A three-dimensional warehouse automatic inventory system and monitoring device

Abstract

The present invention relates to the field of the inventory technology of stereoscopic warehouses, and specifically to an automatic inventory system for stereoscopic warehouses and a monitoring device thereof, including a silo and a laser sensor, and a warehouse for storing bulk materials, as a type of stereoscopic warehouse. It is divided into two categories: agricultural silos and industrial silos. When agricultural silos are used to store grain, the volume state of the stored grain can be divided into three parts, the bottom inverted cone, the middle cylindrical shape, and the top part. Along with the filling and use of grain in the silo, the grain inventory in the silo needs to be measured in time. The traditional measurement method is that the warehouse supervisor uses a handheld infrared ranging device to measure from the top of the storage point downward. Inventory is time-consuming and labor-intensive, and inventory is difficult. In addition, it is difficult to calibrate the angle of the handheld infrared ranging instrument for each measurement by manual measurement, resulting in different data for multiple measurements at a single point.

Description

Technical Field

[0001] The invention relates to the technical field of inventory counting in stereoscopic warehouses, in particular to an automatic inventory counting system and a monitoring device thereof in stereoscopic warehouses. Background Art

[0002] Three-dimensional warehousing, also known as three-dimensional warehouse, is a new concept in logistics warehousing, which uses three-dimensional warehouse equipment to achieve high-level rationalization of warehouses and automated storage and retrieval.

[0003] A warehouse for storing bulk materials is a type of three-dimensional warehouse. It is divided into two categories: agricultural silos and industrial silos. Agricultural silos are used to store granular and powdery materials such as grain and feed; industrial silos are used to store bulk materials such as coke, cement, salt, and sugar. Automatic mechanized silos can shorten the material loading and unloading process, reduce operating and maintenance costs, eliminate heavy bagging operations, and facilitate mechanized and automated operations. Therefore, they have become one of the most important forms of granaries.

[0004] When using agricultural silos to store grain, the volume of the stored grain can be divided into three parts: the bottom inverted cone, the middle cylindrical part, and the top part. From the cross-sectional view, the grain volume is a figure symmetrical about the central axis. When the grain is put in, the center is protruding and quasi-conical, and when the grain is taken out, the center is concave. With the filling and use of the grain in the silo, the grain inventory in the silo needs to be measured in time. The traditional measurement method is that the warehouse supervisor uses a handheld infrared ranging device to measure from the top of the storage point downward. This process has the following problems:

[0005] 1. Personal safety issues: when checking inventory, the warehouse manager needs to climb to the top of the silo, which is about 30 meters high. The security conditions are poor and there are certain risks.

[0006] 2. Inaccurate measurement. It is difficult to calibrate the angle of the handheld infrared distance meter each time the measurement is made manually, resulting in different data for multiple measurements at a single point.

[0007] 3. Inventory is time-consuming and labor-intensive, and it is difficult to conduct inventory. As a result, the inventory cycle is relatively long, and it is difficult to conduct real-time monitoring of material safety;

[0008] In view of this, the present invention proposes an automatic inventory system for a stereoscopic warehouse and a monitoring device thereof, which solve the above-mentioned technical problems. Summary of the invention

[0009] In order to address the deficiencies in the prior art, the present invention provides an automatic inventory monitoring device for a stereoscopic warehouse, thereby solving the problems of great safety hazards during inventory operations, time-consuming and labor-intensive inventory operations, great difficulty in inventory operations, and inaccurate measurements.

[0010] The technical solution adopted by the present invention to solve its technical problems is an automatic inventory monitoring device for a three-dimensional warehouse, including a silo and a laser sensor. The silo is a cylindrical silo, and its bottom is a conical structure that gradually shrinks downward. An inlet is provided at the top of the silo, and an outlet is provided at the bottom. A height rod is fixedly installed at the inner axial position of the silo, and the laser sensor is movably installed on the height rod inside the silo.

[0011] Preferably, a chuck is slidably mounted on the elevation rod, a delivery belt is fixedly connected to the upper part of the chuck, a winding motor is fixedly mounted on the top of the silo, and the end of the delivery belt is wound around the output shaft of the winding motor, the outer periphery of the chuck is rotated by a matching wheel, a slope rod is hingedly mounted on the outer side of the wheel, and the laser sensor is movably mounted on the slope rod.

