and safety of the pile foundation are improved.

[0059] The main pile body 90 is in the second pile holes 73, and the auxiliary pile bodies 94 are in the multiple first pile holes 72, and the auxiliary pile bodies 94 form a strengthening and combined effect on the main pile body 90.

[0060] Please refer to Figures 1 to 4, as a specific implementation of the pile-forming equipment for coal construction provided by the present invention, the moving frame 20 includes an outer frame 24, an inner block 25 and a connecting rod 26. The outer frame 24 is connected to the lifting mechanism 12; the inner wall of the outer frame 24 has a stepped surface; the inner block 25 is installed on the inner wall of the outer frame 24, and there is a receiving gap between the outer wall and the inner wall of the outer frame 24; the outer wall of the inner block 25 has a stepped surface, and the receiving gap forms a first annular groove 22 and a second annular groove 23 arranged up and down; a long hole 21 is opened on the inner block 25; the connecting rod 26 is installed above the outer frame 24 and the inner block 25; the connecting rod 26 is in an inverted U shape, and both ends are fixedly connected to the upper end surface of the outer frame 24 and the upper end surface of the inner block 25 respectively; the inner block 25 is located inside the outer frame 24, and there is a certain receiving gap between it and the inner wall of the outer frame 24. And the connecting rod 26 is arranged above the outer frame 24 and the inner block 25. The connecting rod 26 is a U-shaped rod and is installed in an inverted manner, so that both ends of the connecting rod 26 are fixedly connected to the upper end surfaces of the outer frame 24 and the inner block 25 respectively, so that the outer frame 24 and the inner block 25 are fixedly connected together, ensuring that the rotating ring 30 rotates smoothly between the outer frame 24 and the inner block 25. Stepped surfaces are provided on the inner wall of the outer frame 24 and the outer wall of the inner block 25, so that the rotating ring 30 is stably installed in the first annular groove 22. A bearing is provided on the outer side surface of the inner block 25, and the rotating ring 30 is installed in cooperation with the bearing.

[0061] Please refer to Figure 1 , Figure 2 and Figure 4 , as a specific implementation of the pile-forming equipment for coal construction provided by the present invention, an installation groove 27 communicating with the first annular groove 22 is provided on the inner wall of the outer frame 24, and a communication hole 28 extending downward and communicating with the installation groove 27 is provided on the upper end surface; the driving mechanism 40 includes a transmission gear 41 and a driving motor 42. The transmission gear 41 is installed in the installation groove 27 and is rotatably connected to the outer frame 24; the driving motor 42 is installed on the upper end of the outer frame 24, and the output shaft of the driving motor 42 passes through the communication hole 28 and is connected to the transmission gear 41; the transmission part 31 is a tooth structure meshing with the transmission gear 41; the installation groove 27 communicates with the first annular groove 22. The transmission gear 41 is installed in the installation groove 27, and the driving motor 42 is installed on the upper end surface of the outer frame 24, and the output shaft of the driving motor 42 passes through the communication hole 28 and is connected to the transmission gear 41, so that the transmission gear 41 can be driven to rotate; the transmission gear 41 and the tooth structure are meshed, so that the rotating ring 30 can rotate stably and accurately.

[0062] Please refer to Figure 1 , Figure 2 and Figure 4, as a specific embodiment of the pile-forming equipment for coal construction provided by the present invention, two receiving grooves 251 are formed on the inner block 25 on the inner wall of the long hole 21, and the receiving grooves 251 correspond to the center of the long hole 21, and the two receiving grooves 251 are symmetrically arranged; two fixing mechanisms 80 are further provided on the inner block 25 and are respectively installed in the receiving grooves 251. The fixing mechanism 80 includes a driving component 81 and a hoop 82. The driving component 81 is fixedly installed in the receiving groove 251, the hoop 82 is slidably connected in the receiving groove 251, and one end thereof is fixedly connected to the free end of the driving component 81; the other end of the hoop 82 is provided with an arc groove adapted to the outer wall of the main drill 50; receiving grooves 251 are arranged on the inner walls on both sides of the long hole 21, and fixing mechanisms 80 are arranged in the receiving grooves 251. With the help of the fixing mechanisms 80, the central column 92 can be fixed, so that the central column 92 can smoothly enter the second pile hole 73 in the ground. After using a crane to lift the central column 92 to directly above the long hole 21, the central column 92 is passed through the long hole 21 so that the upper end of the central column 92 corresponds to the fixing mechanism 80; the driving component 81 is started to control the hoop 82 to slide outwards, so that the two hoops 82 are clamped and held on the central column 92, thereby realizing the fixed connection between the moving frame 20 and the central column 92. Finally, the lifting mechanism 12 is started to control the moving frame 20 to move downwards, so that the central column 92 is accurately installed into the second pile hole 73. In this way, the central column 92 is accurately installed, which is convenient for subsequent pouring operations; and the clamping component 16 and the fixing mechanism 80 are used in combination, so that the central column 92 is clamped more stably. The clamping component 16 and the fixing mechanism 80 have the same structure and are correspondingly arranged up and down.

