RU214123U1 - Stand for testing seeding units of precision seeders - Google Patents

Abstract

The utility model relates to methods and means for assessing the quality indicators of the technological process by sowing machines of seeders, in particular, for assessing the uneven sowing of seeds. The stand for testing the seeding machines of precision seeders contains a seed hopper, a seeding machine with a seeding disc installed in a vacuum chamber and a coulter, an electric drive for the rotation of the seeding disc, two capacitive sensors. The first sensor is installed at the exit from the sowing disc, the second sensor is located in the coulter base area. A pallet is mounted below the second sensor. The stand for testing the sowing machines of precision seeders is equipped with a controlled unit for creating a vacuum in the vacuum chamber and a controller that receives signals from capacitive sensors to control the operating modes of the electric drive of the sowing machine disk and the controlled unit for creating a vacuum. EFFECT: possibility of regulation of vacuum parameters and modes of operation of the electric drive of the disc of the sowing apparatus for assessing the unevenness of sowing seeds is provided. 1 ill.

Description

The utility model relates to methods and means for assessing the quality indicators of the technological process by sowing machines of seeders, in particular, for assessing the uneven sowing of seeds.

Known stand for testing seeding machines precision seeding (AS USSR No. 327390 from 01/15/1970), containing the studied seeding machine, the receiving conveyor in the form of an adhesive tape and a drive. The disadvantage of this stand for testing the sowing machines of seeders is the high complexity of testing and counting seeds, fixing their number and relative position on an adhesive tape.

Known stand for testing seeding machines (RF Patent for utility model No. 49674 dated 06/28/2005), containing concrete and sand annular paths, a rotating frame with a center of rotation in the center of the circle of tracks, fixed on it the investigated seeding machine, a drive, a digital camera with control from the microcontroller unit and the control system. The disadvantage of this stand is its bulkiness and significant amounts of preparatory work during testing.

A well-known stand for monitoring the operation of sowing machines of seeders (RF Patent for utility model No. 60300 dated 07/11/2006), including a sowing machine, a drive mechanism, a means of controlling the operating mode and a mechanism for fixing the seeded material, consisting of a quartz sensor and a pneumatic device for removing seeds from the sensor area after the first impact on the receiving surface.

The disadvantage of this stand is the low sensitivity of the contact type sensor.

A stand is known for testing sowing machines for single-grain sowing (RF Patent for utility model No. 203635 dated 10/12/2020), including a power plant, a set of sensors, a receiving device for sown seeds, made in the form of a piezoelectric sensor with a signal amplifier and a mechanical recorder. The disadvantage of this stand is the low sensitivity of the piezoelectric sensor and the complexity of processing the results recorded by a mechanical recorder.

Known stand for testing seeding machines precision seeders (RF Patent for utility model 201770 dated 06/22/2020), including the studied seeding machine with a seeding disc and a coulter, a drive, a system for monitoring and fixing the seeded material containing two capacitive sensors and a cellular tray without a bottom , each cell of which is equipped with a counter of seeds falling into it.

The disadvantage of this stand is the inability to adjust the parameters of the vacuum and the mode of operation of the electric motor of the seeding disc drive.

The technical result of the proposed utility model lies in the possibility of adjusting the vacuum parameters and operating modes of the electric drive of the sowing machine disc, which makes it possible to evaluate the quality indicators of the technological process performed by the sowing machines of seeders, in particular, to evaluate the unevenness of seeding.

The technical result is achieved by the fact that the stand for testing the seeding machines of precision seeders, including a seed hopper, a seeding machine with a seeding disc installed in a vacuum chamber and a coulter, an electric drive for rotating the seeding disc, two capacitive sensors, the first sensor is installed at the outlet with seed disc, the second sensor is in the area of the coulter base, the pallet is mounted below the second sensor, according to the utility model, the stand for testing seeding machines of precision seeders is equipped with a controlled installation for creating a vacuum in the vacuum chamber and a controller that receives signals from capacitive sensors to control operating modes an electric drive of the disc of the sowing machine and a controlled installation for creating a vacuum in the vacuum chamber.

The essence of the utility model is illustrated by a figure, which shows a diagram of a stand for testing seeding machines of precision seeding seeders.

The test bench consists of a seeding machine under investigation with a hopper 1 for seeds, a seeding disc 2 and a coulter 3. The seeding disc 2 is installed in a vacuum chamber 4. To create a vacuum in the vacuum chamber 4, a controlled installation 5 is used to create a vacuum. The rotation of the sowing disc 2 is carried out by an electric drive 6. The stand is equipped with a controller 7, which processes the signals received from the capacitive seeding sensors 8 and 9, and which controls the operating modes of the electric drive 6 and the controlled installation 5 to create a vacuum. Tray 10 is installed to collect seeds.

The stand works as follows. With the help of the controller 7, the required mode of operation of the sowing disc 2 is set, with the help of a controlled installation 5 for creating a vacuum, the required suction power is set, taking into account the technological requirements of the manufacturer of the seeding machine under study. The first capacitive seeding sensor 8 is installed at the exit from the seeding disc 2, and the second capacitive seeding sensor 9 is in the area of the base of the coulter 3 and connected to the controller 7. During the test, the seeds from the hopper 1 are fed into the coulter 3 one by one by the seeding disc 2. Falling seeds fly through the sensitive zones of the sensors 8, 9 and fall into the 10 tray for collecting seeds. The signals generated during the flight of seeds through the sensitive areas of the sensors 8, 9 are processed by the controller 7 and stored in its read-only memory (ROM). At the end of the testing of the sowing machine, the data from the ROM of the controller 7 is transferred to a computer for their subsequent processing in order to assess the unevenness of seeding.

Thus, the proposed stand allows you to adjust the parameters of the vacuum and the operating modes of the electric drive of the disc of the sowing machine and evaluate the uneven sowing of seeds.

Claims (1)

Stand for testing seeding machines of precision seeding machines, including a seed hopper, a seeding machine with a seeding disc installed in a vacuum chamber and a coulter, an electric drive for rotating the seeding disc, two capacitive sensors, the first sensor is installed at the outlet of the seeding disc, the second sensor - in the coulter base area, the pallet is mounted below the second sensor, characterized in that the bench for testing seeding machines of precision seeders is equipped with a controlled unit for creating a vacuum in the vacuum chamber and a controller that receives signals from capacitive sensors to control the modes of operation of the seeding machine disc electric drive and controlled installation for creating a vacuum.

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