A mower-reverse deck stop mechanism

Abstract

The utility model relates to a lawn tractor reverse mowing deck stop knife mechanism, including advancing footrest mechanism, retreating footrest mechanism, hydraulic bridge, pull rod, swing bar, support, fixed bolster, pin shaft, torsional spring, bolt and micro switch. Advancing and retreating footrest mechanism are connected with hydraulic bridge respectively, are used for controlling hydraulic pump, realize that the tractor advances or retreats. Pull rod is connected with swing bar and hydraulic bridge, and hydraulic bridge drives pull rod movement, drives swing bar rotation. Torsional spring is fixed on the support through pin shaft, provides reset torsional force for swing bar. Micro switch is installed on swing bar and is connected to power supply. When retreating footrest mechanism is trodden down, hydraulic bridge drives pull rod and swing bar movement, and swing bar contacts with fixed bolster. When swing bar reaches the preset angle, micro switch is closed, cuts off power supply, and stops the cutter. The mechanism can effectively avoid the cutter to continue operation when reversing, and improves the security of lawn tractor operation.

Description

Technical Field

[0001] This utility model relates to a lawn tractor reversing mower stop mechanism. Background Technology

[0002] A lawn tractor is a type of plant protection machinery used for mowing large areas of lawn. It is typically equipped with a hydraulic axle control system to enable forward and reverse movement. When the operator turns on the cutter switch, the cutter starts and begins mowing; turning off the switch stops the cutter.

[0003] However, the continued operation of the mower blades while the lawn tractor is reversing poses a safety hazard and could lead to accidents. Therefore, industry regulations typically prohibit mowing during the reversing process. However, in practice, users may instinctively forget to turn off the mower switch, resulting in the tractor continuing to mow while reversing. Therefore, designing a mechanism that automatically stops the mower blades during reversing is a key requirement for improving the safety of lawn tractors. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a lawn tractor reversing mower stop mechanism.

[0005] A lawn tractor reversing cutter stop mechanism includes: a forward foot pedal mechanism, a reverse foot pedal mechanism, a hydraulic bridge, a tie rod, a swing rod, a bracket, a fixed bracket, a pin, a torsion spring, a latch, and a micro switch. The forward and reverse foot pedals are connected to the hydraulic axle to control the hydraulic pump inside the axle, enabling the tractor to move forward or backward. The pull rod is connected at both ends to the rocker arm and the hydraulic axle, respectively, and moves under the drive of the hydraulic axle. The rocker arm is fixedly connected to a pin, which is rotatably connected to the bracket, causing the rocker arm to rotate when the pull rod moves. Torsion springs are mounted on the pin and respectively engaged in limiting holes on the bracket and rocker arm to provide torque and keep the rocker arm in its reset position. A micro switch is mounted on the rocker arm and connected to the power supply. The fixed bracket is mounted on the frame beam and has adjustable mounting holes. When the reverse foot pedal is depressed, the hydraulic axle drives the pull rod to move, causing the rocker arm to rotate and contact the fixed bracket. When the rocker arm reaches a preset angle, the micro switch contacts close, cutting off the power and stopping the cutter's rotation.

[0006] In one possible implementation, the hydraulic bridge includes a hydraulic cylinder and a control valve, the control valve being used to control the extension and retraction of the hydraulic cylinder to drive the movement of the tie rod.

[0007] In one possible implementation, the tie rod is a telescopic structure and is connected to the rocker arm and hydraulic bridge via a ball joint.

[0008] In one possible implementation, the lever is made of high-strength alloy steel to improve durability and fatigue resistance.

[0009] In one possible implementation, the torque of the torsion spring is adjustable to suit the needs of different working environments.

[0010] In one possible implementation, the microswitch is waterproof and dustproof to improve its service life in harsh environments.

[0011] In one possible implementation, the mounting hole of the fixed bracket is an oblong hole to facilitate adjustment of the contact angle between the swing arm and the fixed bracket.

[0012] In one possible implementation, the pin has a quick-release design to facilitate maintenance and replacement.

[0013] In one possible implementation, the pin is provided with a lubricating oil groove to reduce friction during the rotation of the rocker arm and improve its service life.

[0014] Beneficial Effects: Compared with existing technologies, this invention, by incorporating a swing arm, a pull rod, and a micro switch, automatically cuts off the power to the cutter when the tractor reverses, ensuring operational safety. This mechanism utilizes the displacement transmission of the pull rod to rotate the swing arm and trigger the micro switch when the tractor reverses, avoiding the safety hazards caused by continuous operation of the cutter during reversal. Furthermore, the adjustable fixed bracket and pull rod structure improve the applicability and adjustability of the mechanism, allowing it to be adapted to different models of lawn tractors, thus enhancing the equipment's versatility and safety. Attached Figure Description

[0015] Figure 1 This is a top view of a lawn tractor's reverse mower stop mechanism;

[0016] Figure 2 This is a front view of a lawn tractor's reverse mower stop mechanism;

[0017] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is an assembly diagram of the rocker arm, torsion spring, bracket, and micro switch.

