CN215214591U - Six-shaft multifunctional steering wheel type tractor gearbox - Google Patents

Abstract

The utility model discloses a six-shaft multifunctional steering wheel type tractor gearbox, which comprises a box body, wherein an input shaft, a transmission shaft, an auxiliary variable speed shaft, a drive changing shaft and an output shaft are arranged in the box body; the input shaft is provided with a reverse gear driving gear and a two-third gear driving gear, the two-third gear driving gear is a duplicate gear, and the two-third gear driving gear comprises a second gear and a third gear; a first-gear driven gear, a second-gear driven gear, a speed reduction driving gear and a third-gear driven gear are arranged on the transmission shaft; the auxiliary speed change shaft is provided with an auxiliary speed change gear and a reduction driven gear, and the auxiliary speed change gear is a duplicate gear and comprises a speed change gearwheel and a speed change pinion; a front drive driving gear, a central transmission gear and a rear drive driving gear are arranged on the drive exchange shaft; the output shaft comprises a front drive output shaft and a rear drive output shaft, the front drive output shaft is provided with a front drive driven gear, and the rear drive output shaft is provided with a rear drive driven gear. The gearbox can select a front-drive mode, a rear-drive mode and a four-drive mode, and is simple in structure and beneficial to saving cost.

Description

Six-shaft multifunctional steering wheel type tractor gearbox

Technical Field

The utility model belongs to the technical field of mechanical transmission, concretely relates to six multi-functional steering wheel formula tractor gearboxes.

Background

The tractor is a power machine used for dragging and driving various matched machines and tools to complete agricultural field operation and transportation. According to the existing driving modes, the driving modes can be divided into a front wheel driving mode, a rear wheel driving mode and a four-wheel driving mode, each driving mode has own advantages and disadvantages, and the driving mode of the tractor is determined by connecting the output of a gearbox to a front wheel or a rear wheel. The farmland cultivated land and the road topography of China are complicated, different driving modes need to be selected in different terrains, the driving mode of the existing tractor is single, different driving modes can not be selected according to actual requirements, in addition, the transmission shafts of the existing tractor are large in quantity, the structure is complicated, and the cost is not reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a six multi-functional steering wheel formula tractor gearboxes are provided can realize forerunner's, rear-guard and four-wheel drive three kinds of drive methods and switch to simple structure is favorable to practicing thrift the cost.

In order to solve the problem, the utility model adopts the following technical scheme:

the six-shaft multifunctional steering wheel type tractor gearbox comprises a box body, wherein an input shaft, a transmission shaft, an auxiliary speed change shaft, a gear change shaft, an output shaft and a reverse gear shaft are arranged in the box body, a reverse gear driving gear and a second-third gear driving gear are arranged on the input shaft, the second-third gear driving gear is a duplicate gear, and the second-third gear driving gear comprises a second-gear driving gear and a third-gear driving gear; a first-gear driven gear, a second-gear driven gear, a speed reduction driving gear and a third-gear driven gear are arranged on the transmission shaft; the auxiliary speed change shaft is provided with an auxiliary speed change gear and a reduction driven gear, and the auxiliary speed change gear is a duplicate gear and comprises a speed change gearwheel and a speed change pinion; a front drive driving gear, a central transmission gear and a rear drive driving gear are arranged on the drive exchange shaft; the output shaft comprises a front drive output shaft and a rear drive output shaft, the front drive output shaft is provided with a front drive driven gear, and the rear drive output shaft is provided with a rear drive driven gear; the reverse gear shaft is provided with a reverse gear.

