CN220581393U - Hydraulic system of sugarcane cutting and piling machine - Google Patents

Abstract

The utility model discloses a hydraulic system of a sugarcane cutting and piling machine, which comprises a cutting and piling machine and a hydraulic system for controlling the cutting and piling machine to operate, wherein the hydraulic system comprises a walking hydraulic system, a working device hydraulic system and an auxiliary device hydraulic system; the walking hydraulic system is used for controlling the movement of the pile cutting machine, the working device hydraulic system controls the driving motors of the root cutting device, the sugarcane supporting device, the conveying mechanism and the tip cutting device of the pile cutting machine to work through a plurality of working motor control systems, and the auxiliary device hydraulic system controls the cylinders of the root cutting device, the sugarcane supporting device, the tip cutting device and the discharging device of the pile cutting machine to work.

Description

Hydraulic system of sugarcane cutting and piling machine

Technical Field

The utility model relates to a hydraulic system of a sugarcane cutting and piling machine.

Background

At present, in order to meet the requirements of sugar factories, the harvesting of sugarcane in China is mainly performed manually, mainly performed by manual felling and shipping, and the problems of high labor intensity, low harvesting efficiency and high labor cost exist in the mode of partially performing manual felling and mechanical shipping, so that the profit of the seed sugarcane is reduced, and the planting rate is lower and lower.

When the cut-off type sugarcane harvester is used for harvesting part of sugarcane, the sugarcane is harvested into sections, the cut-off ports are more, the sugarcane is not convenient to store, the sugarcane is squeezed soon after being sent to a sugar mill, the cut-off type sugarcane harvester is high in harvesting efficiency and low in harvesting cost, but the harvested sugarcane cannot be stored for a long time, the requirement of the sugar mill cannot be met, and the cut-off type sugarcane harvester is also a main reason that the yield of the sugarcane harvester is not high.

In summary, the market currently promotes the sugarcane fractional harvesting, stacks the whole sugarcane in the ground after harvesting, and carries out cleaning or manual treatment after the whole sugarcane is transported away, so that the sugarcane harvesting efficiency can be improved, the labor intensity of people can be reduced, the sugarcane planting cost can be reduced, the income of a planter can be increased, and the requirements of a sugar refinery can be met.

The sugarcane cutting and stacking machine is a machine for completing sugarcane harvesting and stacking, the sugarcane is cut off from the root during harvesting, enters a feed box through a conveying part, and is poured into the ground after the feed box is full, so that a sugarcane stack is formed. Only the dead leaves and the tips of the sugarcane are basically treated in the harvesting process, so that the integrity of the outer skin of the sugarcane is ensured, the harvesting loss is less, and the storage is facilitated.

Because the sugarcane cutting and piling machine has a plurality of working parts and complex structure and movement, the hydraulic control and driving of the working parts are adopted to realize different working actions, and a set of reliable and stable hydraulic system is important for ensuring the normal work of the machine.

The utility model comprises the following steps:

the utility model aims to solve the defects in the prior art and provides a hydraulic system of a sugarcane cutting and piling machine.

The hydraulic system comprises a walking hydraulic system, a working device hydraulic system and an auxiliary device hydraulic system;

the walking hydraulic system is used for controlling the movement of the pile cutting machine, the working device hydraulic system controls the driving motors of the root cutting device, the sugarcane supporting device, the conveying mechanism and the tip cutting device of the pile cutting machine to work through a plurality of working motor control systems, and the auxiliary device hydraulic system controls the cylinders of the root cutting device, the sugarcane supporting device, the tip cutting device and the discharging device of the pile cutting machine to work.

Working principle: the hydraulic system is divided into three parts, the pile cutting machine is controlled to move through the walking hydraulic system, the driving motor is controlled to work through the hydraulic system of the working device, so that the root cutting device is used for cutting off the root of sugarcane, the sugarcane supporting device is used for supporting lodged sugarcane, the conveying mechanism is used for conveying the sugarcane into the feed box, the tip cutting device is used for cutting off the tip of the sugarcane, the auxiliary device hydraulic system is used for controlling the cylinders of the root cutting device, the tip cutting device and the discharging device to work, the cutting device and the tip cutting device are used for adapting to the sugarcane with different heights, and the discharging device is outwards extended and opened to the box door for discharging.

