Gas explosion spiral drilling machine

Abstract

The invention provides a gas explosion spiral drilling machine. The gas explosion spiral drilling machine comprises a walking chassis, a fixed support, a lifting support, a drilling rod, a driving assembly, a liquid storage tank, a high-pressure gas source assembly and a fluid switching pipeline assembly. The drill rod is of a hollow structure and is rotationally assembled on the lifting support in the vertical direction, a drill bit is arranged at the bottom of the drill rod, and jet holes are formed in the side wall, close to the drill bit, of the drill rod and used for releasing high-pressure gas or liquid pesticide and fertilizer outwards. The driving assembly is used for synchronously outputting rotating power to drive the drill rod to rotate around the axis of the drill rod and outputting lifting power to drive the lifting support to move in the vertical direction. According to the gas explosion spiral drilling machine, a traditional hydraulic driving system is abandoned, the equipment structure is greatly simplified, and the overall energy consumption of equipment is reduced. Meanwhile, high-pressure gas explosion soil loosening and liquid medicine fertilization operation can be completed after drilling, fertilization equipment does not need to be additionally allocated, the operation process is shortened, and the operation cost is reduced. In addition, the terrain adaptability is high, and the outdoor operation requirement can be met.

Description

Technical Field

[0001] This invention relates to the field of agricultural equipment technology, specifically to a pneumatic auger drilling machine. Background Technology

[0002] In agricultural production and ecological restoration, soil loosening and fertilization are fundamental operational steps. Existing pneumatic drilling equipment generally employs a hydraulically driven, direct-insertion drill bit structure. This type of equipment has several inherent drawbacks: First, the hydraulic drive system has a complex structure and numerous parts, resulting in high manufacturing costs and difficult and expensive maintenance. Second, the hydraulic drive mode consumes extremely high energy, leading to significant energy waste during operation. Third, the equipment is heavy, making it difficult to operate stably on complex terrains such as slopes and hills, resulting in poor adaptability. Fourth, its function is limited, only capable of drilling and pneumatic blasting, unable to simultaneously perform soil loosening and fertilization after drilling, leading to cumbersome and inefficient operations, increasing farmers' operating costs and labor intensity. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the purpose of this invention is to provide a gas-explosion spiral drilling machine to solve or at least alleviate one or more of the above-mentioned technical problems or other problems existing in the prior art.

[0004] To achieve the above objectives, the present invention provides a gas-explosion spiral drilling machine, comprising: a traveling chassis; a fixed support mounted on the traveling chassis; a lifting support slidably mounted vertically within the fixed support, the lifting support being constrained to only be able to rise and fall and not rotate; a hollow drill rod rotatably mounted vertically on the lifting support, the bottom of the drill rod having a drill bit, and the side wall of the drill rod near the drill bit having an injection hole; a drive assembly for synchronously outputting rotational power to drive the drill rod to rotate around its own axis, and outputting lifting power to drive the lifting support to move vertically; a liquid storage tank connected to the drill rod for storing liquid pesticides or fertilizers; a high-pressure gas source assembly connected to the drill rod for generating and releasing short-term high-pressure gas to implement soil gas explosion; and a fluid switching pipeline assembly for sequentially introducing the high-pressure gas from the high-pressure gas source assembly or the liquid from the liquid storage tank into the drill rod, and releasing it to the soil surrounding the borehole through the injection hole.

[0005] Preferably, the drive assembly includes: a bushing, sleeved on the outside of the drill rod and rotatably mounted on the lifting bracket; a reduction motor, mounted on the lifting bracket, for driving the bushing to rotate; a first gear, sleeved on the outside of the bushing; a lead screw, vertically mounted inside the fixed bracket, the lead screw being constrained to not rotate; a nut, rotatably mounted on the lifting bracket and forming a helical pair with the lead screw; and a second gear, sleeved on the outside of the nut and meshing with the first gear.

[0006] Preferably, the fixed bracket has two parallel guide columns arranged on both sides of the lead screw; the lifting bracket has two linear guide sleeves, each of which is slidably fitted onto the corresponding guide column.

[0007] Preferably, the drill rod is provided with an axial limiting flange, a return spring and an orifice plug in sequence from top to bottom. The axial limiting flange is fixedly connected to the outer wall of the drill rod, the orifice plug is slidably fitted on the outer periphery of the drill rod, and the two ends of the return spring abut against the axial limiting flange and the orifice plug respectively.

