CN1862056A

CN1862056A - Automatic gear for automobile

Info

Publication number: CN1862056A
Application number: CN 200510068034
Authority: CN
Inventors: 范泽林
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-05-09
Filing date: 2005-05-09
Publication date: 2006-11-15

Abstract

A stepless automatic speed-changer for vehicles has a hydraulic and power variable-pitch device, but doesn't have any electronic-controlled sensors. It adopts a machine driven reducing method and uses hydraulic to control stepless automatic variable speed. Its structural principle is that: a power input shaft is forked to several spline shafts opening outwards, on each of which mounted a planet rubber wheel; a conical transmission cylinder is mounted on the intermediate power output shaft; the friction gearing between large and small diameters of the conical transmission cylinder forms reducing on the spline shafts by drawing the several planet rubber wheels, so as to realize the stepless automatic variable-speed.

Description

Automatic gear for automobile

Affiliated technical field: the present invention relates to a kind of automatic gear for automobile device, especially a kind of mechanical reducing CVT (continuously variable transmission).

Background technique: at present, various automatic transmission structure principles used on the known automobile are: hydraulic moment changeable and electric power bending moment combine with mechanical gear transmission step change, the automatic step change transmission of the various sensors of electronic control, structure is very complicated, and the maintenance technique difficulty is very big, and is very inconvenient, cost is very expensive, oil consumption is higher by about 10% than armstrong's patent speed change, the existing minority limousine that only is used for, and motorbus, heavy truck use few.

Summary of the invention: in order to solve present hydraulic step-less moment variator oil consumption height, the speed changing structure complexity, maintenance difficulty is big, the technical matters that involve great expense.

The present invention solves the technological scheme that the mechanical stepless speed changes technology adopted: power input shaft by initiatively, the driven angular wheel conical surface that is branched into conical tube on the many outside open methods of power input shaft and the output shaft becomes equidistant parallel line, solves mechanical reducing technology difficulty problem.Its method is: the power of spline input shaft is given many splined shafts of a plurality of driven angular wheels by initiative taper generating gear equal portions, the driven angular wheel of many splined shafts, bifurcated outwards opens around the angular wheel of driving shaft, form conical space in the middle of the many splined shafts, on conical space spline output shaft, adorn a conical transmission cylinder, respectively adorn a planet rubber wheel on the many splined shafts, every splined shaft is joined the declutch shift shaft of parallel and a splined shaft, stir a plurality of planet rubber wheels with shift fork and between conical transmission cylinder major diameter and minor diameter, come and go reducing, the conical transmission cylinder of common transmission of making a concerted effort is realized mechanical stepless speed changes.

The present invention solves the self-shifting technological scheme: an oil pump is installed on the pto outside housing, an oil inlet pipe, a return tube is connected oil pump and pressure distributor, two on cable control line, every one and shift fork connection respectively up and down, the other end connects pressure distributor twines on the wheel, and a stature is just changeing winding, the counter-rotating of one stature is twined, the pressure distributor principle is: fluid power promotes piston and makes the rack linear advance and retreat, and tooth bar pushes away or draws, transmitting gear and the positive and negative rotation of winding wheel.Pressure distributor is provided with a pressure controlling command valve regulation and control pressure size, adjusts automatic speed changing and limits speed of a motor vehicle driving range, and command valve is introduced operator cabin by the cable control line, and the driver can limit speed of a motor vehicle driving range according to road conditions, selects the location.As normal road conditions, command valve locking normal position, the speed of a motor vehicle can adapt to road conditions automatic speed changing repeatedly at lowest speed and the most at a high speed; Special as road conditions, need to limit suitable vehicle speed range, the driver can be selecting the stepless no gear of handle ground locking desired location; General normal sloping road, hill path need not to limit the speed of a motor vehicle.Stepless change and automatic speed changing component than existing automatic transmission lack a lot, structure is very simple, the component long service life only is provided with the gear that advances, a reverse gear position, driver's operation is very convenient.