[0012] Preferably, a plug plate is fixedly installed on the outer side of the wheel disc, a recessed slot is provided in the middle of the plug plate, the slope rod is hingedly installed in the middle slot of the plug plate, a supporting plate is fixedly installed on the bottom of the plug plate, and the slope rod is horizontally abutted against the end of the supporting plate after being flipped.

[0013] Preferably, a plurality of the slope rods are circumferentially arranged, and sedimentation grooves are provided on the upper and lower sides of the slope rods. The laser sensor is slidably installed in the sedimentation groove on the lower side, and the laser sensor faces the bottom of the silo.

[0014] Preferably, a tension spring is installed in the upper sedimentation groove of the grade rod, and the tension spring is close to the wheel disc. The base of the laser sensor is fixedly connected with a transfer rope, and one end of the transfer rope is connected to the movable end of the tension spring after passing around the end of the grade rod. A transfer wheel is rotatably installed at the bottom of the wheel disc, and the other end of the transfer rope is wound around the transfer wheel.

[0015] Preferably, the inner ring of the transfer wheel is provided with a transfer gear ring, the inner side of the wheel disc is fixedly mounted with a transfer motor, and the output shaft of the transfer motor is fixedly mounted with a transfer gear meshing with the transfer gear ring.

[0016] Preferably, a trapezoidal step surface is provided on the upper side of the slope rod, an adjusting claw is slidably installed on the wheel disc, one end of the adjusting claw slides and abuts against the step surface after passing through the plug plate, a tension spring is connected between the upper side of the slope rod and the plug plate, an air cylinder is fixedly installed on the upper end of the wheel disc, a flexible belt is fixedly connected to the middle part of the plug plate, the middle part of the flexible belt slides and abuts against the other end of the adjusting claw, and the other end of the flexible belt is fixedly connected to the inner piston of the air cylinder.

[0017] Preferably, the end of the gradient rod is in sliding contact with the inner wall of the silo after being horizontally extended, a cross is fixedly mounted on the inner upper part of the silo, and a plurality of gradient rods are respectively located below the side edges of the cross in multiple directions.

[0018] Preferably, a rotating motor is fixedly installed in the middle of the chuck, and a rotating gear is installed at the edge of the chuck via a rotating shaft. Synchronous wheels are symmetrically installed on the output shaft of the rotating motor and the end of the rotating shaft of the rotating gear, and the two synchronous wheels are connected by a synchronous belt transmission. A rotating gear ring meshing with the rotating gear is provided on the inner wall of the wheel.

[0019] Preferably, the ends of the slope rods are made of wear-resistant materials, an air cavity is provided on the inner side of the slope rods, and air holes connected to the air cavity are evenly opened on the ends of the slope rods, and the air outlet direction of the air holes covers the inner wall of the silo and the area around the inner wall.

[0020] In addition, the present invention also provides a system of an automatic inventory monitoring device for a stereoscopic warehouse, comprising the following steps:

[0021] S1. Operation inspection: First, monitor the electrical voltage and gas pressure used in the monitoring device to ensure that they reach the preset values, detect the sensitivity of the laser sensor, and ensure that the inside of the silo is clean and free of foreign matter;

[0022] S2. Grain loading and unloading: close the discharge port at the bottom of the silo, fill the grain into the silo through the feed port, and record the volume and weight of the filled grain. After the grain is filled, close the top feed port, start the laser sensor to work, and monitor the material status in the silo in real time;

[0023] S3. Inventory inspection: In the daily process of grain taking, laser automatic inventory is used to realize inventory at any time, dynamically monitor the inventory balance status, judge the grain in and out status of the silo based on height detection, determine the shape of the upper part of the silo, and then calculate the slope of the top surface of the grain pile based on the empirical formula, and calculate the more accurate grain volume based on the slope value;

[0024] S4. Inner wall cleaning: As the grain is taken out, the grain height in the silo decreases. At this time, in order to avoid the phenomenon of grain residue hanging on the wall, air flow is introduced into the air cavity inside the slope rod. The impact force of the air flow when it flows out at the end of the slope rod is used to clean the inner wall of the silo and reduce grain residue.

