Detachable soil drilling and sampling device

Abstract

A detachable soil drilling and taking device comprises a drill rod, a soil taking drill bit and a soil taking drill handle, the drill rod is a segmented detachable hollow rod with external threads, two adjacent drill rods are connected in a clamped mode through a buckle, the soil taking drill bit and the soil taking drill handle are connected with the lowermost drill rod and the uppermost drill rod in a clamped mode through buckles respectively, and the soil taking drill bit and the soil taking drill handle are connected with the lowermost drill rod and the uppermost drill rod in a clamped mode. The soil sampling drill bit is of a micro-circular-truncated-cone structure with the upper caliber larger than the lower caliber, and a lower opening of the soil sampling drill bit is of a symmetrical shovel-shaped structure with blades. The soil sampling drill bit is of a shovel-shaped hollowed-out structure with a blade, and is provided with a bulldozing structure, so that the drill bit can conveniently go deep into a soil layer and remove an adhered soil sample.

Description

Technical Field

[0001] The utility model relates to a soil drilling drill, in particular to a detachable soil drilling device. Background Art

[0002] Soil moisture information is an important basis for field irrigation management decisions. The accuracy of its information collection directly affects the precision of irrigation management. There are currently two main methods for collecting soil moisture: one is the constant temperature oven drying method, that is, according to the sampling requirements, the original soil at different depths is drilled with a soil drill, and the soil is dried in a constant temperature oven to a constant weight, and then the soil moisture content is calculated. This method measures the soil moisture content with high accuracy, but requires the use of special equipment such as a constant temperature oven, and has poor timeliness. It is generally used for experimental research; the second is to use soil moisture sensors for monitoring. The sensors are buried at a specific depth below the surface to collect soil moisture conditions in real time to provide decision support for field irrigation pipes. With the continuous development of smart agriculture, it has been widely promoted and applied.

[0003] At present, there are two main types of soil moisture sensors: pin-type and tube-type. Pin-type sensors require trenches / pits to be buried, which requires a lot of excavation work and will destroy the original soil structure during excavation. Therefore, tube-type soil moisture sensors are mostly used. To ensure the accuracy of the collected information, it is generally required that the original soil structure should not be destroyed during the sensor burial process. At present, the common installation method is to bury the sensor at a specific depth below the surface after drilling a hole with a soil drill. The burial depth of soil moisture sensors varies according to the requirements of different application scenarios. At present, commonly used soil auger mostly adopts direct pressing method to press the drill bit into the soil layer, which can be successfully taken out when the soil is loose or the soil depth is shallow; but when the soil layer that needs to be taken or drilled reaches a certain depth, especially when the soil is clay soil or the soil texture is dense, the difficulty of sampling increases significantly. It is difficult to reach the set soil sampling depth by directly pressing method. Soil sampling is time-consuming and laborious, and the taken soil sample will adhere to the inner wall of the soil auger and is difficult to remove, affecting the efficiency of soil sampling and drilling.

[0004] In addition, the handles, drill rods and drill bits of commonly used soil drills are mostly welded into one piece, which is large and inconvenient to carry, and difficult to repair after damage. For this reason, some soil drills adopt a split structural design, and the components are connected by threads. However, since rotation assistance is generally required during soil extraction, if the rotation direction is opposite to the thread tightening direction, the connection is easy to loosen during soil extraction; if the rotation direction is consistent with the thread tightening direction, the components will become tighter and tighter, which is not only not conducive to disassembly, but also easy to damage the thread, affecting the normal use of the soil drill. Utility Model Content

[0005] The utility model provides a detachable soil drilling device to overcome the drawbacks of the prior art. The drill bit is a shovel-shaped hollow structure with a blade and is provided with a bulldozer structure, which is convenient for the drill bit to penetrate into the soil layer and remove the adhered soil sample.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A detachable soil drilling device comprises a drill rod, a soil drilling bit and a soil drilling handle. The drill rod is a segmented detachable externally threaded hollow rod, two adjacent sections of the drill rod are connected by snaps, the soil drilling bit and the soil drilling handle are respectively connected to the lowermost and uppermost sections of the drill rod by the snaps, and the soil drilling bit is a micro-conical structure with an upper diameter larger than a lower diameter, and its lower opening is a symmetrical shovel-shaped structure with a blade.

