An auger drilling and unloading apparatus and method

Abstract

The application discloses a screw drilling and discharging device and method, and belongs to the technical field of hardening material discharging devices. The device comprises an operation platform, a fixed frame arranged on the operation platform, a movable frame arranged on the top of the fixed frame and capable of sliding on the fixed frame, an electric rope winding device, a motor and a speed reducer, wherein the electric rope winding device, the motor and the speed reducer are all arranged on the base of the movable frame, and the movable frame is slid to the top of a material cylinder through a sliding rail. In the whole discharging process, a construction worker only needs to control the control buttons of the electric rope winding device and the motor and connect a lengthened rod, and the rest links are automatically completed by the discharging device, so that the discharging time is greatly shortened, the labor intensity is reduced, and the device is simple in structure and convenient to operate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of board material unloading device, in particular to a spiral drilling unloading device and method. BACKGROUND

[0002] In the supercritical fluid extraction process, the material in the basket is extracted under pressure in the extraction kettle. Due to the high pressure extrusion of the material, the originally fluffy material is gradually compacted, and even serious compaction occurs. After extraction, the basket needs to be lifted out of the extraction kettle for unloading. The compacted material is difficult to slide out of the basket. Currently, at least two experienced construction personnel are required to assist in unloading the basket at the bottom of the basket. The requirement for on-site construction personnel is high, and any negligence may cause the material to suddenly slide and injure the construction personnel, posing a great safety hazard.

[0003] In order to solve the above technical problems, the applicant has developed an extraction basket unloading device, and applied for a Chinese patent (authorized announcement number CN218280637U) on September 14, 2022. The device includes a frame, a basket is vertically installed on the frame, an artificial unloading platform is provided on the upper part of the frame, a ladder is provided on one side of the frame for construction personnel to reach the artificial unloading platform, and an unloading mechanism is installed at the bottom of the frame for controlling the opening or closing of the bottom discharge port of the basket. By operating the winch and standing on the artificial unloading platform, the construction personnel can effectively avoid the sudden sliding of the material during unloading, improve the safety factor of artificial unloading, and ensure the safety of the construction personnel. The above-mentioned device in the unloading process, the construction personnel will shovel into the barrel, from top to bottom, shovel the compacted material little by little, and the material will fall freely. In the process of shoveling, it is easy to cause the shovel to be damaged to the inner wall of the barrel.

[0004] At the same time, the above-mentioned device also provides a high-frequency vibration air hammer installed on the frame to knock the barrel wall at high frequency, which can shake the material inside the basket and automatically fall off from the inside of the basket. Since the vibration air hammer acts on the barrel, it does not directly act on the compacted material, and the penetration of the vibration air hammer is limited. Generally, it is only effective for the material with a thickness of less than 50mm compacted on the inner wall of the barrel. The thickness here refers to the distance between the inner wall of the barrel and the inner diameter of the annular material compacted on the inner wall. For compacted materials with a thickness of more than 50mm, it is impossible to make them loose and fall off, and the use place is greatly limited. SUMMARY

[0005] The screw drilling unloading device and method can quickly unload the hard material with a thickness of more than 50 mm without damaging the inner wall of the material cylinder, and has the advantages of simple structure, convenient operation and high unloading efficiency.

[0006] To achieve the above object, the present application adopts the following technical scheme: a screw drilling unloading device, comprising an operation platform, a fixed frame is arranged on the operation platform, a movable frame which can slide on the fixed frame is arranged on the top of the fixed frame;

[0007] A base is arranged on the bottom of the movable frame, an electric rope reel, a motor and a speed reducer connected with the motor are arranged on the base, and the motor is interlocked with the electric rope reel;

[0008] A fixed pulley is arranged on the top of the movable frame, a movable pulley which can move up and down is arranged above the speed reducer, a steel wire rope on the electric rope reel is fixed on the top of the movable frame in sequence through the fixed pulley and the movable pulley, and a square driving rod connected with the movable pulley is arranged below the movable pulley;

[0009] A vertical through hole penetrating through the speed reducer is arranged on the speed reducer, the driving rod penetrates through the vertical through hole, the bottom of the driving rod is connected with the top of an extended rod below, the bottom of the extended rod is connected with a screw drilling tool, and the driving rod rotates under the action of the speed reducer;

[0010] The screw drilling tool is arranged at the center position of the material cylinder during drilling operation, and the maximum outer diameter of the screw drilling tool is 50 mm to 90 mm smaller than the diameter of the inner wall of the material cylinder.