[0025] Beneficial effects of the present invention:

[0026] (1) In the present invention, the remaining height of the surplus grain and the top stacking shape are monitored by laser ranging. The grain in and out status of the vertical silo is judged according to the height detection, the shape of the upper part of the silo is determined, and then the slope of the top surface of the grain pile is calculated according to the empirical formula. The grain volume is calculated more accurately according to the slope value. The equipment leveling performed during the installation of the equipment ensures the standardization of the laser sensor collection. The multiple laser sensors arranged in the circumference can realize multi-point measurement of the height of the upper body of the grain, improve the accuracy of the upper circumferential collapse data, and provide effective and accurate data support for the subsequent calculation process. The mechanized measurement method avoids the possibility that the angle of the handheld infrared ranging instrument is difficult to calibrate each time the measurement is made, which leads to the possibility of different data from multiple measurements of a single point.

[0027] (2) In the present invention, by making the slope rod adapt to the change of the concave surface after the grain is taken, the laser sensor located on the slope rod can have its light emitting angle approximately perpendicular to the concave surface of the grain during operation. By slowly moving the laser sensor along the slope rod, the change in distance from top to bottom of the concave surface of the grain under a specific tilt angle is recorded, and the average value is calculated. By measuring the vertical angle, the accuracy of the laser measurement data is improved, thereby improving the accuracy of the subsequent grain volume measurement.

[0028] (3) In the present invention, the protruding part of the upper part of the grain is flattened and slides down through the contact and collision between the end of the slope rod and the edge of the grain, thereby completing the filling of the circumference of the collapsed surface, thereby improving the uniformity of the circumferential height of the collapsed surface. The overflow of the air flow in the air hole at the end of the slope rod can accelerate the falling of the protruding part of the upper part of the grain and improve the accuracy of the subsequent measurement data. On the other hand, the blowing effect of the air flow can prevent and avoid the phenomenon of residual hanging on the inner wall of the silo due to its own reasons, thereby improving the cleanliness of the inner wall of the silo, reducing the workload of subsequent cleaning and maintenance and the ineffective loss during grain filling and use, and improving the accuracy of grain volume measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0030] Figure 1 It is a schematic diagram of the overall connection structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the spatial position between the silo and the slope rod in the present invention;

[0032] Figure 3 It is a schematic diagram of the position between the slope rod and the silo after being horizontally extended in the present invention;

[0033] Figure 4 for Figure 3A is an enlarged schematic diagram;

[0034] Figure 5 It is a schematic diagram of the positional relationship between the slope rod and the wheel disc in the present invention;

[0035] Figure 6 It is a schematic diagram of the positional relationship between the slope rod, the adjustment claw and the supporting plate in the present invention;

[0036] Figure 7 It is a schematic diagram of the positional relationship between the wheel disc and the chuck in the present invention;

[0037] Figure 8 for Figure 7 The enlarged schematic diagram of point B in FIG.

[0038] Fig. 9 for Figure 7 The enlarged schematic diagram is shown in Figure 2.

[0039] In the figure:

[0040] 1. Silo; 2. Laser sensor; 3. Elevation rod; 4. Slope rod; 5. Clamp; 51. Delivery belt; 6. Wheel; 7. Insert; 71. Support plate; 41. Sedimentation trough; 42. Tension spring; 21. Transfer rope; 61. Transfer wheel; 62. Transfer gear ring; 63. Transfer motor; 64. Transfer gear; 65. Adjustment claw; 72. Tension spring; 66. Air cylinder; 73. Flexible belt; 11. Cross; 52. Rotating motor; 53. Rotating gear; 54. Synchronous wheel; 55. Synchronous belt; 67. Rotating gear ring; 43. Air hole. DETAILED DESCRIPTION

[0041] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0042] The embodiment of the present invention provides an automatic inventory monitoring device for a stereoscopic warehouse, thereby solving the problems of great safety hazards during inventory operations, time-consuming and labor-intensive inventory operations, great difficulty in inventory operations, and inaccurate measurements.

[0043] In order to solve the time-consuming and labor-intensive shortcomings of manual inventory and reduce labor costs, such as Figures 1 to 6As shown, a preferred embodiment of the present invention proposes an automatic inventory monitoring device for a stereoscopic warehouse, including a silo 1 and a laser sensor 2. The silo 1 is a cylindrical silo 1, and its bottom is a tapered structure that gradually shrinks downward. The top of the silo 1 is provided with a material inlet, and the bottom is provided with a material outlet. A level rod 3 is fixedly installed at the inner axis position of the silo 1, and the laser sensor 2 is movably installed on the level rod 3 on the inner side of the silo 1. A chuck 5 is slidably installed on the level rod 3, and a delivery belt 51 is fixedly connected to the upper part of the chuck 5. A winding motor is fixedly installed on the top of the silo 1, and the end of the delivery belt 51 is wound around the output shaft of the winding motor. The outer periphery of the chuck 5 is hingedly installed with a wheel disc 6 that rotates together, and a slope rod 4 is hingedly installed on the outer side of the wheel disc 6. The laser sensor 2 is movably installed on the slope rod 4.

