Hydraulic system of whole-stalk sugarcane harvester

Abstract

This invention discloses a hydraulic system for a whole-stalk sugarcane harvester, comprising a walking hydraulic system, a working hydraulic system, and an auxiliary hydraulic system. The working hydraulic system includes multiple pipeline systems, each comprising an oil pump, a reversing valve, a motor assembly, pipelines, and a synchronization mechanism for synchronizing the motors. The oil pump, reversing valve, motor assembly, and synchronization mechanism are connected together via pipelines to form a circuit. The synchronization mechanism includes a flow divider / combiner valve and a gearbox. The motor assembly includes a root-cutting motor, a leaf-stripping motor, a conveying motor, and a dust removal fan motor. Compared with existing technologies, the hydraulic system in this invention is specifically designed for whole-stalk sugarcane harvesters. The entire workflow includes sugarcane splitting, root cutting, top trimming, conveying, leaf stripping, and dust removal. Based on this workflow, this invention designs a complete and rational hydraulic system.

Description

Technical Field

[0001] The invention relates to a hydraulic system for a whole-stalk sugarcane harvester. Background Art

[0002] Sugarcane is the main cash crop used to extract sugar. After harvesting, the sugarcane is taken to the sugar factory for extraction of sugar. After the sugarcane is taken to the sugar factory, it will be required to have a certain storage period. During the storage period, the sugarcane is required not to deteriorate. Among the existing whole-stalk and cut-off harvesting methods, the whole-stalk sugarcane has a complete outer layer, which is most conducive to storage.

[0003] At present, in order to meet the requirements of sugar factories, sugarcane harvesting in my country is still mainly done manually, mainly manual felling and loading, and some manual felling and mechanical loading methods. There are problems of high labor intensity, low harvesting efficiency and high labor costs, which leads to reduced profits from growing sugarcane and lower planting rates.

[0004] Some sugarcane is harvested by a cut-off sugarcane harvester. When harvesting, the sugarcane is harvested into sections. The sugarcane has many cuts, which is not conducive to preservation. After being sent to the sugar factory, the sugar must be squeezed quickly. Although the cut-off sugarcane harvester has high harvesting efficiency and low harvesting cost, the harvested sugarcane cannot be preserved for a long time and cannot meet the requirements of the sugar factory. This is also the main reason why the mechanical harvesting rate of sugarcane is not high.

[0005] In summary, the market needs a whole-pole sugarcane harvester, which can not only improve the efficiency of sugarcane harvesting and reduce labor intensity, but also reduce the cost of sugarcane planting, increase growers' income, and meet the requirements of sugar factories.

[0006] The segmented harvester lifts and cuts the whole sugarcane into multiple sections for storage, while the whole-stem harvester stores the whole sugarcane, so the processes of the two are quite different. The whole-stem sugarcane harvester has many working parts, complex structure and movement, so hydraulic control and drive working parts are used to achieve different operating actions to ensure the normal operation of the machine. However, the existing whole-stem hydraulic system is not mature enough and there will be various inconveniences during operation. The key technical parts of the segmented sugarcane harvester cannot be applied to the whole-stem harvester structure, so a new set of hydraulic systems is needed to match the whole-stem harvesting process of sugarcane. Summary of the invention

[0007] The purpose of the present invention is to solve the above deficiencies in the prior art and provide a hydraulic system for a whole-stalk sugarcane harvester.

[0008] A whole-stalk sugarcane harvester hydraulic system, the main body includes a travel hydraulic system, a working hydraulic system and an auxiliary hydraulic system, the working hydraulic system includes a plurality of pipeline systems, the pipeline system includes an oil pump, a reversing valve, a motor group, pipelines and a synchronization mechanism for synchronizing the motor, the oil pump, the reversing valve, the motor group and the synchronization mechanism are connected together through pipelines to form a loop;

[0009] The synchronization mechanism includes a flow dividing and collecting valve and a gear box, and the motor group includes a root cutting motor, a leaf stripping motor, a conveying motor and a debris removal fan motor.

