Fatigue-testing machine for brake drum
Affiliated technical field the present invention relates to a kind of fatigue tester, relates in particular to a kind of fatigue-testing machine for brake drum.
Background technology is along with continuous development economic and society, requirement to main means of transport-automobile is also more and more higher, equally, serviceable life and security to automobile brake drum are also had higher requirement, therefore, in the serviceable life of the failure mechanism of research automobile brake drum and test brake drum, help to develop the good automobile brake drums of combination property such as high strength, high-wearing feature, high-fire resistance, high antifatigue, no hickie, heat resistanceheat resistant are split, long-life, high security.
Summary of the invention the purpose of this invention is to provide a kind of help the to study failure mechanism of automobile brake drum and the fatigue-testing machine for brake drum in the serviceable life of test brake drum.
For achieving the above object, fatigue-testing machine for brake drum of the present invention, by frame, speed-regulated DC motor, shaft coupling, main shaft, bearing seat, flying wheel, protective cover, mounting flange, clamping device and gear train are formed, an end is provided with speed-regulated DC motor on frame, the output terminal of speed-regulated DC motor is connected with main shaft by shaft coupling, main shaft is connected with frame by bearing seat, on the main shaft between the bearing seat, be provided with flying wheel, the other end of main shaft is connected with brake drum by mounting flange, clamping device is arranged on the other end on the frame by gear train, and the protective cover that flying wheel can be covered on the inside is arranged on the frame.
Clamping device is made up of removable bottom, brake assembly, support, the gentle chamber assembly of brake camshaft, the brake assembly that is arranged in the brake drum is connected with the air chamber assembly by brake camshaft, brake camshaft places the support top by the back-plate on the brake assembly, brake assembly is connected with support by the back-plate on the brake assembly, support be installed in can with removable bottom that the gear train screw mandrel is connected on.
Described frame is processed into convex shape.
After adopting this structure, because the output terminal of speed-regulated DC motor is connected with main shaft by shaft coupling, main shaft is connected with frame by bearing seat, on the main shaft between the bearing seat, be provided with flying wheel, the other end of main shaft is connected with brake drum by mounting flange, clamping device is arranged on the other end on the frame by gear train, thereby help to carry out to the failure mechanism of automobile brake drum and the research in the serviceable life of test brake drum, especially help to develop high strength, high-wearing feature, high-fire resistance, high antifatigue, no hickie, heat resistanceheat resistant is split, long-life, the automobile brake drum that combination properties such as high security are good.
The present invention is described in further detail below in conjunction with drawings and Examples for description of drawings.
Accompanying drawing is that the master of fatigue-testing machine for brake drum of the present invention looks synoptic diagram.
Among the figure: 1. frame 2. speed-regulated DC motors 3. shaft couplings 4. main shafts 5. bearing seats 6. flying wheels 7. protective covers 8. mounting flanges 9. brake drums 10. air chamber assemblies 11. brake camshafts 12. clamping device 13. back-plates 14. supports 15. brake assemblies 16. gear trains 17. removable bottoms.
Fatigue-testing machine for brake drum of the present invention shown in the embodiment accompanying drawing, by frame 1, speed-regulated DC motor 2, shaft coupling 3, main shaft 4, bearing seat 5, flying wheel 6, protective cover 7, mounting flange 8, clamping device 12 and gear train 16 are formed, an end is provided with speed-regulated DC motor 2 on frame 1, the output terminal of speed-regulated DC motor 2 is connected with main shaft 4 by shaft coupling 3, main shaft 4 is connected with frame 1 by bearing seat 5, on the main shaft between the bearing seat 54, be provided with flying wheel 6, the other end of main shaft 4 is connected with brake drum 9 by mounting flange 8, clamping device 12 is arranged on the other end on the frame 1 by gear train 16, and the protective cover 7 that flying wheel 6 can be covered on the inside is arranged on the frame 1; Clamping device 12 is made up of removable bottom 17, brake assembly 15, support 14, brake camshaft 11 gentle chamber assemblies 10, the brake assembly 15 that is arranged in the brake drum 9 is connected with air chamber assembly 10 by brake camshaft 11, brake camshaft 11 places support 14 tops by the back-plate on the brake assembly 15 13, brake assembly 15 is connected with support 14 by the back-plate 13 on the brake assembly 15, support 14 be installed in can with removable bottom 17 that gear train 16 screw mandrels are connected on; Described frame 1 is processed into convex shape.
When the present invention is in running order, earlier brake drum 9 is fixed on the mounting flange 8, by gear train 16 clamping device 12 is moved in the brake drum 9 again, start speed-regulated DC motor 2 then, speed-regulated DC motor 2 drives main shaft 4, flying wheel 6, mounting flange 8 and brake drum 9 rotations by shaft coupling 3, at this moment, as requested brake drum 9 is carried out the test of every group of 20 brakings.