Harvester drive axle leveling mechanism

Abstract

A harvester drive axle leveling mechanism comprises a drive axle body and wheel mounting bases on the two sides of the drive axle body, and the wheel mounting bases on the two sides are connected to the drive axle body through corresponding suspension mechanisms. The suspension mechanism comprises an upper suspension and a lower suspension which are arranged up and down, the upper suspension and the lower suspension are of arm-shaped structures, one end of the upper suspension and one end of the lower suspension are rotationally connected with the drive axle body, and the other end of the upper suspension and the other end of the lower suspension are rotationally connected with the wheel mounting seat; the upper suspension, the lower suspension, the drive axle body and the wheel mounting seat form a parallel four-bar mechanism; and an adjusting driving mechanism for driving the suspension mechanism to rotate relative to the driving axle body is arranged between the driving axle body and the suspension mechanism. While the balance of the vehicle body is adjusted, the axles of the wheels can be kept in a horizontal state all the time, so that the wheels have a more stable supporting state on the ground. And on the other hand, the supporting structure of the parallel four-connecting-rod mechanism can enable the wheels to bear larger lateral force, has higher supporting strength and can adapt to the complex ground driving environment.

Description

Technical Field

[0001] The utility model relates to a harvester drive axle, in particular to a harvester drive axle leveling mechanism. Background Art

[0002] Harvesters are important mechanical equipment for agricultural production, which are of great significance to improving agricultural production efficiency and saving labor. They have been widely promoted and applied in plain areas. However, our country has a vast territory, and many cultivated lands are located in hilly or mountainous areas. Such plots are small and irregular, and the ground slope is constantly changing. When ordinary harvesters are operating on such ground, the body tilts and shakes, resulting in an unstable center of gravity, which increases the risk of the harvester overturning.

[0003] The drive axle of the harvester is a load-bearing connection structure between the harvester body and the wheels. By setting an adjustment mechanism on the drive axle, the body can be balanced by adjusting the adjustment mechanism when encountering a slope, which can improve the stability of the body. Among the current adjustment structure settings, one is to set an adjustment mechanism between the axle and the body. When encountering a slope, the adjustment mechanism controls the body to tilt and deflect relative to the axle, and keeps the body in a horizontal state when the axle is tilted due to the slope. This structure can alleviate the situation of the center of gravity offset of the body to a certain extent, but because the wheel is tilted on the slope, it cannot play a stable supporting role, there is still a risk of rollover, and there is a great damage to the wheel axle. Another way is to set a hydraulic cylinder between the wheel and the axle as a supporting connection. When encountering a slope, the hydraulic cylinder controls the wheel to rise or fall straightly, so as to adjust the body to a balanced state. This structure can keep the wheel axle in a horizontal state, which is conducive to the support of the wheel on the ground. However, since the hydraulic cylinder has a weak bearing capacity for lateral force, it performs better on an ideal slope, but for hilly and mountainous areas with complex ground conditions, the risk of damage is very high. Utility Model Content

[0004] The technical problem solved by the utility model is to overcome the defect that the harvester is prone to overturning due to unstable center of gravity when traveling on hills or mountains, and to provide a harvester drive axle leveling mechanism.

[0005] The utility model adopts the following technical solution to solve the above-mentioned technical problems: a harvester drive axle leveling mechanism, comprising a drive axle body and wheel mounting seats arranged on both sides of the drive axle body, the wheels are arranged on the wheel mounting seats, and the wheel mounting seats on both sides are respectively connected to the drive axle body through corresponding suspension mechanisms; the suspension mechanism comprises an upper suspension and a lower suspension arranged up and down, the upper suspension and the lower suspension are arm-shaped structures, one end of the upper suspension and the lower suspension are both rotatably connected to the drive axle body, and the other end are both rotatably connected to the wheel mounting seat; the upper suspension, the lower suspension, the drive axle body and the wheel mounting seat form a parallel four-bar linkage; an adjusting drive mechanism for driving the suspension mechanism to rotate relative to the drive axle body is provided between the drive axle body and the suspension mechanism.

[0006] The connecting lines between the rotation connection points at both ends of the upper suspension and the lower suspension are parallel to each other, and the connecting lines between the rotation connection points on the driving axle body and the wheel mounting seat respectively used to connect the upper suspension and the lower suspension are parallel to each other.

