Numerical control multifunctional seed-metering device comprehensive test bench

Abstract

The utility model discloses a numerical control multifunctional seed-metering device comprehensive test bench, which relates to the field of seed-metering device tests and comprises a control system, a folding rack, a mounting rack and a seed-metering device. The mounting frame comprises a first mounting seat, a first crank, a second crank and a second mounting seat, the first mounting seat is fixedly connected with the folding rack, one ends of the first crank and the second crank are horizontally hinged to the first mounting seat, and the other ends of the first crank and the second crank are horizontally hinged to the second mounting seat; a servo motor is also fixed on the first mounting seat and is in transmission connection with the end part of the first crank or the second crank through an output shaft of a speed reducer; according to the utility model, the seed-metering device is fixed on the double-crank structure, and the servo motor is utilized to drive the crank to rotate, so that the seed-metering device can vibrate up and down to simulate the jolting and fluctuating motion state in the actual seeding process, and the corresponding test is carried out in the motion state, so that the obtained test data is closer to the data in the actual seeding process; the accuracy of a test result can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of seed metering device testing, in particular to a digitally controlled multifunctional seed metering device comprehensive testing platform. Background Art

[0002] Seeders refer to planting machinery that sows crops and seeds. They have the characteristics of uniform sowing, consistent depth, stable row spacing, good soil covering, seed saving, and high work efficiency. In the process of production and manufacturing, the seeder test bench is an indispensable test equipment for testing the performance of the seeder. At present, when the performance of the seeder is tested using the seeder test bench, the seeder completes the seeding operation in a static relative motion. However, in the actual sowing process, the field land is not very flat, and the seeder will inevitably have ups and downs. Therefore, there is a difference between the static working condition of the seeder on the seeder test bench and the actual working condition, which will affect the test accuracy, resulting in data deviations between the actual sowing and the test experiment, thereby affecting the sowing accuracy. Utility Model Content

[0003] The utility model aims to provide a CNC multifunctional seed metering device comprehensive test bench to solve the problems existing in the prior art. The seed metering device can simulate the bumpy and fluctuating motion state of the actual sowing process during the test, and the obtained test data is closer to the data in the actual sowing process, which can improve the accuracy of the test results.

[0004] To achieve the above-mentioned purpose, the utility model provides the following solution: the utility model provides a CNC multifunctional seed metering device comprehensive test bench, including a control system, a folding frame, a mounting frame and a seed metering device fixed on the mounting frame; the mounting frame includes a first mounting seat, a first crank, a second crank and a second mounting seat, the first mounting seat is fixedly connected to the folding frame, the first crank is located above the second crank, and one end of both is horizontally hinged to the first mounting seat, and the other end is horizontally hinged to the second mounting seat, and the seed metering device is fixed on the second mounting seat; a servo motor and a reducer electrically connected to the control system are also fixed on the first mounting seat, and the servo motor is transmission-connected to the end of the first crank or the second crank through the reducer, and is used to drive the first crank or the second crank to rotate.

[0005] Preferably, a driving wheel is fixed on the output shaft of the reducer, a driven wheel is coaxially fixed on the hinge shaft connecting the second crank and the first mounting seat, and the driving wheel and the driven wheel are transmission connected.

[0006] Preferably, the driving wheel and the driven wheel are connected by a synchronous belt having teeth.

[0007] Preferably, the mounting bracket further comprises a gravity compensation spring, one end of which is fixed to the middle of the first crank, and the other end of which is fixed to the end of the second crank and close to the second mounting seat.

[0008] Preferably, the folding frame includes a base, a support column and a first cross beam, the bottom end of the support column is connected to the base, the top end is connected to the middle part of the first cross beam, both ends of the first cross beam are connected to a second cross beam that can move along its length direction, and the second cross beam is detachably connected to the first mounting seat.

[0009] Preferably, the second crossbeam is provided with a sliding sleeve which can slide along its length direction, the sliding sleeve is fixed with a mounting plate, the mounting plate is provided with a circular fixing hole and an arc-shaped fixing hole, and the first mounting seat is connected to the circular fixing hole and the arc-shaped fixing hole by bolts.

