Grain quantity monitoring device

Abstract

The invention relates to a grain quantity monitoring device which comprises a device base and a detection cylinder internally provided with a laser distance measuring sensor, the bottom of the detection cylinder is provided with a detection cylinder lens, and the grain quantity monitoring device further comprises an equipment box rotationally assembled on the device base and provided with an opening in the lower side. A side plate of the equipment box is fixedly provided with a mounting shaft with the axis extending in the front-back direction, the upper end of the detection cylinder is rotationally assembled on the mounting shaft, and the rotating axis of the equipment box perpendicularly intersects with the axis of the mounting shaft. In the rotating process of the detection cylinder, a detection station for enabling a detection cylinder lens to extend out of the lower side opening of the equipment box and a storage station for enabling the detection cylinder to be stored in the equipment box are arranged, and a dustproof plate for shielding the lower side opening when the detection cylinder is located at the storage station is arranged at the lower side opening of the equipment box. The grain quantity monitoring device provided by the invention can avoid dust covering when not in use, and also can avoid generation of a scanning blind area due to the existence of the main cylinder.

Description

Technical Field

[0001] The invention relates to supporting equipment in the technical field of bulk grain storage, and in particular to a grain quantity monitoring device. Background Art

[0002] During the storage of bulk grain, a grain quantity monitoring device is needed to monitor the quantity of bulk grain in the warehouse.

[0003] Existing bulk grain quantity monitoring devices, such as "a grain quantity monitoring device" disclosed in Chinese patent CN108548483A, include a main cylinder with a rotating axis extending in the up-down direction, a secondary cylinder with a rotating axis horizontally arranged and rotatably mounted on a side plate of the main cylinder, the main cylinder and the secondary cylinder are driven by respective corresponding motors, a power supply and a drive controller are arranged inside the main cylinder, and an inclination sensor and a laser ranging sensor are arranged inside the secondary cylinder.

[0004] The detection principle is as follows: the laser ranging sensor measures the coordinates of the corresponding measuring points on the surface of the grain pile, and the main cylinder drives the auxiliary cylinder to rotate, thereby realizing the coordinate measurement of all measuring points on the rotating surface of a certain radius. When the inclination of the auxiliary cylinder is adjusted, the measuring radius of the rotating surface can be adjusted.

[0005] The existing problem of this kind of grain quantity monitoring device is that when the auxiliary cylinder is vertical, the main cylinder rotates one circle, and the rotation radius of a rotation surface scanned by the laser ranging sensor in the auxiliary cylinder is the minimum monitoring radius of the entire bulk grain quantity monitoring device. This minimum monitoring radius depends on the distance between the laser ranging sensor and the rotation axis of the main cylinder. In the prior art, the auxiliary cylinder is arranged on a side plate of the main cylinder. Therefore, in the prior art, the distance between the laser ranging sensor and the axis of the main cylinder must exist, which is equivalent to the auxiliary cylinder scanning the surface of the grain pile with the rotation of the bamboo cylinder. There is a scanning blind area, that is, the grain pile area corresponding to the lower side of the main cylinder. The existence of this scanning blind area will affect the quantity monitoring accuracy of grain quantity monitoring; in addition, there is also the fact that the use environment of the entire grain quantity monitoring device is inside the warehouse, which is a dusty use environment. Especially in the process of bulk grain out of the warehouse or into the warehouse, a large amount of dust will be generated in the warehouse. This dust will adhere to the lower end of the auxiliary cylinder and affect the normal use of the laser ranging sensor. Summary of the invention

[0006] The purpose of the present invention is to provide a grain quantity monitoring device which can avoid dust coverage when not in use and can also avoid a scanning blind area caused by the existence of a main cylinder.

[0007] In order to solve the above technical problems, a technical solution of a grain quantity monitoring device in the present invention is as follows: A grain quantity monitoring device comprises a device seat and a detection tube with a laser ranging sensor arranged therein, a detection tube lens is arranged at the bottom of the detection tube, and the grain quantity monitoring device also comprises an equipment box rotatably mounted on the device seat and having an opening on the lower side, the equipment box is driven by an equipment box motor, a mounting shaft with an axis extending in a front-to-rear direction is fixedly arranged on a side panel of the equipment box, the upper end of the detection tube is rotatably mounted on the mounting shaft, the rotation axis of the equipment box intersects the axis of the mounting shaft at right angles, the detection tube is driven by the detection tube motor, and during the rotation of the detection tube, there is a detection station for making the detection tube lens extend from the lower opening of the equipment box and a storage station for making the detection tube be stored in the equipment box, and a dustproof plate for covering the lower opening when the detection tube is in the storage station is arranged at the lower opening of the equipment box.

