Sampling tube grabbing mechanism and grain storage bin grain detection device

Abstract

The present invention discloses a sampling tube grasping mechanism and a grain storage bin grain detection device, wherein the sampling tube grasping mechanism comprises a base plate, a first motor and a second motor, a first rotary wheel, a lifting wheel, a transmission seat, a connecting rod, a clamping claw, a guide mechanism and a second rotary wheel. The first motor and the second motor are respectively driven by setting the first rotary wheel and the second rotary wheel, wherein the first rotary wheel drives the lifting wheel to move up and down, and then the lifting wheel drives the transmission seat to move up and down, and then drives the connecting rod to move up and down, and finally drives the clamping claw to open and close to clamp the sampling tube, and enables the sampling tube to move up and down accordingly. The second rotary wheel drives the guide mechanism to rotate, and since the guide mechanism is connected to the clamping claw, the second rotary wheel can drive the clamping claw to rotate. The sampling tube grasping mechanism provided in the embodiment of the present application has a high degree of automation, is easy to operate, and has a controllable tightening force, which reduces labor costs and avoids safety hazards caused by the sampling tube being too loosely connected during manual docking.

Description

Technical Field

[0001] The present invention relates to the technical field of grain detection, and in particular to a sampling tube grabbing mechanism and a grain detection device for a grain storage bin. Background Art

[0002] During storage, grain quality is affected by a variety of factors, such as temperature, humidity, and storage time. The quality of grain within a silo, especially the surface layer, often differs from that of the grain within. For this reason, existing grain storage silo testing devices utilize sampling tubes inserted at varying depths and locations within the silo to obtain more representative samples, thereby more accurately reflecting the quality of the entire silo.

[0003] However, due to the varying depths of granaries, when encountering a deeper granary or when sampling grain at different depths, the length of the sampling tube needs to be adaptively extended. Related art includes sampling devices formed by docking multiple sampling tubes. For example, in patent document CN201555727U, multiple sampling tubes are docked together using a threaded connection.

[0004] However, in the related art, the docking of multiple sampling tubes is usually achieved by manual operation, which has the problems of complex operation, poor safety and low degree of automation. Summary of the Invention

[0005] The present invention discloses a sampling tube grabbing mechanism and a grain detection device for a grain storage bin, so as to at least partially improve the above technical problems.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions:

[0007] On the one hand, an embodiment of the present application provides a sampling tube grasping mechanism for clamping and rotating a sampling tube, the sampling tube grasping mechanism comprising: a base plate, a first motor and a second motor, a first rotating wheel, a lifting wheel, a transmission seat, a connecting rod, a clamping claw, a guide mechanism, and a second rotating wheel. The first motor and the second motor are disposed on the base plate. The first rotating wheel is connected to the first motor, and the first motor is configured to drive the first rotating wheel to rotate. The lifting wheel is threadedly engaged in the first rotating wheel, and the first rotating wheel is configured to drive the lifting wheel to move up and down. The transmission seat is disposed on the periphery of the lifting wheel and is fixedly connected to the lifting wheel. One end of the connecting rod is hinged to the transmission seat. The clamping claw is connected to the other end of the connecting rod, and the connecting rod is configured to drive the clamping claw to open and close to clamp the sampling tube. The guide mechanism is connected to the clamping claw, and the guide mechanism is used to guide the clamping claw to move along a specified path to achieve the opening and closing of the clamping claw. The second rotating wheel is connected to the guide mechanism and is in transmission connection with the second motor. The second rotating wheel is configured to drive the clamping claw to rotate so as to rotate the sampling tube.

[0008] In one embodiment, the second rotating wheel is provided with an avoidance channel, and the connecting rod passes through the avoidance channel.

[0009] In one embodiment, the guide mechanism includes: a housing and a guide member, the housing is connected to the end surface of the second rotating wheel, a guide groove is provided on the housing, and the guide member is connected to the clamping claw and embedded in the guide groove.

[0010] In one embodiment, the guide groove is a circular hole-shaped structure, the guide member is a disc-shaped structure, and the guide member is eccentrically arranged in the guide groove.

