Hydraulic steering device of wheat harvester

Abstract

The utility model relates to the technical field of steering devices, in particular to a hydraulic steering device of a wheat harvester, which can reduce the turning radius, is convenient to use, simple in structure and convenient to maintain, and improves the practicability. Comprising a beam, a hydraulic driving assembly, a pushing assembly and a secondary rotating assembly, steering wheels are located at the front and rear ends of the beam, the hydraulic driving assembly is installed in the middle of the right outer wall of the beam, the pushing assembly is installed at the front and rear ends of the right wall of the beam, the hydraulic driving assembly is connected with the pushing assembly, and the secondary rotating assembly is installed on the pushing assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of steering devices, in particular to a hydraulic steering device for a wheat harvester. Background Art

[0002] A wheat harvester is an agricultural machine used to harvest wheat. Existing wheat harvesters are generally rear-wheel driven, with the rear wheels being the driving wheels. During operation, they need to turn when encountering a furrow head. Prior art publication number CN113696966B proposes a hydraulic power steering device, which includes a steering pump and an oil storage tank. A steering shaft connected to a steering knuckle is connected to one side of the steering gear. A steering adjustment member is internally connected to the steering crossbar. Tie rods are connected to both ends of the steering adjustment member, and the steering adjustment member adjusts the movement of the tie rods at both ends under the action of the steering gear hydraulic oil. A circulation pipe is connected to the outside of the steering cross tube, and a pipe assembly is connected to the outside of the circulation pipe. A buffer is connected to the side of the steering cross tube away from the circulation pipe. However, wheat harvesters are used in fields and other ground conditions. The ground is uneven and relatively soft, the steering torque is large, and the steering radius is too large, making it inconvenient to use. In addition, its structure is complex and inconvenient to maintain. If a malfunction occurs during wheat harvesting, it will affect its use. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a hydraulic steering device for a wheat harvester which can reduce the turning radius, is easy to use, has a simple structure, is easy to maintain, and improves practicality.

[0004] The utility model discloses a hydraulic steering device for a wheat harvester, comprising a vehicle beam, a hydraulic drive component, a pushing component and a secondary rotating component, wherein the steering wheel is located at the front and rear ends of the vehicle beam, the hydraulic drive component is installed in the middle of the right outer wall of the vehicle beam, the pushing component is installed at the front and rear ends of the right wall of the vehicle beam, the hydraulic drive component is connected to the pushing component, and the secondary rotating component is installed on the pushing component; the vehicle body is supported by the vehicle beam, the hydraulic drive component drives the pushing component to drive the steering wheel to steer, thereby completing the turning operation, and at the same time the secondary rotating component can further increase the steering angle of the steering wheel, reduce the turning radius, and improve flexibility, the structure is simple, and maintenance is convenient, thereby improving practicality.

[0005] Preferably, the hydraulic drive assembly includes a fixed seat, a cylinder, a piston rod, two sealing covers and two push rods. The fixed seat is fixedly installed in the middle of the right side wall of the vehicle beam, the cylinder is fixedly installed on the fixed seat, sealing covers are installed at the front and rear ends of the cylinder, the piston rod is located inside the cylinder, and the front and rear ends of the piston rod are sealed and slide through the sealing covers. A piston is fixedly installed in the middle of the piston rod, and inlet and outlet oil pipes are provided at the front and rear ends of the top of the cylinder, and the front and rear ends of the piston rod are connected to push rods; the two inlet and outlet oil pipes are connected to the hydraulic pipeline, and after the hydraulic oil enters the cylinder through the two inlet and outlet oil pipes respectively, it pushes the piston to move in the cylinder, which can make the piston rod move forward and backward. The piston rod pushes the two push rods to move, thereby driving the steering wheel to steer. When a fault occurs, the sealing cover at the end of the cylinder is removed, and the piston rod can be pulled out of the cylinder for easy maintenance and replacement.

[0006] Preferably, the pushing assembly includes two bottom bars, two connecting shafts, two sets of rocker arms and two connecting heads. The two bottom bars are fixedly installed at the bottom of the front and rear ends of the vehicle beam, and the connecting shaft is rotatably installed on the top of the bottom bar. Rocker arms are fixedly installed at the upper and lower ends of the connecting shaft. The length of the right end of the rocker arm is greater than that of the left end. The end of the pushing rod away from the piston rod is movably installed with a connecting head. The connecting head is located at the left end of the rocker arm, and the connecting head is rotatably installed between the two rocker arms through a bearing; the piston rod pushes the pushing rod to move, and the pushing rod pushes the rocker arm through the connecting head to drive the connecting shaft to rotate on the bottom bar, thereby pulling the steering wheel to turn and complete the turning action.

