Corn harvester steering axle structure capable of reducing turning radius

Abstract

The utility model discloses a corn harvester steering axle structure capable of reducing the turning radius, relates to the technical field of steering axle structures, and aims at solving the problem that the turning radius of an existing traditional corn harvester is too large. Which comprises a harvester chassis, a steering axle and wheels, the harvester chassis is located above the steering axle, the wheels are arranged at the two ends of the steering axle, the harvester is characterized by further comprising a steering driving mechanism, the harvester chassis is rotationally connected with the steering axle, and the steering driving mechanism is located between the steering axle and the harvester chassis. The driving device is used for driving the harvester chassis and the steering axle to rotate relatively. The harvester chassis is driven by the steering driving mechanism to rotate relative to the steering axle, so that the steering angle of the steering axle is increased in an auxiliary manner, and the turning radius is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of steering bridge structures, and specifically relates to a steering bridge structure of a corn harvester that can reduce the turning radius. Background Art

[0002] At present, a corn harvester uses a steering oil cylinder carried by its own steering bridge structure to achieve steering. Due to the limitation of the structural size of the steering bridge itself, when the steering angle reaches a certain degree, the steering bridge cannot rotate further, and the turning radius of the entire corn harvester cannot be further reduced. In some small corn planting plots in mountainous areas, hilly areas, etc., due to the large turning radius of traditional corn harvesters, it is inconvenient to operate the corn harvester during the harvesting operation. Secondly, affected by the turning radius, when carrying out the harvesting operation in large field plots, a large area of the field head is occupied for turning, and the corn at the field head is easily damaged, which in turn affects the yield per mu and wastes food. Therefore, there is an urgent need for a corn harvester with a simple structure that can reduce the turning radius. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a steering bridge structure of a corn harvester that can reduce the turning radius, so as to solve the problem of the too large turning radius of existing traditional corn harvesters.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a steering bridge structure of a corn harvester that can reduce the turning radius, including a harvester chassis, a steering bridge, and wheels. The harvester chassis is located above the steering bridge, and both ends of the steering bridge are provided with wheels. It also includes a steering drive mechanism. The harvester chassis is rotatably connected to the steering bridge, and the steering drive mechanism is located between the steering bridge and the harvester chassis, and is used to drive the relative rotation of the harvester chassis and the steering bridge.

[0005] Further, a rotating shaft is rotatably installed on the steering bridge, and a shaft sleeve is arranged on the periphery of the rotating shaft. The shaft sleeve is fixedly connected to the steering bridge tube at the bottom of the harvester chassis.

[0006] Further, the steering drive mechanism includes a steering motor and a transmission housing. The transmission housing is fixed on the steering bridge, the steering motor is fixed at one end of the transmission housing, a worm is arranged in the transmission housing and is fixedly connected to the output end of the steering motor, and a worm gear meshing with the worm is fixed on the rotating shaft.

[0007] Further, a rotating shaft is fixedly installed on the steering bridge, a shaft sleeve is arranged on the periphery of the rotating shaft, a bearing is arranged between the shaft sleeve and the rotating shaft, and the shaft sleeve is fixedly connected to the steering bridge tube at the bottom of the harvester chassis.

[0008] Further, the steering drive mechanism is a steering oil cylinder. The cylinder barrel of the steering oil cylinder is hinged to the steering bridge, and the piston rod of the steering oil cylinder is hinged to the harvester chassis.

[0009] Further, an auxiliary steering support is provided at the bottom of the harvester chassis, and the piston rod of the steering oil cylinder is hinged to the auxiliary steering support, thereby realizing the hinged connection between the piston rod of the steering oil cylinder and the harvester chassis.

[0010] Further, an auxiliary steering mechanism is further included. The auxiliary steering mechanism includes an auxiliary oil cylinder and a swing rod. The cylinder barrel of the auxiliary oil cylinder is hinged to the steering axle, the piston rod of the auxiliary oil cylinder is hinged to one end of the swing rod, the swing rod is rotatably connected to the steering axle, and one swing rod is provided at each end of the steering axle. The wheel axle of the wheel is fixedly connected to the swing rod.

[0011] Further, a connecting rod is further included. One end of the connecting rod is hinged to the other end of one of the swing rods, and the other end of the connecting rod is hinged to the other end of the other swing rod.

