Auger soil feeding automatic control device for seeding assembly line

Abstract

The utility model relates to an automatic auger soil feeding control device for a seeding assembly line, which comprises a spiral conveying mechanism, an electric driving mechanism and an electric control mechanism, a feed port of the spiral conveying mechanism is used for being connected with a soil inlet bin, a discharge port of the spiral conveying mechanism is used for being aligned with the upper part of a hopper of the seeding assembly line, and the electric driving mechanism is connected with the spiral conveying mechanism; the electric control mechanism comprises a sensor and a switch loop, the sensor is used for aligning above a hopper of the seeding assembly line, the sensor is electrically connected with the switch loop, and the switch loop is located between the three-phase power supply and a driving motor of the electric driving mechanism. Therefore, the driving motor of the electric driving mechanism is controlled through the cooperation of the sensor and the switch loop, auger soil feeding is achieved through the spiral conveying mechanism and the electric driving mechanism, manual intervention is not needed, and the control device is simple, low in cost, high in practicability and high in operation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery and control, and in particular to an automatic control device for auger soil loading in a seeding production line. Background Technology

[0002] There are two methods for controlling soil application in existing seeding production lines:

[0003] The first method involves having one operator who visually observes the amount of soil in the hopper and manually controls the start and stop of the auger to manage the amount of soil in the hopper. However, this method requires a fixed operator, resulting in high operating costs, high work intensity, and low efficiency.

[0004] The second method relies on sensors such as distance or weight sensors to sense the amount of soil in the hopper. This requires a processor such as a PLC (Programmable Logic Controller) to collect the amount of soil and compare it with an internal preset threshold to control the start and stop of the auger and thus control the amount of soil in the hopper. However, this method has high investment and maintenance costs, which is difficult for farmers to accept.

[0005] In other words, there is a lack of a low-cost and highly efficient automatic control device for auger soil application on existing seeding production lines. Utility Model Content

[0006] The technical problem to be solved by this utility model is: This utility model provides an automatic control device for soil application by a screw conveyor in a seeding production line, which is low in cost and highly efficient in operation.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] In the first aspect, this utility model provides an automatic control device for auger soil loading in a seeding production line, including a screw conveyor mechanism, an electric drive mechanism and an electric control mechanism. The feed inlet of the screw conveyor mechanism is used to connect to the soil inlet bin and the discharge outlet is used to align with the top of the hopper of the seeding production line. The electric drive mechanism is connected to the screw conveyor mechanism.

[0009] The electrical control mechanism includes a sensor and a switching circuit. The sensor is used to align above the hopper of the seeding production line. The sensor is electrically connected to the switching circuit, which is located between the three-phase power supply and the drive motor of the electric drive mechanism.

[0010] The beneficial effects of this utility model are as follows: the drive motor of the electric drive mechanism is controlled by the cooperation of the sensor and the switch circuit, and the auger is used to load soil by the screw conveyor mechanism and the electric drive mechanism without manual intervention. The control device is simple, low in cost, highly practical and efficient.

[0011] Optionally, the sensor is a photoelectric sensor, the switching circuit includes a first intermediate relay, a second intermediate relay, a time relay, an AC contactor and a power switch, and the electronic control mechanism also includes a 24V DC power supply module;

[0012] The three phase wires of the drive motor are connected to the three-phase power supply after passing through the AC contactor. One phase wire of the three-phase power supply is electrically connected to the live wire terminal of the 24V DC power supply module, the normally open and normally closed contacts of the first intermediate relay, and the normally closed contact of the second intermediate relay. The neutral wire of the three-phase power supply is electrically connected to the neutral wire terminal of the 24V DC power supply module, the neutral wire terminal of the AC contactor, and the first coil terminal of the time relay.

[0013] The output terminal of the 24V DC power supply module is electrically connected to the power supply terminal of the photoelectric sensor, the first coil terminal of the first intermediate relay, and the first coil terminal of the second intermediate relay, respectively. The ground terminal of the 24V DC power supply module is electrically connected to the ground terminal of the photoelectric sensor. The common terminal of the photoelectric sensor is electrically connected to the second coil terminal of the first intermediate relay. The signal terminal of the photoelectric sensor is electrically connected to the second coil terminal of the second intermediate relay.