[0011] As an improvement of the present application, the screw drilling tool comprises a rotating shaft and a spiral blade connected with the rotating shaft, the spiral blade has a lower conical structure, and the outer edge of the blade is serrated.

[0012] As an improvement of the present application, the material cylinder is mounted on a material cylinder support, and a vibrating air hammer for knocking the outer wall of the material cylinder is arranged on the material cylinder support.

[0013] As an improvement of the present application, the length of the extended rod is smaller than the distance between the top surface of the material cylinder and the bottom surface of the base of the movable frame, and the number of the extended rods is determined according to the height of the material cylinder.

[0014] As an improvement of the present application, an anti-twist mechanism for preventing the movable pulley from rotating is arranged between the driving rod and the movable pulley;

[0015] The anti-twist mechanism comprises an upper end cover, a bearing, a bearing sleeve, a rotating shaft and a lower end cover, the bearing sleeve is arranged on the rotating shaft, the upper end cover is threadedly connected with the bearing sleeve, and the lower end cover is threadedly connected with the rotating shaft.

[0016] The top of the upper end cover is provided with an ear plate, the movable pulley is provided with a connecting hole matched with the ear plate, and the bottom of the rotating shaft is connected with the driving rod through the combination of a pin shaft and a shaft sleeve.

[0017] As an improvement of the application, the driving rod, the lengthening rod and the auger are connected through the combination of a pin shaft and a shaft sleeve.

[0018] As an improvement of the application, the top and the bottom of the speed reducer are respectively provided with a guide core mechanism for quickly guiding the driving rod into the vertical through hole.

[0019] The guide core mechanism comprises a core seat and a guide wheel installed on the core seat, and the guide wheels are uniformly distributed on the core seat in the circumferential direction.

[0020] A discharging method using the above auger discharging device, specifically comprising the following steps:

[0021] 1) sliding the moving frame to the top of the material cylinder, and quickly installing the auger on the driving rod through the combination of a pin shaft and a shaft sleeve;

[0022] 2) controlling the motor to move, the electric rope reel is in a natural rope unwinding state, the speed reducer drives the driving rod to rotate under the driving of the motor, and the auger is driven downward by the driving rod;

[0023] 3) when the drilling distance reaches the length of the lengthening rod, the drilling is stopped, the connecting pin between the auger and the driving rod is removed, the electric rope reel is reeled, the driving rod is lifted back to the original position, the lengthening rod is connected, and then the drilling is continued, and the operation is repeated until the auger discharges the material;

[0024] 4) after the material is discharged, the motor is stopped, the electric rope reel is reeled, the driving rod, the lengthening rod and the auger are lifted upward, the lengthening rod is removed when the length of the lengthening rod is reached, and then the lifting is continued until the auger is completely lifted out of the material cylinder;

[0025] 5) sliding the moving frame to the next discharging position, and ending the discharging stage.

[0026] As an improvement of the application, the length of the lengthening rod is smaller than the distance between the top surface of the material cylinder and the bottom surface of the moving frame base, and the number is determined by the height of the material cylinder.

[0027] The application has the following advantages:

[0028] The application has simple structure and convenient operation. The fixed frame and the movable frame are both frame structures, the electric rope reel, the motor and the speed reducer are all installed on the base of the movable frame, and the movable frame is slid to the top of the material cylinder through the slide rail. During drilling, the motor is in working state, the driving rod drives the movable pulley to move downward, and the electric rope reel is in natural rope releasing state; after the material is unloaded, the motor is stopped, the electric rope reel is started to reel in the rope, the driving rod, the extension rod and the auger drilling part are lifted upward, the extension rod is removed when the length of the extension rod is reached, and then the lifting is continued until the auger drilling part is completely lifted out of the material cylinder. The pulley block composed of the fixed pulley and the movable pulley can realize quick lifting of the device, quick disassembly and reeling in of the rope by using the electric rope reel with small power. Meanwhile, the height of the whole device is greatly reduced by connecting the extension rod between the driving rod and the auger drilling part, and the application place of the device is expanded. During the whole unloading process, the construction personnel only need to control the control buttons of the electric rope reel and the motor and connect the extension rod, and the rest links are all automatically completed by the unloading device, so that the unloading time is greatly shortened, the labor intensity is reduced, the structure is simple and the operation is convenient.