[0010] Preferably, the support column includes a first longitudinal rod and a second longitudinal rod, the bottom end of the first longitudinal rod is horizontally hinged to the base, and the top end is slidably connected to the second longitudinal rod; the end of the second longitudinal rod is fixedly connected to the first crossbeam.

[0011] Preferably, the base includes a first horizontally arranged first connecting member and a retaining frame symmetrically connected to both ends of the first connecting member, and the middle part of the first connecting member is horizontally hinged to the bottom end of the first longitudinal rod; the retaining frame includes a first cross bar, a second cross bar and a third cross bar, one end of the first cross bar is vertically hinged to the end of the first connecting member, and the other end is vertically hinged to one end of the second connecting member, one end of the second cross bar is vertically hinged to the other end of the second connecting member, and the other end of the second cross bar is connected to the third cross bar, and the third cross bar can slide along the length direction of the second cross bar.

[0012] Preferably, the bottoms of the first connecting member, the second connecting member and the third crossbar are all provided with height-adjustable foot cups.

[0013] Preferably, the first cross beam and the second cross beam, the sliding sleeve and the second cross beam, the first longitudinal rod and the second longitudinal rod, and the second cross rod and the third cross rod are all detachably fixed by bolts.

[0014] Compared with the prior art, the utility model has achieved the following technical effects:

[0015] The utility model fixes the seed meter on a double crank structure and utilizes the forward and reverse rotation of a servo motor to drive the articulated shaft to rotate. The articulated shaft is fixedly connected to the crank to drive the crank to rotate, thereby causing the seed meter to vibrate up and down, simulating the bumpy and fluctuating motion state during the actual sowing process. Corresponding tests are performed under this motion state, and the obtained test data is closer to the data during the actual sowing process, thereby improving the accuracy of the test results.

[0016] Other technical effects that can be achieved by the present invention are described in detail in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the comprehensive test bench for the numerically controlled multifunctional seed metering device in the utility model;

[0019] Figure 2 It is the rear isometric view of the CNC multifunctional seed metering device comprehensive test bench;

[0020] Figure 3 is a schematic diagram of the matching structure of the first longitudinal rod and the second longitudinal rod;

[0021] Figure 4 This is the electrical control schematic diagram of the CNC multifunctional seed metering device comprehensive test bench;

[0022] Among them, 1. seed meter; 2. first mounting seat; 3. first crank; 4. second crank; 5. second mounting seat; 6. servo motor; 7. driving wheel; 8. driven wheel; 9. synchronous belt; 10. gravity compensation spring; 11. first crossbeam; 12. second crossbeam; 13. sliding sleeve; 14. mounting plate; 15. arc-shaped fixing hole; 16. first longitudinal rod; 17. second longitudinal rod; 18. first connecting piece; 19. first crossbar; 20. second crossbar; 21. third crossbar; 22. second connecting piece; 23. foot cup; 24. control cabinet. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The utility model aims to provide a CNC multifunctional seed metering device comprehensive test bench to solve the problems existing in the prior art. The seed metering device can simulate the bumpy and fluctuating motion state of the actual sowing process during the test, and the obtained test data is closer to the data in the actual sowing process, which can improve the accuracy of the test results.

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] like Figure 1 to Figure 4 As shown, the present embodiment provides a CNC multifunctional seed metering device comprehensive test bench, including a control system, a folding frame, a mounting frame and a seed metering device 1 fixed on the mounting frame; the mounting frame includes a first mounting seat 2, a first crank 3, a second crank 4 and a second mounting seat 5, the first mounting seat 2 is fixedly connected to the folding frame, the first crank 3 is located above the second crank 4, and one end of both are horizontally hinged on the first mounting seat 2, and the other end is horizontally hinged to the second mounting seat 5, and the seed metering device 1 is fixed on the second mounting seat 5; a servo motor 6 electrically connected to the control system is also fixed on the first mounting seat 2, and the output shaft of the servo motor 6 is transmission-connected to the end of the first crank 3 or the second crank 4, for driving the first crank 3 or the second crank 4 to rotate forward or reverse.