In order to ensure that the hydraulic system of the working device can stably work, the hydraulic system of the working device comprises a first oil pump, the first oil pump comprises an oil inlet, a first oil delivery port and a second oil delivery port, the oil inlet is connected with an oil cylinder, the first oil delivery port is connected with a first working motor control system, the second working motor control system is connected with the first working motor control system in series, hydraulic oil passes through the first working motor control system through the first oil delivery port and then enters the second motor control system and finally returns to the oil tank, the second working motor control system is connected with the hydraulic oil cylinder through an oil return channel, the second oil delivery port is connected with a third working motor control system, and the hydraulic oil passes through the third working motor control system through the second oil delivery port and then returns to the hydraulic oil cylinder through the oil return channel;

the first working motor control system comprises a first control valve group and a first motor group, the second working motor control system comprises a second control valve group and a second motor group, the third working motor control system comprises a third control valve group and a third motor group, the reversing valve group can control the steering of the motor group, and the motor is controlled to rotate forward or reverse according to actual conditions.

In order to prevent the motor from rotating too fast, at least one of the first oil conveying port and the second oil conveying port is provided with a bypass valve, the bypass valve is connected with the hydraulic oil cylinder through an oil return path, when the motor rotates too fast, the bypass valve is opened, and a part of hydraulic oil returns to the hydraulic oil cylinder through the bypass valve so as to reduce the circulating oil quantity.

In order to prevent excessive hydraulic pressure from causing system heating, safety valves are arranged in the first control valve group, the second control valve group and the third control valve group.

In order to control the moving speed conveniently, the walking hydraulic system is controlled by an inorganic speed changer.

In order to ensure that the hydraulic system of the auxiliary device can stably control the corresponding oil cylinders to work, the hydraulic system of the auxiliary device comprises a second oil pump, an oil inlet of the second oil pump is connected with the oil cylinders, an oil outlet of the second oil pump is connected with a first auxiliary oil inlet path and a second auxiliary oil inlet path, the first auxiliary oil inlet path is connected with a plurality of reversing valves, the reversing valves are connected in parallel, the reversing valves respectively control the oil cylinders of the root cutting device, the tip cutting device, the sugarcane supporting device and the discharging device to work, and the reversing valves are connected with the hydraulic oil cylinders through oil return paths; after entering the first auxiliary oil inlet path, hydraulic oil flows into the oil cylinders respectively and returns to the hydraulic oil cylinders through the oil return paths;

the second auxiliary oil inlet path is connected with two integrated valves, the two integrated valves respectively control a steering oil cylinder and a header oil cylinder of the pile cutting machine, and the two integrated valves are connected with the hydraulic oil cylinder through oil return paths respectively.

In order to prevent the hydraulic pressure from being too high, a safety valve is arranged at the oil inlet of the second oil pump.

The beneficial effects are that: compared with the prior art, the utility model is a hydraulic system special for a pile cutting machine, the hydraulic system is divided into three parts, the pile cutting machine is controlled to move through a traveling hydraulic system, a driving motor is controlled to work through a working device hydraulic system, so that the root of sugarcane is cut off by a root cutting device, a sugarcane supporting device supports the lodged sugarcane, a conveying mechanism conveys the sugarcane into a feed box, a tip cutting device cuts off the tip of the sugarcane, an auxiliary device hydraulic system is used for controlling the cylinders of the root cutting device, the tip cutting device and a discharging device to work, so that the cutting device and the tip cutting device are suitable for the sugarcanes with different heights, and the discharging device is outwards extended and opened to discharge by opening a box door;

the whole hydraulic system is mature and stable, the action response is sensitive, and the action control and the sugarcane harvesting can be efficiently completed.