[0008] The above-mentioned detachable soil drilling device is also provided with a bulldozer structure, including a bulldozer connecting rod, a bulldozer piece and a bulldozer handle. The bulldozer connecting rod is a smooth solid rod that is detachable in sections. Two adjacent sections of the bulldozer connecting rod are threadedly connected. The bulldozer connecting rod is sleeved inside the drill rod. The diameter of the bulldozer connecting rod is smaller than the diameter of the drill rod cavity. The bulldozer piece is welded to the lower end of the lowermost bulldozer connecting rod, and the bulldozer handle is welded to the upper end of the uppermost bulldozer connecting rod. The bulldozer piece is a circular disc structure, which is arranged in the soil drilling bit. Its diameter is the same as the lower opening diameter of the soil drilling bit. The total length of the bulldozer connecting rod is greater than the total length of the drill rod and the soil drilling bit.

[0009] The above-mentioned detachable soil drilling device has a hollow external hexagonal boss at one end of each drill rod, and the inner wall of the cavity at the other end is set as an internal hexagonal cavity. The top of the soil drilling drill bit is provided with a hollow external hexagonal boss, which is clamped with the internal hexagonal cavity at the bottom of the drill rod at the lower end. The connecting port of the soil drilling drill handle and the drill rod is set as an internal hexagonal cavity. The buckles are symmetrically arranged on the external hexagonal boss, and the buckles include a clamping spring and a clamping bead. The bottom of the clamping spring is integrally arranged with the plane of the external hexagonal boss, and the clamping bead is arranged on the retaining spring. A clamping hole is correspondingly arranged on the inner wall of the internal hexagonal cavity. The external hexagonal boss matches the size of the internal hexagonal boss, and the external hexagonal boss can be inserted into the internal hexagonal cavity, and the clamping bead is clamped with the clamping hole.

[0010] The above-mentioned detachable soil drilling device also includes a power pedal, including a connecting nut and a foot pedal. Two foot pedals are provided and symmetrically welded on the opposite side walls of the connecting nut. The internal thread of the connecting nut matches the external thread on the drill rod, and the two are threadedly connected.

[0011] The above-mentioned detachable soil drilling device, the soil drilling drill bit is designed to be a hollow structure.

[0012] In the above-mentioned detachable soil drilling device, the threads at the joints of two adjacent drill rods are continuously arranged.

[0013] The beneficial effects of the utility model are as follows: the drill bit of the utility model adopts a shovel-shaped blade structure design to increase the tangential force of the contact surface with the soil, and at the same time, a spiral pedal-type power-assisting structure is added to facilitate the soil drill to penetrate into the soil layer, thereby improving the soil extraction work efficiency;

[0014] The drill bit adopts a micro-inverted cone hollow structure design, which can effectively prevent soil samples from adhering to the inner wall of the soil drill bit; the additional bulldozer structure can make it easier to clear the soil samples in the soil drill bit; the soil that partially adheres to the soil drill can be manually removed through the hollow structure;

[0015] The soil drilling device adopts a split structural design, the bulldozer connecting rod adopts a split threaded connection, and the drill rod adopts a snap-on connection, which is easy to install and disassemble, and easy to store and carry after disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model will be further described below in conjunction with the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of the soil drilling device of the utility model;

[0018] Figure 2 It is a schematic diagram of the side structure of the soil drilling device;

[0019] Figure 3 It is a schematic diagram of the structure of a single section drill pipe;

[0020] Figure 4 This is a schematic diagram of the soil drill bit structure;

[0021] Figure 5 This is a schematic diagram of the power pedal structure;

[0022] Figure 6 This is a schematic diagram of a single-section bulldozer connecting rod structure.

[0023] In the figure: 1, drill rod; 1-1, external hexagonal boss; 1-2, clamping hole; 2, soil drill bit; 3, soil drill handle; 4, buckle; 4-1, clamping spring; 4-2, clamping bead; 5, bulldozer connecting rod; 6, bulldozer piece; 7, bulldozer handle; 8, power pedal; 8-1, connecting nut; 8-2, foot pedal. DETAILED DESCRIPTION

[0024] The utility model will be further described below in conjunction with the accompanying drawings.

