RU192600U1 - The stand for accelerated testing of working bodies of tillage machines - Google Patents

Abstract

The utility model relates to test benches. A stand for accelerated testing of the working bodies of tillage machines, containing a gutter with soil, with a cross member on which an electric motor, gearbox, chain gear, brackets, tested working bodies, leveling rollers, cycle sensor are installed, working bodies are made to rotate relative to the stationary gutter, and to control the number of preset cycles and control the stand provides a control unit. The technical result consists in reducing energy intensity, material consumption, improving the accuracy of test results. 2 ill.

Description

The utility model relates to test benches and can be used to assess the wear resistance of the working bodies of tillage machines.

A similar analogue is known (a stand for accelerated testing of working bodies of machines operating in the soil of a.s. No. 1515087 A1 G01M 13/00), containing a circular soil channel with an abrasive mixture and a supporting frame with a drive, racks for installing the tested working bodies, a working roller for rolling abrasive mixture. It is equipped with a control system, including a power sensor, a measuring transducer, a regulating device, a signal level adjuster, a switching unit and starters.

A known analogue (a stand for accelerated testing of tillage working bodies of a.s. No. 2078325 A1 G01M 19/00) containing a frame kinematically connected to the drive, a soil trench, an arm for attaching the tested working bodies, a device for leveling and compacting the soil. The soil trench is made in the form of a corrugated cylinder with a wide base and a vertical wall. The trough is equipped with a drive in the form of a pin drive. Ring tires with rollers between them are placed on the outer vertical wall of the corrugated cylinder. A pair of sprocket drive sprockets are mounted on vertical shafts in the diametrical plane of the soil trough. The soil trough is provided with a frame and mounted between pairs of diametrically spaced radial bearings and horizontal supports evenly spaced from each other, placed under the base of the soil trough. An arm mounted along the diameter of the support chute for attaching the tested working bodies is presented in the form of a U-shaped beam and equipped with the ability to displace along it with grips with the tested working body and a device for leveling and compacting the soil.

The prototype of the utility model is a stand for accelerated testing of the working bodies of tillage machines (utility model patent No. 172842 RU, G01N 3/56, publ. July 26, 2017, bull. No. 21). The stand for accelerated testing of the working bodies of tillage machines contains a frame on which a chute with soil is mounted with the possibility of rotation from the drive, and there is also a bracket for attaching the tested working bodies and devices for leveling and compacting the soil in the chute. The trough is made in the form of a cylinder with a vertical wall, the diameter of which is greater than the height of the cylinder. The bracket for fastening the tested working bodies, equipped with a force measuring sensor, has the ability to rotate around its vertical axis together with the working bodies by 180 °, as well as raising / lowering the tested working bodies using pneumatic cylinders.

The disadvantages of the known stands are their high material consumption, energy consumption and a large number of moving units, the complexity of controlling the number of cycles, the high uneven wear of the tested working bodies.

The proposed utility model reduces energy consumption, material consumption, improves the accuracy of test results by automating tests, which are achieved by the fact that the working bodies are rotatable relative to the stationary trough, and a control unit is provided to control the number of specified cycles and control the stand.

In FIG. 1 shows a stand for accelerated testing of working bodies of tillage machines (side view), FIG. 2 is a plan view of FIG. one.

The stand for accelerated wear tests of tillage machines contains a groove 1 with soil, with a cross member 2 on which an electric motor 3 is installed, a gearbox 4, a chain gear 5, a rotator 6 with brackets 7 on which the tested working bodies 8 and leveling rollers 9 are mounted, a cycle sensor 10. On the rotator 6 there are installed pneumatic cylinders 11 for lifting the brackets 7, an electric motor 12, sprockets 13, chain transmissions 14, 15 of the mechanism for turning the working bodies through 180 °. To control the stand, a control unit 16 is mounted on the cross member 2. The rotator 6 is mounted on bearing bearings 17, 18 in the center of the groove 1. To protect the rotating axis 19, a casing 20 is provided.

The stand for accelerated testing of the working bodies of tillage machines works as follows.

Before testing, inspect the gutter 1 for the required amount of soil. After inspection, the cross members 2, rotator 6 and brackets 7 are cleaned of soil. The rotator 6 is scrolled by hand relative to the groove 1 with the soil and it is checked whether the working bodies 8 touch the groove 1. After inspection by the pneumatic cylinders 11, the working bodies 8 are lowered into the groove 1 with the soil. Depending on the required depth of travel, the working bodies 8 are rigidly fixed on the brackets 7. In the same way, the leveling rollers 9 are positioned relative to the soil surface. Before starting the stand, it is necessary to check the condition of the chain gears 5, 14, 15 and, if necessary, tension using adjusting devices (not shown). By means of the control unit 16, the electric motor 3 is started. The rotation of the rotator 6 with the working bodies 8 is carried out through the gearbox 4 and the chain gear 5. The cycle sensor 10 transmits information to the control unit 16 about the number of passes of the tested working bodies 8. After passing a predetermined number of cycles by the control unit 16 3 turns off. Through the control unit 16, a signal is supplied to the pneumatic cylinders 11 for lifting the working bodies 8 and rollers 9. Then, through the control unit 16, a signal is sent to the electric motor 12 of turning the working bodies 8 by 180 °. The rotation of the working bodies 8 and leveling rollers 9 is carried out through chain transmissions 15, 14 . Turning 180 ° working bodies 8, using the control unit 16, turns on the motor 3 in the opposite direction. When rotated by pneumatic cylinders 11, the working bodies 8 are lowered and deepened into the soil. After passing a predetermined number of cycles by the control unit 16, the electric motor 3 is turned off. Working bodies 8 are deepened with pneumatic cylinders 11. After removal of the tested working bodies 8 from the stand, the necessary measurements are made. If necessary, the test cycle can be repeated.

The proposed utility model provides a reduction in energy consumption, material consumption, improving the accuracy of test results due to test automation.

Sources:

1. A.S. No. 1515087 A1 G01M 13/00

2. A.S. 2078325 A1 G01M 19/00

3. Utility model patent No. 172842 RU, bench for accelerated testing of working bodies of tillage machines, G01N 3/56, published July 26, 2017, bull. Number 21

Claims (1)

A stand for accelerated testing of the working bodies of tillage machines, containing a gutter with soil, with a cross member on which an electric motor, gearbox, chain gear, brackets, tested working bodies, leveling rollers, and a cycle sensor are installed, characterized in that the working bodies are rotatable relative to a fixed trough, and for controlling the number of preset cycles and controlling the stand, a control unit is provided.

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