CN2243409Y

CN2243409Y - Integrated rear-axle gear-box for agricultural truck

Info

Publication number: CN2243409Y
Application number: CN 96200046
Authority: CN
Inventors: 魏波; 李秀琴; 李巧风; 薛江涛; 王自勇; 边明远; 郭四清
Original assignee: XUCHANG MACHINE Manufacturing FACTORY
Current assignee: XUCHANG MACHINE Manufacturing FACTORY
Priority date: 1996-01-22
Filing date: 1996-01-22
Publication date: 1996-12-25
Anticipated expiration: 2006-01-22

Abstract

The utility model relates to a general gearbox, particularly the gearbox of a motor vehicle, which is characterized in that the gearbox is connected to a rear axle. A planetary gear is added on the input shaft of the gearbox. Double-stage gear drive between the driving gear of a 1 gear and the speed change gear of a 1 back gear is realized. The speed of the 1 back gear is lowered. That is to say, the speed of the low gear is decreased from 12 km per hour to 7 km per hour. The utility model has the advantages of low manufacture cost, increase of the security of low speed traveling, and enhancement of climbing capacity.

Description

Agriculture truck connected rear axle type change speed gear box

The utility model relates to the change speed gear box of general vehicle, especially is the connected rear axle type change speed gear box on a kind of agricultural three-wheel or the four-wheeled vehicle.

At present, employed change speed gear box on agricultural three-wheel or the four-wheeled vehicle in the society, 1 retaining driving gear is the single gear transmission with 1 retaining between variable gear, owing to structural limitations, can not well solve between low gear speed and the high gear speed and concerns.On its self-propelled vehicle, guaranteeing under the high gear speed 40Km/h situation, the low gear command speed is 12Km/h, this low gear speed seems higher, can cause: self-propelled vehicle low speed is exercised poor stability, degree of climbing ability is low and the problem of the tractive performance difference of the self-propelled vehicle that seems when exercising on the peaceful road of scraggly mud.

The purpose of this utility model is to overcome the weak point in the above prior art, is guaranteeing under the high gear speed 40Km/h situation and provide a kind of, can realize the change speed gear box of lower bottom gear speed (7Km/h).

The utility model is achieved in that

On 1, increase a planetary wheel,, make between 1 retaining driving gear and I retaining variable gear to be the two-stage gear transmission, realize the two-stage reduction of speed, thereby low gear speed is reduced by the dual gear that reverses gear.

The utility model further specifies middle in conjunction with the accompanying drawings embodiment:

Fig. 1 saves the main TV structure figure of the connected rear axle type change speed gear box of clutch assembly for agriculture truck,

Fig. 2 is the A-A cutaway view of Fig. 1,

Fig. 3 is that the B-B of Fig. 1 launches cutaway view,

Zero, parts sequence number in the diagram:

1, gearbox body, 2, differential assembly, 3,1 variable gear that reverses gear, 4, II keeps off driven gear, 5, reduction pinion teeth, 6, the output shaft spacing sleeve, 7, III keeps off driven gear, 8, output shaft end cap paper washer, 9, the output shaft end cap, 10, output shaft, 11, bearing, 12, bolt, 13, II III keeps off dual gear, 14, clutch assembly, 15, release thrust bearing, 16, the power-transfer clutch driving claw, 17, driven pawl cover, 18, oil sealing, 19, disengaging of clutch pawl seat, 20, bearing, 21, input shaft, 22,1 retaining driving gear, 23,1 retaining reversing gear, 24,1 retaining reversing gear cover, 25, the axle trip ring, 26, the input shaft end cap, 27, pad, 28, bearing, 29, reverse gear shaft, 30, O type circle, 31, the axle pad that reverses gear, 32, dual gear reverses gear, 33, the stifled bolt of oil, 34, rubber cradle, 35, steel ball, 36, self-locking spring, 37, bolt, 38, nut, 39, the loam cake soldering member, 40, bolt, 41, spring chair, 42, the loam cake paper washer, 43, the declutch shift shaft end cap, 44, declutch shift shaft end cap paper washer, 45, II III keeps off declutch shift shaft, 46,1 back fork axle, 47, shift fork, 48, elasticity garden pin, 49, spring cotter, 50, declutch shift shaft end cap 1,51, the axle trip ring.

This change speed gear box mainly is made of gearbox body, clutch assembly, input shaft, output shaft, reverse gear shaft, gear, bearing, end cap, declutch shift shaft, shift fork and differential assembly.Its particular case is:

(1) 13,22,23 3 gears are arranged on the input shaft 21, II III retaining dual gear 13 passes through splined with input shaft 21, and II III retaining dual gear 13 can be at input shaft 21 upper edge axial slips.1 retaining driving gear 22 passes through splined with input shaft 21, and axial location.1 retaining reversing gear 23 overlaps by 1 retaining reversing gear that 24 skies are enclosed within on the input shaft 21 and can be around input shaft 21 rotation.

(2) reverse gear that dual gear 32 skies are enclosed within on the reverse gear shaft 29 and can be around reverse gear shaft 29 rotations.The dual gear two ends toothed portion that reverses gear does not keep off reversing gear 23 constant-meshes with 1 retaining driving gear 22 and 1, and reverse gear shaft 29 can not rotate in casing 1 hole.