[0029] By using the driving rod with square cross section, compared with the existing rotating shaft with cylindrical cross section, the structure is simple, the processing is convenient and the cost is low. During drilling, the driving rod moves downward while rotating. If the existing rotating shaft with cylindrical cross section is used, in addition to the key groove penetrating through the whole rotating shaft, a matching key groove needs to be formed in the vertical through hole of the speed reducer, and the driving rod needs to be cooperated with the key to move downward while rotating, so that the structure is extremely complex, the manufacturing process is complicated and the processing cost is high.

[0030] In order to ensure that the more hardened materials are unloaded without damaging the inner wall of the material cylinder, the maximum outer diameter of the blade of the auger drilling part is designed to be 50mm-90mm smaller than the diameter of the inner wall of the material cylinder. If the above value is too small, the inner wall of the material cylinder is easily scratched during the whole unloading process, and if the value is too large, a large amount of materials will be attached to the inner wall of the material cylinder. In the application, the maximum outer diameter of the blade of the auger drilling part is taken as 50mm-90mm smaller than the diameter of the inner wall of the material cylinder, so that the materials can be quickly unloaded without damaging the inner wall of the material cylinder.

[0031] The auger drilling part, the spiral blade is in lower conical structure, and the outer edge of the blade is serrated. The design can accelerate the drilling speed. The hardened materials are drilled, cut and scattered by the spiral blade, and then freely fall to complete the unloading work. If there are still hardened materials on the inner wall of the material cylinder after the unloading work of the auger drilling part is completed, the materials can be easily unloaded by controlling the vibration air hammer.

[0032] The anti-twist mechanism arranged between the driving rod and the movable pulley can effectively prevent the steel wire rope from winding the movable pulley due to the rotation of the movable pulley driven by the driving rod. In addition, the top of the anti-twist mechanism is connected with the movable pulley through the connecting hole and the pin shaft, and the bottom of the anti-twist mechanism is connected with the driving rod through the combination of the pin shaft and the shaft sleeve, so that the anti-twist mechanism can be quickly assembled and disassembled.

[0033] The driving rod, the lengthening rod and the screw drilling part are connected through the combination of the pin shaft and the shaft sleeve, so that the driving rod, the lengthening rod and the screw drilling part can be quickly assembled and disassembled, and the work efficiency of unloading is greatly improved.

[0034] The guide core mechanism is arranged at the top and the bottom of the speed reducer to quickly guide the driving rod into the vertical through hole. The guide core mechanism has two main effects. The first effect is that the driving rod can be quickly guided into the speed reducer, and the installation efficiency is improved. The second effect is that the driving rod acts on the guide core mechanism during the unloading process, so as to reduce the damage of the driving rod to the speed reducer, protect the core of the speed reducer, and prolong the service life of the speed reducer.

[0035] The application also provides an unloading method using the screw drilling unloading device. Since the screw drilling unloading device is used, the unloading method also has corresponding beneficial effects, and specific reference can be made to the foregoing description. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 Fig. 6 is a structural schematic view of the screw blade of the application when the screw blade is rotated to the bottom of the barrel;

[0037] Figure 2 Fig. 7 is a structural schematic view of the screw blade of the application when the screw blade is not rotated to the barrel;

[0038] Figure 3 Fig. 8 is a structural schematic view of the anti-twist mechanism of the application installed on the movable pulley;

[0039] Figure 4 Fig. 9 is a structural schematic view of the guide core mechanism of the application installed on the speed reducer;

[0040] Figure 5 Fig. 10 is a structural schematic view of the guide core mechanism of the application;

[0041] Figure 6 Fig. 11 is a structural schematic view of the guide core mechanism of the application; Figure 4 Fig. 12 is a three-dimensional structural schematic view of the guide core mechanism of the application.

[0042] In the figure, 1, auger; 2, extension rod; 3, operation platform; 4, fixed frame; 5, electric rope winding device; 6, moving frame; 7, steel wire rope; 8, fixed pulley; 81, connecting hole; 9, movable pulley; 10, anti-twist mechanism; 101, ear plate; 102, upper end cover; 103, bearing sleeve; 104, bearing; 105, lower end cover; 106, rotating shaft; 11, speed reducer; 12, motor; 13, base; 14, driving rod; 15, barrel; 16, barrel support; 17, core supplement seat; 171, groove; 172, protrusion; 173, connecting hole; 18, guide wheel; 19, connecting shaft. DETAILED DESCRIPTION

[0043] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are for the purpose of explanation only, and should not be construed as limiting the present application.

