Four-wheel riding type mini-tiller equipment

Abstract

The utility model relates to the technical field of agricultural equipment, and discloses four-wheel riding type mini-tiller equipment which is driven by single power or hybrid power. Comprising a front gearbox, a rear gearbox, a front axle, a rear axle, a steering wheel, a steering assembly, a hand brake assembly, a clutch brake linkage structure, vehicle lamps and seats, wherein the vehicle lamps and the seats are symmetrically arranged on the two sides of the front portion of the four-wheel riding type miniature tillage equipment respectively. The power output of the front gearbox drives a front axle, the power output of the rear gearbox drives a rear axle, the front axle or the rear axle is detachably provided with a tillage implement or a walking wheel, and the front gearbox and the rear gearbox can be switched to a multi-gear four-wheel-drive walking mode, a plurality of four-wheel-drive tillage modes or a multi-gear two-wheel-drive walking mode in a matched mode. The rotary cultivator can meet different cultivation requirements, and is convenient to operate and use.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural equipment, in particular to a four-wheel ride-on micro-tillage machine. Background Art

[0002] A four-wheeled mini-tillage machine is a small-sized tillage machine mainly used for agricultural operations. The powertrain of existing four-wheeled mini-tillage machines is generally a fuel-powered engine, including a front gearbox and a rear gearbox. The front gearbox is used to control the speed of the traveling wheels or tillage implements on the front axle, and the rear gearbox is used to control the speed of the traveling wheels or tillage implements on the rear axle. The driver sits on the seat, starts the engine, turns the steering wheel, steps on the clutch to shift gears, and releases the foot brake to drive the four-wheeled mini-tillage machine for tillage.

[0003] The current rear transmission can generally only switch between two gears. Due to the different slopes and areas of cultivated land in different farming areas and different farming requirements, using only the existing powertrain and rear transmission is prone to problems such as insufficient power, insufficient endurance, and a small scope of application. There is an urgent need for a four-wheeled riding micro-tillage machine that can meet different farming needs and is easy to operate and use. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a four-wheeled ride-on micro-tillage machine that can meet different farming needs and is easy to operate and use.

[0005] The technical solution adopted by the utility model is as follows: a four-wheeled riding micro-tillage device, which adopts a single power drive or a hybrid power drive, comprises a front gearbox, a rear gearbox, a front axle, a rear axle, a steering wheel, a steering assembly, a handbrake assembly, a clutch-brake linkage structure, and lights and seats symmetrically arranged on both sides of the front of the four-wheeled riding micro-tillage device;

[0006] The power output of the front gearbox drives the front axle, and the power output of the rear gearbox drives the rear axle. The front axle or the rear axle can be detachably mounted with tillage implements or travel wheels. The front gearbox and the rear gearbox can be coordinated to switch to a multi-speed four-wheel drive travel mode, a variety of four-wheel drive tillage modes, or a multi-speed two-wheel drive travel mode.

[0007] The steering wheel is used to control the steering of the four-wheel ride-on micro-tiller and reserves operating space for the throttle switch and control buttons;

[0008] The steering assembly is used to drive the four-wheel riding micro-tillage machine to steer;

[0009] The handbrake assembly is used to control the brakes of the four-wheel riding micro-tillage machine;

[0010] The clutch-brake linkage structure is used to control the linkage of the brake and the clutch. When braking, the clutch is automatically disconnected, and when the clutch is engaged, the brake is automatically released.

[0011] When the headlight is on, it is used for front lighting; when the headlight is flashing, it is used for indicating the direction of travel;

[0012] The seat is used for the driver to sit on and is arranged on the rear frame.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The hybrid drive has a high output power, which is beneficial for climbing, accelerating and tilling hard soil. The total number of gears in the rear gearbox has been increased to meet various tillage needs. The steering wheel not only ensures steering, but also reserves operating space for the throttle switch and control buttons to facilitate driver operation. The clutch-brake linkage structure can effectively avoid the simultaneous use of brakes and clutches, prevent wear on related components, and extend the service life of related components. The headlights can provide lighting and steering instructions for the four-wheel riding micro-tiller equipment, making it easy to use.

[0015] As a preferred embodiment of the present invention, an internal combustion engine and / or electric drive is adopted, including an internal combustion engine, a motor, a battery assembly and a front gearbox. The battery assembly supplies power to the motor, and the power generated by the motor is transmitted to the front gearbox. The internal combustion engine transmits power to the front gearbox. When the battery assembly needs to be charged, it can simultaneously drive the rotor of the magnetic motor to rotate around the stator to generate current to charge the battery.

[0016] In this solution, when the internal combustion engine is working, its output shaft rotates, driving the motor and gearbox at the same time. The output shaft drives the rotor in the motor to rotate, cutting the stator coil, thereby generating an induced electromotive force (induced voltage) in the stator coil, and finally outputs electrical energy through an external circuit to charge the battery assembly. The electricity in the battery assembly can be used for electrical drive.

[0017] Beneficial effects: When driven by a combination of an internal combustion engine and a battery, the output power is higher, which is beneficial for climbing, accelerating and plowing hard soil. Compared with a single internal combustion engine drive, the combination of an internal combustion engine and a battery has a longer driving time. When driven by the internal combustion engine, the motor acts as a generator to generate electricity, and kinetic energy is recovered through the battery assembly, thereby improving energy utilization.

[0018] As a preferred embodiment of the present invention, the rear gearbox includes a first transmission shaft, a second transmission shaft and a primary speed change mechanism, and a third transmission shaft and a secondary speed change mechanism. The primary speed change mechanism can switch between multiple primary gears to change the transmission ratio between the first transmission shaft and the second transmission shaft. The secondary speed change mechanism can switch between multiple secondary gears to change the transmission ratio between the second transmission shaft and the third transmission shaft.

[0019] In this solution, power is transmitted from the front gearbox to the rear gearbox. In the rear gearbox, power is transmitted to the rear travel wheels or tillage implements through the first transmission shaft, the second transmission shaft, and the third transmission shaft in sequence. The transmission ratio between the first transmission shaft and the second transmission shaft is changed through the first-stage transmission mechanism, and the transmission ratio between the second transmission shaft and the third transmission shaft is changed through the second-stage transmission mechanism, so that the total number of gears in the rear gearbox is equal to the number of first-stage gears multiplied by the number of second-stage gears.

[0020] Beneficial effect: By setting the first-stage speed change mechanism and the second-stage speed change mechanism, the total number of gears in the rear gearbox is increased, which can be applied to various farming needs.

[0021] As a preferred embodiment of the present invention, the steering wheel includes an annular circular tube, a plurality of circumferentially spaced inclined and inwardly bent support rods, one end of each of the support rods is connected to the circular tube, and the inwardly bent support rods cooperate with the circular tube to reserve operating space for components on the four-wheel ride-on micro-tiller.

[0022] Beneficial effects: Multiple support rods are bent inward, so that the distance between the support rods and the orthographic projection of the circular tube is increased, thereby reserving sufficient operating space for the throttle switch and the control button, and the existing multiple support rods are all tilted. If you want to reserve operating space for the throttle switch and the control button, you need to move the steering wheel upward along the axis of the first steering member, or increase the diameter of the circular tube, both of which will affect the driver's operating comfort. While ensuring that the distance between the steering wheel and the seat at the driving position of the four-wheel ride-on micro-tillage machine remains unchanged, it is convenient for the driver to operate the steering wheel.

[0023] As a preferred embodiment of the present invention, the steering assembly includes a first steering member connected to the ends of multiple support rods and a second steering member engaged with the first steering member. When the first steering member rotates circumferentially in the horizontal plane, the first steering member drives the second steering member to rotate circumferentially in the vertical plane. The second steering member is fan-shaped, and the second steering member drives the four-wheel riding micro-tiller to steer.

[0024] Beneficial effects: The cooperation between the first steering member and the fan-shaped second steering member can stably transmit power, reduce costs, reduce the width of the steering component under the steering wheel, save installation space, and prevent the driver from fatigue after long-term operation.

[0025] As a preferred embodiment of the present invention, the handbrake assembly includes a foot brake pedal and a handbrake control part located below the steering wheel and on the side of the steering assembly. After the foot brake pedal is stepped on, the handbrake control part can be operated to prevent the foot brake pedal from rebounding. The handbrake control part includes a rotating rod and a limit block. The rotating rod is provided with a torsion spring, and the limit block is fixedly connected to the rotating rod. After the rotating rod is rotated, the torsion spring is compressed, and the limit block and the stepped on foot brake pedal limit each other.