[0007] The top of the driving axle body is provided with a mounting surface for supporting the harvester body.

[0008] The adjustment drive mechanism comprises a first drive cylinder and a second drive cylinder; the first drive cylinder and the second drive cylinder are rotatably arranged on the drive bridge body and are respectively connected to the suspension mechanisms on both sides of the drive bridge body.

[0009] A swing arm is fixedly provided on the lower suspension, and the first driving oil cylinder and the second driving oil cylinder are rotatably connected to the swing arms on the lower suspensions on both sides of the driving axle body respectively to drive the lower suspension to rotate relative to the driving axle body.

[0010] The driving bridge body adopts a frame body with an inner cavity structure, and shaft supports for connecting the suspension mechanism are respectively arranged on both sides of the frame body. The adjusting driving mechanism is arranged in the inner cavity of the driving bridge body 1.

[0011] The first driving oil cylinder and the second driving oil cylinder are arranged in the inner cavity of the driving bridge body in a staggered and cross-arranged manner.

[0012] An adjustment amplitude detection mechanism for detecting the deflection amount or position of the suspension mechanism relative to the driving axle body is provided between the driving axle body and the suspension mechanism.

[0013] The adjustment amplitude detection mechanism adopts two sets of position sensors, which are respectively connected to the suspension mechanisms on both sides.

[0014] The wheel mounting seat is provided with a wheel side driving mechanism and is connected to the wheel via the wheel side driving mechanism.

[0015] The beneficial effects of the utility model are: the parallel four-bar linkage mechanism is formed by the driving bridge body and the suspension mechanisms on both sides thereof to connect the wheels, and the parallel four-bar linkage mechanism can be adjusted according to the ground slope to achieve the up and down parallel movement of the wheels, and while adjusting the balance of the vehicle body, the wheel axle can be kept in a horizontal state at all times, so that the wheels have a more stable support state on the ground. On the other hand, the support structure of the parallel four-bar linkage mechanism can enable the wheels to withstand greater lateral forces, has higher support strength, and can adapt to complex ground driving environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the arrangement structure of the drive axle body and the suspension mechanism in the utility model.

[0017] Figure 2 It is a schematic diagram of the driving axle body and the suspension mechanism of the utility model.

[0018] Markings in the figure: 1. driving axle body, 2. suspension mechanism, 201. upper suspension, 202. lower suspension, 203. swing arm, 3. adjusting driving mechanism, 301. first driving cylinder, 302. second driving cylinder, 4. wheel, 5. wheel mounting seat, 6. wheel side driving mechanism, 7. adjustment amplitude detection mechanism, 8. ground. DETAILED DESCRIPTION

[0019] The following is a clear and complete description of the technical solution of the utility model in conjunction with the accompanying drawings and specific implementation methods. The specific contents listed in the following embodiments are not limited to the technical features necessary for the technical problems to be solved by the technical solutions recorded in the claims. At the same time, the enumerated embodiments are only part of the present invention, not all embodiments.

[0020] like Figure 1 As shown in the figure, the harvester drive axle leveling mechanism of the utility model comprises a drive axle body 1, a suspension mechanism 2 and an adjustment drive mechanism 3. Among them, the top surface of the drive axle body 1 has a body mounting surface for supporting the harvester body. Wheel mounting seats 5 are provided on both sides of the drive axle body 1, and wheels 4 are arranged on the wheel mounting seats 5. The wheel mounting seats 5 on both sides are respectively connected to the drive axle body 1 through corresponding suspension mechanisms 2 as shown in FIG. Figure 1As shown, a set of suspension mechanisms 2 are respectively provided on both sides of the driving axle body 1, corresponding to the wheels 4 on both sides. The suspension mechanism 2 includes an upper suspension 201 and a lower suspension 202, which can adopt a rod or plate-shaped support component to form a cantilever support structure. The upper suspension 201 and the lower suspension 202 are arranged up and down and spaced apart, and one end of the upper suspension 201 and the lower suspension 202 faces the driving axle body 1, and is rotatably connected to the driving axle body 1 through a pin or the like. The other end of the upper suspension 201 and the lower suspension 202 faces the wheel mounting seat 5, and is rotatably connected to the wheel mounting seat 5. A wheel side drive mechanism 6 (such as a drive motor) is fixedly arranged in the wheel mounting seat 5, and the wheel is connected through the wheel side drive mechanism.