The invention has the beneficial effects as follows: component are few, and reducing only adopts the transmission between a conical transmission cylinder major diameter and minor diameter of several rubber wheels just to realize stepless change, and structure is very simple, and is cheap, and the use maintenance is very convenient, oil consumption is low.

Description of drawings: the present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is that the present invention faces, a left side is looked, the right side is looked, backsight profile construction schematic representation.

Fig. 2 is that CVT (continuously variable transmission) is overlooked splined shaft, declutch shift shaft distribution schematic diagram.

Fig. 3 is the automatic handle structure principle schematic of CVT (continuously variable transmission).

Among the figure: 1. spline output shaft; 2. bonnet; 3. planet rubber wheel; 4. splined shaft; 5. cone shell; 6. bearing; 7. driven taper transmission shaft; 8. protecgulum; 9. assembling screw hole; 10. thrust-bearing; 11. pressure spring; 12. screw; 13. conical transmission cylinder; 14. bearing; 15. screw; 16. initiative taper generating gear; 17. input shaft; 18. declutch shift shaft; 19. pulley; 20. cable control line; 21. shift fork; 22. control wire twines wheel; 23. hydraulic fluid distributor; 24. regulation and control command valve; 25. tooth bar; 26. gear; 27. oil pump; 28. oil inlet pipe; 29. return tube; 30. command valve cable control line.

Embodiment: in Fig. 1, path place installation input shaft (17) is joined circular cone driving gear (16) in the middle of the cone shell (5), and spline output shaft (1) is installed at place, big footpath, combines with conical transmission cylinder (13) by spline.Equal portions 3 splined shafts of installation (4) are joined driven angular wheel (7) around in the cone shell (5), outwards open on every side at initiative taper generating gear (16), form bifurcated.Input shaft (16) power is passed to 3 splined shafts (4) respectively, 3 splined shafts are respectively installed a planet rubber wheel (3), 3 declutch shift shafts (18) are installed on 3 splined shafts (4) limit, load onto shift fork (21) (seeing Fig. 2, Fig. 3), initiative taper generating gear (16) is passed to the power equalization respectively on 3 splined shafts (4), 3 planet rubber wheels (3) pressure springs (11) are pressed on the conical transmission cylinder (13) of the common with joint efforts again friction transmission of planet rubber wheel (3) to conical transmission cylinder, in order to prevent to skid, go up the processing anti-slip tank at conical transmission cylinder (13).

In Fig. 3, hydraulic-pressure pump (27) is installed on cone shell (5) the external splines output shaft (1), and oil inlet pipe (28) return tube (29) is communicated with hydraulic-pressure pump (27) and pressure distributor (23).(20) two on cable control line twines wheel (22) with shift fork (21), control wire respectively and is connected, and one just twines, anti-a winding.Tooth bar (25) driving gear (26) makes control wire twine wheel (22) positive and negative rotation, between circular cone transmission cylinder (13) major diameter and minor diameter, come and go the reducing transmission by cable control line (20) shift fork (21) pulling planet friction wheel (23), form the stepless automatic transmission principle.Regulation and control command valves (24) are installed in the middle of oil inlet pipe (28) return tube (29), and effect is the regulation and control recirculating oil quantities, and recirculating oil quantity is many, and pressure distributor (23) pressure reduces, and the speed of a motor vehicle reduces, on the contrary the pressure increase, and the speed of a motor vehicle is accelerated.Cable control line (30) is introduced operator cabin, and the driver manually controls, locks special road conditions and limits vehicle speed range.

Claims

1, a kind of automatic gear for automobile is made up of case of transmission, conical transmission cylinder, planet rubber wheel, pressure spring, input shaft, output shaft, splined shaft, oil pump, pressure distributor, cable control line.It is characterized in that: power input shaft by initiatively, the driven angular wheel conical surface that is branched into conical tube on the many outside open methods of power input shaft and the output shaft becomes equidistant parallel line.

2, automatic gear for automobile according to claim 1 is characterized in that: the cable control line twines on the wheel at pressure distributor, and one is just to twine, and one is anti-winding.