CN2583446Y

CN2583446Y - Seven-gear speed changing box for agricultural transport vehicle

Info

Publication number: CN2583446Y
Application number: CN 02267753
Authority: CN
Inventors: 王清水
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-18
Filing date: 2002-06-18
Publication date: 2003-10-29
Anticipated expiration: 2012-06-18

Abstract

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

Description

Seven grades of gearboxes of agricultural transportation vehicle

Technical field

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

Background technique

At present, the agricultural transportation vehicle gearbox commonly used such as the patent No. are 9622770 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, seven grades of gearboxes of the agricultural transportation vehicle of gearbox long service life.

To achieve these goals, the technical solution of the utility model is: seven grades of gearboxes of a kind of agricultural transportation vehicle comprise 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 differential assembly in the casing, be equipped with on the differential assembly and pass gearwheel eventually, I axle one end as power input shaft is equipped with clutch, it is characterized in that: the I axle is a gear shaft, II axle, III axle, IV axle are splined shafts, at the I axle the other end one grade of constant mesh gear are installed; II axle one end is equipped with and one grade of constant mesh gear meshed gears, and two, five and three, six grades of double-sliding gears also are installed on the II axle successively; One, reverse gear sliding gear; Three, six grades of driven gears also are installed on the III axle successively; Two, five grades of driven gears; Low-speed active gear and one, fourth gear driven gear; The IV axle is equipped with and passes small gear, reverse gear driven gear and secondary speed change double-sliding gear eventually.

The rear end of described gear box is circular arc.

The utility model adopts said structure, and I axle one end is equipped with one grade of 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; The secondary speed change double-sliding gear and one, the reverse gear double-sliding gear that are fixed on one on the III axle, fourth gear driven gear, the installation of IV axle are shared gear, have reduced the casing width, and casing intensity is improved, and have reduced cost; The rear end of described gear box is circular 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

Seven grades of gearboxes of a kind of agricultural transportation vehicle comprise 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 eventually gearwheel 12, as I axle 2 one ends of power input shaft clutch is installed, I axle 2 is a gear shaft, II axle 5, III axle 7, IV axle 9 are splined shafts, at I axle 2 the other ends one grade of constant mesh gear are installed; II axle 6 one ends are equipped with and one grade of constant mesh gear meshed gears 3, and two, five or three, six grades of double-sliding gears 16,, reverse gear sliding gear 4 also are installed on the II axle 5 successively; Three, six grades of driven gears 17, two, five grades of driven gears 15,, fourth gear driven gear and low-speed active gear 8 also are installed on the III axle 7 successively; IV axle 9 is equipped with and passes small gear 13, reverse gear driven gear 14 and secondary speed change double-sliding gear 10 eventually.The rear end of described gear box 1 is circular arc.

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 one grade of constant mesh gear and the II axle 5 cooperates, stir one, reverse gear double-sliding gear 4 and, 6 engagements of fourth gear driven gear, the gearwheel engagement of the secondary speed change double-sliding gear of installing on low-speed active gear 8 on the III axle 7 and the IV axle 9 10 passes small gear 13 eventually and passes gearwheel 12 engagements eventually.

Second gear: power is from 2 inputs of I axle, the gear 3 that is engaged with on one grade of constant mesh gear and the II axle 5 cooperates, stir two, five or three, six grades of double-sliding gears 16 and two, five grades of driven gear 15 engagements, the gearwheel engagement of the secondary speed change double-sliding gear of installing on low-speed active gear 8 on the III axle 7 and the IV axle 9 10 passes small gear 13 eventually and passes gearwheel 12 engagements eventually.

Third gear: power is from 2 inputs of I axle, the gear 3 that is engaged with on one grade of constant mesh gear and the II axle 5 cooperates, stir two, five or three, six grades of double-sliding gears 16 and three, six grades of driven gear 17 engagements, the gearwheel engagement of the secondary speed change double-sliding gear of installing on low-speed active gear 8 on the III axle 7 and the IV axle 9 10 passes small gear 13 eventually and passes gearwheel 12 engagements eventually.

Fourth gear: power is from 2 inputs of I axle, the gear 3 that is engaged with on one grade of constant mesh gear and the II axle 5 cooperates, stir one, reverse gear double-sliding gear 4 and, 6 engagements of fourth gear driven gear, the pinion of the secondary speed change double-sliding gear of installing on low-speed active gear 8 on the III axle 7 and the IV axle 9 10, the whole small gear 13 that passes meshes with the whole gearwheel 12 that passes.

Five grades: power is from 2 inputs of I axle, the gear 3 that is engaged with on one grade of constant mesh gear and the II axle 5 cooperates, stir two, five or three, six grades of double-sliding gears 16 and two, five grades of driven gear 15 engagements, the pinion of the secondary speed change double-sliding gear of installing on low-speed active gear 8 on the III axle 7 and the IV axle 9 10, the whole small gear 13 that passes meshes with the whole gearwheel 12 that passes.

Six grades: power is from 2 inputs of I axle, the gear 3 that is engaged with on one grade of constant mesh gear and the II axle 5 cooperates, stir two, five or three, six grades of double-sliding gears 16 and three, six grades of driven gear 17 engagements, the pinion of the secondary speed change double-sliding gear of installing on low-speed active gear 8 on the III axle 7 and the IV axle 9 10, the whole small gear 13 that passes meshes with the whole gearwheel 12 that passes.

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

Claims

1, seven grades of gearboxes of a kind of agricultural transportation vehicle comprise casing (1), be installed in I axle (2) on the casing (1) by bearings, II axle (5), III axle (7), IV axle (9), 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, I axle (2) one ends as power input shaft are equipped with clutch, it is characterized in that: I axle (2) is a gear shaft, II axle (5), III axle (7), IV axle (9) is a splined shaft, at I axle (2) the other end one grade of constant mesh gear is installed; II axle (5) one ends are equipped with and one grade of constant mesh gear meshed gears (3), and two, five and three, six grades of double-sliding gears (16) also are installed on the II axle (5) successively; One, reverse gear sliding gear (4); Three, six grades of driven gears (17) also are installed on the III axle (7) successively; Two, five grades of driven gears (15); Low-speed active gear (8) and one, fourth gear driven gear (6); IV axle (10) is equipped with and passes small gear (13), reverse gear driven gear (14) and secondary speed change double-sliding gear (10) eventually.

2, seven grades of gearboxes of agricultural transportation vehicle according to claim 1, it is characterized in that: the rear end of described gear box (1) is circular arc.