[0011] In one embodiment, the clamping jaw includes: a body, a clamping portion and an elastic member, the clamping portion is connected to the elastic member and is slidably connected to the body, the body is provided with a compression groove, and the elastic member is provided in the compression groove.

[0012] In one embodiment, the clamping claw further includes: a first rod and a second rod, the first rod being arranged in the compression groove, one end of the first rod being connected to the clamping portion, the other end of the first rod extending out of the main body, the second rod being connected to the other end of the first rod and the second rod being arranged perpendicular to the first rod, the other end of the second rod being connected to the main body, and the elastic member being sleeved around the outer periphery of the second rod.

[0013] In one embodiment, the clamping jaw is rotatably connected to the connecting rod.

[0014] In one embodiment, the first motor is engaged with the first rotating wheel;

[0015] And / or, the second motor is connected to the second rotating wheel via a belt transmission.

[0016] On the other hand, an embodiment of the present application also provides a grain storage bin grain detection device, including the sampling tube grabbing mechanism as described above.

[0017] In one embodiment, the grain storage bin food detection device further includes: a vacuum pipe, the vacuum pipe is connected to the base plate, the vacuum pipe is passed through the interior of the lifting wheel and the transmission seat, and is selectively sealed and docked with the sampling tube.

[0018] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0019] The sampling tube grasping mechanism provided in the embodiment of the present application is driven by a first motor and a second motor respectively, wherein the first wheel drives the lifting wheel to move up and down, and then the lifting wheel drives the transmission seat to move up and down, and then drives the connecting rod to move up and down, and finally drives the clamp to open and close to clamp the sampling tube, and enables the sampling tube to move up and down accordingly. The second wheel drives the guide mechanism to rotate, and since the guide mechanism is connected to the clamp, the second wheel can drive the clamp to rotate, and then enable the clamp to clamp the sampling tube and drive the sampling tube to move and rotate. In the embodiment of the present application, the operation of driving the sampling tube to move and rotate is realized by the sampling tube grasping mechanism, and then the sampling tube grasping mechanism can be used to complete the docking of multiple sampling tubes, which not only reduces labor costs, but also is simple to operate, has a high degree of automation, and eliminates the safety hazards that exist when manually docking sampling tubes. When the above-mentioned sampling tube grabbing mechanism is applied to the grain detection device of the grain storage bin, it can also reduce labor costs, and has simple operation, high degree of automation, and eliminates the safety hazards when manually docking the sampling tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A structural schematic diagram of a sampling tube grabbing mechanism in one embodiment of the present application is shown.

[0022] Figure 2 A cross-sectional view of a sampling tube grabbing mechanism in one embodiment of the present application is shown.

[0023] Figure 3 A schematic diagram showing the cooperation between a clamping claw and a connecting rod in a sampling tube grasping mechanism in one embodiment of the present application is shown.

[0024] Figure 4 A schematic structural diagram of a clamping claw in a sampling tube grasping mechanism in one embodiment of the present application is shown.

[0025] Figure 5 A cross-sectional view of a clamping claw in a sampling tube grasping mechanism in one embodiment of the present application is shown.

[0026] Figure 6 A structural schematic diagram of a sampling tube grasping mechanism from another perspective in one embodiment of the present application is shown.

[0027] Figure 7 A cross-sectional view from another perspective of a sampling tube grasping mechanism in one embodiment of the present application is shown.

[0028] Figure 8 for Figure 7 Enlarged view of point A in the middle.

[0029] Figure 9 A structural diagram of a grain detection device for a grain storage bin in one embodiment of the present application is shown.

[0030] In the figure: 1. Grain detection device for grain storage bin; 10. Sampling tube grasping mechanism; 110. First motor; 120. Second motor; 130. First rotating wheel; 140. Lifting wheel; 150. Transmission seat; 160. Connecting rod; 170. Clamping claw; 171. Main body; 171a. Compression groove; 172. Clamping part; 173. Elastic member; 174. First rod member; 175. Second rod member; 180. Guide mechanism; 181. Housing; 181a. Guide groove; 182. Guide member; 190. Second rotating wheel; 191. Avoidance channel; 20. Vacuum pipe; 2. Sampling tube; 3. Belt; 4. Base plate. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.