[0008] Furthermore, the front end of the installation shaft is fixed on the front box plate of the equipment box, and the rear end of the installation shaft is fixed on the rear box plate of the equipment box. The installation shaft is located at the left end of the front box plate and the rear box plate, and the lower end of the detection cylinder is flipped from left to right through the detection station to the storage station.

[0009] Furthermore, when the detection cylinder is in the storage station, it is arranged horizontally, and a rotating sleeve connected to the mounting sleeve on the mounting shaft is fixed to the upper end of the detection cylinder. A mounting sleeve transmission tooth is arranged on the outer periphery of the upper end of the mounting sleeve, and the detection cylinder motor is located on the upper left side of the mounting shaft. A first motor shaft gear meshing with the mounting sleeve transmission tooth is arranged on the motor shaft of the detection cylinder motor.

[0010] Furthermore, the device seat has a vertically arranged fixed shaft, the top plate of the equipment box is rotatably connected to the lower end of the fixed shaft, the bottom of the fixed shaft has a mounting section extending into the interior of the equipment box, the mounting section is fixed with a mounting section gear, the equipment box motor is arranged on the top plate of the equipment box, and the motor shaft of the equipment box motor is connected to a second motor shaft gear that meshes with the mounting section gear.

[0011] Furthermore, the dustproof plate includes a left dustproof plate and a right dustproof plate, the left dustproof plate is guided and moved along the left and right directions and assembled at the bottom of the left box plate of the equipment box, a left spring is arranged between the left box plate of the equipment box and the left dustproof plate, which applies a force in the right direction to the left dustproof plate, the right dustproof plate is guided and moved along the left and right directions and assembled at the bottom of the right box plate of the equipment box, a right spring is arranged between the right box plate of the equipment box and the right dustproof plate, which applies a force in the left direction to the right dustproof plate, the detection cylinder is a cylinder, the right end of the left dustproof plate has a left recessed portion with an arc adapted to the left outer periphery of the equipment box, the left end of the right dustproof plate has a right recessed portion with an arc adapted to the right outer periphery of the equipment box, the left recess is provided with left bristles for contacting and cooperating with the left outer periphery of the detection cylinder when the detection cylinder is in the detection position, the right recess is provided with right bristles for contacting and cooperating with the right outer periphery of the detection cylinder when the detection cylinder is in the detection position, and when the detection cylinder is in the storage position, the left bristles block the left recess, and the right bristles block the right recess.

[0012] Furthermore, the right end of the left dustproof plate on the front and rear sides of the left concave portion is used to abut and cooperate with the left end of the right dustproof plate on the front and rear sides of the right concave portion.

[0013] Furthermore, the detection tube lens is a hemispherical lens, and when the detection tube rotates and switches between the detection station and the storage station, the left bristles and the right bristles are in friction contact with the lower end surface of the hemispherical lens.

[0014] Furthermore, the left spring is a left tension spring arranged between the left side of the left box plate of the equipment box and the left end of the left dustproof plate, and the right spring is a right tension spring arranged between the right box plate of the equipment box and the right end of the right dustproof plate.

[0015] Furthermore, the force exerted by the left spring on the left dustproof plate is greater than the force exerted by the right spring on the right dustproof plate, so that when the detection tube rotates to the storage position, the docking position of the left dustproof plate and the right dustproof plate is on the right side of the left-right center line of the equipment box.