[0026] Beneficial effects: by controlling the hand brake control part, the foot brake pedal can be limited, the hand brake function is realized, the existing hand brake structure such as cable, ratchet and pawl does not need to be arranged, the hand brake structure is simplified, the equipment cost is reduced, through the mutual cooperation of the rotating rod, the torsional spring and the limiting block, after the rotating rod is rotated, the foot brake pedal after being stepped on can be limited, the rotating rod and the foot brake pedal cannot be reset, the hand brake function is realized, the existing ratchet and pawl structure is replaced, the overall structure is simple, and the equipment cost is low.

[0027] As a preferred embodiment of the utility model, the clutch brake linkage structure comprises a first driving assembly for controlling the brake, a second driving assembly for controlling the clutch, and a linkage control assembly for linkage control of the first driving assembly and the second driving assembly, the linkage control assembly can control the second driving assembly to disconnect the clutch when the first driving assembly controls the brake, and the linkage control assembly can control the first driving assembly to release the brake when the second driving assembly engages the clutch.

[0028] Beneficial effects: the linkage control assembly can linkage control the first driving assembly and the second driving assembly, ensure that the linkage control assembly will control the second driving assembly to automatically disconnect the clutch when the first driving assembly controls the brake, and vice versa, the linkage control assembly can control the first driving assembly to release the brake when the second driving assembly controls the clutch to engage, ensure that the brake and the clutch cannot be used at the same time, this setting can not only effectively prevent misoperation and avoid causing wear of related parts, but also is beneficial to prolong the service life of related parts and reduce maintenance cost, and can also avoid the influence of engine resistance during braking, and improve the safety of the braking process.

[0029] As a preferred embodiment of the utility model, the first driving assembly comprises a brake foot pedal control rod for controlling the brake, one end of the brake foot pedal control rod is fixed with a rotating shaft rotatably connected with the frame, the second driving assembly comprises a clutch foot pedal control rod for controlling the clutch, one end of the clutch foot pedal control rod is rotatably connected with the rotating shaft, and the linkage control assembly can rotate the clutch foot pedal control rod and the brake foot pedal control rod in opposite directions.

[0030] The linkage control assembly comprises a connecting rod, a third driving arm fixed with the rotating shaft, and a rotating plate fixed with the clutch fork shaft, the rotating plate comprises a first arm and a second arm extending outward, one end of the connecting rod is hinged with the first arm, the other end of the connecting rod is rotatably connected with one end of the third driving arm, the clutch foot pedal control rod is connected with the second arm, and the clutch foot pedal control rod can drive the clutch fork shaft.

[0031] Beneficial effects: The linkage control component can control the clutch pedal control lever and the brake pedal control lever to rotate in opposite directions. When the clutch pedal control lever is stepped on, the linkage control component can control the brake pedal control lever to automatically lift up. Conversely, when the brake pedal control lever is stepped on, the linkage control component can control the clutch pedal control lever to automatically lift up. The operation is simple and the driving requirements for the operator are low. Even drivers who are not proficient in vehicle operation can easily control it, which is conducive to wide use.

[0032] The clutch pedal control lever is connected to the second arm of the rotating plate. When the clutch is pressed, the clutch pedal control lever drives the rotating plate and the clutch fork shaft fixed to the rotating plate to rotate, thereby controlling the micro-tiller to move. Since the first arm of the rotating plate is hinged to one end of the connecting rod, when the rotating plate rotates, it can drive the connecting rod to rotate. The other end of the connecting rod is rotationally connected to one end of the third driving arm, thereby driving the third driving arm and the rotating shaft fixed to the third driving arm to rotate. The rotating shaft is fixed to the brake pedal control lever, thereby driving the brake pedal control lever to rotate in the opposite direction and lift the brake pedal control lever. Conversely, when the brake is pressed, the clutch pedal control lever will be lifted, which can effectively avoid the erroneous operation of pressing the clutch and brake at the same time, thereby avoiding wear of related components.

[0033] As a preferred embodiment of the present invention, it also includes a lampshade mounted outside the headlight, the lampshade includes a front lampshade for gathering light, and the front lampshade is provided with a plurality of through holes on the outside facing the left or right side of the four-wheel riding micro-tiller. When the headlight is on, the headlight cover and the headlight are used together for front lighting; when the headlight is flashing, the headlight cover, the through holes and the headlight are used together to indicate the direction.

[0034] Beneficial effects: The headlights of the present invention can be used as both headlights and turn signals. Compared with conventional headlights that require installation of both headlights and turn signals, the present invention only requires installation once, which can reduce the steps of installing lamps and reduce manufacturing costs. When the headlights are on for a long time, the headlight cover and the headlights work together to provide front lighting for the four-wheeled riding micro-tillage machine. When the headlights flash, the headlight cover, the through hole and the headlights work together to indicate the direction of the four-wheeled riding micro-tillage machine.

[0035] As a preferred embodiment of the present invention, it also includes a front fender for preventing mud from adhering to the engine. There are two front fenders, and the two front fenders are respectively arranged on both sides of the bottom of the engine and are respectively located in front of the corresponding front walking wheel fenders.

[0036] Beneficial effect: When the traveling wheel rotates in the paddy field, mud and water are thrown out under the action of centrifugal force. By arranging a front mudguard at the bottom of the engine, the mud and water splashing toward the engine are effectively intercepted, preventing the mud and water from adhering to the engine cylinder block, and when cleaning, only the bottom surface of the front mudguard needs to be cleaned; by combining the front mudguard with the front traveling wheel mudguard, the overall mud blocking range is expanded. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a principle block diagram of the hybrid power system of the utility model four-wheel ride-on micro-tillage machine;

[0038] Figure 2 This is a structural diagram of the steering wheel of the four-wheel ride-on micro-tillage machine of the utility model;

[0039] Figure 3 This is a structural diagram of a partially exploded steering wheel of a four-wheeled riding micro-tillage machine of the present invention;

[0040] Figure 5 This is a structural diagram of the steering assembly of the four-wheel ride-on micro-tillage machine of the utility model;

[0041] Figure 6 This is a schematic diagram of the partial structure of the steering assembly of the four-wheel ride-on micro-tillage machine of the utility model;

[0042] Figure 4 This is a partial structural diagram of the steering assembly of the four-wheel ride-on micro-tillage machine of the utility model from another angle;

[0043] Figure 7 It is a partial structural diagram of the steering assembly of the four-wheel riding micro-tillage machine equipment at another angle of the present invention.

[0044] Figure 8 This is a structural diagram of the utility model of a four-wheeled riding micro-tillage machine when the handbrake is applied;

[0045] Figure 9 This is a structural diagram of the utility model four-wheel ride-on micro-tillage machine when the foot brake pedal is not depressed;

[0046] Figure 10 This is a structural diagram of the front fender of the four-wheeled riding micro-tillage machine of the utility model from another angle;

[0047] Figure 11 This is a structural diagram of a partially exploded headlight and lampshade of a four-wheeled riding micro-tillage machine of the utility model;

[0048] Figure 12 This is a schematic diagram of the structure of the front light cover of the four-wheeled riding micro-tillage machine of the utility model;

[0049] Figure 13This is a structural diagram of the lamp and lampshade of the four-wheeled riding micro-tillage machine of the utility model, partially exploded from another angle;

[0050] Figure 14 This is a structural diagram of an embodiment of a rear gearbox of a four-wheeled riding micro-tillage machine of the present invention;

[0051] Figure 15 This is a structural diagram of the gear transmission part of the rear gearbox embodiment of the four-wheel ride-on micro-tillage machine of the present invention;

[0052] Figure 16 This is a structural diagram of the control handle transmission part of the rear gearbox embodiment of the four-wheel ride-on micro-tillage machine of the utility model;

[0053] Figure 17 This is a schematic structural diagram of the clutch and brake linkage assembly of the utility model four-wheel ride-on micro-tillage machine;

[0054] Figure 18 This is a structural diagram of the clutch and brake linkage assembly of the four-wheel riding micro-tillage machine of the utility model from another angle;

[0055] Figure 19 The utility model is a schematic diagram of the structure of a partial clutch and brake linkage assembly of a four-wheel riding micro-tillage machine. DETAILED DESCRIPTION

[0056] Typical embodiments that embody the features and advantages of the present invention are described in detail in the following description. It should be understood that the present invention is capable of various variations in different embodiments without departing from the scope of the present invention, and that the descriptions and illustrations herein are intended to be illustrative rather than limiting. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0057] Reference numerals include: round tube 2-1, first support rod 2-2, horizontal portion 2-201, bending portion 2-202, control portion 2-3, concave surface 2-4, connecting seat 2-5, accommodating cavity 2-6, first nut 2-7, connecting cover 2-8;

