CN110972672B - Potato combine harvester with self-adjusting balance system and application thereof - Google Patents
Potato combine harvester with self-adjusting balance system and application thereof Download PDFInfo
- Publication number
- CN110972672B CN110972672B CN201911413146.8A CN201911413146A CN110972672B CN 110972672 B CN110972672 B CN 110972672B CN 201911413146 A CN201911413146 A CN 201911413146A CN 110972672 B CN110972672 B CN 110972672B
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- frame
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- hinged
- hydraulic cylinder
- lifting hydraulic
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- 244000061456 Solanum tuberosum Species 0.000 title claims abstract description 47
- 235000002595 Solanum tuberosum Nutrition 0.000 title claims abstract description 47
- 230000008602 contraction Effects 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 20
- 230000002457 bidirectional effect Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003306 harvesting Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 235000012015 potatoes Nutrition 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D13/00—Diggers, e.g. potato ploughs
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D33/00—Accessories for digging harvesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/016—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
- B60G17/0165—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input to an external condition, e.g. rough road surface, side wind
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/019—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the type of sensor or the arrangement thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/06—Characteristics of dampers, e.g. mechanical dampers
- B60G17/08—Characteristics of fluid dampers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Harvester Elements (AREA)
Abstract
The invention relates to a potato combine harvester with a self-adjusting balance system and application thereof, wherein the potato combine harvester comprises a frame, a left land wheel and a right land wheel; the left ground wheel is hinged with the bottom end of a left support frame through a left support beam, and the top end of the left support frame is hinged with the left side of the bottom of the frame; the right ground wheel is hinged with a piston rod of a frame lifting hydraulic cylinder through a right supporting beam, a cylinder barrel of the frame lifting hydraulic cylinder is hinged to the right side of the bottom of the frame, and the electrohydraulic valve group, the frame inclination angle sensor and the touch screen are respectively connected with a vehicle body balance controller; according to the invention, a self-adjusting balance system is added on the basis of a traditional potato combine harvester, when the potato combine harvester works on a rugged road surface, the inclination angle information of the frame is obtained through the frame inclination angle sensor, and the expansion and contraction of the frame lifting hydraulic cylinder is regulated by the vehicle body balance controller, so that the frame is kept in a relatively horizontal posture, the potato in the compartment is prevented from being excessively stacked to one side, and the damage rate of the potato is reduced.
Description
Technical Field
The invention relates to a potato combine harvester with a self-adjusting balance system and application thereof, and belongs to the technical field of agricultural mechanical equipment.
Background
At present, china has started a potato staple food strategy, and potatoes become another staple food except rice, wheat and corn. Along with the continuous expansion of potato planting scale in China, the mechanization degree of potato harvesting is continuously improved. The potato combine harvester can realize the operations of one-time excavation, potato soil separation, potato seedling separation, centralized collection and transportation and the like, and has the advantages of high harvesting efficiency and no need of manual pickup. However, due to the fluctuation of the ground during harvesting, the harvester can be inclined, so that the potato group is extruded to one side, the breakage rate is increased, and the space on the other side can not be effectively utilized while the potato group is extruded to one side, so that potato soil can not be separated to the greatest extent in the backward conveying process.
The existing car body balancing technology is mainly applied to large crane, paver and heavy-duty vehicles in the engineering field, radar cars and tanks in the military field, and the control system is complex in structure and large in occupied space. The invention is mainly applied to hilly tractors in the agricultural field, for example, chinese patent document CN106938597a discloses a device for adjusting the posture of a hilly and mountain tractor, wherein the axle adjusting components of the device are symmetrically installed at the bottom of the vehicle body, and the device comprises an axle, a posture adjusting hydraulic cylinder, a stabilizer bar and a variable connecting rod group; the system comprises a vehicle body, an axle, a variable connecting rod group, an electric control hydraulic system, an electronic control hydraulic valve and a control system, wherein the gesture adjustment hydraulic cylinder and the variable connecting rod group are symmetrically hinged between the vehicle body and the axle, the variable connecting rod group consists of two variable connecting rods hinged between the vehicle body and the axle in an up-down parallel mode, the stabilizer bar is installed between the vehicle body and the axle, the electric control hydraulic system consists of a sensor, an information acquisition unit, a gesture controller and the electric control hydraulic valve which are sequentially connected in a signal mode, the electric control hydraulic valve controls the gesture adjustment hydraulic cylinder, and the method sends vehicle gesture information detected by the sensor to the gesture controller through the information acquisition unit so as to control the electric control hydraulic valve to adjust the gesture adjustment hydraulic cylinder, and finally self-adjustment of the vehicle body gesture is achieved. The invention realizes real-time self-adjustment of the body posture of the wheeled vehicle and ensures the running stability.