[0010] The working principle of the present invention is as follows: the root cutting motor, leaf stripping motor, topping motor, sugarcane sorting motor and conveying motor are distributed in various positions of the oil circuit, the entire hydraulic system is designed through the processes of topping, sugarcane sorting, root cutting, conveying and leaf stripping, and the speed ratio between the various motors is kept constant through the synchronization mechanism to ensure the smooth operation of the entire system.

[0011] In order to ensure that the machine can move normally, the travel hydraulic system includes a travel pump, a travel motor, a gearbox and a wheel drive. The travel motor is connected to the travel pump through a pipeline, and the travel motor is connected to the gearbox and the wheel drive.

[0012] In order to ensure the smooth operation of the hydraulic system and prevent excessive oil circuit pressure, the working hydraulic system includes four pipeline systems, namely the first pipeline system, the second pipeline system, the third pipeline system and the fourth pipeline system, and the auxiliary hydraulic system includes the fifth pipeline system. The first pipeline system, the second pipeline system, the third pipeline system, the fourth pipeline system and the fifth pipeline system are connected in parallel.

[0013] In order to ensure the smooth operation of the root cutting motor, the leaf stripping motor and the conveying motor, the first pipeline system includes a first pipeline, a second pipeline, a first oil supply line, a first oil return line, a first branch line and a second branch line;

[0014] One end of the first oil supply circuit is connected to the first oil pump, the other end of the first oil supply circuit is connected to the first reversing valve, one end of the first oil return circuit is connected to the oil tank, and the other end of the first oil return circuit is connected to the first reversing valve;

[0015] One end of the first pipeline is connected to the first reversing valve, the other end of the first pipeline is connected to one end of the first branch and the second branch, one end of the first branch and the second branch is connected to one end of the second pipeline, the other end of the second pipeline is connected to the first reversing valve, wherein the first branch and the second branch are connected in parallel;

[0016] The motor group includes a first motor group, the first motor group includes a root cutting motor, a first conveying motor and a first leaf stripping motor, the root cutting motor includes an upper root cutting motor and a lower root cutting motor, the first conveying motor includes an upper first conveying motor and a lower first conveying motor, and the first leaf stripping motor includes an upper first leaf stripping motor and a lower first leaf stripping motor;

[0017] The upper root cutting motor, the upper first conveying motor and the upper first leaf stripping motor are located in the first branch, the lower root cutting motor, the lower first conveying motor and the lower first leaf stripping motor are located in the second branch, the first conveying motor is located behind the root cutting motor, the leaf stripping motor is located behind the conveying motor, and the upper root cutting motor and the lower root cutting motor are respectively connected to the output end of the gear box.

[0018] In order to ensure that the speed ratio of the leaf stripping motor and the conveying motor is constant and that the oil circuit pressure is not too large, the second pipeline system includes a second oil supply circuit, a second oil return circuit, a third pipeline, a fourth pipeline, a third branch circuit and a fourth branch circuit;

[0019] One end of the second oil supply circuit is connected to the second oil pump, the other end of the second oil supply circuit is connected to the second reversing valve, one end of the second oil return circuit is connected to the oil tank, and the other end of the second oil return circuit is connected to the second reversing valve;

[0020] One end of the third pipeline is connected to the second reversing valve, the other end of the third pipeline is connected to one end of the third branch and the fourth branch, the other ends of the third branch and the fourth branch are connected to one end of the fourth pipeline, the other end of the fourth pipeline is connected to the second reversing valve, wherein the third branch and the fourth branch are connected in parallel;

[0021] The motor group includes a second motor group, the second motor group includes a second leaf stripping motor, a second conveying motor and a dust removal fan motor, the second leaf stripping motor includes an upper second leaf stripping motor and a lower second leaf stripping motor, and the second conveying motor includes an upper second conveying motor and a lower second conveying motor;

[0022] The upper second leaf stripping motor, the upper second conveying motor and the impurity removal fan motor are located in the third branch, the lower second leaf stripping motor is located in the fourth branch, the second conveying motor is located behind the second leaf stripping motor, and the impurity removal fan motor is located behind the second leaf stripping motor; a diversion and collecting valve is provided on the third pipeline.

