CN115500105A - Chassis leveling system, chassis and agricultural machine - Google Patents
Chassis leveling system, chassis and agricultural machine Download PDFInfo
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- CN115500105A CN115500105A CN202110694117.4A CN202110694117A CN115500105A CN 115500105 A CN115500105 A CN 115500105A CN 202110694117 A CN202110694117 A CN 202110694117A CN 115500105 A CN115500105 A CN 115500105A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B51/00—Undercarriages specially adapted for mounting-on various kinds of agricultural tools or apparatus
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Abstract
The invention discloses a chassis leveling system, a chassis and agricultural machinery, wherein the chassis leveling system comprises: the first frame connecting structure is used for connecting a frame of the chassis; the connecting rod assembly comprises a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are respectively distributed on the left side and the right side of the first vehicle frame connecting structure, respective first ends of the first connecting rod and the second connecting rod are pivotally connected with the first vehicle frame connecting structure, and second ends of the first connecting rod and the second connecting rod are pivotally connected with the vehicle axle; and the first telescopic driving mechanism is used for driving the connecting rod assembly to pivot around the axle pivoting connecting end, so that the connecting rod assembly can drive the first frame connecting structure to move up and down, the height of the frame in the chassis in the vertical direction can be adjusted, the front end and the rear end of the frame in the chassis can be kept in a horizontal state even in an uneven terrain environment, and the chassis leveling system has good supporting capacity.
Description
Technical Field
The invention relates to the technical field of agricultural machinery, in particular to a chassis leveling system, a chassis and agricultural machinery.
Background
With the development of science and technology, agricultural machinery is more and more popular. On the one hand, however, the crops are various in variety, rice, wheat, corn, potatoes, cotton, apples, pears, oranges and the like are common, and the operation period is short from cultivation, planting, treatment (fertilization, irrigation and the like) in the growth period to final harvest of many crops, and all the operations need to be completed by operators in time; on the other hand, the operation environment of the agricultural machine is complex and the agricultural machine is often operated in an uneven or sloping field environment, so that the safety of operators cannot be guaranteed, and the comfort of the agricultural machine cannot meet the requirements. Therefore, the safety and the comfort of the agricultural machinery working platform are important tasks. In order to ensure the safety and comfort of operators and achieve relatively ideal operation effect during operation, the horizontal state of the operation platform needs to be ensured even if the operators operate in environments such as sloping fields, and in order to meet the requirements, a chassis leveling system, a chassis and an agricultural machine need to be designed, and the inclination angle of the chassis can be adjusted according to terrain changes.
Disclosure of Invention
The invention aims to provide a chassis leveling system, a chassis and an agricultural machine, which have the advantages of simple structure and capability of adjusting a vehicle frame to keep a horizontal state in a complex terrain environment.
In order to achieve the above object, an aspect of the present invention provides a chassis leveling system, including:
the first frame connecting structure is used for connecting a frame of the chassis;
the connecting rod assembly comprises a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are respectively distributed on the left side and the right side of the first vehicle frame connecting structure, respective first ends of the first connecting rod and the second connecting rod are pivotally connected with the first vehicle frame connecting structure, and second ends of the first connecting rod and the second connecting rod are pivotally connected with the vehicle axle; and
the first telescopic driving mechanism is used for driving the connecting rod assembly to pivot around the axle pivot connecting end, so that the connecting rod assembly can drive the first frame connecting structure to move up and down.
In an embodiment of the invention, the frame has a pivot centre, and the chassis leveling system further comprises a second telescopic drive mechanism arranged to the left and/or right side of the first frame attachment structure for driving the frame to pivot about the pivot centre.
In an embodiment of the invention, the chassis leveling system further comprises a second frame attachment structure fixedly connected to the frame and an intermediate connection shaft passing through and pivotally connecting the second frame attachment structure to the first frame attachment structure.
In the embodiment of the invention, a first pivot shaft is arranged on the first vehicle frame connecting structure, a second pivot shaft is arranged at the bottom of the vehicle frame, the lower end of the second telescopic driving mechanism is pivotally connected with the first pivot shaft, and the upper end of the second telescopic driving mechanism is pivotally connected with the second pivot shaft.