Wherein, the first reverse gear driving gear, the second third gear driving gear, the auxiliary speed change gear, the front driving gear and the rear driving gear can slide along the axis thereof, all the other gears are fixed on the shaft, a reverse gear driving gear, a second gear driving gear and a third gear driving gear are respectively and correspondingly meshed or disengaged with a first gear driven gear, a second gear driven gear and a third gear driven gear in a sliding mode, a speed change large gear is meshed or disengaged with the first gear driven gear in a sliding mode, a speed reduction driving gear is normally meshed with the speed reduction driven gear, a speed change small gear is normally meshed with a central transmission gear, a reverse gear is normally meshed with the first gear driven gear in a sliding mode, a reverse gear driving gear is meshed with the reverse gear in a sliding mode, a front drive driving gear, a front drive driven gear, a rear drive driving gear and a rear drive driven gear are normally meshed, and the front drive driving gear and the rear drive driving gear are respectively and fixedly connected with the central transmission gear in a sliding mode.

As a further improvement of the above technical solution:

one side of the speed reduction driven gear is fixed with a first gear ring, the first gear ring and the speed reduction driven gear are coaxially arranged, one end of the speed change pinion is slidably inserted into the first gear ring and is meshed with the first gear ring, two sides of the central transmission gear are provided with second gear rings, the second gear rings and the central transmission gear are coaxially arranged, and one ends of the front drive driving gear and the rear drive driving gear are slidably inserted into the second gear rings on the two sides respectively and are meshed with the second gear rings. Because the speed reduction driven gear and the central transmission gear are both gears fixed on the shaft where the speed reduction driven gear and the central transmission gear are located, when one end of the speed change pinion is inserted into the first gear ring or one ends of the front drive driving gear and the rear drive driving gear are inserted into the second gear ring, synchronous rotation with the speed reduction driven gear or the central transmission gear can be realized, and power is transmitted.

The reverse gear shaft is provided with a reverse gear which is a duplicate gear and comprises a reverse gear large gear and a reverse gear small gear, wherein the reverse gear small gear is normally meshed with a first gear driven gear, and the reverse gear driving gear can slide and is meshed with the reverse gear large gear, so that the tractor can conveniently back up.

The axial directions of the input shaft, the transmission shaft, the auxiliary variable speed shaft, the drive-changing shaft and the drive-changing shaft are in the same direction, and two ends of the input shaft, the transmission shaft, the auxiliary variable speed shaft, the drive-changing shaft and the drive-changing shaft are rotatably connected to two side walls of the box body; the transmission shaft is arranged at the side of the input shaft, the reverse gear shaft is arranged above the input shaft and the transmission shaft, the auxiliary variable-speed shaft is arranged below the input shaft and the transmission shaft, the drive-changing shaft is arranged below the auxiliary variable-speed shaft, the front drive output shaft and the rear drive output shaft are arranged below the drive-changing shaft, and the front drive output shaft and the rear drive output shaft respectively and rotatably penetrate through the side walls of the two sides of the box body, so that the structure is compact, and the occupied space is reduced.

The first reverse gear driving gear, the second third gear driving gear and the input shaft are connected through splines. The gear can move along the axial direction conveniently and rotates synchronously with the shaft when rotating.

The transmission ratio of the first-gear driven gear to the speed change large gear is smaller than that of the speed reduction driving gear to the speed reduction driven gear; the transmission ratio of a reverse gear driving gear to a first gear driven gear is greater than that of a second gear driving gear to a second gear driven gear; the transmission ratio of the second gear driving gear to the second gear driven gear is greater than that of the third gear driving gear to the third gear driven gear, so that the tractor has multiple gear speeds which can be adjusted, and the tractor is convenient to use in complex farmland.

The utility model has the advantages that:

the utility model discloses a six multi-functional steering wheel tractor gearboxes, through input shaft input power, power transmission through each gear, final output shaft output power, the forerunner driving gear, the back-drive driving gear respectively slidable ground and central drive gear fixed connection, thereby rotate in step with central drive gear, make power by forerunner output shaft and/or back-drive output shaft output, thereby realize the forerunner, the switching of three kinds of modes of back-drive and four-wheel drive, in order to be suitable for the practical application of steering wheel tractor, furthermore, this six multi-functional steering wheel tractor gearboxes have only adopted the input shaft, the transmission shaft, vice variable speed axle, trade the drive axle, the output shaft, six power shafts of reverse gear, it keeps off the fast selectable equally to have multiple output in current gearbox, but its structure is simpler, be favorable to practicing thrift the cost.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a schematic view of the transmission between the input shaft and the propeller shaft of fig. 1.