According to the search, a small number of vehicle body balance adjustment systems are applied to the potato combine at present, so that a self-adjustment balance system is required to be designed and installed on the potato combine, the improved potato combine can self-adjust the vehicle body posture on a rugged road, the vehicle body posture is kept relatively horizontal, and the potato extrusion damage is avoided.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a potato combine harvester with a self-adjusting balance system.
The invention also provides a working method of the potato combine harvester with the self-adjusting balance system.
The technical scheme of the invention is as follows:
a potato combine harvester comprises a frame, a left land wheel and a right land wheel;
the left ground wheel is hinged with the bottom end of a left support frame through a left support beam, and the top end of the left support frame is hinged with the left side of the bottom of the frame; the right land wheel is hinged with a piston rod of a frame lifting hydraulic cylinder through a right supporting beam, a cylinder barrel of the frame lifting hydraulic cylinder is hinged on the right side of the bottom of the frame, one end of the right supporting beam is also hinged with a right supporting frame, and the top end of the right supporting frame is hinged on the right side of the bottom of the frame;
the vehicle frame is provided with a vehicle frame inclination angle sensor, a vehicle body balance controller, a touch screen and an electrohydraulic valve bank, wherein the electrohydraulic valve bank, the vehicle frame inclination angle sensor and the touch screen are respectively connected with the vehicle body balance controller;
the electrohydraulic valve group comprises 1 bidirectional proportional electromagnetic valve and 2 electrohydraulic switch valves, the bidirectional proportional electromagnetic valve and the electrohydraulic switch valves are arranged on the hydraulic oil path of the lifting hydraulic cylinder of the frame, and the bidirectional proportional electromagnetic valve and the electrohydraulic switch valves are connected and controlled by a vehicle body balance controller.
Preferably, the rear end of the right side supporting beam is provided with a land wheel shaft head, and the right side supporting beam is connected with a right side land wheel through the land wheel shaft head; the front end of the right side supporting beam is connected with the right side supporting frame through a round tube.
Preferably, the front end and the rear end of the left supporting beam are hinged with the front end and the rear end of the bottom of the frame through left supporting frames respectively.
Preferably, the length of the left side supporting beam and the right side supporting beam is 1190mm, the width is 120mm, and the height is 200mm.
Preferably, a cylinder barrel of the frame lifting hydraulic cylinder is connected with the bottom of the frame through an upper pin shaft, and the end head of the piston rod is connected with the rear end of the right side supporting beam through a lower pin shaft.
Preferably, the inclination angle sensor of the frame is an LCA310T single-axis voltage output type inclination angle sensor, and the angle range is +/-30 degrees.
Preferably, the frame inclination angle sensor is arranged on the upper surface of the frame and is positioned right above the lifting hydraulic cylinder of the frame.
Preferably, the vehicle body balance controller comprises a power supply module, a proportion conversion module, a level conversion module, a control algorithm module and an electrohydraulic valve group control module; the proportional conversion module is connected with the frame inclination sensor and sends the acquired frame inclination information to the control algorithm module; the level conversion module is respectively connected with the control algorithm module and the electrohydraulic valve group control module, and converts a control signal output by the control algorithm module into a control signal required by the electrohydraulic valve group control module; the electrohydraulic valve group control module is connected with the electrohydraulic valve group; and the power supply module is used for providing power supply voltage required by each module.
The working method of the potato combine harvester comprises the following steps:
in the operation process of the potato combine harvester, when the frame tilts due to the rugged road surface, the frame tilt angle sensor acquires the angle information of the frame tilt and transmits the angle information to the vehicle body balance controller, and after the vehicle body balance controller analyzes the angle information, the vehicle body balance controller issues a command to control the operation of the electrohydraulic valve bank, so that the expansion and contraction of the lifting hydraulic cylinder of the frame are adjusted, and the frame is kept in a relatively horizontal posture.
