CN217784131U

CN217784131U - Speed change system for agricultural working machine

Info

Publication number: CN217784131U
Application number: CN202222237325.4U
Authority: CN
Inventors: 李义刚
Original assignee: Chongqing Keniu Machinery Co ltd
Current assignee: Chongqing Keniu Machinery Co ltd
Priority date: 2022-08-24
Filing date: 2022-08-24
Publication date: 2022-11-11
Anticipated expiration: 2032-08-24

Abstract

The utility model relates to a machine technical field is ploughed with declining to agricultural discloses a variable speed system for agricultural operation machinery, include: a transmission including a transmission housing and a transmission assembly mounted within the transmission housing; the transmission assembly is in transmission connection with the speed change assembly; and the rear resistance assembly is in transmission connection with the transmission assembly and comprises a reduction gearbox and resistance wheels arranged on two sides of the reduction gearbox, and the reduction gearbox is hinged with the speed change machine shell. The utility model discloses a back resistance subassembly produces the resistance when farming, and back resistance subassembly is equivalent to the effect of resistance pole, produces the crawl power when the machine walking is obstructed to guarantee to plough the machine operation in succession a little, laborsaving.

Description

Speed change system for agricultural working machine

Technical Field

The utility model relates to an agricultural is with ploughing quick-witted technical field a little, specifically relates to a variable speed system for agricultural operation machinery.

Background

The agricultural operation machine, also called a mini-tiller or a field management machine (hereinafter referred to as mini-tiller), uses a small diesel engine or a gasoline engine as power, and has the characteristics of light weight, small volume, simple structure and the like. The micro-tillage machine is widely applicable to dry lands, paddy fields, orchards and the like in plains, mountainous areas and hills. The mini-tiller can be freely operated in the field, is convenient for users to use and store, eliminates the trouble that large agricultural machinery cannot enter mountain fields, and is the best choice for vast farmers to replace traditional manual tillage or cattle tillage.

The rear part of the existing mini-tiller generally provides resistance for a working cutter of the mini-tiller to plough into the ground through mounting a resistance rod, and the existing mini-tiller has the defect that an operator needs to press down an armrest through arms by means of the weight of the body, so that the resistance rod is inserted into the soil, and the existing agricultural operation machinery is labor-consuming in tillage and low in efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the above-mentioned problem that prior art exists, provide a variable speed system for agricultural operation machinery, the utility model discloses install at the main variable speed system rear portion of current machine of ploughing a little, carry out the variable speed to the power that comes from main variable speed system, the utility model discloses a resistance bar has been replaced, thereby make the utility model discloses a machinery for agricultural operation can produce the resistance when the farming, makes the machine work according to the constant speed all the time, finally guarantees continuous and laborsaving of work.

In order to achieve the above object, the present invention provides a speed change system for agricultural working machine, including:

a transmission including a transmission housing and a transmission assembly mounted within the transmission housing; the transmission assembly is in transmission connection with the speed change assembly; and

the rear resistance assembly is in transmission connection with the transmission assembly and comprises a reduction gearbox and resistance wheels arranged on two sides of the reduction gearbox, and the reduction gearbox is hinged with the speed change casing.

Further, the speed change assembly comprises a power input unit, a first transmission shaft, a second transmission shaft, a third transmission shaft and a power output unit, the first transmission shaft is rotatably installed in the speed change casing, a first gear and a gear shifting gear set are fixed on the first transmission shaft, the first gear is in transmission connection with the power input unit, the second transmission shaft is parallel to the first transmission shaft, a gear shifting gear set is coaxially installed on the second transmission shaft, the gear shifting gear set can be meshed with the gear shifting gear set, the second transmission shaft is further fixed with a second gear, the second gear is meshed with a third gear installed on the third transmission shaft, a fourth gear is fixed on the third transmission shaft, the fourth gear is in transmission fit with the power output unit, and the power output unit is in transmission connection with the rear resistance assembly.

Further, the hand lever is installed to the speed change housing, the hand lever is installed on speed change housing upper portion to be located and be close to back resistance subassembly one side, the shifting block is installed to the tip that the hand lever stretched into in the speed change housing, and accessible shifting block drives behind the operation hand lever change gear group moves along second transmission shaft axis direction, so that change gear group can with change gear group's different gear engagement.

Further, the power input unit includes an input shaft that is rotatably connected to the transmission case and an end of the input shaft located within the transmission case is engaged with the first gear.