[0063] Please refer to Figure 1 and Figure 2, as a specific implementation manner of the pile-forming equipment for coal construction provided by the present invention, a guide groove is provided at the upper end of the moving frame 20 on one side of the long hole 21, and a guide block slidably engaged with the guide groove is provided on the main drill 50; a support plate 29 is provided on the moving frame 20 above the first annular groove 22, the pushing and pulling mechanism 70 is installed on the support plate 29, a first connecting member 71 is provided at the free end of the pushing and pulling mechanism 70, and a second connecting member 52 detachably connected to the first connecting member 71 is provided on the main drill 50; that is, when the main drill 50 is installed on the moving frame 20, the main drill 50 is installed from top to bottom, the drill rod of the main drill 50 passes through the long hole 21 and is located below the moving frame 20; the end of the main drill 50 is installed on the moving frame 20, and the guide block on the main drill 50 is fitted into the guide groove to achieve the sliding fit connection between the main drill 50 and the moving frame 20. The support plate 29 is arranged to straddle above the first annular groove 22 and is arranged vertically staggered with the rotating ring 30, so that mutual interference will not occur. The pushing and pulling mechanism 70 is installed on the support plate 29 and corresponds to the end of the main drill 50, so that the pushing and pulling mechanism 70 can accurately act on the main drill 50. The first connecting member 71 and the second connecting member 52 are set as electromagnetic elements connected to each other, and the first connecting member 71 and the second connecting member 52 can be firmly fixed together by means of the strong magnetic force generated by the power supply. Specifically, the first connecting member 71 is a ferromagnetic member, and the second connecting member 52 is an electromagnet. During operation, the pushing and pulling mechanism 70 is started to control the connection between the first connecting member 71 and the second connecting member 52, and then the power supply is started to make the second connecting member 52 have a strong magnetic force, so that the first connecting member 71 and the second connecting member 52 are fixedly connected by means of the magnetic force, and then the pushing and pulling mechanism 70 is used to drive the main drill 50 to move to one side of the long hole 21.