[0058] Worm shaft 3-1, worm gear shaft 3-2, steering wheel 3-3, housing 3-4, first bearing 3-5, second bearing 3-6, adjusting screw 3-7, third bearing 3-8, limiting ball 3-9, retaining ring 3-10, support sleeve 3-11, support tube 3-12, flange 3-13, first connecting plate 3-14, connecting hole 3-15, second nut 3-16;

[0059] Foot brake pedal 4-1, rotating sleeve 4-11, first rotating plate 4-12, pedal body 4-13, pull wire 4-14, first slot 4-15, handbrake control unit 4-2, rotating rod 4-21, limit block 4-22, fixing sleeve 4-23, rotating handle 4-24, torsion spring 4-25;

[0060] Front fender 5-1, first mounting hole 5-61, second mounting hole 5-62; lampshade 6-1, front lampshade 6-101, first cylinder 6-1011, second cylinder 6-1012, through hole 6-1013, annular chuck 6-1014, connecting strip 6-1015, rear lampshade 6-102, notch 6-1021, second slot 6-1022, headlight 6-2, second support rod 6-3, second connecting plate 6-4;

[0061] First transmission shaft 7-1, second transmission shaft 7-2, third transmission shaft 7-3, first-stage speed change mechanism 7-4, first shift fork lever 7-41, third engaging groove 7-411, first double gear 7-42, first transmission gear 7-43, first rotating part 7-44, V-shaped plate 7-441, first extension rod 7-442, center rod 7-443, second-stage speed change mechanism 7-5, second shift fork lever 7-51, fourth engaging groove 7-511, second double gear 7-52, second transmission gear 7-53, second rotating part 7-54, second rotating plate 7-541, second extension rod 7-542, arc-shaped groove 7-55, elastic member 7-6, control handle 7-7, hinge part 7-71, plate body 7-72, first strip hole 7-73, rear walking wheel transmission shaft 7-10;

[0062] Brake foot control lever 8-1, brake foot pedal 8-11, clutch foot control lever 8-2, first drive arm 8-21, clutch control line 8-211, clutch foot pedal 8-22, rotating shaft 8-3, second drive arm 8-31, third drive arm 8-32, connecting rod 8-4, second bar hole 8-41, third rotating plate 8-5, first arm 8-51, first adjustment hole 8-511, first spring 8-512, pin rod 8-513, second arm 8-52, second adjustment hole 8-521, second spring 8-522, connecting member 8-53, third adjustment hole 8-531, clutch fork shaft 8-6, adjusting member 8-7, brake connecting line 8-8, brake control line 8-9.

[0063] The four-wheeled riding micro-tillage machine adopts an internal combustion engine and / or electric drive, and includes a battery assembly, a controller, an electric motor, an internal combustion engine, a starter motor, a front gearbox, a rear gearbox, a front axle, a rear axle, a seat located on a rear frame, a steering wheel, a steering assembly for controlling the four-wheeled riding micro-tillage machine, a handbrake assembly, a clutch-brake linkage structure, a front fender 5-1 for preventing mud from adhering to the engine, and headlights 6-2 symmetrically arranged on both sides of the front of the four-wheeled riding micro-tillage machine and a lampshade 6-1 mounted outside the headlights 6-2.

[0064] Among them, one end of the crankshaft of the internal combustion engine (a gasoline engine in this embodiment) is connected to the input end of the front gearbox, and the rotor of the motor (a permanent magnet synchronous motor in this embodiment) is on the crankshaft, so that the input ends of the internal combustion engine, the motor, and the front gearbox can rotate coaxially; by installing the motor on the crankshaft, it replaces the original flywheel in the internal combustion engine, so that when the internal combustion engine is working, it will synchronously drive the motor and the front gearbox to enable the motor to generate electricity; the motor can also drive the front gearbox and drive the internal combustion engine to idle at the same time; and the motor and the internal combustion engine can drive the front gearbox at the same time, providing additional torque and power, which is beneficial for acceleration, climbing, and tilling hard soil, and realizes the synchronous drive or separate drive of the internal combustion engine and the battery.

[0065] In other embodiments, the internal combustion engine may be a diesel engine or a gas engine; the output shaft of the motor may be driven to the crankshaft via a belt or a pulley, or via two sets of gears.

[0066] Among them, when the internal combustion engine is driven, the internal combustion engine works, the motor works as a generator, the rotor rotates, cutting the magnetic lines of force, and the stator coil generates alternating current, which is converted into direct current through a bidirectional DC-AC converter, and then passed through a DC-DC converter for voltage regulation to charge the battery assembly; the output current of the battery assembly is converted through a DC-DC converter and a bidirectional DC-AC converter, which can drive the motor to drive the crankshaft to rotate. The output current of the battery assembly can be used to power the controller (a single-chip microcomputer in this embodiment) through a voltage stabilizer, including a starter motor. The output current of the battery assembly passes through a DC-DC converter to power the starter motor, and the starter motor provides initial power for the internal combustion engine.

[0067] Among them, Figure 1 As shown, the four-wheel ride-on micro-tillage machine equipment of this embodiment has a starting mode, an internal combustion engine mode, an electric mode and a hybrid mode; when in the internal combustion engine mode, the internal combustion engine drives the front gearbox and at the same time drives the motor to generate electricity and charge the battery assembly; when in the electric mode, the battery assembly supplies power to the motor, and the motor drives the front gearbox; when in the hybrid mode, the battery assembly supplies power to the motor, and the motor and the internal combustion engine drive the front gearbox at the same time.

[0068] When the charge in the battery pack exceeds the preset value and the load is low (driving on flat ground, tilling loose soil), the electric mode can be used; when the charge in the battery pack is lower than the preset value or the load is moderate, the internal combustion engine mode is used; when the load is high (acceleration, climbing, towing cargo or tilling hard soil), the hybrid mode is used. By setting different modes, the energy utilization rate is improved, the maximum torque of the walking wheels and tillage tools is increased, and it can adapt to different walking and tillage environments.

[0069] The power output of the front gearbox drives the front axle, and the power output of the rear gearbox drives the rear axle. Both the front axle and the rear axle can be removed to install tillage implements or travel wheels. The front gearbox and the rear gearbox can be switched to multi-speed four-wheel drive travel mode, multiple four-wheel drive tillage modes or multi-speed two-wheel drive travel mode.

[0070] By switching the gear of the front gearbox and the rear gearbox, multi-speed four-wheel drive walking mode, multiple four-wheel drive farming modes or multi-speed two-wheel drive walking mode can be switched. The four-wheel drive walking mode means that both the front gearbox and the rear gearbox output power to the walking wheels. The two-wheel drive walking mode means that the front gearbox outputs power to the walking wheels and the rear gearbox uses neutral gear. Moreover, in the four-wheel drive walking mode or the two-wheel drive walking mode, low or high speed walking can be adopted by switching the gear of the front gearbox.

[0071] like Figure 14 As shown, the rear gearbox of this embodiment includes a first transmission shaft 7-1, a second transmission shaft 7-2, a third transmission shaft 7-3, a first-stage speed change mechanism 7-4, and a second-stage speed change mechanism 7-5. The first-stage speed change mechanism 7-4 can switch a variety of first-stage gears to change the transmission ratio between the first transmission shaft 7-1 and the second transmission shaft 7-2, and the second-stage speed change mechanism 7-5 can switch a variety of second-stage gears to change the transmission ratio between the second transmission shaft 7-2 and the third transmission shaft 7-3; power is transmitted from the front gearbox to the rear gearbox, and in the rear gearbox, power is transmitted to the rear walking wheel drive shaft 7-10 and the rear walking wheel drive shaft 7-10 in sequence through the first transmission shaft 7-1, the second transmission shaft 7-2, and the third transmission shaft 7-3; by setting the first-stage speed change mechanism 7-4 and the second-stage speed change mechanism 7-5, the total number of gears in the rear gearbox is increased, which can be suitable for various farming needs.

[0072] Among them, Figure 15As shown, the first-stage speed change mechanism 7-4 includes a first fork rod 7-41 and a first double gear 7-42. The first double gear 7-42 is slidably mounted on the first transmission shaft 7-1, and two first transmission gears 7-43 are fixedly mounted on the second transmission shaft 7-2. The first fork rod 7-41 shifts the first double gear 7-42 so that the corresponding side of the first double gear 7-42 slides to engage with the corresponding first transmission gear 7-43; the first double gear 7-42 is pushed to slide along the first transmission shaft 7-1 by the first fork rod 7-41. The gear radii on both sides of the first double gear 7-42 are different. When the corresponding sides engage with the corresponding first transmission gear 7-43, different transmission ratios are formed, thereby realizing gear switching.