Furthermore, the inner wall of the speed change gear set is provided with a plurality of gear grooves distributed along the length direction of the second transmission shaft, a limiting clamp is arranged in the second transmission shaft, the limiting clamp is perpendicular to the axis direction of the second transmission shaft, two ends of the limiting clamp extend out of the second transmission shaft and can be clamped into the gear grooves, the speed change gear set comprises a first speed change gear, a second speed change gear and a third speed change gear, and the first speed change gear, the second speed change gear and the third speed change gear are of an integrally formed structure;

when the limit is clamped into one of the gear grooves, the speed change gear set and the gear shifting gear set are in a non-meshed state.

Furthermore, the reduction box comprises a reduction box body, a bevel gear arranged inside the reduction box body and a bevel gear meshed with the bevel gear;

the bevel gear is installed inside the reduction box body through a resistance input shaft, the end part of the resistance input shaft, extending out of the reduction box body, is a power input end, the power input end is in transmission connection with the transmission assembly, the bevel gear is installed inside the reduction box body through a resistance output shaft, and the end part of the resistance output shaft, extending out of the reduction box body, is provided with the resistance wheel.

Further, the transmission assembly comprises a first connecting shaft and universal joint shaft couplers detachably connected to two ends of the first connecting shaft, and the universal joint shaft couplers are in transmission connection with the power output unit of the speed change assembly and in transmission connection with the resistance input shaft respectively.

Further, the transmission assembly comprises a second connecting shaft, a protection pipe and universal joint coupling devices connected to two ends of the second connecting shaft, and the protection pipe is sleeved on the outer portion of the second connecting shaft.

Furthermore, a pedal is fixed on the protection tube, and a seat or a cushion with changeable height is installed outside the reduction box body.

Further, the resistance output shaft can also be provided with a road wheel.

Through the technical scheme, the utility model discloses following beneficial effect has:

1. the utility model provides a variable speed system for agricultural operation machinery carries out a variable speed through main variable speed system earlier, then carries out a variable speed through the variable speed subassembly, with speed output to back resistance subassembly, back resistance subassembly produces the resistance when farming, has replaced the effect of current resistance bar in other words, produces the crawl force when the machine walking is obstructed, makes the machine work according to fixed speed all the time to guarantee the continuity of work, it is laborsaving. The speed change component of the utility model is provided with a plurality of speed gears to meet the requirements of different soil qualities, different farming depths and farming modes;

2. under the optimized condition, the reduction box of the utility model is hinged with the speed changing shell, so that the reduction box can swing left and right relative to the speed changing shell, and the operation of an operator can be facilitated to turn the handrail and avoid the phenomenon of missing plowing during cultivation;

3. under preferred conditions, the utility model provides a pair of speed change gear set and gear shifting unit of speed change system for agricultural operation machinery are in the non-engaged state, are in the neutral state promptly, and resistance wheel need not lift off ground and rotate along with the host computer body when the machine shifts and retreats for it is more convenient than the tradition machine of ploughing a little during the operation, safer, more laborsaving (the tradition is ploughed a little and is needed the resistance lever to lift up and leave ground).

Drawings

FIG. 1 is a schematic view of the structure of the transmission system for agricultural machine connected to a main transmission system;

FIG. 2 is a rear view of the transmission housing;

FIG. 3 isbase:Sub>A partial cross-sectional view A-A of FIG. 2;

FIG. 4 is an enlarged view at A in FIG. 3;

FIG. 5 is a partial cross-sectional view B-B of FIG. 2;

FIG. 6 is a schematic view of the three-dimensional structure of the sitting mini-tiller of the present invention;

fig. 7 is a partial sectional view of the sitting mini-tiller of the utility model.

Description of the reference numerals

The transmission comprises a transmission case 1, a hand lever 11, a shifting block 12, a hinge joint 13, a transmission assembly 2, a power input unit 21, a first transmission shaft 22, a first gear 221, a gear shifting gear set 222, a second transmission shaft 23, a transmission gear set 231, a gear groove 232, a second gear 233, a limit clamp 234, a third transmission shaft 24, a third gear 241, a fourth gear 242, a power output unit 25, a rear resistance assembly 3, a resistance wheel 31, a reduction gearbox 32, a reduction box 321, a bevel gear 322, a bevel gear 323, a transmission assembly 33, a first connecting shaft 331, a second connecting shaft 332, a universal joint coupler 333, a protective pipe 334, a pedal 335, a seat 336 and a main transmission system 4.