[0044] During operation, in order to avoid the risk of climbing during manual inventory, real-time monitoring of the remaining grain inside the silo 1 is achieved. After the grain is filled, the top feed port and the bottom discharge port of the silo 1 are both in a closed state. Subsequently, the winding motor is started to work, and the operation of the winding motor extends the delivery belt 51 to a certain length. During this process, the clamping plate 5 and its accessories slide downward along the elevation rod 3 under the action of gravity, so that the laser sensor 2 is at a suitable height position above the grain. Subsequently, laser ranging is used to monitor the remaining height of the remaining grain and the top stacking shape. The grain in and out status of the silo 1 is judged according to the height detection, the shape of the upper part of the silo is determined, and then the slope of the top surface of the grain pile is calculated according to the empirical formula. The more accurate grain volume is calculated according to the slope value, and the equipment leveling performed during the installation of the equipment is used to ensure the standardization of the laser sensor 2 collection and avoid error factors under manual detection.

[0045] Furthermore, the volume of grain stored in the silo 1 can be divided into three parts: the bottom inverted cone, the middle cylindrical part, and the top part. From the cross-sectional view, the grain volume is a symmetrical figure about the central axis. When the grain is put in, the center is convex and cone-shaped, and when the grain is taken out, the center is concave. When the grain is taken out, the curvature of the upper surface of the grain after collapse is accurately measured to improve the accuracy of the grain volume measurement. Figures 4 to 9As shown, a plug plate 7 is fixedly installed on the outer side of the wheel disc 6, a recessed notch is provided in the middle of the plug plate 7, the slope rod 4 is hingedly installed in the middle notch of the plug plate 7, a supporting plate 71 is fixedly installed at the bottom of the plug plate 7, and the slope rod 4 is horizontally abutted against the end of the supporting plate 71 after being turned over. The slope rod 4 is circumferentially provided with multiple, and sedimentation grooves 41 are provided on the upper and lower sides of the slope rod 4. The laser sensor 2 is slidably installed in the sedimentation groove 41 on the lower side, and the laser sensor 2 faces the bottom of the silo 1. The slope rod 4 is arranged in the upper sedimentation groove 41. A tension spring 42 is installed, and the tension spring 42 is close to the wheel disc 6. The base of the laser sensor 2 is fixedly connected with a transfer rope 21. One end of the transfer rope 21 is connected with the movable end of the tension spring 42 after passing around the end of the slope rod 4. A transfer wheel 61 is rotatably installed at the bottom of the wheel disc 6. The other end of the transfer rope 21 is wound around the transfer wheel 61. The inner ring of the transfer wheel 61 is provided with a transfer gear ring 62. A transfer motor 63 is fixedly installed on the inner side of the wheel disc 6. The output shaft of the transfer motor 63 is fixedly installed with a transfer gear 64 meshing with the transfer gear ring 62.

[0046] When working, in the initial state, the laser sensor 2 is located at the end position of the slope rod 4. At this time, the slope rod 4 is in a horizontal state, and the measurement position of the laser sensor 2 is located at the edge of the accumulated grain. When it is necessary to measure the grain volume in the silo 1, the transfer motor 63 is started to operate, and the transfer motor 63 drives the transfer gear 64 to rotate, and then the meshing action between the transfer gear 64 and the transfer gear ring 62 drives the transfer wheel 61 to rotate forward. At this time, due to the winding effect, the number of windings of the transfer rope 21 gradually increases. After overcoming the elastic force of the tension spring 42, the laser sensor 2 gradually moves from the end position of the slope rod 4 to the direction of the wheel 6, and in the process of movement, the upper height of the grain is measured by timing or spacing, and the average value of multiple measurement results is calculated. The multiple laser sensors 2 arranged in the circumferential direction can realize multi-point measurement of the upper height of the grain, improve the accuracy of the upper circumferential collapse data, and provide effective and accurate data support for the subsequent calculation process. The mechanized measurement method avoids the possibility of different data from multiple single-point measurements due to the difficulty in calibrating the angle of the handheld infrared distance meter during each measurement due to manual measurement.

