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CN-121533254-B - Medicinal material harvester adopting hydraulic driving system

CN121533254BCN 121533254 BCN121533254 BCN 121533254BCN-121533254-B

Abstract

A medicinal material harvester adopting a hydraulic driving system comprises a first hydraulic system, a second hydraulic system and a third hydraulic system, wherein a plunger pump of the first hydraulic system drives a walking control module, the second hydraulic system drives an operation expanding module, and the third hydraulic system drives a hydraulic expanding unit. The invention uses the division cooperation of three independent hydraulic systems, the first hydraulic system drives the walking control unit to execute the forward/reverse walking, small radius turning and differential turning actions of the harvester; the third hydraulic system adopts electrohydraulic integrated control to execute fixed operation actions such as header lifting, medicine bin tipping bucket and the like, thereby realizing accurate independent control of walking, operation expansion and fixed actions of the medicinal material harvester, adapting different operation working conditions with adjustable rotating speed, and effectively improving the flexibility, adaptability and operation efficiency of medicinal material harvesting operation.

Inventors

  • LIANG ZHENHAI
  • SUN FEILONG
  • XIAO KELING
  • LIAN TING
  • WANG LI
  • CHEN PEIMIN
  • HE WEIYONG
  • YE HONGXIAO

Assignees

  • 中联重机浙江有限公司

Dates

Publication Date
20260508
Application Date
20260116

Claims (10)

  1. 1. The medicinal material harvester adopting the hydraulic driving system comprises a first hydraulic system (1), a second hydraulic system (2), a third hydraulic system (3), an engine (6) and a transmission mechanism, and is characterized in that the engine (6) respectively drives the third hydraulic system (3) and a plunger pump (61), the plunger pump (61) respectively drives the first hydraulic system (1) and the second hydraulic system (2), the second hydraulic system (2) comprises a main pipeline (21) and a plurality of branch pipelines (22), the main pipeline (21) and the branch pipelines (22) are connected through a synchronous shunt motor (23), at least one expansion driving unit (20) is arranged on the branch pipelines (22), the expansion driving unit (20) is used for driving the transmission mechanism, the third hydraulic system (3) comprises a second pump body (31) and a hydraulic expansion unit (32), the hydraulic expansion unit (32) is used for docking the operation driving unit (33), the expansion unit (32) comprises a plurality of solenoid valves, the multi-linkage electromagnetic valve unit (321) comprises a plurality of solenoid valves (323) and a plurality of solenoid valves (323), the first valve body (321) is connected with an interface A of the operation driving unit (33) through an interface d1, the second valve body (322) is connected with an interface B of the operation driving unit (33) through an interface d2, one end of the third valve body (323) is connected with the first valve body (321) through an interface B, the other end of the third valve body is connected with the second valve body (322) through an interface a, the operation driving unit (33) comprises a reserved output operation unit, the reserved output operation unit has a header floating function, the interface A in the reserved output operation unit is a grounding cylinder with a rod cavity, the interface B is a grounding cylinder without a rod cavity, when the interface a, the interface B, the interface d1 and the interface d2 are not powered, the interfaces A and the interface B have a pressure maintaining effect, when the interface B and the interface d1 are powered, the interface a and the interface d2 are not powered, the header is powered down, the header has a strong pressure function, and when the interface a and the interface d1 and the interface d2 are powered down, and the header is in a ground state without strong pressure.
  2. 2. The medical harvester of claim 1, wherein the transmission mechanism comprises a conveying chain assembly (4) and a shovel blade assembly (5).
  3. 3. The medical harvester adopting a hydraulic driving system according to claim 2, wherein the conveying chain assembly (4) comprises a first conveying chain (41) and a second conveying chain (42), and the expansion driving unit (20) corresponding to the first conveying chain (41) and the expansion driving unit (20) corresponding to the second conveying chain (42) are positioned on the same branch pipeline (22).
  4. 4. A harvesting machine according to any one of claims 1 to 3, wherein the main conduit (21) is provided with an unloading valve (211).
  5. 5. The medical harvester adopting a hydraulic drive system according to claim 1, wherein the first hydraulic system (1) comprises a right traveling assembly (11) and a left traveling assembly (12), the right traveling assembly (11) comprises a right hydraulic pump (111), a right plunger motor (112) and a right hydraulic oil pipe group (113) for connecting the right hydraulic pump (111) and the right plunger motor (112), and the left traveling assembly (12) comprises a left hydraulic pump (121), a left plunger motor (122) and a left hydraulic oil pipe group (123) for connecting the left hydraulic pump (121) and the left plunger motor (122).
  6. 6. A medical harvester employing a hydraulic drive system according to claim 5, wherein the right hydraulic oil pipe group (113) comprises a right hydraulic oil pipe A and a right hydraulic oil pipe B, the right hydraulic oil pipe A is used for butting a pump oil port A of the right hydraulic pump (111) and an oil port A of a right plunger motor (112), the right hydraulic oil pipe B is used for butting a pump oil port B of the right hydraulic pump (111) and an oil port B of the right plunger motor (112), the left hydraulic oil pipe group (123) comprises a left hydraulic oil pipe A and a left hydraulic oil pipe B, the left hydraulic oil pipe A is used for butting a pump oil port A of the left hydraulic pump (121) and an oil port A of a left plunger motor (122), and the left hydraulic oil pipe B is used for butting a pump oil port B of the left hydraulic pump (121) and an oil port B of the left plunger motor (122).
  7. 7. The medical harvester adopting a hydraulic driving system according to claim 5, wherein the right walking assembly (11) further comprises a right shifting mechanism (114), the left walking assembly (12) further comprises a left shifting mechanism (124), and an oil port P of the right shifting mechanism (114) is communicated with an oil port P of the left shifting mechanism (124) through an oil pipe P.
  8. 8. The harvesting machine according to claim 1, wherein the second pump body (31) is a gear pump.
  9. 9. The medical harvester according to claim 8, wherein the operation driving unit (33) is any one or more of a header lifting operation unit, a compression roller lifting operation unit, a header folding operation unit and a medicine bin lifting operation unit.
  10. 10. The medical harvester according to claim 9, wherein the multi-solenoid valve is a five-solenoid valve.