[0064] Please refer to Figure 2 and Figure 5, as a specific implementation of the pile-forming equipment for coal construction provided by the present invention, the outward expansion mechanism 51 includes a slider 53, a fixed block 54, a first rotating rod 55, a second rotating rod 56, a driver 57 and a sealing sleeve 58; working cavities 61 are provided in the drill pipes of the main drill 50 and the auxiliary drill 60, and inlets and outlets 62 communicating with the working cavities 61 are provided on the outer walls. The slider 53, the first rotating rod 55, the second rotating rod 56 and the driver 57 are all installed in the working cavity 61, and the first rotating rod 55 and the second rotating rod 56 correspond to the inlets and outlets 62; the driver 57 and the slider 53 are located above the inlets and outlets 62, and the fixed block 54 is located below the inlets and outlets 62; the first rotating rod 55 and the second rotating rod 56 are arranged up and down, and the first rotating rod 55 and the second rotating rod 56 are hinged. The upper end of the first rotating rod 55 is hinged to the slider 53, and the lower end of the second rotating rod 56 is hinged to the fixed block 54; a chute is provided at the top of the inlet and outlet 62, and the sealing sleeve 58 is installed in the chute and has the freedom to move up and down in the chute. The sealing sleeve 58 is used to block the inlet and outlet 62; the working cavity 61 is provided inside the drill pipes of the main drill 50 and the auxiliary drill 60, and the driver 57, the slider 53, the first rotating rod 55, the second rotating rod 56 and the fixed block 54 are sequentially arranged in the working cavity 61. The free end of the driver 57 is connected to the slider 53, thereby driving the slider 53 to slide up and down in the working cavity 61. The fixed block 54 is located at the bottom of the working cavity 61 and has a certain distance from the slider 53. The first rotating rod 55 and the second rotating rod 56 are installed between the slider 53 and the fixed block 54. The upper end of the first rotating rod 55 is hinged to the slider 53, the lower end of the second rotating rod 56 is hinged to the fixed block 54, and the lower end of the first rotating rod 55 is hinged to the upper end of the second rotating rod 56. When the main drill 50 or the auxiliary drill 60 is working normally, the driver 57 is started to control the slider 53 to move upward, so that the first rotating rod 55 and the second rotating rod 56 move towards the inside of the working cavity 61, and the first rotating rod 55 and the second rotating rod 56 are retracted into the working cavity 61. After the main drill 50 or the auxiliary drill 60 drills to a certain depth and needs to ream the hole at this depth, the driver 57 is started to control the slider 53 to move downward, so that the first rotating rod 55 and the second rotating rod 56 move outward by virtue of the hinged performance of the first rotating rod 55 and the second rotating rod 56, increasing the drilling diameter of the drill pipe. Both the first rotating rod 55 and the second rotating rod 56 are provided with two, and the two first rotating rods 55 are symmetrically arranged, and the two second rotating rods 56 are symmetrically arranged. A rotating shaft is provided at the upper end of the second rotating rod 56, and a rotating hole for cooperating with the rotating shaft is provided on the first rotating rod 55, and a protrusion for drilling is provided on the outer side surface of the lower end of the first rotating shaft.

[0065] Meanwhile, an inlet / outlet 62 is formed on the outer side surface of the drill pipe. The inlet / outlet 62 is communicated with the working chamber 61. A chute is formed at the top of the inlet / outlet 62, and a blocking sleeve 58 for closing the inlet / outlet 62 is installed in the chute, so that the movement of the blocking sleeve 58 in the chute can be controlled. The inlet / outlet 62 can be opened or closed by means of the blocking sleeve 58. Especially during the operation of the drill pipe, the blocking sleeve 58 closes the inlet / outlet 62. An electric push rod or the like for driving the blocking sleeve 58 to move up and down is arranged on the drill pipe.

[0066] Please refer to Figure 1 、 Figure 6 and Figure 7 , as a specific embodiment of the pile-forming equipment for coal construction provided by the present invention, the bearing frame 10 includes a main frame 13, traveling wheels 14 installed at the rear side of the main frame 13, and hydraulic legs 15 installed at the front side of the main frame 13. The lifting mechanism 12 is installed on the main frame 13, and the avoidance hole 11 is formed on the main frame 13 and is located between the traveling wheels 14 and the hydraulic legs 15. A connection end for connecting with a power machine is further arranged at the front side of the main frame 13. The main function of the bearing frame 10 is to install and support the entire pile-forming equipment, so that the entire pile-forming equipment can operate stably and safely. The lifting mechanism 12 is fixedly installed on the main frame 13 and is located outside the avoidance hole 11. Two lifting mechanisms 12 are provided and are respectively installed on both sides of the avoidance hole 11. The hydraulic legs 15 and the traveling wheels 14 are respectively installed on the front and rear sides of the main frame 13. By means of the hydraulic legs 15, the bearing frame 10 at the lower end in the working state can be firmly fixed on the ground for work. When the entire pile-forming equipment needs to be moved, the hydraulic legs 15 are retracted, and a tractor is fixed to the connection end on the main frame 13, so that the entire pile-forming equipment can be quickly moved to the next construction area by means of the traveling wheels 14.