Fig. 4 is a schematic view of the transmission structure between the input shaft, the transmission shaft and the reverse gear shaft in fig. 1.

FIG. 5 is a schematic view of the transmission arrangement between the reverse shaft, the propeller shaft and the sub-transmission shaft of FIG. 1.

Fig. 6 is a schematic view of the transmission between the sub-transmission shafts and the transmission shaft in fig. 1.

FIG. 7 is a schematic view of the transmission between the swashplate, the forward drive output shaft, and the reverse drive output shaft of FIG. 1.

Fig. 8 is a schematic view of the structure of the reduction driven gear in fig. 6.

Reference numbers in the figures: 1. a box body; 2. an input shaft; 21. a reverse drive gear; 22. a second and third gear driving gear; 221. a second gear driving gear; 222. a third gear drive gear; 3. a drive shaft; 31. a first-gear driven gear; 32. a second-gear driven gear; 33. a reduction drive gear; 34. a third-gear driven gear; 4. a reverse gear shaft; 41. a reverse gear; 411. a reverse gear pinion; 412. reversing the gear wheel; 5. a secondary speed change shaft; 51. a sub transmission gear; 511. a variable speed gear wheel; 512. a shift pinion gear; 52. a reduction driven gear; 6. replacing a driving shaft; 61. a front drive gear; 62. a central drive gear; 63. a rear drive gear; 7. a front drive output shaft; 71. a front drive driven gear; 8. a rear drive output shaft; 81. a rear drive driven gear; 9. a first ring gear; 10. a second ring gear.

Detailed Description

As shown in fig. 1 and 2, the six-shaft multifunctional steering wheel type tractor gearbox of the embodiment comprises a box body 1, wherein an input shaft 2, a transmission shaft 3, an auxiliary speed change shaft 5, a drive change shaft 6, an output shaft and a reverse gear shaft 4 are arranged in the box body 1. In order to make the structure of the gearbox more compact and save occupied space, each transmission rotating shaft adopts the following spatial position arrangement, the axial directions of the input shaft 2, the transmission shaft 3, the auxiliary speed changing shaft 5, the drive changing shaft 6 and the reverse gear shaft 4 are in the same direction, and two ends of the input shaft are rotatably connected with two side walls of the box body 1; the transmission shaft 3 is arranged at the side of the input shaft 2, the reverse gear shaft 4 is arranged above the input shaft 2 and the transmission shaft 3, the auxiliary variable speed shaft 5 is arranged below the input shaft 2 and the transmission shaft 3, the drive change shaft 6 is arranged below the auxiliary variable speed shaft 5, and the front drive output shaft 7 and the rear drive output shaft 8 are arranged below the drive change shaft 6 and respectively and rotatably penetrate through the side walls of the two sides of the box body 1. The input shaft 2, the transmission shaft 3, the auxiliary variable speed shaft 5, the drive shaft 6 and the output shaft are sequentially transmitted through the gears arranged on the input shaft, the transmission shaft 3, the auxiliary variable speed shaft 5, the drive shaft 6 and the output shaft in transmission, and the difference in reverse gear lies in that: the input shaft 2 is first driven to the reverse shaft 4 and then to the propeller shaft 3.