[0027] The “component A and component B are horizontally hinged or vertically hinged” mentioned in this embodiment means that “the hinge axis between component A and component B is horizontally arranged or vertically arranged”.

[0028] When in use, the control system writes a program to control the servo motor 6 to alternately rotate forward and reverse, and sets the single forward rotation duration (or angle) and single reverse rotation duration (or angle), so that the double crank structure formed by the first mounting seat 2, the second mounting seat 5, the first crank 3 and the second crank 4 drives the seed meter 1 on the second mounting seat 5 to vibrate longitudinally, simulating the movement state of the seed meter 1 bouncing up and down in the field during the actual sowing process. The corresponding test is carried out in this motion state, and the test data obtained is closer to the data in the actual sowing process, which can improve the accuracy of the test results.

[0029] In actual testing, the angles of forward rotation and reverse rotation can be set arbitrarily, or the forward rotation can be performed twice or more continuously before reverse rotation to better simulate the actual bumpy state. The setting of the control program is well known to those skilled in the art, and will not be described in detail in this embodiment.

[0030] Those skilled in the art can use this test bench to test the precision sowing rate, re-seeding rate and other data of the seed metering device 1 in a bumpy state. The devices required for the test and the installation method of the sensor are well known to those skilled in the art. The various test devices can be connected to the seed metering device 1. This embodiment does not limit the devices required for testing various data.

[0031] The control system in this embodiment includes a control cabinet 24 (not shown in the figure) arranged beside the folding frame. The control module in the control cabinet 24 is electrically connected to the servo motor 6 and the power components and sensors connected to the seed metering device 1, and can adjust the rotation law of the servo motor 6 to simulate different bumpy states, and can also collect data fed back by the sensors.

[0032] Preferably, in this embodiment, the first crank 3 and the second crank 4 have the same length and are arranged in parallel. When the first crank 3 and the second crank 4 are both horizontal, the double crank structure is rectangular.

[0033] Further, in this embodiment, a driving wheel 7 is fixed on the output shaft of the servo motor 6, and a driven wheel 8 is coaxially fixed on the hinge shaft connecting the second crank 4 and the first mounting seat 2, and the driving wheel 7 and the driven wheel 8 are transmission connected. The driving wheel 7 and the driven wheel 8 can be connected by a chain or a synchronous belt 9. In order to reduce noise during the test and ensure transmission stability, in this embodiment, the driving wheel 7 and the driven wheel 8 are connected by a synchronous belt 9 with teeth.

[0034] Furthermore, the mounting frame in this embodiment also includes a gravity compensation spring 10, one end of which is fixed to the middle of the first crank 3, and the other end is fixed to the end of the second crank 4, close to the second mounting seat 5. The gravity compensation spring 10 is always in an extended state between the first crank 3 and the second crank 4. When the first crank 3 and the second crank 4 vibrate upward, the length of the gravity compensation spring 10 gradually shortens, exerting an upward pulling force on the second crank 4, thereby compensating for the upward lifting double crank structure of the servo motor 6 and the driving force of the seed metering device 1, reducing the power requirement of the servo motor 6, and also reducing the energy consumption of the servo motor 6.

[0035] Furthermore, in this embodiment, the folding frame includes a base, a support column and a first beam 11, the bottom end of the support column is connected to the base, the top end is connected to the middle of the first beam 11, and the two ends of the first beam 11 are connected to the second beam 12 that can move along its length direction, and the second beam 12 is detachably connected to the first mounting seat 2. When the second beam 12 moves outward and extends, more mounting frames and seed metering devices 1 can be installed and tested at the same time. Specifically, the first beam 11 and the second beam 12 are both hollow rectangular rods, and the second beam 12 is inserted into the hollow cavity of the first beam 11 to slide; and bolts are provided on the first beam 11, and when the second beam 12 is extended and retracted into place, the bolts are tightened to fix the second beam 12.

