CN209987744U

CN209987744U - Direct-connection four-wheel drive system of straight-head tractor

Info

Publication number: CN209987744U
Application number: CN201920764122.6U
Authority: CN
Inventors: 潘伟才
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-01-24
Anticipated expiration: 2029-05-27

Abstract

The utility model provides a direct-connected four-wheel drive system of a straight-head tractor, which relates to the technical field of agricultural machinery and the design and manufacture of parts thereof, and solves the problems that the wheel diameters of front and rear wheels of the existing straight-head tractor are different, and the front and rear wheels are difficult to ensure that the front and rear wheel speeds are completely consistent during four-wheel drive, thereby generating internal consumption and ensuring that the driving force can not be exerted to the maximum extent; at the same time, tire wear is exacerbated; and the front axle and the rear axle of traditional tractor pass through frame fixed connection and are in the same place, consequently, cause turning radius big, be unfavorable for machines operation scheduling problem, the utility model discloses a drive mechanism to straight hair style tractor improves, and the optimization improvement of adaptability has been done to the structure of transmission case (2) and drive mechanism's installation chassis (8) to the focus, has improved the stability of power transmission and turned to, reduces the impact of engine output to drive mechanism and frame coupling mechanism, prolongs its life, and entire system structure is simple relatively, easy maintenance.

Description

Direct-connection four-wheel drive system of straight-head tractor

Technical Field

The utility model relates to a manufacturing and designing technical field of agricultural machine and spare part thereof, concretely relates to straight head formula tractor directly link four-wheel drive system.

Background

The conventional straight head type transportation type tractor has the advantages that the whole structure adopts rear drive, the steering gear controls the front wheels to steer, and the four-wheel hydraulic brake has higher adaptability than the original tractor, has strong climbing capability and safe and reliable brake, and can be widely used for loading and transporting in rural areas, suburbs, mountain areas and hilly areas. The main structural components are as follows: the device comprises a diesel engine, a clutch assembly, a gearbox, electrical equipment, a direction indicator assembly, a cab assembly, a rear axle assembly, a tool box assembly, a bottom plate assembly, a hydraulic system assembly, a control system assembly, a straightening rod assembly, a wheel protective cover assembly, a front axle assembly, a front suspension assembly, a front frame assembly, a carriage assembly and a transmission shaft assembly. The device can be used for transporting various goods and loading agricultural crops, has large power, large loading space and strong power, and can quickly and conveniently carry out the operation of transport machinery. The device can be suitable for operators with different degrees to operate at different positions, and can meet the operation characteristics of different plateaus, mountainous regions and the like.

However, the diameters of the front and rear wheels of the existing straight-head tractor are different, and when a four-wheel drive mode is adopted, the structural design limitation makes the front and rear wheels difficult to ensure that the front and rear wheels are completely consistent, so that internal consumption is generated, the driving force cannot be exerted to the maximum extent, and meanwhile, tire abrasion is aggravated. Secondly, the front axle and the rear axle of the traditional tractor are fixedly connected together through a frame, so that the turning radius is large, and the operation of machines is not facilitated.

Disclosure of Invention

For solving the defect that exists among the background art, the utility model discloses a straight head formula tractor directly links four-wheel drive system improves the drive power of tractor and the flexibility that turns to.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a direct-connected four-wheel drive system of a straight-head tractor comprises a diesel engine 1, a transmission case 2, a clutch assembly 3, a gearbox 4, a transfer case 5, a front axle assembly 6 and a rear axle assembly 7, wherein the direct-connected four-wheel drive system is integrally arranged on an underframe 8; the diesel engine 1 is arranged obliquely above the transmission case 2, an output shaft 2-8 of the diesel engine is connected with belt pulleys 2-7 and then is connected with an input shaft 2-4 of the transmission case 2 through a belt, and meanwhile, the input shaft 2-4 of the transmission case 2 is also connected with a belt of a driving motor; the output shafts 2-8 of the transmission case 2 are sequentially connected with the clutch assembly 3 and the gear box 4 and then respectively connected with the front axle assembly 6 and the rear axle assembly 7 through the transfer case 5;

wherein, a front transmission shaft 5-1, a ball bearing 5-2, an intermediate bearing 5-3 and a rear transmission shaft 5-4 are sequentially connected between the transfer case 5 and the rear axle assembly 7, and universal joints are arranged between the front transmission shaft 5-1 and the gear box 4, between the intermediate bearing 5-3 and the rear transmission shaft 5-4 and between the rear transmission shaft 5-4 and the rear axle assembly 7 for connection; a front axle transmission shaft 6-1 and a universal joint are arranged between the transfer case 5 and the front axle assembly 6.