As shown in fig. 3, the input shaft 2 is provided with a reverse gear driving gear 21 and a second and third gear driving gear 22, the second and third gear driving gear 22 is a duplicate gear, the second and third gear driving gear 22 includes a second gear driving gear 221 and a third gear driving gear 222, the second gear driving gear 221 and the third gear driving gear 222 are coaxial and spaced apart from each other by a certain distance, and the two gear driving gear 221 and the third gear driving gear 222 are fixedly connected into a whole through a sleeve. The transmission shaft 3 is provided with a first-gear driven gear 31, a second-gear driven gear 32, a reduction driving gear 33 and a third-gear driven gear 34. The input shaft 2 transmits power to the transmission shaft 3 through engagement of a reverse drive gear 21 with the first-speed driven gear 31, engagement of a second drive gear 221 with the second-speed driven gear 32, or engagement of a third drive gear 222 with the third driven gear 34. Wherein, the transmission ratio of the first reverse gear driving gear 21 to the first gear driven gear 31 is greater than the transmission ratio of the second gear driving gear 221 to the second gear driven gear 32; the gear ratio of the second driving gear 221 to the second driven gear 32 is greater than the gear ratio of the third driving gear 222 to the third driven gear 34. So that the transmission shaft 3 has three different output rotation speed selections when the input shaft 2 inputs the same rotation speed.

As shown in fig. 4, the reverse shaft 4 is provided with a reverse gear 41, the reverse gear 41 is a duplicate gear, the reverse gear 41 includes a reverse gear gearwheel 412 and a reverse gear pinion 411, wherein the reverse gear pinion 411 is constantly engaged with the first gear driven gear 31, and a reverse gear driving gear 21 is slidably engaged with the reverse gear gearwheel 412, so that the power of the input shaft 2 is transmitted to the transmission shaft 3 through the reverse shaft 4, and the reverse rotation of the transmission shaft 3 is realized.

As shown in fig. 5, the sub-transmission shaft 5 is provided with a sub-transmission gear 51 and a reduction driven gear 52, the sub-transmission gear 51 is a duplicate gear, the sub-transmission gear 51 includes a large transmission gear 511 and a small transmission gear 512, the large transmission gear 511 and the small transmission gear 512 are coaxial and spaced apart from each other, and the two are fixedly connected together by a sleeve. By the engagement of the first-speed driven gear 31 and the large speed-change gear 511, or by the engagement of the reduction driving gear 33 and the reduction driven gear 52, the transmission shaft 3 has two different rotational speed transmissions to the sub-transmission shaft 5, i.e., the output has a high-speed stage and a low-speed stage. The transmission ratio of the first-gear driven gear 31 to the change gear gearwheel 511 is smaller than the transmission ratio of the reduction driving gear 33 to the reduction driven gear 52.

As shown in fig. 6 to 8, the shift shaft 6 is provided with a front drive gear 61, a central transmission gear 62, and a rear drive gear 63, and the sub-transmission shaft 5 and the shift shaft 6 are engaged and driven by a transmission pinion 512 and the central transmission gear 62. The output shaft comprises a front drive output shaft 7 and a rear drive output shaft 8, wherein the front drive output shaft 7 is provided with a front drive driven gear 71, and the rear drive output shaft 8 is provided with a rear drive driven gear 81. The speed change pinion 512, the front drive driving gear 61 and the rear drive driving gear 63 are only sleeved outside the shaft on which the speed change pinion is arranged and are not fixedly connected with the shaft on which the speed change pinion is arranged. A first gear ring 9 is fixed on one side of the speed reduction driven gear 52, the first gear ring 9 and the speed reduction driven gear 52 are coaxially arranged, inner teeth meshed with outer teeth of the speed change pinion 512 are arranged in an inner ring of the first gear ring 9, one end of the speed change pinion 512 is slidably inserted into the first gear ring 9 and is meshed with the first gear ring 9, second gear rings 10 are arranged on two sides of the central transmission gear 62, the second gear rings 10 are coaxially arranged with the central transmission gear 62, one ends of the front drive driving gear 61 and the rear drive driving gear 63 are slidably inserted into the second gear rings 10 on two sides respectively and are meshed with the second gear rings 10, the structure of the second gear rings 10 is the same as that of the first gear rings 9, and the two gear rings are different in size.

