CN218868634U - Four-wheel miniature tillage equipment - Google Patents

Abstract

The application discloses four-wheel mini-type farming equipment, which further comprises a front gearbox, a rear gearbox, a front wheel shaft, a rear wheel shaft, farming implements and walking wheels, wherein a power output end of a power assembly is in transmission connection with the front gearbox, and the front gearbox is in transmission connection with the rear gearbox through a steering transmission part; the power output of the front gearbox drives a front wheel shaft, the power output of the rear gearbox drives a rear wheel shaft, and tillage implements or travelling wheels can be detachably mounted on the front wheel shaft or the rear wheel shaft. The tillage equipment can be used for tillage by mounting the front wheel shaft and/or the rear wheel shaft on tillage implements, the tillage process does not need to be held by hands, the labor intensity is low, the front wheel shaft and/or the rear wheel shaft is/are mounted with walking wheels for walking, and the tillage equipment is suitable for various tillage and walking requirements, is also a miniature tillage equipment, and further meets the characteristics of low price, light weight and small size.

Description

Four-wheel miniature tillage equipment

Technical Field

The utility model relates to the technical field of agricultural machinery, concretely relates to miniature farming equipment of four-wheel.

Background

Both micro-tillers and tractors are agricultural machinery that can be used for farming.

The mini-tiller uses a small diesel engine or a gasoline engine as power, has the characteristics of light weight, small volume, simple structure and the like, and is widely applicable to dry lands, paddy fields, orchards and the like in plains, mountainous areas and hills. The use group of the mini-tiller is mainly farmers, the mini-tiller is often used in mountainous areas and hilly areas, the price is low, the weight is light, and the size is small, the mainstream mini-tiller in the market at present mainly adopts a hand-held mini-tiller, the existing mini-tiller comprises a rack, a handrail frame, a power part, a gearbox and the like, the power part transmits torque to the gearbox for speed change through a clutch or a belt, and the gearbox transmits the torque to a driving wheel shaft after speed change so as to drive tillage implements, such as rotary tillage, weeding, ditching and the like. The mini-tiller has high requirements on operators, is relatively difficult to operate, needs to stabilize the handrail and apply force downwards in the tilling process, can generate large vibration in the tilling process, needs to be operated by the operators through the handrail in the steering process, has high requirements on the operators in the tilling and steering processes, and has high labor intensity. In addition, the gear control is mainly performed on the gearbox through a rod type by the existing micro-tillage machine, the tillage scene is mainly considered, the applicable scene is single, the power is not strong, and the problems of slippage, insufficient power and the like easily occur to the micro-tillage machine in the process of dragging goods or climbing a steep slope.

The agricultural tractor is a self-propelled power machine used for dragging and driving the operation machine to complete various mobile operations, is connected with the agricultural machine or a trailer in a trailing mode for farming, harvesting or other similar tasks, is large in size and heavy in weight, is generally not suitable for transferring and operating in mountainous areas and hills, is too high in purchase cost and poor in economical efficiency, and has certain limitation.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a four-wheel miniature tillage equipment which can be used for tillage by mounting tillage machines on a front wheel shaft and/or a rear wheel shaft, wherein the tillage process is free from hands and low in labor intensity, the front wheel shaft and/or the rear wheel shaft are mounted with walking wheels for walking, and the tillage equipment is suitable for various tillage and walking requirements, is also a miniature tillage equipment and further meets the characteristics of low price, light weight and small volume.

The utility model discloses the technical scheme who adopts as follows:

a four-wheel miniature tillage device comprises a power assembly, a front gearbox, a rear gearbox, a front wheel shaft, a rear wheel shaft, a tillage implement and walking wheels, wherein a power output end of the power assembly is in transmission connection with the front gearbox;

the power output of the front gearbox drives a front wheel shaft, the power output of the rear gearbox drives a rear wheel shaft, and tillage implements or travelling wheels can be detachably mounted on the front wheel shaft or the rear wheel shaft;

the steering mechanism is also provided with a driver seat and controls the steering of the four-wheel mini-type farming equipment;

the front gearbox and the rear gearbox can be switched to a multi-gear four-wheel drive walking mode, a multi-four-wheel drive farming mode or a multi-gear two-wheel drive walking mode in a matched mode.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the utility model relates to a miniature farming equipment of four-wheel, when farming, through installing front axle and/or rear axle and go up farming machines, the shaft installation walking wheel of not installing farming machines, power assembly's power passes through preceding gearbox, back gearbox, exports power respectively to front axle, rear axle, power assembly drive during the farming and the weight that cooperation farming equipment pushed down, just can drive farming machines and cultivate, operating personnel need not hand in the farming process, also need not downward application of force, greatly reduced intensity of labour.

2. The applicant carries out product research and development in the field of farming equipment for a long time, and finds that the four-wheel miniature farming equipment can realize that the front wheel shaft and/or the rear wheel shaft are/is provided with farming implements, the farming depth of the farming equipment adopting the structure can exceed 80mm, the farming effect can completely reach or even be superior to that of the existing miniature farming machine, and the front wheel shaft and the rear wheel shaft can be replaced by the travelling wheels during travelling. Compared with the existing tractor which adopts a dragging mode to connect with tillage machines for tillage, the weight, the volume and the price can be reduced by more than 50 percent, various scenes required by tillage and walking are met, the functions are complete, and the advantages are obvious.

As the utility model discloses preferred embodiment, preceding gearbox sets up two leading keeping off that gos forward at least, and the back gearbox sets up two rearmounted keeping off that gos forward at least, preceding gearbox, back gearbox can cooperate to switch to keeping off four-wheel drive walking mode, multiple four-wheel drive farming mode or keeping off two-wheel drive walking mode of keeping off at most.

When the scheme is adopted, the farming and walking states are all provided with multi-gear setting. The tillage state is that tillage implements are installed on a front wheel shaft, when walking wheels are installed on a rear wheel shaft (a four-wheel drive tillage mode), the rotating speeds of the front wheel shaft and the rear wheel shaft are respectively controlled by switching gears of a front gear box and a rear gear box, the rotating speed of the tillage implements of the front wheel shaft is controlled by the front gear box, and the walking speed of the walking wheels is controlled by the rear gear box, so that a better tillage effect is realized, and soft soil can be tilled by adopting a high gear position and hard soil can be tilled by adopting a low gear position by switching a front forward gear position of the front gear box; when the walking vehicle is in a walking state, the front wheels and the rear wheels are replaced by walking wheels, walking in a four-wheel driving walking mode (the front gearbox and the rear gearbox output power to the walking wheels) or a two-wheel driving walking mode (the front gearbox outputs power to the walking wheels and the rear gearbox adopts a neutral gear) is realized by switching gears of the front gearbox and the rear gearbox, and walking is more flexible by switching a front advancing gear of the front gearbox in the four-wheel driving walking mode or the two-wheel driving walking mode and adopting low-speed or high-speed walking. When going uphill or pulling goods, the four-wheel drive walking mode can be selected to be switched to, the farming equipment has strong driving performance, tires can be prevented from slipping, and the two-wheel drive walking mode can be adopted when the power requirement is low, such as on the flat ground without pulling goods, so that the energy consumption can be further saved.

As the utility model discloses preferred embodiment is provided with articulated connecting portion between the casing of back gearbox and preceding gearbox, and the gearbox rotates at the horizontal direction before the back gearbox can be relative. This scheme is provided with articulated connecting portion between the casing of gearbox and preceding gearbox in back, through the cooperation that gearbox transmission connected mode and articulated connecting portion set up around, can realize nimble function of turning to through simple, ingenious design, can be very big reduce the volume and the weight of farming equipment complete machine, reduce cost simultaneously.

