Drilling equipment for geological exploration

Abstract

The utility model relates to the technical field of geological exploration, in particular to drilling equipment for geological exploration, which comprises an equipment main body, the interior of the drilling rod is of a hollow structure, a plurality of blocking pieces are arranged around the bottom of the drilling rod, and the blocking pieces are connected with the drilling rod through elastic hinges and can synchronously rotate along with the drilling rod to drill into the stratum; the sampling barrel is arranged in the drilling rod in an up-down sliding mode, the top of the sampling barrel is connected with the drilling rod through a first transmission mechanism, and the bottom of the sampling barrel is open and provided with a diagonal plane and used for pushing away the blocking piece and sampling from the stratum in the drilling process; a second transmission mechanism is arranged in each extension rod; the multiple extension rods are sequentially connected end to end and arranged between the equipment body and the drilling rod, the second transmission mechanisms in the extension rods are sequentially in transmission connection, and the second transmission mechanism in the extension rod at the tail end is in transmission connection with the first transmission mechanism. And geological sampling at a specific depth is realized.

Description

Technical Field

[0001] This utility model relates to the technical field of geological exploration, and in particular to a drilling device for geological exploration. Background Technology

[0002] Geological exploration utilizes drilling techniques to extract underground natural resources or investigate the distribution of strata, collecting physical samples to provide relevant data for experiments. Drilling equipment varies widely depending on its application, ranging from handheld thin-walled drills weighing only a few kilograms to ultra-deep-hole drills weighing thousands of tons, requiring special trucks for transport. The structure of drilling equipment also varies in complexity, from a simple single-speed rotary head or impact mechanism to complex marine scientific drilling vessels that incorporate almost all modern scientific technologies. Currently, the most common types are core drilling rigs, hydrogeological drilling rigs, engineering drilling rigs, and oil drilling rigs; the specific drilling method used depends on the terrain, environment, and actual conditions.

[0003] In existing technologies, when a hollow drill rod is lowered into the ground, geological samples are deposited inside. When the drill rod is retrieved, the samples can be taken out with it. However, when drilling for sampling at a specific depth or in strata prone to borehole collapse, the drill rod already contains samples during the lowering process. The samples must be retrieved after drilling to the desired depth before drilling can continue. If the drilling is deep, the retrieval operation becomes cumbersome, affecting the progress of drilling and sampling and increasing the workload. Therefore, a drilling device for geological exploration is proposed to optimize the existing technology. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] This utility model provides a drilling device for geological exploration, which aims to solve the problem of how to achieve geological sampling without removing the drill rod.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model proposes a drilling device for geological exploration, comprising: a main body; a drill rod with a hollow internal structure and multiple baffles arranged around its bottom, the baffles being connected to the drill rod via elastic hinges and capable of rotating synchronously with the drill rod to drill into the formation; a sampling bucket, slidably disposed inside the drill rod, its top connected to the drill rod via a first transmission mechanism, and its bottom open with a chamfered surface for pushing aside the baffles and taking samples from the formation during drilling; at least one extension rod, each extension rod having a second transmission mechanism inside; multiple extension rods being sequentially connected end-to-end between the main body and the drill rod, with the second transmission mechanism inside each extension rod sequentially driving and connecting, and the second transmission mechanism inside the last extension rod being drivingly connected to the first transmission mechanism.

[0008] A further technical solution is that the extension rod has a connecting inner tube at the top and a connecting outer tube at the bottom; the drilling rod has the connecting inner tube at the top, and the drilling rod and the extension rod, as well as the extension rod and the extension rod, are fixedly connected by the insertion and engagement of the connecting outer tube and the connecting inner tube.

[0009] A further technical solution is that the outer connecting tube is provided with a first connecting hole; corresponding to the first connecting hole, the inner connecting tube is provided with a second connecting hole, and the first connecting hole and the second connecting hole are fixedly connected by a connector.

[0010] A further technical solution is that the first transmission mechanism includes a threaded transmission rod rotatably connected to the sampling bucket, and the top of the threaded transmission rod has a transmission groove; the second transmission mechanism includes a transmission shaft and a support plate disposed inside the extension rod, the top of the transmission shaft has the transmission groove, and the bottom has a transmission block that cooperates with the transmission groove; the support plate is fixedly connected to the extension rod, and a limit hole is provided thereon to limit the radial movement of the transmission shaft.

