CN207470711U

CN207470711U - Symmetrical double belt large torque stepless speed changer

Info

Publication number: CN207470711U
Application number: CN201720959064.3U
Authority: CN
Inventors: 魏敬丰
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-07-27
Filing date: 2017-07-27
Publication date: 2018-06-08
Anticipated expiration: 2027-07-27

Abstract

The symmetrical double belt large torque stepless speed changer employs symmetrical design, so that plus-pressure is symmetrical, symmetrical configuration, conditioning unit ensure that it is each cone disk simultaneously wait compare be driven, it ensure that and obtain double pressure in the case of not increasing bindiny mechanism and housing bearing capacity, each chain can be allowed to work less than extremum conditions under conditions of large torque output, extend chain service life；To having used hydrostatic compression system during cone disk pressurization, make hydraulic oil pol loss almost nil, so not needing to specially provide hydraulic oil supply；The speed changer process is without electric ＆ hydraulic control system reliability height, and the centrifugal-block for being responsible for no-load voltage ratio information feedback simultaneously is mounted on output shaft, therefore speed changer can automatically fine and smooth perception vehicle to the needs of torque and speed, timely no-load voltage ratio is carried out, meets the manual operation process of manual transmission；The transmission design is reasonable, compact-sized, whole to use mechanical structure without electronic control system, easy to maintenance.

Description

Symmetrical double belt large torque stepless speed changer

Technical field

The utility model is related to a kind of symmetrical double belt large torque stepless speed changers, belong to control system for automobile technology neck Domain.

Background technology

Speed changer is one of the ost important components in automobile-used transmission system, can realize change gearratio, expands driving rotation The variation range of square and rotating speed to adapt to the driving conditions often changed, while makes engine higher in advantageous power and oil consumption It works under relatively low operating mode.

At present, CVT (Continuously Variable Transmission) technology, that is, Variable Speed Technology, it is used Transmission belt and the variable driven wheel of working diameter match and carry out passing power, can realize the continuous change of gearratio, so as to Obtain the best match of power train and engine operating condition.But it also has the shortcomings that intrinsic i.e.：High torque cannot be transmitted, though Torque increases after so now passing through material improvement, but is still unable to reach the preferable output of large torque, since CVT speed changers are consolidated Some structures and no-load voltage ratio motion mode determine that it will necessarily reach the transmission upper limit of torque, i.e.,：It increases chain and cone disk is direct Frictional force can increase driving torque, but simultaneously because frictional force increasing again limits the no-load voltage ratio movement of driving chain radial direction, So that changing the difficulty that gearratio becomes, if wanting, increasing its driving torque only has increasing cone disk and chain size and control force Degree, so far, the design bottleneck of self structure prevents its torque from continuing to increase as needed, therefore also limits its use model It encloses.

Utility model content

The purpose of this utility model is to solve the above-mentioned problems and provides a kind of symmetrical stepless change of double belt large torque Fast device；The speed changer employs symmetrical design so that plus-pressure is symmetrical, symmetrical configuration, and conditioning unit ensure that each cone disk is same When etc. than transmission, ensure that and double pressure is obtained in the case of not increasing bindiny mechanism and housing bearing capacity, large torque export Under conditions of each chain can be allowed to work less than extremum conditions, extend chain service life, and identical parts mostly convenient for plus Work and volume production；Moreover, to having used hydrostatic compression system during cone disk pressurization, make hydraulic oil pol loss almost nil, so It does not need to specially provide hydraulic oil supply；The speed changer process is born simultaneously without electric ＆ hydraulic control system reliability height The centrifugal-block for blaming no-load voltage ratio information feedback is mounted on output shaft, thus speed changer can automatically fine and smooth perception vehicle to torque with The needs of speed carry out timely no-load voltage ratio, comply fully with the manual operation process of manual transmission；In addition, the transmission design Rationally, it is compact-sized, it is whole using mechanical structure without electronic control system, it is easy to maintenance, be suitble on a plurality of types of vehicles It uses, the scope of application is wider.

In order to achieve the above object, the utility model is realized by following technological means.