As a preferred embodiment of the present invention, the front transmission case includes a front housing, a front transmission assembly and a front control assembly, the front transmission assembly includes a front power input shaft, a front intermediate shaft, a reverse shaft and a front power output shaft mounted in the front housing, and the front power input shaft is provided with an input shaft normally meshed gear;

the front intermediate shaft is provided with a triple gear and a front intermediate shaft normally meshed gear meshed with the input shaft normally meshed gear, the triple gear is connected with the front intermediate shaft in a sliding manner, and the triple gear comprises a front intermediate shaft first-gear, a front intermediate shaft second-gear and a front intermediate shaft third-gear;

a front output shaft first-gear, a front output shaft second-gear and a front output shaft third-gear are arranged on the front power output shaft;

the reverse gear shaft is provided with a reverse gear and a reverse gear idle wheel, and the reverse gear idle wheel is meshed with a first gear of the front output shaft;

when the triple gear slides, the first gear of the front intermediate shaft is engaged with the first gear of the front output shaft in a switchable manner, or the second gear of the front intermediate shaft is engaged with the second gear of the front output shaft, or the front intermediate shaft three-gear is meshed with the front output shaft three-gear, or the front intermediate shaft three-gear is meshed with the reverse gear, or both the front intermediate shaft three-gear and the reverse gear are not meshed;

the front control assembly is used for controlling the triple gear to slide and shift gears.

According to the scheme, the front gearbox is provided with three front advancing gears, when the cultivator is used for cultivating or walking, the power output of the front gearbox drives cultivating machines or walking wheels, and the triple gear can be controlled to slide to a first gear of the front intermediate shaft and be meshed with a first gear of a front output shaft through the front control assembly, or a second gear of the front intermediate shaft and be meshed with a second gear of the front output shaft, or a third gear of the front intermediate shaft and be meshed with a third gear of the front output shaft (corresponding to first gear, second gear and third gear respectively). The multi-gear arrangement is adopted, for example, during cultivation, the power of the front gearbox is output to a cultivation machine, and the first gear, the second gear and the third gear can be respectively used for cultivating hard soil, harder soil and soft soil; when the walking machine walks, the first gear, the second gear and the third gear are respectively used for controlling the walking speed, so that the walking machine is rich in applicable scenes and meets various farming and walking requirements.

As a preferred embodiment of the present invention, the rear transmission case includes a rear housing, a rear transmission assembly and a rear control assembly, the rear transmission assembly includes a rear power input shaft, a rear intermediate shaft and a reduction gear set mounted in the rear housing, the rear power input shaft is slidably connected with a dual gear, and the dual gear includes a rear input shaft first gear and a rear input shaft second gear;

a rear intermediate shaft reduction gear, a rear intermediate shaft first gear and a rear intermediate shaft second gear are arranged on the rear intermediate shaft;

when the dual gears slide, the dual gears can be switched to be meshed with a first-gear of the rear input shaft and a first-gear of the rear intermediate shaft, or meshed with a second-gear of the rear intermediate shaft, or not meshed;

the rear intermediate shaft reduction gear is in transmission connection with a reduction gear set, and the reduction gear set outputs to a rear wheel shaft;

the rear control assembly is used for controlling the dual gear to slide and shift gears.

In the scheme, the rear gearbox is provided with two rear advancing gears (specifically a low-speed farming gear and a high-speed walking gear), when the sliding switching of the dual gears is controlled by the rear control assembly to mesh the rear input shaft first-gear and the rear intermediate shaft first-gear, the dual gears are the low-speed farming gears, the rear gearbox is matched with the front gearbox, the power of the rear gearbox is used for driving the walking wheels to walk, the power of the front gearbox is used for driving the farming machine to cultivate, and the two gears are matched together to realize better farming; the rear control assembly controls the dual gears to slide and switch to a high-speed walking gear when a rear input shaft secondary gear is meshed with a rear intermediate shaft secondary gear, and the power of the rear gearbox and the power of the front gearbox are both used for driving walking wheels to walk at the moment, so that the four-wheel drive structure is adopted, and the four-wheel drive structure can be used for dragging goods or climbing slopes; when the dual gear is controlled to be switched to a non-meshing state of the dual gear and a gear on the rear intermediate shaft when sliding through the rear control assembly, the rear gearbox is in a neutral state, the power of the front gearbox is used for driving the traveling wheels to travel, and the rear gearbox is of a two-wheel driving structure and can be used in the scene of not pulling goods and traveling on flat ground. The rear gearbox structure adopting the scheme can be suitable for application in various occasions such as farming, cargo pulling, uphill, flat ground and the like, and the power output is richer and more flexible.

As a preferred embodiment of the utility model, the tilling width of the tilling implement after being arranged with the front wheel shaft or the rear wheel shaft is 0.8-1.4 m. The tilling width is designed within 0.8-1.4 m, and firstly, the tilling width is matched with the power of a power assembly; the second is the tilling width design within the range, which can ensure that the tilling width of the four-wheel mini-tiller is always larger than the whole width of the rear wheel and the rear wheel shaft when the tiller is used, is not easy to turn over no matter in turning or sloping fields, can adapt to most sloping field terrains, and has wider adaptability.

As the utility model discloses preferred embodiment, the steering drive portion is the transmission shaft, the transmission shaft is including preceding universal joint, first connecting axle, the back universal joint that connects gradually, preceding universal joint or back universal joint and first connecting axle sliding connection.

The transmission portion that turns to in this scheme is the transmission shaft to adopt preceding universal joint, first connecting shaft, the back universal joint that connects gradually, through simple ingenious structure, can transmit the rear axle in the time of power take off to the front axle, realize the miniature farming equipment four-wheel drive's of four-wheel function, this transmission shaft structure can also realize the effect that turns to in the time of transmitting power moreover. The structure of transmission shaft adoption this scheme, reduction cost that can be very big, this simple structure moreover can let the structure of complete machine simple compactness, light in weight and small. In addition, when the transmission mechanism is applied to four-wheel miniature tillage equipment, in the steering process, the inventor finds that the distance between the front wheel shaft and the rear wheel shaft of the tillage equipment can be changed, and when the front universal joint or the rear universal joint is in sliding connection with the first connecting shaft, a certain degree of freedom can be provided for the distance change between the front wheel shaft and the rear wheel shaft of the tillage equipment for compensation, so that the service life of the tillage equipment can be prolonged.

As the preferred embodiment of the utility model, preceding universal joint includes the front cross axle, and back universal joint includes the back cross axle, and the diameter scope of front cross axle, back cross axle is 10-20mm. By adopting the front cross shaft and the rear cross shaft with the diameter ranges, on one hand, the strength requirement of power transmission can be completely met, and on the other hand, the comprehensive performance in the aspects of cost, weight, volume and the like is better.

As the utility model discloses preferred embodiment, the pin joint of articulated connecting portion is located the regional scope between preceding universal joint, the back universal joint, and the gearbox rotates at the horizontal direction before back gearbox relatively. The back gearbox is provided with articulated connecting portion with preceding gearbox, and the position of the pin joint of articulated connecting portion sets up according to above-mentioned requirement moreover, and the structure setting of universal joint, first connecting axle, back universal joint plays the effect that turns to jointly before the cooperation, can turn to by simple effectual realization bowing.

As a preferred embodiment of the present invention, the distance between the hinge point of the hinge connection portion and the front gimbal is less than or equal to 2/3 of the total distance between the front gimbal and the rear gimbal. In this scheme, the inventor discovers that the pin joint setting of articulated connecting portion is in above-mentioned within range, and the angle that turns to can reach 25-40 degrees, on the one hand, realizes turning to in situ in 2 meters, turns to steadily, can realize turning to in the minizone, and on the other hand, through controlling above-mentioned suitable angle that turns to, can also prevent to turn to the in-process potential safety hazards such as turning on one's side, not only satisfies daily use completely and turns to the demand, the guarantee turns to the safety and stability of process moreover.