[0073] Among them, Figure 15 As shown, the two-stage speed change mechanism 7-5 includes a second fork rod 7-51 and a second double gear 7-52, the second double gear 7-52 is slidably installed on the second transmission shaft 7-2, and two second transmission gears 7-53 are fixedly installed on the third transmission shaft 7-3. The second fork rod 7-51 shifts the second double gear 7-52 so that the corresponding side of the second double gear 7-52 slides to engage with the corresponding second transmission gear 7-53; the shifting principle of the two-stage speed change mechanism 7-5 is the same as that of the one-stage speed change mechanism 7-4. The first transmission shaft 7-1 transmits power to the second transmission shaft 7-2 for one-stage speed change, and then transmits it to the third transmission shaft 7-3 for two-stage speed change to achieve multi-gear adjustment.

[0074] Among them, Figure 16 As shown, the first-stage speed change mechanism 7-4 also includes a first rotating part 7-44, and the second-stage speed change mechanism 7-5 also includes a second rotating part 7-54. The first fork rod 7-41 and the second fork rod 7-51 are both installed in a transverse sliding manner on the transmission housing. A control handle 7-7 is provided on the outside of the transmission housing. The control handle 7-7 controls the first rotating part 7-44 to rotate in the Z-axis direction, or controls the second rotating part 7-54 to rotate in the Y-axis direction, so that the first rotating part 7-44 pushes the first fork rod 7-41 to slide, or the other end of the second rotating part 7-54 pushes the second fork rod 7-51 to slide; by rotating in two directions with a single control handle 7-7, the first-stage speed change mechanism 7-4 and the second speed change mechanism can be controlled to shift gears respectively, which reduces the overall space occupied and saves costs. In this embodiment, the Y-axis direction is parallel to the forward direction of the four-wheel ride-on micro-tiller, and the Z-axis direction is vertically perpendicular to the Y-axis direction.

[0075] Among them, Figure 15 and Figure 16As shown, the second shift fork rod 7-51 is vertically provided with a fourth slot 7-511 on the outside of the gearbox housing, and the second rotating part 7-54 includes a second rotating plate 7-541 and a second extension rod 7-542. One end of the second extension rod 7-542 extends to the bottom of the seat and is connected to the control handle 7-7 through a hinge part 7-71. The other end of the second extension rod 7-542 is fixedly connected to one end of the second rotating plate 7-541, and the other end of the second rotating plate 7-541 extends into the fourth slot 7-511; rotating the control handle 7-7 around the Y-axis direction can drive the second rotating plate 7-541 to rotate through the second extension rod 7-542, so that the end of the second rotating plate 7-541 can swing left and right around the center of rotation, thereby pushing the second shift fork rod 7-51 laterally, and the second shift fork rod 7-51 pushes the second double gear 7-52 to shift gears.

[0076] Among them, Figure 16 and Figure 17As shown, the first fork rod 7-41 is provided with a third slot 7-411 transversely on the outside of the gearbox housing, the first rotating part 7-44 includes a V-shaped plate 7-441, a first extension rod 7-442 and a center rod 7-443 installed on the outside of the gearbox housing, one end of the V-shaped plate 7-441 extends into the slot, the middle of the V-shaped plate 7-441 is provided with a first through hole, and is rotatably installed on the center rod 7-443 through the first through hole, and the other end of the V-shaped plate 7-441 is provided with a There is a second through hole, both ends of the first extension rod 7-442 are bent upward, one end of the first extension rod 7-442 is rotatably connected to the second through hole, a plate body 7-72 ​​is welded on the control handle 7-7, and a first strip hole 7-73 is vertically opened on the plate body 7-72. The other end of the first extension rod 7-442 passes through the first strip hole 7-73, and the upper part of the control handle 7-7 is fixedly connected with a plate body 7-72 ​​against the outer side of the hinge part 7-71 and is located at the control handle 7-7 When the control handle 7-7 rotates around the Z-axis, it drives the plate body 7-72 ​​to move forward and backward in the Y-axis direction; when the control handle 7-7 rotates around the Y-axis, the other end of the first extension rod 7-442 can move in the first bar-shaped hole 7-73; the control handle 7-7 drives the plate body 7-72 ​​to move forward and backward in the Y-axis direction, which will pull one side of the V-shaped plate 7-441, so that the V-shaped plate 7-441 rotates around the center rod 7-443 as a whole, thereby pushing the first fork rod 7-41, and The control handle 7-7 is hinged to the second extension rod 7-542, so that when the control handle 7-7 rotates around the Z-axis, it will not drive the second extension rod 7-542 to rotate. When the control handle 7-7 rotates around the Y-axis, the rotation angle required for shifting gears is small. Therefore, although the plate body 7-72 ​​will follow the control handle 7-7 to rotate around the Y-axis, the movement of the plate body 7-72 ​​is small. By providing the first strip hole 7-73, the movement of the plate body 7-72 ​​can be prevented from affecting the first extension rod 7-442.

[0077] Among them, such as Figure 14 As shown, the first shift fork rod 7-41 and the second shift fork rod 7-51 are both spaced apart and provided with a plurality of arc grooves 7-55 in the rear gearbox housing, and each arc groove 7-55 corresponds to a first gear position or a second gear position, and two elastic members 7-6 are fixedly connected to the inner wall of the rear gearbox housing, and the two elastic members 7-6 are respectively pressed tightly in the corresponding arc grooves 7-55; by setting the arc grooves 7-55 and the elastic members 7-6, the elastic members 7-6 are pressed tightly, and when no external force is applied or the applied force is small, the elastic member 7-6 cannot be separated from the arc groove 7-55, and the first shift fork rod 7-41 and the second shift fork rod 7-51 can be positioned; the elastic member 7-6 includes a compression spring and a ball, and the compression spring presses the ball in the arc groove 7-55.

[0078] In other embodiments, the first-stage speed change mechanism 7-4 and the second speed change mechanism may also use synchronizers for shifting, and multiple synchronizers are slidably installed on the first transmission shaft 7-1 or the second transmission shaft 7-2, and the gears used for shifting are rotatably installed on the first transmission shaft 7-1 or the second transmission shaft 7-2. The synchronizer is pushed into the gear used for shifting by the shift fork rod, so that the gear rotates synchronously with the corresponding transmission shaft to achieve shifting.

[0079] like Figure 2 As shown, the steering wheel of the four-wheeled riding micro-tillage machine equipment includes an annular circular tube 2-1, a plurality of circumferentially spaced inclined and inwardly bent first support rods 2-2, a control unit 2-3 and a connecting seat 2-5. The plurality of inwardly bent first support rods 2-2 cooperate with the circular tube 2-1 to reserve operating space for the components on the four-wheeled riding micro-tillage machine equipment.

[0080] like Figure 2 As shown, a plurality of concave surfaces 2-4 are circumferentially spaced apart on the lower surface of the circular tube 2-1, and the concave surfaces 2-4 smoothly transition to the lower surface of the circular tube 2-1. The first support rod 2-2 includes a horizontal straight portion 2-201 and an inwardly bent bent portion 2-202. One end of the bent portion 2-202 is connected to the circular tube 2-1, and the other end is connected to the horizontal straight portion 2-201. One end of the horizontal straight portion 2-201 is fixedly connected to the connecting seat 2-5.

[0081] In this embodiment, there are three first support rods 2-2 in total. The connection between the bent portion 2-202 and the horizontal portion 2-201 is an arc. The bent portion 2-202 is welded to the inner surface of the circular tube 2-1, and the bent portion 2-202 is located below the upper surface of the circular tube 2-1. One of the first support rods 2-2 is provided with a control portion 2-3 for grasping at one end connected to the circular tube 2-1. The hand grasps and drives the control portion 2-3 to rotate circumferentially, and the control portion 2-3 drives the circular tube 2-1 to rotate circumferentially. In this embodiment, the control portion 2-3 is a sphere, which can be a plastic ball. The sphere is located above the circular tube 2-1. The sphere is located above the circular tube 2-1, which makes it easy for the driver to grasp it. The first support rod 2-2 is provided with a vertical support foot. The support foot is located inside the circular tube 2-1. The sphere is threadedly connected to the support foot on the first support rod 2-2.