[0011] A further technical solution is that a magnet is fixed at the bottom of the transmission slot to attract the transmission block that it cooperates with.

[0012] A further technical solution is that the main body of the equipment includes a frame, a first drive mechanism, a second drive mechanism, and a storage structure; the first drive mechanism is slidably mounted on the frame and connected to the inner tube of the extension rod, for driving the extension rod to rotate, thereby driving the drill rod to rotate; the second drive mechanism is mounted on the frame and connected to the first drive mechanism, for driving the first drive mechanism to move up and down, for realizing downward drilling; the storage structure is fixed on the frame and is used to store the drill rod or the extension rod.

[0013] A further technical solution is that the frame includes an upright, a base, a push handle, and wheels; the top of the upright is fixedly connected to the push handle, and the bottom is fixedly connected to one end of the base; the wheels are fixed at the connection between the upright and the base; pressing down the push handle can pry up the end of the base away from the upright by using the wheels as a fulcrum.

[0014] A further technical solution is that the first driving mechanism includes a first motor and a mounting plate, and the second driving mechanism includes a second motor, a lead screw, a guide rod, and a slider; the second motor is fixed to the top of the stand and is drivenly connected to the lead screw, the lead screw is rotatably connected to the stand, the guide rod is fixedly connected to the stand at both ends and is arranged parallel to the lead screw, and the slider is threadedly drivenly connected to the lead screw and slidably connected to the guide rod;

[0015] The first motor is fixedly mounted on the mounting plate and is fixedly connected to the slider. The output end of the first motor is fixedly connected to the drill rod or the extension rod.

[0016] A further technical solution is that the storage structure includes multiple horizontal beams fixed to the uprights; along the extension direction of the horizontal beams, multiple arc-shaped seats are arranged in an array on each horizontal beam, the shape of the arc-shaped seats being adapted to the shape of the drill rod and the extension rod; the opening of the arc-shaped seat has an openable cover plate, and the inner side of the cover plate is provided with an anti-slip pad.

[0017] A further technical solution is that the baffle is triangular, and multiple baffles are connected to the opening at the bottom of the drill rod by spring hinges, and all the baffles form a conical structure.

[0018] (III) Beneficial Effects

[0019] This invention utilizes a hollow drill rod with a baffle plate connected to its bottom end via an elastic hinge, forming a conical drill bit. This conical drill bit allows for easy drilling while simultaneously sealing the opening of the drill rod. As the drill rod penetrates the ground, the baffle plate effectively breaks up and agitates the soil, improving drilling efficiency. Simultaneously, the elastic hinge connection ensures the baffle plate's adaptive flexibility, making the drilling process smoother. A sampling container slides inside the drill rod. When the drilling reaches the sampling position, the rotation of the threaded rod pushes the sampling container out, allowing the sample to directly enter the container for further drilling, enabling sampling at a certain depth without removing the drill rod. The bottom opening of the sampling container has a beveled surface, which helps to better push open the baffle plate and ensure smooth sampling. Furthermore, the sliding design of the sampling container facilitates sample removal after drilling is complete.

[0020] This invention also extends the drilling depth by connecting an extension rod to the top of the drill rod. Furthermore, the extension rods can be combined with each other, thus enabling the device to extend the drilling depth. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of drilling equipment used for geological exploration.

[0022] Figure 2 This is a schematic diagram showing the connection between the extension rod and the drill rod;

[0023] Figure 3 This is a schematic diagram showing the connection between the drill rod and the sampling bucket.

[0024] Figure 4 This is a schematic diagram of the internal structure of the extension rod;

[0025] Figure 5 This is a cross-sectional view of the connection between the inner and outer pipes.

[0026] Figure 6 This is a schematic diagram of the structural composition of the main body of the equipment;

[0027] Figure 7 This is a schematic diagram of the structural composition of the second drive mechanism;

[0028] Figure 8 This is a schematic diagram of the warehouse structure.