A kind of symmetrical double belt large torque stepless speed changer, it is by the first cone disk, equidistant coordinator, the second cone disk, third Bore disk, quiet press cylinder, gearbox, the 4th cone disk, the 5th cone disk, the 6th cone disk, forcing elastic part, leading screw, the 7th cone disk, 8th cone disk, the 9th cone disk, loading bearing, pressing arm, pressure bearing, the tenth cone disk, position-limiting cover, guide groove, pivot pin, pressure plunger Cylinder, centrifugal-block, portion of chain composition, it is characterized in that：Lower housing upper end is provided with upper shell, and lower housing both sides are respectively arranged with two A bearing groove, bearing groove are provided with loading bearing, and guide groove is provided between bearing groove, and output shaft, input are provided in lower housing Axis；Input shaft one end sequentially pass through loading bearing, pressure bearing, the tenth cone disk, first cone disk, equidistant coordinator, second cone disk, Third cone disk, pressure bearing are fixed in loading bearing, and the input shaft other end is connected with engine；First cone disk passes through equidistant Coordinator second bores disk and is connected, and sliding block, gear, gear shaft, rack are provided in equidistant coordinator, into three groups of axial symmetry point Cloth, sliding block are bored disk and are connected with the tenth cone disk, third respectively by six roots of sensation leading screw；Tenth cone disk, first cone disk by chain with 7th cone disk, the 8th cone disk are connected, and the second cone disk, third cone disk are connected by chain with the 5th cone disk, the 6th cone disk.

Described output shaft one end is fixed in loading bearing, the output shaft other end sequentially pass through position-limiting cover, pressure bearing, 9th cone disk, the 8th cone disk, the 7th cone disk, forcing elastic part, the 6th cone disk, the 5th cone disk, the 4th cone disk, pressure bearing, limit Position cover, loading bearing are connected with gearbox, are set between the 9th cone disk and the 8th cone disk, between the 4th cone disk and the 5th cone disk There are 12 pieces of centrifugal-blocks, the 9th cone disk is connected by six roots of sensation leading screw with the 6th cone disk, and the 4th, which bores disk, passes through six roots of sensation leading screw and the Seven cone disks are connected, and leading screw is staggeredly arranged around output shaft periphery, and the 6th cone disk passes through forcing elastic part and the 7th cone disk phase Connection, pressure bearing are connected by contact block with pressing arm.

The pressing arm is fixed on by pivot pin in guide groove, and quiet press cylinder is fixed by link and pivot pin to be connected It connects, quiet press cylinder is connected by conduit with pressured column plug tube, and pressured column plug tube is fixed by the bracket in quiet pressurized hydraulic On cylinder.

It is to fix disk that described first, which bores disk, the second cone disk, the 8th cone disk, the 5th cone disk, passes through spline structure and axis connects It connects, and passes through both ends snap ring and be stuck on input shaft.

Described the tenth bores disk, the first cone disk, the second cone disk, third cone disk and is connected by spline structure with input shaft, 4th cone disk, the 5th cone disk, the 6th cone disk, the 7th cone disk, the 8th cone disk, the 9th cone disk are connected by spline structure with output shaft It connects.

Various assemblies on the input shaft are symmetrical arranged centered on equidistant coordinator, the various assemblies on output shaft It is symmetrical arranged centered on forcing elastic part.

Operation principle：After input shaft input power, centrifugal-block speed is small under engine idle conditions, and centrifugal-block Also small away from axis radius, the centrifugal force of generation is also small, so the 4th cone disk, the 9th cone disk are hindered by the forcing elastic part of output shaft at this time Only, large torque low speed output is kept, centrifugal-block centrifugal force is increased when engine accelerates, and the 9th cone disk drives the 6th to bore disk in Between move, the 4th cone disk drive the 7th cone disk also to intermediary movements and compress prevent forcing elastic part, due to hydrostatic pressuring machine Structure is under equilibrium state the cone disk pressure on input shaft and output shaft, centrifugal-block generate motive force break pressing arm for Tenth cone disk and third cone disk, the pressure balance of the 6th cone disk and the 7th cone disk, and since chain length is constant, so centrifugal-block The 4th cone disk, the 9th cone disk movement can easily be made, due to the 5th cone disk, the 6th cone disk, the 7th cone disk, the 8th cone disk spacing Become larger, therefore the first cone disk and the tenth cone disk, the spacing of the second cone disk and third cone disk becomes smaller under stress with speed, transmission chain connect Tactile diameter becomes larger, and gearratio becomes larger, and since speed is bigger, the pressure that centrifugal-block generates is bigger, and pressure is bigger, and gearratio variation is got over Greatly, maximum transmission ratio can so be reached rapidly.