As the utility model discloses preferred embodiment, articulated connecting portion are including all cladding steering structure spare, the protective body outside the transmission shaft, steering structure spare one side is connected with the casing of preceding gearbox, and it is articulated with protective body one end to turn to the structure spare opposite side, the protective body other end is connected with the casing of back gearbox, the protective body turns to the structure spare relatively and can rotate at the horizontal direction. In this scheme, on the one hand, turn to the structure, the protective body cladding is outside the transmission shaft, can prevent effectively that operating personnel from being drawn into and causing the potential safety hazard, perhaps have other foreign matters to be drawn into and construct to damage the transmission, on the other hand, the protective body through with turn to the articulated design of structure, the structure setting of universal joint, first connecting shaft, back universal joint before the cooperation plays the effect that turns to jointly, can realize more stable turning to, the wholeness is better, and ensures the flexibility that turns to.

As the utility model discloses preferred embodiment, turn to the structure and include two mounting panels and two connecting plates, two mounting panels are connected with the casing both sides of preceding gearbox respectively, and two connecting plates are connected between two mounting panels, the upper and lower side lateral wall of the protection body is articulated with two connecting plates respectively. The above-mentioned structure of articulated connecting portion this scheme of adoption turns to the stable in structure of structure self, and the upper and lower lateral wall that adopts the protective body moreover is also more stable with two connecting plate articulated structures respectively.

As the utility model discloses preferred embodiment still is equipped with driver's seat and support frame, support frame one end is connected with preceding gearbox, and the support frame other end extends to the miniature farming equipment rear portion of four-wheel, driver's seat installs the top that is located the miniature farming equipment rear portion of four-wheel at the support frame. In this scheme, the driver's seat passes through the support frame to be connected in the front on the gearbox, and operating personnel is more stable at the driving process, especially turns to the in-process, and the gearbox can take place to rotate before the back gearbox is relative, and the relative preceding gearbox in position of driver's seat is unchangeable this moment, and operating personnel driving process is safer.

As the utility model discloses preferred embodiment still includes steering mechanism, steering mechanism includes steering wheel, connecting axle, connecting rod and pull rod, the steering wheel is connected with the connecting axle transmission, and connecting rod one end is connected on the connecting axle, pull rod one end is articulated with the connecting rod other end, and the pull rod other end is used for the pulling back gearbox to rotate. In this scheme, through rotating the steering wheel, the drive connecting axle rotates, and the connecting axle drives the connecting rod swing, and the connecting rod passes through the pull rod pulling back gearbox and rotates, just can realize farming equipment bending and turn to this moment, and operating personnel only need just can turn to through rotating the steering wheel, turns to the degree of difficulty greatly reduced of operation.

As the preferred embodiment of the utility model, the four-wheel drive farming mode adopts the front wheel axle to install the farming machine, and when the rear wheel axle is installed with the walking wheel, the range of the rotating speed ratio of the front gearbox output to the front wheel axle and the rear gearbox output to the rear wheel axle is 4.5-8:1. During farming, the front wheel shaft is provided with farming implements, the rear wheel shaft is provided with traveling wheels, the speed ratio range before and after farming is controlled within the range, the traveling wheels are matched with the farming implements, the traveling wheels are used for propelling, the farming implements are used for farming, and the optimal propelling speed is matched with the farming speed, so that all farming in place can be realized in a walking area, and the ideal farming depth is achieved.

As the preferred embodiment of the utility model, the power assembly is a single-cylinder air-cooled gasoline engine or a single-cylinder air-cooled diesel engine, and the power range is 4-9.2KW. When power assembly power is less than 4KW, be difficult to provide sufficient power for walking wheel and/tillage machines, power assembly weight is relevant with power, if power assembly power is greater than 9.2KW, then can be because of overweight, and can't be applicable to this four-wheel miniature farming equipment, what this four-wheel miniature farming equipment pursued is that to plough the machine than hand-held type declining more comfortable, it is more nimble stable to turn to, and farming efficiency is higher, and compare in large tractor possess again the price low, light in weight, small, be applicable to the operation of multiple topography such as mountain region, hillside, hills more.

As a preferable embodiment of the utility model, the utility model also comprises a lifting support structure used for lifting or lowering the four-wheel mini-tiller. When the four-wheel micro tillage equipment is used for tillage, tillage tools need to be replaced on the front wheel shaft and/or the rear wheel shaft, and the tillage tools need to be replaced by the walking wheels when the four-wheel micro tillage equipment is used for walking, so that the front part or the rear part of the four-wheel micro tillage equipment can be lifted up by using the lifting support structure for replacement or maintenance operation when the four-wheel micro tillage equipment is replaced or needs to be maintained.

As a preferred embodiment of the present invention, the elevating support structure includes a support rod and a connection sleeve, the connection sleeve may be connected with the four-wheeled mini farming equipment, the support rod includes an upper rod and a lower rod, the diameter of the lower rod is greater than the diameter of the upper rod, the connection of the upper rod and the lower rod has a step, the connection sleeve is screwed on the upper rod, the upper rod between the end of the connection sleeve and the step becomes an axial spacing section when placing the support component.

When the scheme is adopted, the four-wheel micro farming equipment can be lifted or lowered by connecting the connecting sleeve with the four-wheel micro farming equipment and rotating the supporting rod in the forward direction or the reverse direction; in addition, because the upper boom and the lower beam junction have the step, so the upper boom between the tip of adapter sleeve and the step can form the spacing section of axial when placing supporting component, like this when not using supporting component, can deposit supporting component, through setting up with spacing section assorted structure of axial, can prevent supporting component along axial slip or landing, thereby be convenient for deposit, this design, the adapter sleeve not only plays the effect similar to screw nut, but also has played the effect of axial locating part.

As a preferred embodiment of the utility model, the four-wheel mini-tiller has the weight of 150-300Kg, the length of 1.2-2 m and the width of 0.5-0.9 m. The miniature farming equipment of four-wheel of this kind of weight, length and width of this scheme possesses light in weight simultaneously, and is small, characteristics low in price moreover, and above-mentioned weight configuration can ensure the miniature farming equipment of four-wheel and carry out the farming through directly installing the farming machines on front axle or rear axle in addition and use, compares present mainstream hand machine of ploughing a little, can also greatly reduced intensity of labour, has very big popularization and application prospect.

As the utility model discloses preferred embodiment, still including setting up in the trailing connecting piece at the miniature farming equipment rear portion of four-wheel, trailing connecting piece can dismantle and connect rearmounted transmission case or the rearmounted machines of second or farming machines, the transmission of rearmounted transmission case is connected with first rearmounted farming machines.

In the scheme, the towing connecting piece is arranged to place tillage implements when not in tillage, and simultaneously, the towing connecting piece can be used for installing two towing tillage structures based on different requirements, wherein one is directly connected with a second rear tillage implement, and the second rear implement does not need to rotate and comprises but is not limited to a ridger, a backfilling knife, a fertilizing box, a plough share and the like; the other type is that the rear transmission case is arranged to drive a first rear tillage implement to operate, wherein the first rear tillage implement is a rotary operation implement and comprises but is not limited to a rotary blade, a weeding wheel and the like, and the rear transmission case is detachable, so that when the first rear tillage implement is not required to be pulled, the rear transmission case can be integrally detached, and other use scenes, such as pulling, of the first rear tillage implement is not required to be rotated. The rear transmission case is in transmission connection with the rear transmission case of the four-wheel micro farming equipment, power is transmitted to the rear transmission case through the rear transmission case without additional arrangement of power, and therefore the four-wheel micro farming equipment is enabled to be light in weight and lighter in whole.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is another schematic structural diagram of embodiment 1 of the present invention;

fig. 3 is a schematic structural view of a steering transmission part and front and rear transmission parts in embodiment 1 of the present invention;

fig. 4 is a schematic structural view of the front transmission case in embodiment 1 of the present invention;

fig. 5 is a schematic structural view of a front transmission and a front output assembly in embodiment 1 of the present invention;

fig. 6 is a schematic structural view of a rear transmission and a rear output assembly in embodiment 1 of the present invention;

fig. 7 is a schematic structural view of a transmission shaft portion in embodiment 1 of the present invention;

fig. 8 is a schematic structural view of a front and rear transmission case and a hinge connection portion according to embodiment 1 of the present invention;

fig. 9 is a schematic structural view of the rear transmission case in embodiment 2 of the present invention;

fig. 10 is a schematic structural view of a part of a trailing connecting piece in embodiment 2 of the present invention;

fig. 11 is a schematic structural view of a part of a tool suspension assembly according to embodiment 2 of the present invention;

fig. 12 is a schematic structural view of a lifting support structure part in embodiment 1 of the present invention;

fig. 13 is a schematic structural view of the placement member and the limiting member according to embodiment 1 of the present invention.

