CN2886210Y - Transmission - Google Patents

Abstract

A speed-variator, for three or four wheels motor with petrol engine or diesel engine as power, one-seater cross-country multipurpose vehicle, and seating lawn mower, comprises of a left and a right case body, a spined shaft, a cylindrical gear, a planetary gear, a planetary gear shaft, a bearing and a half-axle.The key point is that a pair of bevel gears engaged with each other, one is provided in the case body through the bearing and the bearing base, having a flang at the end in order to connect with the engine clutch through an universal joint, and the other is provided on the splined shaft, wherein one bevel gear drives the clutch gear on the spined shaft to move left and right, achieving the clutch from the cylindrical gear, thereby, the variable-speed driving mechanism is achieved. The speed-variator has the characteristics of compact conformation, small volum, light weight, convenient operation for fixing, easy transfer, high reliability and high mechanical efficiency.

Description

A kind of speed changer

Technical field

The utility model relates to a kind of speed change gear, particularly relate to a kind of with petrol engine or diesel engine be power three, four-wheel motor cycle, the speed changer of single cross-country vehicle and sitted lawn machine, tiller.

Background technique

At present, three, on the four-wheel motor cycle, on single go-anywhere vehicle of multipurpose or sitted lawn machine, be extensive use of piston engine and diesel engine as power.And the moment of torsion of piston engine and diesel engine and speed range are all limited, can only in the very narrow scope of rotating speed, obtain bigger moment of torsion, like this, the occasion poor in the road conditions condition, that carrying capacity is big, often be difficult to satisfy power or the rotating speed needs of vehicle in advancing, satisfy these requirements, certainly will will increase the power of motor, this can cause that again own wt is excessive and cost is too high.In addition, existing motorcycle rear axle assy, its power transmission generally is: the power that drive motor imports into, after the deceleration, pass to back axle through longitudinal drive shaft, import differential mechanism by bevel gear again, two wheels about passing to by two semiaxis, powered vehicle is advanced.Retarder and differential mechanism generally are separately designs, and processing is formed by connecting respectively.For satisfying vehicle performance and requirement of strength, the structure of above-mentioned parts be connected often more complicated, the selection of material heaviness, power loss is big.

Summary of the invention

The purpose of this utility model be to provide a kind of can satisfy different working environments and different load-carrying needs, rational in infrastructure, be particularly suitable for petrol engine or diesel engine be power three, four-wheel motor cycle, the speed changer of single cross-country vehicle and sitted lawn machine, tiller.

The purpose of this utility model can reach by following technical measures.It is this speed changer, comprise: left and right casing, splined shaft, cylindrical gears, planetary pinion, planet pin, bearing and semiaxis, its key is: a pair of intermeshing bevel gear, one of them bevel gear by bearing, bearing support be contained in the casing, the end is equipped with a connecting flange so that be connected with the clutch of motor by a universal joint, another bevel gear then is contained on the splined shaft; The left and right motion of ordering about to be contained on the splined shaft of clutch tooth, thus realize with the cylindrical gears clutch so that realize the driving mechanism of speed change.

Described driving mechanism has the spring spiro rod that one one end is connected with pin, the other end is connected with driver's handle by the flexible axle backguy, and spring is equipped with in the bar portion of spring spiro rod; The clutch tooth is connected with pin.

For the stability that improves speed changer work, improve its mechanical efficiency, described cylindrical gears is good with spiral gear.

According to the above-mentioned speed changer that assembles, realize slowing down and increasing moment of torsion by a pair of umbrella gear; Thereby ordering about the left and right motion of clutch tooth by driving mechanism makes different gears obtain power realization speed change; Realize the differential function of left and right wheels by a cover planetary pinion.Because gear all pass through in the transmission of power or spline carries out, make the system can reliable, high efficiency running under high speed and high pulling torque operating mode; The utility model is similar to the transmission system of automobile, but simpler than the drive system structure of automobile, is equivalent to the speed changer and the backteeth case of automobile are integrated, and has reduced cost, simplifies the structure, and is beneficial to maintenance, can also solve left and right differential problem of taking turns.Overcome the existing limited speed of back axle use chain-driven of some three-wheels, four-wheel motor cycle in the past, fallen chain during high speed, transmission efficiency is not high, can not increase moment of torsion, can not solve the differential problem of left and right wheels when turning.

In sum, the utlity model has compact structure, volume is little, in light weight, easy for installation, the transmission simple, reliable, the characteristics that mechanical efficiency is high.

Description of drawings

Fig. 1 is an overall construction drawing of the present utility model;

Fig. 2 is the right elevation of Fig. 1.