[0007] Preferably, the secondary rotation assembly includes two mounting heads, two first hydraulic cylinders and two pulling seats. The mounting head is located at the right end of the rocker arm and is rotatably installed between the two rocker arms. The first hydraulic cylinder is fixedly connected to the mounting head, and the telescopic end of the first hydraulic cylinder is fixedly installed with a pulling seat. When in use, the pulling seat is connected to the steering wheel. When the rocker arm rotates, the steering wheel is pulled to rotate by the first hydraulic cylinder. Starting the first hydraulic cylinder can further increase the steering angle of the steering wheel, reduce the turning radius, and improve flexibility.

[0008] Preferably, it also includes two telescopic rubber sleeves, which are respectively located at the front and rear ends of the cylinder, and the telescopic rubber sleeves are sleeved on the outer walls of the piston rod and the push rod. The telescopic rubber sleeves are installed at the front and rear ends of the cylinder through clamps, and the other end of the telescopic rubber sleeve is connected to the end of the push rod through a clamp; the telescopic rubber sleeves can protect the piston rod and the push rod, reduce the adhesion of dust and impurities, avoid malfunctions, and ensure service life.

[0009] Preferably, a plurality of reinforcing ribs are evenly installed on the outer wall of the beam; the reinforcing ribs can increase the structural strength of the beam and ensure its service life.

[0010] Compared with the existing technology, the beneficial effects of the present invention are: the vehicle body is supported by the vehicle beam, the hydraulic drive component drives the pushing component to drive the steering wheel to turn, and the turning operation is completed. At the same time, the secondary rotating component can further increase the steering angle of the steering wheel, reduce the turning radius, and improve flexibility. The structure is simple, easy to maintain, and practicality is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of the utility model;

[0012] Figure 2 This is an axonometric structural diagram of the present utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the utility model from above;

[0014] Figure 4 It is a front structural schematic diagram of the utility model;

[0015] Figure 5 It is a partial cross-sectional structural schematic diagram of the utility model;

[0016] Markings in the attached figure: 1. Car beam; 2. Fixed seat; 3. Cylinder; 4. Piston rod; 5. Piston; 6. Sealing cover; 7. Push rod; 8. Bottom rod; 9. Connecting shaft; 10. Rocker arm; 11. Connecting head; 12. Mounting head; 13. First hydraulic cylinder; 14. Pulling seat; 15. Reinforcement rib; 16. Telescopic rubber sleeve; 17. Oil inlet and outlet pipes. DETAILED DESCRIPTION

[0017] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0018] like Figures 1 to 5 As shown, a hydraulic steering device for a wheat harvester includes a beam 1, a hydraulic drive assembly, a pushing assembly and a secondary rotating assembly. A plurality of reinforcing ribs 15 are evenly installed on the outer wall of the beam 1. The steering wheel is located at the front and rear ends of the beam 1. The hydraulic drive assembly is installed in the middle of the right outer wall of the beam 1. The pushing assembly is installed at the front and rear ends of the right wall of the beam 1. The hydraulic drive assembly is connected to the pushing assembly, and a secondary rotating assembly is installed on the pushing assembly.

[0019] In this embodiment, the hydraulic drive assembly includes a fixed seat 2, a cylinder 3, a piston rod 4, two sealing covers 6 and two push rods 7. The fixed seat 2 is fixedly installed in the middle of the right side wall of the vehicle beam 1, the cylinder 3 is fixedly installed on the fixed seat 2, and sealing covers 6 are installed at the front and rear ends of the cylinder 3. The piston rod 4 is located inside the cylinder 3, and the front and rear ends of the piston rod 4 are sealed and slide through the sealing covers 6. A piston 5 is fixedly installed in the middle of the piston rod 4, and the piston 5 is sealed and slidably fitted with the cylinder 3. The front and rear ends of the top of the cylinder 3 are provided with inlet and outlet oil pipes 17, and the front and rear ends of the piston rod 4 are connected to the push rods 7.

[0020] The pushing assembly includes two bottom bars 8, two connecting shafts 9, two groups of rocker arms 10 and two connecting heads 11. The two bottom bars 8 are fixedly installed at the bottom of the front and rear ends of the vehicle beam 1. The connecting shaft 9 is rotatably installed on the top of the bottom bar 8. Rocker arms 10 are fixedly installed at the upper and lower ends of the connecting shaft 9. The right end of the rocker arm 10 is longer than the left end. The end of the pushing rod 7 away from the piston rod 4 is movably installed with a connecting head 11. The connecting head 11 is located at the left end of the rocker arm 10, and the connecting head 11 is rotatably installed between the two rocker arms 10 through a bearing. Specifically, the connecting head 11 and the pushing rod 7 can be hinged or rotatably connected. During the movement of the pushing rod 7, the angle between the connecting head 11 and the pushing rod 7 will change, so that the angle between the connecting head 11 and the rocker arm 10 will also change to adapt to the movement of the rocker arm 10.