[0067] Please refer to Figures 1 to 8, the embodiment of the present invention further provides a pile forming method for coal building construction. The pile forming method for coal building construction includes any one of the above-mentioned pile forming devices for coal building construction, and further includes S1: driving the bearing frame 10 to move above the construction area, and the avoidance hole 11 corresponds to the area where the pile is to be formed up and down; S2: starting the lifting mechanism 12 to control the moving frame 20 to move upward, and respectively installing the auxiliary drill 60 on the moving frame 20. The upper end of the auxiliary drill 60 is located in the second annular groove 23 and is connected to the rotating ring 30; starting the lifting mechanism 12, the auxiliary drill 60 and the outward expansion mechanism 51 to drill holes in the area where the pile is to be formed and form the first pile hole 72, and controlling the rotating ring 30 to rotate on the moving frame 20 by starting the driving mechanism 40 to form a plurality of first pile holes 72 arranged in a ring shape; S3: installing the main drill 50 on the moving frame 20, and the upper end of the main drill 50 penetrates into the long strip hole 21, and the main drill 50 is slidably connected to the moving frame 20; disassembling the auxiliary drill 60 and installing a pouring hose at the lower end of the rotating ring 30, and the pouring hose is used to pour concrete into the first pile hole 72; starting the lifting mechanism 12, the main drill 50 and the outward expansion mechanism 51 to drill holes in the area where the pile is to be formed and form the second pile hole 73; at the same time, the pouring hose pours concrete into the first pile hole 72; S4: starting the pushing and pulling mechanism 70 to drive the main drill 50 to move in the long strip hole 21, so that the main drill 50 and the second pile hole 73 are arranged in a staggered manner; and using a crane to hoist the central column 92 from top to bottom into the long strip hole 21, and using the clamping assembly 16 to clamp on the central column 92; starting the lifting mechanism 12 to drive the central column 92 into the second pile hole 73; the outer diameter of the central column 92 is smaller than the inner diameter of the second pile hole 73; S5: controlling the pouring hose to penetrate downward from the long strip hole 21 and pouring concrete into the space between the second pile hole 73 and the central column 92.

[0068] The pile forming method for coal building construction provided by the embodiment of the present invention adopts the above-mentioned pile forming device for coal building construction. Therefore, the pile foundation arranged in the construction area includes two parts. One is the main pile body 90 formed by the central column 92 and concrete, and the other is a plurality of auxiliary pile bodies 94 arranged around the main pile body 90, so that the bearing performance of the entire pile foundation is strong. And during the construction process, the pile forming operation is highly efficient by the bearing frame 10, the lifting mechanism 12, the moving frame 20, the rotating ring 30, the main drill 50 and the auxiliary drill 60.

[0069] Please refer to Figure 6 and Figure 7, as a specific implementation of the pile forming method for coal construction provided by the present invention, in step S3, an enlarged hole 74 is formed by expanding the bottom of the second pile hole 73, and the diameter of the enlarged hole 74 is two to three times the diameter of the second pile hole 73; before hoisting the central column 92 by a crane in step S4, the enlarged hole 74 is pre-cast with concrete using a pouring hose, and the central column 92 is installed into the second pile hole 73 before the concrete in the enlarged hole 74 hardens; the lower end of the central column 92 enters the concrete in the enlarged hole 74, and the clamping assembly 16 acts on the central column 92 to make the center line of the central column 92 perpendicular to the horizontal plane; an enlarged hole 74 extending radially outward is formed at the bottom of the second pile hole 73, so that the bottom area of the main pile body 90 is larger and the stability is higher after pouring concrete into the second pile hole 73; at the same time, the central column 92 is added to the second pile hole 73 before the concrete hardens, so that the lower end of the central column 92 enters the interior of the concrete in the enlarged hole 74, making the connection between the central column 92 and the concrete more reliable.

[0070] Please refer to Figures 6 to 8 , the embodiment of the present invention also provides a pile structure, including a main pile body 90 and auxiliary pile bodies 94. The main pile body 90 is used to be arranged below the ground; the main pile body 90 includes a bottom casting body 91, a central column 92 and a cylindrical casting body 93. The lower end of the cylindrical casting body 93 is fixedly installed on the central column 92. The central column 92 is installed on the cylindrical casting body 93 and is fixedly connected to the bottom casting body 91; a plurality of extension parts for inserting into the soil are provided on the outer wall of the cylindrical casting body 93; the number of the auxiliary pile bodies 94 is multiple and they are arranged around the main pile body 90; the auxiliary pile bodies 94 are arranged side by side with the main pile body 90, and the lower ends of the auxiliary pile bodies 94 are connected to the bottom casting body 91.