[0023] In order to ensure the smooth operation of the sugarcane dividing motor, it is characterized in that the third pipeline system includes a third oil supply circuit, a third oil return circuit and a fifth pipeline, one end of the third oil supply circuit is connected to the third oil pump, the other end of the third oil supply circuit is connected to the third reversing valve, one end of the third oil return circuit is connected to the oil tank, the other end of the third oil return circuit is connected to the third reversing valve, one end of the fifth pipeline is connected to the reversing valve, and the other end of the fifth pipeline is also connected to the reversing valve;

[0024] The motor group includes a third motor group, the third motor group includes a sugarcane sorting motor, the sugarcane sorting motor includes an inner sugarcane sorting motor and an outer sugarcane sorting motor, the inner sugarcane sorting motor and the outer sugarcane sorting motor are connected in series, the inner sugarcane sorting motor includes a left inner sugarcane sorting motor and a right inner sugarcane sorting motor, and the outer sugarcane sorting motor includes a left outer sugarcane sorting motor and a right outer sugarcane sorting motor.

[0025] In order to ensure the smooth operation of the tipping device, it is characterized in that the fourth pipeline system includes a fourth oil supply circuit, a fourth oil return circuit and a sixth pipeline, one end of the fourth oil supply circuit is connected to the fourth oil pump, the other end of the fourth oil supply circuit is connected to the fourth reversing valve, one end of the fourth oil return circuit is connected to the oil tank, the other end of the fourth oil return circuit is connected to the fourth reversing valve, one end of the sixth pipeline is connected to the fourth reversing valve, and the other end of the sixth pipeline is also connected to the fourth reversing valve;

[0026] The motor group includes a fourth motor group, and the fourth motor group includes a first topping motor and a second topping motor. The first topping motor and the second topping motor are located in a sixth pipeline, and the first topping motor and the second topping motor are connected in series.

[0027] In order to make the oil circuit of the auxiliary hydraulic system more reasonable, the fifth pipeline includes a fifth oil supply circuit, a fifth oil return circuit, a sixth oil return circuit, a seventh pipeline, an eighth pipeline, a ninth pipeline and a tenth pipeline;

[0028] One end of the fifth oil supply circuit is connected to the fifth oil pump, the other end of the fifth oil supply circuit is connected to the control valve, one end of the seventh pipeline is connected to the control valve, the other end of the seventh pipeline is connected to the first cylinder group, the first cylinder group is connected to the fifth oil return circuit, one end of the eighth pipeline is connected to the control valve, the other end of the eighth pipeline is connected to the second cylinder group, the second cylinder group is connected to one end of the ninth pipeline, the other end of the ninth pipeline is connected to the fifth oil return circuit;

[0029] One end of the tenth pipeline is connected to the eighth pipeline, the other end of the tenth pipeline is connected to the third cylinder group, the third cylinder group is connected to the sixth oil return circuit, and the fifth and sixth oil return circuits are connected to the oil tank.

[0030] In order to enable free steering and free lifting and lowering of the topper and the root cutter, the first cylinder group includes a steering cylinder, and the second cylinder group includes a topper lifting cylinder, a root cutting lifting cylinder and a sugarcane dividing lifting cylinder.

[0031] In order to ensure the priority of the steering cylinder, the control valve is a priority valve for supplying oil to the steering cylinder in priority.

[0032] In order to ensure the overall safety of the hydraulic system, overflow valves are installed on all oil supply lines. Beneficial Effects

[0033] Compared with the prior art, the hydraulic system in the present invention is specially used for the whole-pole sugarcane harvester. The whole working process includes sugarcane sorting, root cutting, top beating, transportation, leaf stripping and weed removal. According to this process, the present invention designs a complete set of reasonable hydraulic systems, including hydraulic motors for driving working parts such as sugarcane sorting device, top beating device, root cutting device, etc., oil cylinders for controlling the lifting of the above working parts, and a travel hydraulic system and a steering hydraulic system for controlling the movement of the machine;

[0034] By dividing the entire hydraulic system into five oil circuits, the pressure in the entire oil circuit is reduced to prevent excessive system pressure from causing heating of the hydraulic system and damage to the system. The diverter and collector valves and gear boxes are used to ensure a constant motor speed ratio and stable operation of the hydraulic system. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the hydraulic system of a whole-stalk sugarcane harvester;