In an embodiment of the present invention, the chassis leveling system further includes a first hinge seat and a second hinge seat both disposed on the axle and pivotally connected to one end of the first link rod and one end of the second link rod, respectively.
In an embodiment of the present invention, the link assembly further includes a third side link and a fourth side link connected between the first frame connecting structure and the axle and respectively consistent with the movement states of the first side link and the second side link.
The second invention provides a chassis which comprises a frame and an axle, wherein the chassis leveling system is arranged between the frame and the axle.
In an embodiment of the invention, the first telescopic driving mechanism and the second telescopic driving mechanism are both hydraulic cylinders, and the chassis further comprises a hydraulic station for driving the first telescopic driving mechanism and the second telescopic driving mechanism to extend and retract.
In an embodiment of the invention, the hydraulic station comprises a one-way balancing valve and a two-way balancing valve for adjusting the load balance of the first telescopic driving mechanism and the second telescopic driving mechanism respectively.
The third invention provides an agricultural machine, which comprises the chassis.
According to the technical scheme, the first frame connecting structure connected with the frame is arranged, the connecting rod assembly with two ends respectively connected with the frame and the axle in a pivoting manner is arranged, the first telescopic driving mechanism is further arranged to drive the connecting rod assembly to pivot around the axle pivoting connection end, so that the connecting rod assembly can drive the first frame connecting structure to move up and down, the height of the frame in the chassis in the vertical direction can be adjusted, and the front end and the rear end of the frame in the chassis can be kept in a horizontal state even in an uneven terrain environment; in addition, the chassis leveling system can bear the load of the frame and the parts above the frame in the working process, and has good supporting capacity.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention and not to limit the embodiments of the invention. In the drawings:
FIG. 1 is a first perspective structural view of a chassis according to an embodiment of the present invention;
FIG. 2 is a second perspective view of the chassis according to an embodiment of the present invention;
FIG. 3 is a third perspective structural view of the chassis according to an embodiment of the present invention;
FIG. 4 is a fourth perspective structural view of the chassis according to an embodiment of the present invention;
FIG. 5 is a schematic view of a first frame connecting structure according to an embodiment of the present invention;
FIG. 6 is a schematic view of a second frame attachment configuration in accordance with an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a rear leveling system in an embodiment of the present invention;
FIG. 8 is a schematic diagram of the hydraulic station assembly in an embodiment of the present invention;
FIG. 9 is a schematic view of a lateral leveling condition of the vehicle frame in an embodiment of the present invention;
FIG. 10 is a schematic view of a longitudinal leveling condition of the frame in an embodiment of the present invention;
description of the reference numerals
1. First frame connection structure 101 corner ear plate
102. Base plate 103 reinforcing sleeve
104. Ear plate 105 rib plate
106. Reinforced cylinder 2 vehicle frame
3. Connecting rod assembly 301 first connecting rod
302. Second side link 303 and third side link
304. The fourth side link 4 is a first telescopic driving mechanism
5. Second frame connecting structure of second telescopic driving mechanism 6
601. First side plate 602 second side plate
603. Center pivot cylinder of intermediate reinforced cylinder 604
605. Connecting plate 7 intermediate connecting shaft
8. First pivot 9 second pivot
10. Axle 11 first hinge seat
12. Second hinged seat 13 and third frame connecting structure
14. Hydraulic station 1401 one-way balance valve
1402. Bidirectional balance valve 1403 oil tank
1404. Oil return line of oil outlet line 1405
1406. Connecting line 1407 first drive connecting line
1408. Second drive connecting line 1409 gear pump
1410. Speed regulating valve 1411 three-position four-way solenoid valve
1412. Check valve 1413 radiator
1414. Oil return filter