[0032] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0033] The inventive concept of this application is described here:

[0034] Grain storage monitoring devices are critical equipment for ensuring safe grain storage and management. These devices utilize modern electronic technologies, such as computers, sensors, and communications, to collect and process various physical parameters within the silo, enabling real-time monitoring and precise management of grain storage conditions.

[0035] While stored in a granary, grain quality is affected by a variety of factors, such as temperature, humidity, and storage time. The quality of grain within the granary, particularly the grain on the surface, often differs from that within. For this reason, existing grain storage silo testing devices utilize sampling tubes inserted into the silo at varying depths and locations to obtain more representative samples, thereby more accurately reflecting the quality of the entire silo.

[0036] However, due to the varying depths of granaries, when encountering a deeper granary or when sampling grain at different depths, the length of the sampling tube needs to be adaptively extended. When encountering a shallow granary, if the sampling tube is too long, it will be difficult to extract a representative sample.

[0037] In the related art, there is a sampling device formed by connecting and assembling multiple sampling tubes. For example, in the patent document with publication number CN201555727U, multiple sampling tubes are connected together by threaded connection.

[0038] However, in the related art, the docking of multiple sampling tubes is usually achieved by manual operation, which has the problems of complex operation, poor safety and low degree of automation.

[0039] Based on this, the inventor provides a sampling tube grabbing mechanism, and enables the sampling tube grabbing mechanism to simultaneously have the function of moving the sampling tube and rotating the sampling tube, thereby replacing manual labor to realize the automatic docking of the sampling tube, simplifying the docking operation process of the sampling tube, and avoiding the safety hazards of manual docking of the sampling tube.

[0040] The following is combined with Figures 1 to 9 , the sampling tube grabbing mechanism 10 and the grain storage bin grain detection device 1 provided in this application are described in detail through specific embodiments and their application scenarios.

[0041] Please also see Figure 1 and Figure 2 In this embodiment, the sampling tube grasping mechanism 10 may include: a base plate 4, a first motor 110, a second motor 120, a first rotating wheel 130, a lifting wheel 140, a transmission base 150, a connecting rod 160, a clamping claw 170, a guide mechanism 180, and a second rotating wheel 190. The base plate 4 may serve as a connection base for other components. The embodiment of the present application does not limit the specific structure and shape of the base plate 4. For example, in one embodiment, the base plate 4 may be configured as a flat surface structure, which facilitates the installation of other components connected to the base plate 4.

[0042] In this embodiment, both the first motor 110 and the second motor 120 can be disposed on the substrate 4 . The first motor 110 and the second motor 120 can be used to control the rotation of the first rotating wheel 130 and the second rotating wheel 190 , respectively. This embodiment of the present application does not limit the manner in which the first motor 110 controls the rotation of the first rotating wheel 130, nor does it limit the manner in which the second motor 120 controls the rotation of the second rotating wheel 190. The coordination between the first motor 110 and the first rotating wheel 130 is used as an example. In one embodiment, the output end of the first motor 110 can directly engage with the first rotating wheel 130, so that the first motor 110 drives the first rotating wheel 130 to rotate. In another embodiment, the output end of the first motor 110 and the first rotating wheel 130 can be driven by a belt 3 , which also allows the first motor 110 to drive the first rotating wheel 130 to rotate. The specific coordination method used can be determined based on actual conditions. The coordination method between the second motor 120 and the second rotating wheel 190 can refer to the coordination method between the first motor 110 and the first rotating wheel 130, and will not be further described here.

[0043] In addition, the embodiments of the present application do not limit the specific structure and form of the first rotating wheel 130 and the second rotating wheel 190. They can be specifically set according to the cooperation method between the first rotating wheel 130 and the first motor 110 and the cooperation method between the second rotating wheel 190 and the second motor 120.

[0044] In this embodiment, the lifting wheel 140 may be threadedly engaged in the first rotating wheel 130 , so that the lifting wheel 140 can be driven by the first rotating wheel 130 and move up and down relative to the first rotating wheel 130 .

[0045] The transmission base 150 can be disposed on the periphery of the lifting wheel 140 and fixedly connected to the lifting wheel 140. The transmission base 150 can serve as a carrier for other subsequent components. It is understandable that since the lifting wheel 140 needs to cooperate with the first rotating wheel 130 and the lifting wheel 140 is located inside the first rotating wheel 130, it is relatively difficult to transmit the power of the lifting wheel 140 to other components when it moves up and down. Therefore, in this embodiment, the transmission base 150 can be used to transmit the power of the aforementioned up and down movement.