The reference numerals include: a power assembly 1, a front gear box 2, a front shell 2-1, a front transmission component 2-2, a front power input shaft 2-21, an input shaft normally meshed gear 2-211, a front middle shaft 2-22, a front middle shaft normally meshed gear 2-221, a front middle shaft first gear 2-222, a front middle shaft second gear 2-223, a front middle shaft third gear 2-224, a reverse gear 2-23, a reverse gear 2-231, a reverse gear idler 2-232, a front power output shaft 2-24, a front output shaft first gear 2-241, a front output shaft second gear 2-242, a front output shaft third gear 2-243, a front gear shifting lever 2-31, a rear gear box 3, a rear shell 3-1, a rear transmission component 3-2, a rear power input shaft 3-21, a rear input shaft first gear 3-211, a rear input shaft first gear 3-243, a rear gear 3-31, a front gear, A rear input shaft two-gear 3-212, a rear middle shaft 3-22, a rear middle shaft reduction gear 3-221, a rear middle shaft one-gear 3-222, a rear middle shaft two-gear 3-223, a reduction gear set 3-23, a rear control component 3-3, a rear shift lever 3-31, a rear shifting fork 3-32, a rear shifting fork 3-33, a rear swing arm 3-34, a front wheel shaft 4, a first bevel gear transmission structure 4-1, a second connecting shaft 4-2, a second bevel gear transmission structure 4-3, a rear wheel shaft 5, a third connecting shaft 5-1, a third bevel gear transmission structure 5-2, a tillage machine 6, a walking wheel 7, a transmission shaft 8, a front universal joint 8-1, a front cross shaft 8-11, a first connecting shaft 8-2, a rear universal joint 8-3, 8-31 parts of rear cross shaft, 9-1 parts of hinged connection parts, 9-1 parts of connection plates, 9-2 parts of protective bodies, 9-21 parts of hinged parts, 9-3 parts of mounting plates, 10 parts of driver's seats, 10-1 parts of support frames, 11 parts of steering mechanisms, 11-1 parts of steering wheels, 11-2 parts of connection shafts, 11-3 parts of connecting rods, 11-4 parts of pull rods, 12-11 parts of first transmission shafts, 12-111 parts of first transmission wheels, 12-112 parts of second transmission gears, 12-113 parts of third transmission gears, 12-12 parts of second transmission shafts, 12-121 parts of fourth transmission gears, 12-122 parts of fifth transmission gears, 12-3 parts of rear output shafts, 12-31 parts of sixth transmission gears, 12-32 parts of seventh transmission gears, 13-32 parts of trailing connection parts, 13-1 parts of fixing parts, 13-2 parts of first connection parts, 13-21 parts of first bottom plates, 13-21 parts of trailing connection parts of rear output shafts, and parts of rear transmission shafts, The device comprises a first bending plate 13-22, an implement suspension assembly 14, a second bottom plate 14-11, a second bending plate 14-12, a tilling blade connecting piece 14-2, a supporting rod 15-1, an upper rod 15-11, a lower rod 15-12, a connecting sleeve 15-2, an axial limiting section 15-3, a placing piece 16-1, a limiting piece 16-2 and a first threaded hole 16-21.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

In the description of the present application, the terms "first," "second," "front," "back," and the like are used solely for the purpose of describing the application and for simplicity of description, and do not indicate or imply that the structures referred to must be in a particular orientation, constructed and operated in a particular orientation, and thus should not be considered limiting of the application.

Example 1

As shown in fig. 1, fig. 2 and fig. 3, the present embodiment discloses a four-wheel mini-tiller, which includes a power assembly 1, in the present embodiment, the power assembly 1 is a single-cylinder air-cooled gasoline engine or a single-cylinder air-cooled diesel engine, the power range is 4-9.2KW, the single-cylinder air-cooled gasoline engine or the single-cylinder air-cooled diesel engine has the advantages of light weight, small size, and convenient maintenance, when the power of the power assembly 1 is less than 4KW, the walking wheels 7 and/or the tiller 6 cannot be driven, the weight and the size of the power assembly 1 are related to the power, if the power of the power assembly 1 is greater than 9.2KW, the size and the weight exceed the standard, and the four-wheel mini-tiller cannot be applied to the four-wheel mini-tiller.

The power output end of the power assembly 1 is in transmission connection with the front gearbox 2, the front gearbox 2 is in transmission connection with the rear gearbox 3 through a steering transmission part, a hinged connection part 9 is arranged between the rear gearbox 3 and a shell of the front gearbox 2, and the rear gearbox 3 can rotate in the horizontal direction relative to the front gearbox 2. The power output of the front gearbox 2 drives a front wheel shaft 4, the power output of the rear gearbox 3 drives a rear wheel shaft 5, tillage implements 6 or walking wheels 7 are detachably mounted on the front wheel shaft 4 or the rear wheel shaft 5 by bolts or pin shafts, the tillage implements 6 preferably use rotary tillage blade assemblies or weeding wheels, and the tillage width of the tillage implements 6 after being mounted with the front wheel shaft 4 or the rear wheel shaft 5 is designed to be 0.8-1.4 m.

The front gearbox 2 is at least provided with two front advancing gears, the rear gearbox 3 is at least provided with two rear advancing gears, and the front gearbox 2 and the rear gearbox 3 can be matched and switched to a multi-gear four-wheel drive walking mode, a plurality of four-wheel drive farming modes or a multi-gear two-wheel drive walking mode. As shown in fig. 4 and 5, in the present embodiment, the front gearbox 2 comprises a front housing 2-1, a front transmission assembly 2-2 and a front steering assembly, the front transmission assembly 2-2 comprises a front power input shaft 2-21, a front intermediate shaft 2-22, a reverse gear shaft 2-23 and a front power output shaft 2-24 which are arranged in the front housing 2-1, and an input shaft constant mesh gear 2-211 is arranged on the front power input shaft 2-21; the front intermediate shaft 2-22 is provided with a triple gear and a front intermediate shaft normally meshed gear 2-221 meshed with the input shaft normally meshed gear 2-211, the triple gear is connected with the front intermediate shaft 2-22 in a sliding mode, and the triple gear comprises a front intermediate shaft first gear 2-222, a front intermediate shaft second gear 2-223 and a front intermediate shaft third gear 2-224; the front power output shaft 2-24 is provided with a front output shaft first gear 2-241, a front output shaft second gear 2-242 and a front output shaft third gear 2-243; the reverse gear shaft 2-23 is provided with a reverse gear 2-231 and a reverse gear idler 2-232, and the reverse gear idler 2-232 is meshed with the front output shaft first gear 2-241; when the triple gear slides, the front intermediate shaft first gear 2-222 is engaged with the front output shaft first gear 2-241 or the front intermediate shaft second gear 2-223 is engaged with the front output shaft second gear 2-242, or the front intermediate shaft three-gear 2-224 is meshed with the front output shaft three-gear 2-243, or the front intermediate shaft three-gear 2-224 is meshed with the reverse gear 2-231, or neither is meshed; the front control assembly comprises front gear shifting rods 2-31, a front swing arm and a front shifting fork arranged on the front swing arm, wherein the front gear shifting rods 2-31 are used for driving the front swing arm to swing, and the front shifting fork is clamped in a shifting fork groove of the triple gear. The front transmission assembly 2-2 in this embodiment is structured to have three forward gears.