[0012] The beneficial effects of the present utility model are as follows: The present utility model drives the rotation of the harvester chassis relative to the steering axle through the steering drive mechanism, realizes the auxiliary increase of the steering angle of the steering axle, and thus reduces the turning radius. It effectively solves the problem of the relatively large turning radius of the existing corn harvester. By using this structure, the turning radius of the corn harvester can be reduced, thereby enhancing the maneuverability of the corn harvester and improving the applicability of the corn harvester in mountainous and hilly small plot corn planting areas. Description of the Drawings

[0013] Figure 1 One of the three-dimensional views of Embodiment 1 of the present utility model;

[0014] Figure 2 The front view of Embodiment 1 of the present utility model;

[0015] Figure 3 The bottom view of Embodiment 1 of the present utility model;

[0016] Figure 4 One of the three-dimensional views of Embodiment 1 of the present utility model;

[0017] Figure 5 The front view of Embodiment 2 of the present utility model;

[0018] Figure 6 The top view of Embodiment 2 of the present utility model;

[0019] In the figure: 1 harvester chassis, 11 steering axle tube, 2 steering axle, 21 rotating shaft, 3 wheel, 4 shaft sleeve, 5 auxiliary oil cylinder, 6 swing rod, 7 support shaft, 8 connecting rod, 9 steering drive mechanism, 91 steering motor, 92 transmission housing, 10 auxiliary steering support, 12 cross beam, 13 bearing. Detailed Embodiments

[0020] As shown Figures 1 to 6 in the figure, the utility model includes a harvester chassis 1, a steering axle 2, wheels 3, a bushing 4, a steering drive mechanism 9 and an auxiliary oil cylinder 5. The following will describe the utility model in detail with reference to the accompanying drawings.

[0021] As shown Figures 1 to 6 in the figure, a steering axle structure of a corn harvester capable of reducing the turning radius includes a harvester chassis 1, a steering axle 2 and wheels 3. The harvester chassis 1 is located above the steering axle 2, and both ends of the steering axle 2 are provided with wheels 3. It further includes a steering drive mechanism 9. The harvester chassis 1 is rotatably connected to the steering axle 2, and the steering drive mechanism 9 is located between the steering axle 2 and the harvester chassis 1 and is used to drive the relative rotation of the harvester chassis 1 and the steering axle 2, thereby reducing the turning radius of the corn harvester. For the specific structure of the steering drive mechanism 9, the utility model provides two implementation manners, and the following will describe the two implementation manners of the steering drive mechanism 9 in detail.

[0022] Embodiment 1:

[0023] As shown Figure 1 in the figure, a rotating shaft 21 is rotatably installed on the steering axle 2, and a bushing 4 is arranged around the rotating shaft 21. As shown Figure 2 in the figure, the bushing 4 is fixedly connected to the steering axle tube 11 at the bottom of the harvester chassis 1. The steering drive mechanism 9 includes a steering motor 91 and a transmission housing 92. The transmission housing 92 is fixed on the steering axle 2, the steering motor 91 is fixed at one end of the transmission housing 92, a worm is arranged in the transmission housing 92 and is fixedly connected to the output end of the steering motor 91, and a worm gear meshing with the worm is fixed on the rotating shaft 21. After starting the steering motor 91, the steering motor 91 drives the rotation of the worm, the rotation of the worm drives the rotation of the worm gear, the rotation of the worm gear drives the rotation of the rotating shaft 21, and the harvester chassis 1 rotates synchronously when the rotating shaft 21 rotates.

[0024] Embodiment 2:

[0025] As shown Figure 5 and Figure 6 in the figure, a rotating shaft 21 is fixedly installed on the steering axle 2, a bushing 4 is arranged around the rotating shaft 21, a bearing 13 is arranged between the bushing 4 and the rotating shaft 21, and the bushing 4 is fixedly connected to the steering axle tube 11 at the bottom of the harvester chassis 1. The steering drive mechanism 9 is a steering oil cylinder. The cylinder barrel of the steering oil cylinder is hinged to the steering axle 2, and the piston rod of the steering oil cylinder is hinged to the harvester chassis 1. Specifically, as shown Figure 6 in the figure, a cross beam 12 is arranged on the harvester chassis 1, an auxiliary steering support 10 is arranged at the bottom of the cross beam 12, and the piston rod of the steering oil cylinder is hinged to the auxiliary steering support 10, thereby realizing the hinge connection between the piston rod of the steering oil cylinder and the harvester chassis 1. When the piston rod of the steering oil cylinder expands and contracts, it pushes the auxiliary steering support 10 to rotate around the rotating shaft 21, thereby driving the rotation of the harvester chassis 1 relative to the steering axle 2.