[0014] The signal terminal of the AC contactor is electrically connected to the normally open common terminal of the time relay and the normally closed common terminal of the second intermediate relay. The normally open contact of the time relay is electrically connected to the normally closed common terminal of the second intermediate relay. The second coil terminal of the time relay is electrically connected to the normally closed common terminal of the first intermediate relay. The normally closed contact of the second intermediate relay is electrically connected to the normally open common terminal of the first intermediate relay.

[0015] Optionally, the electrical control mechanism further includes a circuit breaker located between the three-phase power supply and the AC contactor.

[0016] Optionally, the electrical control mechanism further includes a thermal relay located between the AC contactor and the drive motor.

[0017] As described above, the control circuit is protected by thermal relays and circuit breakers.

[0018] Optionally, the electric drive mechanism is fixed at the discharge port of the screw conveyor mechanism. The electric drive mechanism also includes a small pulley, a belt, and a large pulley. The output end of the drive motor is connected to the small pulley. The small pulley is connected to the large pulley via the belt. The large pulley is connected to the screw shaft of the screw conveyor mechanism.

[0019] Optionally, the speed ratio between the small pulley and the large pulley is 6:1 to 10:1.

[0020] As described above, the speed reduction is achieved by setting the speed ratio between the small pulley and the large pulley, which meets the soil loading requirements and eliminates the need for an additional frequency converter.

[0021] Optionally, the spiral conveying mechanism includes a housing, a spiral shaft, and spiral blades. The housing is inclined, the spiral shaft is located inside the housing, and the spiral blades are distributed along the axial direction of the spiral shaft.

[0022] Optionally, the helical blades are distributed with a variable pitch along the axial direction of the helical shaft, and the pitch gradually decreases along the direction from the feed inlet to the discharge outlet.

[0023] As described above, the variable pitch design eliminates the need for an additional frequency converter, effectively controlling the amount of soil applied to meet the soil requirements for sowing and laying, while also reducing the frequency of frequent start-stop cycles of the drive motor.

[0024] Optionally, the diameter of the housing is between 100 mm and 150 mm.

[0025] Optionally, the screw conveyor mechanism further includes a moving component supported below the housing. Attached Figure Description

[0026] Figure 1 This is a schematic diagram illustrating the application of the auger soil-feeding automatic control device for a seeding production line according to this utility model.

[0027] Figure 2 This is an overall schematic diagram of an automatic control device for auger soil application in a seeding production line according to the present invention;

[0028] Figure 3 This is a schematic diagram of the electrical control of an automatic control device for soil loading via a screw conveyor in a seeding production line according to the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Screw conveyor mechanism; 11. Inlet; 12. Outlet; 13. Housing; 14. Screw shaft; 15. Screw blades; 16. Moving assembly;

[0031] 2. Electric drive mechanism; 21. Drive motor; 22. Small pulley; 23. Belt; 24. Large pulley;

[0032] 3. Electrical control mechanism; 31. Photoelectric sensor;

[0033] KA1, First intermediate relay; KA2, Second intermediate relay; KT, Time relay; KM, AC contactor; T, Power switch; DC, 24V DC power supply module; QF, Circuit breaker; FR, Thermal relay;

[0034] 100. Enter the earth storage bin;

[0035] 200. Seeding production line; 201. Hopper; 202. Soil. Detailed Implementation

[0036] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art. Example 1

[0037] Reference Figures 1 to 3 The present invention proposes an automatic control device for auger soil loading in a seeding production line 200, comprising a screw conveyor mechanism 1, an electric drive mechanism 2, and an electric control mechanism 3. The feed inlet 11 of the screw conveyor mechanism 1 is used to connect to the soil inlet 100, and the discharge outlet 12 is used to align with the top of the hopper 201 of the seeding production line 200. The electric drive mechanism 2 is connected to the screw conveyor mechanism 1.

[0038] In this embodiment, as Figure 3 As shown, the electrical control mechanism 3 includes a sensor, a switching circuit, a circuit breaker QF, a thermal relay FR, and a 24V DC power supply module DC. The sensor is used to align the sensor above the hopper 201 of the seeding production line 200. The sensor is electrically connected to the switching circuit, which is located between the three-phase power supply and the drive motor 21 of the electric drive mechanism 2.