[0021] Figure 2 Shown Figure 1 Schematic diagram of equivalent principle of the structure shown. As shown in the figure, the arm-like structures equivalent to the upper suspension 201 and the lower suspension 202 are parallel to each other, and the equivalent connection surfaces on the drive bridge body 1 and the wheel mounting seat 5 for connecting the suspension mechanism 2 are also parallel to each other. Specifically, the lines between the rotation connection points at both ends of the upper suspension 201 and the lower suspension 202 (that is, the connection points connecting the drive bridge body 1 and the wheel mounting seat 5 respectively) are parallel to each other. The lines between the rotation connection points on the drive bridge body 1 and the wheel mounting seat 5 for connecting the upper suspension and the lower suspension are also parallel to each other, so that the upper suspension, the lower suspension, the drive bridge body and the wheel mounting seat form a parallel four-bar linkage. Using this parallel four-bar linkage, the wheel can be adjusted to move up and down relative to the drive bridge body 1 according to the ground inclination, so as to adjust the drive bridge body and the harvester body above it to the level. At the same time, the equivalent connection surfaces on the drive bridge body 1 and the wheel mounting seat 5 for connecting the suspension mechanism 2 are also parallel to each other. Therefore, as long as the drive bridge body 1 is kept always horizontal, the wheel mounting seat 5 can also keep the level of the wheel 4 rotating shaft accordingly.

[0022] like Figure 1As shown, the movement of the suspension mechanism 2 is driven by the adjustment drive mechanism 3, which is connected between the driving bridge body 1 and the suspension mechanism 2, and is used to drive the suspension mechanism to rotate relative to the driving bridge body. In the illustrated embodiment, the adjustment drive mechanism 3 includes a first driving cylinder 301 and a second driving cylinder 302. The right end of the first driving cylinder 301 is rotationally connected to the driving bridge body 1, and the left end is rotationally connected to the lower suspension 202 on the left side. The left end of the second driving cylinder 302 is rotationally connected to the driving bridge body 1, and the right end is rotationally connected to the lower suspension 202 on the right side. The first driving cylinder 301 and the second driving cylinder 302 are in a staggered and crossed form, and are respectively used to drive the lower suspension 202 on both sides to rotate. Similarly, the first driving cylinder 301 and the second driving cylinder 302 can also be selected to be rotationally connected to the upper suspension 201, and are used to drive the upper suspension 201 to rotate. By driving one of the upper suspension 201 or the lower suspension 202 to rotate, the linkage of the parallel four-bar linkage can be used to realize the deflection of the entire suspension mechanism 2 and the up and down movement of the wheel.

[0023] exist Figure 1 In the structure, a swing arm 203 is fixed on the lower suspension 202, and the swing arm 203 extends toward the upper suspension 201. The first driving cylinder 301 and the second driving cylinder 302 are respectively rotatably connected to the swing arms on the lower suspensions on both sides of the driving bridge body 1 to drive the lower suspension to rotate relative to the driving bridge body.

[0024] exist Figure 1 In the illustrated embodiment, the driving bridge body 1 adopts a frame body with an inner cavity structure, and the two sides of the frame body are respectively provided with a rotating shaft support for connecting the suspension mechanism 2. The first driving oil cylinder 301 and the second driving oil cylinder 302 are arranged in the inner cavity of the driving bridge body 1, so that the overall structure is more compact. The inner cavity of the driving bridge body 1 is open in the left and right directions of the harvester, so that the first driving oil cylinder 301 and the second driving oil cylinder 302 can extend out to connect the suspension mechanism 2. The inner cavity of the driving bridge body 1 can be closed or open in the front and rear directions of the harvester, and only the corresponding support plate or arm structure can connect the upper and lower parts of the driving bridge body 1.

[0025] like Figure 1 As shown, an adjustment amplitude detection mechanism 7 is provided between the driving bridge body 1 and the suspension mechanism 2, for detecting the deflection amount or position of the suspension mechanism 2 relative to the driving bridge body 1. In the illustrated embodiment, the adjustment amplitude detection mechanism 7 uses two sets of position sensors, corresponding to the suspension mechanisms 2 connected on both sides.