The utility model mainly has the advantages that：

1st, the speed changer employs symmetrical design so that plus-pressure is symmetrical, symmetrical configuration, and conditioning unit ensure that each cone Disk is waited than transmission simultaneously, ensure that and double pressure is obtained in the case of not increasing bindiny mechanism and housing bearing capacity, in large torque Each chain can be allowed to work less than extremum conditions under conditions of output, extend chain service life, and identical parts are mostly just In processing and volume production.

2nd, to having used hydrostatic compression system during cone disk pressurization, make hydraulic oil pol loss almost nil, so being not required to Hydraulic oil supply to be specially provided.

3rd, the transmission design is reasonable, compact-sized, and entirety uses mechanical structure, easy to maintenance, is suitble in multiple types Vehicle on use, the scope of application is wider.

4th, the speed changer process is without electric ＆ hydraulic control system reliability height, and is responsible for no-load voltage ratio information feedback simultaneously Centrifugal-block is mounted on output shaft, therefore speed changer automatically fine and smooth can perceive needs of the vehicle to torque and speed, progress Timely no-load voltage ratio complies fully with the manual operation process of manual transmission.

5th, the transmission design is reasonable, compact-sized, is suitble to use on a plurality of types of vehicles, and the scope of application is wider, It is whole to use mechanical structure without electronic control system, it is easy to maintenance.

Description of the drawings

Attached drawing 1 is the dimensional structure diagram of the symmetrical double belt large torque stepless speed changer of the utility model.

Attached drawing 2 is the equidistant coordinator of the symmetrical double belt large torque stepless speed changer of the utility model and cone disk connection structure Schematic diagram.

Attached drawing 3 is the equidistant coordinator internal structure signal of the symmetrical double belt large torque stepless speed changer of the utility model Figure.

Attached drawing 4 is the quiet press cylinder scheme of installation of the symmetrical double belt large torque stepless speed changer of the utility model.

Attached drawing 5 is the centrifugal-block scheme of installation of the symmetrical double belt large torque stepless speed changer of the utility model.

As Figure 1-Figure 5, various pieces are represented by following Arabic numerals in figure：

Lower housing -1, the first cone disk -2, equidistant coordinator -3, the second cone disk -4, third cone disk -5, quiet press cylinder - 6th, gearbox -7, the 4th cone disk -8, the 5th cone disk -9, the 6th cone disk -10, forcing elastic part -11, leading screw -12, the 7th cone disk - 13rd, the 8th cone disk -14, the 9th cone disk -15, loading bearing -16, output shaft -17, pressing arm -18, input shaft -19, pressure axis It holds the -20, the tenth cone disk -21, position-limiting cover -22, sliding block -23, gear -24, guide groove -25, pivot pin -26, pressured column plug tube -27, connect Connect frame -28, centrifugal-block -29, chain -30.

With reference to embodiment and Figure of description, the utility model is described in further detail：

Specific embodiment

Embodiment

As Figure 1-Figure 5, a kind of symmetrical double belt large torque stepless speed changer, it is by the first cone disk 2, equidistant coordinator 3rd, the second cone disk 4, third cone disk 5, quiet press cylinder 6, drive shift, the gearbox 7 that reverses gear, the 4th cone disk 8, the 5th cone disk 9, the Six cone disks 10, forcing elastic part 11, leading screw the 12, the 7th bore disk the 13, the 8th and bore the cone of disk the 14, the 9th disk 15, loading bearing 16, pressurization Arm 18, pressure bearing the 20, the tenth bore disk 21, position-limiting cover 22, guide groove 25, pivot pin 26, pressured column plug tube 27, centrifugal-block 29, chain 30 parts form.