[0044] It should be noted that the up, down, inside, outside, top, bottom and other orientation terms in the embodiments of the present application are only relative concepts or are referenced to the normal use state of the product, and should not be considered as limiting.

[0045] As Figure 1 and Figure 2As shown, a screw drilling and unloading device comprises an operating platform 3, the operating platform 3 is provided with a fixed frame 4, the top of the fixed frame 4 is provided with a movable frame 6 which can slide on the fixed frame 4, the top of the fixed frame 4 and the movable frame 6 are slidably connected by using existing slide rail and slide block combination and the like, which is a mature technology and will not be described in detail here. The bottom of the movable frame 6 is provided with a base 13, the base 13 is provided with an electric rope reel 5, a motor 12 and a speed reducer 11 connected with the motor 12, the motor 12 is interlocked with the electric rope reel 5, preferably, the motor 12 and the speed reducer 11 adopt an integrated structure. The top of the movable frame 6 is provided with a fixed pulley 8, the upper portion of the speed reducer 11 is provided with a movable pulley 9 which moves up and down, a steel wire rope 7 on the electric rope reel 5 is fixed to the top of the movable frame 6 in sequence through the fixed pulley 8 and the movable pulley 9, the lower portion of the movable pulley 9 is provided with a square driving rod 14 connected therewith; a vertical through hole penetrating through the speed reducer 11 is formed in the speed reducer 11, the vertical through hole is a square hole matched with the driving rod 14, the center of the vertical through hole is opposite to the center of a barrel 15, the driving rod 14 penetrates through the vertical through hole, the bottom of the driving rod 14 is connected with the top of an extension rod 2 below, the bottom of the extension rod 2 is connected with a screw drilling tool 1, the driving rod 14 rotates under the action of the speed reducer 11. The screw drilling tool 1 is arranged at the center position of the barrel 15 during drilling operation, that is, during drilling operation, the axial center lines of the driving rod 14, the extension rod 2 and the screw drilling tool 1 coincide with the center line of the barrel 15, the barrel 15 is installed on a barrel support 16, the barrel support 16 is provided with a vibrating air hammer (not shown in the figure) for knocking the outer wall of the barrel 15. The screw drilling tool 1 comprises a rotating shaft and a spiral blade connected with the rotating shaft, the spiral blade is a lower conical structure, the outer edge of the blade is serrated, and the maximum outer diameter of the spiral blade is 50mm-90mm smaller than the diameter of the inner wall of the barrel.

[0046] The length of the extension rod 2 is smaller than the distance between the top surface of the barrel 15 and the bottom surface of the base 13 of the movable frame, and the number thereof is determined by the height of the barrel 15. This structural design not only ensures automatic drilling and lifting, but also greatly reduces the overall height of the device. Since the extension rod 2 needs to be connected during unloading, the length of the extension rod 2 must be designed to be smaller than the distance between the top surface of the barrel 15 and the bottom surface of the base 13 of the movable frame for the convenience of operation of the construction personnel and the rapid connection of the extension rod 2, and the extension rod 2 in the embodiment is two.

[0047] As Figure 3As shown, an anti-torsion mechanism 10 is provided between the drive rod 14 and the movable pulley 8 to prevent the movable pulley 8 from rotating. The anti-torsion mechanism 10 includes an upper end cover 102, a bearing 104, a bearing sleeve 103, a rotating shaft 106, and a lower end cover 105. The bearing 104 is sleeved on the rotating shaft 106. The outer surface of the upper end cover 102 is provided with an external thread. The upper inner wall of the bearing sleeve 103 is provided with an internal thread that matches the external thread of the upper end cover 102. The upper end cover 102 and the bearing sleeve 103 are threaded together. The inner surface of the lower end cover 105 is provided with an internal thread. The outer surface of the rotating shaft 106 at the corresponding position of the lower end cover is provided with an external thread that matches the internal thread of the lower end cover 105. The lower end cover 105 and the rotating shaft 106 are threaded together. The top of the upper end cover 102 is provided with an ear plate 101. The movable pulley 8 is provided with a connecting hole 81 that matches the ear plate 101. The bottom of the rotating shaft 106 is connected to the drive rod 14 by a combination of a pin and a bushing. The structure is simple and the assembly and disassembly are quick. During the entire unloading process, the rotating shaft 106 rotates with the drive rod 14 under the action of the bearing 104, while the ear plate 101, the upper end cover 102 and the bearing sleeve 103 do not rotate, thus preventing the moving pulley 8 from twisting.