[0047] Furthermore, in order to adapt to the change of the inner concave surface after the grain in the silo 1 collapses, a plurality of measuring angles are provided for the laser sensor 2, such as Figure 2 ,as well as Figures 6 to 9As shown, a trapezoidal step surface is provided on the upper side of the slope rod 4, an adjusting claw 65 is slidably installed on the wheel 6, one end of the adjusting claw 65 slides and abuts on the step surface after passing through the plug plate 7, a tension spring 72 is connected between the upper side of the slope rod 4 and the plug plate 7, an air cylinder 66 is fixedly installed on the upper end of the wheel 6, a flexible belt 73 is fixedly connected to the middle part of the plug plate 7, the middle part of the flexible belt 73 slides and abuts against the other end of the adjusting claw 65, and the other end of the flexible belt 73 is fixedly connected to the inner piston of the air cylinder 66, and the end of the slope rod 4 slides in contact with the inner wall of the silo 1 after horizontal extension, a cross 11 is fixedly installed on the upper inner side of the silo 1, and a plurality of slope rods 4 are respectively located below the side edges of the cross 11 in multiple directions.

[0048] During operation, when the measurement method is from top to bottom, the tilt angle between the measuring position of the laser sensor 2 and the concave surface of the grain is at its maximum value. At this time, the accuracy of the measured data is greatly affected by the degree of the grain concave state. In order to improve the data accuracy, during the grain body detection calculation process, the delivery belt 51 is delivered again through the operation of the winding motor, so that the wheel 6 follows the sinking of the grain to a suitable height position, and then air is introduced into the air cylinder 66 to move the inner piston. At this time, the flexible belt 73 is gradually relaxed, and the end of the adjusting claw 65 slides along the step surface on the slope rod 4. Under the elastic pulling action of the tension spring 72, the slope rod 4 It gradually switches from a horizontal state to an inclined state, and by controlling the volume of gas introduced, the inclination degree of the slope rod 4 is kept consistent with the arc surface after the grain collapses. At this time, the inclination angle of the slope rod 4 is recorded to facilitate the subsequent calculation of the height of the grain collapse surface. During the operation, the laser sensor 2 located on the slope rod 4 has a light emitting angle that is approximately vertical to the grain concave surface. The laser sensor 2 slowly moves along the slope rod 4 to record the change in distance from the top to the bottom of the grain concave surface under a specific inclination angle, and calculates the average value. By measuring the vertical angle, the accuracy of the laser measurement data is improved, thereby improving the accuracy of the subsequent grain volume measurement.

[0049] Furthermore, in the process of grain volume measurement, for the area with incomplete collapse circumference, in order to improve the convenience of data measurement and calculation accuracy, such as Figure 4 , Figure 7 and Figure 8As shown, a rotating motor 52 is fixedly installed in the middle of the chuck 5, and a rotating gear 53 is installed at the edge of the chuck 5 through a rotating shaft. Synchronous wheels 54 are symmetrically installed on the output shaft of the rotating motor 52 and the end of the rotating shaft of the rotating gear 53, and the two synchronous wheels 54 are connected by a synchronous belt 55. The inner wall of the wheel 6 is provided with a rotating gear ring 67 meshing with the rotating gear 53. The ends of the slope rod 4 are made of wear-resistant material, and an air cavity is provided on the inner side of the slope rod 4. The end of the slope rod 4 is evenly provided with air holes 43 connected with the air cavity, and the air outlet direction of the air hole 4 covers the inner wall of the silo 1 and the surrounding area of ​​the inner wall.

