CN2158468Y - Rolling type bevel gear stepless speed changer - Google Patents

Abstract

A rolling type bevel gear stepless speed changer mainly comprises two rolling type clutches, a group of bevel gear speed decomposers, a group of bevel gear speed synthesizers, two rolling type brakes and a pressure supply system; the gear stepless speed changer is a full-meshing friction-free clutch, has simple structure, convenient operation, easy maintenance and low cost, and has the same price with the speed changer of a common synchronizer.

Description

Conical gear step-less gearbox

The utility model relates to the gear run stepless speed changer of a kind of heavy machinery, particularly automobile.

At present, known automobile stepless speed variator, automatic transmission as 36257E imperial crown (CROWN), 6136E Toyota-F(MODEL-F), 264E land cruiser cars such as (LAND CRUISER), be the product that fluid power speed change and mechanical speed change combine, mostly the mechanical speed change part directly shifted gears with friction clutch; Generally will use 2 to 4 groups of friction clutches, the dust pollution that friction plate causes is also greater than general synchronizer speed changer, and output power is also not as good as the synchronizer speed changer; A kind of (patent No. is 92200485.4) bevel gear air cushion automatic stepless speed change mechanism was disclosed in 1992; Though it has avoided the pollution of friction plate, because it contains four star wheel series mechanisms and four oil pumps, and often is in the operating condition of full engagement, its power consumption also can not be ignored.Task of the present utility model is the deficiency according to above-mentioned existing procucts, design a kind of simple in structure, easy to operate, cost is low, the automobile stepless speed variator of easy-maintaining.

Following design proposal of the present utility model realizes task set forth above:

A kind of roll squeezing type bevel gear stepless speed variator (hereinafter to be referred as speed changer) it mainly by two roll squeezing type clutches (hereinafter to be referred as clutch), one group of bevel gear speed resolver (hereinafter to be referred as transfer case), one group of bevel gear speed synthesizer (hereinafter to be referred as synthesizer) and two roll squeezing type breaks (hereinafter to be referred as break) and voltage supply system form, it is characterized in that: input shaft (1) is by respectively that positive and negative two kinds of moments of torsion are the single input shaft of passing to transfer case (33) of two clutches, star wheel frame (39) by transfer case and star-wheel (38) are paid (44) (15) and low speed gear is paid ((36) with torque distribution to high gear again, (25), star-wheel (18) by synthesizer and star wheel frame (20) are from output shaft (27) output torque again, and two breaks are controlled the speed end of transfer case and the output quantity of low speed end respectively.

The utility model will be further described below in conjunction with accompanying drawing:

Explanation to each member label in the accompanying drawing:

(1)---input shaft, Engine torque is imported speed changer.

(2)---input shaft (1) left end angular contact ball bearing.

(3)---with fixing forward gears reduction gear first gear that connects connection of input shaft (1).

(4)---input shaft (1) right-hand member angular contact ball bearing.

(5)---the eccentric wheel in clutch and the break.

(6)---the rolling element of the plunger bottom in clutch and the break cylinder body.

(7)---the plunger in clutch and the break cylinder body.

(8)---the cylinder body of radial equipartition on clutch wheel in clutch and the break and the brake disc.

(9)---the clutch wheel in the clutch.

(10)---the fixing transmission shaft of clutch wheel.

(11)---the double-row roller bearing of supporting reverse gear clutch wheel transmission shaft.

(12)---be fixed on first gear that the reverse gear reduction gear on the clutch wheel transmission shaft is paid.

(13)---with the voltage supply conduit of clutch shaft central duct sliding fit, its other end is fixed on the case of transmission.

(14)---output shaft (27) left end angular contact ball bearing.

(15)---the high speed wheel of fixedlying connected with the synthesizer left side wheel is paid second gear.

(16)---needle bearing.

(17)---the synthesizer left side wheel.

(18)---star-wheel.

(19)---the steel ball of supporting star-wheel sliding fit.

(20)---star wheel frame.

(21)---fastening screw trip bolt.

(22)---with the packing ring of star-wheel sliding fit.

(23)---the synthesizer right-hand wheel.

(25)---the low speed gear of fixedlying connected with the synthesizer right-hand wheel is paid second gear.

(26)---output shaft (27) right-hand member angular contact ball bearing.

(27)---the synthesizer output shaft.

(28)---the brake disc in the break, its outer ring and case of transmission interference fit.

(32)---transfer case input shaft (33) right-hand member angular contact ball bearing.

(33)---the transfer case input shaft.

(36)---pay first gear with the low speed gear that transfer case right-hand wheel (37) is fixedlyed connected.

(37)---the transfer case right-hand wheel.

(42)---the transfer case left side wheel.

(44)---pay first gear with the high gear that transfer case left side wheel (42) is fixedlyed connected.

(50)---transfer case input shaft left end angular contact ball bearing.

(56)---the double-row roller bearing of supporting forward gears clutch wheel transmission shaft (10).

(57)---forward gears clutch wheel transmission shaft (10) left end roller bearing.

(59)---clutch wheel transmission shaft (10) the left end roller bearing of forward gear.

(61)---the reverse gear reduction gear is paid second gear.