Drawings

FIG. 1 is a schematic illustration of a work device hydraulic system and an auxiliary device hydraulic system;

FIG. 2 is a schematic diagram of a travel hydraulic system;

FIG. 3 is a front view of the pile cutting machine;

FIG. 4 is a top view of the pile cutting machine;

in the figure, 1, a hydraulic cylinder, 2, a first oil delivery port, 3, a second oil delivery port, 4, a first control valve group, 5, a second control valve group, 6, a third control valve group, 7, a first motor, 8, a second motor, 9, a third motor, 10, a fourth motor, 11, a fifth motor, 12, a sixth motor, 13, a seventh motor, 14, an eighth motor, 15, a ninth motor, 16, a tenth motor, 17, an eleventh motor, 18, a twelfth motor, 19, a bypass valve, 20, a second oil pump, 21, a first auxiliary oil inlet path, 22, a second auxiliary oil inlet path, 23, an oil cylinder of a steering mechanism, 24, an oil cylinder of a cutting table, 25, an oil cylinder of a discharging device, 26, a sugarcane supporting device, 27, a front conveying mechanism, 28, a main conveying structure, 29, a tip cutting device, 30, a feed box, 31, a chassis, 32, a root cutting device, 33, a cutting table, 34 and an oil cylinder.

Detailed Description

The present utility model will be further described in detail with reference to the following examples and drawings for the purpose of enhancing the understanding of the present utility model, which examples are provided for the purpose of illustrating the present utility model only and are not to be construed as limiting the scope of the present utility model.

Embodiment one: the whole structure of the pile cutting machine is as follows:

3-4, sugarcane supporting device 26, front conveying mechanism 27, main conveying structure 28, tip cutting device 29, feed box 30, chassis 31, root cutting device 32, cutting table 33 and oil cylinder 34;

the caterpillar self-propelled sugarcane cutting and piling machine comprises a chassis 31, a header 33, a root cutting device 32, a sugarcane supporting device 26, a tip cutting device 29, a front conveying mechanism 27, a rear conveying mechanism and a discharging device, wherein the header 33 is arranged at the front end of the chassis 31, the root cutting device 32 is arranged below the header 33, the root cutting device 32 is used for cutting off the root of sugarcane,

the sugarcane holding device 26 is arranged at the front section of the cutting table 33 and positioned in front of the root cutting device 32, the sugarcane holding device 26 is used for holding up lodged sugarcane, the front conveying mechanism 27 is arranged on the cutting table 33 and positioned behind the sugarcane holding device 26, the front conveying mechanism 27 is used for conveying the root-cut sugarcane into the rear conveying mechanism,

the rear conveying mechanism is arranged on the chassis 31 and is positioned behind the front conveying mechanism 27, the rear conveying mechanism is used for conveying the sugarcane into the unloading device, the tip cutting device 29 is arranged above the rear conveying mechanism, and the tip cutting device 29 is used for cutting off the tips of the sugarcane; specifically, the pile cutting machine completes the work of cane supporting, root cutting, conveying, tip cutting and discharging through a series of mechanisms, thereby completing the recovery work of the cane.

In this embodiment, the root cutting device 32 includes two root cutting assemblies that are driven independently, the root cutting assemblies include a motor for driving, a box, a cutter shaft and a first cutter head, and the lengths of the cutter shafts in each root cutting assembly are different, and the motor drives the first cutter head to rotate for cutting.

In this embodiment, the sugarcane supporting device 26 includes two supporting mechanisms and an angle adjusting mechanism, the two supporting mechanisms are placed opposite to each other, the supporting mechanism includes a sprocket structure and a plurality of chain plates, the chain plates are fixed at equal intervals on the outer side of the sprocket structure, and the angle adjusting mechanism is used for adjusting the working angle of the supporting mechanism;

the angle adjusting mechanism comprises a first bracket, a second bracket and an oil cylinder 34; the first support is used for installing a lifting mechanism, the first support is hinged with the second support, two ends of the second support are respectively provided with a connecting plate, at least one connecting plate is provided with a plurality of holes, the second support is fixedly connected with the main frame of the cutting table 33, the oil cylinder 34 is fixed on the second support, and the floating joint of the oil cylinder 34 is connected with the first support;

specifically, the chain wheel mechanism comprises a driving gear and a driven gear, the driving gear and the driven gear are respectively positioned at two ends of the chain wheel mechanism and are connected through a chain, a chain plate is fixed with the chain through a bolt, the driving gear is connected with a driving motor, and the driving motor drives the driving gear to rotate;