[0082] The connecting seat 2-5 is connected to the first steering member. In this embodiment, the connecting seat 2-5 is provided with a receiving cavity 2-6 for receiving the first nut 2-7 connected to one end of the first steering member. The inner surface of the bottom of the receiving cavity 2-6 abuts against the first nut 2-7. The connecting seat 2-5 is spline-connected to one end of the first steering member. Figure 3As shown, the connecting seat 2-5 is snapped with a connecting cover 2-8 for covering the accommodating cavity 2-6. In this embodiment, when the connecting seat 2-5 and the connecting cover 2-8 are snapped together, the outer surface of the connecting cover 2-8 fits with the inner surface of the accommodating cavity 2-6, and the upper surface of the connecting cover 2-8 is located above the upper surface of the connecting seat 2-5, which makes it convenient to hold the connecting cover 2-8.

[0083] One end of the support rod is connected to the steering shaft, and the other end is connected to the round tube. Since the support rod is bent inward, the support rod first ensures that the steering wheel is in the normal position. Secondly, the support rod is bent inward, and the distance between the support rod and the orthographic projection of the round tube is increased. When the driver operates the throttle switch to rotate circumferentially in the vertical plane, the driver's hand will not touch the support rod, and the throttle switch can be smoothly operated. The driver can press the control button without hindrance. The support rod can be stably connected to the first steering member through the connecting seat, and the support rod can be stably connected to the steering shaft through the horizontal portion, and the distance between the bent portion and the orthographic projection of the round tube can be increased through the bent portion, thereby reserving sufficient operating space for the throttle switch and the control button. The design of the control portion can add an extra control point on the steering wheel. When the direction needs to be adjusted quickly, the driver can directly control the steering wheel rotation by gripping the control portion, thereby improving operational flexibility. In certain emergency situations, it is convenient for the driver to quickly adjust the direction with one hand.

[0084] like Figure 5 As shown, the steering assembly includes a first steering member, a second steering member meshing with the first steering member, a box body 3-4 for accommodating the worm shaft 3-1 and the worm wheel shaft 3-2, and a first connecting plate 3-14 connected to the box body 3-4. In this embodiment, the first steering member and the second steering member can also be a pair of meshing bevel gears.

[0085] In this embodiment, the first steering member is a worm shaft 3-1, one end of which is fixedly connected to a steering wheel 3-3 on a four-wheeled riding micro-tillage machine. Figure 6 As shown, a first bearing 3-5 is provided on the other end and is mounted on the box body 3-4 through the first bearing 3-5. Figure 7 As shown, a support sleeve 3-11 is sleeved on the worm shaft 3-1, and the support sleeve 3-11 is loosely fitted with the worm shaft 3-1. The support sleeve 3-11 is connected to a support tube 3-12 which is coaxial with the worm shaft 3-1. A flange 3-13 is connected to the support tube 3-12, and the flange 3-13 is connected to the box body 3-4. An annular paper pad is provided between the flange 3-13 and the box body 3-4.

[0086] In this embodiment, the support sleeve 3-11 is a wear-resistant sleeve, which can be a plastic product. The support sleeve 3-11 includes a ring and a hollow cylinder. The ring is connected to the first hollow cylinder. The first hollow cylinder extends into the support tube 3-12 and is clamped with the support tube 3-12. The upper end of the support tube 3-12 abuts against the ring, and the lower end of the support tube 3-12 is fixedly connected to the flange 3-13.

[0087] like Figure 6 As shown, the second steering member is a worm gear shaft 3-2, one end of the worm gear shaft 3-2 is provided with a second bearing 3-6, and the other end is rotatably connected to the box body 3-4, and the interior is hollow. The worm gear shaft 3-2 is connected to the box body 3-4 through the second bearing 3-6, and the end of the worm gear shaft 3-2 close to the second bearing 3-6 is connected to the pull rod on the four-wheel riding micro-tiller equipment. A fan-shaped worm gear is provided on the worm gear shaft 3-2, and the fan-shaped worm gear on the worm gear shaft 3-2 is engaged with the spiral teeth on the worm shaft 3-1. The fan-shaped worm gear on the worm gear shaft 3-2 and the spiral teeth on the worm shaft 3-1 are both located in the box body 3-4.

[0088] The driver can indirectly control the steering of the four-wheel riding micro-tiller through the worm shaft and the worm gear shaft. Since only one-fourth of the worm gear is used when steering the four-wheel riding micro-tiller, the worm gear in this solution is designed as a fan-shaped worm gear. While meeting the power transmission requirements, it can make the overall structure of the steering assembly compact and reduce costs compared to using a complete worm gear.

[0089] One end of the worm shaft 3-2 away from the second bearing 3-6 is connected with a retaining ring 3-10 and an adjusting screw 3-7. The adjusting screw 3-7 is provided with a third bearing 3-8 located in the worm shaft 3-2. The adjusting screw 3-7 is connected to the worm shaft 3-2 through the third bearing 3-8. The adjusting screw 3-7 and the worm shaft 3-2 are coaxial. One end of the adjusting screw 3-7 is provided with a limiting ball 3-9 abutting against the third bearing 3-8. The retaining ring 3-10 abuts against the third bearing 3-8. One end of the adjusting screw 3-7 extends out of the box body 3-4 and is connected to the second nut 3-16. One end face of the second nut 3-16 abuts against the outer surface of the box body 3-4.

[0090] In this embodiment, a second hollow cylinder is provided in the box body 3-4, one end of the worm shaft 2 connected to the adjusting screw 3-7 extends into the second hollow cylinder, and the retaining ring 3-10 is a retaining ring for the hole.

[0091] In this embodiment, the second nut 3-16 is connected with the adjusting screw 3-7, rotating the second nut 3-16 makes the second nut 3-16 axially close to the worm wheel along the worm shaft 3-2, because one end surface of the second nut 3-16 abuts against the outer surface of the box body, when the second nut 3-16 rotates, the adjusting screw 3-7 moves axially along the worm shaft 3-2, because the third bearing abuts against the check ring, the worm shaft 3-2 is limited by the check ring through the third bearing, so when the adjusting screw 3-7 moves axially along the worm shaft 3-2, the adjusting screw 3-7 drives the worm shaft 3-2 to move slightly along the worm shaft 3-2, so that the worm on the worm shaft 3-2 is fully engaged with the worm on the worm shaft 3-1, the limiting ball and the check ring can limit the third bearing, thereby limiting the adjusting screw 3-7, so that the adjusting screw 3-7 can drive the worm shaft 3-1 to move axially when the adjusting screw 3-7 moves axially along the worm shaft 3-2, improving the precision of the engagement of the worm shaft 3-2 and the worm shaft 3-1, ensuring effective power transmission and effective steering.

[0092] The first connecting plate 3-14 is symmetrically provided with connecting pieces, each group of connecting pieces includes two symmetrically arranged connecting holes 3-15, and the connecting holes 3-15 are connected with the connecting support frames on the four-wheel riding type mini-cultivation machine.

[0093] The power transmission of the embodiment is as follows: the operator controls the steering wheel 3-3 to rotate circumferentially in the horizontal plane, because the steering wheel 3-3 is fixedly connected with the worm shaft 3-1, the steering wheel 3-3 drives the worm shaft 3-1 to rotate circumferentially in the horizontal plane, the helical teeth on the worm shaft 3-1 are engaged with the worm on the worm shaft 3-2, thereby driving the worm shaft 3-2 to rotate circumferentially in the vertical plane, the end of the worm shaft 3-2 located outside the box body 3-4 is connected with a driving arm, the driving arm is connected with a pull rod, the end of the pull rod away from the driving arm is provided with a gear, the front wheels of the four-wheel riding type mini-cultivation machine are connected with steering arms, a rack is arranged between the two steering arms, transverse pull rods are arranged between the rack and the corresponding steering arms at both ends of the rack, the worm shaft 3-2 drives the gear to engage with the rack through the driving arm and the pull rod, so that the steering arms rotate circumferentially in the horizontal plane, thereby driving the wheels to steer (the driving arm, the pull rod, the steering arm and the transverse pull rod are conventional steering components, and will not be described in detail).

[0094] The hand brake assembly includes a foot brake pedal 4-1 located below the steering wheel and at the side of the steering assembly and a hand brake control part 4-2, after the foot brake pedal 4-1 is stepped on, the hand brake control part 4-2 can block the rebound of the foot brake pedal 4-1; the foot brake pedal 4-1 can be limited by controlling the hand brake control part 4-2, thereby realizing the hand brake function, and further simplifying the hand brake structure, without the need to set the existing hand brake structure, thereby reducing the cost of the equipment.