[0016] The beneficial effects of the present invention are as follows: in the present invention, there is no main cylinder, but the detection cylinder is arranged inside the equipment box, the detection cylinder rotates around the installation axis to adjust the pitch angle of the laser ranging sensor, and the equipment box rotates with the detection cylinder to complete the scanning of the corresponding area radius. When the detection cylinder is arranged vertically, it is the smallest detection area. Since the rotation axis of the equipment box intersects the axis of the installation axis at right angles, the detection cylinder can scan the area directly below the axis of the equipment box, and there is no scanning blind area; when the equipment is not in use, the detection cylinder is rotated to the storage position, and then the dustproof plate covers the lower opening of the equipment box to prevent dust in the granary from covering the detection cylinder lens and affecting the normal use of the laser ranging sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein: Figure 1 It is a schematic structural diagram of an embodiment of the present invention; Figure 2 yes Figure 1 Bottom view of Figure 3 yes Figure 1 Schematic diagram of the process of the middle detection cylinder rotating from the detection station to the storage station; Figure 4 It is a schematic diagram of the state when the detection cylinder in the present invention rotates to the storage position; Figure 5 yes Figure 4 Bottom view of Figure 6 yes Figure 4 The structural diagram of the dustproof plate on the right side of the middle; 1. Device seat; 2. Fixed shaft; 3. Mounting section; 4. Mounting section gear; 5. Second motor shaft gear; 6. Equipment box motor; 7. Top plate of equipment box; 8. Left box plate of equipment box; 9. Right box plate of equipment box; 10. Front side plate of equipment box; 11. Mounting shaft; 12. Mounting sleeve; 13. First motor shaft gear; 14. Detection tube; 15. Laser ranging sensor; 16. Detection tube lens; 17. Left bristles; 18. Right bristles; 19. Left spring; 20. Right spring; 19. Left spring; 20. Right spring; 21. Left dust plate; 22. Right dust plate; 23. Rear side plate of equipment box; 24. Left concave portion; 25. Right concave portion. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are provided in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0019] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0020] An embodiment of a food quantity monitoring device of the present invention is as follows: Figures 1 to 6As shown: it includes a device base 1 and a detection tube 14 with a laser ranging sensor 15 arranged therein. When in use, the device base 1 can be fixed to the top of the granary by bolts. The detection tube is a cylindrical structure, and a detection tube lens is arranged at the bottom of the detection tube. In this embodiment, the detection tube lens is a hemispherical lens protruding toward the side away from the rotation axis of the detection tube.

[0021] The grain quantity monitoring device also includes an equipment box with an opening on the lower side, which is rotatably mounted on the device seat. The equipment box includes a box top plate and surrounding box side plates, wherein the surrounding box side plates are respectively a front side plate 10 of the equipment box, a rear side plate 23 of the equipment box, a left box plate 8 of the equipment box, and a right box plate 9 of the equipment box. The equipment box is driven by an equipment box motor 6. In this embodiment, the device seat has a vertically arranged fixed shaft 2, a box top plate 7 of the equipment box is rotatably connected to the lower end of the fixed shaft, the bottom of the fixed shaft has a mounting section 3 extending into the interior of the equipment box, a mounting section gear 4 is fixed on the mounting section, the equipment box motor 6 is arranged on the box top plate of the equipment box, and a second motor shaft gear 5 meshing with the mounting section gear 4 is connected to the motor shaft of the equipment box motor.

[0022] The upper end of the detection cylinder is rotatably assembled on the installation shaft 11. The rotation axis of the equipment box intersects the axis of the installation shaft perpendicularly. The detection cylinder is driven by the detection cylinder motor. Specifically, the front end of the installation shaft 11 is fixed to the front box plate 10 of the equipment box, and the rear end of the installation shaft is fixed to the rear box plate 23 of the equipment box. The installation shaft is located at the left end of the front box plate and the rear box plate. The upper end of the detection cylinder is fixed with a mounting sleeve 12 that is rotatably connected to the mounting shaft. The outer periphery of the upper end of the mounting sleeve 12 is provided with a mounting sleeve transmission tooth. The detection cylinder motor is located on the upper left side of the mounting shaft. The motor shaft of the detection cylinder motor is provided with a first motor shaft gear 13 that meshes with the mounting sleeve transmission tooth.

[0023] During the rotation of the detection tube, there is a detection position in which the detection tube lens extends from the lower opening of the equipment box and a storage position in which the detection tube is stored in the equipment box. A dustproof plate is provided at the lower opening of the equipment box to cover the lower opening when the detection tube is in the storage position.