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In an embodiment of the present invention, a novel chassis leveling system is provided, and in the embodiment, the chassis leveling system is applied to a chassis of an agricultural machine (such as a harvester), as shown in fig. 1 to 7, when the chassis leveling system is applied to the chassis, chassis leveling systems, namely a front leveling system and a rear leveling system, need to be arranged at both front and rear ends of a frame 2 in the chassis. Specifically, the chassis leveling system comprises a first frame connecting structure 1, a connecting rod assembly 3 and a first telescopic driving mechanism 4, wherein the first frame connecting structure 1 is used for connecting a frame 2 of a chassis; the connecting rod assembly 3 comprises a first connecting rod 301 and a second connecting rod 302, the first connecting rod 301 and the second connecting rod 302 are respectively distributed on the left side and the right side of the first vehicle frame connecting structure 1, the respective first ends of the first connecting rod 301 and the second connecting rod 302 are in pivot connection with the first vehicle frame connecting structure 1, and pin shafts are arranged at the connecting positions of the first ends of the first connecting rod 301 and the second connecting rod 302 and the first vehicle frame connecting structure 1, so that the rotation among the first connecting rod 301, the second connecting rod 302 and the first vehicle frame connecting structure 1 is realized; the second ends of the first and second side links 301 and 302 are pivotally connected to the axle (i.e. the second ends of the first and second side links 301 and 302 are both axle pivot connection ends), and similarly, the connection positions of the second ends of the first and second side links 301 and 302 and the axle are also provided with pin shafts, so as to realize the rotation between the first and second side links 301 and 302 and the axle, so that the first and second side links 301 and 302 can play a role in transferring force between the frame 2 and the axle 10, and can also pivot relative to the frame 2 and the axle 10, thereby enhancing the flexibility of the chassis leveling system; the first telescopic driving mechanisms 4 are used for driving the connecting rod assembly 3 to pivot around the axle pivot connection end, so that the connecting rod assembly 3 can drive the first frame connecting structure 1 to move up and down, in the embodiment, the number of the first telescopic driving mechanisms 4 in the front leveling system and the rear leveling system is two, the two first telescopic driving mechanisms 4 are respectively arranged between the first frame connecting structure 1 and the axle 10 and distributed on the left side and the right side of the first frame connecting structure 1, one end of each first telescopic driving mechanism 4 is in pivot connection with the axle 10, and the other end of each first telescopic driving mechanism 4 is in pivot connection with the first frame connecting structure 1. When the first telescopic driving mechanism 4 extends, one end of the first telescopic driving mechanism 4, which extends, drives the connecting rod assembly 3 to pivot upwards around the axle pivot connecting end, so as to drive the first frame connecting structure 1 to move upwards, and then the first frame connecting structure 1 drives the frame 2 connected with the first frame connecting structure to move upwards; when the first telescopic driving mechanism 4 retracts, the retracted end of the first telescopic driving mechanism 4 drives the connecting rod assembly 3 to pivot downwards around the axle pivot connecting end, so as to drive the first frame connecting structure 1 to move downwards, and then the first frame connecting structure 1 drives the frame 2 connected with the first frame connecting structure to move downwards.
Therefore, the chassis leveling system provided in the present embodiment can adjust the height of the frame 2 in the chassis in the vertical direction, so that the front and rear ends of the frame 2 in the chassis can be kept in a horizontal state even in an uneven terrain environment; in addition, the chassis leveling system can bear the load of the frame 2 and the parts above the frame in the working process, and has a supporting effect on the body of the agricultural machine.
In one embodiment of the invention, the frame 2 has a pivot centre, and the chassis leveling system further comprises a second telescopic drive mechanism 5 arranged at the left and/or right side of the first frame connecting structure 1 for driving the frame 2 to pivot about the pivot centre in order to adjust the chassis in which the frame 2 is kept horizontal in the left-right direction.
In one embodiment of the present invention, as shown in fig. 5, the first frame connecting structure 1 comprises a corner ear plate 101, a base plate 102, a first reinforcing cylinder 103, an ear plate 104, a rib plate 105 and a second reinforcing cylinder 106, wherein the rib plate 105 is in the shape of a groove, the groove has a first opening end with an opening direction facing the base plate 102, the first opening end is fixedly connected with the base plate 102, and one or more second reinforcing cylinders 106 are arranged between the base plate 102 and the rib plate 105 to reinforce the structural strength of the first frame connecting structure 1; the corner ear plates 101 are L-shaped and distributed on the left side and the right side of the rib plate 105, and the corner ear plates 101 are fixedly connected with the rib plate 105 and the base plate 102 at the same time; the ear plate 104 is in a groove shape and is disposed at the lower left corner or the lower right corner of the base plate 102, the groove has a second opening end facing the base plate 102, the second opening end is fixedly connected with the base plate 102, and one or more first reinforcing cylinders 103 are disposed between the base plate 102 and the ear plate 104 to further reinforce the structural strength of the first frame connecting structure 1.