the second bracket passes through the connecting plate and is fixedly connected with the main frame of the header 33 through bolts, the connecting plate at the left end of the second bracket is provided with only one hole site, the connecting plate at the right end is provided with a plurality of hole sites, the working angle in the length direction of the lifting mechanism can be finely adjusted through the bolt connection with different hole sites, the main body of the oil cylinder 34 is arranged on the second bracket, the floating joint of the oil cylinder 34 is connected with the bottom of the first bracket, the structure in the width direction of the lifting mechanism can be adjusted through the expansion and the contraction of the floating joint,

when the sugarcane is lodged left and right, the sugarcane supporting chains on the left and right sides are opened to the maximum state (the shortest state of the oil cylinder) under the action of the oil cylinder 34; when the sugarcane falls in the opposite direction of the machine harvesting operation, the sugarcane supporting chains at the left side and the right side are closed to the minimum state (the longest state of the oil cylinder) under the action of the oil cylinder 34; in the whole operation process, the sugarcane supporting chain can be adjusted between the shortest and longest states of the oil cylinder 34 according to the actual lodging condition of sugarcane, so that a better harvesting effect is achieved;

in this embodiment, the tip cutting mechanism comprises a second mounting frame, a tip cutting mechanism and a lifting mechanism, the tip cutting device 29 is used for cutting and throwing the tip of the sugarcane, the lifting mechanism comprises guide rails, oil cylinders 34, a first connecting rod and a second connecting rod, the guide rails are vertically arranged on the second mounting frame, the number of the guide rails is two, the guide rails are arranged on two sides of the tip cutting mechanism, a rotating shaft is arranged on the second mounting frame, one end of the first connecting rod is fixedly sleeved on the rotating shaft, the other end of the first connecting rod is hinged with one end of the second connecting rod, the other end of the second connecting rod is hinged with the tip cutting mechanism, one end of the rotating shaft is fixedly connected with one end of a lever, a floating joint of the oil cylinder 34 is connected with the other end of the lever, the oil cylinder push-pull lever drives the rotating shaft to rotate,

the tip cutting mechanism comprises a frame, two tip poking wheels and a second cutter disc, wherein the number of the tip poking wheels is two, the two tip poking wheels are symmetrically arranged on the frame, the second cutter disc is arranged between the two tip poking wheels, the second cutter disc is used for cutting off the tips of sugarcane, and the tip poking wheels are used for throwing away the cut tips; the frame is also provided with a pulley, and the tip cutting mechanism slides along the guide rail through the pulley;

specifically, one end of the lever is fixedly sleeved at one end of the rotating shaft, a floating joint of the oil cylinder 34 acts on the other end of the lever to control the rotating shaft to rotate anticlockwise or clockwise so as to control the tip cutting mechanism to ascend or descend; the pin-pulling wheel is symmetrically arranged along the center line of the frame, the upper end and the lower end of the pin-pulling wheel are provided with two pin-pulling wheel discs, saw-tooth structures are arranged at the outer sides of the pin-pulling wheel discs at equal intervals, the pin-pulling wheel and the second cutter disc are driven by independent motors, wherein the motors for driving the second cutter disc can rotate in the forward direction or the reverse direction, so that the cut pin part can be thrown out leftwards or rightwards according to the actual situation,

the lifting mechanism is used for controlling the tip cutting mechanism to lift and is a transmission mechanism composed of a rotating shaft, a first connecting rod and a second connecting rod, and the guide rails on two sides are used for clamping the tip cutting mechanism, so that the tip cutting mechanism is prevented from shaking in the lifting process and the tip cutting process.

