Unmanned grain pile sampling vehicle device

Abstract

The invention relates to an unmanned grain pile sampling vehicle device which comprises a drilling mechanism, an air supply mechanism and an unmanned vehicle, the drilling mechanism comprises a shell, a drill rod and a drill bit, the drill rod is installed in the shell, the drill rod and the shell are in sealed connection, the drill rod can rotate relative to the shell, and the upper end of the drill rod is detachably and fixedly connected with a driving rod; the driving rod is used for driving the drill rod to rotate around the axis of the drill rod, the lower end of the drill rod is detachably and fixedly connected with the drill bit, the drill bit is in a wide-end-up frustum shape, a vertically-through air channel is formed in the drill bit and communicated with the air supply mechanism in a sealed mode, and spiral blades are arranged on the outer surface of the drill bit. The screw pitch of the spiral blade is matched with the size of to-be-sampled grain particles. The grain sampling device is higher in sampling accuracy, simple in structure, corresponding to different grains, only the drill bit needs to be replaced, more convenience is achieved, through the unmanned vehicle sampling mode, the labor cost is reduced, the sampling safety is improved, and the automation degree is higher.

Description

Technical Field

[0001] The invention relates to the technical field of grain storage equipment, and in particular to an unmanned grain pile sampling vehicle device. Background Art

[0002] As a major grain producer, my country's food security has always been an important foundation for national security. Food security includes production, processing, circulation, storage and other links, among which the storage link of grain is particularly important. At present, grain reserves are mainly stored in granaries. The storage capacity of large granaries can reach about 1,000 tons. With such a huge reserve, it is particularly important to detect the state of grain in the granary. At present, in many areas with relatively low development levels, it is difficult to effectively monitor the internal state of the granary.

[0003] At present, grain pile detection mainly adopts the following methods, such as pre-embedded sensors in the barn, and detection is carried out through different types of sensors at several points. For example, Chinese patent CN115024103B discloses a smart barn static storage grain temperature and grain condition security early warning system and early warning device, including a shallow circular silo, an exhaust fan and a temperature and humidity monitor. Exhaust fans are installed on both sides of the shallow circular silo, and the top of the exhaust fan is connected to the air supply duct through a flange. The temperature and humidity monitors are evenly distributed inside the shallow circular silo. The number of temperature and humidity monitors is two groups, one group of temperature and humidity monitors is evenly installed on the shallow circular silo, and the other group of temperature and humidity monitors is evenly installed on the lower surface of the wind box. An electric control box is installed on the outer surface of the shallow circular silo, and the electric control box is equipped with a temperature and humidity controller, an audible and visual alarm controller and an electromagnetic controller. The output end of the temperature and humidity controller is electrically connected to the temperature and humidity monitor through a wire. The above-mentioned prior art uses a point-type air supply mechanism installed above the shallow circular silo, and connects the air supply pipe with the wind box, so that the airflow can enter the wind box through the air supply pipe, and the temperature and humidity abnormal position is monitored by the temperature and humidity monitor at the bottom of the wind box, and then the electromagnetic controller is controlled by the system monitoring unit to energize the electromagnetic block in the abnormal area to generate magnetic force, which is transmitted to the connecting shaft through the armature, and then the connecting seat is adsorbed by the connecting shaft, so that the connecting seat is adsorbed and rotates in the direction of the armature, thereby driving the damper to rotate and unfold, so that the area can be connected with the shallow circular silo, and the airflow is concentrated from the abnormal temperature and humidity position, thereby realizing point-to-point temperature and humidity processing. The advantages of this method are accurate sampling results and a high degree of intelligence. The disadvantages are that the cost of embedded sensors is high, and the monitoring points are fixed, making it difficult to perform flexible sampling and detection. At the same time, the technology is too complicated and difficult to promote on a large scale.