In one embodiment of the invention, the chassis leveling system further comprises a second frame connecting structure 6 fixedly connected to the frame 2 and an intermediate connection shaft 7, the intermediate connection shaft 7 passing through the second frame connecting structure 6 and the first frame connecting structure 1 and pivotally connecting the second frame connecting structure 6 and the first frame connecting structure 1. Specifically, the chassis leveling system further comprises a third frame connecting structure 13 connected with the left side and the right side of the first frame connecting structure 1, and an accommodating space is formed between the first frame connecting structure 1 and the third frame connecting structure 13; the chassis further comprises an intermediate connection shaft 7 and a second frame connection 6 arranged at the bottom of the frame 2 and extending into the receiving space. As shown in fig. 6, the second frame connecting structure 6 includes a first side plate 601, a second side plate 602, an intermediate reinforcing cylinder 603, a central pivot cylinder 604 and a connecting plate 605, wherein the first side plate 601 and the second side plate 602 are arranged at intervals, the connecting plate 605 is arranged between the side edges of the first side plate 601 and the second side plate 602 to fixedly connect the two, and the cross beam of the frame 2 is clamped between the first side plate 601 and the second side plate 602 and fixedly connected with the first side plate 601 and the second side plate 602; one or more intermediate reinforcing cylinders 603 are provided between the first side plate 601, the second side plate 602 to reinforce the structural strength of the second frame connecting structure 6; a center pivot cylinder 604 is also provided between the first side plate 601 and the second side plate 602, and an intermediate connecting shaft 7 is inserted into the center pivot cylinder 604.
The third frame connecting structure 13 is a metal plate provided with a pin shaft hole, and similarly, the first frame connecting structure 1 and the second frame connecting structure 6 are also provided with the pin shaft hole, the middle connecting shaft 7 sequentially passes through the first frame connecting structure 1, the second frame connecting structure 6 and the third frame connecting structure 13 to connect the three components, so that the frame 2 can pivot around the middle connecting shaft 7 (namely the middle connecting shaft 7 is the pivot center of the frame 2), and further the frame can perform deflection adjustment in the left and right directions relative to the middle connecting shaft 7, and the motion flexibility of the chassis leveling system is further increased; a plurality of bolt holes are further formed in the third frame connecting structure 13, and the bolt holes are used for enabling the first frame connecting structure 1 and the third frame connecting structure 13 to be connected in a reinforcing mode through bolts.
The second telescopic driving mechanism 5 is arranged on the left side and/or the right side of the first frame connecting structure 1, one end of the second telescopic driving mechanism 5 is connected with the first frame connecting structure 1, and the other end of the second telescopic driving mechanism 5 is connected with the frame 2. When the second telescopic driving mechanism 5 extends or retracts, the second telescopic driving mechanism 5 drives the frame 2 to pivot towards the left side or the right side around the middle connecting shaft 7, and the chassis leveling system can adjust the deflection angle of the frame 2 in the chassis in the horizontal direction, so that the left side and the right side of the frame 2 in the chassis can be kept in the horizontal state even in an uneven terrain environment. In this embodiment, it is further preferable that the second telescopic driving mechanism 5 is disposed on one side (i.e., left side or right side) of the first frame connecting structure 1, so that the chassis leveling system can achieve a leveling function of the chassis frame 2 in the left-right direction, and can reduce the number of the second telescopic driving mechanisms 5 and reduce the cost.