In this embodiment, the rear conveying mechanism comprises a main conveying structure and an auxiliary conveying structure, and the main conveying structure 28 and the front conveying mechanism 27 are composed of two opposite rubber plate conveying chains which are mutually connected, and the two rubber plate conveying chains rotate in opposite directions to convey sugarcane;

the auxiliary conveying structure is positioned below the main conveying structure, the auxiliary conveying structure is a conveying belt mechanism, the conveying belt mechanism comprises a driving roller, a driven roller and a conveying belt, the driving roller and the driven roller are positioned at two ends of the whole conveying belt mechanism, the driving roller and the driven roller are connected through the conveying belt, the driving roller is connected with a motor,

the main conveying structure and the auxiliary conveying structure are matched to convey sugarcane, the motor controls the auxiliary conveying structure to act through forward rotation and reverse rotation, the conveying speeds of the main conveying structure and the auxiliary conveying structure are matched,

specifically, the main conveying mechanism and the auxiliary conveying mechanism are both arranged on the frame, the main conveying mechanism clamps the upper section of the sugarcane and conveys the sugarcane, the auxiliary conveying mechanism is a conveying belt, the sugarcane is vertically supported on the conveying belt, the conveying belt drives the sugarcane to move through friction, and the conveying speeds of the main conveying mechanism and the auxiliary conveying mechanism are matched, so that the sugarcane is relatively static in the two conveying structures.

The motor drives the driving roller to rotate, so that the driven roller is driven to rotate together, and then the conveying belt is driven to move, and the friction force is used for providing power for the bottom of the sugarcane.

In this embodiment, the discharging device includes a bin 30 and a retracting mechanism, the bottom of the bin 30 is in an openable structure, the bottom of the bin 30 is controlled to open and close by a first driving device, the retracting mechanism is used for retracting and retracting the bin 30, and the retracting mechanism is controlled to act by a second driving device; specifically, the retraction device is fixed on the frame and is connected with the feed box 30.

In this embodiment, the openable structure comprises two doors, the outer sides of which are hinged to two sides of the bottom of the bin 30; the first driving device is a first oil cylinder, a base of the first oil cylinder is fixed on the feed box 30, a floating joint of the first oil cylinder is hinged with one end of a connecting plate, the other end of the connecting plate is fixedly connected with a door, specifically, the base of the first oil cylinder is fixed on two sides of the feed box 30, the force of the oil cylinder 34 is transmitted to the door through the connecting plate, the direction of the force is changed, the direction of the floating joint of the first oil cylinder is downward, the oil cylinder 34 applies force to one end of the connecting plate, the other end of the connecting plate is fixed with the door, when the oil cylinder 34 contracts, one end of the connecting plate is pulled to rise, and the other end of the connecting plate descends correspondingly, and drives the door to be opened; conversely, when the cylinder 34 extends, one end of the connecting plate is pushed down, and the other end of the connecting plate is raised to drive the door to close.

In this embodiment, the retraction mechanism includes a third connecting rod and a fourth connecting rod, one ends of the third connecting rod and the fourth connecting rod are hinged on the frame, the other ends are hinged with the feed box 30, and the four-rod mechanism is formed by the third connecting rod, the fourth connecting rod, the feed box 30 and the frame; the second driving device is a second oil cylinder, a floating joint of the second oil cylinder is connected with one of the feed box 30, a third connecting rod and a fourth connecting rod, the frame is a frame in the four-bar mechanism, the third connecting rod and the fourth connecting rod are side link rods in the four-bar mechanism, the feed box 30 is a connecting rod in the four-bar mechanism, the connecting rod is a crank connected with the oil cylinder 34, in the embodiment, the third connecting rod is a crank, the fourth connecting rod is a rocker, the connection part of the third connecting rod and the feed box 30 is positioned at the left end of the feed box 30, the connection part of the fourth connecting rod and the feed box 30 is positioned at the right end of the feed box 30, the third connecting rod and the fourth connecting rod are connected with two sides of the feed box 30, the base of the second oil cylinder is connected with the frame, and the floating joint of the floating joint is connected with the middle section of the third connecting rod.

Specific working procedure of this example: firstly, the lodged sugarcane is supported by the sugarcane supporting mechanism, the root of the sugarcane is cut off by the sugarcane supporting mechanism, the sugarcane is clamped and conveyed to the rear conveying mechanism by the front conveying mechanism 27, the sugarcane is continuously conveyed by the cooperation of the main conveying structure and the auxiliary conveying structure, the tip of the sugarcane is cut off and thrown away by the tip cutting device 29 in the process and conveyed into the feed box 30, at the moment, the first connecting rod is driven by the second oil cylinder to discharge the feed box 30, meanwhile, the second oil cylinder is contracted upwards, the door at the bottom of the feed box 30 is controlled to be opened for discharging, after discharging is completed, the second oil cylinder is pushed downwards to control the door at the bottom of the feed box 30 to be closed, meanwhile, the retraction of the first oil cylinder drives the retraction mechanism to retract and reset the material, and the next harvesting work is carried out.