[0029] [Explanation of Labels in the Attached Image]

[0030] 1: Equipment body; 11: Frame; 111: Vertical frame; 112: Base frame; 113: Push handle; 114: Wheel; 12: First drive mechanism; 121: First motor; 122: Mounting plate; 13: Second drive mechanism; 131: Second motor; 132: Lead screw; 133: Guide rod; 134: Slider; 14: Storage structure; 141: Crossbeam; 142: Arc-shaped seat; 143: Cover plate; 2: Drill rod; 21: Baffle plate; 3: Sampling bucket; 4: Extension rod; 5: First transmission mechanism; 51: Threaded transmission rod; 6: Second transmission mechanism; 61: Transmission shaft; 62: Support plate; 7: Connecting inner tube; 8: Connecting outer tube; 9: Transmission slot; 91: Magnet; 10: Transmission block. Detailed Implementation

[0031] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] This embodiment provides a drilling device for geological exploration, such as... Figures 1-4As shown, the device includes: a main body 1; a drill rod 2 with a hollow internal structure and multiple baffles 21 arranged around its bottom, the baffles 21 being connected to the drill rod 2 via elastic hinges and capable of rotating synchronously with the drill rod 2 to drill into the formation; a sampling bucket 3, which is slidably disposed inside the drill rod 2, with its top connected to the drill rod 2 via a first transmission mechanism 5, and its bottom open with a beveled surface for pushing aside the baffles 21 and taking samples from the formation during drilling; at least one extension rod 4, each extension rod 4 having a second transmission mechanism 6 inside; multiple extension rods 4 being arranged sequentially between the main body 1 and the drill rod 2, with the second transmission mechanism 6 inside each extension rod 4 being sequentially connected, and the second transmission mechanism 6 inside the last extension rod 4 being connected to the first transmission mechanism 5.

[0033] The main body 1, serving as the supporting structure for the entire equipment, primarily functions as a support and power provider. It is preferably a steel frame structure, which not only improves assembly efficiency but also provides excellent structural load-bearing capacity. A power unit is installed on it to provide rotation for the drill rod 2 or extension rod 4, according to production requirements. The drill rod 2 has a barrel-shaped structure with an open bottom. A baffle 21 is connected to the bottom opening via an elastic hinge. Without external force, all the baffles 21 form a conical structure, allowing it to rotate and drill downwards into the ground under the drive of the main body 1. The sampling bucket 3 is a barrel-shaped structure with a smaller diameter than the drill rod 2. A sliding groove is provided on its outer side, which can slide into the sliding key on the inner wall of the drill rod 2. Through the sliding engagement of the groove and the sliding key, the sampling bucket 3 is slidably installed inside the drill rod 2. The tops of both the extension rod 4 and the drill rod 2 can be connected to the power unit of the main body 1 and rotate under its drive.

[0034] The above scheme constructs a conical drill bit by using a hollow drill rod 2 and connecting a baffle 21 to its bottom end via an elastic hinge. This conical drill bit allows for easy drilling while simultaneously sealing the opening of the drill rod 2. When the drill rod 2 penetrates the formation, the baffle 21 effectively breaks up and agitates the soil, improving drilling efficiency. Simultaneously, the elastic hinge connection ensures the self-adaptive flexibility of the baffle 21, making the drilling process smoother. A sampling container 3 is slidably mounted inside the drill rod 2. When drilling reaches the sampling position, the rotation of the threaded rod pushes the sampling container 3 out, allowing the sample to directly enter the container if drilling continues. This enables sampling at a certain depth without removing the drill rod 2. The bottom opening of the sampling container 3 has a beveled surface, which helps to better push open the baffle 21, ensuring smooth sampling. Furthermore, the sliding design of the sampling container 3 facilitates sample removal after drilling is completed. The design of the extension rods 4 further enhances the flexibility and applicability of the equipment. Multiple extension rods 4 are sequentially connected end-to-end between the main body 1 and the drill rod 2, with the second transmission mechanism 6 inside each extension rod 4 sequentially connected. This allows the main body 1 to transmit power to the drill rod 2 and the sampling bucket 3 via the extension rods 4, enabling long-distance drilling and sampling. Simultaneously, the multiple extension rods 4 also increase the stability of the equipment, allowing it to adapt to drilling needs in formations of varying depths and complexities.