[0048] The aforementioned drive rod 14, extension rod 2, and auger drilling component 1 are all connected by a combination of pins and bushings. By adopting the existing mature pin and bushing connection method, the structure is simple, the cost is low, and the disassembly and assembly are convenient, which improves the work efficiency of unloading.

[0049] like Figure 4 , Figure 5 and Figure 6 As shown, the top and bottom of the reducer 11 are respectively provided with guide core-filling mechanisms for quickly guiding the drive rod 14 into the vertical through hole. The guide core-filling mechanism includes a core-filling seat 17 and guide wheels 18 mounted on the core-filling seat 17. The guide wheels 18 are evenly distributed on the core-filling seat 17 in the circumferential direction. The core-filling seat 17 is connected to a rotating component with a vertical through hole inside the reducer (such as the turbine of a worm gear reducer) through a connecting hole 173 and rotates with it. In this embodiment, the specific connection method between the core-filling seat 17 and the aforementioned rotating component is not limited. The core-filling seat 17 has an inlet hole that matches the vertical through hole. The top of the core-filling seat 17 has grooves 171 and protrusions 172 that are spaced apart in the circumferential direction. The guide wheels 18 are connected to two adjacent protrusions 172 through a connecting shaft 19. The lower part of the guide wheels 18 is located in the groove 171. The number of the aforementioned guide wheels 18, grooves 171, and protrusions 172 are all four. Through the above structural design, the drive rod 14 can be quickly inserted into the reducer 11, improving installation efficiency. At the same time, during the unloading process, the entire drive rod 14 acts on the guide core-complementing mechanism to reduce the damage of the drive rod to the reducer 11, thus protecting the "core" of the reducer 11 and extending its service life.

[0050] A kind of unloading method using the above screw drilling unloading device, before unloading, first using the row of crane to be hung to the material cylinder support with the material cylinder, the upper and lower end caps of material cylinder are opened, then prepare to unload, below with the example of connecting two lengthening rods 2, unloading stage includes the following steps:

[0051] 1) slide the moving frame 6 to the material cylinder 15 directly above, the screw drilling piece 1 is quickly installed on the driving rod 14 by the combination of pin shaft and shaft sleeve;

[0052] 2) start the motor 12 movement, the electric rope reel 5 is in natural rope state (non-starting state), the speed reducer 11 drives the driving rod 14 to rotate under the drive of the motor 12, the screw drilling piece 1 is driven downward under the driving of the driving rod 14;

[0053] 3) when the drilling distance reaches the length of a lengthening rod 2, stop drilling, remove the connecting pin between the screw drilling piece 1 and the driving rod 14, the electric rope reel 5 retracts the rope, the driving rod 14 is lifted back to the original position, after connecting a lengthening rod 2, then continue to drill; when the drilling distance reaches the length of a lengthening rod 2 again, stop drilling, connect the second lengthening rod 2, and the operation is repeated in this way until the screw drilling piece 1 finishes unloading the material;

[0054] 4) after the material is unloaded, stop the motor 12, start the electric rope reel 5 to retract the rope, lift the driving rod 14, the lengthening rod 2 and the screw drilling piece 1 upward, when the length of the lengthening rod 2 is reached, remove the lengthening rod 2, and then continue to lift until the screw drilling piece 1 is completely lifted out of the material cylinder 15;

[0055] 5) slide the moving frame 6 to the next unloading position, and the unloading stage ends.

[0056] After the unloading stage ends, the upper and lower end caps of the material cylinder 15 are restored and installed tightly, the material cylinder 15 is lifted out of the unloading position by using the row of crane, and the whole unloading operation is completed. It should be noted that if there is still a small amount of material attached to the inner wall of the material cylinder 15 after the unloading stage ends, the whole material can be unloaded by installing a vibrating air hammer on the material cylinder support 16 to knock the outer wall of the material cylinder 15.

