CN220147418U - Universal multidirectional chassis mechanism - Google Patents
Universal multidirectional chassis mechanism Download PDFInfo
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- CN220147418U CN220147418U CN202321585886.1U CN202321585886U CN220147418U CN 220147418 U CN220147418 U CN 220147418U CN 202321585886 U CN202321585886 U CN 202321585886U CN 220147418 U CN220147418 U CN 220147418U
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- 230000000712 assembly Effects 0.000 claims abstract description 51
- 238000000429 assembly Methods 0.000 claims abstract description 51
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
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- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
The utility model discloses a universal multidirectional chassis mechanism, which is characterized in that: the steering device comprises a frame, an engine assembly arranged on the frame, four tire assemblies arranged at four corners of the frame, rotatable steering shaft assemblies are respectively arranged at the four corners of the frame, each tire assembly is connected with a corresponding steering shaft assembly through a support arm assembly, the support arm assemblies are hinged with the corresponding steering shaft assemblies, the tire assemblies are driven by hub motors/hydraulic motors, support arm lifting oil cylinders capable of driving the support arm assemblies to turn up and down are connected between each support arm assembly and the corresponding steering shaft assembly, each steering shaft assembly is connected with a steering oil cylinder, one end of each steering oil cylinder is hinged with the steering shaft assembly, and the other end of each steering oil cylinder is hinged with the frame. The four-wheel steering device can conveniently realize four-wheel steering, can obtain smaller steering radius, is flexible to steer, has adjustable chassis height, and can adapt to the requirements of various working conditions.
Description
Technical Field
The utility model relates to a universal multidirectional chassis mechanism, and belongs to the technical field of agricultural machinery.
Background
The existing four-wheel agricultural machinery generally adopts two-wheel steering, when the agricultural machinery works to the land, the agricultural machinery needs to turn around in the working process, but the turning radius of the agricultural machinery adopting the two-wheel steering is large, the turning around can be completed by repeatedly advancing and reversing, and the turning around is very inconvenient; in addition, the agricultural machinery often needs to cross ridges or ridges in the working process, but the chassis height of the existing agricultural machinery is not adjustable.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides the universal multidirectional chassis mechanism which has small turning radius, flexible steering and adjustable chassis height and can adapt to the requirements of various working conditions.
The utility model is realized by the following technical scheme: a universal multidirectional chassis mechanism is characterized in that: the steering device comprises a frame, an engine assembly arranged on the frame, four tire assemblies arranged at four corners of the frame, rotatable steering shaft assemblies are respectively arranged at the four corners of the frame, each tire assembly is connected with a corresponding steering shaft assembly through a support arm assembly, the support arm assemblies are hinged with the corresponding steering shaft assemblies, the tire assemblies are driven by hub motors/hydraulic motors, support arm lifting oil cylinders capable of driving the support arm assemblies to turn up and down are connected between each support arm assembly and the corresponding steering shaft assembly, each steering shaft assembly is connected with a steering oil cylinder, one end of each steering oil cylinder is hinged with the steering shaft assembly, and the other end of each steering oil cylinder is hinged with the frame.
In the utility model, the whole vehicle walking is driven by the hub motors or the hydraulic motors of the four tire assemblies, the four tire assemblies are respectively driven by the hub motors or the hydraulic motors, and the steering requirement of the whole vehicle can be realized by controlling the rotating speeds of different hub motors or hydraulic motors. The four steering oil cylinders can drive the four steering shaft assemblies to rotate respectively, so that four-wheel steering is realized, and the steering angle of the four wheels can be controlled through the steering oil cylinders. When the four support arm assemblies are rotated outwards by 90 degrees, the transverse walking of the whole vehicle can be realized. The four support arm lifting cylinders can respectively drive the four support arm assemblies to turn up and down, so that the whole frame is lifted.
Further, two movable slide block assemblies are respectively arranged at two opposite ends of the frame, and the steering shaft assembly is arranged on the slide block assemblies. The distance between the two tire assemblies can be adjusted by adjusting the distance between the two slide block assemblies, so that the operation requirements of different row spacing of crops can be met, and the operation of the agricultural machinery is more flexible.
Further, the limit angle of inward rotation of the support arm assembly is 45 degrees; the limit angle of the outward rotation of the support arm assembly is 95 degrees.
Further, the limit position of the upward overturning of the support arm assembly is in a horizontal state; the limit angle of the downward overturning of the support arm assembly is 40 degrees relative to the horizontal direction.