[0036] In this embodiment, the second cross beam 12 is provided with a sliding sleeve 13 that can slide along its length direction, a mounting plate 14 is fixed on the sliding sleeve 13, a circular fixing hole and an arc-shaped fixing hole 15 are provided on the mounting plate 14, and the first mounting seat 2 is connected to the circular fixing hole and the arc-shaped fixing hole 15 by bolts. By providing the sliding sleeve 13, it is convenient to change the position of the mounting frame; by providing the mounting plate 14, the mounting angle of the mounting frame can be adjusted.

[0037] In this embodiment, the support column includes a first longitudinal rod 16 and a second longitudinal rod 17. The bottom end of the first longitudinal rod 16 is horizontally hinged to the base, and the top end is slidably connected to the second longitudinal rod 17; the end of the second longitudinal rod 17 is fixedly connected to the first crossbeam 11. Changing the height of the second longitudinal rod 17 can change the installation height of the mounting frame and the seed metering device 1. The hinge connection between the first longitudinal rod 16 and the base allows the support column to be folded downward when not in use, thereby reducing the occupied space of the test bench. Specifically, the first longitudinal rod 16 and the second longitudinal rod 17 are both hollow rectangular rods. The length of the first longitudinal rod 16 is not less than that of the second longitudinal rod 17. The second longitudinal rod 17 is inserted into the interior of the first longitudinal rod 16 from the top. Bolts are also provided on the first longitudinal rod 16. When the first longitudinal rod 16 is adjusted into place, the bolts are tightened to fix it.

[0038] In this embodiment, the base includes a first horizontally arranged first connecting member 18 and a retaining frame symmetrically connected to both ends of the first connecting member 18. The first connecting member 18 is an open horizontally arranged U-shaped structure. The middle part of the first connecting member 18 has a notch, and a horizontal hinge shaft is arranged at the notch. The bottom end of the first longitudinal rod 16 is hinged on the horizontal hinge shaft. After the first longitudinal rod 16 is folded downward, it can be flush with the upper surface of the first connecting member 18. The retaining frame includes a first cross bar 19, a second cross bar 20 and a third cross bar 21. One end of the first cross bar 19 is vertically hinged to the end of the first connecting member 18, and the other end is vertically hinged to one end of the second connecting member 22. One end of the second cross bar 20 is vertically hinged to the other end of the second connecting member 22. The first cross bar 19 and the second cross bar 20 can both rotate in the horizontal plane. The second cross bar 20 and the seed metering device 1 are located on the same side of the support column to prevent the test bench from tipping over. The other end of the second cross bar 20 is connected to the third cross bar 21, and the third cross bar 21 can slide along the length direction of the second cross bar 20. When there are a large number of mounting frames and seeding devices 1 on the top of the support column and the total mass is large, and it is difficult to ensure the stability of the test bench only by the second cross bar 20, the third cross bar 21 can be moved and extended to improve the support effect of the test bench. Specifically, the second cross bar 20 and the third cross bar 21 are both hollow rectangular bars, and the length of the second cross bar 20 is not less than the third cross bar 21, and the third cross bar 21 is inserted into the second cross bar 20 from the end thereof; bolts are also provided on the second cross bar 20, and when the third cross bar 21 is adjusted into place, the bolts are tightened to fix it.

[0039] The bottoms of the first connecting member 18 , the second connecting member 22 and the third crossbar 21 are all provided with height-adjustable foot cups 23 to ensure the horizontal stability of the test bench.

[0040] When the test is completed, the seed metering device 1 and the mounting frame are disassembled, the second crossbeam 12 is retracted into the first crossbeam 11, and the second longitudinal bar 17 is retracted into the first longitudinal bar 16; the third crossbar 21 is retracted into the second crossbar 20, and the second crossbar 20 is rotated toward the first crossbar 19, and the two are folded, and then the first crossbar 19 and the second crossbar 20 are folded inward and folded with the first crossbar 19 on the other side; finally, the first longitudinal bar 16 is rotated downward, so that the test bench is folded as a whole, reducing its occupied space and facilitating carrying and transportation.