[0036] Figure 2 It is a schematic diagram of the travel hydraulic system;

[0037] Figure 3 is a schematic diagram of the first piping system;

[0038] Figure 4 is a schematic diagram of the second piping system;

[0039] Figure 5 is a schematic diagram of the third piping system;

[0040] Figure 6 is a schematic diagram of the fourth piping system;

[0041] Figure 7 is a schematic diagram of the fifth piping system;

[0042] In the figure, 1, working hydraulic system, 2, auxiliary hydraulic system, 3, walking hydraulic system, 31, first oil pump, 32, first oil supply circuit, 33, first reversing valve, 34, first pipeline, 35, first branch, 36, upper root cutting motor, 37, upper first conveying motor, 38, upper first leaf stripping motor, 39, second branch, 310, second pipeline, 311, lower first leaf stripping motor, 312, lower first conveying motor, 313, lower root cutting motor, 314, gear box, 315, first oil return circuit, 41, second oil pump, 42, second oil supply circuit, 43, second reversing valve, 44, third pipeline, 45, flow dividing and collecting valve, 46, third branch, 47, upper second leaf stripping motor, 48, upper second conveying motor, 49, impurity removal fan motor, 410, fourth pipeline, 411, fourth branch, 4 12. Lower second conveying motor, 413. Lower second leaf stripping motor, 414. Second oil return circuit, 51. Third oil pump, 52. Third oil supply circuit, 53. Third reversing valve, 54. Fifth pipeline, 55. Left outer sugarcane sorting motor, 56. Left inner sugarcane sorting motor, 57. Right inner sugarcane sorting motor, 58. Right outer sugarcane sorting motor, 61. Fourth oil pump, 62. Fourth oil supply circuit, 63. Fourth reversing valve, 64. Sixth pipeline, 65. First toe-beating motor, 66. Second toe-beating motor, 67. Fourth oil return circuit, 71. Fifth oil pump, 72. Fifth oil supply circuit, 73. Priority valve, 74. Seventh pipeline, 75. Eighth pipeline, 76. Tenth pipeline, 77. Second cylinder group, 78. Ninth pipeline, 79. Third cylinder group, 710. Sixth oil return circuit, 711. First cylinder group, 712. Fifth oil return circuit. DETAILED DESCRIPTION

[0043] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0044] like Figure 1-7As shown, a working hydraulic system 1, an auxiliary hydraulic system 2, a travel hydraulic system 3, a first oil pump 31, a first oil supply circuit 32, a first reversing valve 33, a first pipeline 34, a first branch 35, an upper root cutting motor 36, an upper first conveying motor 37, an upper first leaf stripping motor 38, a second branch 39, a second pipeline 310, a lower first leaf stripping motor 311, a lower first conveying motor 312, a lower root cutting motor 313, a gear box 314, a first oil return circuit 315, a second oil pump 41, a second oil supply circuit 42, a second reversing valve 43, a third pipeline 44, a flow dividing and collecting valve 45, a third branch 46, an upper second leaf stripping motor 47, an upper second conveying motor 48, a debris removal fan motor 49, a fourth pipeline 410, a fourth branch 411, The second lower leaf stripping motor 412, the second lower leaf stripping motor 413, the second oil return circuit 414, the third oil pump 51, the third oil supply circuit 52, the third reversing valve 53, the fifth pipeline 54, the left outer sugarcane dividing motor 55, the left inner sugarcane dividing motor 56, the right inner sugarcane dividing motor 57, the right outer sugarcane dividing motor 58, the fourth oil pump 61, the fourth oil supply circuit 62, the fourth reversing valve 63, the sixth pipeline 64, the first topping motor 65, the second topping motor 66, the fourth oil return circuit 67, the fifth oil pump 71, the fifth oil supply circuit 72, the priority valve 73, the seventh pipeline 74, the eighth pipeline 75, the tenth pipeline 76, the second cylinder group 77, the ninth pipeline 78, the third cylinder group 79, the sixth oil return circuit 710, the first cylinder group 711, the fifth oil return circuit 712;