[0004] In addition, there is manual sampling, which uses a sampling machine and workers to take grain or seed samples at required points, and then observes the sample status or analyzes the sample. For example, Chinese patent CN111811878B discloses a high-stability sampling mechanism of an intelligent grain sampling machine, which includes a stand, a fixed frame is fixedly installed on the top of the stand, a first motor is fixedly installed on the fixed frame, a turntable is fixedly connected to the right side of the first motor, a crossbeam is fixedly connected to the right side of the turntable, a track is fixedly installed on the top of the crossbeam, a mobile frame is movably connected to the track, an adjustment frame is movably connected to the mobile frame, and a sampling tube is fixedly connected to the bottom of the adjustment frame; the sampling tube includes an outer tube and an inner tube, and a plurality of sampling mechanisms are arranged on the right side of the sampling tube at equal distances from top to bottom. This method has very flexible sampling cycles and sampling points, and the cost of manual sampling is low. However, in actual exploration sampling operations, due to the low density and smooth texture of the grain itself, when the drill bit contacts the grain, the surface grain structure is relatively loose, and the drill bit will slip on the surface, making it difficult to accurately locate the sampling position, resulting in deviations in the sampling results. At the same time, as the drill rod goes deeper into the grain pile, due to the loose texture of the upper grain and the lack of a supporting structure in the drill hole, the loose grain in the upper layer will slide down the inner wall of the borehole to the lower drill bit sampling point, causing the actual depth of the sampling result to deviate from the expected depth, which in turn causes errors in the measurement value, affecting the accuracy of monitoring the overall state of the grain pile. Therefore, it is particularly necessary to design a reasonable and easy-to-use sampling device. Summary of the invention

[0005] The present invention is intended to provide an unmanned grain pile sampling vehicle device to solve the deficiencies in the prior art. The technical problem to be solved by the present invention is achieved through the following technical solutions.

[0006] An unmanned grain pile sampling vehicle device comprises a drilling mechanism and an air supply mechanism, wherein the drilling mechanism comprises an outer shell, a drill rod and a drill bit, wherein the drill rod is installed inside the outer shell, the drill rod and the outer shell are sealed and connected, and the drill rod can rotate relative to the outer shell, the upper end of the drill rod is detachably fixedly connected to a driving rod, the driving rod is used to drive the drill rod to rotate around its own axis, the lower end of the drill rod is detachably fixedly connected to the drill bit, the drill bit is in the shape of a cone with a wide upper part and a narrow lower part, an air duct running through from top to bottom is arranged in the drill bit, the air duct is sealed and connected to the air supply mechanism, and the outer surface of the drill bit is provided with a spiral blade, the pitch of the spiral blade matches the size of the grain particles to be sampled.

[0007] Preferably, the width of the spiral blade is greater than half the size of the grain particles to be sampled.

[0008] Preferably, a vertical channel is provided on the drill rod, one end of the vertical channel is sealedly connected to the air supply mechanism, and the other end of the vertical channel is sealedly connected to the air duct.

[0009] Preferably, an annular channel is provided on the outer circumference of the drill rod, and a plurality of horizontal channels are provided on the drill rod along the radial direction of its cross section, the vertical channel and the annular channel are connected to each other through the horizontal channel, and the annular channel is sealed and connected to the air supply mechanism.

[0010] Preferably, the housing is provided with a vent, one end of the vent is sealedly connected to the annular channel, and the other end of the vent is sealedly connected to the air supply mechanism.

[0011] Preferably, a sealed bearing is installed between the housing and the drill rod, and the housing and the drill rod are overfitted.

[0012] Preferably, a shoulder is provided on the side surface of the drill rod, the upper end surface of the shoulder abuts against the lower end surface of the drill rod, an annular groove is provided on the side surface of the drill rod, the height of the annular groove matches the height of the upper end surface of the sealing bearing, and a retaining spring is installed in the annular groove.

