CN2572138Y

CN2572138Y - Speed variator box for agricultural conveying vehicle

Info

Publication number: CN2572138Y
Application number: CN 02267752
Authority: CN
Inventors: 王清水
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-18
Filing date: 2002-06-18
Publication date: 2003-09-10
Anticipated expiration: 2012-06-18

Abstract

The utility model relates to the technical field of a gear transmission device. The utility model comprises a box body, a I shaft, a II shaft, a III shaft, a IV shaft, a shifting fork assembly and a differential mechanism assembly, wherein, the I shaft, the II shaft, the III shaft, the IV shaft and the shifting fork assembly are arranged on the box body; the differential mechanism assembly is arranged in the box body; an end-transmission big gear is arranged on the differential mechanism assembly; a clutch is arranged on the I shaft which is a gear shaft; the II shaft, the III shaft and the IV shaft are spline shafts; one end of the I shaft is provided with a constant mesh gear; one end of the II shaft is provided with a gear which is meshed with the constant mesh gear; a duplex slide gear of the second and the fifth gears, the duplex slide gear of the third and the sixth gears, a driving gear for the first and a back gears are successively arranged on the II shaft; a driven gear for the third and the sixth gears, the driven gear for the second and the fifth gears, and the driven gear for the first and the forth gears and a low-speed driving gear are succusively arranged on the III shaft; the IV shaft is provided with the driven gear for the back gear, an end-transmission pinion, a range-shift duplex shifting slide gear. The utility model has the advantages of reasonable structure, good exchangeability of fittings, low cost and long life time.

Description

A kind of agricultural transportation vehicle gearbox

Technical field

The utility model relates to the gear drive technical field, is specifically related to a kind of agricultural transportation vehicle gearbox.

Background technique

At present, the agricultural transportation vehicle gearbox commonly used such as the patent No. are 96227140 three-wheeled farm transport vehicle gearbox, it comprises four transmission shafts, 12 gears, three groups of shifting fork assemblies, finish four forward gearss and a reverse gear, also having its patent name of a kind of structure is five gear three-wheeled farm transport vehicle gearboxes, on the I axle as power input shaft sliding gear is installed, two, third gear sliding gear and duplicate gear, this structure, gear is more, and gear is few, the cost height, and it is many as gear is installed on the I axle of power input shaft, damage complex structure easily, unreasonable, make gearbox short working life.

Summary of the invention

The purpose of this utility model just provides a kind of simple and reasonable, and cost is low, gear distributes rationally, the agricultural transportation vehicle gearbox of gearbox long service life.

To achieve these goals, the technical solution of the utility model is: a kind of agricultural transportation vehicle gearbox comprises casing, be installed in I axle, II axle, III axle, IV axle on the casing by bearings, be installed on the shifting fork assembly on the casing, and be installed in the interior differential assembly of casing, and be equipped with on the differential assembly and pass gearwheel eventually, on the I axle as power input shaft clutch is installed, its structural feature is: described I axle is a gear shaft, and II axle, III axle, IV axle are splined shaft; I axle one end is equipped with constant mesh gear; II axle one end is equipped with and the constant mesh gear meshed gears, and two, five and three, six grades of double-sliding gears and, reverse driving gear also are installed on the II axle successively; Three, six grades of driven gears also are installed successively, two, five grades of driven gears, one, fourth gear driven gear and low-speed active gear on the III axle; The IV axle is equipped with the reverse gear driven gear, passes small gear, secondary speed change double crosslinking sliding gear eventually.

The rear end of described gear box is the garden arc.

Gear width described one, reverse driving gear is greater than or equal to the twice of other gear width.

Described one, reverse driving gear and pass eventually that the small gear alignment is placed in the middle to distribute.

The utility model adopts said structure, and I axle one end is equipped with constant mesh gear, makes a gear only is installed on the I axle as power input shaft, one stressed less, be not easy to damage, and the constant mesh gear of I axle and II axle is arranged at the end of I axle, II axle, distribute along box bilateral wall, support by the two side, stressing conditions is good, has prolonged the working life of gearbox, and realized the 6+R gear, gear is distributed rationally, reduced gear quantity, reduced cost; Gear width described one, reverse driving gear is greater than or equal to the twice of other gear width, B and described one, reverse driving gear and pass eventually that the small gear alignment is placed in the middle to distribute make to reduce casing centre distance, reduce the casing width, improve casing intensity, reduce cost.The rear end of described gear box is the garden arc, saves material, and is in light weight, the intensity height, and can be converted on present product, under the situation that does not change casing centre distance, the component universality height has reduced the goods input, has improved manufacturing efficiency.