[0046] In a specific embodiment, the axial length of the lifting wheel 140 can be greater than the axial length of the first rotating wheel 130. In this way, one end of the lifting wheel 140 can extend beyond the first rotating wheel 130. Then, the transmission seat 150 can be connected to the portion of the lifting wheel 140 extending beyond the first rotating wheel 130 and enclose this portion within the transmission seat 150. In this way, the possibility of damage to the lifting wheel 140 caused by external environmental influences can be avoided or reduced.

[0047] One end of the connecting rod 160 can be hinged to the transmission seat 150, and the connecting rod 160 can be used to receive the aforementioned power for up and down movement. Since the connecting rod 160 is hinged to the transmission seat 150, the connecting rod 160 can transmit the power for up and down movement to the subsequent components, and can also transmit the power for left and right movement to the subsequent components, which is conducive to making the subsequent components more flexible.

[0048] Please also see Figure 1 and Figure 3 The clamping jaw 170 can be connected to the other end of the connecting rod 160 and is used to receive the power transmitted from the connecting rod 160. In this embodiment, the clamping jaw 170 can be opened and closed under the drive of the connecting rod 160 to clamp or release the sampling tube 2. In this embodiment, two clamping jaws 170 can be provided, and the two clamping jaws 170 can be arranged opposite to each other. Under the drive of the connecting rod 160, the two clamping jaws 170 can approach each other to clamp the sampling tube 2, and the two clamping jaws 170 can also be driven away from each other to release the sampling tube 2.

[0049] The present embodiment does not limit the specific structure and form of the clamping jaw 170. Please also refer to Figure 1 、 Figure 4 and Figure 5For example, in one embodiment, the clamping jaw 170 may include: a main body 171, a clamping portion 172 and an elastic member 173. The clamping portion 172 may be connected to the elastic member 173 and slidably connected to the main body 171. In a preferred embodiment, the surface of the clamping portion 172 used to contact and clamp the sampling tube 2 may be set to an arc surface, so that the cross-sectional area of the clamping portion 172 is larger during the process of clamping the sampling tube 2, thereby facilitating the clamping jaw 170 to clamp the sampling tube 2 more stably.

[0050] The main body 171 can be provided with a compression groove 171a, and the elastic member 173 can be provided in the compression groove 171a. The compression groove 171a can provide a movable space for the main body 171, so that the elastic member 173 drives the main body 171 to move up and down. That is to say, in this embodiment, the clamping portion 172 can move relative to the main body 171, and the elastic force of the elastic member 173 is used as the power to drive the clamping portion 172 to move. Specifically, after the clamping jaw 170 clamps a sampling tube 2, the first connecting rod 160 continues to drive the clamping jaw 170 to move downward, and the docking with the other sampling tube 2 is completed, thereby preparing for the subsequent screwing of the two sampling tubes 2 together. It is understandable that after the two sampling tubes 2 are docked, it is necessary to apply external force to make the two sampling tubes 2 abut against each other, so that the two sampling tubes 2 can be better threaded together. At the same time, it is necessary to prevent the two sampling tubes 2 from being subjected to excessive pressure from each other after abutting each other, which could lead to damage. Therefore, the aforementioned elastic member 173 can serve as a buffer. When the two sampling tubes 2 abut and have a certain pressure, the elastic member 173 can drive the clamping portion 172 to move upward to ensure that the two sampling tubes 2 abut tightly while preventing excessive pressure from being applied between the two sampling tubes 2. It is understood that in a preferred embodiment, two connecting rods 160 can also be provided, and each connecting rod 160 is respectively connected to a clamping jaw 170.

