SU832390A1

SU832390A1 - Track for testing tractors

Info

Publication number: SU832390A1
Application number: SU792805489A
Authority: SU
Inventors: Владимир Владимирович Яцкевич; Петр Адамович Амельченко; Владимир Петрович Бойков; Александр Викторович Войтиков; Валерий Владимирович Гуськов; Светлана Ивановна Сизова; Константин Афанасьевич Якимук
Original assignee: Белорусский Ордена Трудового Красногознамени Политехнический Институт; Производственное Объединение "Минскийтракторный Завод Им.B.И.Ленина"
Priority date: 1979-09-13
Filing date: 1979-09-13
Publication date: 1981-05-23

Description

Изобретение относится к средствам для испытания транспортных средств, в частности к трекам для испытания тракторов.The invention relates to means for testing vehicles, in particular to tracks for testing tractors.

Известен трек для испытания тракторов , содержащий беговую дорожку и устройство для удержания транспортного средства на беговой дорожке [1].A known track for testing tractors containing a treadmill and a device for holding the vehicle on a treadmill [1].

Однако этот трек не позволяет проводить испытание крутосклонных и низк.оклиренсных тракторов в условиях движения по склону.However, this track does not allow testing of steep and low-clearance tractors in hillside conditions.

Цель изобретения - обеспечение возможности испытания крутосклонных и низкоклиренс.ных тракторов на склоне с исключением влияния сползания, трактора на точность измеряемых параметров .The purpose of the invention is the ability to test steep and low clearance tractors on a slope with the exception of the influence of sliding, the tractor on the accuracy of the measured parameters.

Указанная цель достигается тем, что беговая дорожка и устройство для удержания транспортного средства на ней расположены на склоне, при этом рельс установлен на основании с возможностью поворота относительно плоскости беговой дорожки.This goal is achieved by the fact that the treadmill and the device for holding the vehicle on it are located on a slope, while the rail is mounted on the base with the possibility of rotation relative to the plane of the treadmill.

Кроме того, с целью замера боковых сил, действующих'на трактор, устройство для удержания снабжено тензобалкой для соединения с трактором.In addition, in order to measure the lateral forces acting on the tractor, the holding device is equipped with a strain gauge for connecting to the tractor.

При этом, с целью упрощения подготовки испытаний и увеличения числа замеряемых параметров, устройство для удержания и тензобалка соединены шарнирно.At the same time, in order to simplify the preparation of tests and increase the number of measured parameters, the holding device and the strain gauge are pivotally connected.

На фиг. 1 изображена схема трека при испытании на нем крутосклонного трактора; на фиг. 2 - то же, при испытании низкоклиренсного (равнинного) трактора; на фиг. 3 - схема устройства для удержания трактора на беговой дорожке и подвижное основание (вид сзади) ; на фиг. 4 - то же, вид сбоку .In FIG. 1 shows a diagram of a track when testing a steeply inclined tractor; in FIG. 2 - the same, when testing a low-clearance (plain) tractor; in FIG. 3 is a diagram of a device for holding a tractor on a treadmill and a movable base (rear view); in FIG. 4 is the same side view.

Трек содержит беговую дорожку 1, размещенную на склоне, рельс 2 для ; удержания трактора на траектории, который установлен на основании 3.The track contains a treadmill 1 located on a slope, rail 2 for; holding the tractor on the trajectory, which is installed on the basis of 3.

Основание 3 имеет шарнирную опору 4 и. фиксируется под различными углами посредством опоры 5. Для связи рельса с корпусом трактора и замера боковых сил, действующих на трактор, служит устройство, состоящее из ролика 6, размещенного в корпусе 7 на оси 8, и тензобалка 9, которая соединена с корпусом трактора 10 посредством кронштейна 11, ас корпусом ролика - шарниром 12.The base 3 has an articulated support 4 and. it is fixed at various angles by means of support 5. To connect the rail with the tractor body and measure the lateral forces acting on the tractor, a device consisting of a roller 6 placed in the body 7 on the axis 8 and a strain gauge 9, which is connected to the tractor body 10 by means of bracket 11, as roller housing - hinge 12.

4.4.

Испытание трактора.на треке производят следующим образом.Tractor test. On the track as follows.

При испытании крутосклонных тракторов основание 3 с рельсом 2 устанавливается .к поверхности трека под углом, равным углу склона. К корпусу трактора 10 крепится посредством кронштейна 11 ролик 6 с корпусом 7 и тензобалкой 9. Для обеспечения устойчивого движения и измерения боковых сил, действующих на переднюю и заднюю оси трактора, устройство для удержания трактора устанавливается под передней и задней осями трактора.. Трактор 10 с закрепленными на'нем упомянутыми устройствами вводится в зацепление с рельсом 2. Шарнир 12 обеспечивает свободное качение ролика 6, исключа!ощее действие на него веса трактора. В процессе движения трактора по склону замеряются боковые силы, действующие на оси трактора и ряд других параметров, характеризующих работу трактора на склоне (крутящие моменты на колесах, радиусы качения колес, силы тяги трактора, сопротивление качению и др.).When testing steeply inclined tractors, the base 3 with the rail 2 is installed. To the track surface at an angle equal to the angle of the slope. A roller 6 with a housing 7 and a load rail 9 is attached to the tractor body 10 by means of an arm 11. To ensure stable movement and measure the lateral forces acting on the front and rear axles of the tractor, a device for holding the tractor is installed under the front and rear axles of the tractor .. Tractor 10 s the devices mentioned above are engaged into engagement with the rail 2. The hinge 12 provides free rolling of the roller 6, excluding the greater effect of the weight of the tractor on it. In the process of tractor moving along the slope, the lateral forces acting on the tractor axis and a number of other parameters characterizing the operation of the tractor on the slope (torque on wheels, rolling radii of the wheels, tractor traction, rolling resistance, etc.) are measured.