[0035] Specifically, in this embodiment, the extension rod 4 has a connecting inner tube 7 at its top and a connecting outer tube 8 at its bottom; the drilling rod 2 has a connecting inner tube 7 at its top, and the drilling rod 2 and the extension rod 4, as well as the extension rod 4 and the extension rod 4, are fixedly connected by the insertion and engagement of the connecting outer tube 8 and the connecting inner tube 7. It should be noted that the connecting inner tube 7 at the top of the drilling rod 2 and the connecting inner tube 7 at the top of the extension rod 4 have the same specifications and dimensions, and both can be connected to the power unit of the main body 1.

[0036] This plug-in connection method ensures the structural stability between drill rod 2 and extension rod 4, and between extension rods 4 themselves. During drilling, the equipment needs to withstand significant pressure and torque, and the plug-in connection effectively transmits these forces and torques, ensuring smooth drilling operations. Secondly, the plug-in connection simplifies the assembly process and improves assembly efficiency. Compared to traditional bolted or welded connections, the plug-in connection eliminates the need for complex installation steps and tools; simply aligning and inserting the outer connecting tube 8 and the inner connecting tube 7 significantly reduces assembly time.

[0037] Combination Figure 5As shown, in this embodiment, the outer connecting tube 8 is provided with a first connecting hole; corresponding to the first connecting hole, the inner connecting tube 7 is provided with a second connecting hole, and the first connecting hole and the second connecting hole are fixedly connected by a connector. Since the extension rod 4 and the drilling rod 2 need to withstand certain pressure and torque during drilling, in order to ensure the firmness and reliability of the connection, a connector is used to fix the two together, which can effectively increase the reliability of the connection and avoid production interruption caused by the connection breaking during drilling through layers.

[0038] Specifically, the first transmission mechanism 5 includes a threaded transmission rod 51 rotatably connected to the sampling bucket 3, with a transmission slot 9 at its top. The second transmission mechanism 6 includes a transmission shaft 61 and a support plate 62 located inside the extension rod 4. The transmission shaft 61 has a transmission slot 9 at its top and a transmission block 10 at its bottom that mates with the transmission slot 9. The support plate 62 is fixedly connected to the extension rod 4 and has a limiting hole to restrict the radial movement of the transmission shaft 61. The first transmission mechanism 5 is rotatably connected to the sampling bucket 3 via the threaded transmission rod 51 and also connects to the threaded hole / window at the top of the drill rod 2. This threaded transmission not only ensures the stability and accuracy of the transmission but also prevents the sampling bucket 3 from shaking or falling off during drilling through the tight fit of the threads. Simultaneously, the transmission slot 9 at the top of the threaded transmission rod 51 facilitates connection and transmission with the second transmission mechanism 6 on the extension rod 4. The second transmission mechanism 6 has a transmission slot 9 at the top of its transmission shaft 61 and a transmission block 10 at the bottom that mates with the transmission slot 9. This design enables stable transmission of the transmission shaft 61 within the extension rod 4. A support plate 62 is fixedly connected to the extension rod 4 and has a limit hole to restrict the radial movement of the transmission shaft 61. This not only enhances the stability of the transmission shaft 61 but also prevents radial movement during transmission, further improving the transmission accuracy and stability of the equipment. The aforementioned transmission slot 9 is preferably an internal hexagonal slot, and the transmission block 10 is preferably a hexagonal plug, ensuring stable transmission and a long service life.

[0039] Preferably, a magnet 91 is fixed to the bottom of the transmission slot 9 to attract the transmission block 10 that it engages with. The magnet 91 enhances the engagement between the transmission block 10 and the transmission slot 9, making the transmission process more stable.

[0040] like Figures 6-8As shown, in this embodiment, the main body 1 of the equipment includes a frame 11, a first drive mechanism 12, a second drive mechanism 13, and a storage structure 14. The first drive mechanism 12 is slidably mounted on the frame 11 and connected to the inner tube 7 of the extension rod 4, used to drive the extension rod 4 to rotate, thereby driving the drill rod 2 to rotate. The second drive mechanism 13 is mounted on the frame 11 and connected to the first drive mechanism 12, used to drive the first drive mechanism 12 to move up and down, for downward drilling. The storage structure 14 is fixed on the frame 11 and used to store the drill rod 2 or the extension rod 4.