[0051] Please refer again Figure 1 、 Figure 4 and Figure 5In a more specific embodiment, the clamping jaw 170 may further include a first rod 174 and a second rod 175. The first rod 174 may be partially inserted into the compression groove 171a, and one end of the first rod 174 may be connected to the clamping portion 172, while the other end may extend horizontally from the body 171. The second rod 175 may be connected to the other end of the first rod 174 and may be arranged perpendicular to the first rod 174, that is, the second rod 175 may be arranged vertically. The other end of the second rod 175 may be connected to the body 171, and the elastic member 173 may be sleeved around the outer periphery of the second rod 175. In other words, in this embodiment, the elastic member 173 is disposed on the body 171 on the side opposite the clamping portion 172. This facilitates assembly of the entire clamping jaw 170.

[0052] Also, please refer again to Figure 1-Figure 3 In another embodiment, the clamping jaw 170 can be rotatably connected to the connecting rod 160, and the two ends of the connecting rod 160 are staggered in the vertical direction. Specifically, in this embodiment, the end of the connecting rod 160 connected to the clamping jaw 170 is arranged closer to the inside than the end of the connecting rod 160 away from the clamping jaw 170. In this way, when the connecting rod 160 drives the clamping jaw 170, the movement trajectory of the clamping jaw 170 is arc-shaped. That is to say, in this embodiment, when the clamping jaw 170 is driven by the connecting rod 160, the operations of clamping the sampling tube 2 and driving the sampling tube 2 to move downward are performed simultaneously, which is conducive to improving the working efficiency of the clamping jaw 170.

[0053] Please also see Figure 3 and Figure 6 The guide mechanism 180 can be connected to the clamping jaw 170 , and the guide mechanism 180 can be used to guide the clamping jaw 170 to move along a specified path to achieve the opening and closing of the clamping jaw 170 .

[0054] The second rotating wheel 190 can be connected to the guide mechanism 180 and is in transmission connection with the second motor 120. The second rotating wheel 190 can be configured to drive the clamping claw 170 to rotate, and then when the clamping sample tube 2 is clamped, the sample tube 2 can be driven to rotate. Specifically, after the two sample tubes 2 are docked, the second rotating wheel 190 can drive one of the sample tubes 2 to rotate. Based on the elastic pressure applied by the elastic member 173, a threaded connection between the two sample tubes 2 can be achieved, and the two sample tubes 2 can be tightened. In this embodiment, the rotation force of the second rotating wheel 190 is controllable, and then the tightening force of the two sample tubes 2 can be controlled during the tightening process, and it is ensured that the two sample tubes 2 can be tightened in place, avoiding the safety hazard caused by insufficient tightening of the sample tubes 2 when the sample tubes 2 are manually docked.

[0055] Please also see Figure 7 and Figure 8 In one embodiment, the second rotating wheel 190 may be provided with an escape channel 191 through which the connecting rod 160 can pass. This can help reduce the size of the entire sampling tube grasping mechanism 10. Furthermore, the escape channel 191 can also protect and limit the connecting rod 160, thereby ensuring that the connecting rod 160 can accurately move up and down within the escape channel 191, thereby ensuring that the clamping jaws 170 can accurately open and close.

[0056] Please refer again Figure 1 and Figure 6 Furthermore, the present embodiment does not limit the specific form of the guide mechanism 180. For example, in one embodiment, the guide mechanism 180 may be in the form of a waist-shaped hole to guide the jaws 170 to move inward while moving downward. For another example, in this embodiment, the guide mechanism 180 may include: a housing 181 and a guide member 182.

[0057] The housing 181 can be connected to the end surface of the second rotating wheel 190, and a guide groove 181a can be provided on the housing 181. The provision of the housing 181 can prevent or reduce the possibility of damage to the waist-shaped hole. The guide member 182 can be connected to the clamping jaw 170 and embedded in the guide groove 181a. This allows the clamping jaw 170 to move along the guide of the guide groove 181a, thereby ensuring and realizing the opening and closing function of the clamping jaw 170. The embodiment of the present application also does not limit the specific form of the guide groove 181a. For example, in one embodiment, the guide groove 181a can also be set in the form of a waist-shaped hole.

[0058] For example, in another embodiment, the guide groove 181a can be configured as a circular hole-shaped structure, the guide member 182 can be configured as a disc-shaped structure, and the guide member 182 can be eccentrically disposed in the guide groove 181a. The guide member 182 can rotate in the guide groove 181a to drive the clamping jaw 170 to move. In addition, when the guide member 182 rotates in the guide groove 181a, since the guide member 182 is eccentrically disposed, the clamping jaw 170 can be opened and closed. It should be noted that the embodiment of the present application does not limit the depth of the guide groove 181a and the thickness of the guide member 182, and they can be set according to actual conditions.