[0025] See also Figures 1 to 3The utility model comprises a detachable soil drilling device including a drill rod 1, a soil drilling bit 2, a soil drilling handle 3 and a bulldozer structure. The soil drilling bit is connected to the bottom of the drill rod by a buckle 4, and the soil drilling handle is connected to the top of the drill rod by a buckle. The drill rod is formed by butting a plurality of detachable externally threaded hollow short drill rods, and two adjacent short drill rods are clamped by a buckle 4. The specific structure of the buckle clamping part is as follows: an outer hexagonal boss 1-1 is provided at one end of each short drill rod, and an inner hexagonal structure is provided at the inner wall of the cavity at the other end. Two adjacent short drill rods are butted, and the outer hexagonal boss of one short drill rod is inserted into the inner hexagonal cavity of the other short drill rod. Similarly, the soil drilling handle 3 is connected to the short rod of the uppermost section. The connection port for clamping the drill rod is set as an internal hexagonal cavity, and an external hexagonal boss structure is set on the top of the soil drill bit 2, which is used to clamp in the internal hexagonal cavity at the bottom of the short drill rod at the lower end. The external hexagonal boss is symmetrically provided with the buckle 4, and the buckle 4 includes a clamping spring 4-1 and a clamping bead 4-2. The bottom of the clamping spring 4-1 is integrally arranged with the plane of the external hexagonal boss, and the clamping bead 4-2 is arranged on the retaining spring 4-2. A clamping hole 1-2 is correspondingly arranged on the inner wall of the internal hexagonal cavity. The external hexagonal boss 1-1 is consistent with the size of the internal hexagonal, and the external hexagonal boss can be inserted in the internal hexagonal cavity, and the clamping bead 4-2 is clamped with the clamping hole 1-2. The connections of the short drill rods, the connection between the soil drill handle and the drill rod, and the connection between the soil drill bit and the drill rod all adopt a hexagonal structure with internal and external matching. When the soil drill is rotating, the tangential force generated by the spiral can be reduced to prevent the buckle structure from being damaged due to excessive tangential force. This connection method can also solve the problem of the existing threaded connection being easy to loosen. The drill rod adopts a multi-section docking method, and the total length of the drill rod after assembly can be selected according to actual needs, which is convenient for soil extraction operations and easy to carry and store after disassembly.

[0026] See also Figure 1 and Figure 4 The soil drill bit of the utility model adopts a micro-truncated cone structure with an upper diameter larger than a lower diameter, and its lower mouth is a symmetrical shovel-shaped hollow structure with blades. On the one hand, when taking soil, the larger diameter of the upper mouth can expand the drilling hole of the soil drill, and it is convenient to remove the drill bit; on the other hand, a certain gap is left between the soil column formed by the drilled soil sample in the drill bit and the inner wall of the soil drill bit to prevent the soil sample from adhering to the inner wall of the soil drill bit. In addition, the shovel-shaped blade structure makes it easy for the soil drill bit to penetrate into the soil, and when rotating and applying force, the bladed structure design can provide tangential force, which is convenient for soil taking. The hollow design is convenient for manual cleaning of soil samples. When the soil sample is too sticky to be cleaned, the hollow structure can be used to assist in cleaning with the help of external force. On the other hand, the hollow structure design saves materials and makes the soil drill lighter.

[0027] See also Figure 1 and Figure 6The bulldozer structure includes a bulldozer connecting rod 5, a bulldozer blade 6 and a bulldozer handle 7. The bulldozer connecting rod 5 is also configured as a detachable smooth solid rod structure. Two adjacent short bulldozer connecting rods are threadedly connected. The connected bulldozer connecting rod 5 is mounted in the drill rod 1. The diameter of the bulldozer connecting rod is smaller than the diameter of the drill rod cavity. The bulldozer blade 6 and the bulldozer handle 7 are respectively welded to the lower end of the lowermost bulldozer connecting rod and the top of the uppermost bulldozer connecting rod. The bulldozer blade is arranged in the cavity of the soil drill bit. The bulldozer blade 6 is a disc structure, and its diameter is the same as the lower diameter of the soil drill bit 2. The total length of the bulldozer connecting rod 5 is greater than the total length of the drill rod 1 and the soil drill bit 2. The bulldozer connecting rod can move up and down inside the drill rod. When taking soil, the bulldozer connecting rod is lifted upward to lift the bulldozer blade to the top of the soil drill bit; after taking soil, the bulldozer connecting rod is pushed downward to move the bulldozer blade downward to push down the soil sample inside the soil drill bit.