In one embodiment of the present invention, the first frame connecting structure 1 is provided with a first pivot shaft 8, i.e. the first pivot shaft 8 is inserted into the first reinforcing cylinder 103, the bottom of the frame 2 is provided with a second pivot shaft 9, the lower end of the second telescopic driving mechanism 5 is pivotally connected with the first pivot shaft 8, and the upper end of the second telescopic driving mechanism 5 is pivotally connected with the second pivot shaft 9. Specifically, a first pivot hole is formed in the bottom of the second telescopic driving mechanism 5, a second pivot hole is formed in the top of the second telescopic driving mechanism 5, the second telescopic driving mechanism 5 is pivotally connected with the first pivot shaft 8 through the first pivot hole and is pivotally connected with the second pivot shaft 9 through the second pivot hole, the movement flexibility of the second telescopic driving mechanism 5 is further enhanced, the second telescopic driving mechanism 5 can apply driving force to the frame 2 and can also deflect adaptively along with the deflection of the frame 2, and the movement coordination between the chassis leveling system and the frame 2 is improved.
In one embodiment of the present invention, the chassis leveling system further comprises a first articulation seat 11 and a second articulation seat 12 both disposed on the axle 10 and connected to the axle pivot connection ends of the first and second link levers 301, 302, respectively. Specifically, the first hinge seat 11 and the second hinge seat 12 are respectively arranged at the left side and the right side of the axle 10, wherein the first hinge seat 11 is triangular, the rear end of the first hinge seat 11 is fixedly connected with the axle 10, and the upper end of the first hinge seat 11 is pivotally connected with the axle pivotal connection end of the first connection rod 301; the second articulated seat 12 is triangular, the rear end of the second articulated seat 12 is fixedly connected with the axle 10, and the upper end of the second articulated seat 12 is pivotally connected with the axle pivotal connection end of the second side link 302; one end of each of the two first telescopic driving mechanisms 4 is respectively pivotally connected with the lower end of each of the first hinged seat 11 and the second hinged seat 12, the other end of each of the two first telescopic driving mechanisms 4 is respectively pivotally connected with one end of each of the first link rod 301 and the second link rod 302, which is far away from the axle pivotal connection end, so that a triangular structure is formed between each of the first hinged seat 11 and the first telescopic driving mechanism 4, and a triangular structure is also formed between each of the second hinged seat 12 and the second link rod 302 and one of the first telescopic driving mechanisms 4, thereby improving the structural stability between the first frame connecting structure 1 and the axle 10 and enhancing the supporting capability of the chassis leveling system on the frame 2 and above parts.
In one embodiment of the present invention, the link assembly 3 further includes a third side link 303 and a fourth side link 304 connected between the first frame connecting structure 1 and the axle 10 and respectively corresponding to the movement states of the first side link 301 and the second side link 302. Specifically, the third side link 303 is located below the first telescopic driving mechanism 4 and is arranged in parallel with the first side link 301, one end of the third side link 303 is pivotally connected with the first frame connecting structure 1, and the other end is pivotally connected with the lower end of the first telescopic driving mechanism 4 and the lower end of the first hinge seat 11; the fourth side link 304 is located below the first telescopic driving mechanism 4 and arranged in parallel with the second side link 302, one end of the fourth side link 304 is pivotally connected with the first frame connecting structure 1, and the other end of the fourth side link 304 is pivotally connected with the lower end of the first telescopic driving mechanism 4 and the lower end of the second hinged seat 12, so that the first hinged seat 11, the first side link 301, the first frame connecting structure 1 and the third side link 303 form a parallelogram structure, the second hinged seat 12, the second side link 302, the first frame connecting structure 1 and the fourth side link 304 also form a parallelogram structure, and when the first telescopic driving mechanism 4 is extended, the third side link 303 and the fourth side link 304 pivot upwards around the respective ends connected with the hinged seats; when the first telescopic driving mechanism 4 is retracted, the third side link 303 and the fourth side link 304 will pivot downwards around the respective ends connected to the hinge seats, so that the chassis leveling system in this embodiment further enhances the supporting capability while ensuring the mobility and coordination. In addition, the four corners of the two parallelogram structures are pivotally connected through pin shafts.