The invention has the beneficial effects that:
according to the potato combine harvester disclosed by the invention, the self-adjusting balance system is added on the basis of the traditional potato combine harvester, so that when the improved potato combine harvester works on a rugged road surface, the inclination angle information of the frame can be obtained through the frame inclination angle sensor, and the vehicle body balance controller is used for controlling the electrohydraulic valve group to adjust the expansion and contraction of the frame lifting hydraulic cylinder after carrying out data analysis and operation, so that the frame is kept in a relatively horizontal posture, the potato in the compartment is prevented from being excessively piled up to one side, and the damage rate of the potato is reduced.
Drawings
FIG. 1 is a block diagram of a self-adjusting balance system according to the present invention;
fig. 2 is a rear view of the vehicle body in a horizontal state in the present invention;
fig. 3 is a rear view of the vehicle body in a horizontally-oriented left-side inclined state in accordance with the present invention;
fig. 4 is a rear view of the vehicle body in a state in which the vehicle body is inclined horizontally to the right;
FIG. 5 is a block diagram of the body balance controller of the potato combine of the present invention;
FIG. 6 is a wiring diagram of the self-adjusting balancing system of the present invention;
wherein: 1. a frame inclination sensor; 2. frame of potato combine harvester; 3. a frame lifting hydraulic cylinder; 4. a right ground wheel; 5. a right side support beam; 6. a touch screen; 7. a body balance controller; 8. a right side support frame; 9. an electrohydraulic valve group; 10. a left side support frame; 11. a left ground wheel; 12. a left side support beam; 100. a power module; 200. a proportion conversion module; 300. a control algorithm module; 400. a level conversion module; 500. the electrohydraulic valve group control module; 501. an active crystal oscillator; 502. a frequency divider; 503. and a power driving module. 901. A two-way proportional solenoid valve; 902. electrohydraulic switching valve.
Detailed Description
The invention will now be further illustrated by way of example, but not by way of limitation, with reference to the accompanying drawings.
Example 1:
as shown in fig. 1 to 6, the present embodiment provides a potato combine harvester comprising a frame 2, a left ground wheel 11 and a right ground wheel 4; other components of the potato combine harvester are in the prior art, and the improved potato combine harvester of the invention is mainly provided with a self-adjusting balance system on a frame 2, a left land wheel 11 and a right land wheel 4;
the left ground wheel 11 is hinged with the bottom end of a left support frame 10 through a left support beam 12, and the top end of the left support frame 10 is hinged with the left side of the bottom of the frame 2; the right land wheel 4 is hinged with a piston rod of the frame lifting hydraulic cylinder 3 through a right supporting beam 5, a cylinder barrel of the frame lifting hydraulic cylinder 3 is hinged on the right side of the bottom of the frame 2, one end of the right supporting beam 5 is also hinged with a right supporting frame 8, and the top end of the right supporting frame 8 is hinged on the right side of the bottom of the frame 2;
the vehicle frame 2 is provided with a vehicle frame inclination angle sensor 1, a vehicle body balance controller 7, a touch screen 6 and an electrohydraulic valve group 9, and the electrohydraulic valve group 9, the vehicle frame inclination angle sensor 1 and the touch screen 6 are respectively connected with the vehicle body balance controller 7;
the electro-hydraulic valve group 9 comprises 1 bidirectional proportional electromagnetic valve 901 and 2 electro-hydraulic switch valves 902, wherein the bidirectional proportional electromagnetic valve 901 and the electro-hydraulic switch valves 902 are connected on the hydraulic oil path of the frame lifting hydraulic cylinder 3, and the bidirectional proportional electromagnetic valve 901 and the electro-hydraulic switch valves 902 are controlled by the connection of the vehicle body balance controller 7.
The rear end of the right side supporting beam 5 is provided with a land wheel shaft head, and is connected with a right side land wheel 4 through the land wheel shaft head; the front end of the right support beam 5 is connected with the right support frame 8 through a round tube.