[0095] In the formula, A is a divalent aromatic group, B is a divalent aliphatic group, and n is an integer of 1 to 4. Figure 8As shown, the foot brake pedal 4-1 includes a rotating sleeve 4-11, a first rotating plate 4-12 and a pedal body 4-13. The pedal body 4-13 and the first rotating plate 4-12 are both fixedly mounted on the rotating sleeve 4-11, with the pedal body 4-13 located on the outside and the first rotating plate 4-12 located on the inside. Both of them extend radially with respect to the rotating sleeve 4-11 and are arranged at an acute angle. In this embodiment, the first rotating plate 4-12 is connected to the housing of the four-wheel riding micro-tiller through a pull wire 4-14 with a spring, so that after the pedal body 4-13 is stepped on, it can be restored to its original position through the pull wire 4-14.

[0096] Among them, such as Figure 10 As shown, the handbrake control unit 4-2 includes a rotating rod 4-21 and a limit block 4-22. The rotating rod 4-21 is provided with a torsion spring 4-25. The middle part of the torsion spring 4-25 is sleeved on the fixed sleeve 4-23. One end of the torsion spring 4-25 is clamped on the housing of the four-wheel riding micro-tiller. The other end of the torsion spring 4-25 is fixedly connected to the rotating rod 4-21. The limit block 4-22 is fixedly connected to the rotating rod 4-21. The top of the first rotating plate 4-12 is provided with a first slot 440 engaged with the limit block 4-22. -15, after the rotating rod 4-21 is rotated, the torsion spring 4-25 is compressed, and the limit block 4-22 and the foot brake pedal 4-1 that is stepped on are limited to each other; through the mutual cooperation of the rotating rod 4-21, the torsion spring 4-25 and the limit block 4-22, after the rotating rod 4-21 is rotated, the rotating rod 4-21 and the foot brake pedal 4-1 that is stepped on can be limited to each other, and the rotating rod 4-21 and the foot brake pedal 4-1 cannot be reset, thereby realizing the handbrake function, replacing the existing ratchet and pawl structure. The overall structure of this solution is simple and the equipment cost is low.

[0097] Among them, such as Figure 8 As shown, when the limit block 4-22 is engaged with the first slot 4-15, the length direction of the first rotating plate 4-12 is parallel to the Z-axis direction, and the vertical surface and horizontal surface of the first slot 4-15 are both against the limit block 4-22; according to the above relationship, the vertical surface of the first slot 4-15 makes it impossible for the first rotating plate 4-12 to rebound, and the horizontal surface of the first slot 4-15 makes it impossible for the rotating rod 4-21 to rebound, so that the mutual limitation of the two can be achieved; in this embodiment, the Z-axis direction is the direction perpendicular to the horizontal plane.

[0098] Among them, such as Figure 9As shown, the first slot 4-15 is located on the side of the first rotating plate 4-12 away from the pedal body 4-13. When the limit block 4-22 is engaged with the first slot 4-15, continue to step on the pedal body 4-13, and the limit block 4-22 can be disengaged from the first slot 4-15; through the above structure, when the handbrake state is released, directly step on the pedal rod downward, the limit block 4-22 loses the obstruction of the first slot 4-15, and the limit block 4-22 returns to its original position. After releasing the pedal rod, the pedal rod is no longer blocked by the limit block 4-22 and can be restored to its original position. There is no need to operate the handbrake control unit 4-2, and the operation is more convenient.

[0099] Among them, such as Figure 10 As shown, the handbrake control unit 4-2 also includes a fixed sleeve 4-23 and a rotating handle 4-24, the fixed sleeve 4-23 is fixedly installed on the shell of the four-wheel riding micro-tiller, the rotating rod 4-21 is passed through the fixed sleeve 4-23, the limit block 4-22 is fixedly connected to one end of the rotating rod 4-21, and the rotating handle 4-24 is detachably connected to the other end of the rotating rod 4-21, and the limit block 4-22 and the rotating handle 4-24 are respectively in contact with the two ends of the fixed sleeve 4-23; through the above structure, the rotating rod 4-21 is passed through the fixed sleeve 4-23, and then the rotating handle 4-24 is installed to complete the installation, which is convenient to install and makes the rotating rod 4-21 only able to rotate relative to the fixed sleeve 4-23, and unable to move laterally.

[0100] Among them, such as Figure 9 As shown, when the foot brake pedal 4-1 is not stepped on, the limit block 4-22 is located between the first rotating plate 4-12 and the housing of the four-wheel ride-on micro-tiller; by setting the above structure, when the foot brake pedal 4-1 is not stepped on, the limit block 4-22 is blocked by the first rotating plate 4-12, so that the rotating handle 4-24 cannot be pulled up, avoiding accidental touching of the rotating handle 4-24, which causes the foot brake pedal to be unable to be stepped on. The four-wheel ride-on micro-tiller equipment of the present invention adopts the brake structure described above, the overall brake structure is simple, occupies little space, and the equipment cost is low.

[0101] Specific use (working) process: During driving, the pedal body 4-13 can be stepped on to brake, and after releasing the pedal body 4-13, the pedal body 4-13 rebounds to its original position; when the four-wheeled riding micro-tiller needs to stop, the pedal body 4-13 is stepped on to brake, slowing down until it stops. After stopping, the foot keeps stepping on the pedal, and the rotating handle 4-24 is rotated by hand. The rotating rod 4-21 drives the limit block 4-22 to rotate 90 degrees. The foot is released, and the pedal body 4-13 rebounds (although it rebounds for a distance, the brake pads The pedal body 4-13 is stepped on downwards directly, and the limit block 4-22 loses the obstruction of the first slot 4-15, and the limit block 4-22 returns to its original position. After the pedal rod is released, the pedal rod is no longer blocked by the limit block 4-22 and can be returned to its original position. There is no need to operate the handbrake control unit 4-2, and the operation is more convenient.

[0102] like Figure 17 As shown, the clutch-brake linkage structure is set in area A of the riding micro-tiller, the area B of the riding micro-tiller is also provided with a clutch manual control unit, and the area C of the riding micro-tiller is also provided with a brake manual control unit. Figure 18 As shown, it includes a first drive component for controlling the brake, a second drive component for controlling the clutch, and a linkage control component for linkage control of the first drive component and the second drive component. The first drive component includes a brake pedal control rod 8-1 for controlling the brake, as shown Figure 18 As shown, one end of the brake pedal control rod 8-1 is fixed with a rotating shaft 8-3 rotatably connected to the frame, and the other end of the brake pedal control rod 8-1 is fixed with a brake pedal 8-11. The second drive assembly includes a clutch pedal control rod 8-2 for controlling the clutch, and one end of the clutch pedal control rod 8-2 is rotatably connected to the end of the rotating shaft 8-3 after passing through the frame, and the other end of the clutch pedal control rod 8-2 is fixed with a clutch pedal 8-22. The clutch pedal 8-22 and the brake pedal 8-11 are distributed on both sides of the frame.

[0103] like Figure 19As shown, the linkage control assembly includes a connecting rod 8-4, a third drive arm 8-32, and a rotating plate fixed to the clutch fork shaft 8-6. The clutch fork shaft 8-6 is fixed to the middle of the rotating plate. The rotating plate has a first arm 8-51 and a second arm 8-52 extending outward from the middle. The second arm 8-52 is connected to the clutch pedal control rod 8-2. The first arm 8-51 is hinged to one end of the connecting rod 8-4. Specifically, a pin rod 8-513 is fixed to the free end of the first arm 8-51. A strip hole is formed at one end of the connecting rod 8-4. The pin rod 8-513 is inserted into the strip hole. By reserving the strip hole, sufficient connection space can be reserved during assembly, thereby improving assembly efficiency. The middle part of the third driving arm 8-32 is fixed to the rotating shaft 8-3, and the end of the connecting rod 8-4 away from the first arm 8-51 is rotatably connected to one end of the third driving arm 8-32, that is, the connection point between the connecting rod 8-4 and the third driving arm 8-32 is eccentrically set relative to the rotating shaft 8-3.