[0021] The secondary rotating assembly includes two mounting heads 12, two first hydraulic cylinders 13 and two pulling seats 14. The mounting head 12 is located at the right end of the rocker arm 10 and is rotatably installed between the two rocker arms 10. The first hydraulic cylinder 13 is fixedly connected to the mounting head 12, and the pulling seat 14 is fixedly installed at the telescopic end of the first hydraulic cylinder 13.

[0022] This embodiment also includes two telescopic rubber sleeves 16, which are respectively located at the front and rear ends of the cylinder 3, and the telescopic rubber sleeves 16 are sleeved on the outer walls of the piston rod 4 and the push rod 7. The telescopic rubber sleeves 16 are installed at the front and rear ends of the cylinder 3 through clamps, and the other end of the telescopic rubber sleeves 16 is connected to the end of the push rod 7 through a clamp.

[0023] When the trolley is turned on, the trolley 1 is rotated by the second hydraulic cylinder 13, and the trolley 1 is turned on, so that the trolley 1 is turned off.

[0024] The piston 5, sealing cover 6 and telescopic rubber sleeve 16 of the hydraulic steering device of a wheat harvester of the utility model are purchased on the market. Technicians in this industry only need to install and operate them according to the accompanying instruction manual without the need for creative work by technicians in this field.

[0025] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A hydraulic steering device for a wheat harvester, characterized in that: It comprises a vehicle beam (1), a hydraulic drive assembly, a pushing assembly and a secondary rotating assembly, wherein the steering wheels are located at the front and rear ends of the vehicle beam, the hydraulic drive assembly is installed at the middle of the right outer wall of the vehicle beam (1), the pushing assembly is installed at the front and rear ends of the right wall of the vehicle beam (1), the hydraulic drive assembly is connected to the pushing assembly, and the secondary rotating assembly is installed on the pushing assembly; The hydraulic drive assembly includes a fixed seat (2), a cylinder (3), a piston rod (4), two sealing covers (6) and two push rods (7). The fixed seat (2) is fixedly installed in the middle of the right side wall of the vehicle beam (1). The cylinder (3) is fixedly installed on the fixed seat (2). The front and rear ends of the cylinder (3) are equipped with sealing covers (6). The piston rod (4) is located inside the cylinder (3). The front and rear ends of the piston rod (4) are sealed and slide through the sealing covers (6). A piston (5) is fixedly installed in the middle of the piston rod (4). The front and rear ends of the top of the cylinder (3) are provided with inlet and outlet oil pipes (17). The front and rear ends of the piston rod (4) are connected to the push rods (7).

2. A hydraulic steering device for a wheat harvester according to claim 1, characterized in that: The pushing assembly comprises two bottom bars (8), two connecting shafts (9), two sets of rocker arms (10) and two connecting heads (11), wherein the two bottom bars (8) are fixedly mounted on the bottoms of the front and rear ends of the vehicle beam (1), the connecting shaft (9) is rotatably mounted on the top of the bottom bars (8), the rocker arms (10) are fixedly mounted on the upper and lower ends of the connecting shaft (9), the right end of the rocker arm (10) is longer than the left end, the end of the pushing rod (7) away from the piston rod (4) is movably mounted with a connecting head (11), the connecting head (11) is located at the left end of the rocker arm (10), and the connecting head (11) is rotatably mounted between the two rocker arms (10) through a bearing.

3. A hydraulic steering device for a wheat harvester according to claim 2, characterized in that: The secondary rotating assembly comprises two mounting heads (12), two first hydraulic cylinders (13) and two pulling seats (14); the mounting head (12) is located at the right end of the rocker arm (10) and is rotatably mounted between the two rocker arms (10); the mounting head (12) is fixedly connected to the first hydraulic cylinder (13); and the pulling seat (14) is fixedly mounted on the telescopic end of the first hydraulic cylinder (13).

4. A hydraulic steering device for a wheat harvester according to claim 2, characterized in that: The invention also includes two telescopic rubber sleeves (16), which are respectively located at the front and rear ends of the cylinder (3), and the telescopic rubber sleeves (16) are sleeved on the outer walls of the piston rod (4) and the push rod (7). The telescopic rubber sleeves (16) are installed at the front and rear ends of the cylinder (3) through a clamp, and the other end of the telescopic rubber sleeve (16) is connected to the end of the push rod (7) through a clamp.

5. The hydraulic steering device for a wheat harvester according to claim 1, characterized in that: A plurality of reinforcing ribs (15) are evenly mounted on the outer wall of the vehicle beam (1).

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