The beneficial effects of the utility model are as follows: the four-wheel steering device can conveniently realize four-wheel steering, can obtain smaller steering radius, is flexible in steering, and can facilitate flexible turning of agricultural machinery in a field; when the steering oil cylinder is controlled to enable the support arm assembly to rotate outwards by 90 degrees, the transverse walking of the whole vehicle can be realized; the steering under different working conditions can be conveniently realized by controlling the steering oil cylinder and the rotating speed of each wheel hub motor or hydraulic motor; four support arm assemblies can be respectively driven to turn up and down through the support arm lifting oil cylinder, so that the whole frame is lifted, and the trafficability of the whole vehicle in the case of meeting a ditch and the like can be improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an enlarged schematic illustration of the attachment of one of the tire assemblies to the arm assembly and steering shaft assembly of FIG. 1;
FIG. 3 is a schematic front view of the present utility model with the machine in a low position;
FIG. 4 is a schematic top view of FIG. 3;
FIG. 5 is a schematic front view of the present utility model with the whole machine in a high position;
FIG. 6 is a schematic top view of FIG. 5;
FIG. 7 is a longitudinal walking view of the present utility model;
FIG. 8 is a single wheel steering limit position schematic of the present utility model;
FIG. 9 is a schematic view of the steering limit state of the present utility model;
FIG. 10 is a schematic view of the lateral walking state of the present utility model;
FIG. 11 is a schematic view of one of the steering modes in the lateral walk condition of the present utility model;
FIG. 12 is a schematic view of a second steering mode in a lateral walk condition of the present utility model;
in the figure, 1, a cab assembly, 2, an engine assembly, 3, a frame, 4, a slide block assembly, 5, a steering shaft assembly, 6, a support arm lifting oil cylinder, 7, a support arm assembly, 8, a tire assembly, 9, an in-wheel motor/hydraulic motor, 10 and a steering oil cylinder.
Detailed Description
The utility model is further illustrated by the following non-limiting examples, in conjunction with the accompanying drawings:
as shown in fig. 1-2, a universal multidirectional chassis mechanism comprises a frame 3, four tire assemblies 8 arranged at four corners of the frame 3, and a cab assembly 1 and an engine assembly 2 are arranged on the frame 3. The four corners of the frame 3 are respectively provided with a rotatable steering shaft assembly 5, each tire assembly 8 is connected with the corresponding steering shaft assembly 5 through a support arm assembly 7, one end of the support arm assembly 7 is connected with the tire assembly 8, and the other end of the support arm assembly 7 is hinged with the lower end of the corresponding steering shaft assembly 5. The tire assembly 8 is provided with an in-wheel motor/hydraulic motor 9, by which the tire assembly can be driven to rotate. A support arm lifting oil cylinder 6 is connected between each support arm assembly 7 and the corresponding steering shaft assembly 5, one end of the support arm lifting oil cylinder 6 is hinged with the steering shaft assembly 5, and the other end is hinged with the support arm assembly 7. The support arm assembly 7 can be driven to turn up and down through the support arm lifting oil cylinder 6. Each steering shaft assembly 5 is connected with a steering cylinder 10, one end of the steering cylinder 10 is hinged with a connecting piece fixed on the steering shaft assembly 5, and the other end of the steering cylinder 10 is hinged with the frame 3. The engine assembly may supply oil to drive a cylinder or hydraulic motor.
In order to facilitate the adjustment of the distance between the two tyre assemblies, in this embodiment two movable slide assemblies 4 are provided at each of the opposite ends of the frame 3, and the steering shaft assembly 5 is connected to the slide assemblies 4. When the two slide block assemblies 4 move outwards, the respective steering shaft assemblies 5 and the tire assemblies 8 connected with the steering shaft assemblies 5 can be driven to move outwards together, so that the distance between the two tire assemblies 8 is increased. The spacing between the tire assemblies 8 is adjusted to adapt to different crop row spacing, so that the adaptability of the working conditions is improved.
In the utility model, the whole vehicle walking is driven by the hub motors or the hydraulic motors 9 of the four tire assemblies 8. The four support arm lifting cylinders 6 can respectively drive the four support arm assemblies 7 to turn up and down, so that the frame 3 integrally lifts. The turning limit angle positions of the support arm assembly 7 are as follows: the upper limit position is in a horizontal state; the lower limit angle is 40 degrees from the horizontal direction. Fig. 3 to 4 show the arm assembly 7 in the upper limit position, and fig. 5 to 6 show the arm assembly 7 in the lower limit position.
