CN214451315U - Variable ground clearance chassis of high ground clearance corn combine harvester - Google Patents
Variable ground clearance chassis of high ground clearance corn combine harvester Download PDFInfo
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- CN214451315U CN214451315U CN202023312218.0U CN202023312218U CN214451315U CN 214451315 U CN214451315 U CN 214451315U CN 202023312218 U CN202023312218 U CN 202023312218U CN 214451315 U CN214451315 U CN 214451315U
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- Prior art keywords
- supporting arm
- chassis
- longitudinal
- ground clearance
- combine harvester
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Abstract
The utility model provides a highland crack maize combine's variable ground clearance chassis, including distributing two longerons of chassis both sides, the lower extreme of preceding supporting arm and back supporting arm is articulated with the mount pad on the wheel, the upper end of preceding supporting arm and back supporting arm is articulated with two vertical sliders in the longeron respectively, be provided with the longitudinal screw and the vertical slider of bispin direction in two longerons and constitute the screw-nut structure, longitudinal screw rotates with the bearing frame constitution of fixing on the longeron and is connected, the screw thread of two vertical sliders on preceding supporting arm and the back supporting arm is reverse, preceding supporting arm arranges with the back supporting arm is whole to become the V-arrangement, longitudinal screw links to each other with hydraulic motor, above-mentioned articulated shaft core all is located car width direction.
Description
Technical Field
The utility model relates to an agricultural machine results technical field particularly, relates to corn combine's chassis.
Background
Taking corn-soybean strip relay intercropping planting as an example, in the current domestic corn-soybean intercropping mode, the field configuration of corn and soybean usually adopts two lines of corn +2～And 4 rows of soybean planting modes. The corn harvesting usually adopts two lines of narrow corn harvesters to harvest, the corn harvesting efficiency is low, and the machine harvesting automation degree is not high. Because the height difference between soybean plants and corn plants is large, the requirements for mature harvest of crops are different, and it is difficult to harvest two crops simultaneously by adopting one harvester.
Wherein, the soybeans do not enter the mature period during the harvesting of the corns, so the soybeans need to be harvested across the soybean rows, and certain ground clearance requirements are put forward to the harvester. Most of the corn harvesters are of a low-ground-clearance structure, damage and injury to soybean crops can occur when the harvester is used for working, and soybean varieties, climatic conditions and the like are different in different regions, so that soybean plants are different in height. And the row spacing is not fixed according to different planting modes. In order to solve the problems, a variable-wheel-track lifting chassis needs to be developed to realize the development of the relay intercropping planting mode technology.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a ground clearance changing chassis of high ground clearance corn combine.
In order to achieve the above purpose, the technical scheme of the utility model is that: the variable ground clearance chassis of the high ground clearance corn combine harvester comprises two longitudinal beams which are distributed on two sides of the chassis, the lower ends of a front supporting arm and a rear supporting arm are hinged with a mounting seat on a wheel, the upper ends of the front supporting arm and the rear supporting arm are respectively hinged with two longitudinal sliding blocks in the longitudinal beams, longitudinal screws and longitudinal sliding blocks which are arranged in two rotational directions in the two longitudinal beams form a screw-nut structure, the longitudinal screws and a first bearing seat fixed on the longitudinal beams form a rotating connection, the threads of the two longitudinal sliding blocks on the front supporting arm and the rear supporting arm are opposite, the front supporting arm and the rear supporting arm are integrally arranged in a V shape, and the longitudinal screws are connected with a hydraulic motor. When the vehicle starts, power is transmitted through the gearbox by the engine to drive the one-way constant delivery pump to operate. When the front wheel chassis needs to be adjusted to be lowered, the YA1 and the YA5 are controlled by the control system to be electrified, the two-position two-way electromagnetic valve works at the left position and the first three-position four-way electromagnetic valve works at the right position, hydraulic oil passes through the one-way constant delivery pump, the two-position two-way electromagnetic valve, the flow dividing and collecting valve, the second three-position four-way electromagnetic valve and the fifth flow dividing and collecting valve, the third two-way hydraulic motor and the fourth two-way hydraulic motor are driven to rotate forwards simultaneously, and finally the hydraulic oil flows back to the oil tank through the second three-position four-way electromagnetic valve and the flow dividing and collecting valve. At the moment, the third bidirectional hydraulic motor and the fourth bidirectional hydraulic motor reversely rotate to drive the lead screw to rotate, the two sliding blocks move away from each other to drive the front supporting arm to rotate anticlockwise, the rear supporting arm rotates clockwise, the chassis is lowered at the moment, and the ground clearance is lowered.