Detailed Description

The utility model discloses in, agricultural operation machinery can be ploughs machine, ditching machine or rural area supervisor a little. In the prior art, a micro-cultivator is generally used for cultivating a field, a ditcher is used for ditching or covering a thin film, and a field management machine can be used for operations such as ridging.

The utility model discloses when using, variable speed casing 1 is connected with 4 powers of the main gear system of ploughing the machine a little. The main speed-changing system 4 is connected with a working cutter in a transmission way, the working cutter can be a rotary blade during cultivation, the working cutter can be a ditching cutter during ditching, and the specific shapes of the ditching cutter and the rotary blade are not limited here.

In order to achieve the above object, as shown in fig. 1 to 3, the present invention provides a transmission system for agricultural working machine, comprising:

a transmission device including a transmission case 1 and a transmission assembly 2 installed in the transmission case 1;

a transmission assembly 33 in transmission connection with the speed change assembly 2; and

the rear resistance component 3 is in transmission connection with the transmission component 33, the rear resistance component 3 comprises a reduction gearbox 32 and resistance wheels 31 arranged on two sides of the reduction gearbox 32, and the reduction gearbox 32 is hinged with the speed change machine shell 1.

According to the utility model provides a pair of embodiment, the utility model discloses speed change casing 1 and 4 box fixed connection of main gear system, for example adopt the fastener cooperation, the power of main gear system 4 is connected to 2 departments of variable speed subassembly, exports to reducing gear box 32 through drive assembly 33, finally exports to resistance wheel 31.

The utility model discloses reducing gear box 32 and the articulated connection of speed change casing 1 specifically can be fixed with articulated joint 13 in reducing gear box 32 one side, correspond in 1 one side of speed change casing and be provided with articulated joint 13, adopt the bolt connection, and drive assembly 33 also adopts the mode that can dismantle the connection. When taking off back resistance subassembly 3 from main gear system 4 like this, can also install the resistance bar on main gear system 4, it is the same as current machine structure of ploughing a little. The utility model discloses reducing gear box 32 and speed change casing 1 adopt the articulated mode, can realize the relative speed change casing 1 horizontal hunting of reducing gear box 32, and the phenomenon of the no tillage when making things convenient for operating personnel to operate the handrail and turn and avoid appearing the farming.

The utility model discloses conventional speed is adopted to operation cutter rotational speed, and after the variable speed of main gear system 4 and variable speed subassembly 2, the speed of back resistance subassembly 3 output can be controlled at 1-50 commentaries on classics approximately, is less than the speed of current operation cutter output far away. Therefore, under the structural condition that the resistance rod is not used, an operator does not press down the handrail with force, and the operation is labor-saving and efficient.

Further, as shown in fig. 3 to 5, the transmission assembly 2 includes a power input unit 21, a first transmission shaft 22, a second transmission shaft 23, a third transmission shaft 24 and a power output unit 25, the first transmission shaft 22 is rotatably installed in the transmission housing 1, a first gear 221 and a shift gear set 222 are fixed on the first transmission shaft 22, the first gear 221 is in transmission connection with the power input unit 21, the second transmission shaft 23 is parallel to the first transmission shaft 22, a shift gear set 231 is coaxially installed on the second transmission shaft 23, the shift gear set 231 can be meshed with the shift gear set 222, a second gear 233 is further fixed on the second transmission shaft 23, the second gear 233 is meshed with a third gear 241 installed on the third transmission shaft 24, a fourth gear 242 is fixed on the third transmission shaft 24, the fourth gear 242 is in transmission fit with the power output unit 25, and the power output unit 25 is in transmission connection with the rear resistance assembly 3.

According to the utility model provides a pair of specific embodiment, when the operation, the power that comes from main gear system 4 passes through power input unit 21 and transmits to first gear 221, first gear 221 passes through spline and first transmission shaft 22 fixed connection, first transmission shaft 22, second transmission shaft 23 and third transmission shaft 24 both ends all adopt the bearing to be connected with speed change casing 1, first transmission shaft 22 rotates back drive gear shifting unit 222 and rotates, second transmission shaft 23 coaxial arrangement has gear shifting unit 231, gear shifting unit 231 can remove along second transmission shaft 23 axis direction, thereby can mesh with gear shifting unit 222, second transmission shaft 23 still is fixed with second gear 233 through the spline, third gear 241 meshing of installation on second gear 233 and the third transmission shaft 24 is fixed with fourth gear 242 on the third transmission shaft 24, fourth gear 242 and power output unit 25 transmission cooperation, back second transmission shaft 23 rotational speed is different after shifting, export power to back resistance assembly 3 through power output unit 25 through third gear 241.