При смене шин на тракторе или изменении давления воздуха в них устройство для удержания трактора на траектории не требует переналадки, так как связь тензобалки с корпусом шарнирная .When changing the tires on the tractor or changing the air pressure in them, the device for holding the tractor on the trajectory does not require readjustment, since the connection of the strain gauge with the body is hinged.

При испытании низкоклиренсных (равнинных тракторов) основание 3 с рельсом 2 опускается на .поверхность беговой дорожки 1 трека и закрепляется . Далее процесс испытаний проходит аналогично.When testing low-clearance (flat tractors), the base 3 with the rail 2 is lowered onto the surface of the treadmill 1 of the track and fixed. Further, the test process is similar.

Таким образом, предлагаемый трек обеспечивает возможность испытания крутосклонных и низкоклиренсных тракторов насклоне (с исключением влияния сползания трактора) на точность измеряемых параметров, что позволяет получить более точные данные о влия нии крутизны склона на эксплуатацион,ные показатели трактора, которые используются при выборе его оптимальных конструктивных параметров на стадии проектирования.Thus, the proposed track makes it possible to test steeply inclined and low-clearance tractors on a slope (with the exception of the influence of tractor sliding) on the accuracy of the measured parameters, which allows more accurate data on the influence of the steepness of the slope on the operational performance of the tractor, which are used when choosing its optimal design parameters at the design stage.

Claims

The invention relates to means for testing vehicles, in particular tracks for testing tractors. A known track for testing tractors comprises a treadmill and a device for holding a vehicle on a treadmill fl. However, this track does not allow for the testing of steep and low-level tractors in conditions of motion on a slope. The purpose of the invention is to enable the testing of steep and low-ground tractors on a slope with the exception of the influence of tractor creep on the accuracy of measured parameters. This goal is achieved by the fact that the skid track and device for holding the vehicle on it are located on a slope, with the rail mounted on the base with the possibility of rotation relative to the plane of the treadmill. In addition, for the purpose of measuring lateral forces acting on the tractor, the containment device is provided with a strainer for coupling to the tractor. At the same time, in order to simplify the preparation of tests and increase the number of measured parameters, the holding device and the strain gage are pivotally connected. FIG. 1 shows a track diagram when a steep-slope tractor is tested on it; in fig. 2 - the same, when testing a low-ground (flat) tractor; in fig. 3 is a diagram of a device for holding a tractor on a treadmill and a movable base (rear view); in fig. 4 - the same, side view. The track contains a treadmill 1 placed on a slope, a rail 2 for keeping the tractor in a path, which is mounted on the base 3. The base 3 has a hinge support 4 and. is fixed at different angles by means of support 5. To connect the p & s to the tractor body and measure the lateral forces acting on the tractor, a device consists of a roller 6 placed in the body 7 on the axis 8 and a strainer 9, which is connected to the tractor body 10 by means of the bracket 11, and with the ship body by the hinge 12. The tractor is tested on the track as follows. When testing steep-slope tractors, the base of the 3-rail is set. to the track surface at an angle equal to the angle of the slope. To the tractor tractor 10 box, the roller b with the housing 7 and the strainer 9 is fixed by means of the bracket 11. The tractor 10 with the aforementioned devices fixed with it is brought into engagement with the rail 2. The hinge 12 provides free rolling of the roller b, excluding the effect of the weight of the tractor on it. In the process of moving the tractor along the slope, lateral forces acting on the tractor axles and a number of other parameters characterizing the tractor operation on the slope (wheel torque on wheels, wheel rolling radii, tractor tractor pull, rolling resistance, etc.) are measured. When changing tires on a tractor or changing the air pressure in them, the device for keeping the tractor on a trajectory does not require readjustment, since the connection between the load carrier and the hinge case. When testing low-ground (flat tractors), the base 3 with the rail 2 is lowered onto the surface of the treadmill 1 track and secured with. Further, the test process is similar. Thus, the proposed track provides the ability to test steep and low-ground tractors on a slope (with the exception of the impact of tractor slipping) on the accuracy of measured parameters, which allows to obtain more accurate data on the effect of slope on tractor its optimal design parameters at the design stage. 1. Track for testing tractors, comprising a treadmill and a device for holding a vehicle on a treadmill, made in the form of a rail and a guide roller cooperating with it, housed in a housing connected to the frame of the vehicle, so that, in order to enable the testing of steep and low clearance tractors on a slope with the exception of the impact of tractor creep on the accuracy of the measured parameters, the treadmill and the device for holding A vehicle on it is located on a slope, with the rail mounted on the base with the possibility of rotation relative to the flatness of the treadmill.

2. The track according to claim 1, characterized in that, in order to measure lateral forces acting on the tractor, the holding device is provided with a strainer for connection to the tractor.

3. The track according to claim 1, characterized in that, in order to simplify the preparation of the tests and increase the number of parameters to be measured, the holding device and the strainer are pivotally connected. Sources of information taken into account in the examination 1. USSR author's certificate in application No. 2756656/11, cl. G 01 M 17/02, 08.05.79 (prototype).

F (g. 1

FIG. 2