Among the figure: 1 is left box body, 2,10,22,41,38 is bearing, 3, be bearing support, 4,7 is bevel gear, 5 is oil sealing, and 6 is right case, 8,28,33,50 is cylindrical gears, 9 is setting sleeve, and 11 is splined shaft, and 12 are the backguy nut, 13 is lid, and 14 is piston nut, 15,18,19,31,42,52 is nut, 16 are the backguy cover, and 17 is bolt, and 20 is piston, 21 is jump ring, and 23 is spring, 24,27 is socket head screw, 25 is right inner rotary member, and 26 is the right axle shaft sleeve pipe, 29,39 is paper washer, 30 is spring washer, and 31 is hexagon nut, and 32 is asteroid wheel, 34 is the left half axle sleeve pipe, and 35 are the major planets wheel, and 36 is left inner rotary member, 37 is planet pin, and 40 is end cap, and 43 is spring spiro rod, 44 is guide, and 45 is wear-resistant sleeve, and 47 is packing ring, 48 is pin, and 49 are the clutch tooth, and 51 is flange, 53 are cotter pin, 54,56,60,61 is hex head bolt, and 55 is purge cock, 57 is refueling bolt, and 58 is hollow pin, and 59 is exhaust apertures.

Embodiment

Hereinafter with reference to accompanying drawing concrete structure of the present utility model is further described, referring to Fig. 1,2, a kind of speed changer of the utility model, comprise: a left side, right case 1,6, splined shaft 11, cylindrical gears 8,28,33,50, greatly, asteroid wheel 35,32, planet pin 37, bearing 2,10,22,38,41 and semiaxis, its key is: a pair of intermeshing bevel gear 4,7, bevel gear 4 is by bearing 2, bearing support 3 is contained in the casing, a connecting flange is equipped with so that be connected with the clutch of motor by a universal joint in the end, and 7 of bevel gears are contained on the splined shaft 11; The clutch tooth that orders about to be contained on the splined shaft 11 49 left and right motions, thus realize and cylindrical gears 50,8 clutches, so that realize the driving mechanism of speed change.

Described driving mechanism has the spring spiro rod 43 that one one end is connected with pin 48, the other end is connected with driver's handle by the flexible axle wiring, and spring 23 is equipped with in the bar portion of spring spiro rod 43; Clutch tooth 49 is connected with pin 48.

For the stability that improves speed changer work, improve its mechanical efficiency, described in the present embodiment cylindrical gears 8,28,33,50 is a spiral gear.

According to the above-mentioned speed changer that assembles, its working procedure such as following:

Bevel gear 4 obtains moment of torsion from motor, drives bevel gear 7 rotations, and bevel gear 7 drives 49 rotations of clutch tooth by splined shaft 11 and pin 48; The rotating speed of wheel is meshed by clutch tooth 49 and different cylindrical gears and realizes, the clutch of clutch tooth 49 and different cylindrical gearss is then by spring 23 and driver's handle control.The flexible axle backguy is connected with spring pull bar 43, passes reinforcement lid 12 and backguy cover 16 and is connected with driver's handle.When the flexible axle backguy was strained, clutch tooth 49 and cylindrical gears 8 engagements, cylindrical gears 8 drove cylindrical gears 28 and then drive major planets wheel 35 with low speed rotation.When the flexible axle backguy was unclamped, spring 23 promoted clutch tooth 49 and cylindrical gears 50 engagements, and cylindrical gears 50 drives cylindrical gears 33 and then drives major planets takes turns 35 fast rotational.

If cylindrical gears 8 meshes with cylindrical gears 28 always, cylindrical gears 28 drives right inner rotary member 25, right inner rotary member 25 drives asteroid wheel 32 by planet axis 37, and asteroid wheel 32 drives major planets wheel 35 in the differential mode, and major planets is taken turns the internal spline of 35 endoporus and the left and right sides semiaxis engagement driving wheel of wheel is advanced.

In like manner, if cylindrical gears 50 meshes with cylindrical gears 33 always, cylindrical gears 33 drives left inner rotary member 36 and also drives asteroid wheel 32, drives major planets wheel 35 by differential, and the internal spline of major planets wheel 35 and the left and right sides semiaxis of wheel mesh driving wheel and advance.

Claims (3)

1, a kind of speed changer, comprise: left and right casing (1,6), splined shaft (11), cylindrical gears (8,28,33,50), large and small planet wheel (35,32), planet pin (37), bearing (2,10,22,38,41) and semiaxis, it is characterized in that: a pair of intermeshing bevel gear (4,7), bevel gear (4) by bearing (2), bearing support (3) be contained in the casing, the end is equipped with a connecting flange so that be connected with the clutch of motor by a universal joint, bevel gear (7) then is contained on the splined shaft (11); The left and right motion of ordering about to be contained on the splined shaft (11) of clutch tooth (49), thus realize and cylindrical gears (50,8) clutch, so that realize the driving mechanism of speed change.

2, speed changer according to claim 1, it is characterized in that: described driving mechanism has the spring spiro rod (43) that one one end is connected with pin (48), the other end is connected with driver's handle by the flexible axle backguy, and spring (23) is equipped with in the bar portion of spring spiro rod (43).

3, speed changer according to claim 1 is characterized in that: described cylindrical gears (8,28,33,50) is a spiral gear.