Electric control steering control system of steering wheel type mower

Abstract

The utility model relates to the field of mowers, and discloses an electric control steering control system of a steering wheel type mowing machine, which comprises two hydraulic bridges, the two hydraulic bridges are respectively fixed on the bottom surface of a rack assembly, and the two hydraulic bridges are respectively and rotatably provided with a rear wheel assembly. Electric push rods are fixed to the left side and the right side of the inner wall of the rack assembly respectively, a control panel is fixed to the rack assembly, an electronic accelerator pedal is detachably arranged on the top face of the rack assembly and electrically connected with the control panel, a steering gear assembly is rotatably arranged on the top face of the rack assembly, and the control panel is electrically connected with the steering gear assembly. A steering pinion is fixed to the bottom face of the steering gear assembly, and angle sensors are fixed to the top end of the fluted disc body and the interior of the electronic accelerator pedal respectively. According to the control system, steering of the mower can be controlled, zero turning of the mower is achieved, the control system can control accurately and efficiently, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of lawn mowers, in particular to an electric steering control system of a steering wheel type lawn mower. Background Art

[0002] A lawn mower, also known as a weed cutter, lawn mower, lawn trimmer, etc., is a mechanical tool used to trim lawns, vegetation, etc. It consists of a cutter disc, an engine, a running wheel, a running mechanism, a blade, an armrest, and a control part. At present, lawn mowers are generally divided into joystick-type zero-turn lawn mowers (double hydraulic bridges), steering wheel-type non-zero-turn lawn mowers (single hydraulic bridges), and steering wheel-type zero-turn lawn mowers (double hydraulic bridges, mechanically controlled steering). Through the steering control system, the operator can easily and accurately control the direction of the lawn mower to adapt to different terrains and work requirements.

[0003] According to the Chinese patent with publication number: CN219305375U, a lawn mower steering structure relates to the technical field of garden machinery, including a bracket and a connecting rod, a wheel axle is rotatably connected inside the bracket, a wheel is installed at one end of the wheel axle, a steering shaft is rotatably connected inside the bracket, and a transmission mechanism is arranged between the steering shaft and the wheel axle; the transmission mechanism includes a first fixed rod and a connecting rod.

[0004] In the above scheme, the steering of the lawn mower is adjusted by the first fixed rod, the second fixed rod, the connecting rod, the steering shaft, the connecting rod, and the mounting shaft, resulting in the following disadvantages: when the lawn mower is in use, the turning radius is too large, resulting in the lawn mower being unable to make a zero turn, making it inconvenient to turn the lawn mower. Utility Model Content

[0005] The utility model aims to provide an electronic steering control system for a steering wheel type lawn mower, so as to solve the problem that the lawn mower cannot make a zero turn due to a large turning radius when in use, making the steering of the lawn mower inconvenient.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical solutions: an electronic steering control system for a steering wheel type lawn mower, comprising two hydraulic bridges, the two hydraulic bridges are respectively fixed on the bottom surface of a frame assembly, the two hydraulic bridges are respectively rotatably provided with rear wheel assemblies, electric push rods are respectively fixed on the left and right sides of the inner wall of the frame assembly, a control panel is fixed on the frame assembly, the control panel is electrically connected to the electric push rods, an electronic throttle pedal is detachably provided on the top surface of the frame assembly, the electronic throttle pedal is electrically connected to the control panel, a steering machine assembly is rotatably provided on the top surface of the frame assembly, a steering pinion is fixed on the bottom surface of the steering machine assembly, a toothed disc body is rotatably provided on the bottom surface of the frame assembly, and the toothed disc body The body is meshed with the steering pinion, two long steering tie rods are rotatably provided on the top of the toothed disc body, and the front ends of the two long steering tie rods are rotatably provided with steering relays, and the two steering relays are rotatably arranged on the frame assembly, and the swing arms of the two steering relays are rotatably provided with short steering tie rods, and one end of the two short steering tie rods is rotatably provided with transition toothed discs, and the two transition toothed discs are rotatably arranged on the frame assembly, and the bottom surface of the frame assembly is rotatably provided with two front wheel assemblies, and the inner sides of the two front wheel assemblies are respectively provided with large steering gears, and the two large steering gears are respectively meshed with two transition toothed discs, and angle sensors are fixed to the top of the toothed disc body and the inside of the electronic throttle pedal.