[0039] Specifically, the sensor is a photoelectric sensor 31, which adopts a DC four-wire structure, normally open and normally closed functions, and the detection distance is adjustable from 1-10cm. The four wires of the photoelectric sensor 31 include a brown wire from the power supply terminal, a blue wire from the ground terminal, a white wire from the common terminal, and a black wire from the signal terminal.

[0040] Specifically, the switching circuit includes a first intermediate relay KA1, a second intermediate relay KA2, a time relay KT, an AC contactor KM, and a power switch T. The first and second intermediate relays KA1 and KA2 use two sets of changeover contacts and a 24V DC coil. The first intermediate relay KA1 is responsible for initial locking, and the second intermediate relay KA2 performs stop triggering. The time relay KT uses a normally open contact with a time-delay closing mechanism and a 24V DC coil. The AC contactor KM has a 220V AC coil voltage and controls the power supply to the drive motor 21 when energized or de-energized. The power switch T is used for start and stop and includes a status indicator light. The circuit breaker QF senses abnormal current or voltage signals in the circuit through a trigger, thereby cutting off the circuit to prevent damage to electrical equipment. The thermal relay FR is connected to the control circuit to cut off the circuit in case of overload. Both of these components protect the circuit. The 24V DC power supply module (DC) powers the photoelectric sensor 31 and the intermediate relays. It itself has the effect of AC-DC conversion and voltage reduction through a transformer or switching power supply circuit.

[0041] Therefore, in this embodiment, the three phase wires of the drive motor 21 are connected to the three-phase power supply via the AC contactor KM. One phase wire of the three-phase power supply is electrically connected to the live wire terminal of the 24V DC power module DC, the normally open and normally closed contacts of the first intermediate relay KA1, and the normally closed contact of the second intermediate relay KA2. The neutral wire of the three-phase power supply is electrically connected to the neutral wire terminal of the 24V DC power module DC, the neutral wire terminal of the AC contactor KM, and the first coil terminal of the time relay KT. The output terminal of the 24V DC power module DC is electrically connected to the power supply terminal of the photoelectric sensor 31, the first coil terminal of the first intermediate relay KA1, and the first coil terminal of the second intermediate relay KA2, respectively. The ground terminal of the 24V DC power module DC is electrically connected to the ground terminal of the photoelectric sensor 31. The common terminal of the photoelectric sensor 31 is electrically connected to the second coil terminal of the first intermediate relay KA1, and the signal terminal of the photoelectric sensor 31 is electrically connected to the second coil terminal of the second intermediate relay KA2. The signal terminal of AC contactor KM is electrically connected to the normally open common terminal of time relay KT and the normally closed common terminal of the second intermediate relay KA2. The normally open contact of time relay KT is electrically connected to the normally closed common terminal of the second intermediate relay KA2. The second coil terminal of time relay KT is electrically connected to the normally closed common terminal of the first intermediate relay KA1. The normally closed contact of the second intermediate relay KA2 is electrically connected to the normally open common terminal of the first intermediate relay KA1. Circuit breaker QF is located between the three-phase power supply and AC contactor KM, and thermal relay FR is located between AC contactor KM and drive motor 21.

[0042] In addition, the aforementioned electronic control mechanism 3 is housed within an electronic control housing, which protects the internal components. In other embodiments, the electronic control mechanism 3 also includes an emergency stop button, which can be manually activated in case of a malfunction.

[0043] Among them, regarding Figure 3 The circuit symbols in the text are explained as follows:

[0044] L1, L2, and L3 are the symbols for the three phase wires of a three-phase power supply. On the DC power module, L is the live wire symbol, and N is the neutral wire symbol. U, V, and W are the terminal symbols for the three phase wire connections on the drive motor 21. NC is normally closed, and NO is normally open. GND is ground. O1, O2, and O3 are three port symbols; if these three port symbols are the same, they indicate an electrical connection.

[0045] In this embodiment, as Figure 2 As shown, the electric drive mechanism 2 is fixed at the discharge port 12 of the screw conveyor mechanism 1. The electric drive mechanism 2 also includes a small pulley 22, a belt 23, and a large pulley 24. The output end of the drive motor 21 is connected to the small pulley 22. The small pulley 22 is connected to the large pulley 24 via the belt 23. The large pulley 24 is connected to the screw shaft 14 of the screw conveyor mechanism 1. The screw conveyor mechanism 1 includes a housing 13, a screw shaft 14, and screw blades 15. The housing 13 is inclined, the screw shaft 14 is located inside the housing 13, and the screw blades 15 are distributed along the axial direction of the screw shaft 14.

