CN206488749U - The automatically controlled measurement apparatus of seed physical characteristic multi-parameter based on high-speed camera - Google Patents

Abstract

The utility model provides a multi-parameter electric control measuring device for seed physical characteristics based on high-speed camera, which can realize the measurement of multiple physical characteristic parameters. It includes: cabinet body; barrel; high-speed camera; vertical lifting device, including guide rail slider pair and drive unit, and guide rail slider pair is arranged between the barrel and the cabinet body; horizontal jacking device, including horizontal support plate assembly It consists of a segmented jacking unit and a horizontal moving unit, wherein the horizontal support plate assembly includes a horizontal support plate, a special-shaped shaft seat located symmetrically on both sides under the support plate, and a special-shaped shaft that cooperates with the special-shaped shaft seat to realize the rotation of the horizontal support plate ;The segmental jacking unit includes guide wheel sets and jacking assemblies which are all arranged under the horizontal support plate; the horizontal moving unit includes a linear slide rail for realizing the horizontal movement of the segmental jacking unit and a horizontal rail for controlling the movement of the linear slide rail electric motors; and electric control systems.

Description

Multi-parameter electronically controlled measurement device for seed physical properties based on high-speed camera

technical field

The utility model relates to a seed physical parameter measurement device and method, in particular to a high-speed camera-based multi-parameter electric control measurement device and measurement method for seed physical properties, belonging to the technical field of agricultural machinery.

Background technique

The transportation, sowing, harvesting and drying of grain materials have always been an important content of agricultural machinery technology research. Correctly simulating the movement behavior and mechanical behavior of grain materials in the working process is the key to improving the accuracy of agricultural machinery digital prototype simulation research and improving work efficiency. , an important basis for parameter optimization of key components. At present, with the increasing development of computer technology and the gradual maturity of discrete element method theory, the application of computer particle numerical simulation in the field of agricultural machinery research is becoming more and more extensive. Through the discrete element analysis software, a large amount of complex behavior information of grain materials and difficult-to-measure particle-scale behavior information can be directly obtained, and advanced research methods and problem-solving approaches can be provided for the movement, force, heat and energy transfer of particle flow. In reality, each material has inherent physical parameters, how to correctly obtain the physical parameters is the direct factor that determines the correctness of the particle simulation, so the early measurement of the physical parameters is very important. Physical parameters include intrinsic parameters (such as Poisson's ratio, shear modulus, true density) and contact parameters with other materials (such as collision recovery coefficient, static friction coefficient, dynamic friction coefficient, etc.).

At present, the physical parameter measurement devices for agricultural grain materials have a single function and are mainly manual and mechanical. There is a lack of a composite measurement device with high precision, electric control, image-assisted measurement, and the ability to calibrate multiple physical parameters.

Utility model content

The purpose of the utility model is to provide a multi-parameter electric control measuring device for seed physical characteristics based on high-speed camera, which can realize the measurement of multiple physical characteristic parameters.

In order to achieve the above object, the utility model adopts the following technical solutions:

A multi-parameter electronically controlled measuring device for seed physical properties based on high-speed camera, comprising: a cabinet body; a barrel; a high-speed camera, arranged above the cabinet body; a vertical lifting device, including a guide rail slider pair and a drive unit, and a guide rail slider The pair is arranged between the barrel and the cabinet, and the drive unit includes a screw nut mechanism and a vertical motor connected with the screw nut mechanism; the horizontal jacking device includes a horizontal support plate assembly, a segmented jacking unit and The horizontal moving unit, wherein the horizontal support plate assembly includes a horizontal support plate, a special-shaped shaft seat arranged symmetrically on both sides under the support plate, and a special-shaped shaft that cooperates with the special-shaped shaft seat to realize the rotation of the horizontal support plate; The guide wheel set and jacking assembly arranged under the horizontal support plate; the horizontal moving unit includes a linear slide rail for realizing the horizontal movement of the segmented jacking unit and a horizontal motor for controlling the motion of the linear slide rail; and an electric control system, including A control unit for vertical motor and horizontal motor control, an encoder connected to the special-shaped shaft for rotation angle feedback, a displacement sensor for feedback of the lifting height of the vertical lifting device, and a touch screen connected to the control unit with a control interface.

In the preferred solution, the upper top surface and the lower bottom surface of the material cylinder are both open structures, and a base is provided on the material cylinder, and the material cylinder is connected to one end of the extension arm support through the base through the bolt and nut assembly, and the other end of the long arm support is connected to the guide rail slider On the vice middle slider.