The invention provides a novel chassis which is applied to agricultural machinery, the chassis comprises a frame 2 and an axle 10, a chassis leveling system provided by the embodiment is arranged between the frame 2 and the axle 10, wherein the axle 10 comprises a front axle and a rear axle which are respectively arranged at the front end and the rear end below the frame 2, and the front axle and the rear axle are respectively connected with the front end and the rear end of the frame 2 through the chassis leveling system, so that the chassis has leveling functions in the vertical direction and the horizontal direction at the same time, the chassis can be ensured to adjust the front-back and/or left-right inclination angle of the frame 2 according to terrain change, and the frame 2 is always in a horizontal state; in addition, the chassis has sufficient bearing capacity and plays a role in supporting the body of the agricultural machine.
In one embodiment of the present invention, the first telescopic driving mechanism 4 and the second telescopic driving mechanism 5 are both hydraulic cylinders, and the chassis further comprises a hydraulic station 14 for driving the first telescopic driving mechanism 4 and the second telescopic driving mechanism 5 to extend and retract. Specifically, as shown in fig. 8, the hydraulic station 14 includes an oil tank 1403, an oil outlet line 1404, an oil return line 1405 and a connecting line 1406, the connecting line 1406 has a plurality of connecting branches, and a first telescopic driving mechanism 4 or a second telescopic driving mechanism 5 is disposed in the connecting branches, wherein, since the chassis includes a front leveling system and a rear leveling system, and the front leveling system and the rear leveling system each include two first telescopic driving mechanisms 4 and one second telescopic driving mechanism 5, the hydraulic station 14 in this embodiment includes six connecting branches, specifically, in this embodiment, the first telescopic driving mechanism 4 or the second telescopic driving mechanism 5 are double-acting hydraulic cylinders, each connecting branch includes a first driving connecting line 1407 and a second driving connecting line 1408, the first driving connecting line oil chamber 1407 is communicated with a first oil chamber in the first telescopic driving mechanism 4 or the second telescopic driving mechanism 5, and the second driving connecting line 1408 is communicated with a second oil chamber in the first telescopic driving mechanism 4 or the second telescopic driving mechanism 5; the first end of oil outlet pipeline 1404 is connected with the oil outlet of oil tank 1403, the first ends of a plurality of connecting branches are connected with the second end of oil outlet pipeline 1404, the second ends of a plurality of connecting branches are connected with the first end of oil return pipeline 1405, and the second end of oil return pipeline 1405 is connected with the oil outlet and return opening of oil tank 1403. After flowing out through the oil outlet, the hydraulic oil in the oil tank 1403 flows through the oil outlet pipeline 1404, the connecting pipeline 1406 and the oil return pipeline 1405 in sequence and then flows back to the oil tank from the oil return port, and when flowing through the connecting pipeline 1406, the hydraulic oil enters the first telescopic driving mechanism 4 or the second telescopic driving mechanism 5 to drive the first telescopic driving mechanism 4 or the second telescopic driving mechanism 5 to move.
Further, the hydraulic station 14 further includes a gear pump 1409, a speed regulating valve 1410, a three-position four-way solenoid valve 1411, a check valve 1412, a radiator 1413, and an oil return filter 1414, wherein the gear pump 1409 is provided on the oil outlet line 1404 for pressurizing the hydraulic oil in the oil outlet line 1404; a speed control valve 1410 is provided on the outlet line 1404 for regulating the pressure of the hydraulic oil in the outlet line 1404; the three-position four-way solenoid valve 1411 has a first port, a second port, a third port and a fourth port which are communicated with each other, the first port is connected with the second end of the oil outlet pipe 1404, the second port is connected with the first end of the first drive connecting pipe 1407 (the second end of the first drive connecting pipe 1407 is communicated with a first oil chamber in the first telescopic drive mechanism 4 or the second telescopic drive mechanism 5), the third port is connected with the first end of the second drive connecting pipe 1408 (the second end of the second drive connecting pipe 1408 is communicated with a second oil chamber in the first telescopic drive mechanism 4 or the second telescopic drive mechanism 5), and the fourth port is connected with the first end of the oil return pipe 1405 and is used for conveying and controlling the flow direction of hydraulic oil in the connecting pipe 1406; the check valve 1412 is disposed on the oil return pipeline 1405, and is used for making hydraulic oil in the oil return pipeline 1405 flow in a single direction; the radiator 1413 is arranged on the oil return pipeline 1405 and used for radiating heat of hydraulic oil in the oil return pipeline 1405; an oil return filter 1414 is also provided on the oil return line 1405 for filtering out impurities in the hydraulic oil and avoiding bringing the impurities into the tank 1403.