[0046] Therefore, the auger, consisting of the screw conveyor mechanism 1 and the electric drive mechanism 2, has also undergone the following structural improvements based on the volume of the hopper 201 of the seeding production line 200:

[0047] (1) The diameter of the housing 13 in this embodiment is 114 mm. In other embodiments, the diameter of the housing 13 is between 100 mm and 150 mm, which means it has the characteristic of small diameter.

[0048] (2) The drive motor 21 in this embodiment has a speed of 1440 rpm. At this time, the speed ratio between the small pulley 22 and the large pulley 24 is 6:1 to 10:1, which achieves deceleration and meets the soil loading requirements without the need for an additional frequency converter.

[0049] (3) In this embodiment, the spiral blades 15 have a variable pitch distribution along the axial direction of the spiral shaft 14, and gradually decrease in pitch along the direction from the feed inlet 11 to the discharge outlet 12. Specifically, for example... Figure 2 As shown, the pitch of the spiral blade 15 at the feed inlet 11 is P1=150mm, and the pitch of the spiral blade 15 at the discharge outlet 12 is P2=100mm. Without the need for an additional frequency converter, the amount of soil can be effectively controlled to meet the soil requirements for sowing and spreading, and the frequency of frequent start and stop of the drive motor 21 can be reduced.

[0050] In this embodiment, the screw conveyor 1 further includes a moving component 16, which is supported below the housing 13 to facilitate the movement of the screw conveyor.

[0051] In summary, the working process of this embodiment is as follows:

[0052] 1. Rotate the power switch T to the start position to start power supply. If the soil 202 in the hopper 201 has not reached the discharge port 12, that is, it has not blocked the light of the photoelectric sensor 31, the white wire of the photoelectric sensor 31 is the negative pole, the coil of the first intermediate relay KA1 is energized, and the coil of the AC contactor KM is energized through the normally open contact and normally open common terminal of the first intermediate relay KA1, thus driving the motor 21 to work.

[0053] 2. When the soil 202 in the hopper 201 rises to the discharge port 12, it blocks the light of the photoelectric sensor 31. The black wire of the photoelectric sensor 31 is the negative pole, the coil of the second intermediate relay KA2 is energized, the normally closed contact of the intermediate relay and the normally closed common terminal are disconnected, the AC contactor KM is de-energized, and the power supply to the drive motor 21 is stopped, thus stopping the soil loading.

[0054] 3. Power is supplied to the coil of time relay KT through the normally closed contact and normally closed common terminal of intermediate relay, triggering time relay KT to start timing. Soil 202 in hopper 201 continuously falls to spread soil. When it descends to the preset position where hopper 201 is not completely empty, time relay KT reaches the set time, and its normally open contact closes. Power is supplied to the coil of AC contactor KM through the normally closed contact of intermediate relay to attempt to restart AC contactor KM. However, if photoelectric sensor 31 is still blocked, it cannot be started; if the blocking of photoelectric sensor 31 is removed, drive motor 21 restarts.

[0055] This continuous cycle ensures that the amount of soil applied is sufficient to meet the needs of soil laying without overflowing the hopper 201.

[0056] In summary, the implementation logic of circuit control in this embodiment is as follows:

[0057] 1. Normal operation: The obstruction is removed → the white wire is turned on → the first intermediate relay KA1 is energized, the normally open first intermediate relay KA1 is closed → the AC contactor KM is energized through the second intermediate relay KA2 → the drive motor 21 runs, and the second intermediate relay KA2 is controlled by the black wire to be released.

[0058] 2. Triggering shutdown: When obstruction occurs, the white wire disconnects and the black wire becomes conductive, the second intermediate relay KA2 is energized, the main circuit of the AC contactor KM is cut off, the drive motor 21 stops, the first intermediate relay KA1 is released, and the time relay KT starts timing.

[0059] 3. Delayed recovery: When the time relay KT reaches the set time, the contacts close. If the obstruction is still present, the system is kept stopped through the time relay KT and the second intermediate relay KA2. If the obstruction is removed, the system automatically restarts.