[0008] Preferably, the fixed bracket is covered with a protective cover.

[0009] Preferably, an upper travel limit switch and a lower travel limit switch are installed at vertical intervals along the inner edge of the fixed bracket.

[0010] Preferably, a vacuum conveyor is provided at the outlet of the liquid storage tank, and the fluid switching pipeline assembly includes a rotary joint, a first pipe body, a first tee joint, a second pipe body, a third pipe body, a second tee joint, a fourth pipe body, a fifth pipe body, an explosion control solenoid valve, and a liquid push solenoid valve;

[0011] The rotary joint is located at the top of the drill pipe. The first tube body is connected to the first interface of the rotary joint and the first interface of the first tee joint. The second tube body is connected to the second interface of the first tee joint and the vacuum conveyor. The third tube body is connected to the third interface of the first tee joint and the first interface of the second tee joint.

[0012] The fourth pipe is connected to the outlet of the high-pressure gas source assembly and the second interface of the second three-way connector, and the fifth pipe is connected to the third interface of the second three-way connector and the vacuum conveyor; the gas explosion control solenoid valve is located on the third pipe, and the liquid medicine pushing solenoid valve is located on the fifth pipe.

[0013] The beneficial effects of this invention are:

[0014] This invention discloses a pneumatic auger drilling machine that replaces traditional hydraulic direct-insertion drilling with auger drilling, significantly reducing soil resistance during drilling, improving drilling efficiency, reducing equipment wear, extending drill bit life, and lowering energy consumption. Simultaneously, it integrates a high-pressure gas source component and a liquid storage tank, and achieves orderly switching and delivery of high-pressure gas and chemical solution through a fluid switching pipeline component. This allows the pneumatic auger drilling machine to complete drilling, pneumatic loosening, and fertilization in the same operation, realizing integrated loosening and fertilization, greatly improving work efficiency and solving the problem of single-function traditional equipment.

[0015] In summary, this air-blast auger drilling machine eliminates the traditional hydraulic drive system, significantly simplifying the equipment structure and reducing overall energy consumption. Furthermore, it can perform high-pressure air-blast soil loosening and chemical fertilization after drilling, eliminating the need for additional fertilization equipment, shortening the operation process, and reducing operating costs. In addition, it has strong terrain adaptability and can meet the needs of outdoor operations. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a schematic diagram of the structure of a gas-explosive spiral drilling machine according to an embodiment of the present invention;

[0018] Figure 2 A schematic diagram showing the structure after partially concealing the protective casing;

[0019] Figure 3 This is a schematic diagram of the internal structure of the fixed bracket;

[0020] Figure 4 A side view of the lifting bracket fitting within the fixed bracket;

[0021] Figure 5 This is a schematic diagram of the drive component.

[0022] Figure 6 This is a schematic diagram of the drill pipe structure;

[0023] Figure 7 This is a schematic diagram of the drill bit structure;

[0024] Figure 8 A schematic diagram of the structure where the drill bit extends out from the bottom of the fixed support;

[0025] Figure 9A schematic diagram showing the installation of the upper and lower travel limit switches;

[0026] Figure 10 This is a schematic diagram of the structure of the fluid switching pipeline assembly;

[0027] Figure label:

[0028] 100. Walking chassis; 200. Fixed bracket; 201. Protective cover; 202. Upper travel limit switch; 203. Lower travel limit switch; 300. Lifting bracket; 400. Drill rod; 401. Drill bit; 402. Injection hole; 403. Axial limit flange; 404. Return spring; 405. Orifice plug; 500. Drive assembly; 501. Bushing; 502. Gear motor; 503. First gear; 504. Lead screw; 505. Nut; 506. 507. Gear 2; 508. Guide post; 509. Linear guide sleeve; 600. Liquid storage tank; 601. Vacuum conveyor; 700. High-pressure gas source assembly; 800. Fluid switching pipeline assembly; 801. Rotary joint; 802. First pipe body; 803. First tee joint; 804. Second pipe body; 805. Third pipe body; 806. Second tee joint; 807. Fourth pipe body; 808. Fifth pipe body; 809. Gas explosion control solenoid valve; 810. Liquid push solenoid valve. Detailed Implementation