In the preferred solution, the horizontal support plate is a rectangular plate, and the upper surface is arranged with a semi-surrounding guard plate along the edge. The horizontal support plate can realize 0-85° rotation around the special-shaped axis, and the horizontal support plate is provided with multiple reserved position holes.

Preferably, the guide wheel set includes a guide wheel frame and a guide wheel, the guide wheel frame is arranged on the lower part of the horizontal support plate, an L-shaped side plate is arranged between the guide wheel frame and the horizontal support plate, and the guide wheel frame is provided with a mounting hole. The wheel passes through the mounting hole through the wheel shaft and is connected with the guide wheel frame.

In the preferred solution, the special-shaped shaft seat is a convex structure, with a special-shaped through hole reserved in the middle, and connecting holes are provided at both ends of the bottom. The special-shaped shaft seat is installed under the horizontal support plate, and the special-shaped shaft is matched with the special-shaped through hole.

Preferably, the jacking assembly includes a jacking bracket and a main guide wheel, a guide wheel groove is provided in the middle of the jacking bracket, and a guide wheel mounting hole is provided at the top, and the main guiding wheel passes through the guide wheel mounting hole and is connected with the jacking bracket by bolts.

In a preferred solution, the section of the jacking bracket is a circular arc transitional surface, the tangent direction of the transitional surface is 58° to the horizontal plane, and the curved surface is tangent to the outer contour of the main guide wheel.

The beneficial effects of the utility model:

1. With the above structure, the electric control system controls the vertical lifting device, which can realize the determination of the grain material accumulation angle and the collision recovery coefficient. With the help of high-speed camera-assisted measurement, the accumulation state can be captured to measure the accumulation angle. After multiple measurements, the grain material can be drawn The stacking curve can be used for interactive correction with discrete element simulation results; the use of horizontal jacking devices can achieve accurate measurement of the static friction coefficient of discrete materials, and the inclination angle of the horizontal support plate can be collected with the encoder and displayed in real time. The sliding angle solves the problems of single function, low efficiency and large influence of manual operation of the physical parameter measuring device.

2. The vertical lifting device and the horizontal lifting device involved in the utility model adopt the motor-driven guide rail slider to complete the action and PLC control. Each driving parameter can be set or adjusted in real time, which is convenient for flexibly determining the combination of multiple motion parameters and quickly measuring physical properties. parameter.

3. The static friction coefficient measurement method involved in the utility model is designed with a segmented jacking unit with arc transition and guide wheels. The combination of the two can realize the horizontal positioning of the initial position of the horizontal support plate and the smooth connection during the jacking process. Reduce the impact during the working process and ensure the stability of the measurement process.

5. On the one hand, the horizontal support plate assembly is the scattering carrier of grain materials in the accumulation angle measurement function, and on the other hand, it is the installation carrier of grain materials and other material plates in the measurement of static friction coefficient. The supporting design includes horizontal support plate, special-shaped shaft and special-shaped shaft Mounting seat, compact structure, reasonable design.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described:

Figure 1 is the front view of the whole machine structure.

Figure 2 is a side view of the overall structure.

Figure 3 is a schematic diagram of the horizontal support plate assembly.

Figure 4 is a schematic diagram of the guide wheel set.

Figure 5 is a schematic diagram of the jacking assembly.

In the figure 1. High-speed camera, 2. Cabinet body, 3. Material barrel, 4. Horizontal support plate, 5. Segmented jacking unit, 6. Guide wheel group, 7. Displacement sensor, 8. Linear slide rail, 9. Horizontal motor, 10. Touch screen, 11. Vertical motor, 12. Encoder bracket, 13. Special-shaped shaft, 14. Extension arm support, 15. Special-shaped shaft seat, 16. Encoder, 17. Rail slider pair, 18 Lead screw screw nut mechanism, 501. main guide wheel, 502. bolt, 503. jacking bracket, 601. guide wheel, 602. axle, 603. side plate, 604. guide wheel frame.

detailed description

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings and examples.

A multi-parameter electric control measuring device for seed physical characteristics based on high-speed camera, comprising a cabinet 2, a barrel 3, a high-speed camera 1, a vertical lifting device, a horizontal jacking device and an electric control system.

The cabinet body 2 is composed of a plurality of boards joined together, and the inside is supplemented by angle irons connected end to end to form a skeleton.