In some other embodiments, the front transmission case 2 may also be provided with other numbers of forward gears, for example, two forward gears and four forward gears, and the setting manner of the other numbers of forward gears may be the gear setting manner in the prior art, which is not described herein again.

As shown in fig. 6, in the present embodiment, the rear gearbox 3 includes a rear housing 3-1, a rear transmission assembly 3-2 and a rear operating assembly 3-3, the rear transmission assembly 3-2 includes a rear power input shaft 3-21, a rear intermediate shaft 3-22 and a reduction gear set 3-23 mounted in the rear housing 3-1, a coupling gear is slidably connected to the rear power input shaft 3-21, and the coupling gear includes a rear input shaft first gear 3-211 and a rear input shaft second gear 3-212; rear intermediate shaft reduction gears 3-221, rear intermediate shaft first gear gears 3-222 and rear intermediate shaft second gear gears 3-223 are arranged on the rear intermediate shafts 3-22; when the dual gears slide, the dual gears can be switched to be meshed with the rear input shaft first gear 3-211 and the rear intermediate shaft first gear 3-222, or meshed with the rear input shaft second gear 3-212 and the rear intermediate shaft second gear 3-223, or not meshed; the rear intermediate shaft reduction gears 3-221 are in transmission connection with the reduction gear sets 3-23, and the reduction gear sets 3-23 output to the rear wheel shaft 5; the rear control assembly 3-3 comprises a rear gear shift lever 3-31, a rear swing arm 3-34, a rear fork shaft 3-32 and a rear fork 3-33 slidably mounted on the rear fork shaft 3-32, the rear gear shift lever 3-31 is used for driving the rear swing arm 3-34 to swing, the rear swing arm 3-34 is used for driving the rear fork 3-33 to slide on the rear fork shaft 3-32, and the rear fork 3-33 is clamped in a fork groove of a dual gear. The rear transmission assembly 3-2 in this embodiment is structured to have two rear forward gears.

In some other embodiments, the rear transmission 3 may also be other numbers of rear forward gears, for example, in the case of three rear forward gears, and the setting manner of the other numbers of rear forward gears may be the gear setting manner in the prior art, which is not described herein again.

The power of the front gearbox 2 is output to the front wheel axle 4 through the front output assembly, the power of the front gearbox 2 is also input to the rear gearbox 3 through the rear output assembly, as shown in fig. 5, the front output assembly comprises a first bevel gear transmission structure 4-1, a second connecting shaft 4-2 and a second bevel gear transmission structure 4-3, the power output shaft of the front gearbox 2 is in transmission connection with the second connecting shaft 4-2 through the first bevel gear transmission structure 4-1, and the second connecting shaft 4-2 transmits the power to the front wheel axle of the farming equipment through the second bevel gear transmission structure 4-3. As shown in fig. 6, the rear output assembly comprises a third connecting shaft 5-1 and a third bevel gear transmission structure 5-2, and the rear universal joint 8-3 is in transmission connection with a rear power input shaft 3-21 of the rear gearbox 3 through the third connecting shaft 5-1 and the third bevel gear transmission structure 5-2.

As shown in fig. 7, in the present embodiment, the steering transmission portion is a transmission shaft 8, the transmission shaft 8 includes a front universal joint 8-1, a first connection shaft 8-2, and a rear universal joint 8-3, the front universal joint 8-1 includes a front cross 8-11, the rear universal joint 8-3 includes a rear cross 8-31, the diameters D of the front cross 8-11 and the rear cross 8-31 range from 10 mm to 20mm, the front universal joint 8-1 or the rear universal joint 8-3 is slidably connected to the first connection shaft 8-2, the present embodiment preferably employs the rear universal joint 8-3 to slidably connect to the first connection shaft 8-2, the power of the front transmission 2 is slidably connected to the rear transmission 3 via the front universal joint 8-1, the first connection shaft 8-2 and the rear universal joint 8-3, the closer the sliding connection portion is to the power input end, the larger the vibration and noise are generated, the smaller the farther the larger the vibration and noise are generated, the rear universal joint 8-3 is preferably connected to the first connection portion 8-2, and the service life of the vibration and noise can be prolonged.

As shown in fig. 8, in this embodiment, the hinge connection portion 9 preferably includes a steering structure and a protective body 9-2, both of which are covered outside the transmission shaft 8, in this embodiment, the steering structure includes two mounting plates 9-3 and two connecting plates 9-1, the two mounting plates 9-3 are respectively connected with two sides of the casing of the front transmission case 2 through bolts, the two connecting plates 9-1 are connected between the two mounting plates 9-3, preferably welded to form a whole, the upper and lower side walls of the protective body 9-2 are respectively hinged to the two connecting plates 9-1, and the protective body 9-2 can rotate in the horizontal direction relative to the connecting plate 9-1. The hinge point of the hinge connection part 9 is located in the area between the front universal joint 8-1 and the rear universal joint 8-3, and in the embodiment, the distance between the hinge point and the front universal joint 8-1 is preferably less than or equal to 2/3 of the total distance between the front universal joint 8-1 and the rear universal joint 8-3. The steering structure is mainly connected to the shielding body 9-2 and allows the rear gearbox 3 to rotate relative to the front gearbox 2, so in some other embodiments, the steering structure may be another structure connected to the front gearbox 2 and hinged to the shielding body 9-2.

As shown in fig. 1 and 2, the present embodiment further includes a driver seat 10 and a support frame 10-1, the driver seat 10 is mounted on the steering structural member through the support frame 10-1, and is connected to the housing of the front gearbox 2, two sides of one end of the support frame 10-1 are respectively fixed on the mounting plates 9-3 at two sides, the other end of the support frame 10-1 extends to the rear of the four-wheel micro-farming equipment, and the driver seat 10 is mounted on the support frame 10-1 above the rear of the four-wheel micro-farming equipment.

As shown in figure 1, the four-wheel mini-tiller is further provided with a steering mechanism 11 for controlling the steering of the four-wheel mini-tiller, the steering mechanism 11 comprises a steering wheel 11-1, a connecting shaft 11-2, a connecting rod 11-3 and a pull rod 11-4, the steering wheel 11-1 is in transmission connection with the connecting shaft 11-2, one end of the connecting rod 11-3 is connected to the connecting shaft 11-2, one end of the pull rod 11-4 is hinged to the other end of the connecting rod 11-3, a hinge member 9-21 is arranged on one side, close to one end of the front gearbox 2, of the protection body 9-2, and the other end of the pull rod 11-4 is hinged to the hinge member 9-21 and used for pulling the rear gearbox 3 to rotate.

As shown in FIG. 12, in this embodiment, the lifting support structure for lifting or lowering the four-wheel mini-tiller is further included, in this embodiment, the lifting support structure includes a support rod 15-1 and a connection sleeve 15-2, the connection sleeve 15-2 can be connected with the four-wheel mini-tiller, the support rod 15-1 includes an upper rod 15-11 and a lower rod 15-12, the diameter of the lower rod 15-12 is larger than that of the upper rod 15-11, a step part is arranged at the connection part of the upper rod 15-11 and the lower rod 15-12, the connection sleeve 15-2 is screwed on the upper rod 15-11, and the upper rod 15-11 between the end part of the connection sleeve 15-2 and the step part is formed as an axial limiting section 15-3 for placing the support assembly. In some other embodiments, the lifting support structure may also be constructed using existing jack designs. In some other embodiments, the lifting support structure may also be constructed using existing jack designs.