[0045] A whole-stalk sugarcane harvester hydraulic system, comprising a travel hydraulic system 3, a working hydraulic system 1 and an auxiliary hydraulic system 2, wherein the working hydraulic system 1 comprises a plurality of pipeline systems, wherein the pipeline system comprises an oil pump, a reversing valve, a motor group, pipelines and a synchronization mechanism for synchronizing the motors, wherein the oil pump, the reversing valve, the motor group and the synchronization mechanism are connected together through pipelines to form a circuit;

[0046] The synchronization mechanism includes a flow dividing and collecting valve 45 and a gear box 314 , and the motor group includes a root cutting motor, a leaf stripping motor, a conveying motor and a debris removal fan motor 49 .

[0047] In this embodiment, the travel hydraulic system 3 includes a travel pump, a travel motor, a gearbox and a wheel drive. The travel motor is connected to the travel pump through a pipeline, and the travel motor is connected to the gearbox and the wheel drive.

[0048] In this embodiment, the working hydraulic system includes four pipeline systems, namely a first pipeline system 34, a second pipeline system 310, a third pipeline system 44 and a fourth pipeline system 410, and the auxiliary hydraulic system 2 includes a fifth pipeline system 54. The first pipeline system 34, the second pipeline system 310, the third pipeline system 44, the fourth pipeline system 410 and the fifth pipeline system 54 are connected in parallel.

[0049] In this embodiment, the first pipeline 34 system includes a first pipeline 34, a second pipeline 310, a first oil supply line 32, a first oil return line 315, a first branch line 35 and a second branch line 39;

[0050] One end of the first oil supply circuit 32 is connected to the first oil pump 31, and the other end of the first oil supply circuit 32 is connected to the first reversing valve 33. One end of the first oil return circuit 315 is connected to the oil tank, and the other end of the first oil return circuit 315 is connected to the first reversing valve 33.

[0051] One end of the first pipeline 34 is connected to the first reversing valve 33, and the other end of the first pipeline 34 is connected to one end of the first branch 35 and the second branch 39, and one end of the first branch 35 and the second branch 39 is connected to one end of the second pipeline 310, and the other end of the second pipeline 310 is connected to the first reversing valve 33, wherein the first branch 35 and the second branch 39 are connected in parallel;

[0052] The motor group includes a first motor group, the first motor group includes a root cutting motor, a first conveying motor and a first leaf stripping motor, the root cutting motor includes an upper root cutting motor 36 and a lower root cutting motor 313, the first conveying motor includes an upper first conveying motor 37 and a lower first conveying motor 312, and the first leaf stripping motor includes an upper first leaf stripping motor 38 and a lower first leaf stripping motor 311;

[0053] The upper root cutting motor 36, the upper first conveying motor 37 and the upper first leaf stripping motor 38 are located in the first branch 35, the lower root cutting motor 313, the lower first conveying motor 312 and the lower first leaf stripping motor 311 are located in the second branch 39, the first conveying motor is located behind the root cutting motor, the leaf stripping motor is located behind the conveying motor, and the upper root cutting motor 36 and the lower root cutting motor 313 are respectively connected to the output end of the gear box 314.

[0054] In this embodiment, the second pipeline 310 system includes a second oil supply line 42, a second oil return line 414, a third pipeline 44, a fourth pipeline 410, a third branch line 46 and a fourth branch line 411;

[0055] One end of the second oil supply circuit 42 is connected to the second oil pump 41, and the other end of the second oil supply circuit 42 is connected to the second reversing valve 43; one end of the second oil return circuit 414 is connected to the oil tank, and the other end of the second oil return circuit 414 is connected to the second reversing valve 43;

[0056] One end of the third pipeline 44 is connected to the second reversing valve 43, and the other end of the third pipeline 44 is connected to the third branch 46 and one end of the fourth branch 411, and the other ends of the third branch 46 and the fourth branch 411 are connected to one end of the fourth pipeline 410, and the other end of the fourth pipeline 410 is connected to the second reversing valve 43, wherein the third branch 46 and the fourth branch 411 are connected in parallel;