The rear end of the left supporting beam 12 is provided with a land wheel shaft head, the land wheel shaft head is fixedly connected with the left land wheel 11, the front end and the rear end of the left supporting beam 12 are respectively hinged with two left supporting frames 10, and the upper ends of the two left supporting frames 10 are respectively hinged with the front end and the rear end of the bottom of the potato combine harvester frame 2; the left side support rail 12 and the right side support rail 5 are in a symmetrical relationship when the frame is in a horizontal position.
The right side supporting beam 5 is a cuboid, the rear end is connected with the right side land wheel 4 and is hinged with the frame lifting hydraulic cylinder 3, the front end is hinged with the bottom end of the right side supporting frame 8, the lengths of the right side supporting beam 5 and the left side supporting beam 12 are 1190mm, the widths are 120mm, and the heights are 200mm.
The cylinder barrel of the frame lifting hydraulic cylinder 3 is connected with the bottom of the frame 2 through an upper pin shaft, and the end head of a piston rod is connected with the rear end of the right side supporting beam 5 through a lower pin shaft.
The vehicle frame inclination angle sensor 1 selects an LCA310T single-axis voltage output type inclination angle sensor, and the angle range is +/-30 degrees. The frame inclination sensor 1 is arranged on the upper surface of the frame 2 and is positioned right above the frame lifting hydraulic cylinder 3. After the frame inclination angle information is obtained, the expansion and contraction amount of the frame lifting hydraulic cylinder 3 can be adjusted more accurately, and the adjustment accuracy is ensured.
As shown in fig. 5 and 6, the body balance controller 7 includes a power module 100, a proportional conversion module 200, a level conversion module 400, a control algorithm module 300, and an electrohydraulic valve group control module 500; the proportion conversion module 200 is connected with the vehicle frame inclination sensor 1 and sends the collected vehicle frame inclination information to the control algorithm module 300; the level conversion module 400 is respectively connected with the control algorithm module 300 and the electrohydraulic valve group control module 500, and converts control signals output by the control algorithm module 300 into control signals required by the electrohydraulic valve group control module 500; the electrohydraulic valve group control module 500 is connected with the electrohydraulic valve group 9; the power module 100 is used for providing power supply voltage required by each module.
The circuit connection of the self-regulating balancing system is shown in fig. 6. The electrohydraulic valve group control module 500 comprises an active crystal oscillator 501, a frequency divider 502 and a power driving module 503, and is connected with 1 bidirectional proportional electromagnetic valve 901, 2 electrohydraulic switch valves 902, a frame inclination sensor 1, a touch screen 6 and a vehicle body balance controller 7.
Example 2:
as shown in fig. 6, the working method of the potato combine harvester according to the embodiment 1 specifically comprises the following working procedures:
in the operation process of the potato combine harvester, when a frame tilts due to the rugged road surface, the frame tilt angle information acquired by the frame tilt angle sensor 1 is transmitted to the proportional conversion module 200, the proportional conversion module 200 is used for acquiring the frame tilt information and transmitting the frame tilt information to the control algorithm module 300, and the control algorithm module 300 calculates the expansion and contraction amount of the frame lifting hydraulic cylinder 3 to be regulated according to the frame tilt angle information; the control algorithm module 300 transmits the instruction to the power driving module 503 through the level conversion module 400, and the power driving module 503 controls the 1 bidirectional proportional electromagnetic valve 901 and the 2 electrohydraulic switch valves 902, so as to finally adjust the expansion and contraction amount of the frame lifting hydraulic cylinder 3, and enable the frame to keep a relative horizontal posture.