[0041] The frame 11, serving as the supporting structure for the entire equipment body 1, possesses sufficient strength and rigidity to ensure the stability of the equipment during drilling. Simultaneously, the connection between the first drive mechanism 12 and the second drive mechanism 13 and the frame 11 ensures the stability and accuracy of the transmission. The powerful output of the first drive mechanism 12 ensures that the drill rod 2 rotates smoothly and drills into the formation. The vertical movement of the second drive mechanism 13 also facilitates the connection and disconnection of the drill rod 2 and the extension rod 4. The storage structure 14 not only saves space but also makes the storage and retrieval of the drill rod 2 and the extension rod 4 more convenient. During drilling, the drill rod 2 and the extension rod 4 can be quickly replaced or added, improving drilling efficiency.

[0042] Specifically, the frame 11 includes an upright frame 111, a base frame 112, a push handle 113, and wheels 114. The push handle 113 is fixedly connected to the top of the upright frame 111, and one end of the base frame 112 is fixedly connected to the bottom. The wheels 114 are fixed at the connection between the upright frame 111 and the base frame 112. Pressing down the push handle 113 allows the base frame 112 to be pried up at the end furthest from the upright frame 111, using the wheels 114 as a fulcrum. Firstly, thanks to the wheels 114 fixed at the connection between the upright frame 111 and the base frame 112, the entire device can be easily moved on the ground without requiring significant manpower for transport, greatly improving work efficiency. Whether adjusting its position at the exploration site or transferring it between different exploration points, it allows for quick and convenient movement. Secondly, the downward push handle 113 can pry up the end of the base frame 112 away from the upright frame 111 using the wheel 114 as a fulcrum. This allows the operator to apply only a small force when it is necessary to lift or adjust the angle of the equipment, greatly reducing the difficulty of operation and physical exertion. This labor-saving design is essential for operators who conduct exploration operations for extended periods.

[0043] Specifically, the first drive mechanism 12 includes a first motor 121 and a mounting plate 122, and the second drive mechanism 13 includes a second motor 131, a lead screw 132, a guide rod 133, and a slider 134. The second motor 131 is fixed to the top of the support frame 111 and is drivenly connected to the lead screw 132. The lead screw 132 is rotatably connected to the support frame 111. The guide rod 133 is fixedly connected to the support frame 111 at both ends and is arranged parallel to the lead screw 132. The slider 134 is threadedly connected to the lead screw 132 and slidably connected to the guide rod 133. The first motor 121 is fixedly mounted on the mounting plate 122 and is fixedly connected to the slider 134. The output end of the first motor 121 is fixedly connected to the drill rod 2 or the extension rod 4.

[0044] The first drive mechanism 12 fixes the first motor 121 to the slider 134 via the mounting plate 122. The slider 134 is then threadedly connected to the lead screw 132. The entire drive mechanism occupies less space on the stand 111, resulting in a more compact structure. The second motor 131 is connected to the slider 134 via the lead screw 132. The lead screw 132 is rotatably connected to the stand 111, and the guide rod 133 is parallel to the lead screw 132. The slider 134 is slidably connected to the guide rod 133. This ensures stable movement of the slider 134 on the lead screw 132, preventing wobbling or deviation during transmission. Simultaneously, the first motor 121, through the connecting outer tube 8 fixedly connected to its output end, can stably connect to and drive the extension rod 4 to rotate, improving the stability and accuracy of the transmission. Due to the transmission connection between the second motor 131 and the lead screw 132, and the cooperation between the slider 134, the lead screw 132, and the guide rod 133, the mounting plate 122 (and the first motor 121 and the connecting outer tube 8 fixed on it) can move up and down along the lead screw 132. The operator can flexibly adjust the drilling depth according to actual needs, achieving precise operation control. At the same time, the first motor 121 can also adjust its rotation speed and direction according to drilling requirements.