[0057] The motor group includes a second motor group, the second motor group includes a second leaf stripping motor, a second conveying motor and a dust removal fan motor 49, the second leaf stripping motor includes an upper second leaf stripping motor 47 and a lower second leaf stripping motor 412, and the second conveying motor includes an upper second conveying motor 48 and a lower second conveying motor 412;

[0058] The upper second leaf stripping motor 47, the upper second conveying motor 48 and the impurity removal fan motor 49 are located on the third branch 46, the lower second leaf stripping motor 413 is located on the fourth branch 411, the second conveying motor is located behind the second leaf stripping motor, and the impurity removal fan motor 49 is located behind the second leaf stripping motor; the third pipeline 44 is provided with a diversion and collecting valve 45.

[0059] In this embodiment, the third pipeline 44 system includes a third oil supply line 52, a third oil return line and a fifth pipeline 54. One end of the third oil supply line 52 is connected to the third oil pump 51, and the other end of the third oil supply line 52 is connected to the third reversing valve 53. One end of the third oil return line is connected to the oil tank, and the other end of the third oil return line is connected to the third reversing valve 53. One end of the fifth pipeline 54 is connected to the reversing valve, and the other end of the fifth pipeline 54 is also connected to the reversing valve.

[0060] The motor group includes a third motor group, and the third motor group includes a sugarcane sorting motor. The sugarcane sorting motor includes an inner sugarcane sorting motor and an outer sugarcane sorting motor. The inner sugarcane sorting motor and the outer sugarcane sorting motor are connected in series. The inner sugarcane sorting motor includes a left inner sugarcane sorting motor 56 and a right inner sugarcane sorting motor 57, and the outer sugarcane sorting motor includes a left outer sugarcane sorting motor 55 and a right outer sugarcane sorting motor 58.

[0061] In this embodiment, the fourth pipeline 410 system includes a fourth oil supply line 62, a fourth oil return line 67 and a sixth pipeline 64, one end of the fourth oil supply line 62 is connected to the fourth oil pump 61, the other end of the fourth oil supply line 62 is connected to the fourth reversing valve 63, one end of the fourth oil return line 67 is connected to the oil tank, the other end of the fourth oil return line 67 is connected to the fourth reversing valve 63, one end of the sixth pipeline 64 is connected to the fourth reversing valve 63, and the other end of the sixth pipeline 64 is also connected to the fourth reversing valve 63;

[0062] The motor group includes a fourth motor group, and the fourth motor group includes a first beating motor 65 and a second beating motor 66. The first beating motor 65 and the second beating motor 66 are located in the sixth pipeline 64, and the first beating motor 65 and the second beating motor 66 are connected in series.

[0063] In this embodiment, the fifth pipeline 54 includes a fifth oil supply circuit 72, a fifth oil return circuit 712, a sixth oil return circuit 710, a seventh pipeline 74, an eighth pipeline 75, a ninth pipeline 78 and a tenth pipeline 76;

[0064] One end of the fifth oil supply circuit 72 is connected to the fifth oil pump 71, and the other end of the fifth oil supply circuit 72 is connected to the control valve. One end of the seventh pipeline 74 is connected to the control valve, and the other end of the seventh pipeline 74 is connected to the first cylinder group 711, and the first cylinder group 711 is connected to the fifth oil return circuit 712; one end of the eighth pipeline 75 is connected to the control valve, and the other end of the eighth pipeline 75 is connected to the second cylinder group 77, and the second cylinder group 77 is connected to one end of the ninth pipeline 78, and the other end of the ninth pipeline 78 is connected to the fifth oil return circuit 712;

[0065] One end of the tenth pipeline 76 is connected to the eighth pipeline 75, and the other end of the tenth pipeline 76 is connected to the third cylinder group 79, and the third cylinder group 79 is connected to the sixth oil return circuit 710, and the fifth oil return circuit 712 and the sixth oil return circuit 710 are connected to the oil tank.

[0066] In this embodiment, the first cylinder group 711 includes a steering cylinder, and the second cylinder group 77 includes a topping lifting cylinder, a root cutting lifting cylinder, and a sugarcane dividing lifting cylinder.