[0059] For details, please refer to Figure 3 and Figure 6The guide groove 181a can be set to multiple, and the number of guide members 182 can be set to be consistent with the number of guide grooves 181a. This can improve the fault tolerance of the entire guide mechanism 180. When one pair of guide members 182 and guide grooves 181a is damaged or fails, the guide mechanism 180 can still guide the clamping jaw 170.

[0060] In this embodiment, taking the example of four guide grooves 181a, the four guide grooves 181a can be set to a parallelogram structure with their connecting lines connected end to end, and the connecting rod 160 can be hinged to the clamping jaw 170, so that the connecting rod 160 can transmit force to the clamping jaw 170 and drive the clamping jaw 170 to move downward and tilted to clamp the sampling tube 2. The guide member 182 can drive the clamping jaw to move horizontally relative to the guide groove 181a, avoiding the movement trajectory of the part of the clamping jaw 170 close to the connecting rod 160 being longer than the part of the clamping jaw 170 away from the connecting rod 160, thereby facilitating the clamping of the sampling tube 2 by the clamping jaw 170 and improving the clamping stability of the clamping jaw 170.

[0061] In summary, the sampling tube grasping mechanism 10 provided in the embodiment of the present application is provided with a first motor 110 and a second motor 120 to drive the first rotating wheel 130 and the second rotating wheel 190 respectively, wherein the first rotating wheel 130 drives the lifting wheel 140 to move up and down, and then the lifting wheel 140 drives the transmission seat 150 to move up and down, and then drives the connecting rod 160 to move up and down, and finally drives the clamping claw 170 to open and close to clamp the sampling tube 2. Furthermore, since the clamping claw 170 includes an elastic member 173, in the two longitudinally adjacent sampling tubes 2, the clamping claw 170 clamps The upper sampling tube 2 is threadably connected to the lower sampling tube 2. Since the clamping portion 172 of the clamping jaw 170 can be subjected to the pre-tightening force applied by the elastic member 173, the thread of the upper sampling tube 2 can be kept in contact with the thread of the lower sampling tube 2. When the clamping jaw 170 is driven by the second motor 120 to rotate, the upper sampling tube 2 can automatically adapt to the height and angle difference of the lower sampling tube 2, so that the threads of the two can be accurately rotated to form a thread pair, and then the two sampling tubes 2 can be rotated and tightened. Specifically, the second rotating wheel 190 drives the guide mechanism 180 to rotate. Since the guide mechanism 180 is connected to the clamping jaw 170, the second rotating wheel 190 can drive the clamping jaw 170 to rotate, thereby enabling the clamping jaw 170 to clamp the sampling tube 2 and drive the sampling tube 2 to move and rotate, and the rotation force of the second rotating wheel 190 is controllable, thereby enabling the tightening force of the sampling tube 2 when the threaded connection is controlled, and ensuring that the sampling tube 2 is tightened in place. In the embodiment of the present application, the operation of driving the sampling tube 2 to move and rotate is achieved through the sampling tube grasping mechanism 10, and the sampling tube grasping mechanism 10 can be used to complete the docking of multiple sampling tubes 2, which not only reduces labor costs, but also has simple operation, controllable tightening force, high degree of automation, and eliminates the safety hazards caused by the sampling tube 2 being too loose when the sampling tube 2 is manually docked.

[0062] See also Figure 2 and Figure 9 The embodiment of the present application further provides a grain storage silo grain detection device 1, which can include any of the sampling tube gripping mechanisms 10 described above, and can also include a vacuum pipe 20, wherein the vacuum pipe 20 can be connected to the base plate 4, and the vacuum pipe 20 can be arranged inside the lifting wheel 140 and the transmission base 150. It can be understood that the vacuum pipe 20 is a vacuum environment, and the vacuum pipe 20 can selectively be sealed and docked with the sampling tube 2. The grain sample sucked by the sampling tube 2 can pass through the vacuum pipe 20 and then be sent to a subsequent detection mechanism.