Specifically, in the present embodiment, when the frame 2 in the chassis is in a horizontal state (i.e., when the body of the agricultural machine is in a horizontal state), neither the first telescopic driving mechanism 4 nor the second telescopic driving mechanism 5 needs to be operated; or the first telescopic driving mechanism 4 and the second telescopic driving mechanism 5 can be extended or shortened simultaneously to adjust the ground clearance of the frame 2 in the chassis;
when the frame 2 in the chassis inclines to the left, the second telescopic driving mechanism 5 is controlled to shorten (in the embodiment, the second telescopic driving mechanism 5 is arranged on the right side of the first frame connecting structure 1), and at the moment, the frame 2 pivots clockwise around the middle connecting shaft 7, so that the transverse leveling function of the frame 2 is realized, and the frame 2 is kept horizontal in the left-right direction;
as shown in fig. 9, when the frame 2 inclines to the right in the chassis, the second telescopic driving mechanism 5 is controlled to extend (the second telescopic driving mechanism 5 is disposed at the right side of the first frame connecting structure 1 in the present embodiment), and the frame 2 pivots counterclockwise about the intermediate connecting shaft 7, thereby implementing the lateral leveling function of the frame 2, so that the frame 2 is kept horizontal in the left-right direction;
when the frame 2 in the chassis is inclined forwards, the first telescopic driving mechanism 4 in the front leveling system extends to push each connecting rod in the front leveling system to pivot clockwise (namely pivot upwards) around the axle pivot connecting end, so that the parallelogram structure in the front leveling system extends to lift the front end of the frame 2 to keep the front end of the frame horizontal with the rear end of the frame 2;
as shown in fig. 10, when the frame 2 in the chassis is tilted backwards, the first telescopic drive mechanism 4 in the rear leveling system extends, pushing each side link in the rear leveling system to pivot counterclockwise (i.e., upward) about the axle pivot connection end, causing the parallelogram structure in the rear leveling system to extend so as to lift the rear end of the frame 2 to be level with the front end of the frame 2.
In one embodiment of the invention, the hydraulic station 14 further comprises a unidirectional balancing valve 1401 and a bidirectional balancing valve 1402 for adjusting the negative load balancing of the first telescopic drive mechanism 4, respectively the second telescopic drive mechanism 5. In this embodiment, the negative load means that the force receiving direction of the first telescopic driving mechanism 4 and the second telescopic driving mechanism 5 is consistent with the moving direction thereof. In the process of longitudinal leveling of the chassis, the gravity direction of the agricultural machinery vehicle body is always downward along the vertical direction, namely the load direction of the first telescopic driving mechanism 4 is always downward vertically, and the load direction of the first telescopic driving mechanism 4 is consistent with the motion direction when retracting, so that the adjustment of the load balance can be realized only by arranging the one-way balance valve 1401 in the connecting pipeline 1406 where the first telescopic driving mechanism 4 is located; in the process of transverse leveling of the chassis, the gravity center of the vehicle body can be changed (that is, the position of the gravity center in the left-right direction is uncertain) due to leftward or rightward inclination of the vehicle body, and further the change of the load direction of the second telescopic driving mechanism 5 during transverse leveling is caused, so that the second telescopic driving mechanism 5 may have a negative load in the extending and retracting processes, and therefore a bidirectional balance valve 1402 is required to be arranged to adjust the balance of the negative load of the second telescopic driving mechanism 5 at this time.
Another embodiment of the present invention provides a novel agricultural machine, which includes the chassis provided in the above embodiments, so that the chassis of the agricultural machine has a simple and compact structure, and the hydraulic station 14 can be controlled according to the terrain change to adjust the inclination angle of the chassis, so that the working platform of the agricultural machine is always in a horizontal state, and the agricultural machine is more easily accepted by the farmers, and the safety and comfort of the farmers during using the agricultural machine are improved.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the specific features in any suitable way, and the invention will not be further described in relation to the various possible combinations in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and those skilled in the art can make variations, modifications, substitutions and alterations to the above embodiments within the scope of the present invention.