The chassis 8 is divided into two parts, wherein the front part 8-1 is used for mounting a diesel engine 1, a transmission case 2, a clutch assembly 3, a gearbox 4, a transfer case 5 and a front axle assembly 6, and the rear part 8-2 is used for mounting a front transmission shaft 5-1, a ball bearing 5-2, an intermediate bearing 5-3 and a rear transmission shaft 5-4 which are arranged between the transfer case 5 and a rear axle assembly 7; the front part 8-1 and the rear part 8-2 are connected through a steering connector 9.

A lubricating oil filling pipe is arranged on a top plate of a box body of the transmission box 2, the top plate is connected to side plates 2-3 of the box body through bolts, the box body is integrally in a step shape, namely the width of the box body is consistent, the length of the lower part of the box body exceeds that of the upper part of the box body, and two groups of opposite bearing end covers are respectively arranged on a front end plate 2-1 and a back plate 2-2 of the lower part of the box body and on the two side; an input shaft 2-4 and a transition shaft 2-5 are arranged between two side plates 2-3 of the box body, wherein the outer end of the input shaft 2-4 penetrates through a bearing end cover on a back plate 2-2 at the lower part of the box body, the inner end is sleeved in a bearing arranged on the opposite side plate 2-3 at the upper part of the box body and is sleeved with a main transmission gear 2-6, and the outer end penetrates through the bearing end cover and is connected with a belt pulley 2-7; an output shaft 2-8 is arranged between a front end plate 2-1 and a back plate 2-2 at the lower part of the box body, the outer end of the output shaft 2-8 penetrates through a bearing end cover on the back plate 2-2, and the inner end of the output shaft is sleeved in the bearing end cover on the front end plate 2-1.

The transition shaft 2-5 is arranged below the input shaft 2-4, one side of the input shaft 2-4, which is sleeved with the main transmission gear 2-6, of the box body, the transition shaft 2-5 is sleeved with the auxiliary transmission gear 2-9 meshed with the main transmission gear 2-6, and the other end of the transition shaft 2-5 is sleeved with the rolling bearing and then is positioned on the inner side of the front end plate 2-1; the middle part of the transition shaft 2-5 is provided with a conical transmission gear 2-10, and a driven conical gear 2-11 vertically meshed with the conical transmission gear 2-10, the driven conical gear 2-11 is fixedly connected with an output shaft 2-8, and the outer end of the output shaft 2-8 penetrates through a bearing end cover on the back plate 2-2 and is connected with the clutch assembly 3.

The steering connector 9 comprises a front base 9-1, a front base 9-2 and a connecting shaft 9-3, wherein the front base 9-1 is fixed on a cross beam at the end part of the front part 8-1 and comprises an elastic base 9a, a base plate 9b, a vertical limiting plate 9c and a horizontal limiting plate 9d, the structure of the rear base 9-2 is consistent with that of the front base 9-1, and the two are arranged by taking a longitudinal section at the midpoint of the connecting shaft 9-3 in the length direction as a symmetrical plane and taking the longitudinal section as a mirror image.

The elastic base 9a comprises a sleeve 9e, an elastic body and a head 9f, wherein the bottom of the head 9f is connected with the elastic body to seal the elastic body in the sleeve 9e, and an open end cover is arranged at the end part of the sleeve 9e, so that the front part of the head 9f can extend out of the sleeve 9e, and the bottom of the head 9f cannot be separated from the sleeve 9 e.

The vertical limiting plates 9c are arranged at the upper part and the lower part and are fixed at the upper edge and the lower edge of the base plate 9b to prevent the connecting shaft 9-3 from moving up and down too much; the horizontal limiting plates 9d are arranged into a left block and a right block and are fixed at the left edge and the right edge of the base plate 9b, so that the connecting shaft 9-3 is prevented from moving leftwards and rightwards too much.

And a bolt connecting seat 9g is arranged on the base plate 9b and is fixedly connected with the end cross beam through bolts.

The standard parts are all universal parts in the field of tractors; the sleeve joint means that the connection is carried out by adopting an interference fit and a tensioning sleeve; the term "fixedly connected" means that the connecting parts do not move relative to each other in a normal operating state.