[0007] Preferably, relay swing arms are fixed on the left and right sides of the inner wall of the frame assembly, and the swing arms at the lower ends of the two relay swing arms are fixedly connected to one end of the two electric push rod telescopic rods, and hydraulic pull rods are fixed on the upper ends of the two relay swing arms, and one end of the two hydraulic pull rod telescopic rods are fixedly connected to the swing arms of the two hydraulic bridges.

[0008] Preferably, a rubber sleeve is fixed to the outer wall of the steering wheel of the steering gear assembly, and the outer wall of the rubber sleeve is provided with anti-slip grooves.

[0009] Preferably, two bolts are provided on the top surface of the frame assembly, and the frame assembly is connected to the electronic throttle pedal via the two bolts.

[0010] Preferably, a lighting lamp is fixed to the front side of the outer wall of the steering gear assembly.

[0011] Preferably, the rotation angle range of the electronic accelerator pedal is 0-17.5°.

[0012] Compared with the prior art, the electronic steering control system of a steering wheel type lawn mower using the above technical solution has the following beneficial effects:

[0013] 1. During use, it is helpful to control the walking speed of the lawn mower, and it is helpful to control the speed of the left and right wheels when the lawn mower turns. It is helpful to control the steering of the lawn mower, realize zero turning of the lawn mower, and make the control system accurate, efficient, and simple in structure;

[0014] 2. During use, the rubber sleeve and anti-skid pattern provide a more secure grip to prevent the hand from slipping during operation, which helps increase the control of the lawn mower by the operator. The bolts make it easier for the operator to disassemble and assemble the electronic throttle pedal, making it easier for the operator to maintain and replace the electronic throttle pedal.

[0015] 3. During use, the lighting can help improve visibility in low-light conditions, so that workers can clearly see the dry work area. By setting the rotation angle range of the electronic accelerator pedal to 0-17.5°, the angle of the electronic accelerator pedal changes from 0-17.5°, and outputs an electrical signal to the control panel according to the angle change. After receiving the signal, the control panel outputs an electrical signal to the left and right electric push rods. The left and right electric push rods change their lengths according to the electrical signal (at this time, the left and right electric push rods change synchronously), thereby controlling the angle change of the hydraulic bridge swing arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a side cross-sectional view of an embodiment.

[0017] Figure 2 A top view of the embodiment.

[0018] Figure 3 Schematic diagram of the lawn mower in the embodiment when turning left at zero turn state.

[0019] Figure 4 Schematic diagram of the lawn mower turning left in the embodiment.