In the utility model, the four steering oil cylinders 10 can respectively drive the four steering shaft assemblies 5 to rotate, so that the four support arm assemblies 7 and the four tire assemblies 8 are driven to rotate, four-wheel steering is realized, and the steering angles of the four tire assemblies 8 can be controlled through the steering oil cylinders 10. The arm assembly 7 has the same steering action characteristic, and as shown in fig. 8, for example, one arm assembly is used for driving the steering shaft assembly 5 to rotate through the steering oil cylinder 10, so that the arm assembly 7 is turned inwards to a position A and outwards to a position B from a straight running state position O. The limit angle of rotation of the support arm assembly 7 to the inner side is 45 degrees, and the limit angle of rotation to the outer side is 95 degrees. When the vehicle rotates outwards by 90 degrees, the transverse walking of the whole vehicle can be realized, as shown in fig. 10.
When the four support arm assemblies 7 are in the straight state position, the four support arm assemblies can longitudinally walk, as shown in figure 7; when the four support arm assemblies 7 are rotated by 90 degrees from the straight running state, the transverse running of the whole vehicle can be realized, as shown in fig. 10.
The steering device of the utility model turns when walking longitudinally:
as shown in fig. 9, in order to ensure the stability of the center of gravity of the whole vehicle, the outer wheel angle is not more than 46 degrees during steering, the inner wheel angle is about 36.4 degrees according to the ackerman steering principle, the steering is realized by driving the steering oil cylinders 10, and the inner and outer steering wheel angles are realized by controlling different steering oil cylinders 10 during steering.
The steering device of the utility model turns when walking transversely:
there are two steering modes when walking transversely.
The first steering mode, shown in fig. 11, is that the tire assemblies on both sides are turned in opposite directions and turn around the center of the whole vehicle.
The second steering mode, as shown in fig. 12, adopts a left-right forward rotation speed difference formula: that is, the inner tire assembly rotates at a slower speed and the outer tire assembly rotates at a higher speed, and the steering radius of the steering system is greater than that of the first steering system.
Other parts in this embodiment are all of the prior art, and are not described herein.
Claims (4)
1. A universal multidirectional chassis mechanism is characterized in that: the steering device comprises a frame (3), an engine assembly (2) arranged on the frame (3), four tire assemblies (8) arranged at four corners of the frame (3), rotatable steering shaft assemblies (5) are respectively arranged at the four corners of the frame (3), each tire assembly (8) is connected with a corresponding steering shaft assembly (5) through a support arm assembly (7), the support arm assemblies (7) are hinged with the corresponding steering shaft assemblies (5), the tire assemblies (8) are driven by hub motors/hydraulic motors, support arm lifting oil cylinders (6) capable of driving the support arm assemblies (7) to turn up and down are connected between each support arm assembly (7) and the corresponding steering shaft assembly (5), each steering shaft assembly (5) is connected with a steering oil cylinder (10), one end of each steering oil cylinder (10) is hinged with the corresponding steering shaft assembly (5), and the other end of each steering oil cylinder (10) is hinged with the frame (3).
2. The universal multi-way chassis mechanism according to claim 1, wherein: two movable slide block assemblies (4) are respectively arranged at two opposite ends of the frame (3), and the steering shaft assembly (5) is arranged on the slide block assemblies (4).
3. The universal multi-way chassis mechanism according to claim 1, wherein: the limit angle of the inward rotation of the support arm assembly (7) is 45 degrees; the limit angle of the outward rotation of the support arm assembly (7) is 95 degrees.
4. A universal multi-way chassis mechanism according to claim 1 or 2 or 3, characterized in that: the limit position of the upward overturning of the support arm assembly (7) is in a horizontal state; the limit angle of the downward overturning of the support arm assembly (7) is 40 degrees relative to the horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321585886.1U CN220147418U (en) | 2023-06-21 | 2023-06-21 | Universal multidirectional chassis mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321585886.1U CN220147418U (en) | 2023-06-21 | 2023-06-21 | Universal multidirectional chassis mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220147418U true CN220147418U (en) | 2023-12-08 |
Family
ID=89005958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321585886.1U Active CN220147418U (en) | 2023-06-21 | 2023-06-21 | Universal multidirectional chassis mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220147418U (en) |
-
2023
- 2023-06-21 CN CN202321585886.1U patent/CN220147418U/en active Active
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