As shown in fig. 13, a placing member 16-1 for placing a supporting component and a limiting member 16-2 capable of being engaged with the axial limiting section 15-3 are welded on the four-wheel mini-tiller by bolts or welding, in this embodiment, the placing member 16-1 is disposed between the rear fenders, and in some other embodiments, the placing member 16-1 may be connected to other locations, preferably, a hollow member such as a rectangular pipe may be used as the placing member 16-1, in this embodiment, the limiting member 16-2 is a limiting plate, the limiting member 16-2 is hinged to the placing member 16-1, an arc-shaped or semicircular positioning groove matched with the peripheral radian of the axial limiting section 15-3 of the supporting rod 15-1 is formed at the lower part of the limiting plate, a first threaded hole 16-21 is formed in the limiting plate, and a second threaded hole corresponding to the first threaded hole 16-21 is formed in the placing member 16-1. When the support assembly is used specifically, the support assembly is integrally placed on the placing part 16-1, then the limiting part 16-2 is rotated, the positioning groove of the limiting part 16-2 is clamped with the axial limiting section 15-3, so that radial and axial positioning of the support rod 15-1 is achieved, and finally the support assembly can be placed and positioned by connecting bolts to the first threaded hole 16-21 and the second threaded hole.

In the embodiment, the four-wheel miniature tillage equipment has the weight of 150-300Kg, the length of 1.2-2 m and the width of 0.5-0.9 m.

As shown in fig. 4 and 6, in the four-wheel mini-tiller of the present embodiment, the front gearbox 2 has 3 forward gears, the rear gearbox 3 has 2 backward gears (specifically, a low-speed tiller gear and a high-speed walking gear), the front gearbox 2 and the rear gearbox 3 can be cooperatively switched to a three-gear four-wheel-drive walking mode, a plurality of four-wheel-drive tilling modes or a three-gear two-drive walking mode, and the power output mode is specifically as follows:

(1) a three-gear four-wheel drive walking mode: in the four-wheel drive walking mode, the front wheel shaft 4 and the rear wheel shaft 5 are both provided with the walking wheels 7, the walking wheels 7 are preferably the walking wheels 7 with tires, and the power output mode is as follows:

in the front gearbox 2, by operating a front gear shift lever 2-31, a front swing arm is driven to swing to drive a front shifting fork to move, the front shifting fork pushes a triple gear to slide so that a front intermediate shaft first gear 2-222 is meshed with a front output shaft first gear 2-241, or a front intermediate shaft second gear 2-223 is meshed with a front output shaft second gear 2-242, or a front intermediate shaft third gear 2-224 is meshed with a front output shaft third gear 2-243 (corresponding to a first gear, a second gear and a third gear four-wheel drive walking mode respectively), power is input through a front power output shaft 2-24 of the front gearbox 2, is transmitted to a front intermediate shaft normally meshed gear 2-221 through an input shaft normally meshed gear 2-211, is transmitted to the front output shaft first gear 2-241 through the front intermediate shaft first gear 2-222, or is transmitted to the front output shaft second gear 2-242 for meshing, or is transmitted to a front output shaft third gear 2-224 for meshing, and the front output shaft 243 outputs power to a road wheel 7 through a front output assembly; in the rear gearbox 3, the rear gear shifting lever 3-31 is operated to drive the rear swing arm 3-34 to swing, the rear swing arm 3-34 shifts the rear shifting fork 3-33 to move, the rear shifting fork 2033 pushes the dual gear to slide so that the rear input shaft two-gear 3-212 is meshed with the rear intermediate shaft two-gear 3-223, the power of the front power output shaft 2-24 is transmitted to the rear power input shaft 3-21 through the transmission shaft 8, transmitted to the rear intermediate shaft two-gear 3-223 through the rear input shaft two-gear 3-212, driven by the rear intermediate shaft 3-22 to drive the rear intermediate shaft reduction gear 3-221, and then output to the road wheel 7 through the reduction gear set 3-23.

In the four-wheel-drive farming mode, the front wheel shaft 4 is preferably provided with the farming implement 6, the rear wheel shaft 5 is preferably provided with the travelling wheels 7, and the travelling wheels 7 are preferably iron wheels. In the four-wheel-drive cultivation mode, the front wheel shaft 4 is adopted to install the cultivation machine 6, and when the rear wheel shaft 5 is provided with the travelling wheels 7, the rotating speed ratio range of the front gear box 2 output to the front wheel shaft 4 and the rear gear box 3 output to the rear wheel shaft 5 is 4.5-8:1. In some other embodiments, the tillage implement 6 can be mounted on both the front wheel shaft 4 and the rear wheel shaft 5, or the front wheel shaft 4 is provided with iron wheels, the rear wheel shaft 5 is provided with the tillage implement 6, and the power output mode is as follows:

(2) four-wheel-drive farming mode 1:

in the front gearbox 2, the front swing arm is driven to swing to drive the front shifting fork to move by operating the front gear shifting lever 2-31, the front shifting fork pushes the triple gear to slide so that the front middle shaft first gear 2-222 is meshed with the front output shaft first gear 2-241, power is input through the front power output shaft 2-24 of the front gearbox 2, is transmitted to the front middle shaft normally meshed gear 2-221 through the input shaft normally meshed gear 2-211 and is transmitted to the front output shaft first gear 2-241 through the front middle shaft first gear 2-222, and the front output shaft outputs the power to the tillage implement 68 through the front output assembly; in the rear gearbox 3, the rear gear shifting lever 3-31 is operated to drive the rear swing arm 3-34 to swing, the rear swing arm 3-34 drives the rear shifting fork 3-33 to move, the rear shifting fork 2033 pushes the dual gear to slide so that the rear input shaft first gear 3-211 is meshed with the rear intermediate shaft first gear 3-222, the power of the front power output shaft 2-24 is transmitted to the rear power input shaft 3-21 through the transmission shaft 8, transmitted to the rear intermediate shaft first gear 3-222 through the rear input shaft first gear 3-211, driven by the rear intermediate shaft 3-22 to drive the rear intermediate shaft reduction gear 3-221, and output to the road wheel 7 through the reduction gear set 3-23. The mode can be used for the cultivation of hard soil.

(3) Four-wheel drive farming mode 2:

in the front gearbox 2, a front gear shifting rod 2-31 is operated to drive a front swing arm to swing so as to drive a front shifting fork to move, the front shifting fork pushes a triple gear to slide so that a front intermediate shaft two-gear 2-223 is meshed with a front output shaft two-gear 2-242, power is input through a front power output shaft 2-24 of the front gearbox 2, is transmitted to a front intermediate shaft normally meshed gear 2-221 through an input shaft normally meshed gear 2-211 and is transmitted to a front output shaft two-gear 2-242 through the front intermediate shaft two-gear 2-223, and the front output shaft outputs the power to a tillage implement 68 through a front output assembly; in the rear gearbox 3, the rear gear shifting lever 3-31 is operated to drive the rear swing arm 3-34 to swing, the rear swing arm 3-34 shifts the rear shifting fork 3-33 to move, the rear shifting fork 2033 pushes the dual gear to slide so that the rear input shaft first gear 3-211 is meshed with the rear intermediate shaft first gear 3-222, the power of the front power output shaft 2-24 is transmitted to the rear power input shaft 3-21 through the transmission shaft 8, is transmitted to the rear intermediate shaft first gear 3-222 through the rear input shaft first gear 3-211, drives the rear intermediate shaft reduction gear 3-221 through the rear intermediate shaft 3-22, and outputs the power to the travelling wheel 7 through the reduction gear set 3-23. This mode can be used for harder soil cultivation.

(4) Four-wheel drive farming mode 3:

in the front gearbox 2, the front gear shifting rod 2-31 is operated to drive the front swing arm to swing so as to drive the front shifting fork to move, the front shifting fork pushes the triple gear to slide so that the front intermediate shaft three-gear 2-224 is meshed with the front output shaft three-gear 2-243, power is input through the front power output shaft 2-24 of the front gearbox 2, is transmitted to the front intermediate shaft three-gear 2-221 through the input shaft normally meshed gear 2-211 and is transmitted to the front output shaft three-gear 2-243 through the front intermediate shaft three-gear 2-224, and the front output shaft outputs the power to the tillage implement 68 through the front output assembly; in the rear gearbox 3, the rear gear shifting lever 3-31 is operated to drive the rear swing arm 3-34 to swing, the rear swing arm 3-34 drives the rear shifting fork 3-33 to move, the rear shifting fork 2033 pushes the dual gear to slide so that the rear input shaft first gear 3-211 is meshed with the rear intermediate shaft first gear 3-222, the power of the front power output shaft 2-24 is transmitted to the rear power input shaft 3-21 through the transmission shaft 8, transmitted to the rear intermediate shaft first gear 3-222 through the rear input shaft first gear 3-211, driven by the rear intermediate shaft 3-22 to drive the rear intermediate shaft reduction gear 3-221, and output to the road wheel 7 through the reduction gear set 3-23. This mode can be used for soft soil cultivation.