Claims (5)
1. A potato combine harvester is characterized by comprising a frame, a left land wheel and a right land wheel;
the left ground wheel is hinged with the bottom end of a left support frame through a left support beam, and the top end of the left support frame is hinged with the left side of the bottom of the frame; the right land wheel is hinged with a piston rod of a frame lifting hydraulic cylinder through a right supporting beam, a cylinder barrel of the frame lifting hydraulic cylinder is hinged on the right side of the bottom of the frame, one end of the right supporting beam is also hinged with a right supporting frame, and the top end of the right supporting frame is hinged on the right side of the bottom of the frame; the right side supporting beam is a cuboid, the rear end of the right side supporting beam is connected with the right side ground wheel and is hinged with the lifting hydraulic cylinder of the frame, and the front end of the right side supporting beam is hinged with the bottom end of the right side supporting frame;
the vehicle frame is provided with a vehicle frame inclination angle sensor, a vehicle body balance controller, a touch screen and an electrohydraulic valve bank, wherein the electrohydraulic valve bank, the vehicle frame inclination angle sensor and the touch screen are respectively connected with the vehicle body balance controller; the frame inclination sensor is arranged on the upper surface of the frame and is positioned right above the frame lifting hydraulic cylinder; the cylinder barrel of the frame lifting hydraulic cylinder is connected with the bottom of the frame through an upper pin shaft, and the end head of the piston rod is connected with the rear end of the right side supporting beam through a lower pin shaft;
the vehicle body balance controller comprises a power supply module, a proportion conversion module, a level conversion module, a control algorithm module and an electrohydraulic valve group control module; the proportional conversion module is connected with the frame inclination sensor and sends the acquired frame inclination information to the control algorithm module; the level conversion module is respectively connected with the control algorithm module and the electrohydraulic valve group control module, and converts a control signal output by the control algorithm module into a control signal required by the electrohydraulic valve group control module; the electrohydraulic valve group control module is connected with the electrohydraulic valve group; the power supply module is used for providing power supply voltage required by each module;
the electrohydraulic valve group comprises 1 bidirectional proportional electromagnetic valve and 2 electrohydraulic switch valves, the bidirectional proportional electromagnetic valve and the electrohydraulic switch valves are arranged on the hydraulic oil path of the lifting hydraulic cylinder of the frame, and the bidirectional proportional electromagnetic valve and the electrohydraulic switch valves are controlled by the connection of the vehicle body balance controller;
in the operation process of the potato combine harvester, when a frame tilts due to a rugged road surface, the frame tilt angle information acquired by the frame tilt angle sensor is transmitted to the proportional conversion module, the proportional conversion module is used for acquiring the frame tilt angle information and transmitting the frame tilt angle information to the control algorithm module, and the control algorithm module calculates the expansion and contraction amount of the lifting hydraulic cylinder of the frame to be regulated according to the frame tilt angle information; the control algorithm module transmits the instruction to the power driving module through the level conversion module, and the power driving module controls the 1 two-way proportional electromagnetic valve and the 2 electrohydraulic switching valves, so that the expansion and contraction amount of the lifting hydraulic cylinder of the frame is finally adjusted, and the frame is kept in a relatively horizontal posture.
2. The potato combine as claimed in claim 1, wherein the rear end of the right side supporting beam is provided with a ground wheel axle head, and is connected with the right side ground wheel through the ground wheel axle head; the front end of the right side supporting beam is connected with the right side supporting frame through a round tube.
3. The potato combine as claimed in claim 1, wherein the front and rear ends of the left support cross member are hinged to the front and rear ends of the frame bottom through left support frames, respectively.
4. Potato combine as claimed in claim 1, characterized in that the left and right support beams have a length 1190mm, a width 120mm and a height 200mm.
5. Potato combine as claimed in claim 1, characterized in that the frame inclination sensor is an LCA310T single axis voltage output inclination sensor with an angle in the range of ±30°.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911413146.8A CN110972672B (en) | 2019-12-31 | 2019-12-31 | Potato combine harvester with self-adjusting balance system and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911413146.8A CN110972672B (en) | 2019-12-31 | 2019-12-31 | Potato combine harvester with self-adjusting balance system and application thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN110972672A CN110972672A (en) | 2020-04-10 |
| CN110972672B true CN110972672B (en) | 2024-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911413146.8A Active CN110972672B (en) | 2019-12-31 | 2019-12-31 | Potato combine harvester with self-adjusting balance system and application thereof |
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| Country | Link |
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| CN (1) | CN110972672B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112810729B (en) * | 2021-02-09 | 2022-10-14 | 益阳富佳科技有限公司 | Self-adjusting device for body posture of crawler tractor |
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| JPH03117424A (en) * | 1989-09-29 | 1991-05-20 | Iseki & Co Ltd | Vehicle-height controlling apparatus of combine and the like |
| JPH04306181A (en) * | 1991-04-03 | 1992-10-28 | Takaoka Electric Mfg Co Ltd | Moving truck for rough terrain |
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| Publication number | Publication date |
|---|---|
| CN110972672A (en) | 2020-04-10 |
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