Advantageous effects

The utility model discloses a drive mechanism to straight hair style tractor improves, and the optimization improvement of adaptability has been done to the structure of transmission case and drive mechanism's installation chassis to the focus, has improved the stability of power transmission and turn to, reduces engine output and to drive mechanism and frame connection mechanism's impact, prolongs its life, and the entire system structure is simple relatively, easy maintenance.

Drawings

FIG. 1 is a schematic diagram of the structure of a four-wheel drive system according to the present application.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a schematic structural diagram of a chassis in the four-wheel drive system according to the present application.

Fig. 4 is a top view of fig. 3.

Fig. 5 is a schematic view of the structure of the transmission case.

Fig. 6 is a cross-sectional top view of fig. 5.

Fig. 7 is a schematic structural view of the front base.

Fig. 8 is a cut-away view of the resilient mount.

The device comprises a diesel engine 1, a transmission case 2, a front end plate 2-1, a back plate 2-2, side plates 2-3, an input shaft 2-4, a transition shaft 2-5, a main transmission gear 2-6, a belt pulley 2-7, an output shaft 2-8, an auxiliary transmission gear 2-9, a conical transmission gear 2-10, a driven conical gear 2-11, a clutch assembly 3, a gear box 4, a transfer case 5, a front transmission shaft 5-1, a ball bearing 5-2, an intermediate bearing 5-3, a rear transmission shaft 5-4, a front axle assembly 6, a front axle transmission shaft 6-1, a rear axle assembly 7, a chassis 8, a front part 8-1, a rear part 8-2, a steering connector 9, a front base 9-1, a rear base 9-2, a connecting shaft 9-3, an elastic base 9a, a rear axle assembly 9, a rear axle assembly and a rear, Base plate 9b, perpendicular limiting plate 9c, horizontal limiting plate 9d, sleeve 9e, end 9f, bolt connecting seat 9 g.

Detailed Description

As shown in fig. 1-8, a direct-connected four-wheel drive system of a straight-head tractor comprises a diesel engine 1, a transmission case 2, a clutch assembly 3, a gearbox 4, a transfer case 5, a front axle assembly 6 and a rear axle assembly 7, wherein the direct-connected four-wheel drive system is integrally installed on an underframe 8; the diesel engine 1 is arranged obliquely above the transmission case 2, an output shaft 2-8 of the diesel engine is connected with belt pulleys 2-7 and then is connected with an input shaft 2-4 of the transmission case 2 through a belt, and meanwhile, the input shaft 2-4 of the transmission case 2 is also connected with a belt of a driving motor; the output shafts 2-8 of the transmission case 2 are sequentially connected with the clutch assembly 3 and the gear box 4 and then respectively connected with the front axle assembly 6 and the rear axle assembly 7 through the transfer case 5.

Claims

1. A direct-connection four-wheel drive system of a straight-head tractor comprises a diesel engine (1), a transmission case (2), a clutch assembly (3), a gearbox (4), a transfer case (5), a front axle assembly (6) and a rear axle assembly (7), and is characterized in that the direct-connection four-wheel drive system is integrally arranged on an underframe (8); the diesel engine (1) is arranged obliquely above the transmission case (2), an output shaft (2-8) of the diesel engine is connected with a belt pulley (2-7) and then is connected with an input shaft (2-4) of the transmission case (2) through a belt, and meanwhile, the input shaft (2-4) of the transmission case (2) is also connected with a belt of a driving motor; an output shaft (2-8) of the transmission case (2) is sequentially connected with the clutch assembly (3) and the gearbox (4) and then respectively connected with a front axle assembly (6) and a rear axle assembly (7) through a transfer case (5);

wherein a front transmission shaft (5-1), a ball bearing (5-2), an intermediate bearing (5-3) and a rear transmission shaft (5-4) are sequentially connected between the transfer case (5) and the rear axle assembly (7), and universal joints are arranged between the front transmission shaft (5-1) and the gearbox (4), between the intermediate bearing (5-3) and the rear transmission shaft (5-4) and between the rear transmission shaft (5-4) and the rear axle assembly (7) for connection; a front axle transmission shaft (6-1) and a universal joint are arranged between the transfer case (5) and the front axle assembly (6) for connection;

the chassis (8) is divided into two parts, the front part (8-1) is used for mounting a diesel engine (1), a transmission case (2), a clutch assembly (3), a gearbox (4), a transfer case (5) and a front axle assembly (6), and the rear part (8-2) is used for mounting a front transmission shaft (5-1), a ball bearing (5-2), an intermediate bearing (5-3) and a rear transmission shaft (5-4) which are arranged between the transfer case (5) and the rear axle assembly (7); the front part (8-1) is connected with the rear part (8-2) through a steering connector (9).