[0013] Preferably, the air supply mechanism includes a cylinder body, a piston and a piston driving mechanism, an air guide hole I is opened at the upper end of the cylinder body, and an air guide hole II is opened on the side wall, a one-way valve I is installed at the outer end of the air guide hole I, and a one-way valve II is installed at the outer end of the air guide hole II, and the piston driving mechanism is used to drive the piston to reciprocate up and down, when the piston moves downward to the lower limit position, the one-way valve I is connected inwardly and the one-way valve II is closed; when the piston moves from the lower limit position to the upper movement limit position, the one-way valve II is connected outwardly and the one-way valve I is closed.

[0014] Preferably, the piston driving mechanism includes a motor, a camshaft, a piston connecting rod and a connecting pin, the motor is fixedly connected to the cylinder body, the camshaft is rotationally connected to the cylinder body, the end of the cam on the camshaft away from the camshaft is fixedly connected to the output shaft of the motor, one end of the piston connecting rod is rotationally connected to the camshaft, and the other end is rotationally connected to the connecting pin, and the connecting pin is fixedly connected to the piston.

[0015] It also includes an unmanned vehicle, the drilling mechanism and the air supply mechanism are installed on the unmanned vehicle, a rotating shaft is installed on the unmanned vehicle, the drilling mechanism is movably connected to the rotating shaft, and the drilling mechanism can rotate around the axis of the rotating shaft, a servo motor is installed on the unmanned vehicle, the output end of the servo motor is fixedly connected to the large wheel of the swing cam, and the rotating shaft of the servo motor and the central axis of the large wheel of the swing cam coincide with each other, the drill rod of the drilling mechanism is connected to the output end of the sampling drive motor, the lower part of the sampling drive motor is provided with an arc groove, the wheel axle of the small wheel of the swing cam is clamped in the arc groove and can move along the arc of the arc groove, and a plurality of independently suspended wheels are installed at the bottom of the unmanned vehicle, and the independent suspension wheels have built-in hub motors.

[0016] In the present invention, an airway is arranged in the drill bit installed on the unmanned vehicle, and the airway is sealed and connected with the air supply mechanism through a hose. When the sampling device is working, air is ventilated into the airway through the air supply mechanism to blow away the grain near the lower end surface of the drill bit, so as to avoid the grain around the drill bit sliding down along the side of the drill bit during the drilling process, affecting the accuracy of the sampled sample, so that the original position of the grain particles near the drill bit is closest to the position to be sampled. When the drill bit reaches the target position to be sampled, the sampling drive device drives the driving rod to rotate, thereby driving the drill rod to rotate, and then driving the drill bit to rotate, and the pitch of the spiral blade on the side cone surface of the drill bit matches the size of the grain particles to be sampled, so that the grain particles located on the side cone surface of the drill bit in the frustum shape are stuck in the spiral blade on the side cone surface of the drill bit, and then the sampling device is taken out to complete the sampling. The drill bit and the drill rod are detachably fixedly connected, which is convenient for replacing the drill bit with a spiral blade with a corresponding pitch according to the size of the grain particles to be sampled, which is more flexible and practical. At the same time, the unmanned vehicle platform can realize remote unmanned operation, making grain pile sampling more efficient.

[0017] The present invention provides an unmanned grain pile sampling vehicle device. By arranging an air supply mechanism and an air duct in a drill bit that is sealed and connected to the air supply mechanism, grain particles near the drill bit are blown away from the vicinity of the drill bit during the drilling process of the sampling device, so as to ensure that the original position of the grain particles near the drill bit is closest to the position of the sampling part. Compared with the prior art, the sampling accuracy is higher, the sampling safety is higher, and the efficiency is higher. By arranging spiral blades on the side cone surface of the drill bit, the grain particles are clamped and taken out by the spiral blades, and the structure is simpler. Corresponding to different grains, only the drill bit needs to be replaced without replacing other parts, which is more convenient. The unmanned vehicle sampling method reduces the labor cost, improves the safety of sampling, and has a higher degree of automation. The arrangement of the unmanned vehicle, the independent suspension wheels, and the hub motor enables the grain pile sampling device to better adapt to different drilling environments and run more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a schematic cross-sectional structure diagram of the drilling mechanism in the present invention;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the drill rod in the present invention;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the drill bit in the present invention;

