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CN-224229189-U - Power gear shifting gearbox of chassis of agricultural tractor

CN224229189UCN 224229189 UCN224229189 UCN 224229189UCN-224229189-U

Abstract

The utility model discloses a power shift gearbox of an agricultural tractor chassis, which comprises a first splice shell, a second splice shell and a third splice shell, wherein the first splice shell, the second splice shell and the third splice shell are sequentially connected to form a shell of the gearbox, a first transmission shaft, a first hydraulic wet clutch, a second transmission shaft and a second hydraulic wet clutch are arranged in the second splice shell, the front ends of the first transmission shaft, the first hydraulic wet clutch, the second transmission shaft and the second hydraulic wet clutch are connected with the first splice shell, the rear ends of the first transmission shaft and the second transmission shaft are inserted into the third splice shell, the second transmission shaft is arranged above the first transmission shaft, and the first hydraulic wet clutch and the second hydraulic wet clutch are respectively arranged on two sides of the first transmission shaft and the second transmission shaft.

Inventors

  • LIU ENFENG
  • ZHANG XIANG
  • YIN LIGUO
  • KONG HAO

Assignees

  • 湖北神牛农业机械有限公司

Dates

Publication Date
20260512
Application Date
20250715

Claims (10)

  1. 1. The power shift gearbox of the agricultural tractor chassis comprises a first splicing shell (5), a second splicing shell (6) and a third splicing shell (7), and is characterized in that the first splicing shell (5), the second splicing shell (6) and the third splicing shell (7) are sequentially connected to form a shell of the gearbox, a first transmission shaft (1), a first hydraulic wet clutch (2), a second transmission shaft (3) and a second hydraulic wet clutch (4) are arranged in the second splicing shell (6), the front ends of the first transmission shaft (1), the first hydraulic wet clutch (2), the second transmission shaft (3) and the second hydraulic wet clutch (4) are connected with the first splicing shell (5), the rear ends of the first transmission shaft (1) and the second transmission shaft (3) are inserted into the third splicing shell (7), the second transmission shaft (3) is arranged above the first transmission shaft (1), and the first hydraulic wet clutch (2) and the second hydraulic wet clutch (4) are respectively arranged on two sides of the first transmission shaft (1) and the second transmission shaft (3).
  2. 2. The power shift gearbox of an agricultural tractor chassis according to claim 1, wherein the first transmission shaft (1) comprises a front shaft (01) and a rear shaft (02) which are concentric, a gap is arranged between the front shaft (01) and the rear shaft (02), the first transmission shaft (1) is sequentially provided with a first gear (101), a first second gear (102), a first third gear (103) and a first fourth gear (104) from front to back, the first gear (101) is arranged on the front shaft (01), the first gear (102), the first third gear (103) and the first fourth gear (104) are arranged on the rear shaft (02), a second gear (201), a second gear (202) and a second third gear (203) are arranged on the rotating shaft of the first hydraulic wet clutch (2) from front to back, the second gear (201) and the second gear (202) are respectively meshed with the first gear (101) and the second gear (202), the first gear (203) can be meshed with the second gear (203) and the first wet clutch (203) are rotatably controlled by the first gear (301) and the second gear (203), and the second gear (203) is meshed with the first gear (203) and the second gear (203) which is meshed with the second gear (203) respectively The novel hydraulic wet clutch comprises a third gear (302), a third gear (303) and a third gear (304), wherein the third gear (303) and the third gear (304) are integrated, the first gear (104) is meshed with the third gear (303), a fourth gear (401), a fourth gear (402) and a fourth gear (403) are sequentially arranged on a rotating shaft of the second hydraulic wet clutch (4) from front to back, the fourth gear (401) is meshed with the first gear (101), the fourth gear (402) is meshed with the first gear (103), the fourth gear (403) is meshed with the third gear (304), and the second hydraulic wet clutch (4) can control rotation of the fourth gear (402) and the fourth gear (403).
  3. 3. The power shift gearbox of an agricultural tractor chassis according to claim 2, wherein a first bearing seat (105) and a second bearing seat (106) are sequentially arranged on a rear shaft (02) of the first transmission shaft (1) along the rear of a first fourth gear (104), the first bearing seat (105) and the second bearing seat (106) are respectively connected with a second splice case (6) and a third splice case (7), a transmission joint (108) is arranged at the front end of the front shaft (01), the transmission joint (108) is used for being connected with the power output end of an engine, a first oil seal seat (107) is arranged on the front shaft (01) along the rear of the transmission joint (108), and the first oil seal seat (107) is used for being connected with the first splice case (5).
  4. 4. The power shift gearbox of an agricultural tractor chassis according to claim 2, wherein the front ends of the first hydraulic wet clutch (2) and the second hydraulic wet clutch (4) are respectively provided with a second oil seal seat (204), and the main bodies of the first hydraulic wet clutch (2) and the second hydraulic wet clutch (4) are arranged inside the first assembly box.
  5. 5. A power shift gearbox for an agricultural tractor chassis according to claim 2, wherein the second transmission shaft (3) is provided with a joint sleeve (307) on a third No. two gear (302), the joint sleeve (307) is movable onto a third No. one gear (301), a third bearing seat (305) and a fourth bearing seat (306) are sequentially arranged behind the third No. two gear (302), and the third bearing seat (305) and the fourth bearing seat (306) are respectively connected with the second splicing shell (6) and the third splicing shell (7).
  6. 6. The power shift gearbox of an agricultural tractor chassis according to claim 1, wherein three mounting holes (51) are formed in the inner side of the first splicing shell (5) and used for enabling rotating shafts of the first transmission shaft (1), the first hydraulic wet clutch (2) and the second hydraulic wet clutch (4) to pass through, a connecting table (52) is arranged at the rear end of the first splicing shell (5), and a plurality of bolt holes (53) are formed in the connecting table (52).
  7. 7. The power shift gearbox of an agricultural tractor chassis according to claim 6, wherein a splice (61) is arranged at the front end of the second splice case (6), a connecting groove (62) is arranged at the position where the splice (61) aligns with the bolt hole (53), a bearing plate (63) is arranged on the inner side of the second splice case (6), a perforation (64) is arranged on the bearing plate (63) along the up-down direction, the first transmission shaft (1) and the second transmission shaft (3) penetrate through the second splice case (6), and the bearing plate (63) plays a role in supporting the first transmission shaft (1) and the second transmission shaft (3).
  8. 8. The power shift gearbox of an agricultural tractor chassis according to claim 7, wherein a plurality of fixing grooves (71) are formed in the front end edge of the third splice case (7) and are used for being connected with the second splice case (6) through bolts, through-holes (72) are formed in positions of the front end pairs Ji Chuankong (64) of the third splice case (7) and are used for enabling the rear ends of the first transmission shaft (1) and the second transmission shaft (3) to penetrate into the third splice case (7) from the through-holes (72).
  9. 9. The power shift gearbox of an agricultural tractor chassis of claim 5, further comprising a shift paddle (8), wherein the shift paddle (8) is sleeved on the first drive shaft (1), and wherein the top of the shift paddle (8) is connected to the engagement sleeve (307).
  10. 10. The power shift gearbox of an agricultural tractor chassis according to claim 9, wherein a bayonet (81) is arranged at the top end of the shift pulling piece (8), the bayonet (81) is clamped on the joint sleeve (307), a sleeve hole (82) is arranged at the bottom of the shift pulling piece (8), the sleeve hole (82) is sleeved on a rear shaft (02) of the first transmission shaft (1), a pulling rod (83) is arranged at the bottom of the shift pulling piece (8), and a connector (84) is arranged at the bottom end of the pulling rod (83).