(3) four gears are arranged on the output shaft 10.1 reverses gear variable gear 3 and output shaft 10 by splined, and 1 variable gear 3 that reverses gear can move axially in output shaft 10 upper edges.Reduction pinion teeth 5, II retaining driven gear 4, III retaining driven gear 7 all pass through splined with output shaft 10, and axial location.

Also II, III retaining dual gear 13 can be installed on the output shaft 10, simultaneously III is kept off driven gear 7, output shaft spacing sleeve 6, II retaining driven gear 4 is installed on the input shaft 21, under this condition, need on the relevant position of axle 21 and axle 10, to be provided with respectively axle trip ring 51.

The principle of work of this change speed gear box is:

(1) when II III retaining declutch shift shaft 45 is pushed gearbox body 1, shift fork 47 by elasticity garden pin 48 and spring cotter 49 along with declutch shift shaft 45 is moved to the left, thereby drive II III retaining dual gear 13 along input shaft 21 axial slip left, with 7 engagements of III retaining driven gear.At this moment, power transmission path is: clutch assembly 14 → input shaft 21 → II III retaining dual gear 13 → III retaining driven gear 7 → output shaft 10 → reduction pinion teeth 5 → differential assembly 2.Rotate, thereby vehicle is advanced at utmost speed by semiaxis, wheel hub drive wheels then.

(2) when II III retaining declutch shift shaft 45 is pulled out gearbox body 1, shift fork 47 by elasticity garden pin 48 and spring cotter 49 along with declutch shift shaft 45 moves right, thereby drive II III retaining dual gear 13 along input shaft 21 axial slip to the right, with 4 engagements of II retaining driven gear.At this moment, power transmission path is: clutch assembly 14 → input shaft 21 → II III retaining dual gear 13 → II retaining driven gear 4 → output shaft 10 → reduction pinion teeth 5 → differential assembly 2.Rotate, thereby the vehicle middling speed is advanced by semiaxis, wheel hub drive wheels then.

(3) when 1 back fork axle 46 is pulled out gearbox body 1, shift fork 47 by elasticity garden pin 48 and spring cotter 49 along with declutch shift shaft 46 moves right, thereby drive I variable gear 3 slippage to the right of reversing gear, with 23 engagements of 1 retaining reversing gear.At this moment, power transmission path is: clutch assembly 14 → input shaft 21 → 1 retaining driving gears 22 → dual gear 32 → 1 retaining reversing gears 23 → 1 that the reverse gear variable gear 3 → output shaft 10 → reduction pinion teeth 5 → differential assembly 2 that reverses gear.Rotate, thereby make the vehicle ease ahead by semiaxis, wheel hub drive wheels then.

(4) when 1 back fork axle 46 is pushed gearbox body 1, shift fork 47 by elasticity garden pin 48 and spring cotter 49 along with declutch shift shaft 46 is moved to the left, thereby drive 1 variable gear 3 slippage left of reversing gear, with dual gear 32 engagements of reversing gear.At this moment, power transmission path is: clutch assembly 14 → input shaft 21 → 1 retaining driving gear 22 → dual gears 32 → 1 that reverse gear variable gear 3 → output shaft 10 → reduction pinion teeth 5 → differential assembly 2 that reverses gear.By semiaxis, the wheel hub drive wheels is rotated, and travels thereby vehicle is swung to then.

Said " connected rear axle " means: be to be connected as a single entity by fastener between gearbox body and the rear axle housing body, engine power directly passes on the semiaxis by gearbox gear and differential assembly, and such change speed gear box and back axle are generically and collectively referred to as " connected rear axle ".

Good effect of the present utility model:

1, on power shaft, only increase a gear, just realized the reduction of low gear speed, Cost is low.

2, the reduction of low gear speed has not only increased the security that low gear is travelled, and Improved the climbing capacity of vehicle.

Claims

1, a kind of change speed gear box mainly is made of gearbox body, clutch assembly, input shaft, output shaft, reverse gear shaft, gear, bearing, end cap, declutch shift shaft, shift fork and differential assembly, it is characterized in that:

(1) 13,22,23 3 gears are arranged on the input shaft 21, II III retaining dual gear 13 passes through splined with input shaft 21, and II III retaining dual gear 13 can be at input shaft 21 upper edge axial slips.1 retaining driving gear 22 passes through splined with input shaft 21, and axial location.1 retaining reversing gear 23 overlaps by 1 retaining reversing gear that 24 skies are enclosed within on the input shaft 21 and can be around input shaft 21 rotation,

(2) reverse gear that dual gear 32 skies are enclosed within on the reverse gear shaft 29 and can be around reverse gear shaft 29 rotations.The dual gear two ends toothed portion that reverses gear does not keep off reversing gear 23 constant-meshes with 1 retaining driving gear 22 and 1, and reverse gear shaft 29 can not rotate in casing 1 hole,

(3) four gears are arranged on the output shaft 10.1 reverses gear variable gear 3 and output shaft 10 by splined, and 1 variable gear 3 that reverses gear can move axially in output shaft 10 upper edges.Reduction pinion teeth 5, II retaining driven gear 4, III retaining driven gear 7 pass through splined with output shaft 10, and axial location.

2, change speed gear box according to claim 1, it is characterized in that II III retaining dual gear 13 is installed on the output shaft 10, simultaneously III is kept off driven gear 7, output shaft spacing sleeve 6, II retaining driven gear 4 is corresponding again and be installed on the input shaft 21, under this condition, need on the relevant position of axle 21 and axle 10, to be provided with respectively axle trip ring 51.