[0026] The harvester drive axle leveling mechanism of the utility model can adjust the vehicle body to a horizontal state when encountering a slope. Figure 2As shown, when the ground is a slope that slopes down to the right, the vehicle body will tilt to the right. At this time, the suspension mechanism 2 on the right side of the drive axle body 1 is controlled to deflect downward relative to the drive axle body, so that the right wheel is lowered and the right side of the drive axle body 1 is raised. At the same time, the suspension mechanism 2 on the left side of the drive axle body 1 is controlled to deflect upward relative to the drive axle body, so that the left wheel is raised and the left side of the drive axle body 1 is lowered, thereby adjusting the vehicle body to a balanced state.

[0027] The above description of the specific implementation is only used to help understand the technical concept and core idea of ​​the utility model. Although the technical solution is described and illustrated using a specific preferred embodiment, it should not be understood as a limitation of the utility model itself. Those skilled in the art can make various changes in form and details without departing from the technical concept. These easily conceived changes or replacements should be included in the scope of protection of the utility model.

Claims

1. A harvester drive axle leveling mechanism, characterized in that: The invention comprises a driving axle body (1) and wheel mounting seats (5) arranged on both sides of the driving axle body, wheels (4) being arranged on the wheel mounting seats (5), and the wheel mounting seats (5) on both sides being connected to the driving axle body (1) via corresponding suspension mechanisms (2); the suspension mechanism (2) comprising an upper suspension (201) and a lower suspension (202) arranged up and down, the upper suspension (201) and the lower suspension (202) being arm-shaped structures, one end of the upper suspension (201) and the lower suspension (202) being rotationally connected to the driving axle body (1), and the other end of the upper suspension (201) and the lower suspension (202) being rotationally connected to the wheel mounting seats (5); the upper suspension, the lower suspension, the driving axle body and the wheel mounting seats forming a parallel four-bar linkage; and an adjusting driving mechanism (3) for driving the suspension mechanism to rotate relative to the driving axle body is provided between the driving axle body (1) and the suspension mechanism (2).

2. A harvester drive axle leveling mechanism according to claim 1, characterized in that: The connecting lines between the rotational connection points at both ends of the upper suspension (201) and the lower suspension (202) are parallel to each other, and the connecting lines between the rotational connection points on the drive axle body (1) and the wheel mounting seat (5) respectively used to connect the upper suspension and the lower suspension are parallel to each other.

3. A harvester drive axle leveling mechanism according to claim 1, characterized in that: The top of the driving axle body (1) is provided with a mounting surface for supporting a harvester body.

4. A harvester drive axle leveling mechanism as claimed in claim 1, characterized in that: The adjustment drive mechanism (3) comprises a first drive cylinder (301) and a second drive cylinder (302); the first drive cylinder and the second drive cylinder are rotatably arranged on the drive bridge body (1) and are respectively connected to the suspension mechanisms (2) on both sides of the drive bridge body.

5. A harvester drive axle leveling mechanism as claimed in claim 4, characterized in that: A swing arm (203) is fixedly provided on the lower suspension (202), and the first driving oil cylinder and the second driving oil cylinder are rotatably connected to the swing arms on the lower suspensions on both sides of the driving axle body respectively, so as to drive the lower suspension to rotate relative to the driving axle body.

6. A harvester drive axle leveling mechanism as claimed in claim 4, characterized in that: The driving bridge body (1) adopts a frame body with an inner cavity structure, and shaft supports for connecting the suspension mechanism (2) are respectively provided on both sides of the frame body, and the adjustment driving mechanism (3) is arranged in the inner cavity of the driving bridge body (1).

7. A harvester drive axle leveling mechanism as claimed in claim 6, characterized in that: The first driving oil cylinder (301) and the second driving oil cylinder (302) are arranged in a staggered and cross-arranged manner in the inner cavity of the driving bridge body (1).

8. The harvester drive axle leveling mechanism according to claim 1, characterized in that: An adjustment amplitude detection mechanism (7) for detecting a deflection amount or position of the suspension mechanism (2) relative to the drive bridge body (1) is provided between the drive bridge body (1) and the suspension mechanism (2).

9. A harvester drive axle leveling mechanism as claimed in claim 8, characterized in that: The adjustment amplitude detection mechanism (7) adopts two sets of position sensors, which are respectively connected to the suspension mechanisms (2) on both sides.

10. The harvester drive axle leveling mechanism according to claim 1, characterized in that: The wheel mounting seat (5) is provided with a wheel side driving mechanism (6) and is connected to the wheel (4) via the wheel side driving mechanism (6).

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