[0022] Figure 5 It is a three-dimensional structural schematic diagram of the air supply mechanism in the present invention;

[0023] Figure 6 It is a cross-sectional structural schematic diagram of the air supply mechanism in the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the unmanned vehicle in the present invention;

[0025] The reference numerals in the accompanying drawings are: 1. drilling mechanism, 11. housing, 111. vent, 12. drill rod, 121. vertical channel, 122. horizontal channel, 123. annular channel, 124. shoulder, 125. connecting hole, 13. drill bit, 131. air duct, 132. spiral blade, 14. sealed bearing, 15. retaining ring, 2. air supply mechanism, 21. cylinder block, 211. air guide hole I, 212. air guide hole II, 22. piston, 231. motor, 232. camshaft, 233. piston connecting rod, 234. connecting pin, 24. one-way valve I, 25. one-way valve II, 3. hose, 4. unmanned vehicle, 41. servo motor, 42. swing cam, 43. sampling drive motor, 44. rotating shaft, 45. independent suspension wheel. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] Embodiment 1:

[0028] A device for sampling grain piles by an unmanned vehicle is improved in that it comprises a drilling mechanism 1 and an air supply mechanism 2, wherein the drilling mechanism 1 comprises an outer shell 11, a drill rod 12 and a drill bit 13, wherein the drill rod 12 is installed inside the outer shell 11, the drill rod 12 is sealedly connected to the outer shell 11, and the drill rod 12 can rotate relative to the outer shell 11, the upper end of the drill rod 12 is detachably fixedly connected to a driving rod, the driving rod is used to drive the drill rod 12 to rotate around its own axis, the lower end of the drill rod 12 is detachably fixedly connected to the drill bit 13, the drill bit 13 is in the shape of a cone with a wide top and a narrow bottom, an air passage 131 which passes through the drill bit 13 from top to bottom is arranged inside the drill bit 13, the air passage 131 is sealedly connected to the air supply mechanism 2, and a spiral blade 132 is arranged on the outer surface of the drill bit 13, and the pitch of the spiral blade 132 matches the size of the grain particles to be sampled.

[0029] In this embodiment, refer to Figures 1 to 4 As shown, an air passage 131 is provided in the drill bit 13, and the air passage 131 is sealed and connected with the air supply mechanism 2 through the hose 3. When the sampling device is working, air is ventilated into the air passage 131 through the air supply mechanism 2 to blow away the grain near the lower end surface of the drill bit 13, so as to prevent the grain around the drill bit 13 from sliding down along the side of the drill bit 13 during the drilling process, affecting the accuracy of the sample, so that the original position of the grain particles near the drill bit 13 is closest to the position to be sampled. When the drill bit 13 reaches the target position to be sampled, the sampling drive device drives the driving rod to rotate, thereby driving the drill rod 12 to rotate, and then driving the drill bit 13 to rotate, and the pitch of the spiral blade 132 on the side cone surface of the drill bit 13 matches the size of the grain particles to be sampled, so that the grain particles located on the side cone surface of the cone-shaped drill bit 13 are stuck in the spiral blade 132 on the side cone surface of the drill bit 13, and then the sampling device is taken out to complete the sampling. The drill bit 13 and the drill rod 12 are detachably fixedly connected, so that the drill bit with spiral blades of corresponding pitch can be replaced according to the size of the grain particles to be sampled, which is more flexible and practical.

[0030] The present embodiment provides an unmanned grain pile sampling vehicle device, which, by providing an air supply mechanism 2 and an air duct 131 in the drill bit 13 that is sealed and connected to the air supply mechanism 2, can blow grain particles near the drill bit 13 away from the vicinity of the drill bit 13 during the drilling process of the sampling device, so as to ensure that the original position of the grain particles near the drill bit 13 is closest to the position of the sampling part. Compared with the prior art, the sampling accuracy is higher. By providing a spiral blade 132 on the side conical surface of the drill bit 13, the grain particles are clamped and taken out by the spiral blade 132, and the structure is simpler. For different grains, only the drill bit 13 needs to be replaced without replacing other parts, which is more convenient.