[0067] In this embodiment, the control valve is a priority valve 73, which is used to give priority to supplying oil to the steering cylinder.

[0068] Usage: Start each oil pump, and the hydraulic oil enters each motor group through the oil supply line, and the flow ratio between the branches in the first pipeline system 34 and the second pipeline system 310 is constant through the flow dividing and collecting valve 45 and the gear box 314, so as to ensure the constant motor speed ratio;

[0069] At the same time, the hydraulic oil enters each cylinder group through the fifth oil pump 71. Due to the priority valve 73, the hydraulic oil will be supplied to the steering cylinder first. The hydraulic oil enters the second cylinder group 77 and the third cylinder group 79. The cylinders of the second cylinder group 77 will control the lifting of the corresponding working parts, and the cylinders of the third cylinder group 79 will control the operation of the unloading device.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic system for a whole-stem sugarcane harvester, comprising a main body, characterized in that: The main body includes a walking hydraulic system, a working hydraulic system and an auxiliary hydraulic system. The working hydraulic system includes a plurality of pipeline systems. The pipeline system includes an oil pump, a reversing valve, a motor group, pipelines and a synchronization mechanism for synchronizing the motors. The oil pump, the reversing valve, the motor group and the synchronization mechanism are connected together through pipelines to form a loop. The synchronization mechanism is composed of a flow dividing and collecting valve and a gear box. The motor group includes a root cutting motor, a leaf stripping motor, a conveying motor and a dust removal fan motor. The travel hydraulic system includes a travel pump, a travel motor, a gearbox and a wheel drive. The travel motor is connected to the travel pump through a pipeline, and the travel motor is connected to the gearbox and the wheel drive. The working hydraulic system includes four pipeline systems, namely a first pipeline system, a second pipeline system, a third pipeline system and a fourth pipeline system, and the auxiliary hydraulic system includes a fifth pipeline system, and the first pipeline system, the second pipeline system, the third pipeline system, the fourth pipeline system and the fifth pipeline system are connected in parallel; The first pipeline system includes a first pipeline, a second pipeline, a first oil supply line, a first oil return line, a first branch line, and a second branch line; One end of the first oil supply circuit is connected to the first oil pump, the other end of the first oil supply circuit is connected to the first reversing valve, one end of the first oil return circuit is connected to the oil tank, and the other end of the first oil return circuit is connected to the first reversing valve; One end of the first pipeline is connected to the first reversing valve, the other end of the first pipeline is connected to one end of the first branch and the second branch, one end of the first branch and the second branch is connected to one end of the second pipeline, the other end of the second pipeline is connected to the first reversing valve, wherein the first branch and the second branch are connected in parallel; The motor group includes a first motor group, the first motor group includes a root cutting motor, a first conveying motor and a first leaf stripping motor, the root cutting motor includes an upper root cutting motor and a lower root cutting motor, the first conveying motor includes an upper first conveying motor and a lower first conveying motor, and the first leaf stripping motor includes an upper first leaf stripping motor and a lower first leaf stripping motor; The upper root cutting motor, the upper first conveying motor and the upper first leaf stripping motor are located in the first branch, the lower root cutting motor, the lower first conveying motor and the lower first leaf stripping motor are located in the second branch, the first conveying motor is located behind the root cutting motor, the leaf stripping motor is located behind the conveying motor, and the upper root cutting motor and the lower root cutting motor are respectively connected to the output end of the gear box; The second pipeline system includes a second oil supply circuit, a second oil return circuit, a third pipeline, a fourth pipeline, a third branch circuit and a fourth branch circuit; One end of the second oil supply circuit is connected to the second oil pump, the other end of the second oil supply circuit is connected to the second reversing valve, one end of the second oil return circuit is connected to the oil tank, and the other end of the second oil return circuit is connected to the second reversing valve; One end of the third pipeline is connected to the second reversing valve, the other end of the third pipeline is connected to one end of the third branch and the fourth branch, the other ends of the third branch and the fourth branch are connected to one end of the fourth pipeline, the other end of the fourth pipeline is connected to the second reversing valve, wherein the third branch and the fourth branch are connected in parallel; The motor group includes a second motor group, the second motor group includes a second leaf stripping motor, a second conveying motor and a dust removal fan motor, the second leaf stripping motor includes an upper second leaf stripping motor and a lower second leaf stripping motor, and the second conveying motor includes an upper second conveying motor and a lower second conveying motor; The upper second leaf stripping motor, the upper second conveying motor and the impurity removal fan motor are located in the third branch, the lower second leaf stripping motor is located in the fourth branch, the second conveying motor is located behind the second leaf stripping motor, and the impurity removal fan motor is located behind the second leaf stripping motor; a diversion and collecting valve is provided on the third pipeline.