[0029] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0030] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0031] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0032] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly defined.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] like Figure 1-10 As shown, in one embodiment of the present invention, a gas-explosive spiral drilling machine is provided, including a walking chassis 100, a fixed support 200, a lifting support 300, a drill rod 400, a drive assembly 500, a liquid storage tank 600, a high-pressure gas source assembly 700, and a fluid switching pipeline assembly 800. The walking chassis 100 is a tracked remote-controlled vehicle, capable of adapting to complex hilly terrain, and its walking power is provided by a 48V DC power supply. The fixed support 200 is fixedly installed at the front end of the walking chassis 100, and the lifting support 300 is slidably mounted vertically within the fixed support 200, constrained to only be able to rise and fall and not rotate. The drill rod 400 has a hollow structure and is rotatably mounted vertically on the lifting support 300. A drill bit 401 is provided at the bottom of the drill rod 400, and an injection hole 402 is opened on the side wall of the drill rod 400 near the drill bit 401. The injection hole 402 is used to release high-pressure gas or liquid pesticides or fertilizers.

[0036] The drive assembly 500 synchronously outputs rotational power to drive the drill rod 400 to rotate around its own axis, and outputs lifting power to drive the lifting support 300 to move vertically. The storage tank 600 stores liquid pesticides or fertilizers, and the high-pressure gas source assembly 700 generates and releases short-term high-pressure gas to implement soil gas explosion. The chassis 100 and the high-pressure gas source assembly 700 are prior art and will not be described further in this embodiment. The fluid switching pipeline assembly 800 sequentially introduces the high-pressure gas from the high-pressure gas source assembly 700 or the liquid from the storage tank 600 into the drill rod 400, and releases it to the soil surrounding the borehole via the injection hole 402.

[0037] This embodiment discloses a pneumatic auger drilling machine that uses auger drilling to replace traditional hydraulic direct-insertion drilling, significantly reducing soil resistance during drilling, improving drilling efficiency, reducing equipment wear, extending drill bit life, and lowering energy consumption. Simultaneously, it integrates a high-pressure gas source component 700 and a liquid storage tank 600, and achieves orderly switching and delivery of high-pressure gas and liquid chemicals through a fluid switching pipeline component 800. This allows the pneumatic auger drilling machine to complete drilling, pneumatic loosening, and fertilization in the same operation, realizing integrated loosening and fertilization, significantly improving work efficiency, and solving the problem of single-function traditional equipment.

[0038] In summary, this air-blast auger drilling machine eliminates the traditional hydraulic drive system, significantly simplifying the equipment structure and reducing overall energy consumption. Furthermore, it can perform high-pressure air-blast soil loosening and chemical fertilization after drilling, eliminating the need for additional fertilization equipment, shortening the operation process, and reducing operating costs. In addition, it has strong terrain adaptability and can meet the needs of outdoor operations.

[0039] In one embodiment, the drive assembly 500 includes a bushing 501, a geared motor 502, a first gear 503, a lead screw 504, a nut 505, and a second gear 506. The bushing 501 is fixedly sleeved on the outside of the drill pipe 400 and rotatably mounted on the lifting bracket 300 via bearings. The first gear 503 is fixedly sleeved on the outside of the bushing 501. The geared motor 502 is fixedly mounted on the lifting bracket 300 and drives the bushing 501 to rotate. The lead screw 504 is vertically disposed within the fixed bracket 200 and is constrained to prevent rotation. The nut 505 is also rotatably mounted on the lifting bracket 300 via bearings, and the nut 505 and the lead screw 504 form a helical pair. The second gear 506 is fixedly sleeved on the outside of the nut 505 and meshes with the first gear 503.

[0040] The drive assembly 500, through the transmission and engagement of bushing 501, first gear 503, second gear 506, lead screw 504, and nut 505, can simultaneously achieve the rotation of drill rod 400 and the lifting of lifting support 300. Compared to the multi-power source structure of traditional hydraulic drives, this significantly simplifies the equipment's transmission system and reduces the overall complexity of the equipment. The combination of gear transmission and lead screw 504 / nut 505 transmission results in higher power transmission efficiency and lower energy loss, further solving the problem of high energy consumption in existing equipment. Simultaneously, the helical pair of lead screw 504 and nut 505 provides excellent transmission stability and positional accuracy, enabling precise control of the lifting height of lifting support 300, thereby controlling drilling depth and improving operational precision.