(5) A three-gear two-drive walking mode: in the two-wheel drive walking mode, the front wheel shaft 4 and the rear wheel shaft 5 are both provided with the walking wheels 7, the walking wheels 7 are preferably the walking wheels 7 with tires, and the power output mode is as follows:

in the front gearbox 2, by operating a front gear shift lever 2-31, a front swing arm is driven to swing to drive a front shifting fork to move, the front shifting fork pushes a triple gear to slide so that a front intermediate shaft first gear 2-222 is meshed with a front output shaft first gear 2-241, or a front intermediate shaft second gear 2-223 is meshed with a front output shaft second gear 2-242, or a front intermediate shaft third gear 2-224 is meshed with a front output shaft third gear 2-243 (corresponding to a first gear, second gear or third gear two-drive walking mode respectively), power is input through a front power output shaft 2-24 of the front gearbox 2, is transmitted to a front intermediate shaft normally meshed gear 2-221 through an input shaft normally meshed gear 2-211, is transmitted to the front output shaft first gear 2-241 through the front intermediate shaft first gear 2-222, or is transmitted to the front output shaft second gear 2-242, or is transmitted to a front output shaft third gear 2-224, and is transmitted to a front output shaft third gear 2-221, and the power is output to a road wheel 7 through a front output assembly; in the rear gearbox 3, the rear gear shifting rods 3-31 are operated to drive the rear swing arms 3-34 to swing, the rear swing arms 3-34 shift the rear shifting forks 3-33 to move, the rear shifting fork 2033 pushes the dual gears to slide, so that the dual gears are not meshed with the gears on the rear intermediate shafts 3-22 (a neutral state), and the rear gearbox 3 does not output power.

Example 2

This embodiment is different from embodiment 1 in that: the four-wheel mini-tiller is characterized by further comprising a towing connecting piece 13 arranged at the rear part of the four-wheel mini-tiller, wherein the towing connecting piece 13 is detachably connected with a rear transmission box or a second rear tiller or a tiller 6, and the rear transmission box is in transmission connection with a first rear tiller. The second rear-mounted machine is a tillage machine which does not need to rotate for operation and comprises but is not limited to a ridger, a backfilling knife, a fertilizing box, a plough share and the like. The first rear-mounted tillage implement is a rotary working tillage implement, including but not limited to rotary blades, weed-removing wheels, and the like.

In the embodiment, a forward transmission assembly, a reverse transmission assembly and an output assembly are arranged in the rear transmission box, the forward transmission assembly and the reverse transmission assembly are matched to output power to the output assembly and can be switched to drive the output assembly to rotate forwards or reversely or not to output power, and the output assembly is in transmission connection with the first rear tillage machine. As shown in fig. 9, the forward transmission assembly includes a first transmission shaft 12-11, a first transmission wheel 12-111 and a rear coupling gear slidably connected to the first transmission shaft 12-11 are disposed on the first transmission shaft 12-11, the rear coupling gear includes a second transmission gear 12-112 and a third transmission gear 12-113, and the first transmission wheel 12-111 is in transmission connection with a rear power input shaft 3-21 on the rear transmission case 3 through a belt or a chain; the reverse transmission assembly comprises second transmission shafts 12-12, and fourth transmission gears 12-121 and fifth transmission gears 12-122 are respectively arranged on the second transmission shafts 12-12; the output assembly comprises a rear output shaft 12-3, a sixth transmission gear 12-31 and a seventh transmission gear 12-32 are respectively arranged on the rear output shaft 12-3, and the seventh transmission gear 12-32 is meshed with a fifth transmission gear 12-122; when the rear-mounted dual gear slides, the second transmission gears 12-112 can be switched to be meshed with the fourth transmission gears 12-121, or the third transmission gears 12-113 are meshed with the sixth transmission gears 12-31, or neither is meshed.

As shown in fig. 10, the towing connecting member 13 includes a fixing member 13-1 disposed on the rear transmission case 3, and a first connecting member 13-2 detachably connected to the fixing member 13-1 through a bolt, wherein a first mounting member is disposed at an end of the first connecting member 13-2, the first mounting member includes a first bottom plate 13-21 and first bending plates 13-22 disposed at two sides of the first bottom plate 13-21, and a plurality of second connecting holes for mounting the connecting member are correspondingly formed in the two first bending plates 13-22.

As shown in fig. 11, the present embodiment is further provided with an implement suspension assembly 14, the implement suspension assembly 14 is also connected with the rear gearbox 3 through a towing connecting piece 13, the implement suspension assembly 14 comprises a second connecting piece, one end of the second connecting piece is provided with a second mounting piece detachably connected with the first mounting piece, and the other end of the second connecting piece is provided with a tilling blade connecting piece 14-2 detachably connected with the tilling implement 6 through a bolt or a pin; the second installation piece comprises a second bottom plate 14-11 and second bending plates 14-12 positioned on two sides of the second bottom plate 14-11, a plurality of second installation holes are correspondingly formed in the two second bending plates 14-12, the first installation holes correspond to the second installation holes in a one-to-one mode, and bolts or pin shafts for connecting the first installation piece and the second installation piece are arranged in the first installation holes and the second installation holes.

The present embodiment is explained as follows when using the first and second rear tilling implements:

(1) the first rear-mounted tillage machine is used

The rear transmission case is arranged on the rear transmission case 3 through a towing connecting piece 13, and power is correspondingly switched into forward rotation output or reverse rotation output through sliding the rear dual gear according to the forward rotation and reverse rotation types of the first rear tillage machine.

When the first rear tillage implement is of a reverse-rotation implement type, the rear dual gear slides to be switched to the third transmission gear 12-113 to be meshed with the sixth transmission gear 12-31, power is input into the first transmission shaft 12-11 from the rear gearbox 3 through the first transmission wheel 12-111, is transmitted to the sixth transmission gear 12-31 through the third transmission gear 12-113, and is output from the rear output shaft to drive the first rear tillage implement to rotate forwards.

When the first rear tiller is of a reverse tiller type, the rear coupling gear is switched to be meshed with the second transmission gear 12-112 and the fourth transmission gear 12-121 in a sliding mode, power is input into the first transmission shaft 12-11 from the rear gearbox 3 through the first transmission wheel 12-111, is transmitted to the fourth transmission gear 12-121 through the second transmission gear 12-112 and drives the second transmission shaft 12-12 to rotate, then is transmitted to the seventh transmission gear 12-32 from the fifth transmission gear 12-122, and is output from the rear output shaft to drive the first rear tiller to rotate reversely.

When the rear-mounted dual gear is switched to be not meshed with the gears on the second transmission shaft 12-12 and the rear-mounted output shaft 12-3 in a sliding mode, the rear-mounted transmission box does not output power.

(2) The trailing second rear tillage machine

Based on the use requirement, a second rear tillage machine tool which does not need to be rotated, such as a ridger, a backfilling knife, a fertilizing box, a ploughshare and the like, is selected, and the second rear tillage machine tool can be mounted on the rear gearbox 3 through the towing connecting piece 13 for use.