Claims (10)
1. A chassis leveling system, comprising:
a first frame connection structure (1) for connecting a frame (2) of the chassis;
the connecting rod assembly (3) comprises a first connecting rod (301) and a second connecting rod (302), the first connecting rod (301) and the second connecting rod (302) are respectively distributed on the left side and the right side of the first vehicle frame connecting structure (1), respective first ends of the first connecting rod (301) and the second connecting rod (302) are in pivot connection with the first vehicle frame connecting structure (1), and second ends of the first connecting rod (301) and the second connecting rod (302) are in pivot connection with a vehicle axle; and
the first telescopic driving mechanism (4) is used for driving the connecting rod assembly (3) to pivot around the pivoting connection end of the axle (10), so that the connecting rod assembly (3) can drive the first frame connecting structure (1) to move up and down.
2. Chassis leveling system according to claim 1, wherein the vehicle frame (2) has a pivot centre, the chassis leveling system further comprising a second telescopic drive mechanism (5) arranged on the left and/or right side of the first frame connection structure (1) for driving the vehicle frame (2) to pivot about the pivot centre.
3. The chassis leveling system according to claim 2, further comprising a second frame connection structure (6) fixedly connected to the frame (2) and an intermediate connection shaft (7), the intermediate connection shaft (7) being connected to the first frame connection structure (1) through the second frame connection structure (6).
4. Chassis leveling system according to claim 2, characterized in that a first pivot axle (8) is provided on the first frame connection structure (1), a second pivot axle (9) is provided on the bottom of the frame (2), the lower end of the second telescopic drive mechanism (5) is pivotally connected to the first pivot axle (8), and the upper end of the second telescopic drive mechanism (5) is pivotally connected to the second pivot axle (9).
5. Chassis leveling system according to claim 1, further comprising a first (11) and a second (12) articulation seat, both arranged on an axle (10) of the chassis and connected with an axle pivot connection end of the first (301) and the second (302) side link, respectively.
6. Chassis leveling system according to claim 1 or 5, characterized in that it further comprises a third side link (303) and a fourth side link (304) connected between the first frame connection (1) and the axle (10) and coinciding with the motion state of the first side link (301) and the second side link (302), respectively.
7. Chassis, characterized in that it comprises a frame (2) and an axle (10), between which frame (2) and axle (10) a chassis leveling system according to any of claims 1-6 is mounted.
8. Chassis according to claim 7, characterized in that the first telescopic drive mechanism (4) and the second telescopic drive mechanism (5) are hydraulic cylinders, the chassis further comprising a hydraulic station (14) for driving the first telescopic drive mechanism (4) and the second telescopic drive mechanism (5) to telescope.
9. Chassis according to claim 8, characterized in that the hydraulic station (14) comprises a one-way balancing valve (1401) and a two-way balancing valve (1402) for adjusting the load balancing of the first telescopic drive mechanism (4), the second telescopic drive mechanism (5), respectively.
10. An agricultural machine, characterized in that the agricultural machine comprises a chassis according to claims 7-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110694117.4A CN115500105A (en) | 2021-06-22 | 2021-06-22 | Chassis leveling system, chassis and agricultural machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110694117.4A CN115500105A (en) | 2021-06-22 | 2021-06-22 | Chassis leveling system, chassis and agricultural machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115500105A true CN115500105A (en) | 2022-12-23 |
Family
ID=84499668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110694117.4A Pending CN115500105A (en) | 2021-06-22 | 2021-06-22 | Chassis leveling system, chassis and agricultural machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115500105A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116671298A (en) * | 2023-06-19 | 2023-09-01 | 重庆鑫源农机股份有限公司 | Leveling frame and leveling method thereof |
-
2021
- 2021-06-22 CN CN202110694117.4A patent/CN115500105A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116671298A (en) * | 2023-06-19 | 2023-09-01 | 重庆鑫源农机股份有限公司 | Leveling frame and leveling method thereof |
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