[0031] Furthermore, the width of the spiral blade 132 is greater than half of the size of the grain particles to be sampled.

[0032] In this embodiment, the width of the spiral blade 132 is greater than half the size of the grain particles to be sampled, so that the spiral blade 132 can clamp the grain particles more firmly.

[0033] Furthermore, a vertical channel 121 is provided on the drill rod 12 , one end of the vertical channel 121 is sealedly connected to the air supply mechanism 2 , and the other end of the vertical channel 121 is sealedly connected to the air channel 131 .

[0034] Furthermore, an annular channel 123 is provided on the outer circumference of the drill rod 12, and a plurality of horizontal channels 122 are provided radially along the cross section of the drill rod 12. The vertical channel 121 and the annular channel 123 are connected to each other through the horizontal channel 122, and the annular channel 123 is sealed and connected to the air supply mechanism 2.

[0035] Furthermore, the housing 11 is provided with a vent 111 , one end of the vent 111 is sealedly connected to the annular channel 123 , and the other end of the vent 111 is sealedly connected to the air supply mechanism 2 .

[0036] In this embodiment, the gas in the gas supply mechanism 2 is introduced into the vent 111, then enters each horizontal channel 122 through the annular channel 123, then enters the vertical channel 121, and finally enters the airway 131. In this embodiment, for the drilling mechanism, its gas supply channel relies on basic components, namely the housing 11, the drill rod 12 and the drill bit 13, and does not need to be realized by other components. The design is ingenious, and the structure is simpler and more compact, which is more cost-effective and more convenient for later maintenance.

[0037] Furthermore, a sealed bearing 14 is installed between the housing 11 and the drill rod 12 , and the housing 111 and the drill rod 12 are overfitted.

[0038] In this embodiment, the size of the sealing bearing 14 is selected to achieve an overfit between the housing 11 and the drill rod 12, so that the air supply channel is in a sealed state.

[0039] Furthermore, a shoulder 124 is provided on the side surface of the drill rod 12 , and the upper end surface of the shoulder 124 abuts against the lower end surface of the drill rod 12 .

[0040] In this embodiment, the shoulder 124 is provided to limit the relative position of the drill rod 12 and the housing 11 so that the axis of the vent 111 and the annular channel 123 are in the same horizontal plane.

[0041] Furthermore, an annular groove is provided on the side surface of the drill rod 12 , the height of the annular groove matches the height of the upper end surface of the sealing bearing 14 , and a retaining spring 15 is installed in the annular groove.

[0042] Furthermore, a connecting hole 125 is opened at the center of the upper end of the drill rod 12, the inner wall of the connecting hole 125 is provided with an internal thread, the lower end of the driving rod is provided with an external thread matching the internal thread I, and the lower end of the driving rod is threadedly installed in the connecting hole 125 of the drill rod 12.

[0043] Furthermore, the rotation direction of the internal thread is opposite to the rotation direction of the driving rod, so as to prevent the connection between the driving rod and the drill rod 12 from loosening during the drilling process.

[0044] Furthermore, the lower end of the drill rod 12 is threadedly connected to the drill bit 13, and the rotation direction of the threads between the drill rod 12 and the drill bit 13 is opposite to the rotation direction of the drive rod to avoid loosening of the connection between the drill rod 12 and the drill bit 13 during drilling.

[0045] In this embodiment, by adjusting the screwing depth between the drill bit 13 and the drill rod 12, an overfit is achieved between the upper end surface of the drill bit 13 and the step surface above the threaded portion of the drill rod 12, thereby maintaining a sealed state between the vertical channel 121 and the end 131.