[0104] During operation, when the brake pedal 8-11 is stepped on, the brake pedal control rod 8-1 swings counterclockwise, and the brake pedal control rod 8-1 drives the rotating shaft 8-3 and the third drive arm 8-32 to rotate counterclockwise synchronously. The third drive arm 8-32 is rotatably connected to one end of the connecting rod 8-4, and the third drive arm 8-32 drives the connecting rod 8-4 to swing. The other end of the connecting rod 8-4 is connected to the first arm 8-51 of the rotating plate. When the connecting rod 8-4 swings, it drives the rotating plate to rotate counterclockwise. The second arm 8-52 of the rotating plate is connected to the clutch pedal control rod 8-2. The second arm 8-52 drives the clutch pedal control rod 8-2 to swing clockwise, and the clutch pedal control rod 8-2 is lifted upward. During this process, the clutch fork shaft 8-6 is fixed in the middle of the rotating plate. The rotation of the rotating plate will drive the clutch fork shaft 8-6 to rotate counterclockwise synchronously, so that the clutch is disconnected and braking is achieved.

[0105] When the clutch pedal 8-22 is stepped on, the clutch pedal control lever 8-2 swings counterclockwise, and the clutch pedal control lever 8-2 drives the rotating plate and the clutch fork shaft 8-6 fixed to the rotating plate to rotate clockwise, so that the clutch engages, thereby controlling the micro-tiller to move. At this time, since the first arm 8-51 of the rotating plate is hinged to one end of the connecting rod 8-4, when the rotating plate rotates, it can drive the connecting rod 8-4 to swing, and the other end of the connecting rod 8-4 is rotationally connected to one end of the third drive arm 8-32, thereby driving the third drive arm 8-32 and the rotating shaft 8-3 fixed to the third drive arm to rotate clockwise. One end of the brake pedal control lever 8-1 is fixed to the rotating shaft 8-3, and the brake pedal control lever 8-1 swings clockwise. The brake pedal control lever 8-1 is lifted upward, the brake is released, and the micro-tiller moves.

[0106] Furthermore, a first spring 8-512 is connected between the rotating plate and the frame. Specifically, a plurality of first adjustment holes 8-511 are provided on the first arm 8-51. Two of them are provided in this embodiment. One end of the first spring 8-512 is fixed to the frame, and the other end is hooked on the first adjustment hole 8-511. By setting the first spring 8-512, it can be ensured that after the clutch is released, the first spring 8-512 can drive the rotating plate to automatically reset, and then drive the clutch foot control lever 8-2 to automatically reset, so that the clutch is disconnected, and the micro-tiller will not continue to move forward, thereby reducing the risk of accidental slipping of the operator when the clutch is not stepped on, and improving the safety of the equipment; by setting a plurality of first adjustment holes 8-511, the first spring 8-512 can be hooked in different first adjustment holes 8-511, and the stretching distance of the first spring 8-512 can be changed, and then the elastic force of the spring can be adjusted. After the elastic force of the spring weakens after a long time, the elastic force of the spring can be increased by changing the hooking position of the first spring 8-512 to ensure the resetting effect of the rotating plate by the first spring 8-512, thereby ensuring safety.

[0107] Further, such as Figure 19 As shown, an elastic member is connected between the clutch pedal control lever 8-2 and the second arm 8-52. In this embodiment, the elastic member is a second spring 8-522. By providing the second spring 8-522 between the clutch pedal control lever 8-2 and the second arm 8-52, when the clutch is pressed and the clutch pedal control lever 8-2 drives the second arm 8-52 to rotate, the elastic member will first deform, and then drive the second arm 8-52 to rotate after the deformation reaches a limit. If the operator accidentally steps on the clutch, the elastic member will first elastically deform, but at this time, the second arm 8-52 has not yet rotated, the clutch is not engaged, and the micro-tiller will not move forward. Therefore, through this configuration, the safety risk caused by the operator accidentally stepping on the clutch can be reduced, further improving driving safety.

[0108] Furthermore, the first drive assembly also includes a second drive arm 8-31 that rotates synchronously with the brake pedal control rod 8-1. The second drive arm 8-31 is V-shaped, and the middle portion of the second drive arm 8-31 is fixed to the brake pedal control rod 8-1. The two free ends of the second drive arm 8-31 are respectively connected to a brake connecting line 8-8 and a brake control line 8-9. The brake connecting line 8-8 is connected to the brake drum, and the brake control line 8-9 is connected to the manual brake control unit. When the vehicle is parked, the brake control line 8-9 is tightened by the manual brake control unit, thereby driving the second drive arm 8-31 to rotate. When the second drive arm 8-31 rotates, the brake connecting line 8-8 drives the brake drum to brake, thereby preventing the vehicle from sliding, especially on slopes. This can ensure that the vehicle is stable and motionless, prevent accidents, and improve safety.

[0109] The second drive assembly also includes a first drive arm 8-21 that rotates synchronously with the clutch pedal control lever 8-2. The first drive arm 8-21 is fixed to the clutch pedal control lever 8-2, and the free end of the first drive arm 8-21 is connected to a clutch control line 8-211 connected to a clutch manual control unit. By providing the clutch control line 8-211, the clutch can be manually controlled to adapt to the operation of the micro-tiller in multiple scenarios. When the road conditions are good, the operator can sit on the micro-tiller and control the movement of the micro-tiller by controlling the clutch pedal control lever 8-2. When the road conditions are dangerous, such as when the micro-tiller is being transported or used to transport goods onto a vehicle through a steep slope, on a bumpy road, or on a narrow road, the operator can get off the micro-tiller and stand on the ground to control the movement of the micro-tiller using the clutch manual control unit. This avoids the risk of the operator sitting on the micro-tiller in dangerous scenarios and causing the micro-tiller to fall, thereby improving the safety of use.

[0110] like Figure 10 As shown, the two front fenders 5-1 of this embodiment are respectively arranged on both sides of the bottom of the engine and are respectively located in front of the corresponding front running wheel fenders; each of the front fenders 5-1 is provided with a curved portion, and the curved portion is located below the engine air duct; by providing the curved portion, the air duct is partially shielded to prevent mud and water from clogging the air duct and affecting the heat dissipation effect.

[0111] Among them, each front fender 5-1 is provided with a first mounting hole 5-61 on the side close to the front traveling wheel fender, and each front fender 5-1 is provided with a second mounting hole 5-62 on the side close to the tillage mechanism connecting frame; the first mounting hole 5-61 can overlap with the original through hole on the front traveling wheel fender, and a through hole corresponding to the second mounting hole 5-62 is opened on the tillage mechanism connecting frame, so that it can be installed and fixed by bolts, and the bolts on both sides make the front fender 5-1 more stable.

[0112] Among them, the side of each front fender 5-1 close to the front running wheel fender is supported by the front running wheel fender; the front fender is supported by the front running wheel fender, making the structure more stable; among them, the side of the front fender 5-1 close to the front running wheel fender is provided with an extension part, and the extension part extends to contact one side of the front running wheel fender; the extension part is provided with a support ear, and the first mounting hole 5-61 is set on the support ear to facilitate positioning during installation.

[0113] When the traveling wheels rotate in the paddy field, muddy water is thrown out under the action of centrifugal force. By arranging the front fender 5-1 at the bottom of the engine, the muddy water splashing toward the engine is effectively intercepted, preventing the muddy water from adhering to the engine cylinder block. When cleaning, only the bottom surface of the front fender 5-1 needs to be cleaned.

[0114] like Figure 11As shown, the lampshade 6-1 includes a front lampshade 6-101 and a rear lampshade 6-102 for gathering light. In this embodiment, the front lampshade 6-101 includes a first cylinder 6-1011 and a second cylinder 6-1012 which are coaxially arranged from the inside to the outside. The first cylinder 6-1011 is transparent. An annular chuck 6-1014 is provided on the inner wall of one end of the first cylinder 6-1011 close to the headlight 6-2. The annular chuck 6-1014 is clamped to the lamp head of the headlight 6-2. The lamp head of the headlight 6-2 is located in the first cylinder 6-1011. In this embodiment, the annular chuck 6-1014 is an annular disc.

[0115] The first cylinder 6-1011 and the second cylinder 6-1012 are connected at one end away from the lamp 6-2. Figure 12 As shown, a plurality of connecting strips 6-1015 are provided circumferentially between the first cylinder 6-1011 and the second cylinder 6-1012. In this embodiment, there are five connecting strips 6-1015 in total. The second cylinder 6-1012 is provided with a plurality of through holes 6-1013 for light transmission on the outer side facing the left or right side of the four-wheel riding micro-tillage machine. In this embodiment, there are six through holes 6-1013 in total. The plurality of through holes 6-1013 are all located between two adjacent connecting strips 6-1015. When the headlight 6-2 is on for a long time, When the vehicle is in the forward direction, the first cylinder 6-1011, the second cylinder 6-1012 and the headlight 6-2 cooperate to indicate the direction of travel. The rear lampshade 6-102 is connected to the bumper of the four-wheel riding micro-tiller. The headlight 6-2 and the front lampshade 6-101 are fixedly connected to the rear lampshade 6-102 in turn. The headlight 6-2 is located inside the rear lampshade 6-102.