[0041] Furthermore, the fixed bracket 200 is equipped with two parallel guide posts 507, which are arranged on both sides of the lead screw 504. The lifting bracket 300 is equipped with two linear guide sleeves 508, each slidably fitted onto its corresponding guide post 507. The sliding engagement between the guide posts 507 and the linear guide sleeves 508 further strengthens the guiding constraint of the lifting bracket 300, preventing rotational deviation during lifting and ensuring that the drill rod 400 always maintains a vertical drilling posture, thus improving the verticality and operational accuracy of the borehole. Simultaneously, the symmetrical arrangement of the two guide posts 507 can distribute the load on the lifting bracket 300, avoiding component deformation caused by force on one side and extending the service life of the equipment.

[0042] In one embodiment, the drill rod 400 is sequentially fitted with an axial limiting flange 403, a return spring 404, and a borehole plug 405 from top to bottom. The axial limiting flange 403 is fixedly connected to the outer wall of the drill rod 400, and the borehole plug 405 is slidably fitted onto the outer circumference of the drill rod 400. The two ends of the return spring 404 abut against the axial limiting flange 403 and the borehole plug 405, respectively. During drilling, the borehole plug 405 can seal the borehole under the elastic force of the return spring 404, thereby reducing gas leakage and chemical leakage in the event of a gas explosion. When the drill rod 400 completes drilling and is lifted, the return spring 404 pushes the borehole plug 405 back to its initial position.

[0043] In one embodiment, the fixed bracket 200 is covered with a protective cover 201. The protective cover 201 can effectively prevent soil particles, gravel, weeds and other debris generated during the operation from entering the fixed bracket 200, thereby effectively protecting the internal transmission and guiding components such as the lead screw 504, guide column 507, and first gear 503, reducing the wear and failure rate of the components, and extending the maintenance cycle and overall service life of the equipment.

[0044] In one embodiment, an upper travel limit switch 202 and a lower travel limit switch 203 are installed vertically at intervals inside the fixed bracket 200. This structural design can precisely limit the lifting stroke range of the lifting bracket 300, preventing the lifting bracket 300 from colliding hard with the fixed bracket 200 due to overtravel, and also avoiding component damage caused by excessive drilling rod 400 entering the soil or excessive lifting. This provides dual protection for the safe operation of the equipment and reduces the equipment failure rate and maintenance costs.

[0045] In one embodiment, a vacuum conveyor 601 is provided at the outlet of the liquid storage tank 600, and the fluid switching pipeline assembly 800 includes a rotary joint 801, a first pipe body 802, a first tee joint 803, a second pipe body 804, a third pipe body 805, a second tee joint 806, a fourth pipe body 807, a fifth pipe body 808, a gas explosion control solenoid valve 809, and a liquid delivery solenoid valve 810.

[0046] A rotary joint 801 is located at the top of the drill pipe 400. A first pipe body 802 connects to the first interface of the rotary joint 801 and the first interface of the first tee joint 803. A second pipe body 804 connects to the second interface of the first tee joint 803 and the vacuum conveyor 601. A third pipe body 805 connects to the third interface of the first tee joint 803 and the first interface of the second tee joint 806. A fourth pipe body 807 connects to the outlet of the high-pressure gas source assembly 700 and the second interface of the second tee joint 806. A fifth pipe body 808 connects to the third interface of the second tee joint 806 and the vacuum conveyor 601. A gas explosion control solenoid valve 809 is located on the third pipe body 805, and a liquid delivery solenoid valve 810 is located on the fifth pipe body 808.

[0047] By coordinating the opening and closing of the pneumatic blast control solenoid valve 809 and the liquid pesticide delivery solenoid valve 810, the switching between the high-pressure gas path and the liquid pesticide path can be precisely achieved, ensuring the orderly conduct of pneumatic blasting and liquid pesticide application operations. When the liquid pesticide delivery solenoid valve 810 is opened, the gas from the high-pressure gas source component 700 can directly enter the vacuum conveyor 601. Utilizing the negative pressure effect generated by the gas flow, the liquid pesticide or fertilizer in the storage tank 600 is quickly drawn into the vacuum conveyor 601 and uniformly mixed, resulting in a more uniform pesticide concentration and improving the effectiveness of fertilization or pesticide application. The rotary joint 801 solves the problem of pipe entanglement during the rotation of the drill rod 400, ensuring the continuity and stability of fluid delivery.