As Figure 1-Figure 5,1 upper end of lower housing is provided with upper shell, and 1 both sides of lower housing are respectively arranged with two bearings Slot, bearing groove are provided with loading bearing 16, and guide groove 25 is provided between bearing groove, and output shaft 17, input are provided in lower housing 1 Axis 19；19 one end of input shaft sequentially passes through loading bearing 16, pressure bearing the 20, the tenth bores disk 21, first and bores disk 2, equidistant coordination Device 3, second is bored disk 4, third cone disk 5, pressure bearing 20 and is fixed in loading bearing 16,19 other end of input shaft and engine phase Connection；First cone disk 2 bores disk 4 by equidistant coordinator 3 second and is connected, and sliding block 23, gear are provided in equidistant coordinator 3 24th, gear shaft, rack are distributed into three groups of axial symmetry, and sliding block 23 bores disk with the tenth cone disk 21, third respectively by six roots of sensation leading screw 12 5 are connected, to ensure that the tenth cone disk 21, third are bored disk 5 and be axially moved on axis in a manner of equidistant, meanwhile, equidistant coordinator 3 An independent assembly for having a annular outer cover, be inserted in after input shaft 19 by the first cone disk 2, second bore disk 4 clamp be fixed on it is defeated Enter on axis 19.

The tenth cone disk 21, first bores disk 2 and is connected by chain 30 with the 7th cone cone disk 14 of disk the 13, the 8th, the Plug tap disk 4, third cone disk 5 bore disk 10 with the 5th cone disk the 9, the 6th by chain 30 and are connected.

Described 17 one end of output shaft is fixed in loading bearing 16,17 other end of output shaft sequentially pass through position-limiting cover 22, Pressure bearing the 20, the 9th bores disk the 15, the 8th and bores the cone of disk the 14, the 7th disk 13, the cone cone disk of disk the 10, the 5th of forcing elastic part the 11, the 6th 9th, the 4th cone disk 8, pressure bearing 20, position-limiting cover 22, loading bearing 16 are connected with gearbox 7, and the 9th cone disk 15 and the 8th is bored 12 pieces of centrifugal-blocks 29 are provided between disk 14, between the 4th cone cone disk 9 of disk 8 and the 5th, the 9th cone disk 15 passes through six roots of sensation leading screw 12 with the 6th cone disk 10 is connected, the 4th cone disk 8 by six roots of sensation leading screw 12 with the 7th bore disk 13 is connected, 12 alternative ring of leading screw around 17 periphery of output shaft is arranged in, the 6th cone disk 10 is connected by forcing elastic part 11 with the 7th cone disk 13, and pressure bearing 20 is logical Contact block is crossed with pressing arm 18 to be connected.

The pressing arm 18 is fixed on by pivot pin 26 in guide groove 25, and quiet press cylinder 6 passes through link 28 and axis Pin 26 is fixedly connected, and quiet press cylinder 6 is connected by conduit with pressured column plug tube 27, and pressured column plug tube 27 is consolidated by stent Be scheduled on quiet press cylinder 6, two pressing arms 18 be belong on quiet press cylinder 6 a pair mutually power so left and right bar Plus-pressure is also equal, before the 9th cone cone disk 8 of disk the 15, the 4th makes pressing arm 18 along intermediate pivot pin 26 under the promotion of centrifugal-block 29 After swing and centrepin position is motionless, and only sliding scale does not surpass the contact block at 18 both ends of pressing arm in entire speed-change process 2mm is crossed, belongs to extremely low speed, extremely low regions of lubrication.

It is fixed disk that described first cone disk 2, second, which bores disk the 4, the 8th and bores disk the 14, the 5th to bore disk 9, by spline structure and Axis connection, and pass through both ends snap ring and be stuck on input shaft 19.

The tenth cone disk 21, first bores the cone of disk 2, second disk 4, third cone disk 5 passes through spline structure and input shaft 19 It is connected, the 4th cone cone cone cone cone disk the 14, the 9th of disk the 13, the 8th of disk the 10, the 7th of disk the 9, the 6th of disk the 8, the 5th bores disk 15 and passes through flower Bond structure is connected with output shaft 17.

Various assemblies on the input shaft 19 are symmetrical arranged centered on equidistant coordinator 3, each on output shaft 17 Kind component is symmetrical arranged centered on forcing elastic part 11.

Technological means disclosed in the utility model is not limited to the technical means disclosed in the above technical means, also Including the technical solution being made of more than technical characteristic equivalent replacement, the unaccomplished matter of the utility model belongs to this field skill The common knowledge of art personnel.

