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CN-224197852-U - Tractor vehicle

CN224197852UCN 224197852 UCN224197852 UCN 224197852UCN-224197852-U

Abstract

The utility model provides a tractor which comprises a body main body, two travelling mechanisms and two driving mechanisms, wherein the two travelling mechanisms are respectively connected to the left side and the right side of the body main body, the two driving mechanisms are respectively connected to the inner side of the body main body and are respectively in transmission connection with one driving mechanism, each travelling mechanism comprises a side frame, a crawler belt and two rotating wheel groups which are distributed at intervals front and back, each driving mechanism comprises a motor and a transmission chain wheel assembly, each driving mechanism further comprises a supporting shaft, two ends of each supporting shaft are respectively connected with the side frame on the corresponding side in a rotating way, and the inner end of each side frame is respectively connected with an output shaft of the motor on the corresponding side in a coaxial way and is circumferentially limited.

Inventors

  • Si Xiaoxiao
  • LU YICHU
  • LI BAIPENG
  • LI CHUANLONG
  • CHEN BAILE

Assignees

  • 库宁机械制造(宁波)有限公司

Dates

Publication Date
20260505
Application Date
20250630

Claims (9)

  1. 1. A tractor comprises a main body (1), two travelling mechanisms and two driving mechanisms, wherein the two travelling mechanisms are respectively connected to the left side and the right side of the main body (1), the two driving mechanisms are respectively connected to the inner side of the main body (1), the two travelling mechanisms are respectively connected with one driving mechanism in a transmission way, each travelling mechanism comprises a side frame (2), a crawler belt (3) and two rotating wheel sets (4) which are distributed at intervals in the front-back way, the two side frames (2) are respectively fixed on the left side and the right side of the main body (1), the two rotating wheel sets (4) in each travelling mechanism are respectively connected to the side frames (2) on the corresponding sides in a front-back interval way in a rotating way, the crawler belt (3) in each travelling mechanism is sleeved outside the two rotating wheel sets (4) in the corresponding travelling mechanism, each driving mechanism comprises a motor (5) and a transmission chain wheel assembly (6), the motor (5) is fixed on the inner side of the main body (1), the two rotating wheel sets (4) in the travelling mechanism are respectively connected with the corresponding output shafts (6) on the corresponding sides of the front-side of the driving wheel sets (4), the driving mechanism is characterized by further comprising a supporting shaft (7), wherein two ends of each supporting shaft (7) are rotationally connected with a side frame (2) on the corresponding side, and the inner end part of each side frame (2) is coaxially connected with the output shaft of the motor (5) on the corresponding side and circumferentially limited.
  2. 2. The tractor as claimed in claim 1, wherein each support shaft (7) is coaxially provided with a plugging blind hole (71) at the inner end portion, a key slot (72) is formed in the side wall of each plugging blind hole (71), and the output shaft of each motor (5) is coaxially inserted into the plugging blind hole (71) on the support shaft (7) on the corresponding side and is circumferentially limited with the key slot (72) through a limiting key.
  3. 3. Tractor according to claim 1 or 2, characterized in that the outer end of each supporting shaft (7) is coaxially provided with a cylinder (73) with an outer diameter smaller than that of the supporting shaft (7), each driving mechanism further comprises a bearing seat (8), each bearing seat (8) is fixed on the corresponding side frame (2), and the cylinder (73) on each supporting shaft (7) is rotatably connected with the corresponding side bearing seat (8).
  4. 4. A tractor according to claim 3, characterized in that the motor (5) is a brushless dc motor.
  5. 5. The tractor according to claim 1, 2 or 4, characterized in that it further comprises a protective cover (9), said protective cover (9) being housed outside the two motors (5) and being fixed to the body (1).
  6. 6. The tractor of claim 5, wherein the protective cover (9) is uniformly provided with a plurality of radiating holes (91), and a radiating fan (10) is fixed on the side wall of the protective cover (9).
  7. 7. The tractor as claimed in claim 6, wherein two heat dissipation fans (10) are provided, and the two heat dissipation fans (10) are respectively arranged corresponding to one motor (5) in the axial direction.
  8. 8. The tractor as claimed in claim 1, 2, 4, 6 or 7, wherein two handles (11) are fixed on the top of the body (1) and are spaced front and back.
  9. 9. Tractor according to claim 1 or 2 or 4 or 6 or 7, characterized in that the top of the body (1) is also fixed with a connecting bracket (12).