For high and low gears: when the first-speed driven gear 31 is in meshing transmission with the shift gear 511, the first-speed driven gear 31 is in high-speed transmission, and when the sub-transmission gear 51 slides so that one end of the shift pinion 512 is inserted into the first ring gear 9, the first-speed driven gear 31 is disengaged from the shift gear 511, and the shift pinion 512 is fixedly connected to the reduction driven gear 52, and both have synchronous rotation speeds, and the power of the reduction driving gear 33 is transmitted to the shift pinion 512 through the reduction driven gear 52, so that the low-speed transmission is performed.

The gear meshing relationship in each shaft is as follows: a reverse gear drive gear 21, a second and third gear 22, a counter gear 51, a front drive gear 61 and a rear drive gear 63 are slidable along their axes, and a shift fork (not shown) for shifting them in an axial direction is connected to the gears. All the other gears are fixed on the shaft, a reverse driving gear 21, a second driving gear 221 and a third driving gear 222 are respectively and correspondingly meshed or disengaged with the first driven gear 31, the second driven gear 32 and the third driven gear 34 in a sliding mode, the large speed change gear 511 is meshed or disengaged with the first driven gear 31 in a sliding mode, the small speed reduction gear 33 is normally meshed with the small speed reduction gear 52, the small speed change gear 512 is normally meshed with the central transmission gear 62, the reverse gear 41 is normally meshed with the first driven gear 31, the reverse driving gear 21 is meshed with the reverse gear 41 in a sliding mode, the front driving gear 61, the front driving gear 71, the rear driving gear 63 and the rear driving gear 81 are normally meshed, and the front driving gear 61 and the rear driving gear 63 are respectively and fixedly connected with the central transmission gear 62 in a sliding mode. The reverse gear driving gear 21, the second and third gear driving gears 22 are connected with the input shaft 2 through splines. The transmission shaft 3 and the output shaft are also fixed with the gear thereon by adopting spline connection.

The front drive output shaft 7 and the rear drive output shaft 8 of the six-shaft multifunctional steering wheel type tractor gearbox are used for being connected and installed on a drive axle of front wheels and rear wheels of a tractor, the output of the front drive output shaft 7 and the output of the rear drive output shaft 8 are controlled, so that the front drive, the rear drive or the four-wheel drive of the tractor is controlled, in the working process, a front drive driving gear 61 and a rear drive driving gear 63 are shifted through a shifting fork (not shown in the figure) to be respectively inserted into second gear rings 10 on two sides of a central transmission gear 62 and fixed with the central transmission gear 62, when the front drive driving gear 61 is inserted into the second gear ring 10 on one side, the front drive output shaft 7 outputs power, and when the rear drive driving gear 63 is inserted into the second gear ring 10 on the other side, the rear drive output shaft 8 outputs power.

Claims (6)

1. Six multi-functional steering wheel formula tractor gearboxes, including box (1), its characterized in that: the inside of the box body (1) is provided with

The input shaft (2), the input shaft (2) is equipped with a reverse gear driving gear (21), two third gear driving gears (22), the two third gear driving gears (22) are duplicate gears, the two third gear driving gears (22) include two second gear driving gears (221) and three third gear driving gears (222);

the transmission shaft (3) is provided with a first-gear driven gear (31), a second-gear driven gear (32), a speed reduction driving gear (33) and a third-gear driven gear (34);

the auxiliary speed change gear (5), the auxiliary speed change gear (51) and the reduction driven gear (52) are installed on the auxiliary speed change shaft (5), the auxiliary speed change gear (51) is a duplicate gear, and the auxiliary speed change gear (51) comprises a speed change large gear (511) and a speed change small gear (512);

the gear shifting shaft (6), wherein a front drive driving gear (61), a central transmission gear (62) and a rear drive driving gear (63) are arranged on the gear shifting shaft (6);

the output shaft comprises a front drive output shaft (7) and a rear drive output shaft (8), the front drive output shaft (7) is provided with a front drive driven gear (71), and the rear drive output shaft (8) is provided with a rear drive driven gear (81);

