CN2081455U

CN2081455U - Multi-gear shifting belt pulley

Info

Publication number: CN2081455U
Application number: CN 90220622
Authority: CN
Inventors: 李斌
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-09-13
Filing date: 1990-09-13
Publication date: 1991-07-24

Abstract

The utility model relates to a multi-gear shifting belt pulley, belonging to a driving device, which comprises an inner wheel disc 1, an outer wheel disc 2, bearings 3, a bearing box 4, a pressing plate 5, a supporting seat 6, a rotating shaft 7, manipulating cables 8, etc. The utility model is characterized in that the widths of the V-shaped belt grooves of the inner wheel disc and the outer wheel disc can be adjusted by manual manipulation; the transmission ratio can be controlled and adjusted. The shift of the motorcycle can be chosen according to the change of traction and the motorcycle speed by the manual manipulation. An engine can keep the optimum working state (rotational speed, torque, fuel oil consumption) under various conditions. The energy loss can be reduced in the transmission process. The fuel oil is saved, and the fineness ratio of a sliding pair is reduced for improving the positioning accuracy.

Description

Multi-gear shifting belt pulley

The utility model belongs to transmission device, and specifically adjustable to axial belt pulley is used for the motorcycle variable speed drive.

At present, motorcycle is extensive use of variable-speed pulley, be made up of inside and outside two wheel discs, spring, positioning pawls, because the fineness ratio that slip is paid is big, spring pressure is big in addition, so its Location accuracy is poor, wearing and tearing are violent, noise is big, particularly can not adjust velocity ratio as requested, but the impacting force of borrowing centrifugal driving wheel to give v belt is come carry-over moment, promptly when this impacting force during less than spring pressure, inside and outside wheel disc is close together, and belt operates in the wheel disc maximum diameter.When belt tension during greater than spring pressure, spring is compression just, inside and outside wheel disc separately, belt is just down to the belt pulley minimum diameter.The merit of driving wheel is consumed in the radially slide waste that friction in caused the energy of inside and outside wheel disc to belt like this, can not utilize optimum speed, moment of torsion and the oil consumption of motor fully.Chinese patent CN86207117U, a kind of no cunning profit Combination leather belt wheel is disclosed, change original positioning pawl into the column type connecting arrangement, the guiding stem stem inserts in the driving hole of transmission stem stem, drive mandrel is adopted modified plastics, to reduce wear, increase its self-lubricating property, but do not solve fundamentally that mechanical wear is big, transmission efficiency is low, waste energy and the motor influence in working life, and can not change velocity ratio as required under steam, Location accuracy is poor, occurs stuck easily and the malfunctioning phenomenon of reaction.

The purpose of this utility model is to overcome the deficiencies in the prior art, and design a kind of Location accuracy height, mechanical wear is little, transmission efficiency is high, fuel-economizing is energy-conservation, noise is little, long service life, can change velocity ratio as required, can make motor be in many gears speed pulley of optimum Working (rotating speed moment of torsion, oil consumption) in all cases.

Technology full mold scheme of the present utility model is: handle steel cable by outer wheel disc, interior wheel disc, bearing and bearing combined pressure plate and supporting base, rotating shaft and forms one and overlap the speed belt wheel system.4-6 positioning hole is set on the outer wheel disc, respectively with interior wheel disc on corresponding guide finger cooperatively interact, male splined shaft connects in also can adopting, the diameter of the axle sleeve of the axle of wheel disc and outer wheel disc in dwindling, and the length of the axle sleeve of the axle of the interior wheel disc of increase and outer wheel disc, the fineness ratio that makes its sliding pair is reduced to 0.3～1 from former 1.7, to improve its Location accuracy, overcomes and produces stuck and react malfunctioning phenomenon.The axle of interior wheel disc is packed in the axle sleeve of outer wheel disc, the axle sleeve of outer wheel disc is loaded in the bearing of bearing in closing, the middle part of pressing plate is provided with 2 locating studs, cooperate with the pin-and-hole that bearing closes, one end of pressing plate is rotating shaft, and rotating shaft is fixed on the transmission case by bearing support, and the other end is connecting the manipulating wire rope, making pressing plate is that the center of circle swings with the rotating shaft, oscillating quantity is handled by handling steel cable, and by regulating pulling force and the stroke of handling steel cable, just adjustable bearings is closed the pressure of external wheel disc, during outer wheel disc pressurized, inwardly wheel disc axial displacement, inside and outside wheel disc is close to, and belt turns round at the belt pulley maximum diameter, otherwise, inside and outside wheel disc separately, belt is in the running of belt pulley minimum diameter, promptly by regulating the pulling force of handling steel cable and stroke to regulate the pressure that bearing closes external wheel disc, thereby reach the groove width of adjusting inside and outside wheel disc belt grooves, the control velocity ratio.As required, 2～4 gears can be set, regulate to realize many grades of speed changes.