Embodiment two: and (3) a hydraulic system:

as shown in fig. 1-2, a hydraulic cylinder 1, a first oil delivery port 2, a second oil delivery port 3, a first control valve group 4, a second control valve group 5, a third control valve group 6, a first motor 7, a second motor 8, a third motor 9, a fourth motor 10, a fifth motor 11, a sixth motor 12, a seventh motor 13, an eighth motor 14, a ninth motor 15, a tenth motor 16, an eleventh motor 17, a twelfth motor 18, a bypass valve 19, a second oil pump 20, a first auxiliary oil inlet path 21, a second auxiliary oil inlet path 22, an oil cylinder 23 of a steering mechanism, an oil cylinder 24 of a header, and an oil cylinder 25 of a discharging device;

the hydraulic system comprises a walking hydraulic system, a working device hydraulic system and an auxiliary device hydraulic system;

the walking hydraulic system is used for controlling the movement of the pile cutting machine, the working device hydraulic system controls the root cutting device 32, the sugarcane supporting device 26, the conveying mechanism and the driving motor of the tip cutting device 29 to work through the plurality of working motor control systems, the auxiliary device hydraulic system controls the root cutting device 32, the sugarcane supporting device 26, the tip cutting device 29 and the oil cylinder 25 of the discharging device of the pile cutting machine to work, specifically, the working device hydraulic system controls the cutter disc of the root cutting device 32 to rotate for cutting, controls the lifting mechanism of the sugarcane supporting device 26 to work, controls the stirring type conveying chain of the front conveying mechanism 27 and the main conveying structure 28 to work, controls the conveying belt mechanism of the auxiliary conveying structure to work, controls the cutter disc and the tip poking wheel of the tip cutting device 29 to work, controls the auxiliary device hydraulic system controls the tip cutting device 29 and the oil cylinder 34 of the root cutting device 32 to work to lift and adapt to sugarcane with different heights, controls the oil cylinder 34 of the sugarcane supporting device 26 to work to adapt to sugarcane with different lodging conditions to realize the action that the bin 30 extends outwards and the bin door is opened.

In this embodiment, the hydraulic system of the working device includes a first oil pump, the first oil pump includes an oil inlet, a first oil delivery port 2 and a second oil delivery port 3, the oil inlet is connected with the oil cylinder 34, the first oil delivery port 2 is connected with a first working motor control system, the second working motor control system is connected with the first working motor control system in series, the second working motor control system is connected with the hydraulic oil cylinder 1 through an oil return path, the second oil delivery port is connected with a third working motor control system, and the third working motor control system is connected with the hydraulic oil cylinder 1 through an oil return path;

the first working motor control system comprises a first control valve group 4 and a first motor group, the second working motor control system comprises a second control valve group 5 and a second motor group 8, and the third working motor control system comprises a third control valve group 6 and a third motor group 9;

specifically, the third motor 9 group comprises a first motor 7, a second motor 8, a third motor 9, a fourth motor 10, a fifth motor 11 and a sixth motor 12, wherein the first motor 7 and the second motor 8 control the root cutting device 32, the third motor 9 and the fourth motor 10 control the conveying chain of the front conveying mechanism 27, the fifth motor 11 and the sixth motor 12 control the conveying chain of the main conveying mechanism 28, and the first motor 7, the third motor 9, the fifth motor 11, the second motor 8, the fourth motor 10 and the sixth motor 12 are connected in series and then connected in parallel respectively,