When the front wheel chassis needs to be adjusted to lift, the YA1 and the YA4 are controlled to be electrified through the control system, the two-position two-way electromagnetic valve works at the left position, the two-position three-position four-way electromagnetic valve works at the left position, the three-position two-way hydraulic motor and the four-position two-way hydraulic motor are driven to rotate reversely, the screw rod sliding blocks are driven to move oppositely, the chassis is lifted, and the ground clearance of the chassis is improved.
Similarly, the rear wheel also drives the first bidirectional hydraulic motor 34 and the second bidirectional hydraulic motor to rotate forwards by controlling YA1 and YA2 to be electrified, the two lead screw sliders move away from each other at the moment, and the chassis is lowered at the moment.
Through control YA1, YA3 gets electricity, drives a two-way hydraulic motor and two-way hydraulic motor reversal, and two lead screw sliders move in opposite directions this moment, and the chassis promotes this moment.
When the ground clearance of the chassis needs to be increased simultaneously, YA1, YA3 and YA5 are electrified to drive the first bidirectional hydraulic motor, the second bidirectional hydraulic motor, the third bidirectional hydraulic motor and the fourth bidirectional hydraulic motor to rotate forwards, so that the ground clearance is increased.
When the ground clearance of the chassis needs to be reduced simultaneously, YA1, YA2 and YA4 are electrified to drive the first bidirectional hydraulic motor, the second bidirectional hydraulic motor, the third bidirectional hydraulic motor and the fourth bidirectional hydraulic motor to rotate reversely, so that the ground clearance of the chassis is reduced.
Further, the lead angle of the longitudinal screw is less than the equivalent friction angle. So as to have self-locking function.
Further characterized in that the angle between the front and rear support arms is between 0 and 120.
Further, the mounting seat is arranged on a drive axle at the inner side of the wheel, and the width of the chassis is smaller than the distance between the left wheel and the right wheel. Thus, the wheels do not interfere with the lifting of the chassis.
And further, the two longitudinal beams are respectively provided with a transverse sliding block with opposite screwing directions of threaded holes, and the transverse sliding block and a transverse screw rod with double screwing directions in the vehicle width direction form a screw rod nut structure.
And further, the two longitudinal beams are respectively provided with a transverse sliding block, one transverse sliding block and a transverse screw rod positioned in the vehicle width direction form a screw rod nut structure, and the other transverse sliding block and the transverse screw rod form a rotary connection. When the wheel track needs to be reduced, the chain drives the chain wheel to drive, the chain wheel drives the left and right screw thread screw shafts to rotate, and the screw thread sliding blocks are pushed to move oppositely.
Further, when the wheel track needs to be enlarged, the chain drives the chain wheel to transmit, and the chain wheel drives the left and right thread screw rod shafts to rotate so as to push the screw rod sliding blocks to move oppositely. Wherein the screw rod sliding block and the lower frame are welded into a whole and move transversely along the bottom plate of the harvester together with the screw rod sliding block.
The transverse screw rods are arranged in the length direction of the vehicle and are in rotating connection with the frame bearing seats of the upper frame, and the upper frame is fixedly connected with the vehicle body. This embodiment can also be referred to above as the motion step of the embodiment.