the reverse gear shaft (4), the reverse gear shaft (4) is provided with a reverse gear (41);

wherein, the first reverse gear driving gear (21), the second third gear driving gear (22), the auxiliary speed change gear (51), the front drive driving gear (61) and the rear drive driving gear (63) can slide along the shaft, other gears are fixed on the shaft, the first reverse gear driving gear (21), the second gear driving gear (221) and the third gear driving gear (222) can respectively slide and correspondingly engage or disengage with the first gear driven gear (31), the second gear driven gear (32) and the third gear driven gear (34), the gear change gearwheel (511) can slide and engage or disengage with the first gear driven gear (31), the speed reduction driving gear (33) is normally engaged with the speed reduction driven gear (52), the gear change pinion (512) is normally engaged with the central driving gear (62), the reverse gear (41) is normally engaged with the first gear driven gear (31), the first reverse gear driving gear (21) can slide and engage with the reverse gear (41), the front driving gear (61), the front driven gear (71), the rear driving gear (63) and the rear driven gear (81) are all in constant meshing, and the front driving gear (61) and the rear driving gear (63) are respectively and fixedly connected with the central transmission gear (62) in a sliding mode.

2. The six-axis multi-function steering wheel tractor transmission of claim 1, wherein: a first gear ring (9) is fixed on one side of the speed reduction driven gear (52), the first gear ring (9) and the speed reduction driven gear (52) are coaxially arranged, one end of a speed change pinion (512) is slidably inserted into the first gear ring (9) and is meshed with the first gear ring (9), second gear rings (10) are arranged on two sides of a central transmission gear (62), the second gear rings (10) and the central transmission gear (62) are coaxially arranged, and one ends of a front driving gear (61) and a rear driving gear (63) are slidably inserted into the second gear rings (10) on two sides respectively and are meshed with the second gear rings (10).

3. The six-axis multi-function steering wheel tractor transmission of claim 1, wherein: the reverse gear (41) is a duplicate gear, the reverse gear (41) comprises a reverse gear large gear (412) and a reverse gear small gear (411), wherein the reverse gear small gear (411) is normally meshed with the first-gear driven gear (31), and the reverse gear driving gear (21) can be meshed with the reverse gear large gear (412) in a sliding mode.

4. The six-axis multi-function steering wheel tractor transmission of claim 1, wherein: the axial directions of the input shaft (2), the transmission shaft (3), the auxiliary variable speed shaft (5), the drive changing shaft (6) and the drive changing shaft (6) are in the same direction, and two ends of the drive changing shaft are rotatably connected to two side walls of the box body (1); the side at input shaft (2) is established in transmission shaft (3), top between input shaft (2) and transmission shaft (3) is located in reverse gear (4), below between input shaft (2) and transmission shaft (3) is located in auxiliary variable speed axle (5), the below of auxiliary variable speed axle (5) is located in drive axle (6), the below of drive axle (6) is located in forerunner's output shaft (7) and rear-wheel's output shaft (8), forerunner's output shaft (7) and rear-wheel's output shaft (8) rotationally run through box (1) both sides lateral wall respectively.

5. The six-axis multi-function steering wheel tractor transmission of claim 1, wherein: the first reverse gear driving gear (21), the second third gear driving gear (22) and the input shaft (2) are in splined connection.

6. The six-axis multi-function steering wheel tractor transmission of claim 1, wherein: the transmission ratio of the first-gear driven gear (31) to the speed change large gear (511) is smaller than that of the speed reduction driving gear (33) to the speed reduction driven gear (52); the transmission ratio of the first reverse gear driving gear (21) to the first gear driven gear (31) is greater than that of the second reverse gear driving gear (221) to the second gear driven gear (32); the transmission ratio of the second-gear driving gear (221) to the second-gear driven gear (32) is larger than that of the third-gear driving gear (222) to the third-gear driven gear (34).

Images