CN204878649U - Wheeled tractor's gearbox - Google Patents

Abstract

The utility model relates to a wheeled tractor's gearbox, including power input shaft, jackshaft and power take off mechanism, power take off mechanism includes preceding actuating mechanism and back actuating mechanism, preceding actuating mechanism includes forerunner's moving axis III of being connected through gear train and jackshaft transmission, back actuating mechanism includes a rear drive shaft IV of being connected through gear train and jackshaft transmission, the utility model discloses a synchronous drive of slowing down that sets up front axle, back axle in same gearbox is exported, has not only reduced the wheel base of tractor, has improved the stability of tractor operation, also makes the structure of gearbox compacter, has reduced manufacturing cost.

Description

Gearbox for a wheeled tractor

technical field

The utility model relates to a deceleration device, in particular to a gearbox for a wheeled tractor.

Background technique

For tillage machinery that is driven and pulled by a tractor and completes multiple operations such as subsoiling, rotary tillage and soil preparation at one time, its gearbox must have a large output torque, especially for areas with poor cultivated land conditions. The size and output mode of the output torque are more demanding.

Existing land preparation machines are generally driven by two wheels, and the output torque of the gearbox is small. For areas with poor cultivated land environment, it is difficult for two-wheel drive tillage machines to meet the operation requirements. It is small, and the number of shifting gears of the traditional gearbox is small, so it is difficult to adapt to the needs of different traction forces and moving speeds in complex areas.

Moreover, the traditional four-wheel drive of tractor mainly drives a front gearbox through the rear gearbox to realize the four-wheel drive output. The structure is complex, which is not conducive to the shortening of the wheelbase, and the transmission efficiency is relatively low.

Therefore, it is necessary to improve the gearbox of the tillage machinery pulled by the existing tractor, so as to change its power output mode and increase its output torque.

Utility model content

In view of this, the purpose of this utility model is to provide a gearbox, which enables the tractor to choose two-wheel drive or four-wheel drive at the same time, so as to meet the walking requirements of the tractor under different road conditions, and it has multiple output gears , to ensure that the output torque meets the requirements of cultivated land.

The technical scheme that the utility model solves its technical problem adopts is:

A gearbox for a wheeled tractor, including a power input shaft, an intermediate shaft and a power output mechanism, the power output mechanism includes a front drive mechanism and a rear drive mechanism, and the front drive mechanism includes a transmission connection with the intermediate shaft through a gear set the front drive shaft, and the rear drive mechanism includes a rear drive shaft connected to the intermediate shaft through a gear set.

As a further innovation of the utility model,

Step teeth B1, drive teeth B2, drive teeth B3, step teeth B4, and reverse gear drive teeth B5 are sequentially arranged on the intermediate shaft, and the above teeth are all matched with the key grooves of the intermediate shaft to form a sliding connection;

The front drive shaft includes a double disc tooth C1 and a reverse gear C2, and the above teeth are all matched with the keyway of the front drive shaft to form a sliding connection;

The rear drive shaft includes passive teeth D1 and auxiliary drive teeth D2, the passive teeth D1 are rotatably connected to the rear drive shaft, and the auxiliary drive teeth D2 form a sliding connection with the rear drive shaft through keyway fit;

Among them, the large toothed plate B1-1 of the stepped tooth B1 meshes with the driving tooth A1 of the power input shaft, and the small toothed plate B1-2 of the stepped tooth B1 meshes with the driving toothed plate D1-1 of the driven tooth D1 of the rear drive shaft. The tooth plate B1-2 is also meshed with the sliding tooth A2 on the power input shaft, the driving tooth B2 is used to mesh with the large tooth plate A3-1 of the stepped tooth A3 on the power input shaft, and the driving tooth B3 is used to mesh with the power input shaft The small tooth plate A3-2 of the stepped tooth A3 meshes, the large tooth plate B4-1 of the stepped tooth B4 is used for meshing with the driving tooth A4 of the power input shaft, and the small tooth plate B4-2 of the stepped tooth B4 is used for the power input The drive gear A5 of the shaft meshes;

One of the double gears C1, one gear C1-1 is used to mesh with the drive gear B2, the other gear C1-2 of the double gear C1 is used to mesh with the drive gear D2-1 of the auxiliary drive gear D2, and the reverse gear Tooth C2 meshes with reverse drive tooth B5 during reverse gear;

The driven tooth D1 also includes a clutch disc D1-2, and the drive tooth disc D2 includes a plug-in disc D2-2. When the plug-in disc D2-2 and the clutch disc D1-2 are combined, the drive tooth disc of the driven tooth D1 D1-1 is coaxially fixed with the rear drive shaft.