Fig. 1 is the plan view of multi-gear transmission belt pulley, and Fig. 2 is the plan view of multi-gear transmission belt pulley.

Fig. 3 is interior wheel disc part figure in addition, and Fig. 4 is outer wheel disc part figure in addition, and Fig. 5 is pressing plate part figure in addition.

To be described in further detail many grades of speed pulleies with reference to the accompanying drawings below:

Design has 4～6 guiding grooves on the interior wheel disc 1, respectively with outer wheel disc 2 on pilot hole cooperatively interact, the axle of interior wheel disc 1 is installed in the axle sleeve of outer wheel disc 2, is furnished with bearing 3 and bearing on the axle sleeve of outer wheel disc 2 and closes 4; Bearing closes 4 outsides has two positioning pin holes to cooperate with locating stud on the pressing plate 5, pressing plate 5 one ends are bearing 6, rotating shaft 6 is fixed by bearing support 7 and transmission case body, make pressing plate 5 do 30 ° of swings for the center of circle with rotating shaft 6, the other end of pressing plate 5 is equipped with handles steel cable 8, handle steel cable 8 and link to each other, and 2～4 gears are set as required with control system.

When the car starting, when climbing big slope, can draw in top grade with handling steel cable 8, make the maximum diameter operation of belt at wheel disc, at this moment, before and after the velocity ratio of belt pulley be 2,22, when car during, can insert middle-grade with handling steel cable 8 with low speed driving, this moment, velocity ratio was 1.5, when the car height drives at moderate speed, can insert low grade with handling steel cable 8, at this moment, belt is positioned at wheel tries to get to the heart of a matter directly, and velocity ratio is 0.86.

The utility model compared with prior art, can make motorcycle according to actual needs tractive force and variation of the speed of a motor vehicle and select artificially the gearratio of belt pulley in travelling, make engine under various environment, be in optimum Working (rotating speed, moment of torsion, oil consumption), and can reduce the tensioning power of belt pulley, thereby reduced the loss of energy in transmittance process, making it can increase tractive force when low speed, increase climbing capacity, when high speed, can reduce the rotating speed of engine, to reduce oil consumption, through units concerned's test, compared with prior art, has capable of saving fuel oil average 12%, increase climbing capacity 10%, reduce by 2 decibels of driving noises, reduce engine speed 15%, (under the equal speed of a motor vehicle), improve 10% of max. speed, improve 30% of car sliding performance, prolong the advantages such as engine belt pulley service life.

Claims

1, a kind of many gears speed pulley is made of the interior wheel disc 1 of axially relative displacement, outer wheel disc 2 etc., and the axle of wheel disc 1 is packed in the axle sleeve of outer wheel disc 2 in it is characterized in that, the axle sleeve of outer wheel disc 2 bearing of packing into closes in the bearing 3 in 4; The middle part of pressing plate 5 is provided with 2 locating studs, and the pin-and-hole that closes on 4 with bearing cooperates, and an end of pressing plate 5 is rotating shaft 6, rotating shaft 6 is fixed on the transmission case body by support 7, pressing plate 5 the other ends are connecting manipulation steel cable 8, handle steel cable 8 and link to each other with control system, and control system can be provided with 2～4 gears;

2, belt pulley as claimed in claim 1, its feature also be said in the fineness ratio paid of the slip of the axle of wheel disc 1 and the axle sleeve of outer wheel disc 2 be 1～0.3.