(62)---the reverse gear reduction gear is paid the 3rd gear.

(63)---the minor axis of fixedlying connected with gear (61).

(64)---minor axis (63) left end double-row roller bearing.

(65)---transfer case input shaft (33) left end angular contact ball bearing.

(29)---two-position four-way valve.

(31)---safety valve.

(34)---pressure gauge.

(46)---the tubular type accumulator.

(47)---pressure oil tank.

(48)---oil hydraulic pump.

(49)---fuel tank.

(52)---air compressor.

(53)---gas tank.

(54)---oil purifier.

(55)---air-strainer.

(51)---reflux line.

(45)---air vent.

The explanation of Figure of description drawing:

Accompanying drawing 1 is a speed changer structure principle cross-sectional schematic.

Accompanying drawing 2(a) be clutch end face sectional view, the left side is single eccentric wheel, and the right side is a double eccentric wheel.

Accompanying drawing 2(b) be the break cross-sectional end view, the left side is single eccentric wheel, and the right side is a double eccentric wheel.

Accompanying drawing 2(c) is hydraulic pressure voltage supply system schematic.

Accompanying drawing 2(d) is air pressure voltage supply system schematic.

A1-A2, B1-B2, C1-C2, D1-D2 are the pipe interface signal mark of clutch and break in voltage supply system and the speed changer.

According to quiet, the dynamic relationship between each each member of member label declaration:

1, the explanation of neutral gear, forward gears, reverse gear function: speed changer is by two identical two-position four-way valve operations, two clutches of a control, two breaks of a control; When control valve (29) when mediating, A1-A2 and B1-B2 be delivery pressure not, and plunger and rolling element do not produce pressure to eccentric wheel, and speed changer is in neutral state; When control valve (29) when moving right A1-A2 open voltage supply; Plunger (7) and rolling element (6) produce pressure to eccentric wheel, and when pressure acquired a certain degree, plunger (7) and rolling element (6) can not resiliences, and clutch wheel (9) promptly drives the eccentric wheel rotation, to transfer case input shaft (33) transmitting torque; When control valve (29) during to left translation, A1-A2 closes B1-B2 immediately and opens voltage supply, plunger (7) and rolling element (6) produce pressure to eccentric wheel (5), when pressure rises to a certain degree, plunger (7) and rolling element (6) can not resiliences, eccentric wheel (5) drives clutch wheel (9) immediately and rotates, and pays (12), (61), (62) to transfer case input shaft (33) transmitting torque by the reverse gear reduction gear.

2, the explanation of stepless shift function: when control valve (29) when mediating, C1-C2 and D1-D2 be delivery pressure not, and this moment, transfer case and synthesizer were in free speed change state; Selected three kinds of operating modes below this are illustrated its variation: (A) vehicle is in starting state---and the reaction torque that back axle produces arrives gear (15) and gear (25) by synthesizer output shaft (29) star wheel frame (20), star-wheel (18), side wheel (17), (23) with torque distribution, because the counter moment of reaction of doing moment greater than the low speed end of speed end, this moment, transfer case was from low speed end output torque; (B) when the moment of inertia of vehicle makes the standard pitch circle linear velocity of gear pair (25), (36) surpass engine level limit revolution to make the linear velocity that gear pair (25), (36) standard pitch circle reach, transfer case begins from the speed end output torque, but it is too high that the speed end gear is paid the standard pitch circle linear velocity of (44), (15), and the revolution of only reliable star-wheel (18) torque distribution that it is unnecessary makes it quicken the gap of balance two ends standard pitch circle linear velocity to the low speed end; (C) speed of a motor vehicle maintains an equal level with engine speed substantially, and this moment, Engine torque was exported from speed end fully.The free speed change state of this kind only could be carried out when the good no obvious gradient of road conditions smoothly; Otherwise because vehicle can not be given full play to its effect of inertia, it quickens to change very slow; Braking to the low speed end is exactly to force motor from the speed end output torque, makes vehicle obtain desirable speed of operation at short notice; To the braking of speed end, rely on running up of motor to make the vehicle idling descending when generally being used in the vehicle descending; When braking simultaneously, high low speed two ends are the Parking shelves of vehicle.

Below in conjunction with accompanying drawing detailed rules for the implementation are described:

Model machine is pressed light car design, and design power is 50-80 kilowatt, and full accuracy is no more than 6 grades, minimumly is not less than 8 grades, and general Light-duty Vehicle should adopt the air pressure voltage supply, and its advantage is no pipeline loop, no accumulator, safety; Shortcoming is that design pressure can not surpass 1 MPa, must increase diameter of cylinder; General heavy goods vehicles should adopt the hydraulic pressure voltage supply, because of its pressure height, cylinder body can be narrowed down to bottom line.The air pressure voltage supply should adopt double eccentric wheel, to reduce its tangential reaction force, corresponding diameter of cylinder is reduced.

The utility model has the advantages that simple in structurely, easy and simple to handle, cost is low, the output power height, and price maintains an equal level with general synchronizer speed changer.