Description

Power gear shifting gearbox of chassis of agricultural tractor Technical Field The utility model relates to the technical field of gearboxes, in particular to a power shift gearbox of an agricultural tractor chassis. Background In modern agricultural production, an agricultural tractor serves as a core power device and bears various work tasks such as tillage, sowing, harvesting and the like. The performance of a gearbox, which is a key component of an agricultural tractor chassis, directly affects the efficiency of the tractor, fuel economy, and operational comfort. The conventional agricultural tractor gearbox adopts a manual gear shifting structure, and the structure needs a driver to frequently press a clutch pedal and manually stir a gear lever to realize gear switching. In a complex and changeable farmland operation environment, a driver not only needs to pay attention to the operation condition at any time, but also needs to frequently operate gear shifting, so that the labor intensity of the driver is greatly increased, fatigue driving is easy to cause, and the operation quality and the safety are further affected. In addition, in the manual gear shifting process, power is interrupted, so that power output of the tractor is discontinuous, the working efficiency is reduced, a transmission system is also subjected to larger impact, and the service life of a transmission part is shortened. Although part of tractors adopt a synchronizer gear shifting structure, the structure still needs a certain time to enable the synchronizer and the gear to achieve synchronous rotation speed in the gear shifting process, the gear shifting time is long, and the requirement of modern agriculture high-efficiency operation cannot be met. In addition, the synchronizer is easy to wear in the long-term use process, so that gear shifting is difficult, maintenance cost and maintenance workload are increased, and along with the development of modern agriculture to an intelligent and efficient direction, higher requirements are put forward on the gear shifting speed, power continuity and operation convenience of the gearbox of the agricultural tractor. The existing agricultural tractor gearbox is difficult to meet the requirements, so that the development of the power shift gearbox which can realize rapid and power-interruption-free gear shifting and is simple and convenient to operate and high in reliability becomes a key point for improving the performance and the working efficiency of the agricultural tractor. Disclosure of utility model The utility model aims to provide a power shift gearbox of an agricultural tractor chassis, which aims to solve the problems of power interruption and long gear shift time in the gear shift process of the existing agricultural tractor gearbox and improve the operation efficiency and the operation comfort of the agricultural tractor. The utility model is realized in the following way: the power shift gearbox of the chassis of the agricultural tractor comprises a first splice shell, a second splice shell and a third splice shell, wherein the first splice shell, the second splice shell and the third splice shell are sequentially connected to form a shell of the gearbox, a first transmission shaft, a first hydraulic wet clutch, a second transmission shaft and a second hydraulic wet clutch are arranged in the second splice shell, the front ends of the first transmission shaft, the first hydraulic wet clutch, the second transmission shaft and the second hydraulic wet clutch are connected with the first splice shell, the rear ends of the first transmission shaft and the second transmission shaft are inserted into the third splice shell, the second transmission shaft is arranged above the first transmission shaft, and the first hydraulic wet clutch and the second hydraulic wet clutch are respectively arranged on two sides of the first transmission shaft and the two sides of the second transmission shaft. Further, the first transmission shaft comprises a front shaft and a rear shaft which are coaxial, a gap is reserved between the front shaft and the rear shaft, the first transmission shaft is sequentially provided with a first gear, a first second gear, a first third gear and a first fourth gear from front to back, the first gear is arranged on the front shaft, the first second gear, the first third gear and the first fourth gear are arranged on the rear shaft, a second gear and a second third gear are arranged on a rotating shaft of the first hydraulic wet clutch from front to back, the second gear and the second gear are respectively meshed with the first gear and the first gear, the first hydraulic wet clutch can control rotation of the second gear and the second gear, the second gear is meshed with the first gear, the second transmission shaft is connected with the first gear, the third gear and the fourth gear are arranged on the rotating shaft from front to back, the first gear is meshed with