Description

Medicinal material harvester adopting hydraulic driving system Technical Field The invention belongs to the technical field of hydraulic drive of medicinal material harvesting equipment, and particularly relates to a medicinal material harvester adopting a hydraulic drive system. Background In the existing medicinal material harvester, a single hydraulic system is generally adopted to drive the arrangement of a walking assembly of the harvester, such as a hydraulic double-pump double-motor synchronous walking and steering control device disclosed by publication No. CN221718633U, and the hydraulic double-pump double-motor synchronous walking and steering control device comprises a hydraulic pump assembly and a driving assembly, wherein the hydraulic pump assembly comprises a first hydraulic pump body and a second hydraulic pump body, the driving assembly comprises a left walking assembly and a right walking assembly, a left walking plunger motor is arranged in the left walking assembly, a right walking plunger motor is arranged in the right walking assembly, the first hydraulic pump body is communicated with the left walking plunger motor through a first hydraulic oil pipe group, the second hydraulic pump body is communicated with the right walking plunger motor through a second hydraulic oil pipe group, a hydraulic control valve is arranged between the hydraulic pump assembly and the steering wheel assembly, and a throttle valve is arranged between the hydraulic control valve and the hydraulic pump assembly to control oil complementation between the first hydraulic pump body and the second hydraulic pump body. When the hydraulic pump is in a straight run, the first hydraulic pump body and the second hydraulic pump body are complemented with oil through the hydraulic control valve and the throttle valve, so that the phenomenon of deviation in the running process caused by inconsistent hydraulic pressure is avoided, and the stability when the hydraulic pump is in the straight run is ensured. However, with the continuous development of the agricultural mechanical process, the development functions of the harvester are increased and perfected, the development functions also need to be driven by a driving system, and the original hydraulic driving system cannot meet various urgent problems in the actual agricultural production at present, so that a novel hydraulic driving system for the harvester needs to be developed to realize the integration and optimization of various functional mechanisms of the harvester. Disclosure of Invention The invention uses the division cooperation of three independent hydraulic systems, the first hydraulic system drives the walking control unit to execute the forward/reverse walking, small radius turning and differential turning actions of the harvester; the third hydraulic system adopts electrohydraulic integrated control to execute fixed operation actions such as header lifting, medicine bin tipping bucket and the like, thereby realizing accurate independent control of walking, operation expansion and fixed actions of the medicinal material harvester, adapting different operation working conditions with adjustable rotating speed, and effectively improving the flexibility, adaptability and operation efficiency of medicinal material harvesting operation. The technical problem to be solved by the invention can be solved by adopting the following technical scheme that the medicinal material harvester adopting the hydraulic driving system comprises a first hydraulic system, a second hydraulic system, a third hydraulic system, an engine and a transmission mechanism, wherein the engine respectively drives the third hydraulic system and a plunger pump, the plunger pump respectively drives the first hydraulic system and the second hydraulic system, the second hydraulic system comprises a main pipeline and a plurality of branch pipelines, the main pipeline and the branch pipelines are connected through a synchronous split-flow motor, at least one expansion driving unit is arranged on the branch pipelines and used for driving the transmission mechanism, and the third hydraulic system comprises a second pump body and a hydraulic expansion unit which are used for butt joint operation driving units. The transmission mechanism comprises a conveying chain assembly and a shovel blade assembly. The conveying chain assembly comprises a first conveying chain and a second conveying chain, and the expansion driving unit corresponding to the first conveying chain and the expansion driving unit corresponding to the second conveying chain are located on the same branch pipeline. An unloading valve is arranged on the main pipeline. The first hydraulic system comprises a right walking assembly and a left walking assembly, the right walking assembly comprises a right hydraulic pump, a right plunger motor and a right hydraulic oil pipe group used for connecting the right hydraulic pump and the right plunger