And further, the single longitudinal beam is formed by oppositely welding the notches of two channel steels, and the longitudinal sliding block and the longitudinal lead screw are positioned in the notches. This facilitates protection of the feed screw nut structure.
Above-mentioned scheme simple structure can realize the lift and the wheel tread of chassis and adjust.
Drawings
The present invention will be further described with reference to the accompanying drawings.
FIG. 1 is an isometric view of the lifting chassis of the present invention
FIG. 2 is a front view of the lifting chassis of the present invention
FIG. 3 is a side view of the lifting chassis of the present invention
FIG. 4 is a partial cross-sectional view of an elevating suspension
FIG. 5 is a view showing the structure of a sliding lead screw
FIG. 6 is a structural view of a variable track mechanism
FIG. 7 is a hydraulic system diagram
1. A wheel; 2. a drive axle; 3. a mounting seat; 4. a front support arm; 5. a rear support arm; 6. a longitudinal lead screw; 7. a synchronous belt; 9. a stringer; 10. a first bearing housing; 12. a hydraulic motor; 13. a coupling; 14. A sprocket; 15. a transverse screw; 16. a transverse slide block; 17. an upper frame; 18. a bolt; 19. a longitudinal slide block; 20. a frame bearing seat; 21. an oil tank; 22. a hydraulic pump; 23. a one-way valve; 24. an overflow valve; 25. a two-position two-way solenoid valve; 26. a first flow splitting and collecting valve; 27. a second flow dividing and collecting valve; 30. a third split flow collection valve; 31. a fourth split flow collection valve; 32. a fifth split flow collection valve; 33. a fifth split flow collection valve; 28. A first three-position four-way electromagnetic valve; 29. a second three-position four-way solenoid valve; 34. a first bidirectional hydraulic motor; 35. A second bidirectional hydraulic motor; 36. a third bidirectional hydraulic motor; 37. and a fourth bidirectional hydraulic motor.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to the schematic illustrations of figures 1-7,
a variable ground clearance chassis of a high ground clearance corn combine harvester comprises two longitudinal beams 9 distributed on two sides of the chassis, the lower ends of a front supporting arm 4 and a rear supporting arm 5 are hinged with a mounting seat 3 on a wheel 1, the upper ends of the front supporting arm 4 and the rear supporting arm 5 are respectively hinged with two longitudinal sliding blocks 19 in the longitudinal beams 9, a longitudinal screw 6 and the longitudinal sliding blocks 19 in double rotation directions are arranged in the two longitudinal beams 9 to form a screw nut structure, the longitudinal screw 6 is rotatably connected with a first bearing seat 10 fixed on the longitudinal beams 9, the threads of the two longitudinal sliding blocks 19 on the front supporting arm 4 and the rear supporting arm 5 are opposite, the front supporting arm 4 and the rear supporting arm 5 are integrally arranged in a V shape, the longitudinal screw 6 is connected with a hydraulic motor 12, and the shaft cores are all positioned in the vehicle width direction. When the vehicle is started, power is transmitted through the transmission by the engine, driving the one-way fixed displacement pump 22 to operate. When the front wheel chassis needs to be adjusted to be lowered, the YA1 and the YA5 are controlled to be electrified through the control system, the left position of the two-position two-way electromagnetic valve 25 works while the right position of the first three-position four-way electromagnetic valve 28 works, hydraulic oil passes through the one-way metering pump 22, passes through the two-position two-way electromagnetic valve 25, flows through the 27 flow dividing and collecting valve, flows through the second three-position four-way electromagnetic valve 29 and the fifth flow dividing and collecting valve 32, simultaneously drives the third two-way hydraulic motor 36 and the fourth two-way hydraulic motor 37 to rotate forwards, and finally flows back to the oil tank 21 through the second three-position four-way electromagnetic valve 29 and the flow dividing and collecting valve 26. At this time, the third bidirectional hydraulic motor 36 and the fourth bidirectional hydraulic motor 37 reversely rotate to drive the screw rod to rotate, the two sliding blocks move away from each other to drive the front supporting arm to rotate anticlockwise, the rear supporting arm rotates clockwise, the chassis is lowered at this time, and the ground clearance is lowered.