[0024] The dustproof plate includes a left dustproof plate 21 and a right dustproof plate 22. The left dustproof plate 21 is guided and moved along the left-right direction and assembled at the bottom of the left box plate of the equipment box. A left spring 19 is provided between the left box plate of the equipment box and the left dustproof plate to apply a force to the left dustproof plate in the right direction. The right dustproof plate 22 is guided and moved along the left-right direction and assembled at the bottom of the right box plate of the equipment box. A right spring 20 is provided between the right box plate of the equipment box and the right dustproof plate to apply a force to the right dustproof plate in the left direction. Specifically, the left spring 19 is a left tension spring provided between the left side of the left box plate of the equipment box and the left end of the left dustproof plate, and the right spring 20 is a right tension spring provided between the right box plate of the equipment box and the right end of the right dustproof plate. The pulling force of the left spring on the left dustproof plate is greater than the pulling force of the right spring on the right dustproof plate, so that when the detection tube is rotated to the storage position, the docking position of the left dustproof plate and the right dustproof plate is on the right side of the left-right center line of the equipment box.

[0025] The right end of the left dustproof plate has a left recess 24 whose curvature matches the left periphery of the equipment box, and the left end of the right dustproof plate has a right recess 25 whose curvature matches the right periphery of the equipment box. The radius of the left recess is greater than the radius of the detection cylinder, and the radius of the right recess is greater than the radius of the detection cylinder.

[0026] The left concave portion is provided with left bristles 18 for contacting and cooperating with the left periphery of the detection cylinder when the detection cylinder is in the detection position, and the right concave portion is provided with right bristles 18 for contacting and cooperating with the right periphery of the detection cylinder when the detection cylinder is in the detection position. When the detection cylinder is in the storage position, the left bristles cover the left concave portion, and the right bristles cover the right concave portion. The length of the left bristles is set along the radial direction of the left concave portion, and the length of the left bristles is not less than the radius of the left concave portion. The length of the right bristles is set along the radial direction of the right concave portion, and the length of the right bristles is not less than the radius of the right concave portion.

[0027] The right ends of the left dustproof plates on the front and rear sides of the left concave part are used to abut against the left ends of the right dustproof plates on the front and rear sides of the right concave part. When the detection barrel rotates and switches between the detection station and the storage station, the left and right brush bristles are in friction contact with the lower end surface of the hemispherical lens.

[0028] The use process of the present invention is as follows: when there is no need to monitor the quantity of bulk grain, the detection cylinder rotates to the storage position, such as Figure 4As shown, at this time, the detection barrel is completely stored in the equipment box, the left concave part is blocked by the left brush bristles, and the right concave part is blocked by the right brush bristles. Therefore, the dust in the granary will not enter the equipment box through the left concave part and the right concave part, thereby avoiding the detection barrel lens at the end of the detection barrel from being covered with dust, and also avoiding the equipment box motor and the detection barrel motor from working in a dusty environment; when it is necessary to monitor the quantity of bulk grain, the detection barrel swings from right to left, and the detection barrel lens at the end of the detection barrel will extend between the left concave part and the right concave part, and push the left brush bristles and the right brush bristles open. The left brush bristles and the right brush bristles can wipe off the dust on the surface of the detection barrel lens. As the detection barrel continues to swing, the left dustproof plate overcomes the pulling force of the left spring, and the left dustproof plate moves to the left, and the right dustproof plate also moves to the left under the action of the right spring, ensuring that no matter what the tilt angle of the detection barrel is, there are always brush bristles in the gap between the detection barrel and the left concave part and the right concave part, thereby avoiding dust from entering the equipment box through the gap between the left concave part, the right concave part and the detection barrel. When the grain quantity monitoring device is not needed, the detection tube will swing from left to right from the detection station to the storage station. During the swinging process, the left and right bristles can still wipe the detection tube lens. The hemispherical structure of the detection tube lens can facilitate the bristles to wipe the surface of the detection tube lens until the detection tube is rotated to the storage station again.

[0029] In the above description of this specification, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected" or "connected" should be understood in a broad sense. For example, with regard to the term "connection", it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. Therefore, unless otherwise clearly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0030] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the present invention.