2. The hydraulic system of a whole-stalk sugarcane harvester according to claim 1, characterized in that: The third pipeline system includes a third oil supply circuit, a third oil return circuit and a fifth pipeline, one end of the third oil supply circuit is connected to the third oil pump, the other end of the third oil supply circuit is connected to the third reversing valve, one end of the third oil return circuit is connected to the oil tank, the other end of the third oil return circuit is connected to the third reversing valve, one end of the fifth pipeline is connected to the reversing valve, and the other end of the fifth pipeline is also connected to the reversing valve; The motor group includes a third motor group, the third motor group includes a sugarcane sorting motor, the sugarcane sorting motor includes an inner sugarcane sorting motor and an outer sugarcane sorting motor, the inner sugarcane sorting motor and the outer sugarcane sorting motor are connected in series, the inner sugarcane sorting motor includes a left inner sugarcane sorting motor and a right inner sugarcane sorting motor, and the outer sugarcane sorting motor includes a left outer sugarcane sorting motor and a right outer sugarcane sorting motor.

3. The hydraulic system of a whole-stalk sugarcane harvester according to claim 1, characterized in that: The fourth pipeline system includes a fourth oil supply circuit, a fourth oil return circuit and a sixth pipeline, one end of the fourth oil supply circuit is connected to the fourth oil pump, the other end of the fourth oil supply circuit is connected to the fourth reversing valve, one end of the fourth oil return circuit is connected to the oil tank, the other end of the fourth oil return circuit is connected to the fourth reversing valve, one end of the sixth pipeline is connected to the fourth reversing valve, and the other end of the sixth pipeline is also connected to the fourth reversing valve; The motor group includes a fourth motor group, and the fourth motor group includes a first topping motor and a second topping motor. The first topping motor and the second topping motor are located in a sixth pipeline, and the first topping motor and the second topping motor are connected in series.

4. The hydraulic system of a whole-stalk sugarcane harvester according to claim 1, characterized in that: The fifth pipeline includes a fifth oil supply pipeline, a fifth oil return pipeline, a sixth oil return pipeline, a seventh pipeline, an eighth pipeline, a ninth pipeline and a tenth pipeline; One end of the fifth oil supply circuit is connected to the fifth oil pump, the other end of the fifth oil supply circuit is connected to the control valve, one end of the seventh pipeline is connected to the control valve, the other end of the seventh pipeline is connected to the first cylinder group, the first cylinder group is connected to the fifth oil return circuit, one end of the eighth pipeline is connected to the control valve, the other end of the eighth pipeline is connected to the second cylinder group, the second cylinder group is connected to one end of the ninth pipeline, the other end of the ninth pipeline is connected to the fifth oil return circuit; One end of the tenth pipeline is connected to the eighth pipeline, the other end of the tenth pipeline is connected to the third cylinder group, the third cylinder group is connected to the sixth oil return circuit, and the fifth and sixth oil return circuits are connected to the oil tank.

5. The hydraulic system of a whole-stalk sugarcane harvester according to claim 4, characterized in that: The first oil cylinder group includes a steering oil cylinder, and the second oil cylinder group includes a topping lifting oil cylinder, a root cutting lifting oil cylinder and a sugarcane dividing lifting oil cylinder.

6. The hydraulic system of a whole-stalk sugarcane harvester according to claim 5, characterized in that: The control valve is a priority valve, which is used to give priority to supplying oil to the steering cylinder.

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