[0020] In the figure: 1. Hydraulic bridge; 2. Frame assembly; 3. Rear wheel assembly; 4. Electric push rod; 5. Control panel; 6. Electronic accelerator pedal; 7. Steering gear assembly; 8. Steering pinion; 9. Sprocket body; 10. Steering long tie rod; 11. Steering relay; 12. Steering short tie rod; 13. Transition sprocket; 14. Front wheel assembly; 15. Steering large gear; 16. Angle sensor; 17. Relay swing arm; 18. Hydraulic tie rod; 19. Rubber sleeve; 20. Anti-skid pattern; 21. Bolt; 22. Lighting lamp. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0022] like Figure 1-Figure 4As shown, an electronic steering control system for a steering wheel type lawn mower comprises two hydraulic bridges 1, the two hydraulic bridges 1 are respectively fixed on the bottom surface of a frame assembly 2, rear wheel assemblies 3 are respectively rotatably provided on the two hydraulic bridges 1, electric push rods 4 are respectively fixed on the left and right sides of the inner wall of the frame assembly 2, a control panel 5 is fixed on the frame assembly 2, the control panel 5 is electrically connected to the electric push rod 4, an electronic accelerator pedal 6 is detachably provided on the top surface of the frame assembly 2, the electronic accelerator pedal 6 is electrically connected to the control panel 5, a steering machine assembly 7 is rotatably provided on the top surface of the frame assembly 2, a steering pinion 8 is fixed on the bottom surface of the steering machine assembly 7, a toothed disc body 9 is rotatably provided on the bottom surface of the frame assembly 2, the toothed disc body 9 is meshed with the steering pinion 8, two steering long tie rods 10 are rotatably provided on the top end of the two steering long tie rods 10, steering relays 11 are respectively rotatably provided at the front ends of the two steering long tie rods 10, and the two steering relays 11 are respectively rotatable The frame assembly 2 is arranged on the frame assembly 2, the two steering relays 11 are rotatably provided with steering short tie rods 12 on the swing arms, and the transition toothed discs 13 are rotatably provided at one end of the two steering short tie rods 12. The two transition toothed discs 13 are rotatably arranged on the frame assembly 2, and the bottom surface of the frame assembly 2 is rotatably provided with two front wheel assemblies 14, and the inner sides of the two front wheel assemblies 14 are respectively provided with steering gearwheels 15, and the two steering gearwheels 15 are respectively meshed with the two transition toothed discs 13. Angle sensors 16 are respectively fixed to the top of the toothed disc body 9 and the inside of the electronic throttle pedal 6. Relay swing arms 17 are respectively fixed to the left and right sides of the inner wall of the frame assembly 2, and the swing arms at the lower ends of the two relay swing arms 17 are respectively fixedly connected to one end of the telescopic rods of the two electric push rods 4, and hydraulic pull rods 18 are respectively fixed to the upper end swing arms of the two relay swing arms 17, and one end of the telescopic rods of the two hydraulic pull rods 18 are respectively fixedly connected to the swing arms of the two hydraulic bridges 1.

[0023] During use, by stepping on the electronic accelerator pedal 6 (the electronic accelerator pedal 6 contains an angle sensor 16), the electronic accelerator pedal 6 outputs a signal to the control board 5 according to the different stepping angles. The control board 5 processes and calculates the signal, and then outputs the signal to the left and right electric push rods 4. The left and right electric push rods 4 realize the telescopic length change according to the received electrical signal data (at this time, the two electric push rods 4 are telescoped synchronously), thereby controlling the angle change of the left and right hydraulic bridge 1 swing arms (the swing arm rotation angles are different, and the hydraulic flow rates are different), so as to control the walking speed of the lawn mower. By rotating the steering wheel of the frame assembly 2, the steering pinion 8 at the lower end of the steering wheel drives the sprocket body 9 to rotate. The sprocket body 9 is used through two sets of connecting rod mechanisms to realize the steering of the front wheel assembly 14. An angle sensor 16 is installed on the sprocket body 9. According to different rotation angles, the angle sensor 16 will output different signals to the control board 5. The control board 5 processes and calculates the signals, and then outputs the signals to the left and right electric push rods 4. The left and right electric push rods 4 realize the change of telescopic length according to the received electrical signal data, thereby controlling the angle change of the left and right hydraulic bridge 1 swing arms (the swing arm rotation angles are different, and the hydraulic flow rates are different), so as to control the speed of the left and right wheels when the lawn mower turns, which is beneficial to control the steering of the lawn mower, realize zero turning of the lawn mower, and make the control system accurate and efficient with simple structure.

[0024] like Figure 1 As shown, a rubber sleeve 19 is fixed to the outer wall of the steering wheel of the steering gear assembly 7 , and an anti-slip pattern 20 is provided on the outer wall of the rubber sleeve 19 .

[0025] During use, the rubber sleeve 19 and the anti-skid pattern 20 provide a more secure grip, prevent the hand from slipping during operation, and help increase the controllability of the lawn mower by the operator.

[0026] like Figure 1-Figure 4 As shown, two bolts 21 are provided on the top surface of the frame assembly 2 , and the frame assembly 2 is connected to the electronic throttle pedal 6 via the two bolts 21 .

[0027] During use, the bolts 21 facilitate the staff to disassemble and assemble the electronic accelerator pedal 6 , thereby facilitating the staff to maintain and replace the electronic accelerator pedal 6 .