[0048] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A pneumatic auger drilling machine, characterized in that, include: Chassis (100); A fixed bracket (200) is mounted on the walking chassis (100); The lifting bracket (300) is slidably mounted vertically within the fixed bracket (200), and the lifting bracket (300) is constrained to only be able to lift and not rotate; A hollow drill rod (400) is vertically rotatably mounted on the lifting bracket (300). A drill bit (401) is provided at the bottom of the drill rod (400), and an injection hole (402) is provided on the side wall of the drill rod (400) near the drill bit (401). The drive assembly (500) is used to synchronously output rotational power to drive the drill rod (400) to rotate around its own axis, and to output lifting power to drive the lifting bracket (300) to move vertically; A liquid storage tank (600) connected to the drill pipe (400) is used to store liquid pesticides or fertilizers; A high-pressure gas source assembly (700) connected to the drill pipe (400) is used to generate and release short-term high-pressure gas to implement soil gas explosion; and A fluid switching pipeline assembly (800) is used to sequentially introduce high-pressure gas from the high-pressure gas source assembly (700) or liquid from the storage tank (600) into the drill rod (400) and release it to the soil around the borehole through the injection hole (402).

2. The air-explosion spiral drilling machine according to claim 1, characterized in that, The drive component (500) includes: A bushing (501) is sleeved on the outside of the drill rod (400) and rotatably mounted on the lifting bracket (300); A geared motor (502) is mounted on the lifting bracket (300) and is used to drive the bushing (501) to rotate; The first gear (503) is sleeved outside the bushing (501); A lead screw (504) is vertically disposed within the fixed bracket (200), and the lead screw (504) is constrained to prevent rotation; A nut (505) is rotatably mounted on the lifting bracket (300) and forms a helical pair with the lead screw (504); and The second gear (506) is sleeved on the outside of the nut (505) and meshes with the first gear (503).

3. The air-explosion spiral drilling machine according to claim 2, characterized in that, The fixed bracket (200) is provided with two parallel guide columns (507), which are arranged on both sides of the lead screw (504); the lifting bracket (300) is provided with two linear guide sleeves (508), each of which is slidably sleeved on the corresponding guide column (507).

4. The air-explosion spiral drilling machine according to claim 1, characterized in that, The drill rod (400) is fitted with an axial limiting flange (403), a return spring (404), and a borehole plug (405) from top to bottom. The axial limiting flange (403) is fixedly connected to the outer wall of the drill rod (400), and the borehole plug (405) is slidably fitted on the outer circumference of the drill rod (400). The two ends of the return spring (404) abut against the axial limiting flange (403) and the borehole plug (405) respectively.

5. The air-explosion spiral drilling machine according to claim 1, characterized in that, The fixed bracket (200) is covered with a protective cover (201).

6. The air-explosion spiral drilling machine according to claim 1, characterized in that, The fixed bracket (200) is vertically spaced with an upper travel limit switch (202) and a lower travel limit switch (203).

7. The air-explosion spiral drilling machine according to claim 1, characterized in that, The liquid storage tank (600) is equipped with a vacuum conveyor (601) at its outlet. The fluid switching pipeline assembly (800) includes a rotary joint (801), a first pipe body (802), a first tee joint (803), a second pipe body (804), a third pipe body (805), a second tee joint (806), a fourth pipe body (807), a fifth pipe body (808), a gas explosion control solenoid valve (809), and a liquid delivery solenoid valve (810). The rotary joint (801) is located at the top of the drill rod (400). The first tube (802) is connected to the first interface of the rotary joint (801) and the first tee joint (803). The second tube (804) is connected to the second interface of the first tee joint (803) and the vacuum conveyor (601). The third tube (805) is connected to the third interface of the first tee joint (803) and the first interface of the second tee joint (806). The fourth tube (807) is connected to the outlet of the high-pressure gas source assembly (700) and the second interface of the second three-way connector (806), respectively, and the fifth tube (808) is connected to the third interface of the second three-way connector (806) and the vacuum conveyor (601). The gas explosion control solenoid valve (809) is located on the third pipe body (805), and the liquid push solenoid valve (810) is located on the fifth pipe body (808).

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