Claims

1. a kind of symmetrical double belt large torque stepless speed changer, it is by the first cone disk (2), equidistant coordinator (3), the second cone disk (4), third cone disk (5), quiet press cylinder (6), gearbox (7), the 4th cone disk (8), the 5th cone disk (9), the 6th cone disk (10), forcing elastic part (11), leading screw (12), the 7th cone disk (13), the 8th cone disk (14), the 9th cone disk (15), loading bearing (16), pressing arm (18), pressure bearing (20), the tenth cone disk (21), position-limiting cover (22), guide groove (25), pivot pin (26), pressured column Plug tube (27), centrifugal-block (29), chain (30) part form, it is characterized in that：Lower housing (1) upper end is provided with upper shell, lower casing Body (1) both sides are respectively arranged with two bearing grooves, and bearing groove is provided with loading bearing (16), guide groove is provided between bearing groove (25), output shaft (17), input shaft (19) are provided in lower housing (1)；Input shaft (19) one end sequentially passes through loading bearing (16), pressure bearing (20), the tenth cone disk (21), the first cone disk (2), equidistant coordinator (3), the second cone disk (4), third cone disk (5), pressure bearing (20) is fixed in loading bearing (16), and input shaft (19) other end is connected with engine；First cone disk (2) disk (4) is bored by equidistant coordinator (3) second to be connected, be provided in equidistant coordinator (3) sliding block (23), gear (24), Gear shaft, rack are distributed into three groups of axial symmetry, and sliding block (23) bores disk (21), third with the tenth respectively by six roots of sensation leading screw (12) Cone disk (5) is connected；Tenth cone disk (21), the first cone disk (2) pass through chain (30) and the 7th cone disk (13), the 8th cone disk (14) It is connected, the second cone disk (4), third cone disk (5) are connected by chain (30) with the 5th cone disk (9), the 6th cone disk (10).

2. a kind of symmetrical double belt large torque stepless speed changer according to claim 1, it is characterized in that：Output shaft (17) one End is fixed in loading bearing (16), and output shaft (17) other end sequentially passes through position-limiting cover (22), pressure bearing (20), the 9th cone Disk (15), the 8th cone disk (14), the 7th cone disk (13), forcing elastic part (11), the 6th cone disk (10), the 5th cone disk (9), the 4th Cone disk (8), pressure bearing (20), position-limiting cover (22), loading bearing (16) are connected with gearbox (7), the 9th bore disk (15) and Between 8th cone disk (14), 12 pieces of centrifugal-blocks (29), the 9th cone disk are provided between the 4th cone disk (8) and the 5th cone disk (9) (15) it is connected by six roots of sensation leading screw (12) with the 6th cone disk (10), the 4th cone disk (8) passes through six roots of sensation leading screw (12) and the 7th cone Disk (13) is connected, and leading screw (12) is staggeredly arranged around output shaft (17) periphery, and the 6th cone disk (10) passes through forcing elastic part (11) it is connected with the 7th cone disk (13), pressure bearing (20) is connected by contact block with pressing arm (18).

3. a kind of symmetrical double belt large torque stepless speed changer according to claim 1, it is characterized in that：Pressing arm (18) is logical It crosses pivot pin (26) to be fixed in guide groove (25), quiet press cylinder (6) is fixedly connected by link (28) with pivot pin (26), quiet Press cylinder (6) is connected by conduit with pressured column plug tube (27), and pressured column plug tube (27) is fixed by the bracket to be added quiet On pressure cylinder (6).

4. a kind of symmetrical double belt large torque stepless speed changer according to claim 1, it is characterized in that：First cone disk (2), Second cone disk (4), the 8th cone disk (14), the 5th cone disk (9) are fixed disk, by spline structure and axis connection, and pass through both ends Snap ring is stuck on input shaft (19).

5. a kind of symmetrical double belt large torque stepless speed changer according to claim 1, it is characterized in that：Tenth cone disk (21), the first cone disk (2), the second cone disk (4), third cone disk (5) are connected by spline structure with input shaft (19), the 4th cone Disk (8), the 5th cone disk (9), the 6th cone disk (10), the 7th cone disk (13), the 8th cone disk (14), the 9th cone disk (15) pass through spline Structure is connected with output shaft (17).

6. a kind of symmetrical double belt large torque stepless speed changer according to claim 1, it is characterized in that：On input shaft (19) Various assemblies centered on equidistant coordinator (3) be symmetrical arranged, the various assemblies on output shaft (17) are with forcing elastic part (11) it is symmetrical arranged centered on.