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CN-224211048-U - Drive-by-wire rear axle assembly and agricultural machinery

CN224211048UCN 224211048 UCN224211048 UCN 224211048UCN-224211048-U

Abstract

The utility model discloses a drive-by-wire rear axle assembly and an agricultural machine, and belongs to the technical field of agricultural machines. According to the drive-by-wire rear axle assembly and the agricultural machine, the positions of the parking driving end, the PTO driving end, the four-wheel drive driving end and/or the differential lock driving end are monitored in real time through the parking detecting element, the PTO detecting element, the four-wheel drive detecting element and/or the differential lock detecting element respectively and fed back to the controller, and an electric signal transmission control instruction is sent to the parking brake driving assembly, the PTO gear shifting driving assembly, the four-wheel drive gear shifting driving assembly and/or the electric control differential lock driving assembly through the controller, so that a mechanical stop lever is omitted, and drive-by-wire operation substitution for generating electric signals by buttons, fingers and the like can be adopted, so that the labor intensity of an agricultural machine operator is reduced. The drive-by-wire control provides an interface for automatic operation, is convenient for direct access of an automatic driving system and the like to perform unmanned control, and improves the reaction speed, control precision and stability of the rear axle assembly on the basis of simplifying a mechanical structure.

Inventors

  • YUAN YE
  • ZHANG XIN
  • ZHANG ZHIJIAO
  • LI WEIHUA
  • HAN WEI

Assignees

  • 北京中科原动力科技有限公司

Dates

Publication Date
20260508
Application Date
20250530

Claims (10)