The upper top surface and the lower bottom surface of the barrel 3 are both open structures, and the barrel 3 is provided with a base with barrel mounting holes.

The high-speed camera 1 is arranged on the beam at the top of the cabinet body 2 .

The vertical lifting device includes a guide rail slider pair 17 and a drive unit, the guide rail slider pair 17 is arranged between the barrel 3 and the cabinet 2, and the drive unit includes a lead screw screw nut mechanism 18 and a screw nut mechanism connected with the lead screw screw nut mechanism 18. Vertical motor 11.

The horizontal jacking device includes a horizontal support plate assembly, a segmented jacking unit 5 and a horizontal moving unit, wherein the horizontal support plate assembly includes a horizontal support plate 4, a special-shaped shaft seat 15 arranged symmetrically on both sides below the support plate and The special-shaped shaft seat 15 cooperates with the special-shaped shaft 13 that realizes the rotation of the horizontal support plate 4; the segmental jacking unit 5 includes the guide wheel set 6 and the jacking assembly that are all arranged under the horizontal support plate 4; The linear slide rail 8 that the lifting unit 5 moves horizontally and the horizontal motor 9 for controlling the motion of the linear slide rail 8 .

The electric control system includes a control unit for the control of the vertical motor 11 and the horizontal motor 9, an encoder 16 for rotating angle feedback connected to the special-shaped shaft 13 through the encoder bracket 12, and an encoder for feeding back the lifting height of the vertical lifting device. The displacement sensor 7 and the touch screen 10 with a control interface connected with the control unit.

In this embodiment, the upper top surface and the lower bottom surface of the material barrel 3 are all open structures, and the material barrel 3 is provided with a base, and the material barrel 3 is connected to one end of the extension arm support 14 through the base through the bolt and nut assembly, and the long arm support The other end is connected to the slide block in the guide rail slide block pair.

In this embodiment, the horizontal support plate 4 is a rectangular plate, and the upper surface is arranged with a semi-surrounding guard plate along the edge. Reserved hole.

In this embodiment, the guide wheel set 6 includes a guide wheel frame 604 and a guide wheel 601, the guide wheel frame 604 is arranged on the lower part of the horizontal support plate 4, and an L-shaped side plate 603 is arranged between the guide wheel frame 604 and the horizontal support plate 4, The guide wheel frame 604 is provided with a mounting hole, and the guide wheel 601 is connected with the guide wheel frame 604 through the wheel shaft 602 through the mounting hole.

In this embodiment, the special-shaped shaft seat 15 is a convex structure, with a special-shaped through hole reserved in the middle, and connecting holes are provided at both ends of the bottom. The special-shaped shaft seat 15 is installed under the horizontal support plate 4, and the special-shaped shaft 13 is matched with the special-shaped through hole. .

In this embodiment, the jacking assembly includes a jacking bracket 503 and a main guide wheel 501, a guide wheel groove is set in the middle of the jacking bracket 503, and a guide wheel installation hole is provided at the top, and the main guide wheel 501 is installed through the guide wheel through a bolt 502 The hole is connected with the jacking bracket 503 . The cross-section of the jacking bracket 503 is a circular arc transitional surface, the tangent direction of the transitional surface is 58° to the horizontal plane, and the curved surface is tangent to the outer contour of the main guide wheel 501 .

A kind of method for measuring the physical property parameters of seeds carried out by the multi-parameter electronically controlled measuring device of the physical properties of seeds based on high-speed imaging, comprising the following steps:

a. Measurement of particle accumulation angle. The initial grain material is placed in the barrel 3, and the control unit presets the lifting speed. The barrel 3 is driven by the vertical lifting device and lifted from the static position along the vertical direction, and the grain material is dispersed to the level without restraint. Form an accumulation angle on the table, capture the accumulation image with the help of the high-speed camera 1, use the image analysis software to analyze and measure the captured image, and draw the accumulation curve for simulation analysis and result comparison;

b. Measurement of the collision recovery coefficient. After the grain material is lifted to the set height by the vertical lifting device, it falls naturally at this height and stops after colliding with the test plate installed on the horizontal support plate 4. The falling and collision process is photographed by the high-speed camera 1 , and complete the determination of the collision restitution coefficient with the help of image calculation and analysis software;

c, draw the accumulation curve, capture the accumulation image by means of the high-speed camera 1, utilize image analysis software to carry out calculation analysis and statistics on the captured image, draw the formation process of the accumulation curve, and facilitate real-time comparison with the simulation results;

d. Measurement of the coefficient of static friction, after the measurement of the stacking angle is completed, the horizontal support plate 4 slowly rotates along the special-shaped shaft 13 under the action of the segmental jacking unit 5, and with the help of the video playback function of the high-speed camera 1, it is judged when the grain material slips , read the inclination angle of the horizontal support plate 4 displayed by the electric control system, and realize the measurement of the static friction coefficient of the particle body.