[0026] For auxiliary steering, the utility model is further provided with an auxiliary steering mechanism, such as Figures 1 to 6 shown. The auxiliary steering mechanism includes an auxiliary oil cylinder 5 and a swing rod 6. The cylinder barrel of the auxiliary oil cylinder 5 is hinged to the steering bridge 2, the piston rod of the auxiliary oil cylinder 5 is hinged to one end of the swing rod 6, the swing rod 6 is rotatably connected to the steering bridge 2 through a support shaft 7, and both ends of the steering bridge 2 are respectively provided with a swing rod 6. The axle of the wheel 3 is fixedly connected to the swing rod 6. It further includes a connecting rod 8. One end of the connecting rod 8 is hinged to the other end of one of the swing rods 6, and the other end of the connecting rod 8 is hinged to the other end of the other swing rod 6. When the piston rod of the auxiliary oil cylinder 5 on one side extends, it pushes the swing rod 6 to rotate relative to the support shaft 7, and then the wheel 3 on this side rotates around the support shaft 7. At this time, the swing of the swing rod 6 on the other side is pushed through the connecting rod 8, and then the wheel 3 on the other side rotates around the support shaft 7 on the same side accordingly. The wheels 3 on both sides rotate synchronously, thereby realizing steering.

[0027] The utility model drives the rotation of the harvester chassis relative to the steering bridge through the steering drive mechanism, realizes auxiliary increase of the steering angle of the steering bridge, and thus reduces the turning radius. It effectively solves the problem of the relatively large turning radius of the existing corn harvester. Using this structure can reduce the turning radius of the corn harvester, thereby enhancing the maneuverability of the corn harvester and improving the applicability of the corn harvester in mountainous and hilly small plot corn planting areas.

Claims

1. A steering bridge structure of a corn harvester capable of reducing the turning radius, comprising a harvester chassis, a steering bridge and wheels. The harvester chassis is located above the steering bridge, and both ends of the steering bridge are provided with wheels. It is characterized in that, It further includes a steering drive mechanism. The harvester chassis is rotatably connected to the steering axle. The steering drive mechanism is located between the steering axle and the harvester chassis and is used to drive the relative rotation between the harvester chassis and the steering axle.

2. The steering bridge structure of a corn harvester capable of reducing the turning radius according to claim 1, characterized in that, A rotating shaft is rotatably installed on the steering axle. A shaft sleeve is provided on the periphery of the rotating shaft. The shaft sleeve is fixedly connected to the steering axle tube at the bottom of the harvester chassis.

3. The steering bridge structure of a corn harvester capable of reducing the turning radius according to claim 2, characterized in that, The steering drive mechanism includes a steering motor and a transmission housing. The transmission housing is fixed on the steering axle. The steering motor is fixed at one end of the transmission housing. A worm is provided in the transmission housing and is fixedly connected to the output end of the steering motor. A worm gear meshing with the worm is fixed on the rotating shaft.

4. A steering bridge structure of a corn harvester capable of reducing the turning radius according to claim 1, characterized in that, A rotating shaft is fixedly installed on the steering axle. A shaft sleeve is provided on the periphery of the rotating shaft. A bearing is provided between the shaft sleeve and the rotating shaft. The shaft sleeve is fixedly connected to the steering axle tube at the bottom of the harvester chassis.

5. The steering bridge structure of a corn harvester capable of reducing the turning radius according to claim 4, characterized in that, The steering drive mechanism is a steering oil cylinder. The cylinder barrel of the steering oil cylinder is hingedly connected to the steering axle. The piston rod of the steering oil cylinder is hingedly connected to the harvester chassis.

6. The steering bridge structure of a corn harvester capable of reducing the turning radius according to claim 5, characterized in that, An auxiliary steering support is provided at the bottom of the harvester chassis. The piston rod of the steering oil cylinder is hingedly connected to the auxiliary steering support, thereby realizing the hinged connection between the piston rod of the steering oil cylinder and the harvester chassis.

7. A steering bridge structure of a corn harvester capable of reducing the turning radius according to claim 3 or 6, characterized in that, It further includes an auxiliary steering mechanism. The auxiliary steering mechanism includes an auxiliary oil cylinder and a swing rod. The cylinder barrel of the auxiliary oil cylinder is hingedly connected to the steering axle. The piston rod of the auxiliary oil cylinder is hingedly connected to one end of the swing rod. The swing rod is rotatably connected to the steering axle and there is a swing rod at each end of the steering axle. The wheel axle of the wheel is fixedly connected to the swing rod.

8. A steering bridge structure of a corn harvester capable of reducing the turning radius according to claim 7, characterized in that, It further includes a connecting rod. One end of the connecting rod is hingedly connected to the other end of one of the swing rods. The other end of the connecting rod is hingedly connected to the other end of the other swing rod.

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