[0019] In the diagram, 1. Forward foot pedal mechanism, 2. Reverse foot pedal mechanism, 3. Pull rod, 4. Hydraulic bridge, 5. Rocker arm, 6. Bracket, 7. Fixed bracket, 8. Pin, 9. Torsion spring, 10. Pin, 11. Micro switch Detailed Implementation

[0020] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0021] A lawn tractor reversing cutter stop mechanism includes: a forward foot pedal mechanism 1, a reverse foot pedal mechanism 2, a hydraulic bridge 4, a tie rod 3, a swing arm 5, a bracket 6, a fixed bracket 7, a pin 8, a torsion spring 9, a latch 10, and a micro switch 11. The forward foot pedal mechanism 1 and the reverse foot pedal mechanism 2 are respectively connected to the hydraulic bridge 4 and are used to control the hydraulic pump inside the hydraulic bridge 4, causing the tractor to move forward or backward. The tie rod 3 is connected at both ends to the swing arm 5 and the hydraulic bridge 4, respectively, and is driven by the hydraulic bridge 4 to move. The swing arm 5 is fixedly connected to the pin 8, and the pin 8 is rotatably connected to the bracket 6. When the pull rod 3 moves, it drives the swing arm 5 to rotate; the torsion spring 9 is set on the pin 8 and is respectively locked in the limiting holes on the bracket 6 and the swing arm 5 to provide torque and keep the swing arm 5 in place; the micro switch 11 is installed on the swing arm 5 and connected to the power supply; the fixed bracket 7 is installed on the frame beam and has an adjustable mounting hole; when the back pedal mechanism 2 is stepped on, the hydraulic bridge 4 drives the pull rod 3 to move and drives the swing arm 5 to rotate, so that the swing arm 5 contacts the fixed bracket 7; when the swing arm 5 reaches the preset angle, the contacts of the micro switch 11 close, cut off the power supply, and stop the cutter from rotating.

[0022] Working principle:

[0023] The mechanism controls the movement of the hydraulic bridge 4 via the reverse foot pedal 2, causing the pull rod 3 to move and drive the swing arm 5 to rotate. When the swing arm 5 rotates to a certain angle, the micro switch 11 contacts close, cutting off the power to the cutter and preventing the tractor from continuing to cut grass during reversing, thus improving safety and ease of operation. The torsion spring 9 is used to automatically reset the swing arm 5 after the reverse foot pedal 2 is released, ensuring that the system can return to its initial state.

[0024] Furthermore, the rocker arm 5, made of high-strength alloy steel, enhances durability, and the torsion spring 9 features adjustable torque, allowing it to adapt to various working environments. Additionally, the microswitch 11 is waterproof and dustproof, improving its lifespan in harsh environments. The mounting bracket 7 employs an elongated, slotted hole design, facilitating adjustment of the contact angle between the rocker arm 5 and the mounting bracket 7.

[0025] The hydraulic axle 4 can use different models of hydraulic cylinders and control valves to adapt to different specifications of tractors.

[0026] The tie rod 3 can be designed as a telescopic structure and connected to the rocker arm 5 and the hydraulic bridge 4 via a ball joint to increase structural adaptability.

[0027] Different specifications of torsion springs 9 are used to adapt to various working conditions, and an adjustment mechanism can be added to precisely adjust the torque.

[0028] Using pins 8 made of different materials, or adding lubricating oil grooves to pins 8, can reduce friction and improve system life.

[0029] The pin 10 can adopt a quick-release structure, which facilitates maintenance and replacement and improves the convenience of repair.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lawn tractor rear discharge header stop mechanism comprising: Forward foot pedal mechanism (1), backward foot pedal mechanism (2), hydraulic bridge (4), pull rod (3), swing rod (5), bracket (6), fixed bracket (7), pin (8), torsion spring (9), pin (10) and micro switch (11); The forward foot pedal mechanism (1) and the backward foot pedal mechanism (2) are respectively connected to the hydraulic bridge (4) and are used to control the hydraulic pump inside the hydraulic bridge (4) to make the tractor move forward or backward. The two ends of the pull rod (3) are connected to the swing rod (5) and the hydraulic bridge (4) respectively, and the pull rod (3) is driven by the hydraulic bridge (4); The swing arm (5) is fixedly connected to the pin (8), and the pin (8) is rotatably connected to the bracket (6), so that the swing arm (5) rotates when the pull rod (3) moves; The torsion spring (9) is mounted on the pin (8) and is respectively locked in the limiting holes on the bracket (6) and the swing rod (5) to provide torque and keep the swing rod (5) reset. The micro switch (11) is mounted on the lever (5) and connected to the power supply; The fixed bracket (7) is installed on the frame beam and has adjustable mounting holes; When the backward foot pedal mechanism (2) is stepped down, the hydraulic bridge (4) drives the pull rod (3) to move and drives the swing rod (5) to rotate, so that the swing rod (5) contacts the fixed bracket (7); When the swing arm (5) reaches the preset angle, the contacts of the micro switch (11) close, cutting off the power supply and stopping the cutter from rotating.

2. The lawn tractor reversing mower stop mechanism according to claim 1, characterized in that, The hydraulic bridge (4) includes a hydraulic cylinder and a control valve, which controls the extension and retraction of the hydraulic cylinder to drive the pull rod (3) to move.

3. The lawn tractor reversing mower stop mechanism according to claim 2, characterized in that, The pull rod (3) is a telescopic structure and is connected to the swing rod (5) and the hydraulic bridge (4) via a ball joint.

4. The lawn tractor reversing mower stop mechanism according to claim 1, characterized in that, The swing arm (5) is made of high-strength alloy steel.

5. The lawn tractor reversing mower stop mechanism according to claim 1, characterized in that, The torque of the torsion spring (9) is adjustable.

6. The lawn tractor reversing mower stop mechanism according to claim 1, characterized in that, The micro switch (11) is waterproof and dustproof.

7. The lawn tractor reversing mower stop mechanism according to claim 1, characterized in that, The mounting hole of the fixed bracket (7) is an elongated hole to facilitate the adjustment of the contact angle between the swing rod (5) and the fixed bracket (7).

8. The lawn tractor reversing mower stop mechanism according to claim 1, characterized in that, The pin (10) adopts a quick-release structure.

9. The lawn tractor reversing mower stop mechanism according to claim 1, characterized in that, The pin (8) is provided with a lubricating oil groove.

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