  1. 1. Drive-by-wire rear axle assembly, its characterized in that includes: a controller (1); a rear axle assembly body (2); The parking brake driving mechanism (3) comprises a parking brake driving assembly (31) and a parking detection piece (32), the parking brake driving assembly (31) comprises a parking driving end (311), the parking driving end (311) is used for being connected with a parking brake force application piece (100) to drive the parking brake force application piece (100) to act, the parking detection piece (32) is used for detecting the position of the parking driving end (311), the parking brake driving assembly (31) and the parking detection piece (32) are electrically connected with the controller (1), and/or, A PTO shift driving mechanism (4) comprising a PTO shift driving assembly (41) and a PTO detection member (42), wherein the PTO shift driving assembly (41) comprises a PTO driving end (411), the PTO driving end (411) is used for being connected with a PTO shift force application member (200) to drive the PTO shift force application member (200) to act, the PTO detection member (42) is used for detecting the position of the PTO driving end (411), the PTO shift driving assembly (41) and the PTO detection member (42) are electrically connected with the controller (1), and/or, The four-wheel-drive gear shifting driving mechanism (5) comprises a four-wheel-drive gear shifting driving assembly (51) and a four-wheel-drive detecting piece (52), wherein the four-wheel-drive gear shifting driving assembly (51) comprises a four-wheel-drive driving end (511), the four-wheel-drive driving end (511) is used for being connected with a four-wheel-drive gear shifting force application piece (300) to drive the four-wheel-drive gear shifting force application piece (300) to act, the four-wheel-drive detecting piece (52) is used for detecting the position of the four-wheel-drive driving end (511), the four-wheel-drive gear shifting driving assembly (51) and the four-wheel-drive detecting piece (52) are electrically connected with the controller (1), and/or, The electric control differential lock mechanism (6) comprises an electric control differential lock driving assembly (61) and a differential lock detection piece (62), wherein the electric control differential lock driving assembly (61) comprises a differential lock driving end (611), the differential lock driving end (611) is used for being connected with a differential lock force application piece (400) to drive the differential lock force application piece (400) to act, the differential lock detection piece (62) is used for detecting the position of the differential lock driving end (611), and the electric control differential lock driving assembly (61) and the differential lock detection piece (62) are electrically connected with the controller (1).
  2. 2. The rear axle assembly according to claim 1, wherein the rear axle assembly body (2) comprises two output shafts (21), the two output shafts (21) being respectively for connection with left and right wheels to drive the left and right wheels to rotate; The drive-by-wire rear axle assembly further comprises two wheel speed detection pieces (7), wherein the two wheel speed detection pieces (7) are respectively used for detecting the rotating speeds of the two output shafts (21), and the two wheel speed detection pieces (7) are respectively and electrically connected with the controller (1).
  3. 3. The rear drive-by-wire assembly according to claim 1, wherein the parking brake drive assembly (31) comprises a drivingly connected parking brake motor and parking brake retarder, and/or, The parking detection element (32) is an angle sensor, and/or, The PTO shift drive assembly (41) includes a drivingly connected PTO shift motor and PTO shift reducer, and/or, The PTO detector (42) is an angle sensor, and/or, The four-wheel-drive gear shifting driving assembly (51) comprises a four-wheel-drive gear shifting motor and a four-wheel-drive gear shifting speed reducer which are in transmission connection, and/or, The four-wheel drive detection member (52) is an angle sensor, and/or, The electric control differential lock driving component (61) is an oil cylinder and/or, The differential lock detection member (62) is a contact switch.
  4. 4. Drive-by-wire rear axle assembly according to claim 1, characterized in that the park drive end (311) is provided with a first connection sleeve (312) for connection with the park brake application member (100), and/or, The PTO driving end (411) is provided with a second connecting sleeve (412) for connecting with the PTO gear-shifting force-applying member (200), and/or, The four-wheel drive end (511) is provided with a third connecting sleeve (512) for connecting with the four-wheel gear-shifting force application member (300), and/or, The differential lock driving end (611) is provided with a fourth connecting sleeve (612) for connecting with the differential lock force application member (400).
  5. 5. The rear drive axle assembly as set forth in claim 4, wherein the first connection sleeve (312) is connected to the parking brake application member (100) by a first pin (313), and/or, The second connecting sleeve (412) is connected with the PTO gear shifting force application member (200) through a second pin shaft (413), and/or, The third connecting sleeve (512) is connected with the four-wheel drive gear-shifting force application member (300) through a third pin shaft (513), and/or, The fourth connecting sleeve (612) is connected with the differential lock force application member (400) through a fourth pin shaft (613).
  6. 6. The rear drive axle assembly of claim 5, wherein the first pin (313) is a spring pin and/or, The second pin shaft (413) is a spring pin, and/or, The third pin (513) is a spring pin, and/or, The fourth pin shaft (613) is a spring pin.
  7. 7. A rear axle assembly as claimed in claim 1, wherein the controller (1) is fixedly arranged on the rear axle assembly main body (2) and/or, The parking brake driving component (31) is fixedly arranged on the rear axle assembly main body (2), and/or, The parking detection piece (32) is fixedly arranged on the parking brake driving assembly (31), and/or, The PTO gear shifting driving component (41) is fixedly arranged on the rear axle assembly main body (2) and/or, The PTO detection part (42) is fixedly arranged on the PTO gear shifting driving assembly (41), and/or, The four-wheel drive gear shifting driving component (51) is fixedly arranged on the rear axle assembly main body (2) and/or, The four-wheel drive detection part (52) is fixedly arranged on the four-wheel drive gear shifting driving assembly (51) and/or, The electric control differential lock driving component (61) is fixedly arranged on the rear axle assembly main body (2) and/or, The differential lock detection piece (62) is fixedly arranged on the electric control differential lock driving assembly (61).
  8. 8. The rear axle assembly as set forth in claim 1, wherein the parking brake driving mechanism (3) further comprises a first bracket (33), the parking brake driving assembly (31) is fixedly arranged on the first bracket (33), the first bracket (33) is detachably connected with the rear axle assembly main body (2), and/or, The PTO gear shifting driving mechanism (4) further comprises a second bracket (43), the PTO gear shifting driving assembly (41) is fixedly arranged on the second bracket (43), the second bracket (43) is detachably connected with the rear axle assembly main body (2), and/or, The four-wheel drive gear shifting driving mechanism (5) further comprises a third bracket (53), the four-wheel drive gear shifting driving assembly (51) is fixedly arranged on the third bracket (53), the third bracket (53) is detachably connected with the rear axle assembly main body (2), and/or, The electric control differential lock mechanism (6) further comprises a fourth bracket (63), the electric control differential lock driving assembly (61) is fixedly arranged on the fourth bracket (63), and the fourth bracket (63) is detachably connected with the rear axle assembly main body (2).
  9. 9. Agricultural machine, comprising a rear drive-by-wire axle assembly according to any one of claims 1-8.
  10. 10. The agricultural machine of claim 9, wherein the agricultural machine is a tractor.

