Gearbox test bench

Abstract

The utility model relates to the field of mechanical engineering and can be used for testing gearboxes. The stand comprises a drive motor 6 rigidly fixed on a frame 2, fixed movably on vertical guides 5 and on horizontal guides 3, movably connected by a screw gear 4 with the frame 2 and rigidly fixed on a plate with T-shaped slots 1, the output flange of the shaft 7 of the drive motor 6 is fixed with the input flange 8 of the cardan shaft 9, connected by the output flange 10 to the input flange of the shaft 11 of the gearbox 12, rigidly fixed on a frame 13, which is fixed with movable guides 14, which are rigidly fixed on a plate with T-shaped slots 1, the output flange of the shaft 15 of the gearbox 12 is fixed with the input flange 16 of the cardan shaft 17, the output flange 18 of which is fixed with the output flange of the shaft 19 of the loading motor 20, which is rigidly fixed on a frame 21 fixed movably on vertical guides 22 and on horizontal guides 23,movably connected by a screw transmission 24 to a frame 21 and rigidly fixed on a plate with T-shaped slots 1, a control unit (not shown in the drawing), an engine control panel with monitors (not shown in the drawing), sensors (not shown in the drawing). The technical effect consists in expanding the universal means of bench equipment, ensuring the performance of resource tests of gearboxes without additional costs for selecting equipment for various dimensions of the units being tested. 1 ill.,

Description

[0001] The utility model relates to the field of mechanical engineering and can be used for testing gearboxes.

[0002] Among the well-known stands, it is worth highlighting the stand for running in and testing gearboxes of the KS series from the KOPIS company (company website https: / / www.kopis.ru / products / 139, access date 02 / 01 / 2026).

[0003] The disadvantage is that the frame on which the engines are mounted does not allow changing the height of the engine mounts and testing gearboxes of different sizes.

[0004] A test rig for testing automatic transmissions of vehicles is known (see SU 1095049 A, G01M 13 / 00, published 30.05.1984), comprising a drive motor kinematically connected to the input shaft of the automatic transmission being tested, a loader kinematically connected to the output shaft of the automatic transmission being tested, analog electric sensors for the speed of rotation of the input and output shafts of the automatic transmission being tested, and a control system.

[0005] The disadvantage of the stand is the lack of adjustable supports for the loading and drive motors and movable carriages in the design.

[0006] A rig for running-in and testing vehicle units is known (see Russian Federation Patent No. 146850 U1 for Utility Model, G01M 15 / 02, published October 20, 2014), comprising a drive motor, a kinematically connected test unit, oil lines, and control instruments. The rig's hydraulic system is connected to the test unit via lines and includes a pressure pump, a hydrocyclone oil filter, a torque converter, a valve box, and an oil cooler, all interconnected by main lines. The rig is additionally equipped with a process filter, a bypass valve, and a ball valve.

[0007] The disadvantage of the stand is the impossibility of carrying out resource tests, since the design does not have a second loading machine on the output shaft, as well as adjustable supports for the loading and drive motors and movable carriages.

[0008] Close to the proposed utility model in terms of the totality of its essential features is a test rig for gearboxes (see patent No. 82329 U1 for a utility model, G01M 13 / 02, published on 20.04.2009), comprising a frame with a support for fastening the gearbox under test, a drive motor, the shaft of which is kinematically connected to the drive shaft of the gearbox under test, and a load motor, the shaft of which is kinematically connected to the driven shaft of the gearbox under test, characterized in that the drive motor is connected to the drive shaft of the gearbox under test by means of a drive flange, a drive cardan shaft and a drive flange, wherein the drive flange is fastened to the shaft of the drive motor, the drive flange is fastened to the drive shaft of the gearbox under test, and the drive cardan shaft is fastened between the drive and drive flanges.

[0009] The disadvantage of this stand is the lack of adjustment of the support of the tested unit and the lack of adjustment of the carriages or engine supports in height.