[0116] like Figure 13 As shown, the bumper includes a second support rod 6-3 symmetrically arranged above the generator, one end of the two second support rods 6-3 is connected to the front end of the generator on the four-wheel ride-on micro-tillage device, and the other end is connected to the rear end of the generator on the four-wheel ride-on micro-tillage device, and the end of the second support rod 6-3 close to the headlight 6-2 is provided with a second connecting plate 6-4 perpendicular to the second support rod 6-3.

[0117] In this embodiment, the second connecting plate 6-4 is welded to the second support rod 6-3. In order to ensure a stable connection, a connecting rod is conventionally provided between the two support rods. The rear lamp cover and the turn signal light need to be installed at the connection between the support rod and the connecting rod. However, in this embodiment, no connecting rod is required and they can be directly connected to the support rod, thus saving manufacturing costs while ensuring a stable connection.

[0118] In this embodiment, the rear lamp cover 6-102 is an elongated conical platform with an open end and a hollow interior. A notch 6-1021 is provided on the lower surface of the rear lamp cover 6-102 to expose the interior of the rear lamp cover 6-102. The interior of the end of the rear lamp cover 6-102 close to the headlight 6-2 is fixedly connected to the two ends of the second connecting plate 6-4 on the second support rod 6-3. In this embodiment, the two ends of the second connecting plate 6-4 are bolted to the interior of the rear lamp cover 6-102, and the interior of the end of the rear lamp cover 6-102 away from the headlight 6-2 is bolted to the second support rod 6-3.

[0119] In this embodiment, the diameter of the end of the rear lamp cover 6-102 close to the headlight 6-2 is larger than the diameter of the end of the rear lamp cover 6-102 away from the headlight 6-2. The lower surface of the end of the rear lamp cover 6-102 close to the headlight 6-2 is provided with a second card groove 6-1022. The inner surface of the second card groove 6-1022 is a curved surface. The second card groove 6-1022 can be connected with the second support rod 6-3. In this embodiment, the second support rod 6-3 fits the curved surface.

[0120] In this embodiment, the four-wheeled riding micro-tillage machine equipment includes a front frame for setting a steering part and a rear frame for setting a rear implement. A steering transmission part is provided between the front frame and the rear frame. The steering transmission part includes a rotating shaft. The two ends of the transmission shaft are respectively connected to the front frame and the rear frame through universal joints. The seat is installed on the rear frame, which can prevent the seat of the four-wheeled riding micro-tillage machine equipment from deflecting relative to the rear frame during the steering process, and further prevent the distance between the seat and the operating handle from changing, thereby ensuring the convenience of operating the rear implement.

[0121] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A four-wheeled riding micro-tillage machine, characterized by: It adopts single power drive or hybrid power drive, including a front gearbox, a rear gearbox, a front axle, a rear axle, a steering wheel, a steering assembly, a handbrake assembly, a clutch-brake linkage structure, and lights and seats symmetrically arranged on both sides of the front of the four-wheel riding micro-tillage equipment; The power output of the front gearbox drives the front axle, and the power output of the rear gearbox drives the rear axle. The front axle or the rear axle can be detachably mounted with tillage implements or travel wheels. The front gearbox and the rear gearbox can be coordinated to switch to a multi-speed four-wheel drive travel mode, a variety of four-wheel drive tillage modes, or a multi-speed two-wheel drive travel mode. The steering wheel is used to control the steering of the four-wheel ride-on micro-tiller and reserves operating space for the throttle switch and control buttons; The steering assembly is used to drive the four-wheel riding micro-tillage machine to steer; The handbrake assembly is used to control the brakes of the four-wheel riding micro-tillage machine; The clutch-brake linkage structure is used to control the linkage of the brake and the clutch. When braking, the clutch is automatically disconnected, and when the clutch is engaged, the brake is automatically released. When the headlight is on, it is used for front lighting; when the headlight is flashing, it is used for indicating the direction of travel; The seat is used for the driver to sit on and is arranged on the rear frame.

2. The four-wheeled riding micro-tillage machine according to claim 1, characterized in that: It adopts internal combustion engine and / or electric drive, including internal combustion engine, motor, battery assembly and front gearbox. The battery assembly supplies power to the motor, and the power generated by the motor is transmitted to the front gearbox. The internal combustion engine transmits power to the front gearbox. When the battery assembly needs to be charged, it can simultaneously drive the rotor of the magnetic motor to rotate around the stator to generate current to charge the battery.

3. The four-wheeled riding micro-tillage machine according to claim 1, characterized in that: The rear gearbox includes a first transmission shaft, a second transmission shaft and a first-stage speed change mechanism, and a third transmission shaft and a second-stage speed change mechanism. The first-stage speed change mechanism can switch between multiple first-stage gears to change the transmission ratio between the first transmission shaft and the second transmission shaft. The second-stage speed change mechanism can switch between multiple second-stage gears to change the transmission ratio between the second transmission shaft and the third transmission shaft.

4. The four-wheeled riding micro-tillage machine according to claim 1, characterized in that: The steering wheel includes a ring-shaped circular tube, a plurality of circumferentially spaced inclined and inwardly bent support rods, one end of each of the support rods is connected to the circular tube, and the inwardly bent support rods cooperate with the circular tube to reserve operating space for components on the four-wheel ride-on micro-tillage machine.

5. The four-wheeled riding micro-tillage machine according to claim 1, characterized in that: The steering assembly includes a first steering member connected to the ends of multiple support rods and a second steering member engaged with the first steering member. When the first steering member rotates circumferentially in the horizontal plane, the first steering member drives the second steering member to rotate circumferentially in the vertical plane. The second steering member is fan-shaped and drives the four-wheel riding micro-tiller to steer.

6. The four-wheeled riding micro-tillage machine according to claim 1, characterized in that: The handbrake assembly includes a foot brake pedal and a handbrake control part located below the steering wheel and on the side of the steering assembly. After the foot brake pedal is stepped on, the handbrake control part can be operated to prevent the foot brake pedal from rebounding. The handbrake control part includes a rotating rod and a limit block. The rotating rod is provided with a torsion spring. The limit block is fixedly connected to the rotating rod. After the rotating rod is rotated, the torsion spring is compressed, and the limit block and the stepped on foot brake pedal limit each other.

7. The four-wheel ride-on micro-tillage machine according to claim 1, characterized in that: The clutch-brake linkage structure includes a first drive component for controlling the brake, a second drive component for controlling the clutch, and a linkage control component for linkage control of the first drive component and the second drive component. The linkage control component can control the second drive component to disengage the clutch when the first drive component controls the brake, and the linkage control component can control the first drive component to release the brake when the second drive component engages the clutch.

8. The four-wheeled riding micro-tillage machine according to claim 7, characterized in that: The first drive assembly includes a brake pedal control lever for controlling the brake, one end of which is fixed with a rotating shaft rotatably connected to the frame; the second drive assembly includes a clutch pedal control lever for controlling the clutch, one end of which is rotatably connected to the rotating shaft, and a linkage control assembly can cause the clutch pedal control lever and the brake pedal control lever to rotate in opposite directions; The linkage control assembly includes a connecting rod, a third driving arm fixed to the rotating shaft, and a rotating plate fixed to the clutch fork shaft. The rotating plate includes a first arm and a second arm extending outward. One end of the connecting rod is hinged to the first arm, and the other end of the connecting rod is rotatably connected to one end of the third driving arm. The clutch foot control lever is connected to the second arm, and the clutch foot control lever can drive the clutch fork shaft.

9. The four-wheel ride-on micro-tillage machine according to claim 1, characterized in that: It also includes a lampshade that is mounted outside the headlight, and the lampshade includes a front lampshade for gathering light. The front lampshade is provided with a plurality of through holes on the outside facing the left or right side of the four-wheel riding micro-tiller. When the headlight is on, the headlight cover and the headlight are used together for front lighting. When the headlight flashes, the headlight cover, the through holes and the headlight are used together to indicate the direction.

10. The four-wheel ride-on micro-tillage machine according to claim 1, characterized in that: It also includes a front fender for preventing mud from adhering to the engine. There are two front fenders, which are respectively arranged on both sides of the bottom of the engine and are respectively located in front of the corresponding front road wheel fenders.

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