RU122486U1 - STAND FOR CAR TEST - Google Patents

Abstract

1. Stand for testing cars, containing a base and a loading device equipped with lifting mechanisms, characterized in that the base is made with guides on which the carriage is mounted with the possibility of movement, while the stand has at least two loading devices installed on the carriages and made in the form of roll modules, consisting of two support platforms installed with the possibility of lifting and turning by means of lifting mechanisms around the axes located at their ends. 2. The stand according to claim 1, characterized in that the number of roll modules is greater than or equal to the number of vehicle axles. The stand according to claim 1 or 2, characterized in that hydraulic or pneumatic cylinders or a screw-nut mechanism are used as lifting mechanisms. The stand according to claim 1, characterized in that the movement of the carriages along the guides is carried out using a "screw-nut" mechanism or a rack and pinion mechanism or using a hydraulic cylinder.

Description

The utility model relates to test equipment, in particular to stands, which simulate operational loads on a car.

Each manufacturer of automotive equipment to increase reliability is forced to produce certain types of tests and tests. For dump trucks, an important indicator is the stability of the vehicle during unloading. For this, each specific model of the truck is tested not only for the maximum angle of lateral slope at which unloading is possible, but also structural, operational and other factors affecting lateral stability are determined. For these purposes, use platforms with known slopes, wheel stands on one side of the car, simulating a slope. In these cases, certain problems arise with the safety and preservation of the tested equipment at critical slope levels.

The use of special stands solves these problems and allows you to conduct test tests with more accurate results with less expensive means.

A known test bench for vehicles containing a base, load drives, with drive shafts of which are connected elements for engagement with the vehicle tracks, a device for securing a vehicle, two platforms, two supports, one of which is fixedly mounted on the base, and the other is installed with the possibility of horizontal movement from the drive to the side of the first, pivoting wheels placed on the supports, on each of which a corresponding platform is pivotally fixed, support rollers, additionally coupled on each platform, additional clutch elements with the vehicle’s tracks and the drives for changing the position of the platforms in the vertical plane (RF patent No. 20100212, IPC G01M 17/00, publ. 30.03.1994).

This stand has a complex structure and is not intended for testing dump trucks.

Also known is the test bench for the vehicle supporting system selected as the closest analogue, comprising a base with a loading device installed on it, consisting of servo-hydraulic cylinders, two supports, the front of which is double and floating in the vertical direction, and the rear one contains in the upper part with both sides of the cylindrical hinges, a front load beam connected in the middle by means of spherical hinges with a front support, and a rear load beam connected in the middle oh with the base of the stand through a spherical hinge, and brackets rigidly connected with the ends of the rear load beam and with the upper cylindrical hinges (RF patent No. 20100212, IPC G01M 17/00, publ. 30.03.1994).

This stand allows you to simulate the loads created during the movement on the roadway. The disadvantage of this stand is the lack of the ability to test a real car, including stability when lifting the platform of the dump truck.

The technical result of the claimed stand is to expand the capabilities of bench equipment by providing testing of a real car, including stability when lifting the platform of the tipper.

The technical result is achieved in that in a test bench for cars containing a base and a loading device provided with lifting mechanisms, the base is made with guides on which the carriage is mounted with the possibility of movement, while the stand has at least two loading devices mounted on carriages and made in the form of roll modules, consisting of two supporting platforms installed with the possibility of lifting and turning with the help of lifting mechanisms around the axes placed at their ends. In the particular case of execution, the number of roll modules can be greater than or equal to the number of vehicle axles, hydraulic or pneumatic cylinders or a screw-nut mechanism can be used as lifting mechanisms, and the movement of the carriages along the rails is carried out using a screw-nut mechanism or a rack mechanism or with using the hydraulic cylinder.

This set of essential features characterizing the claimed stand allows us to ensure the stability of the real car, including when lifting the platform of the tipper and thereby significantly expand the capabilities of the stand equipment.

The implementation of the base with guides on which the carriage is mounted with the possibility of movement, as well as the fact that the stand has at least two loading devices mounted on the carriages and made in the form of roll modules, consisting of two supporting platforms installed with the possibility of lifting and rotation with the help of lifting mechanisms around the axes located at their ends, allows you to set bearing pads for each axis of a real car, tilt bearing pads at different angles and in different directions, lyat the voltage in the carrier vehicle systems (e.g., strain measurement method) at different angles lifting platform, as well as the maximum allowable angles unloading platforms, which can significantly enhance the ability of the bench equipment.

Analysis of the known technical solutions for scientific, technical and patent documentation showed that the set of essential features of the proposed solution was not previously known, therefore, it meets the patentability condition of “novelty”.

The claimed technical solution is illustrated by the drawings:

figure 1 is a schematic illustration of a test bench with a car installed on it;

figure 2 is the same, rear view (shown module in section);

figure 3 - the same, set the test mode "roll to the left";

figure 4 - the same, set the test mode "roll to the right";

figure 5 - the same, set the test mode "raised axis";

6 - the same, set the test mode "raised axis, roll to the right";

7 is a schematic illustration of a module mounted on a base carriage (shown in section).

The test bench for cars contains a base 1, at least two loading devices in the form of roll modules 2, equipped with lifting mechanisms 3. The base 1 is made with guides 4 on which the carriage 5 is mounted with the possibility of moving. The roll modules 2 are mounted on the carriages 5 and consist of two supporting platforms 6 and 7, the upper and lower, respectively, which are mounted with the possibility of lifting and turning with the help of lifting mechanisms 3 around the axes 8 and 9 located at their ends.

The number of modules of the roll 2 is equal to the number of axles of the car, and in the case of equipping the car with an outrigger, an additional module may be provided.

As the lifting mechanisms 3 use a hydraulic or pneumatic cylinder or a screw-nut mechanism.

The movement of the carriages 5 along the guides 4 is carried out using the mechanism 10 screw-nut or rack mechanism or using a hydraulic cylinder.

Modules 2 are moved to positions with distances A, B, C (Fig. 1) equal to the interaxal distances of the tested vehicle and the distance to the outrigger (if any).

To carry out the test, roll 2 modules are installed under each vehicle axis at the required angle in the right direction (depending on the test program), after which the tipper platform is hoisted. They make measurements of the tilt angles of the platform to determine the maximum permitted tilt angles of the unloading pads, the relative position of the chassis units, the strain gauging of the load-bearing components of the car, and other measurements.

The claimed technical solution allows to test a real car, including stability when lifting the platform of the dump truck, and thereby significantly expand the capabilities of bench equipment.

The claimed technical solution meets the requirement of industrial applicability and is possible for implementation on standard processing equipment.

Claims (4)

1. A test bench for vehicles, comprising a base and a loading device provided with lifting mechanisms, characterized in that the base is made with guides on which the carriage is mounted to move, and the stand has at least two loading devices mounted on the carriages and made in the form of roll modules, consisting of two supporting platforms installed with the possibility of lifting and turning with the help of lifting mechanisms around the axes placed at their ends. 2. The stand according to claim 1, characterized in that the number of roll modules is greater than or equal to the number of axles of the car. 3. The stand according to claim 1 or 2, characterized in that as the lifting mechanisms use hydraulic or pneumatic cylinders or a screw-nut mechanism. 4. The stand according to claim 1, characterized in that the movement of the carriages along the guides is carried out using a screw-nut mechanism or rack and pinion mechanism or using a hydraulic cylinder.