As a further innovation of the present utility model, the clutch disc D1-2 includes a plurality of protruding teeth arranged in an annular array, and a plurality of engaging teeth corresponding to the protruding teeth are arranged in a circular array on the insertion disc D2-2. The combination of starting teeth and occlusal teeth makes the driven teeth D1 fixed on the rear drive shaft through the driving chainring D2.

The beneficial effects of the utility model are:

1. The utility model not only reduces the wheelbase of the tractor, improves the stability of the operation of the tractor, but also makes the structure of the gearbox more compact through a synchronous deceleration drive output of the front axle and the rear axle in the same gearbox. Manufacturing costs are reduced.

2. The utility model realizes the separate output of front and rear power by adding shaft III and shaft IV to the traditional double-shaft gearbox, and meanwhile, the expanded shaft structure increases the number of variable gears of the gearbox.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a structural diagram A of the utility model.

Fig. 2 is a structural diagram B of the utility model.

Fig. 3 is a schematic diagram of a gearbox structure in the prior art.

In the figure: Ⅰ is the power input shaft, Ⅱ is the intermediate shaft, Ⅲ is the front drive shaft, and Ⅳ is the rear drive shaft.

Detailed ways

Now in conjunction with accompanying drawing, the utility model is described in further detail. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the utility model in a schematic way, so they only show the configurations related to the utility model.

As shown in Figure 3, it is a dual-shaft gearbox mechanism in the prior art, which mainly includes a power input shaft I and an intermediate shaft II, wherein the power input shaft I is connected to the intermediate shaft II through a transmission gear set, The end of the power input shaft I is connected to the power input mechanism of the rear wheels, and the intermediate shaft II is connected to the front gearbox through a transmission shaft to realize the deceleration and torque increase of the front wheels. The extra front gearbox is heavy and increases the manufacturing cost and structural complexity.

As shown in Figure 1 and Figure 2, it is the four-axis gearbox in the utility model:

It includes a power input shaft I, an intermediate shaft II and a power output mechanism. The power output mechanism includes a front drive mechanism and a rear drive mechanism. The front drive mechanism includes a front drive shaft III connected to the intermediate shaft II through a gear set. The rear drive mechanism includes a rear drive shaft IV that is transmission-connected to the intermediate shaft II through a gear set.

Drive gear A1, sliding gear A2, stepped gear A3, drive gear A4, and drive gear A5 are sequentially arranged on the power input shaft I;

Step teeth B1, drive teeth B2, drive teeth B3, step teeth B4, and reverse gear drive teeth B5 are sequentially arranged on the intermediate shaft II, and the above teeth are all slidably connected with the intermediate shaft II through key grooves;

The front drive shaft III includes a double disc tooth C1 and a reverse gear C2, and the above teeth are all slidably connected with the front drive shaft III through a keyway;

The rear drive shaft IV includes passive teeth D1 and auxiliary drive teeth D2, the passive teeth D1 are rotationally connected with the rear drive shaft IV, and the auxiliary drive teeth D2 are slidably connected with the rear drive shaft IV through keyway fit;

Among them, the large tooth plate B1-1 of the stepped tooth B1 is used to mesh with the drive tooth A1 of the power input shaft I, and the small tooth plate B1-2 of the stepped tooth B1 is used to mesh with the drive tooth plate D1 of the driven tooth D1 of the rear drive shaft IV -1 meshing, while the small toothed plate B1-2 is also used to mesh with the sliding tooth A2 on the power input shaft I, and the drive tooth B2 is used to mesh with the large toothed plate A3-1 of the stepped tooth A3 on the power input shaft I , the driving tooth B3 is used to mesh with the small tooth plate A3-2 of the stepped tooth A3 on the power input shaft I, the large tooth plate B4-1 of the stepped tooth B4 is used to mesh with the driving tooth A4 of the power input shaft, and the stepped tooth B4 The small tooth plate B4-2 is used to mesh with the driving tooth A5 of the power input shaft I;

One of the double gears C1, one gear C1-1 is used to mesh with the drive gear B2, the other gear C1-2 of the double gear C1 is used to mesh with the drive gear D2-1 of the auxiliary drive gear D2, and the reverse gear Tooth C2 meshes with reverse drive tooth B5 during reverse gear;

The driven tooth D1 also includes a clutch disc D1-2, and the drive tooth disc D2 includes a plug-in disc D2-2. When the plug-in disc D2-2 and the clutch disc D1-2 are combined, the drive tooth disc of the driven tooth D1 D1-1 is coaxially fixed with the rear drive shaft IV.