Description

Tractor vehicle Technical Field The utility model relates to the technical field of traction devices, in particular to a tractor. Background The traction vehicle is a traction device for traction or moving objects, and at present, chinese patent publication No. 117565985B discloses an intelligent traction robot, in the structure of the intelligent traction robot, a rotating wheel positioned in the intelligent traction robot is in transmission connection with an output shaft of a driving motor through a driven sprocket, a transmission chain and a driving sprocket, and the output shaft of the driving motor in the intelligent traction robot is of a single-side supporting structure, so that when the intelligent traction robot bears a large load, the output shaft of the driving motor can generate a deviation condition, namely, the condition that the driving sprocket generates the eccentricity is caused, and further, tooth jumping and noise are generated between the transmission chain and the driving sprocket, namely, the reliability and the stability of the driving motor to the driving of the rotating wheel can be influenced. Disclosure of utility model The technical problem to be solved by the utility model is to provide a tractor which can ensure the reliability and stability of the transmission connection among a motor, a transmission chain wheel assembly and a rotating wheel set and can avoid the occurrence of tooth jump or noise of the transmission chain wheel assembly. The utility model provides a tractor which comprises a body main body, two travelling mechanisms and two driving mechanisms, wherein the two travelling mechanisms are respectively connected to the left side and the right side of the body main body, the two driving mechanisms are respectively connected to the inner side of the body main body, the two travelling mechanisms are respectively connected with one driving mechanism in a transmission way, each travelling mechanism comprises a side frame, a crawler belt and two rotating wheel groups which are distributed at intervals in the front-back direction, the two side frames are respectively fixed to the left side and the right side of the body main body, the two rotating wheel groups in each travelling mechanism are respectively connected to side frames on the corresponding sides in a front-back direction in a rotation way in a front-back interval way, the crawler belt in each travelling mechanism is sleeved outside the two rotating wheel groups in the corresponding travelling mechanism, each driving mechanism comprises a motor and a transmission sprocket assembly, the motor is fixed to the inner side of the body main body, the rotating wheel groups in the front side of one travelling mechanism are respectively connected with the output shafts of the motor on the corresponding sides through the transmission sprocket assemblies on the corresponding sides, the rotating wheel groups in the other travelling mechanism are respectively connected with the output shafts of the motor on the corresponding sides through the transmission sprocket assemblies on the corresponding sides, each driving mechanism also comprises a supporting shaft and two end parts which are connected with the corresponding sides in the coaxial directions. By adopting the structure, the support shaft can realize the support function on the outer end part of the output shaft of the motor under the action of the support shaft, namely, the output shaft of the motor can realize the purpose of two-point support, so that when the tractor bears a larger load, the eccentric condition of the output shaft of the motor can be effectively avoided, namely, the reliability and the stability of transmission connection among the motor, the transmission chain wheel assembly and the rotating wheel set can be ensured, and the occurrence of tooth jump or noise of the transmission chain wheel assembly can be avoided. In one possible implementation mode, each inner end part of each supporting shaft is coaxially provided with a plugging blind hole, each side wall of each plugging blind hole is provided with a key groove, the output shaft of each motor is coaxially inserted into the corresponding plugging blind hole on the supporting shaft and circumferentially limited by a limiting key, after the output shaft of the motor is coaxially inserted into the corresponding plugging blind hole on the supporting shaft, the output shaft of the motor can abut against the inner end part of the plugging blind hole so as to realize axial limiting of the supporting shaft and the output shaft of the motor, and the supporting shaft can reliably realize circumferential limiting of the output shaft of the motor after the key groove is connected with the output shaft of the motor by the limiting key. In one possible implementation mode, the outer end part of each supporting shaft is coaxially provided with a cylinder with the outer diameter smaller than that of the suppo