[0028] like Figure 1 and Figure 2 As shown, a lighting lamp 22 is fixed to the front side of the outer wall of the steering gear assembly 7, and the rotation angle range of the electronic accelerator pedal 6 is 0-17.5°.

[0029] During use, the lighting lamp 22 is used to improve visibility in low light conditions, so that the staff can clearly see the dry working area. By setting the rotation angle range of the electronic accelerator pedal 6 to 0-17.5°, the angle of the electronic accelerator pedal 6 changes from 0-17.5°, and an electrical signal is output to the control board 5 according to the angle change. After receiving the signal, the control board 5 outputs the electrical signal to the left and right electric push rods 4. The left and right electric push rods 4 change their lengths according to the electrical signal (at this time, the left and right electric push rods 4 change synchronously), thereby controlling the angle change of the swing arm of the hydraulic bridge 1.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electronic steering control system for a steering wheel type lawn mower, comprising two hydraulic bridges (1), wherein the two hydraulic bridges (1) are respectively fixed to the bottom surface of a frame assembly (2), and characterized in that: The two hydraulic bridges (1) are rotatably provided with rear wheel assemblies (3), the inner wall left and right sides of the frame assembly (2) are respectively fixed with electric push rods (4), the frame assembly (2) is fixed with a control panel (5), the control panel (5) is electrically connected to the electric push rod (4), the top surface of the frame assembly (2) is detachably provided with an electronic accelerator pedal (6), the electronic accelerator pedal (6) is electrically connected to the control panel (5), the top surface of the frame assembly (2) is rotatably provided with a steering gear assembly (7), the bottom surface of the steering gear assembly (7) is fixed with a steering pinion (8), the bottom surface of the frame assembly (2) is rotatably provided with a toothed disc body (9), the toothed disc body (9) is meshed with the steering pinion (8), the top of the toothed disc body (9) is rotatably provided with two long steering tie rods (10), the two steering gears are arranged on the top of the toothed disc body (9), and the two steering gears are arranged on the top of the toothed disc body (9). A steering relay (11) is rotatably provided at the front end of the long pull rod (10), and the two steering relays (11) are rotatably provided on the frame assembly (2). A steering short pull rod (12) is rotatably provided on the swing arms of the two steering relays (11), and a transition sprocket (13) is rotatably provided at one end of the two steering short pull rods (12). The two transition sprockets (13) are rotatably provided on the frame assembly (2). Two front wheel assemblies (14) are rotatably provided on the bottom surface of the frame assembly (2), and steering gear wheels (15) are provided on the inner sides of the two front wheel assemblies (14). The two steering gear wheels (15) are meshed with the two transition sprockets (13) respectively. Angle sensors (16) are fixed to the top of the sprocket body (9) and the inside of the electronic throttle pedal (6).

2. The electronic steering control system of a steering wheel type lawn mower according to claim 1, characterized in that: Relay swing arms (17) are fixed on the left and right sides of the inner wall of the frame assembly (2), and the swing arms at the lower ends of the two relay swing arms (17) are fixedly connected to one end of the telescopic rods of the two electric push rods (4), and hydraulic pull rods (18) are fixed on the upper ends of the two relay swing arms (17), and one end of the telescopic rods of the two hydraulic pull rods (18) are fixedly connected to the swing arms of the two hydraulic bridges (1).

3. The electronic steering control system of a steering wheel type lawn mower according to claim 2, characterized in that: A rubber sleeve (19) is fixed to the outer wall of the steering wheel of the steering gear assembly (7), and the outer wall of the rubber sleeve (19) is provided with anti-slip grooves (20).

4. The electronic steering control system of a steering wheel type lawn mower according to claim 3, characterized in that: Two bolts (21) are provided on the top surface of the frame assembly (2), and the frame assembly (2) and the electronic throttle pedal (6) are connected via the two bolts (21).

5. The electronic steering control system of a steering wheel type lawn mower according to claim 1, characterized in that: A lighting lamp (22) is fixed on the front side of the outer wall of the steering gear assembly (7).

6. The electronic steering control system of a steering wheel type lawn mower according to claim 1, characterized in that: The rotation angle range of the electronic accelerator pedal (6) is 0-17.5°.

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