[0071] For the pile structure provided by the present invention, compared with the prior art, by means of arranging a plurality of auxiliary pile bodies 94 around the main pile body 90, the bearing performance of the pile structure in the area to be formed into a pile is relatively high; and the strength of the central column 92 on the main pile body 90 is greater than that of the bottom casting body 91, the cylindrical casting body 93 and the auxiliary pile bodies 94, so that the main pile body 90 can bear a relatively high pressure, etc. And under the action of the auxiliary pile bodies 94, the acting force in the area to be formed into a pile can be effectively dispersed, and the safety is higher. In a construction area, a plurality of areas to be formed into piles are arranged, and a main pile body 90 and a plurality of auxiliary pile bodies 94 are arranged in each area to be formed into a pile.

[0072] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pile-forming device for coal construction, characterized in that, Including: A bearing frame, installed on the construction area; an avoidance hole is formed on the bearing frame, a lifting mechanism is arranged on the bearing frame, and the lifting mechanism is arranged at an interval from the avoidance hole; A moving frame, installed on the lifting mechanism and having the freedom of moving up and down; a long slot, a first annular groove and a second annular groove arranged around the long slot are formed on the moving frame, the first annular groove is formed on the upper end surface of the moving frame, the second annular groove is formed on the lower end surface of the moving frame, and the first annular groove and the second annular groove are vertically corresponding and communicated; the width of the first annular groove is greater than the width of the second annular groove; a clamping assembly is arranged on the moving frame on one side of the long slot; A rotating ring, installed in the first annular groove and rotatably connected with the moving frame; a transmission part is arranged on the rotating ring; A driving mechanism, installed on the moving frame and connected with the transmission part for driving the rotating ring to rotate; A main drilling rig, the upper end of which is installed in the long slot and slidably connected with the moving frame; an expanding mechanism is arranged on the drill pipe of the main drilling rig; A sub-drilling rig, the upper end of which is located in the second annular groove and fixedly connected with the lower end of the rotating ring; an expanding mechanism is arranged on the drill pipe of the sub-drilling rig; A pushing and pulling mechanism, installed on the moving frame and connected with the main drilling rig for driving the main drilling rig to avoid the central position of the long slot; The moving frame includes: An outer frame, connected with the lifting mechanism; the inner wall of the outer frame has a stepped surface; An inner block, installed on the inner wall of the outer frame, and a receiving space is arranged between the outer wall of the inner block and the inner wall of the outer frame; the outer wall of the inner block has a stepped surface, and the receiving space forms the first annular groove and the second annular groove arranged up and down; the long slot is formed on the inner block; A connecting rod, installed above the outer frame and the inner block; the connecting rod is in an inverted U shape, and the two ends are respectively fixedly connected to the upper end surface of the outer frame and the upper end surface of the inner block; An installation groove communicated with the first annular groove is arranged on the inner wall of the outer frame, and a communication hole extending downward and communicated with the installation groove is arranged on the upper end surface; the driving mechanism includes a transmission gear and a driving motor, the transmission gear is installed in the installation groove and rotatably connected with the outer frame; the driving motor is installed on the upper end of the outer frame, and the output shaft of the driving motor passes through the communication hole and is connected with the transmission gear; the transmission part is a tooth structure meshed with the transmission gear; Two receiving grooves are formed on the inner block on the inner wall of the long slot, and the receiving grooves correspond to the center of the long slot, and the two receiving grooves are symmetrically arranged; two fixing mechanisms are respectively installed in the receiving grooves on the inner block, the fixing mechanism includes a driving component and a hoop, the driving component is fixedly installed in the receiving groove, the hoop is slidably connected in the receiving groove, and one end is fixedly connected to the free end of the driving component; the other end of the hoop is provided with an arc groove adapted to the outer wall of the main drilling rig; The upper end of the moving frame is provided with a guiding groove located on one side of the long strip hole, and a guiding block slidably connected with the guiding groove is arranged on the main drilling rig; a supporting plate is arranged on the moving frame above the first annular groove, the pushing and pulling mechanism is installed on the supporting plate, a first connecting piece is arranged at the free end of the pushing and pulling mechanism, and a second connecting piece detachably connected with the first connecting piece is arranged on the main drilling rig; The outward expansion mechanism includes a sliding block, a fixed block, a first rotating rod, a second rotating rod, a driver and a blocking sleeve; working cavities are formed in the drill pipes of both the main drilling rig and the auxiliary drilling rig, and inlets and outlets communicated with the working cavities are formed on the outer walls. The sliding block, the first rotating rod, the second rotating rod and the driver are all installed in the working cavities, and the first rotating rod and the second rotating rod correspond to the inlets and outlets; the driver and the sliding block are located above the inlets and outlets, and the fixed block is located below the inlets and outlets; the first rotating rod and the second rotating rod are arranged vertically, and the first rotating rod and the second rotating rod are hinged. The upper end of the first rotating rod is hinged with the sliding block, and the lower end of the second rotating rod is hinged with the fixed block; a sliding groove is formed at the top of the inlet and outlet, and the blocking sleeve is installed in the sliding groove and has the freedom to move up and down in the sliding groove. The blocking sleeve is used for blocking the inlet and outlet.