[0050] During operation, when a single measurement data result shows a large difference at different positions on the same circumference, the end of the slope rod 4 is made close to and fit the edge position after the grain collapses, that is, the edge position of the silo 1. Subsequently, the rotating motor 52 is started to reciprocate. Under the transmission action of the synchronous wheel 54 and the synchronous belt 55, the rotating gear 53 is reciprocated within a certain angle. At this time, through the meshing action between the rotating gear 53 and the rotating gear ring 67, the wheel plate 6 is reciprocated on the clamping plate 5, thereby driving the slope rod 4 to reciprocate. Through the contact and collision action between the end of the slope rod 4 and the edge position of the grain, the upper part of the grain is The protruding part is flattened and slides down to complete the filling of the circumference of the collapsed surface, thereby improving the uniformity of the circumferential height of the collapsed surface. At the same time, along with the reciprocating deflection of the slope rod 4, air flow can be introduced into the inner air cavity thereof. After the air flow flows out of the air hole 43, on the one hand, it can accelerate the falling of the protruding part of the grain accumulation on the upper part. On the other hand, the blowing effect of the air flow can prevent and avoid the phenomenon of residual hanging on the inner wall of the silo 1 due to its own reasons, thereby improving the cleanliness of the inner wall of the silo 1, reducing the workload of subsequent cleaning and maintenance, reducing the ineffective loss during the grain filling and use process, and improving the accuracy of grain volume measurement.

[0051] In addition, the present invention also provides a system of an automatic inventory monitoring device for a stereoscopic warehouse, comprising the following steps:

[0052] S1. Operation inspection: First, monitor the electrical voltage and gas pressure used in the monitoring device to make them reach the predetermined value, detect the sensitivity of the laser sensor 2, and ensure that the inside of the silo 1 is clean and free of foreign matter;

[0053] S2, grain loading and unloading: close the discharge port at the bottom of silo 1, fill grain into silo 1 through the feed port, and record the volume weight of the filled grain. After the grain is filled, close the top feed port, start the laser sensor 2 to work, and monitor the material status in silo 1 in real time;

[0054] S3. Inventory inspection: In the daily process of grain taking, laser automatic inventory is used to realize inventory at any time, dynamically monitor the inventory balance status, judge the grain in and out status of the vertical silo 1 according to the height detection, determine the shape of the upper part of the silo, and then calculate the slope of the top surface of the grain pile according to the empirical formula, and calculate the more accurate grain volume according to the slope value;

[0055] S4. Inner wall cleaning: As the grain is taken out, the grain level in the silo 1 decreases. At this time, in order to avoid the phenomenon of grain residue hanging on the wall, air flow is introduced into the air cavity inside the slope rod 4. The impact force of the air flow when it flows out from the end of the slope rod 4 can achieve the cleaning of the inner wall of the silo 1 and reduce grain residue.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automatic inventory monitoring device for a stereoscopic warehouse, comprising a silo (1) and a laser sensor (2), wherein the silo (1) is a cylindrical silo (1), the bottom of which is a tapered structure that gradually contracts downward, the top of the silo (1) is provided with a material inlet, the bottom of which is provided with a material outlet, a height rod (3) is fixedly installed at the inner axis position of the silo (1), and the laser sensor (2) is movably installed on the height rod (3) inside the silo (1), characterized in that: Also includes A grade rod (4) is provided, wherein a chuck (5) is slidably mounted on the elevation rod (3), a delivery belt (51) is fixedly connected to the upper part of the chuck (5), a winding motor is fixedly mounted on the top of the silo (1), and the end of the delivery belt (51) is wound around the output shaft of the winding motor, the outer periphery of the chuck (5) is hingedly mounted on the outer side of the wheel disc (6) through a rotating mating wheel disc (6), the grade rod (4) is hingedly mounted on the outer side of the wheel disc (6), a laser sensor (2) is movably mounted on the grade rod (4), and the grade rod (4) is horizontally After being extended, its end portion is in sliding contact with the inner wall of the silo (1); a cross (11) is fixedly mounted on the inner upper portion of the silo (1); and a plurality of slope rods (4) are respectively located below the side edges of the cross (11) in multiple directions; the ends of the slope rods (4) are made of wear-resistant material; an air cavity is provided on the inner side of the slope rod (4); and air holes (43) connected to the air cavity are evenly opened at the ends of the slope rods (4); and the air outlet direction of the air holes (43) covers the inner wall of the silo (1) and the surrounding area of ​​the inner wall; The upper side of the gradient rod (4) is provided with a trapezoidal step surface, an adjusting claw (65) is slidably mounted on the wheel disc (6), one end of the adjusting claw (65) slides against the step surface after passing through the plug plate (7), a tension spring (72) is connected between the upper side of the gradient rod (4) and the plug plate (7), an air cylinder (66) is fixedly mounted on the upper end of the wheel disc (6), a flexible belt (73) is fixedly connected to the middle of the plug plate (7), the middle of the flexible belt (73) slides against the other end of the adjusting claw (65), and the other end of the flexible belt (73) is fixedly connected to the inner piston of the air cylinder (66); A rotating motor (52) is fixedly mounted in the middle of the chuck (5), a rotating gear (53) is rotatably mounted on the edge of the chuck (5) via a rotating shaft, synchronous wheels (54) are symmetrically mounted on the output shaft of the rotating motor (52) and the end of the rotating shaft of the rotating gear (53), and the two synchronous wheels (54) are connected to each other via a synchronous belt (55), and a rotating gear ring (67) meshing with the rotating gear (53) is arranged on the inner wall of the wheel disc (6), and the wheel disc (6) is reciprocated on the chuck (5) by the meshing action between the rotating gear (53) and the rotating gear ring (67), thereby driving the gradient rod (4) to reciprocate, and by the contact and collision action between the end of the gradient rod (4) and the edge of the grain, the protruding part of the upper part of the grain is flattened and slides down, thereby completing the filling of the circumference of the collapsed surface, thereby improving the uniformity of the circumference height of the collapsed surface.