2. The direct-connected four-wheel drive system of the straight-head tractor according to claim 1, characterized in that a lubricating oil filling pipe is arranged on a top plate of a box body of the transmission box (2), the top plate is connected to side plates (2-3) of the box body through bolts, the box body is integrally stepped, namely the width of the box body is consistent, the length of the lower part of the box body exceeds that of the upper part of the box body, and two groups of opposite bearing end covers are respectively arranged on a front end plate (2-1) and a back plate (2-2) of the lower part of the box body and two side plates (2-3); an input shaft (2-4) and a transition shaft (2-5) are arranged between two side plates (2-3) of the box body, wherein the outer end of the input shaft (2-4) penetrates through a bearing end cover on a back plate (2-2) at the lower part of the box body, the inner end of the input shaft is sleeved in a bearing arranged on the opposite side plate (2-3) at the upper part of the box body and is sleeved with a main transmission gear (2-6), and the outer end of the input shaft penetrates through the bearing end cover and is connected with a belt pulley (2-7); an output shaft (2-8) is arranged between a front end plate (2-1) and a back plate (2-2) at the lower part of the box body, the outer end of the output shaft (2-8) penetrates through a bearing end cover on the back plate (2-2), and the inner end of the output shaft is sleeved in the bearing end cover on the front end plate (2-1); the transition shaft (2-5) is arranged below the input shaft (2-4), one side of a box body of the input shaft (2-4) which is sleeved with the main transmission gear (2-6) is sleeved with the transition shaft (2-5), an auxiliary transmission gear (2-9) which is meshed with the main transmission gear (2-6) is sleeved with the transition shaft (2-5), and the other end of the transition shaft (2-5) is positioned at the inner side of the front end plate (2-1) after being sleeved with a rolling bearing; the middle part of the transition shaft (2-5) is provided with a conical transmission gear (2-10), and is provided with a driven conical gear (2-11) vertically meshed with the conical transmission gear (2-10), the driven conical gear (2-11) is fixedly connected with an output shaft (2-8), and the outer end of the output shaft (2-8) penetrates through a bearing end cover on the back plate (2-2) and is connected with the clutch assembly (3).

3. The direct-connected four-wheel drive system of the straight-head tractor according to claim 1, characterized in that the steering connector (9) comprises a front base (9-1), a rear base (9-2) and a connecting shaft (9-3), wherein the front base (9-1) is fixed on an end cross beam of the front part (8-1) and comprises an elastic base (9 a), a base plate (9 b), a vertical limiting plate (9 c) and a horizontal limiting plate (9 d), the rear base (9-2) is consistent with the front base (9-1) in structure, and the two are arranged opposite to each other in a mirror image mode by taking a longitudinal section at the midpoint of the connecting shaft (9-3) in the length direction as a symmetrical plane.

4. The direct-connected four-wheel drive system of the straight-head tractor according to claim 3, characterized in that the elastic base (9 a) comprises a sleeve (9 e), an elastic body and a head (9 f), the bottom of the head (9 f) is connected with the elastic body and sealed in the sleeve (9 e), and the end part of the sleeve (9 e) is provided with an open end cover, so that the front part of the head (9 f) can extend out of the sleeve (9 e) without the bottom falling out of the sleeve (9 e).

5. The direct-connected four-wheel drive system of the straight-head tractor according to claim 3, wherein the vertical limiting plates (9 c) are arranged at the upper part and the lower part and fixed at the upper edge and the lower edge of the base plate (9 b) to prevent the connecting shaft (9-3) from moving up and down too much; the horizontal limiting plates (9 d) are arranged into a left block and a right block and are fixed at the left edge and the right edge of the base plate (9 b) to prevent the connecting shaft (9-3) from moving leftwards and rightwards too much.

6. The direct-connected four-wheel drive system of the straight-head tractor as claimed in claim 3, wherein the base plate (9 b) is provided with a bolt connecting seat (9 g) which is fixedly connected with the end cross beam through a bolt.