[0046] Embodiment 2:

[0047] Based on Example 1, Figure 5 and Figure 6 As shown, the air supply mechanism 2 includes a cylinder body 21, a piston 22 and a piston driving mechanism. An air guide hole I211 is opened at the upper end of the cylinder body 21, and an air guide hole II212 is opened on the side wall. A one-way valve I24 is installed at the outer end of the air guide hole I211, and a one-way valve II25 is installed at the outer end of the air guide hole II212. The piston driving mechanism is used to drive the piston 22 to reciprocate up and down. During the period when the piston 22 moves downward to the lower limit position, the one-way valve I24 is conducted inwardly and the one-way valve II25 is closed; during the period when the piston 22 moves from the lower limit position to the upper movement limit position, the one-way valve II25 is conducted outwardly and the one-way valve I24 is closed.

[0048] In this embodiment, when the piston 22 moves downward, the one-way valve I24 opens inward, the one-way valve II25 closes, and gas is introduced into the cylinder body 21. After the piston 22 moves downward to the lower limit position, it starts to move upward, the one-way valve I24 closes, and the one-way valve II25 opens outward, and the gas in the cylinder body 21 passes into the drilling mechanism 1 through the hose 3, and is finally discharged through 131, thereby blowing away the grain particles near the drill bit 13; this is repeated to continuously introduce gas into the drilling mechanism 1.

[0049] Furthermore, the piston drive mechanism includes a motor 231, a camshaft 232, a piston connecting rod 233 and a connecting pin 234. The motor 231 is fixedly connected to the cylinder body 21, the camshaft 232 is rotationally connected to the cylinder body 21, the cam on the camshaft 232 is fixedly connected to the output shaft of the motor 231 at one end away from the camshaft 232, one end of the piston connecting rod 233 is rotationally connected to the camshaft 232, and the other end is rotationally connected to the connecting pin 234, and the connecting pin 234 is fixedly connected to the piston 22.

[0050] In this embodiment, the motor 231 rotates, driving the cam to rotate, thereby driving the camshaft 232 to rotate around the axis of the output shaft of the motor 231, and then driving the lower end of the piston connecting rod 233 to move up and down, and finally driving the piston 22 to move up and down.

[0051] Embodiment 3:

[0052] Based on Example 1 or Example 2, refer to Figure 7 As shown, it also includes an unmanned vehicle 3, the drilling mechanism 1 and the air supply mechanism 2 are installed on the unmanned vehicle 4, and a rotating shaft 44 is installed on the unmanned vehicle 4. The drilling mechanism 1 is movably connected to the rotating shaft 44, and the drilling mechanism 1 can rotate around the axis of the rotating shaft 44. A servo motor 41 is installed on the unmanned vehicle 4, and the output end of the servo motor 41 is fixedly connected to the large wheel of the swing cam 42, and the rotating shaft of the servo motor 41 and the central axis of the large wheel of the swing cam 42 coincide with each other. The drill rod 12 of the drilling mechanism 1 is connected to the output end of the sampling drive motor 43, and the lower part of the sampling drive motor 43 is provided with an arc groove, and the wheel axle of the small wheel of the swing cam 42 is clamped in the arc groove and can move along the arc of the arc groove. A plurality of independently suspended wheels 45 are installed at the bottom of the unmanned vehicle, and the independently suspended wheels 45 have built-in hub motors.

[0053] In this embodiment, the wheel hub motor, servo motor 41, sampling drive motor 43, and air supply mechanism 2 are all electrically connected to the remote control system through wireless signals or wired signals. When the unmanned vehicle 4 is working, the wheel hub motor is controlled by the remote control system to move the unmanned vehicle 4. At the same time, the sampling drive motor 43 and the air supply mechanism 2 are started. The sampling drive motor 43 drives the drill bit 13 to rotate. The air supply mechanism 2 is used to ventilate the air channel 131 of the drill bit 13. The initial state of the drilling mechanism 1 is horizontal. The servo motor 41 is started. The servo motor 41 drives the large wheel of the swing cam 42 to rotate clockwise, thereby causing the small wheel of the swing cam 42 to rotate clockwise. Due to the limitation of the arc groove, the small wheel of the swing cam 42 moves to the right in the arc groove, thereby causing the sampling drive motor 43 to be lifted up, thereby causing the end of the drilling mechanism 1 to tilt downward, thereby adjusting the angle of the drilling mechanism 1 relative to the grain pile so that the drill bit 13 is at a suitable angle to drill below the grain pile, thereby adapting to different drilling environments.