The front drive shaft III replaces the front drive transfer case of the traditional tractor transmission mechanism, and the rear drive shaft IV is directly connected to the front drive axle through an output shaft, which makes the structure more compact and saves manufacturing costs.

The rear drive shaft IV of the utility model is the output of the rear PTO, and the traditional gearboxes are all realized by the power input shaft I. Axis IV enables more speed PTO.

Inspired by the above-mentioned ideal embodiment according to the utility model, and through the above-mentioned description content, relevant staff can completely make various changes and modifications within the scope of not deviating from the technical idea of the utility model. The technical scope of this utility model is not limited to the content in the description, but must be determined according to the scope of the claims.

Claims (3)

1. the gearbox of a wheeled tractor, comprise power input shaft, jack shaft and power take-off mechanism, it is characterized in that: described power take-off mechanism comprises front driving mechanism and rear drive mechanism, described front driving mechanism comprises a drive axle be in transmission connection by gear train and jack shaft, and described rear drive mechanism comprises a rear drive shaft be in transmission connection by gear train and jack shaft.

2. the gearbox of a kind of wheeled tractor as claimed in claim 1, is characterized in that:

Described jack shaft is disposed with step tooth (B1), driving gear (B2), driving gear (B3), step tooth (B4), the driving gear that reverses gear (B5), above-mentioned tooth all coordinates formation to be slidably connected with jack shaft by keyway;

Described drive axle comprises a double plate tooth (C1), the tooth that reverses gear (C2), above-mentioned tooth all coordinates formation to be slidably connected with drive axle by keyway;

Described rear drive shaft comprises passive tooth (D1), auxiliary drive tooth (D2), described passive tooth (D1) and rear drive shaft are rotationally connected, and auxiliary drive tooth (D2) coordinates to form with rear drive shaft by keyway and is slidably connected;

Wherein the large fluted disc (B1-1) of step tooth (B1) is for engaging with the driving gear (A1) of power input shaft, the small tooth plate (B1-2) of step tooth (B1) engages for the driving fluted disc (D1-1) of the passive tooth (D1) with rear drive shaft, small tooth plate (B1-2) is also for engaging with the slide teeth (A2) on power input shaft simultaneously, described driving gear (B2) is for engaging with the top bar large fluted disc (A3-1) of tooth (A3) of power input shaft, driving gear (B3) is for engaging with the top bar small tooth plate (A3-2) of tooth (A3) of power input shaft, the large fluted disc (B4-1) of step tooth (B4) is for engaging with the driving gear (A4) of power input shaft, the small tooth plate (B4-2) of step tooth (B4) is for engaging with the driving gear (A5) of power input shaft,

Double plate tooth (C1) one of them fluted disc (C1-1) is for engaging with driving gear B2, double plate tooth (C1) another fluted disc (C1-2) for engaging with the driving fluted disc (D2-1) of auxiliary drive tooth (D2), described in the tooth (C2) that reverses gear engage with the driving gear B5 that reverses gear when reversing gear;

Wherein passive tooth (D1) also comprises a clutch wheel (D1-2), described driving fluted disc (D2) comprises a pinboard (D2-2), when described pinboard (D2-2) and clutch wheel (D1-2) combine, driving fluted disc (D1-1) and the rear drive shaft of passive tooth (D1) are coaxially fixed.

3. the gearbox of a kind of wheeled tractor as claimed in claim 2, it is characterized in that: described clutch wheel (D1-2) comprises the raised tooth that some annular arrays are arranged, the upper annular array of described pinboard (D2-2) is provided with some tooth engaged corresponding with raised tooth, by the combination of raised tooth and tooth engaged, passive tooth (D1) is fixed on rear drive shaft by driving fluted disc (D2).