[0060] In summary, this utility model controls the drive motor 21 of the electric drive mechanism 2 through the cooperation of sensors and switching circuits. The screw conveyor mechanism 1 and the electric drive mechanism 2 realize the auger to load soil without manual intervention. Moreover, the control device is simple, low-cost, highly practical and efficient.

[0061] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0062] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0063] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0064] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An automatic control device for auger soil application in a seeding production line, characterized in that, It includes a screw conveyor mechanism, an electric drive mechanism, and an electric control mechanism. The screw conveyor mechanism has an inlet for connecting to the soil inlet bin and an outlet for aligning with the top of the hopper of the sowing production line. The electric drive mechanism is connected to the screw conveyor mechanism. The electrical control mechanism includes a sensor and a switching circuit. The sensor is used to align above the hopper of the seeding production line. The sensor is electrically connected to the switching circuit, which is located between the three-phase power supply and the drive motor of the electric drive mechanism.

2. The automatic control device for auger soil application in a seeding production line as described in claim 1, characterized in that, The sensor is a photoelectric sensor, the switching circuit includes a first intermediate relay, a second intermediate relay, a time relay, an AC contactor and a power switch, and the electronic control mechanism also includes a 24V DC power supply module. The three phase wires of the drive motor are connected to the three-phase power supply after passing through the AC contactor. One phase wire of the three-phase power supply is electrically connected to the live wire terminal of the 24V DC power supply module, the normally open and normally closed contacts of the first intermediate relay, and the normally closed contact of the second intermediate relay. The neutral wire of the three-phase power supply is electrically connected to the neutral wire terminal of the 24V DC power supply module, the neutral wire terminal of the AC contactor, and the first coil terminal of the time relay. The output terminal of the 24V DC power supply module is electrically connected to the power supply terminal of the photoelectric sensor, the first coil terminal of the first intermediate relay, and the first coil terminal of the second intermediate relay, respectively. The ground terminal of the 24V DC power supply module is electrically connected to the ground terminal of the photoelectric sensor. The common terminal of the photoelectric sensor is electrically connected to the second coil terminal of the first intermediate relay. The signal terminal of the photoelectric sensor is electrically connected to the second coil terminal of the second intermediate relay. The signal terminal of the AC contactor is electrically connected to the normally open common terminal of the time relay and the normally closed common terminal of the second intermediate relay. The normally open contact of the time relay is electrically connected to the normally closed common terminal of the second intermediate relay. The second coil terminal of the time relay is electrically connected to the normally closed common terminal of the first intermediate relay. The normally closed contact of the second intermediate relay is electrically connected to the normally open common terminal of the first intermediate relay.

3. The automatic control device for auger soil application in a seeding production line as described in claim 2, characterized in that, The electrical control mechanism also includes a circuit breaker, which is located between the three-phase power supply and the AC contactor.

4. The automatic control device for auger soil application in a seeding production line as described in claim 2, characterized in that, The electrical control mechanism also includes a thermal relay, which is located between the AC contactor and the drive motor.

5. The automatic control device for auger soil application in a seeding production line as described in claim 1, characterized in that, The electric drive mechanism is fixed at the discharge port of the screw conveyor mechanism. The electric drive mechanism also includes a small pulley, a belt and a large pulley. The output end of the drive motor is connected to the small pulley. The small pulley is connected to the large pulley via the belt. The large pulley is connected to the screw shaft of the screw conveyor mechanism.

6. The automatic control device for auger soil application in a seeding production line as described in claim 5, characterized in that, The speed ratio between the small pulley and the large pulley is 6:1 to 10:

1.

7. The automatic control device for auger soil application in a seeding production line as described in claim 1, characterized in that, The spiral conveying mechanism includes a housing, a spiral shaft, and spiral blades. The housing is inclined, the spiral shaft is located inside the housing, and the spiral blades are distributed along the axial direction of the spiral shaft.

8. The automatic control device for auger soil application in a seeding production line as described in claim 7, characterized in that, The spiral blades are distributed with a variable pitch along the axial direction of the spiral shaft, and the pitch gradually decreases along the direction from the feed inlet to the discharge outlet.

9. The automatic control device for auger soil application in a seeding production line as described in claim 7, characterized in that, The diameter of the shell is between 100 mm and 150 mm.

10. The automatic control device for auger soil application in a seeding production line as described in claim 7, characterized in that, The spiral conveying mechanism also includes a moving component supported below the housing.

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