[0031] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinals are only used for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A grain quantity monitoring device, comprising a device base and a detection tube with a laser ranging sensor disposed therein, a detection tube lens disposed at the bottom of the detection tube, characterized in that: The grain quantity monitoring device also includes an equipment box with an opening on the lower side, which is rotatably mounted on the device base. The equipment box is driven by an equipment box motor. A mounting shaft with an axis extending in the front-to-back direction is fixedly arranged on the side panel of the equipment box. The upper end of the detection cylinder is rotatably mounted on the mounting shaft. The rotation axis of the equipment box intersects the axis of the mounting shaft at right angles. The detection cylinder is driven by the detection cylinder motor. During the rotation of the detection cylinder, there is a detection position in which the detection cylinder lens extends out of the lower opening of the equipment box and a storage position in which the detection cylinder is stored in the equipment box. A dustproof plate is arranged at the lower opening of the equipment box for covering the lower opening when the detection cylinder is in the storage position.

2. The grain quantity monitoring device according to claim 1, characterized in that: The front end of the mounting shaft is fixed to the front box plate of the equipment box, and the rear end of the mounting shaft is fixed to the rear box plate of the equipment box. The mounting shaft is located at the left end of the front box plate and the rear box plate. The lower end of the detection cylinder is flipped from left to right through the detection station to the storage station.

3. The grain quantity monitoring device according to claim 2, characterized in that: When in the storage station, the detection cylinder is arranged horizontally, and a rotating sleeve connected to the mounting sleeve on the mounting shaft is fixed to the upper end of the detection cylinder. A mounting sleeve transmission tooth is arranged on the outer periphery of the upper end of the mounting sleeve. The detection cylinder motor is located on the upper left side of the mounting shaft, and a first motor shaft gear meshing with the mounting sleeve transmission tooth is arranged on the motor shaft of the detection cylinder motor.

4. The grain quantity monitoring device according to claim 1, characterized in that: The device seat has a vertically arranged fixed shaft, the top plate of the equipment box is rotatably connected to the lower end of the fixed shaft, the bottom of the fixed shaft has a mounting section extending into the interior of the equipment box, the mounting section is fixed with a mounting section gear, the equipment box motor is arranged on the top plate of the equipment box, and the motor shaft of the equipment box motor is connected to a second motor shaft gear that meshes with the mounting section gear.

5. The grain quantity monitoring device according to any one of claims 1 to 4, characterized in that: The dustproof plate includes a left dustproof plate and a right dustproof plate, the left dustproof plate is guided and moved along the left and right directions and assembled at the bottom of the left box plate of the equipment box, a left spring is arranged between the left box plate of the equipment box and the left dustproof plate, which applies a force in the right direction to the left dustproof plate, the right dustproof plate is guided and moved along the left and right directions and assembled at the bottom of the right box plate of the equipment box, a right spring is arranged between the right box plate of the equipment box and the right dustproof plate, which applies a force in the left direction to the right dustproof plate, the detection cylinder is a cylinder, the right end of the left dustproof plate has a left recessed portion whose curvature is adapted to the left outer periphery of the equipment box, the left end of the right dustproof plate has a right recessed portion whose curvature is adapted to the right outer periphery of the equipment box, the left recess is provided with left bristles for contacting and cooperating with the left outer periphery of the detection cylinder when the detection cylinder is in the detection position, the right recess is provided with right bristles for contacting and cooperating with the right outer periphery of the detection cylinder when the detection cylinder is in the detection position, when the detection cylinder is in the storage position, the left bristles block the left recess, and the right bristles block the right recess.

6. The grain quantity monitoring device according to claim 5, characterized in that: The right ends of the left dustproof plates at the front and rear sides of the left concave portion are used for abutting and matching with the left ends of the right dustproof plates at the front and rear sides of the right concave portion.

7. The grain quantity monitoring device according to claim 5, characterized in that: The detection tube lens is a hemispherical lens. When the detection tube rotates and switches between the detection station and the storage station, the left bristles and the right bristles are in friction contact with the lower end surface of the hemispherical lens.

8. The grain quantity monitoring device according to claim 5, characterized in that: The left spring is a left tension spring arranged between the left side of the left box plate of the equipment box and the left end of the left dustproof plate, and the right spring is a right tension spring arranged between the right box plate of the equipment box and the right end of the right dustproof plate.

9. The grain quantity monitoring device according to claim 5, characterized in that: The force of the left spring on the left dustproof plate is greater than the force of the right spring on the right dustproof plate, so that when the detection tube rotates to the storage position, the docking position of the left dustproof plate and the right dustproof plate is on the right side of the left-right center line of the equipment box.

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