[0063] In summary, since the grain storage bin grain detection device 1 provided in the embodiment of the present application adopts the above-mentioned sampling tube grabbing mechanism 10, the grain storage bin grain detection device 1 provided in the embodiment of the present application can also solve the problems in the prior art that the grain storage bin grain detection device 1 is manually operated to dock the sampling tube 2, resulting in complex operation, poor safety and low degree of automation.

[0064] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0065] Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in reverse order depending on the functions involved. For example, the methods described may be performed in an order different from that described, and various steps may be added, omitted, or combined. Furthermore, features described with reference to certain examples may be combined in other examples.

[0066] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. A sampling tube grasping mechanism, characterized in that: Used to clamp and rotate the sampling tube, the sampling tube grasping mechanism includes: substrate; a first motor and a second motor, wherein the first motor and the second motor are arranged on the substrate; a first rotating wheel, wherein the first rotating wheel is connected to the first motor, and the first motor is configured to drive the first rotating wheel to rotate; a lifting wheel, wherein the lifting wheel is threadedly engaged with the first rotating wheel, and the first rotating wheel is configured to drive the lifting wheel to move up and down; a transmission seat, the transmission seat being arranged on the periphery of the lifting wheel and being fixedly connected to the lifting wheel; a connecting rod, one end of which is hinged to the transmission seat; A clamping jaw, the clamping jaw being connected to the other end of the connecting rod, the two clamping jaws being arranged opposite to each other, and the connecting rod being configured to drive the clamping jaws to open and close so as to clamp the sample tube; A guide mechanism, the guide mechanism being connected to the clamping jaw, the guide mechanism being used to guide the clamping jaw to move along a specified path to achieve opening and closing of the clamping jaw; and a second rotating wheel connected to the guide mechanism and in transmission connection with the second motor, the second rotating wheel being configured to drive the clamping jaw to rotate so as to rotate the sampling tube; The clamping jaw comprises a body, a clamping portion, and an elastic member. The clamping portion is connected to the elastic member and is slidably connected to the body. The body is provided with a compression groove, and the elastic member is disposed in the compression groove. The clamping jaw is rotatably connected to the connecting rod, and the two ends of the connecting rod are staggered in the vertical direction. The lifting wheel is used to connect to a vacuum pipe, and the vacuum pipe is arranged inside the lifting wheel and the transmission seat. When the clamping jaws rotate to tighten the sampling tube, the vacuum pipe is sealed and connected to the sampling tube.

2. The sampling tube grabbing mechanism according to claim 1, characterized in that: The second rotating wheel is provided with an avoidance channel through which the connecting rod passes.

3. The sampling tube grasping mechanism according to claim 1, characterized in that: The guide mechanism includes: a shell and a guide member, the shell is connected to the end surface of the second rotating wheel, a guide groove is provided on the shell, and the guide member is connected to the clamping claw and embedded in the guide groove.

4. The sampling tube grasping mechanism according to claim 3, characterized in that: The guide groove is a circular hole-shaped structure, the guide member is a circular sheet-shaped structure, and the guide member is eccentrically arranged in the guide groove.

5. The sampling tube grasping mechanism according to claim 1, characterized in that: The clamping claw also includes: a first rod and a second rod, the first rod is arranged in the compression groove, one end of the first rod is connected to the clamping portion, the other end of the first rod extends out of the body, the second rod is connected to the other end of the first rod and the second rod is arranged perpendicular to the first rod, the other end of the second rod is connected to the body, and the elastic member is sleeved on the outer periphery of the second rod.

6. The sampling tube grasping mechanism according to claim 1, characterized in that: The clamping claw is rotatably connected to the connecting rod.

7. The sampling tube grasping mechanism according to claim 1, characterized in that: The first motor is engaged with the first rotating wheel; And / or, the second motor is connected to the second rotating wheel via a belt transmission.

8. A grain storage device, characterized in that: It comprises a sampling tube grasping mechanism as described in any one of claims 1-7.

9. The grain storage bin food detection device according to claim 8, characterized in that: The grain storage bin grain detection device also includes: a vacuum pipe, which is connected to the base plate, passes through the interior of the lifting wheel and the transmission seat, and is selectively sealed and docked with the sampling tube.

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