2. According to the automatic inventory monitoring device for a stereoscopic warehouse as described in claim 1, it is characterized by: A plug plate (7) is fixedly mounted on the outer side of the wheel disc (6), a recessed notch is provided in the middle of the plug plate (7), the gradient rod (4) is hingedly mounted in the middle notch of the plug plate (7), a supporting plate (71) is fixedly mounted on the bottom of the plug plate (7), and the gradient rod (4) is horizontally abutted against the end of the supporting plate (71) after being turned over.

3. According to the automatic inventory monitoring device for a stereoscopic warehouse as described in claim 1, it is characterized by: A plurality of the slope rods (4) are arranged in a circumferential direction, and sedimentation grooves (41) are provided on both upper and lower sides of the slope rod (4). The laser sensor (2) is slidably mounted in the sedimentation groove (41) on the lower side, and the laser sensor (2) faces the bottom of the silo (1).

4. According to the automatic inventory monitoring device of the stereoscopic warehouse as described in claim 3, it is characterized by: A tension spring (42) is installed in the upper sedimentation groove (41) of the grade rod (4), and the tension spring (42) is close to the wheel disc (6). The base of the laser sensor (2) is fixedly connected to a transfer rope (21), and one end of the transfer rope (21) is connected to the movable end of the tension spring (42) after passing around the end of the grade rod (4). A transfer wheel (61) is rotatably installed at the bottom of the wheel disc (6), and the other end of the transfer rope (21) is wound around the transfer wheel (61).

5. The automatic inventory monitoring device for a three-dimensional warehouse according to claim 4 is characterized in that: The inner ring of the transfer wheel (61) is provided with a transfer gear ring (62), the inner side of the wheel disc (6) is fixedly mounted with a transfer motor (63), and the output shaft of the transfer motor (63) is fixedly mounted with a transfer gear (64) meshing with the transfer gear ring (62).

6. A method for using the automatic inventory monitoring device for a stereoscopic warehouse according to any one of claims 1 to 5, characterized in that: The method comprises the following steps: S1. Operation inspection: First, monitor the electrical voltage and gas pressure used in the monitoring device to ensure that they reach the predetermined values, detect the sensitivity of the laser sensor (2), and ensure that the inside of the silo (1) is clean and free of foreign matter; S2, grain loading and unloading: close the discharge port at the bottom of the silo (1), fill grain into the silo (1) through the feed port, and record the volume weight of the filled grain. After the grain is filled, close the top feed port, start the laser sensor (2) to work, and monitor the state of the material in the silo (1) in real time; S3. Inventory inspection: In the daily process of grain taking, laser automatic inventory is used to realize inventory at any time, dynamically monitor the inventory balance status, judge the grain in and out status of the vertical silo (1) based on height detection, determine the shape of the upper part of the silo, and then calculate the slope of the top surface of the grain pile based on the empirical formula, and calculate the grain volume more accurately based on the slope value; S4, cleaning the inner wall: As the grain is taken out, the grain level in the silo (1) decreases. At this time, in order to prevent grain residue from hanging on the wall, air is introduced into the air cavity inside the slope rod (4). The impact force of the air flow when it flows out from the end of the slope rod (4) is used to clean the inner wall of the silo (1), thereby reducing grain residue.

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