[0054] In this embodiment, the independently suspended wheels 45 at the lower part of the chassis of the unmanned vehicle 4 are fixed by steel sheets. During the movement of the unmanned vehicle 4, the uneven stacking of grain in the grain pile may cause the unmanned vehicle 4 to bump. At this time, the steel sheet itself has a certain elasticity, and the bending of the steel sheet produces elastic support to reduce the bumps during the movement of the unmanned vehicle 4, so that the unmanned vehicle 4 can adapt to more complex terrains and run more smoothly.

[0055] In this embodiment, the independently suspended wheels 45 at the bottom of the unmanned vehicle 4 are all equipped with hub motors, which can independently control the free rotation and start and stop of the independently suspended wheels 45. When the unmanned vehicle 4 needs to turn, the left and right hub motors can be controlled respectively to drive the independently suspended wheels to rotate in different directions, so that the unmanned vehicle 4 can rotate horizontally with the center of the vehicle body as the axis, thereby achieving a smaller turning radius to adapt to different driving environments.

[0056] Furthermore, the chassis of the unmanned vehicle 4 is provided with eight independently suspended wheels 45 .

[0057] Furthermore, the tires of the independent suspension wheels are rubber all-terrain tires, which are soft tires that can better adapt to changes in terrain and have strong passability and autonomous escape capabilities.

[0058] Furthermore, a power supply device is installed on the unmanned vehicle 4 , and the power supply device is used to supply power to the wheel hub motor, the servo motor 41 , the sampling drive motor 43 , and the air supply mechanism 2 .

[0059] It should be noted that the above detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by ordinary technicians in the technical field to which the present application belongs.

[0060] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments described in the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0061] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0062] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products, or apparatuses.

[0063] For ease of description, spatially relative terms, such as "above", "above", "on the upper surface of", "above", etc., may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, such as rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0064] In the above detailed description, reference is made to the accompanying drawings, which form a part of this document. In the accompanying drawings, similar symbols typically identify similar components unless the context indicates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be used, and other changes may be made, without departing from the spirit or scope of the subject matter presented herein.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An unmanned grain pile sampling vehicle device, characterized in that: The invention comprises a drilling mechanism (1) and an air supply mechanism (2), wherein the drilling mechanism (1) comprises a housing (11), a drill rod (12) and a drill bit (13), wherein the drill rod (12) is installed inside the housing (11), the drill rod (12) and the housing (11) are sealed and connected, and the drill rod (12) can rotate relative to the housing (11), and the upper end of the drill rod (12) is detachably fixedly connected to a driving rod, and the driving rod is used to drive the drill rod (12) to rotate. ) rotates around its own axis, the lower end of the drill rod (12) is detachably fixedly connected to the drill bit (13), the drill bit (13) is in the shape of a cone with a wide top and a narrow bottom, an air passage (131) is provided in the drill bit (13) and is sealed and connected to the air supply mechanism (2), and a spiral blade (132) is provided on the outer surface of the drill bit (13), and the pitch of the spiral blade (132) matches the size of the grain particles to be sampled.

2. The unmanned grain pile sampling vehicle device according to claim 1 is characterized in that: The width of the spiral blade (132) is greater than half the size of grain particles to be sampled.

3. The unmanned grain pile sampling vehicle device according to claim 1 is characterized in that: The drill rod (12) is provided with a vertical channel (121), one end of the vertical channel (121) is in sealed communication with the air supply mechanism (2), and the other end of the vertical channel (121) is in sealed communication with the air channel (131).