2. The pile-forming equipment for coal construction as described in claim 1, characterized in that, The bearing frame includes a main frame, traveling wheels installed on the rear side of the main frame and hydraulic legs installed on the front side of the main frame. The lifting mechanism is installed on the main frame. The avoidance hole is formed in the main frame and is located between the traveling wheels and the hydraulic legs; a connecting end for connecting with a power machine is further arranged on the front side of the main frame.

3. A pile-forming method for coal construction, characterized in that, It includes the coal construction pile-forming equipment according to any one of claims 1-2, and further includes: S1: Drive the bearing frame to move above the construction area, and the avoidance hole corresponds to the area to be pile-formed up and down; S2: Start the lifting mechanism to control the moving frame to move upward, and install an auxiliary drilling rig on the moving frame respectively. The upper end of the auxiliary drilling rig is located in the second annular groove and is connected with the rotating ring; start the lifting mechanism, the auxiliary drilling rig and the outward expansion mechanism to drill holes in the area to be pile-formed and form a first pile hole, and control the rotating ring to rotate on the moving frame through starting the driving mechanism to form a plurality of first pile holes arranged in a ring shape; S3: Install the main drilling rig on the moving frame, and the upper end of the main drilling rig penetrates into the long strip hole, and the main drilling rig is slidably connected with the moving frame; disassemble the auxiliary drilling rig and install a pouring hose at the lower end of the rotating ring. The pouring hose is used for pouring concrete into the first pile hole; start the lifting mechanism, the main drilling rig and the outward expansion mechanism to drill holes in the area to be pile-formed and form a second pile hole; at the same time, the pouring hose pours concrete into the first pile hole; S4: Activate the pushing and pulling mechanism to drive the main drilling rig to move in the long hole, so that the main drilling rig and the second pile hole are staggered; and use a crane to hoist the central column from top to bottom into the long hole, and use the clamping assembly to clamp onto the central column; activate the lifting mechanism to drive the central column into the second pile hole; the outer diameter of the central column is smaller than the inner diameter of the second pile hole; S5: Control the pouring hose to penetrate downward from the long hole and pour concrete into the space between the second pile hole and the central column.

4. The pile-forming method for coal construction according to claim 3, characterized in that, In step S3, an enlarged hole is formed by expanding at the bottom of the second pile hole, and the diameter of the enlarged hole is two to three times the diameter of the second pile hole; before using the crane to hoist the central column in step S4, use the pouring hose to pre-pour concrete into the enlarged hole, and install the central column into the second pile hole before the concrete in the enlarged hole hardens; the lower end of the central column enters the concrete in the enlarged hole, and the clamping assembly acts on the central column to make the center line of the central column perpendicular to the horizontal plane.

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