the left and right parts of the conveying chains of the front conveying mechanism 27 and the main conveying structure 28 are tightly combined and have long length, so that synchronous transmission can be realized by means of mutual friction force in the working process, the rotation speeds of the third motor 9, the fourth motor 10, the fifth motor 11 and the sixth motor 12 are synchronous, the first motor 7 and the second motor 8 are respectively connected with the third motor 9, the fifth motor 11 and the fourth motor 10 and the sixth motor 12 in series, the rotation speeds of the six motors are synchronous by utilizing the same flow of the oil paths in series, the rotation speeds of the hydraulic motors of the root cutting device 32 and the conveying mechanism are synchronous by the mutual constraint of the front conveying mechanism 27 and the main conveying structure 28, the first control valve group 4 controls the rotation direction of the whole first motor group through a reversing valve, the reversing valve is connected with two ends of the first motor group through an oil path, the reversing valve is provided with an oil inlet path between the reversing valve and a second oil conveying port, and an oil return path is provided between the reversing valve and an oil cylinder;

the first motor group comprises a seventh motor 13, an eighth motor 14 and a ninth motor 15, the first control valve group 5 comprises two reversing valves, namely a first reversing valve and a second reversing valve, the first reversing valve controls the seventh motor 13, the second reversing valve controls the eighth motor 14 and the ninth motor 15, the seventh motor 13 controls the conveyer belt structure of the auxiliary conveying structure to work, the eighth motor 14 and the ninth motor 15 control the lifting mechanism of the sugarcane supporting device 26 to work, and the eighth motor 14 and the ninth motor 15 enable the oil quantity passing through the two motors to be the same through a flow dividing and collecting valve so as to realize rotation speed synchronization; the first oil delivery port is connected with the first reversing valve through an oil inlet path, two ends of the first reversing valve and the seventh motor are respectively connected through an oil path, the first reversing valve is connected with the second reversing valve, the second reversing valve is connected with the flow distribution and collection valve, the oil path of the flow distribution and collection valve is divided into two paths and is simultaneously connected with one ends of the eighth motor and the ninth motor, the other ends of the eighth motor and the ninth motor are simultaneously connected with the second reversing valve, and the first working motor control system is connected with the reversing valve of the second working motor control system in series through the second reversing valve;

the second motor 8 group comprises a tenth motor 16, an eleventh motor 17 and a twelfth motor 18, the tenth motor 16 and the eleventh motor 17 control a tip poking wheel, the twelfth motor 18 controls a tip cutting cutter disc, the second control valve group 5 comprises two reversing valves, one is a main reversing valve and the other is an auxiliary reversing valve, the main reversing valve is connected with the second reversing valve, the main reversing valve is connected with the auxiliary reversing valve, the main reversing valve is connected with an oil cylinder through an oil return path, the two ends of the auxiliary reversing valve and the twelfth motor are respectively connected through an oil path, the tenth motor and the eleventh motor are connected in series, one of the tenth motor and the eleventh motor is connected with the auxiliary reversing valve, the other is connected with the oil cylinder through an oil return path, and the auxiliary reversing valve controls the steering of the twelfth motor 18, and the specific connecting structure is shown in fig. 1.

In this embodiment, at least one of the first oil delivery port 2 and the second oil delivery port 3 is provided with a bypass valve 19, the bypass valve 19 is connected with the hydraulic cylinder 1 through an oil return path, specifically, the bypass valve 19 is disposed at the second oil delivery port 3, when the motor rotation speed of the conveying mechanism part is too fast, a part of hydraulic oil can be directly discharged back to the oil tank through adjusting the bypass valve 19, so that the rotation speed is reduced to a proper range, and the speed regulation of the bypass valve 19 is used to regulate the speed without causing the pressure reduction of a working loop and affecting harvesting.

In this embodiment, safety valves are disposed in the first control valve set 4, the second control valve set 5 and the third control valve set 6.

In the present embodiment, the traveling hydraulic system is controlled by an inorganic transmission, specifically, the displacement of the continuously variable transmission is 45tfsi, and the specific structure is referred to fig. 2.