[0057] The above is a detailed introduction to the screw drilling unloading device and method provided by the present application, specific examples are applied in this paper to explain the structure principle and implementation mode of the present application, and the above examples are only used to help understand the method and core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description should not be understood as a limitation of the present application.

Claims

1. A screw drilling and unloading device comprising an operating platform, characterized in that: The operation platform is provided with a fixed frame, and the top of the fixed frame is provided with a movable frame which can slide on the fixed frame; The bottom of the movable frame is provided with a base, and the base is provided with an electric reel, a motor and a speed reducer connected with the motor, and the motor is interlocked with the electric reel; The top of the movable frame is provided with a fixed pulley, and the upper side of the speed reducer is provided with a movable pulley which moves up and down, and the steel wire rope on the electric reel passes through the fixed pulley and the movable pulley and is fixed on the top of the movable frame, and the lower side of the movable pulley is provided with a square driving rod connected therewith; A vertical through hole is formed in the speed reducer, the driving rod passes through the vertical through hole, the bottom of the driving rod is connected with the top of the lengthened rod, the bottom of the lengthened rod is connected with the spiral drilling piece, and the driving rod rotates under the action of the speed reducer; The spiral drilling piece is arranged at the center position of the barrel during drilling operation, and the maximum outer diameter of the spiral drilling piece is 50mm-90mm smaller than the diameter of the inner wall of the barrel.

2. A screw discharging apparatus according to claim 1, wherein: The spiral drilling piece comprises a rotating shaft and a spiral blade connected with the rotating shaft, and the spiral blade is in a lower conical structure, and the outer edge of the blade is serrated.

3. A screw discharging apparatus according to claim 1, wherein: The barrel is mounted on a barrel support, and the barrel support is provided with a vibrating air hammer for knocking the outer wall of the barrel.

4. An auger unloading apparatus according to claim 1, wherein: The length of the lengthened rod is smaller than the distance between the top surface of the barrel and the bottom surface of the bottom of the movable frame, and the number of the lengthened rods is determined according to the height of the barrel.

5. An auger unloading apparatus according to claim 1, wherein: A twist prevention mechanism is arranged between the driving rod and the movable pulley for preventing the rotation of the movable pulley; The twist prevention mechanism comprises an upper end cover, a bearing, a bearing sleeve, a rotating shaft and a lower end cover, the bearing sleeve is arranged on the rotating shaft, the upper end cover is threadedly connected with the bearing sleeve, and the lower end cover is threadedly connected with the rotating shaft; The top of the upper end cover is provided with an ear plate, the movable pulley is provided with a connecting hole matched with the ear plate, and the bottom of the rotating shaft is connected with the driving rod through the combination of a pin shaft and a shaft sleeve.

6. An auger unloading apparatus according to claim 1, wherein: The driving rod, the lengthened rod and the spiral drilling piece are connected through the combination of a pin shaft and a shaft sleeve.

7. An auger unloading apparatus according to claim 1, wherein: The top and the bottom of the speed reducer are respectively provided with a guide core mechanism for quickly guiding the driving rod into the vertical through hole; The guide core mechanism comprises a core seat and guide wheels mounted on the core seat, and the guide wheels are uniformly distributed on the core seat in the circumferential direction.

8. A method of unloading using the auger unloading apparatus according to any one of claims 1 to 7, characterized by, Specifically comprising the following steps: 1) sliding the movable frame to the top of the barrel, and quickly mounting the spiral drilling piece on the driving rod through the combination of a pin shaft and a shaft sleeve; 2) starting the motor to move, the electric reel is in a natural rope releasing state, the speed reducer drives the driving rod to rotate under the drive of the motor, and the spiral drilling piece is driven downward by the driving rod; 3) when the drilling distance reaches the length of the lengthened rod, stop drilling, remove the connecting pin between the spiral drilling piece and the driving rod, collect the rope of the electric reel, lift the driving rod back to the original position, connect the lengthened rod, and then continue drilling, and the operation is repeated until the spiral drilling piece finishes discharging the material; 4) after the material is discharged, stop the motor, start the electric reel to collect the rope, lift the driving rod, the lengthened rod and the spiral drilling piece upward, remove the lengthened rod when the length reaches the length of the lengthened rod, and then continue to lift until the spiral drilling piece is completely lifted out of the barrel; 5) sliding the movable frame to the next discharging position, and the discharging stage is completed.

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