Description of drawings

Accompanying drawing shows the utility model embodiment's the compound plan view that cuts open;

Embodiment

The utility model comprises casing 1, the rear end of described gear box 1 is the garden arc, be installed in I axle 2, II axle 5, III axle 7, IV axle 9 on the casing 1 by bearings, be installed on the shifting fork assembly on the casing, and be installed in differential assembly 11 in the casing 1, and be equipped with on the differential assembly 11 and pass gearwheel 12 eventually, on the I axle 2 as power input shaft clutch is installed, described I axle 2 is gear shafts, and II axle 5, III axle 7, IV axle 9 are splined shaft; I axle 2 one ends are equipped with constant mesh gear; II axle 5 one ends are equipped with and constant mesh gear meshed gears 3, the gear width that two, five and three, six grades of double-sliding gears 16 and, reverse driving gear 4,, reverse driving gear also are installed on the II axle 5 successively is greater than or equal to the twice of other gear width; Three, six grades of driven gears 17, two, five grades of driven gears 15,, fourth gear driven gear 6 and low-speed active gear 8 also are installed on the III axle 7 successively; IV axle 9 is equipped with reverse gear driven gear 14, passes small gear 13, secondary speed change double crosslinking sliding gear 10,, reverse driving gear and placed in the middle distribution of whole biography small gear alignment eventually.

The gear transmission route of each gear is as follows in the foregoing description:

One grade: power is from 2 inputs of I axle, the gear 3 that is engaged with on constant mesh gear and the II axle 5 cooperates, stir one, reverse driving gear 4 and, 6 engagements of fourth gear driven gear, low-speed active gear 8 on the III axle 7 meshes with the gearwheel of secondary speed change double crosslinking sliding gear 10, passes small gear 13 and biography gearwheel 12 engagements eventually eventually.

Second gear: power is from 2 inputs of I axle, the gear 3 that is engaged with on constant mesh gear and the II axle 5 cooperates, stir small gear and two, five grades of driven gear 15 engagements of two, five and three, six grades of double-sliding gears 16, low-speed active gear 8 on the III axle 7 meshes with the gearwheel of secondary speed change double crosslinking sliding gear 10, passes small gear 13 and biography gearwheel 12 engagements eventually eventually.

Third gear: power is from 2 inputs of I axle, the gear 3 that is engaged with on constant mesh gear and the II axle 5 cooperates, stir gearwheel and three, six grades of driven gear 17 engagements of two, five and three, six grades of double-sliding gears 16, low-speed active gear 8 on the III axle 7 meshes with the gearwheel of secondary speed change double crosslinking sliding gear 10, passes small gear 13 and biography gearwheel 12 engagements eventually eventually.

Fourth gear: power is from 2 inputs of I axle, the gear 3 that is engaged with on constant mesh gear and the II axle 5 cooperates, stir one, reverse driving gear 4 and, 6 engagements of fourth gear driven gear, the pinion of one on the III axle 7, fourth gear driven gear 6 and secondary speed change double crosslinking sliding gear 10 passes small gear 13 and biography gearwheel 12 engagements eventually eventually.

Five grades: power is from 2 inputs of I axle, the gear 3 that is engaged with on constant mesh gear and the II axle 5 cooperates, stir small gear and two, five grades of driven gear 15 engagements of two, five and three, six grades of double-sliding gears 16, the pinion of one on the III axle 7, fourth gear driven gear 6 and secondary speed change double crosslinking sliding gear 10 passes small gear 13 and biography gearwheel 12 engagements eventually eventually.

Six grades: power is from 2 inputs of I axle, the gear 3 that is engaged with on constant mesh gear and the II axle 5 cooperates, stir gearwheel and three, six grades of driven gear 17 engagements of two, five and three, six grades of double-sliding gears 16, the pinion of one on the III axle 7, fourth gear driven gear 6 and secondary speed change double crosslinking sliding gear 10 passes small gear 13 and biography gearwheel 12 engagements eventually eventually.

Reverse gear: power is from I axle 2 input, and the gear 3 that is engaged with on constant mesh gear and the II axle 5 cooperates, stirs one, reverse driving gear 4 and 14 engagements of IV axle 9 reverse gear driven gears, passes small gear 13 eventually and meshes with biography gearwheel 12 eventually.

Claims

1, a kind of agricultural transportation vehicle gearbox comprises casing (1), be installed in I axle (2), II axle (5), III axle (7), IV axle (9) on the casing (1) by bearings, be installed on the shifting fork assembly on the casing, and be installed in differential assembly (11) in the casing (1), be equipped with on the differential assembly (11) and pass gearwheel (12) eventually, on the I axle (2) as power input shaft clutch is installed, it is characterized in that: described I axle (2) is a gear shaft, and II axle (5), III axle (7), IV axle (9) are splined shaft; I axle (2) one ends are equipped with constant mesh gear; II axle (5) one ends are equipped with and constant mesh gear meshed gears (3), and two, five and three, six grades of double-sliding gears (16) and, reverse driving gear (4) also are installed on the II axle (5) successively; Three, six grades of driven gears (17) also are installed successively, two, five grades of driven gears (15), one, fourth gear driven gear (6) and low-speed active gear (8) on the III axle (7); IV axle (9) is equipped with reverse gear driven gear (14), passes small gear (13), secondary speed change double crosslinking sliding gear (10) eventually.

2, agricultural transportation vehicle gearbox according to claim 1 is characterized in that: the rear end of described gear box (1) is the garden arc.

3, agricultural transportation vehicle gearbox according to claim 1 is characterized in that: gear width described, reverse driving gear (4) is greater than or equal to the twice of other gear width.

4, agricultural transportation vehicle gearbox according to claim 1 is characterized in that: described one, reverse driving gear (4) and pass small gear (13) alignment eventually and distribute between two parties.