In this embodiment, the auxiliary device hydraulic system includes a second oil pump 20, an oil inlet of the second oil pump 20 is connected to an oil cylinder 34, an oil outlet of the second oil pump 20 is connected to a first auxiliary oil inlet path 21 and a second auxiliary oil inlet path 22, the first auxiliary oil inlet path 21 is connected to a plurality of reversing valves, the plurality of reversing valves are connected in parallel, the plurality of reversing valves respectively control the root cutting device 32, the tip cutting device 29, the sugarcane supporting device 26 and the oil cylinder 25 of the discharging device to work, and the reversing valves are all connected to the hydraulic oil cylinder 1 through oil return paths;

the second auxiliary oil inlet path 22 is connected with two integrated valves, the two integrated valves respectively control a steering oil cylinder and a header oil cylinder of the pile cutting machine, and the two integrated valves are connected with the hydraulic oil cylinder 1 through oil return paths respectively;

specifically, after the auxiliary oil pump pumps hydraulic oil, the auxiliary oil pump is divided into two paths, one path is led to the oil cylinder 23 of the steering mechanism and the oil cylinder 24 of the cutting table, the other path is led to the oil cylinders 34 of each working device, wherein two oil cylinders 25 of the unloading device are used for controlling the extension and retraction of the feed box 30 and controlling the opening and closing of the bottom box door of the feed box 30, the two actions are sequentially arranged, so that the two oil cylinders 34 of the unloading device are controlled to sequentially perform the unloading and resetting actions through the sequence valve, and the specific structure is shown in fig. 1.

In this embodiment, a relief valve is disposed at the oil inlet of the second oil pump 20.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (7)

1. The hydraulic system of the sugarcane cutting and piling machine is characterized by comprising a cutting and piling machine and a hydraulic system for controlling the cutting and piling machine to operate, wherein the hydraulic system comprises a walking hydraulic system, a working device hydraulic system and an auxiliary device hydraulic system;

the walking hydraulic system is used for controlling the movement of the pile cutting machine, the working device hydraulic system controls the driving motors of the root cutting device, the sugarcane supporting device, the conveying mechanism and the tip cutting device of the pile cutting machine to work through a plurality of working motor control systems, and the auxiliary device hydraulic system controls the cylinders of the root cutting device, the sugarcane supporting device, the tip cutting device and the discharging device of the pile cutting machine to work.

2. The hydraulic system of the sugarcane cutting and stacking machine according to claim 1, wherein the hydraulic system of the working device comprises a first oil pump, the first oil pump comprises an oil inlet, a first oil delivery port and a second oil delivery port, the oil inlet is connected with an oil cylinder, the first oil delivery port is connected with a first working motor control system, the second working motor control system is connected with the first working motor control system in series, the second working motor control system is connected with the hydraulic oil cylinder through an oil return path,

the second oil conveying port is connected with a third working motor control system, and the third working motor control system is connected with the hydraulic cylinder through an oil return path;

the first working motor control system comprises a first control valve group and a first motor group, the second working motor control system comprises a second control valve group and a second motor group, and the third working motor control system comprises a third control valve group and a third motor group.

3. The hydraulic system of the sugarcane cutting and stacking machine according to claim 2, wherein at least one of the first oil conveying port and the second oil conveying port is provided with a bypass valve, and the bypass valve is connected with the hydraulic cylinder through an oil return channel.

4. The hydraulic system of the sugarcane cutting and stacking machine according to claim 2, wherein the first control valve group, the second control valve group and the third control valve group are respectively provided with a safety valve.

5. The hydraulic system of a sugarcane cutting and piling machine according to claim 1, wherein the walking hydraulic system is controlled by an inorganic transmission.

6. The hydraulic system of the sugarcane cutting and piling machine according to claim 1, wherein the auxiliary device hydraulic system comprises a second oil pump, an oil inlet of the second oil pump is connected with an oil cylinder, an oil outlet of the second oil pump is connected with a first auxiliary oil inlet path and a second auxiliary oil inlet path, the first auxiliary oil inlet path is connected with a plurality of reversing valves, the reversing valves are connected in parallel, the reversing valves respectively control the oil cylinders of the root cutting device, the tip cutting device, the sugarcane supporting device and the discharging device to work, and the reversing valves are connected with the hydraulic oil cylinder through oil return paths;

the second auxiliary oil inlet passage is connected with two integrated valves, the two integrated valves respectively control a steering oil cylinder and a header oil cylinder of the pile cutting machine, and the two integrated valves are connected with the hydraulic oil cylinder through oil return passages respectively.

7. The hydraulic system of the sugarcane cutting and stacking machine according to claim 6, wherein a safety valve is arranged at an oil inlet of the second oil pump.