[0045] Specifically, the storage structure 14 includes multiple horizontal beams 141 fixed to the uprights 111. Along the extension direction of the beams 141, multiple arc-shaped seats 142 are arranged in an array on each beam 141. The shape of the arc-shaped seats 142 is adapted to the shape of the drill rod 2 and the extension rod 4. The opening of the arc-shaped seat 142 has an openable cover plate 143, and the inner side of the cover plate 143 is provided with an anti-slip pad.

[0046] The storage structure 14 utilizes multiple horizontal beams 141 fixed to the uprights 111 and multiple arc-shaped seats 142 arranged in an array along the extension direction of the horizontal beams 141 to make full use of the equipment space, so as to realize the neat and orderly placement of the drill rods 2 and extension rods 4, avoid the messy situation, and improve storage efficiency.

[0047] In this embodiment, the baffle 21 is triangular, and multiple baffles 21 are connected to the opening at the bottom of the drill rod 2 by spring hinges, and all the baffles 21 form a conical structure.

[0048] The specific working principle of the geological exploration drilling equipment in the above embodiments is as follows:

[0049] First, the stand 111 is kept at a certain tilt angle by the cooperation of the push handle 113 and the wheel 114, and then the drilling equipment body 1 is moved. When the equipment is moved to the use position, the bolts on the cover plate 143 are loosened, the drill rod 2 and the extension rod 4 are removed, and the drill rod 2 is fixedly connected to the first motor 121 by the cooperation of the inner connecting tube 7 and the outer connecting tube 8. At this time, the first motor 121 and the second motor 131 are started. The drill rod 2 is driven to rotate by the first motor 121, and the lead screw 132 is driven to rotate by the second motor 131, which in turn drives the slider 134 to slide down along the guide rod 133, causing the mounting plate 122 to descend, thereby causing the drill rod 2 to rotate and insert into the ground for drilling. After the drill rod 2 has completely entered the ground, the first motor 121 is reset, the extension rod 4 is removed from the storage structure 14, and the bottom of the extension rod 4 is connected to the drill rod 2, and the top of the extension rod 4 is connected to the output end of the first motor 121. During the connection process, ensure that the hexagonal drive block 10 is inserted into the hexagonal drive slot, and that the magnet 91 forms a magnetic attraction for fixation. Then continue drilling downwards. Repeat the above operation until the sampling position is reached. At this point, use a hexagonal tool to slowly rotate the hexagonal plug at the top of the uppermost extension rod 4. Through the mutual cooperation of the connecting shaft, the threaded rod is driven to rotate, causing the sampling bucket 3 to be pushed out of the baffle 21 of the drill rod 2, and the drilled sample enters the sampling bucket 3 for collection.

[0050] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indicator will also change accordingly.

[0051] Furthermore, in this embodiment, the use of terms such as "first" and "second" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this embodiment, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0052] In this embodiment, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this embodiment according to the specific circumstances.

[0053] It should be understood that the above description of the specific embodiments of this utility model is only for illustrating the technical route and features of this utility model, and its purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. However, this utility model is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of this utility model should be covered by the protection scope of this utility model.

Claims

1. A drilling apparatus for geological exploration, characterized by, include: Equipment body (1); The drill rod (2) has a hollow internal structure and multiple baffles (21) are arranged around the bottom. The baffles (21) are connected to the drill rod (2) through elastic hinges and can rotate synchronously with the drill rod (2) to drill into the formation. The sampling bucket (3) is slidably disposed inside the drilling rod (2) and connected to the drilling rod (2) at the top via the first transmission mechanism (5). The bottom is open and the opening has a beveled surface, which is used to push open the baffle (21) and take samples from the formation during the drilling process. At least one extension rod (4), each of the extension rods (4) is provided with a second transmission mechanism (6); Multiple extension rods (4) are connected end to end between the equipment body (1) and the drilling rod (2), and the second transmission mechanism (6) inside each extension rod (4) is connected in sequence. The second transmission mechanism (6) inside the last extension rod (4) is connected in sequence with the first transmission mechanism (5).