4. The unmanned grain pile sampling vehicle device according to claim 3 is characterized in that: An annular channel (123) is provided on the outer circumference of the drill rod (12), and a plurality of horizontal channels (122) are provided on the drill rod (12) along the radial direction of its cross section; the vertical channel (121) and the annular channel (123) are connected to each other via the horizontal channel (122), and the annular channel (123) is sealed and connected to the air supply mechanism (2).

5. The unmanned grain pile sampling vehicle device according to claim 4 is characterized in that: The housing (11) is provided with a vent (111), one end of the vent (111) being in sealed communication with the annular channel (123), and the other end of the vent (111) being in sealed communication with the air supply mechanism (2).

6. The unmanned grain pile sampling vehicle device according to claim 1, characterized in that: A sealed bearing (14) is installed between the housing (11) and the drill rod (12), and the housing (11) and the drill rod (12) are overfitted.

7. The unmanned grain pile sampling vehicle device according to claim 6, characterized in that: A shoulder (124) is provided on the side surface of the drill rod (12), the upper end surface of the shoulder (124) abuts against the lower end surface of the drill rod (12), an annular groove is provided on the side surface of the drill rod (12), the height of the annular groove matches the height of the upper end surface of the sealing bearing (14), and a retaining ring (15) is installed in the annular groove.

8. The unmanned grain pile sampling vehicle device according to claim 1, characterized in that: The air supply mechanism (2) comprises a cylinder body (21), a piston (22) and a piston driving mechanism. The upper end of the cylinder body (21) is provided with an air guide hole I (211), and the side wall is provided with an air guide hole II (212). A one-way valve I (24) is installed at the outer end of the air guide hole I (211), and a one-way valve II (25) is installed at the outer end of the air guide hole II (212). The piston driving mechanism is used to drive the piston (22) to move up and down reciprocatingly. When the piston (22) moves downward to the lower limit position, the one-way valve I (24) is connected inwardly and the one-way valve II (25) is closed; when the piston (22) moves from the lower limit position to the upper limit position, the one-way valve II (25) is connected outwardly and the one-way valve I (24) is closed.

9. The unmanned grain pile sampling vehicle device according to claim 8, characterized in that: The piston driving mechanism comprises a motor (231), a camshaft (232), a piston connecting rod (233) and a connecting pin (234); the motor (231) is fixedly connected to the cylinder body (21); the camshaft (232) is rotationally connected to the cylinder body (21); one end of the cam on the camshaft (232) away from the camshaft (232) is fixedly connected to the output shaft of the motor (231); one end of the piston connecting rod (233) is rotationally connected to the camshaft (232), and the other end is rotationally connected to the connecting pin (234); and the connecting pin (234) is fixedly connected to the piston (22).

10. The unmanned grain pile sampling vehicle device according to claim 1, characterized in that: The invention also comprises an unmanned vehicle (4), wherein the drilling mechanism (1) and the air supply mechanism (2) are mounted on the unmanned vehicle (4), a rotating shaft (44) is mounted on the unmanned vehicle (4), the drilling mechanism (1) is movably connected to the rotating shaft (44), and the drilling mechanism (1) can rotate around the axis of the rotating shaft (44), and a servo motor (41) is mounted on the unmanned vehicle (4), the output end of the servo motor (41) is fixedly connected to the large wheel of the swing cam (42), and the servo motor (41) is The rotating shaft of the (41) coincides with the central axis of the large wheel of the swing cam (42), the drill rod (12) of the drilling mechanism (1) is connected to the output end of the sampling drive motor (43), the lower part of the sampling drive motor (43) is provided with an arc groove, the wheel axle of the small wheel of the swing cam (42) is clamped in the arc groove and can move along the arc of the arc groove, and a plurality of independently suspended wheels (45) are installed at the bottom of the unmanned vehicle, and the independently suspended wheels (45) are equipped with hub motors.

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