Differential lock and differential testing device
View Patent ↗Differential and differential lock test device is capable of testing every kind of tractors on tractor assembly line. This device tests the performance and noise level of tractors' both differential and its lock.
1. A differential lock and a differential testing device for testing tractors comprising: a) a main two-way pneumatic jack; b) a main electromotor; c) pedal lock pneumatic jack; d) brake jack; e) tachometers; f) brake drum; g) electro-gearbox; h) brake transverse adjustment handle; i) brake longitudinal adjustment rails; j) brake transverse adjustment rails; k) brake pads; l) steering house; m) axles; n) air compressor, providing air flow required for performance of said pneumatic jacks; o) support of said main electromotor, which remains motionless and fixed to ground during test process; p) main electromotor rail; q) longitudinal adjustment screw; r) brake transverse adjustment screw; s) main chassis.
2. A differential lock and a differential testing device for testing tractors of claim 1 ; wherein said two-way pneumatic jack displaces said main electromotor along said main electromotor rail and from one end is connected to an electromotor base and from one end to said main chassis; during testing said axles are mounted on said device and said two-way pneumatic jack will drive said main electromotor forward on said main electromotor rail where said main electromotor will be engaged with a shaft of said axles; when said testing is complete said main electromotor is driven back to its original state before engagement and will be disengaged from said shaft.
3. A differential lock and a differential testing device for testing tractors of claim 2 ; wherein said main electromotor provides enough power during said testing and is moved back and forth along said main electromotor rail; said main electromotor uses three phase power testing differential and differential locks.
4. A differential lock and a differential testing device for testing tractors of claim 3 ; wherein said pedal lock pneumatic jack engages with a differential lock pedal, where said pedal lock pneumatic jack is attached to a stand through support of said main electromotor and wherein it engages with said differential lock pedal when stretched and disengages when returned to its initial state.
5. A differential lock and a differential testing device for testing tractors of claim 4 ; wherein said axles comprise two of said brake jacks; wherein said brake jacks impose force on said brake pads; said force is transferred to said axles by said brake drum and works against a rotation of said axles; however it never fully stops said axles.
6. A differential lock and a differential testing device for testing tractors of claim 5 ; wherein said force varies in different test conditions; wherein in said testing a differential in straight paths, an equal amount of said force is applied to said axles and uneven amount of said forces are applied while testing said differential lock according to different test types and conditions; wherein said uneven amount of said force is applied by steering dividers mounted on said steering housing.
7. A differential lock and a differential testing device for testing tractors of claim 6 ; wherein said tachometer is installed on said axles and measures PRM of said axles during said testing and sends data received to a programming and analyzing unit inside said steering housing for further analysis and wherein said tachometers are attached to brakes of said main chassis of a tachometer support.
8. A differential lock and a differential testing device for testing tractors of claim 7 ; wherein said brake drum is mounted on said axles during said testing and delivers said force imposed by said brake jacks on said axles; wherein said brake drum is stretched by said electro-gearbox longitudinally.
9. A differential lock and a differential testing device for testing tractors of claim 8 ; wherein said brake transverse adjustment handle; adjusts said brake drum in a transverse direction and aligns it with wheels of said tractor's.
10. A differential lock and a differential testing device for testing tractors of claim 9 ; wherein said brake longitudinal adjustment rails are attached to said electro-gearbox through power bolts.
11. A differential lock and a differential testing device for testing tractors of claim 10 ; wherein said brake transverse adjustment rails conducts said brake drums during a crosswise alignment and it facilitates movement of said brake drums collection in a transverse direction.
12. A differential lock and a differential testing device for testing tractors of claim 11 ; wherein said brake pads are placed on said brake drums, preventing said axles from rotation when receiving said force from two-way pneumatic jacks, and wherein said brake pads are connected to said brake jacks; wherein a rotation of said axles are resisted due to a high friction coefficient between said brake pads and a surface of said brake drums.
13. A differential lock and a differential testing device for testing tractors of claim 12 ; wherein said steering housing is fixed to ground through a support of said steering housing, where it steers said two-way pneumatic jacks and comprises said programming and analyzing unit, pneumatic steering dividers, a display unit connected to said programming and analyzing unit displaying results to an operator of said tractors.
14. A differential lock and a differential testing device for testing tractors of claim 13 ; wherein said longitudinal adjustment screw is connected to an output of said electro-gearbox at one end and to said main chassis brakes at another end, and drives said brake drums longitudinally, and when said electro-gearbox rotates, said longitudinal adjustment screw attaches and detaches said brake drums to said axles.
15. A differential lock and a differential testing device for testing tractors of claim 14 ; wherein said brake transverse adjustment screw aligns said brake drums across a transverse direction and moves said brake drums along said brake transverse adjustment rail and aligns said brake drums with said axles.
16. A differential lock and a differential testing device for testing tractors of claim 15 ; wherein said main chassis holds said main electromotor and said main electromotor support and said main electromotor rail.
17. A differential lock and a differential testing device for testing tractors of claim 16 ; wherein said pneumatic steering dividers for said pedal lock pneumatic jack is on said steering housing.
18. A differential lock and a differential testing device for testing tractors of claim 17 ; wherein said device works with all kinds of tractors.
19. A differential lock and a differential testing device for testing tractors of claim 18 ; wherein said tractors are tested on an assembly line inside a factory and wherein said testing is more accurate than a field test and wherein said testing is used in industrial and research centers.
20. A differential lock and a differential testing device for testing tractors of claim 19 ; wherein said testing ensures safety of said differential and said differential lock and enhances product quality of tractor manufacturers.