[0028] See also Figure 1 and Figure 5 The drill rod is also provided with a booster pedal 8, which includes a connecting nut 8-1 and a foot pedal 8-2. The foot pedal 8-2 is provided with two and symmetrically welded on the opposite side walls of the connecting nut 8-1. The internal thread of the connecting nut 8-1 matches the external thread on the drill rod 1, and the two are threadedly connected. The threads at the joint of two adjacent drill rods are continuously arranged, which is convenient for the connecting nut 8-1 to adjust different heights as needed. The booster pedal 8 is spirally installed from the end of the drill rod to a suitable height. When taking soil, hold the soil drill handle 3, step on the foot pedal 8-2 with both feet (or one foot) to apply vertical cutting force to the drill bit, so that the drill bit can penetrate into the soil. When the booster pedal 8 needs to be disassembled, the reverse spiral can be unscrewed; the booster pedal 8 adopts a symmetrical structural design, which can solve the problem of eccentric force easily generated when a single foot is used for power assistance.

[0029] The push handle and the auger handle of the auger are equipped with rubber threaded anti-skid sleeves, which are anti-skid and easy to apply force.

Claims

1. A detachable soil drilling device, characterized in that: The device comprises a drill rod (1), a soil drill bit (2) and a soil drill handle (3); the drill rod (1) is a segmented, detachable hollow rod with external threads; two adjacent segments of the drill rod are clamped together by means of a buckle (4); the soil drill bit (2) and the soil drill handle (3) are respectively clamped together with the lowermost segment and the uppermost segment of the drill rod by means of the buckle (4); the soil drill bit (2) is a micro-truncated cone structure with an upper diameter larger than a lower diameter, and its lower opening is a symmetrical shovel-shaped structure with blades.

2. The detachable soil drilling device according to claim 1 is characterized in that: The device is also provided with a bulldozer structure, comprising a bulldozer connecting rod (5), a bulldozer blade (6) and a bulldozer handle (7). The bulldozer connecting rod (5) is a smooth solid rod that is detachable in sections. Two adjacent bulldozer connecting rod sections are threadedly connected. The bulldozer connecting rod (5) is sleeved inside the drill rod (1). The diameter of the bulldozer connecting rod (5) is smaller than the diameter of the cavity of the drill rod (1). The bulldozer blade (6) is welded to the lower end of the bulldozer connecting rod at the lower end. The bulldozer handle (7) is welded to the upper end of the bulldozer connecting rod at the upper end. The bulldozer blade (6) is a disc structure and is arranged inside the soil drill bit (2). The diameter of the bulldozer connecting rod is the same as the diameter of the lower opening of the soil drill bit (2). The total length of the bulldozer connecting rod (5) is greater than the total length of the drill rod (1) and the soil drill bit (2).

3. The detachable soil drilling device according to claim 1 is characterized in that: A hollow external hexagonal boss (1-1) is provided at one end of each drill rod, and the inner wall of the cavity at the other end is provided as an internal hexagonal cavity. The top of the soil drill bit (2) is provided with the hollow external hexagonal boss (1-1), which is engaged with the internal hexagonal cavity at the bottom of the drill rod at the lowest end. The connection port between the soil drill handle (3) and the drill rod is provided as an internal hexagonal cavity. The buckles (4) are symmetrically provided on the external hexagonal boss, and the buckles (4) include a snap-on spring. The clamping spring piece (4-1) and the clamping bead (4-2) are provided, the bottom of the clamping spring piece (4-1) is integrally arranged with the plane of the external hexagonal boss, the clamping bead (4-2) is arranged on the clamping spring piece (4-1), a clamping hole (1-2) is correspondingly arranged on the inner wall of the internal hexagonal cavity, the external hexagonal boss (1-1) matches the size of the internal hexagonal, the external hexagonal boss can be inserted into the internal hexagonal cavity, and the clamping bead (4-2) is clamped with the clamping hole (1-2).

4. The detachable soil drilling device according to claim 1 is characterized in that: The device also includes a booster pedal (8), including a connecting nut (8-1) and a foot pedal (8-2), wherein two foot pedals (8-2) are provided and symmetrically welded on two opposite side walls of the connecting nut (8-1), and the internal thread of the connecting nut (8-1) matches the external thread on the drill rod (1), and the two are threadedly connected.

5. The detachable soil drilling device according to claim 1 is characterized in that: The soil drilling bit (2) is designed as a hollow structure.

6. The detachable soil drilling device according to claim 1 is characterized in that: The threads at the butt joints of two adjacent drill pipes are continuously arranged.

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