When the front wheel chassis needs to be adjusted to lift, the YA1 and the YA4 are controlled to be electrified through the control system, the two-position two-way electromagnetic valve 25 works at the left position, the two-position three-position four-way electromagnetic valve 29 works at the left position, the three-position two-way hydraulic motor 36 and the four-position two-way hydraulic motor 37 are driven to rotate reversely, the screw rod sliding blocks are driven to move oppositely, the chassis is lifted, and the ground clearance of the chassis is improved.
Similarly, the rear wheel also drives the first bidirectional hydraulic motor 34 and the second bidirectional hydraulic motor 35 to rotate forwards by controlling the YA1 and the YA2 to be electrified, the two lead screw sliders move away from each other at the moment, and the chassis is lowered at the moment.
By controlling YA1 and YA3 to be electrified, the first bidirectional hydraulic motor 34 and the second bidirectional hydraulic motor 35 are driven to rotate reversely, at the moment, the two lead screw sliders move oppositely, and at the moment, the chassis is lifted.
When the chassis ground clearance needs to be increased simultaneously, YA1, YA3 and YA5 are electrified to drive the first bidirectional hydraulic motor 34, the second bidirectional hydraulic motor 35, the third bidirectional hydraulic motor 36 and the fourth bidirectional hydraulic motor 37 to rotate forwards, so that the ground clearance is increased.
When the chassis ground clearance needs to be reduced simultaneously, YA1, YA2 and YA4 are electrified to drive the first bidirectional hydraulic motor 34, the second bidirectional hydraulic motor 35, the third bidirectional hydraulic motor 36 and the fourth bidirectional hydraulic motor 37 to rotate reversely, so that the ground clearance of the chassis is reduced.
The lead angle of the longitudinal screw 6 is smaller than the equivalent friction angle. So as to have self-locking function.
The angle between the front support arm 4 and the rear support arm 5 is 0-120.
The mounting seat 3 is arranged on a drive axle 2 at the inner side of the wheel 1, and the width of the chassis is smaller than the distance between the left wheel 1 and the right wheel 1. So that the wheels 1 do not interfere with the lifting of the chassis.
The two longitudinal beams 9 are respectively provided with a transverse sliding block 16 with threaded holes in opposite screwing directions, and the transverse sliding block 16 and a transverse screw rod 15 in a double screwing direction in the vehicle width direction form a screw rod nut structure.
The first embodiment is as follows: the two longitudinal beams 9 are respectively provided with a transverse sliding block 16, one transverse sliding block 16 and a transverse screw 15 positioned in the vehicle width direction form a screw nut structure, and the other transverse sliding block 16 and the transverse screw 15 form a rotary connection. When the wheel track needs to be reduced, the chain drives the chain wheel to drive, the chain wheel drives the left and right screw thread screw shafts to rotate, and the screw thread sliding blocks are pushed to move oppositely.
When the wheel track needs to be enlarged, the chain drives the chain wheel to transmit, and the chain wheel drives the left and right thread screw rod shafts to rotate so as to push the screw rod sliding blocks to move oppositely. Wherein the screw rod sliding block and the lower frame are welded into a whole and move transversely along the bottom plate of the harvester together with the screw rod sliding block.
Example two: at least two transverse screw rods 15 are arranged in the vehicle length direction and are in rotating connection with a frame bearing seat 20 of an upper vehicle frame 17, and the upper vehicle frame 17 is fixedly connected with a vehicle body. This embodiment can also be referred to above as the motion step of the embodiment.