Description

Drive-by-wire rear axle assembly and agricultural machinery Technical Field The utility model relates to the technical field of agricultural machinery, in particular to a drive-by-wire rear axle assembly and an agricultural machine. Background In traditional tractors, the realization of rear axle functions such as parking, PTO gear shifting, four-wheel drive gear shifting, differential lock and the like is mainly based on a mechanical connecting rod, the design is complex in structure and low in control precision, and operating levers of different types are required to be arranged in a cab, so that the space utilization rate is low, and the manual operation difficulty is increased. Especially in cases where a fast response or precise control is required, the complexity of the operation and the risk of errors increases. Along with the increasing requirements of the intelligent and automatic level of the tractor, the transmission mechanical connecting rod structure is slow in response speed due to the fact that manual operation is relied on, and the transmission mechanical connecting rod structure is difficult to combine with modern technologies such as advanced sensors and electronic control systems, so that the requirements of the new energy tractor on the aspects of automation and accurate operation cannot be met. Disclosure of utility model The utility model aims to provide a drive-by-wire rear axle assembly and an agricultural machine, which not only can reduce the labor intensity of an agricultural machine operator, but also are convenient for an automatic driving system and the like to be directly connected for unmanned control, and the reaction speed, the control precision and the stability of the rear axle assembly are improved on the basis of simplifying a mechanical structure. In order to achieve the above object, the following technical scheme is provided: in one aspect, a rear axle drive-by-wire assembly is provided, comprising: A controller; A rear axle assembly body; the parking brake driving mechanism comprises a parking brake driving assembly and a parking detection piece, wherein the parking brake driving assembly comprises a parking driving end, the parking driving end is used for being connected with a parking brake force application piece to drive the parking brake force application piece to act, the parking detection piece is used for detecting the position of the parking driving end, the parking brake driving assembly and the parking detection piece are electrically connected with the controller, and/or, The PTO gear shifting driving mechanism comprises a PTO gear shifting driving assembly and a PTO detection piece, wherein the PTO gear shifting driving assembly comprises a PTO driving end which is used for being connected with a PTO gear shifting force application piece to drive the PTO gear shifting force application piece to act, the PTO detection piece is used for detecting the position of the PTO driving end, the PTO gear shifting driving assembly and the PTO detection piece are electrically connected with the controller, and/or, The four-wheel drive gear shifting driving mechanism comprises a four-wheel drive gear shifting driving assembly and a four-wheel drive detection piece, wherein the four-wheel drive gear shifting driving assembly comprises a four-wheel drive end, the four-wheel drive end is used for being connected with a four-wheel drive gear shifting force application piece to drive the four-wheel drive gear shifting force application piece to act, the four-wheel drive detection piece is used for detecting the position of the four-wheel drive end, the four-wheel drive gear shifting driving assembly and the four-wheel drive detection piece are electrically connected with the controller, and/or, The electric control differential lock mechanism comprises an electric control differential lock driving assembly and a differential lock detection piece, wherein the electric control differential lock driving assembly comprises a differential lock driving end, the differential lock driving end is used for being connected with a differential lock force application piece to drive the differential lock force application piece to act, the differential lock detection piece is used for detecting the position of the differential lock driving end, and the electric control differential lock driving assembly and the differential lock detection piece are electrically connected with the controller. As an alternative scheme of the drive-by-wire rear axle assembly, the rear axle assembly main body comprises two output shafts, and the two output shafts are respectively used for being connected with a left wheel and a right wheel so as to drive the left wheel and the right wheel to rotate; The drive-by-wire rear axle assembly further comprises two wheel speed detection pieces, wherein the two wheel speed detection pieces are respectively used for detecting the rotating speeds of the two output sh