The specific implementation described above is only a specific case of the utility model, and is not intended to limit the utility model in other forms. Any skilled person who is familiar with this profession may use the technical content disclosed above to change or remodel it into an equivalent implementation of the equivalent change. Way. However, under the premise of not departing from the technical principles of the present utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model shall fall within the patent protection scope of the present utility model.

Claims (7)

1. a kind of automatically controlled measurement apparatus of seed physical characteristic multi-parameter based on high-speed camera, it is characterised in that include：

Cabinet；

Barrel；

High-speed camera, is arranged on top in cabinet；

Vertical-lifting device, including guide rail slide block pair and driver element, guide rail slide block pair are arranged between barrel and cabinet, driven Unit includes screw-nut mechanism and the vertical motor being connected with screw-nut mechanism；

Horizontal jacking apparatus, including horizontal supporting plate assembly, section jacking unit and horizontal movement unit, wherein, horizontal support Special-shaped axle bed and coordinate realization with special-shaped axle bed that plate assembly is arranged symmetrically comprising horizontal supporting plate, positioned at both sides below supporting plate The special-shaped axle of horizontal supporting plate rotation；Section jacking unit includes the directive wheel group being each provided at below horizontal supporting plate and jack-up is total Into；What horizontal movement unit was moved comprising the line slide rail for realizing the movement of section jacking unit horizontal and for controlling line slide rail Horizontal motor；With

Electric control system, including controlled for vertical motor and horizontal motor control unit, be connected and revolved with abnormal shape axle Gyration feedback encoder, the displacement transducer for feeding back vertical-lifting device hoisting depth and with control unit connect band The touch-screen of control interface.

2. the seed physical characteristic multi-parameter automatically controlled measurement apparatus as claimed in claim 1 based on high-speed camera, it is characterised in that： The upper top surface and bottom surface of barrel are uncovered structure, and barrel is provided with base, barrel by base through bolt and nut component with Extend in the connection of arm support one end, long arm support other end connection guide rail slide block pair on sliding block.

3. the seed physical characteristic multi-parameter automatically controlled measurement apparatus as claimed in claim 1 based on high-speed camera, it is characterised in that： Horizontal supporting plate is rectangular slab, and upper surface is disposed with semi-surrounding type backplate along edge, and horizontal supporting plate can be realized around special-shaped axle 0-85 ° of rotation, and horizontal supporting plate is provided with multiple reserved location holes.

4. the seed physical characteristic multi-parameter automatically controlled measurement apparatus as claimed in claim 1 based on high-speed camera, it is characterised in that： Directive wheel group includes being oriented to wheel carrier and directive wheel, and directive wheel frame is arranged on horizontal supporting plate bottom, is oriented to wheel carrier and horizontal support L-shaped side plate is provided between plate, wheel carrier is oriented to and is provided with mounting hole, directive wheel is connected by wheel shaft through mounting hole with being oriented to wheel carrier Connect.

5. the seed physical characteristic multi-parameter automatically controlled measurement apparatus as claimed in claim 1 based on high-speed camera, it is characterised in that： Special-shaped axle bed is convex structure, and the reserved special-shaped through hole in centre, bottom two ends are provided with connecting hole, and special-shaped axle bed is arranged on level branch Below fagging, special-shaped axle coordinates with special-shaped through hole.

6. the seed physical characteristic multi-parameter automatically controlled measurement apparatus as claimed in claim 1 based on high-speed camera, it is characterised in that： Jack-up assembly includes opening up guiding race in the middle of jack-up support and main directive wheel, jack-up support, and top is installed provided with directive wheel Hole, main directive wheel is connected by bolt through directive wheel mounting hole with jack-up support.

7. the seed physical characteristic multi-parameter automatically controlled measurement apparatus as claimed in claim 6 based on high-speed camera, it is characterised in that： Jack-up bracket cross section is arc transition curved surface, and fillet surface tangential direction is horizontal by 58 °, and curved surface and main directive wheel Outline is in tangent relation.