(3) Used for suspending tillage equipment

When not cultivating, the cultivating tools 6 on the front wheel shaft 4 or the rear wheel shaft 5 are connected on the towing connecting piece 13 through the tool suspension component 14.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims (20)

1. A four-wheel miniature tillage equipment comprises a power assembly, and is characterized in that: also comprises a front gear box, a rear gear box, a front wheel shaft, a rear wheel shaft, a tillage implement and walking wheels,

the power output end of the power assembly is in transmission connection with the front gearbox, and the front gearbox is in transmission connection with the rear gearbox through the steering transmission part;

the power output of the front gearbox drives a front wheel shaft, the power output of the rear gearbox drives a rear wheel shaft, and tillage implements or travelling wheels can be detachably mounted on the front wheel shaft or the rear wheel shaft.

2. A four-wheel micro-farming apparatus according to claim 1, wherein: the front gearbox is at least provided with two front advancing gears, the rear gearbox is at least provided with two rear advancing gears, 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 farming modes or a multi-gear two-wheel drive walking mode in a matched mode.

3. A four-wheeled mini farming apparatus according to claim 1, wherein: a hinged connection part is arranged between the rear gearbox and the shell of the front gearbox, and the rear gearbox can rotate in the horizontal direction relative to the front gearbox.

4. A four-wheeled mini farming apparatus according to claim 1, wherein: the front gearbox includes a front housing, a front transmission assembly and a front steering assembly,

the front transmission assembly comprises a front power input shaft, a front intermediate shaft, a reverse gear shaft and a front power output shaft which are arranged in a front shell, and an input shaft constant meshing gear is arranged on the front power input shaft;

the front intermediate shaft is provided with a triple gear and a front intermediate shaft normally meshed gear meshed with the input shaft normally meshed gear, the triple gear is connected with the front intermediate shaft in a sliding manner, and the triple gear comprises a front intermediate shaft first-gear, a front intermediate shaft second-gear and a front intermediate shaft third-gear;

a front output shaft first-gear, a front output shaft second-gear and a front output shaft third-gear are arranged on the front power output shaft;

the reverse gear shaft is provided with a reverse gear and a reverse gear idle wheel, and the reverse gear idle wheel is meshed with a first gear of the front output shaft;

when the triple gear slides, the first gear of the front intermediate shaft is engaged with the first gear of the front output shaft in a switchable manner, or the second gear of the front intermediate shaft is engaged with the second gear of the front output shaft, or the front intermediate shaft three-gear is meshed with the front output shaft three-gear, or the front intermediate shaft three-gear is meshed with the reverse gear, or both the front intermediate shaft three-gear and the reverse gear are not meshed;

the front control assembly is used for controlling the triple gear to slide and shift gears.

5. A four-wheeled mini farming apparatus according to claim 1, wherein: the rear gearbox comprises a rear shell, a rear transmission assembly and a rear control assembly,

the rear transmission assembly comprises a rear power input shaft, a rear intermediate shaft and a reduction gear set which are arranged in the rear shell, the rear power input shaft is connected with a dual gear in a sliding manner, and the dual gear comprises a rear input shaft first gear and a rear input shaft second gear;

a rear intermediate shaft reduction gear, a rear intermediate shaft first gear and a rear intermediate shaft second gear are arranged on the rear intermediate shaft;

when the dual gears slide, the dual gears can be switched to be meshed with a rear input shaft first gear and a rear intermediate shaft first gear, or meshed with a rear input shaft second gear and a rear intermediate shaft second gear, or not meshed;

the rear intermediate shaft reduction gear is in transmission connection with a reduction gear set, and the reduction gear set outputs to a rear wheel shaft;

the rear control assembly is used for controlling the dual gear to slide and shift gears.

6. A four-wheel micro-farming apparatus according to claim 1, wherein: the tilling width of the tillage implement after the tillage implement is mounted with the front wheel shaft or the rear wheel shaft is 0.8-1.4 m.

7. A four-wheel micro-farming apparatus according to claim 3, wherein: the steering transmission part is a transmission shaft, the transmission shaft comprises a front universal joint, a first connecting shaft and a rear universal joint which are sequentially connected, and the front universal joint or the rear universal joint is connected with the first connecting shaft in a sliding mode.

8. A four-wheeled mini farming apparatus according to claim 7, wherein: the front universal joint comprises a front cross shaft, the rear universal joint comprises a rear cross shaft, and the diameter ranges of the front cross shaft and the rear cross shaft are 10-20mm.

9. A four-wheel micro-farming apparatus according to claim 7, wherein: the hinge point of the hinge connection part is located in the area range between the front universal joint and the rear universal joint, and the rear gearbox can rotate in the horizontal direction relative to the front gearbox.

10. A four-wheeled mini tiller apparatus as defined in claim 9, wherein: the distance between the hinge point of the hinge connecting part and the front universal joint is less than or equal to 2/3 of the total distance between the front universal joint and the rear universal joint.

11. A four-wheel micro-farming apparatus according to claim 7, wherein: articulated connecting portion are including all cladding steering structure spare, the protective body outside the transmission shaft, steering structure spare one side is connected with the casing of preceding gearbox, and steering structure spare opposite side is articulated with protective body one end, the protective body other end is connected with the casing of back gearbox, the protective body turns to the structural part relatively and can rotates at the horizontal direction.

12. A four-wheel micro-farming apparatus according to claim 11, wherein: the steering structure part comprises two mounting plates and two connecting plates, the two mounting plates are respectively connected with two sides of a shell of the front gearbox, the two connecting plates are connected between the two mounting plates, and the upper side wall and the lower side wall of the protection body are respectively hinged with the two connecting plates.

13. A four-wheel micro-farming apparatus according to claim 1, wherein: the four-wheel mini-type tillage equipment is characterized by further comprising a driver seat and a support frame, wherein one end of the support frame is connected with the front gearbox, the other end of the support frame extends to the rear portion of the four-wheel mini-type tillage equipment, and the driver seat is installed above the support frame, which is located at the rear portion of the four-wheel mini-type tillage equipment.

14. A four-wheel micro-farming apparatus according to claim 1, wherein: the steering mechanism comprises a steering wheel, a connecting shaft, a connecting rod and a pull rod, the steering wheel is in transmission connection with the connecting shaft, one end of the connecting rod is connected to the connecting shaft, one end of the pull rod is hinged to the other end of the connecting rod, and the other end of the pull rod is used for pulling the rear gearbox to rotate.

15. A four-wheel micro-farming apparatus according to claim 1, wherein: in the four-wheel-drive cultivation mode, a front wheel shaft is adopted for mounting cultivation tools, and when a rear wheel shaft is provided with traveling wheels, the rotating speed ratio of the front gear box to the front wheel shaft and the rear gear box to the rear wheel shaft is 4.5-8:1.

16. A four-wheeled mini farming apparatus according to claim 1, wherein: the power assembly is a single-cylinder air-cooled gasoline engine or a single-cylinder air-cooled diesel engine, and the power range is 4-9.2KW.

17. A four-wheel micro-farming apparatus according to claim 1, wherein: the lifting support structure is used for lifting or lowering the four-wheel mini-tiller.

18. A four-wheel micro-farming apparatus according to claim 17, wherein: the lift bearing structure includes bracing piece and adapter sleeve, the adapter sleeve can be connected with four-wheel mini farming equipment, the bracing piece includes upper boom and lower beam, and the diameter of lower beam is greater than the diameter of upper boom, and the upper boom has the step with lower beam junction, adapter sleeve threaded connection is on the upper boom, the spacing section of axial when placing supporting component is formed to the upper boom shape between the tip of adapter sleeve and the step.

19. A four-wheel micro-farming apparatus according to any of claims 1 to 17, wherein: the four-wheel miniature tillage equipment has the weight of 150-300Kg, the length of 1.2-2 m and the width of 0.5-0.9 m.

20. A four-wheel micro-farming apparatus according to claim 1, wherein: the miniature four-wheel tillage equipment is characterized by further comprising a towing connecting piece arranged at the rear part of the miniature four-wheel tillage equipment, wherein the towing connecting piece is detachably connected with a rear transmission box or a second rear tillage machine or tillage machine, and the rear transmission box is in transmission connection with a first rear tillage machine.

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