2. The drilling equipment for geological exploration as described in claim 1, characterized in that, The extension rod (4) has an inner tube (7) at the top and an outer tube (8) at the bottom; The drill rod (2) has the connecting inner tube (7) at its top. The drilling rod (2) and the extension rod (4), and the extension rod (4) and the extension rod (4) are fixedly connected by the insertion and engagement of the connecting outer tube (8) and the connecting inner tube (7).

3. The drilling equipment for geological exploration as described in claim 2, characterized in that, The connecting outer tube (8) is provided with a first connecting hole; Corresponding to the first connecting hole, a second connecting hole is provided on the inner connecting tube (7), and the first connecting hole and the second connecting hole are fixedly connected by a connector.

4. The drilling apparatus for geological exploration as recited in claim 2, wherein The first transmission mechanism (5) includes a threaded transmission rod (51) rotatably connected to the sampling barrel (3), and the top of the threaded transmission rod (51) has a transmission slot (9); The second transmission mechanism (6) includes a transmission shaft (61) and a support plate (62) disposed inside the extension rod (4). The transmission shaft (61) has a transmission slot (9) at the top and a transmission block (10) at the bottom that cooperates with the transmission slot (9). The support plate (62) is fixedly connected to the extension rod (4) and has a limit hole thereon to limit the radial movement of the transmission shaft (61).

5. The drilling apparatus for geological exploration as recited in claim 4, wherein A magnet (91) is fixed to the bottom of the transmission slot (9) for adsorbing the transmission block (10) that it cooperates with.

6. The drilling apparatus for geological exploration as recited in claim 1, wherein The main body of the equipment (1) includes a frame (11), a first drive mechanism (12), a second drive mechanism (13), and a storage structure (14); The first drive mechanism (12) is slidably mounted on the frame (11) and connected to the inner tube (7) of the extension rod (4) to drive the extension rod (4) to rotate, thereby driving the drill rod (2) to rotate. The second drive mechanism (13) is mounted on the frame (11) and connected to the first drive mechanism (12), and is used to drive the first drive mechanism (12) to move up and down, so as to realize downward drilling; The storage structure (14) is fixed to the frame (11) and is used to store the drill rod (2) or the extension rod (4).

7. The drilling apparatus for geological exploration as claimed in claim 6, characterized in that, The frame (11) includes an upright (111), a base frame (112), a push handle (113), and wheels (114); The top of the upright frame (111) is fixedly connected to the push handle (113), and the bottom is fixedly connected to one end of the base frame (112). The wheel (114) is fixed at the connection between the upright frame (111) and the base frame (112). Pressing down the push handle (113) can pry up the end of the base frame (112) away from the upright frame (111) using the wheel (114) as a fulcrum.

8. The drilling apparatus for geological exploration as recited in claim 7, wherein The first drive mechanism (12) includes a first motor (121) and a mounting plate (122), and the second drive mechanism (13) includes a second motor (131), a lead screw (132), a guide rod (133), and a slider (134); The second motor (131) is fixed to the top of the stand (111) and is connected to the lead screw (132) for transmission. The lead screw (132) is rotatably connected to the stand (111). The guide rod (133) is fixedly connected to the stand (111) at both ends and is arranged parallel to the lead screw (132). The slider (134) is threadedly connected to the lead screw (132) and slidably connected to the guide rod (133). The first motor (121) is fixedly mounted on the mounting plate (122) and fixedly connected to the slider (134). The output end of the first motor (121) is fixedly connected to the drill rod (2) or the extension rod (4).

9. The drilling apparatus for geological exploration as recited in claim 7, wherein, The storage structure (14) includes a plurality of horizontal beams (141) fixed to the uprights (111); Along the extension direction of the crossbeam (141), a plurality of arc-shaped seats (142) are arranged in an array on each crossbeam (141), and the shape of the arc-shaped seats (142) is adapted to the shape of the drill rod (2) and the extension rod (4); The arc-shaped seat (142) has an openable cover plate (143) at its opening, and the inner side of the cover plate (143) is provided with an anti-slip pad.

10. The drilling apparatus for geological exploration as recited in claim 1, wherein, The baffle (21) is triangular, and multiple baffles (21) are connected to the opening at the bottom of the drill rod (2) by spring hinges. All the baffles (21) form a conical structure.

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