[0041] Adaptive changes made according to actual needs are all within the protection scope of this utility model.

[0042] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

Claims

1. A CNC multifunctional seed metering device comprehensive test bench, characterized in that: It includes a control system, a folding frame, a mounting frame and a seed meter fixed on the mounting frame; the mounting frame includes a first mounting seat, a first crank, a second crank and a second mounting seat, the first mounting seat is fixedly connected to the folding frame, the first crank is located above the second crank, and one end of both is horizontally hinged to the first mounting seat, and the other end is horizontally hinged to the second mounting seat, and the seed meter is fixed on the second mounting seat; a servo motor and a reducer electrically connected to the control system are also fixed on the first mounting seat, and the servo motor is transmission-connected to the end of the first crank or the second crank through the reducer, and is used to drive the first crank or the second crank to rotate.

2. The CNC multifunctional seed metering device comprehensive test bench according to claim 1 is characterized in that: A driving wheel is fixed on the output shaft of the reducer, a driven wheel is coaxially fixed on the hinge shaft connecting the second crank and the first mounting seat, and the driving wheel and the driven wheel are in transmission connection.

3. The CNC multifunctional seed metering device comprehensive test bench according to claim 2 is characterized in that: The driving wheel and the driven wheel are connected via a synchronous belt with teeth.

4. The CNC multifunctional seed metering device comprehensive test bench according to claim 1 is characterized in that: The mounting frame also includes a gravity compensation spring, one end of which is fixed to the middle of the first crank, and the other end of which is fixed to the end of the second crank and close to the second mounting seat.

5. The CNC multifunctional seed metering device comprehensive test bench according to any one of claims 1 to 4, characterized in that: The folding frame includes a base, a support column and a first crossbeam, the bottom end of the support column is connected to the base, the top end is connected to the middle part of the first crossbeam, both ends of the first crossbeam are connected to a second crossbeam that can move along its length direction, and the second crossbeam is detachably connected to the first mounting seat.

6. The CNC multifunctional seed metering device comprehensive test bench according to claim 5 is characterized in that: The second crossbeam is provided with a sliding sleeve which can slide along its length direction, the sliding sleeve is fixed with a mounting plate, the mounting plate is provided with a circular fixing hole and an arc-shaped fixing hole, and the first mounting seat is connected to the circular fixing hole and the arc-shaped fixing hole by bolts.

7. The CNC multifunctional seed metering device comprehensive test bench according to claim 6 is characterized in that: The support column includes a first longitudinal rod and a second longitudinal rod. The bottom end of the first longitudinal rod is horizontally hinged to the base, and the top end is slidably connected to the second longitudinal rod. The end of the second longitudinal rod is fixedly connected to the first crossbeam.

8. The CNC multifunctional seed metering device comprehensive test bench according to claim 7 is characterized in that: The base includes a first horizontally arranged first connecting member and a retaining frame symmetrically connected to both ends of the first connecting member, the middle part of the first connecting member is horizontally hinged to the bottom end of the first longitudinal rod; the retaining frame includes a first cross bar, a second cross bar and a third cross bar, one end of the first cross bar is vertically hinged to the end of the first connecting member, and the other end is vertically hinged to one end of the second connecting member, one end of the second cross bar is vertically hinged to the other end of the second connecting member, and the other end of the second cross bar is connected to the third cross bar, and the third cross bar can slide along the length direction of the second cross bar.

9. The CNC multifunctional seed metering device comprehensive test bench according to claim 8 is characterized in that: The bottoms of the first connecting member, the second connecting member and the third crossbar are all provided with height-adjustable foot cups.

10. The CNC multifunctional seed metering device comprehensive test bench according to claim 8, characterized in that: The first crossbeam and the second crossbeam, the sliding sleeve and the second crossbeam, the first longitudinal rod and the second longitudinal rod, and the second crossbeam and the third crossbeam are all detachably fixed by bolts.

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