The single longitudinal beam 9 is formed by oppositely welding two channel steel notches, and the longitudinal sliding block 19 and the longitudinal screw rod 6 are positioned in the notches. This facilitates protection of the feed screw nut structure.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only, and various modifications, additions and substitutions as described for the specific embodiments described herein may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the invention as defined in the claims.
Claims (8)
1. A variable ground clearance chassis of a high ground clearance corn combine harvester is characterized in that: the wheel support structure comprises two longitudinal beams (9) distributed on two sides of a chassis, the lower ends of a front supporting arm (4) and a rear supporting arm (5) are hinged to a mounting seat (3) on a wheel (1), the upper ends of the front supporting arm (4) and the rear supporting arm (5) are hinged to two longitudinal sliding blocks (19) in the longitudinal beams (9) respectively, a double-rotation longitudinal lead screw (6) and the longitudinal sliding blocks (19) are arranged in the two longitudinal beams (9) to form a lead screw nut structure, the longitudinal lead screw (6) and a first bearing seat (10) fixed on the longitudinal beams (9) are connected in a rotating mode, the threads of the two longitudinal sliding blocks (19) on the front supporting arm (4) and the rear supporting arm (5) are opposite, the front supporting arm (4) and the rear supporting arm (5) are integrally arranged in a V shape, and the longitudinal lead screw (6) is connected with a hydraulic motor (12).
2. The variable-ground-clearance chassis of the high-ground-clearance corn combine harvester of claim 1, wherein the lead angle of the longitudinal screw (6) is smaller than the equivalent friction angle.
3. The variable-ground-clearance chassis of a high-ground-clearance corn combine harvester according to claim 1, characterized in that the angle between the front support arm (4) and the rear support arm (5) is 0-120 °.
4. The variable ground clearance chassis of the high ground clearance corn combine harvester of claim 1, wherein the mounting seat (3) is arranged on the drive axle (2) at the inner side of the wheels (1), and the width of the chassis is smaller than the distance between the left wheel (1) and the right wheel (1).
5. The variable ground clearance chassis of the high ground clearance corn combine harvester according to claim 1, wherein the two longitudinal beams (9) are respectively provided with a transverse sliding block (16) with threaded holes in opposite directions, and the transverse sliding block (16) and a transverse screw rod (15) in double directions of rotation in the vehicle width direction form a screw rod nut structure.
6. The variable ground clearance chassis of the high ground clearance corn combine harvester of claim 1, characterized in that the two longitudinal beams (9) are respectively provided with a transverse sliding block (16), wherein one transverse sliding block (16) and a transverse screw rod (15) positioned in the vehicle width direction form a screw nut structure, and the other transverse sliding block (16) and the transverse screw rod (15) form a rotary connection.
7. The variable ground clearance chassis of the high ground clearance corn combine harvester of claim 5 or 6, characterized in that the transverse screw (15) is arranged at least two in the vehicle length direction and forms a rotary connection with a frame bearing seat (20) of an upper frame (17), and the upper frame (17) is fixedly connected with a vehicle body.
8. The variable ground clearance chassis of the high ground clearance corn combine harvester of claim 1, wherein the single longitudinal beam (9) is formed by oppositely welding two channel steel notches, and the longitudinal sliding block (19) and the longitudinal lead screw (6) are positioned in the notches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023312218.0U CN214451315U (en) | 2020-12-31 | 2020-12-31 | Variable ground clearance chassis of high ground clearance corn combine harvester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023312218.0U CN214451315U (en) | 2020-12-31 | 2020-12-31 | Variable ground clearance chassis of high ground clearance corn combine harvester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214451315U true CN214451315U (en) | 2021-10-22 |
Family
ID=78109485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023312218.0U Expired - Fee Related CN214451315U (en) | 2020-12-31 | 2020-12-31 | Variable ground clearance chassis of high ground clearance corn combine harvester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214451315U (en) |
-
2020
- 2020-12-31 CN CN202023312218.0U patent/CN214451315U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211022 |