Claims (10)

1, a kind of roll squeezing type is bored out wheel stepless speed variator (hereinafter to be referred as speed changer), it is mainly by two roll squeezing type clutches (hereinafter to be referred as clutch), one group of bevel gear speed resolver (hereinafter to be referred as transfer case), one group of bevel gear speed synthesizer (hereinafter to be referred as synthesizer) and two roll squeezing type brakings (hereinafter to be referred as break), and the voltage supply system forms, it is characterized in that: input shaft (1) is by respectively that positive and negative two kinds of moments of torsion are the single input shaft of passing to transfer case (33) of two clutches, star wheel frame (39) by transfer case and star-wheel (38) are paid (44) (15) and low speed gear is paid (36) with torque distribution to high gear again, (25), again by star-wheel (18) in the synthesizer and star wheel frame (20) from output shaft (27) output torque, two breaks are controlled the speed end of transfer case and the output quantity of low speed end respectively.

2, form by eccentric wheel (5) rolling element (6), plunger (7) cylinder body (8), clutch wheel (9) clutch wheel transmission shaft (10), voltage supply conduit (13) according to the clutch in the described speed changer of claim 1., eccentric wheel (5) is contained in the reverse clutch that is of input shaft (1) Zuo Weiduan, wherein clutch wheel (9) is a driven member, eccentric wheel (5) is a driving link, eccentric wheel (5) is contained in the forward gear clutch that is of transfer case input shaft (33) Zuo Weiduan, wherein eccentric wheel (5) is a driven member, and clutch wheel is a driving link; Voltage supply conduit (13) one ends insert the center hole of clutch wheel transmission shafts (10), by the center hole sliding fit of seal ring and clutch wheel transmission shaft (10), and communicate with cylinder body (8) by the pipeline on the clutch wheel; The other end of voltage supply conduit (13) is fixed on the case of transmission.

3, form by eccentric wheel (5) rolling element (6), plunger (7), cylinder body (8), brake disc (28) according to the break in the described speed changer of claim 1., wherein brake disc is fixed on the case of transmission, directly be connected with D1 with the pressure output end C1 of voltage supply system with the D2 end by conduit C2, eccentric wheel (5) is fixedlyed connected with low speed gear (36) with high gear (44) respectively.

4, according to the transfer case in the described speed changer of claim 1. by input shaft (33), star-wheel (38), star wheel frame (39).Side wheel (37) and (42), low speed gear (36) high gear (44) are formed; Wherein star wheel frame is fixedlyed connected with input shaft (33), fixedly connected with high gear (44), low speed gear (37) respectively in side wheel (42), (37), star-wheel (38) and star wheel frame (39) sliding fit, and often mesh with side wheel (43) and side wheel (37) respectively.

5, be made up of output shaft (27) star wheel frame (20), star-wheel (18), side wheel (18) and (23), high gear (15), low speed gear (25) according to the synthesizer in the described speed changer of claim 1., wherein side wheel (18) is fixedlyed connected with low speed gear (25) with high gear (15) respectively with (23); Star-wheel (18) and star wheel frame (20) sliding fit, and often mesh with side wheel (18) and (23) respectively.

6, the voltage supply system according to the described speed changer of claim 1. can be hydraulic pressure voltage supply or air pressure voltage supply; Wherein hydraulic pressure voltage supply system is made up of fuel tank (49), oil purifier (54), pressure oil pump (48), pressure oil tank (47), pressure gauge (34), safety valve (31), more than one tubular type accumulator (46), two two-position four-way valves (29); Air pressure voltage supply system is made up of air-strainer (55), air compressor (52), gas tank (53), safety valve (31), pressure gauge (34), two two-position four-way valves (29).

7, can tortuously be arbitrary geometrical shape according to the tubular type accumulator in the described hydraulic system of claim 6., can be the nonmetallic material of metallic material or withstand voltage oil resistant; Wherein the tubular type accumulator of nonmetallic material or the metal liner non-metallic layer tubular type accumulator that is lined with withstand voltage oil resistant can be made the oil gas separator piston with mercury.

8, be positioned at the lower end and the sliding fit with it of plunger (7) according to rolling element (6) in described clutch of claim 2.3. and the break; Described rolling element (6) can be steel ball, roller or roller.

9, according to the forward gears in the described speed changer of claim 1. is to pass through gear pair (3) by input shaft (1) along order, (57), clutch wheel transmission shaft (10), clutch wheel (9), plunger (7), rolling element (6), eccentric wheel (5), being passed to its middle gear of transfer case input shaft (33) (3) fixedlys connected with input shaft (1), gear (57) is fixedlyed connected with clutch wheel transmission shaft (10), reverse gear is to pass through eccentric wheel (5) by input shaft (1) along order, rolling element (6), plunger (7), clutch wheel (9), clutch wheel transmission shaft (10), gear pair (12), (61), (62) be passed to transfer case input shaft (33), its middle gear (62) is fixedlyed connected with transfer case input shaft (33), and gear (12) is fixedlyed connected with clutch wheel transmission shaft 10.

10, in the clutch wheel (9) according to the described clutch of claim 2.3., its radial equipartition has cylinder body, plunger and the rolling element more than at least four in the brake disc of break (28).

Images