[0010] This rig, even with adjustable cardan shafts and drive motors sliding along guides, still doesn't provide complete versatility or ease of installation for test units with varying input and output shaft heights. Most cardan shafts operating at high torque and speeds, connecting the input and output shafts of the test unit, have relatively small inclination angles, which, in turn, requires the manufacture of additional tooling.

[0011] The technical result of using the utility model is the expansion of universal bench equipment, ensuring the performance of resource tests of gearboxes without additional costs for selecting equipment for various dimensions of the units being tested.

[0012] The specified technical result is achieved in that the gearbox testing rig consists of a plate with T-shaped slots, a height-adjustable frame mounted on it for fastening the gearbox, an adjustable frame in the horizontal and vertical direction for fastening the drive machine, which is connected by the output flange of the shaft to the input flange of the cardan shaft, which is connected by the output flange to the input flange of the gearbox shaft, an adjustable frame in the horizontal and vertical directions for fastening the loading machine, which is connected by the output flange of the shaft to the output flange of the cardan shaft, which is connected by the input flange to the output flange of the shaft of the gearbox being tested.

[0013] Fig. 1 shows the design drawing of the gearbox test bench.

[0014] The stand comprises a drive motor 6 rigidly fixed on a frame 2, fixed movably on vertical guides 5 and on horizontal guides 3, movably connected by a screw gear 4 with the frame 2 and rigidly fixed on a plate with T-shaped slots 1, the output flange of the shaft 7 of the drive motor 6 is fixed with the input flange 8 of the cardan shaft 9, connected by the output flange 10 to the input flange of the shaft 11 of the gearbox 12, rigidly fixed on the frame 13, which is fixed with movable guides 14, which are rigidly fixed on the plate with T-shaped slots 1, the output flange of the shaft 15 of the gearbox 12 is fixed with the input flange 16 of the cardan shaft 17, the output flange 18 of which is fixed with the output flange of the shaft 19 of the loading motor 20, which is rigidly fixed on frame 21, movably fixed on vertical guides 22 and on horizontal guides 23,movably connected by a screw transmission 24 to a frame 21 and rigidly fixed on a plate with T-shaped slots 1, a control unit (not shown in the drawing), a control panel for engines with monitors (not shown in the drawing), sensors (not shown in the drawing).,

[0015] The stand operates as follows.

[0016] Depending on the overall dimensions of the gearbox being tested, guides 14 are installed in the position required for installing cardan shaft 9 and cardan shaft 17. In preparation for testing, the drive motor 6 is set to the required height to ensure the angles of the cardan shaft 9 that are acceptable for operation by means of the vertical guides 5 and the required distance between the output flange of the shaft 7 of the drive motor and the input flange of the shaft 11 of the gearbox 12 by means of the horizontal guides 3. The output flange of the shaft 7 is connected to the input flange 8 of the cardan shaft 9 and the output flange 10 of the cardan shaft 9 to the input flange of the shaft 11 of the gearbox 12. The loading motor 20 is set to the required height to ensure the angles of the cardan shaft 17 that are acceptable for operation by means of the vertical guides 22 and the required distance between the output flange of the shaft 19 of the loading motor and the output flange of the shaft 15 of the gearbox 12.The output flange of shaft 19 is connected to the output flange 18 of cardan shaft 17 and the input flange 16 of cardan shaft 17 to the output flange of shaft 15 of gearbox 12.

[0017] Drive motor 6 rotates input flange of shaft 11 of gearbox 12 to a specified rotation speed (information on rotation speed is recorded by a sensor) due to installed cardan shaft 9, depending on the engaged gear in gearbox 12, loading machine 20 creates reverse torque (information on torques from loading motor 20 and drive motor 6 is recorded by sensors and transmitted to the monitors of the engine control panel) to the output flange of shaft 15 of gearbox 12. Tests are carried out on each gear with a specified rotation speed of drive motor 6 and torque of loading machine 20.

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