A hand lever 11 is installed on the upper portion of the speed change casing 1, a shifting block 12 is installed at the end portion, extending into the speed change casing 1, of the hand lever 11, and the shifting block 12 can be formed by adopting an existing structure. During gear shifting, the operating lever 11 can drive the speed change gear set 231 to move along the axial direction of the second transmission shaft 23 through the shifting block 12, so that the speed change gear set 231 can be meshed with different gears of the gear shift gear set 222.

The power output unit 25 adopts the matching of a transmission shaft and a gear, the transmission shaft is still rotatably arranged in the transmission case 1 through a bearing, and the gear is meshed with the third gear 241.

Further, the hand lever 11 is installed on the transmission housing 1, the hand lever 11 is used for gear shifting operation, the hand lever 11 is installed on the upper portion of the transmission housing 1 and is located at one side close to the rear resistance assembly 3, the shifting block 12 is installed at the end portion of the hand lever 11 extending into the transmission housing 1, and the shifting block 12 can drive the transmission gear set 231 to move along the axial direction of the second transmission shaft 23 after the hand lever 11 is operated, so that the transmission gear set 231 can be meshed with different gears of the gear shifting set 222.

Further, the power input unit 21 includes an input shaft, the input shaft is rotatably connected to the transmission housing 1, and an end of the input shaft located in the transmission housing 1 is engaged with the first gear 221. The end of the input shaft is toothed in an annular array so as to mesh with the first gear 221.

Further, the inner wall of the speed change gear set 231 is provided with a plurality of gear grooves 232 distributed along the length direction of the second transmission shaft 23, a limit clamp 234 is arranged in the second transmission shaft 23, the limit clamp 234 is perpendicular to the axial direction of the second transmission shaft 23, two ends of the limit clamp 234 extend out of the second transmission shaft 23 and can be clamped in the gear grooves 232, the speed change gear set 231 comprises a first speed change gear, a second speed change gear and a third speed change gear, and the first speed change gear, the second speed change gear and the third speed change gear are of an integrally formed structure;

when the limit clip 234 is inserted into one of the gear slots 232, the speed change gear set 231 and the shift gear set 222 are in a non-engaged state.

According to an embodiment of the present invention, the position-limiting clip 234 is formed by a conventional structure, such as a spring and a position-limiting ball. In a specific arrangement, four gear grooves 232 may be formed in the inner wall of the speed change gear set 231. The gear shifting gear set 222 and the gear shifting gear set 231 of the embodiment are correspondingly arranged, in order to facilitate the gear shifting gear set 231 to be in a neutral state, the gear shifting gear set 222 comprises two integrally formed gears and an independent gear, so that the first gear 221, the second gear 233 and the third gear 241 of the gear shifting gear set 231 are not meshed with the gear shifting gear set 222, and therefore the gear shifting gear set is in the neutral state.

Further, as shown in fig. 3, 6 and 7, the reduction gear box 32 includes a reduction gear box body 321, a bevel gear 322 installed inside the reduction gear box body 321, a bevel gear 323 in gear engagement with the bevel gear 322;

the bevel gear 323 is mounted inside the reduction box body 321 through a resistance input shaft, the end of the resistance input shaft extending out of the reduction box body 321 is a power input end, the power input end is in transmission connection with the transmission assembly 33, the bevel gear 322 is mounted inside the reduction box body 321 through a resistance output shaft, and the end of the resistance output shaft extends out of the reduction box body 321 and is provided with the resistance wheel 31.

According to the utility model provides an embodiment, in this embodiment, resistance wheel 31 can be selected according to the user demand of difference, for example when the mode that adopts operating personnel to walk is ploughed, in order to provide bigger resistance, need adopt resistance wheel 31 circumference face to have longer pole this moment to insert ground more deeply. And when adopting the mode that operating personnel sat the operation on seat 336 or cushion, then adopt the better resistance wheel 31 of support nature, because operating personnel's weight has provided some gravity this moment, can satisfy the rotary blade operation depth of ploughing completely, adopt resistance wheel 31 that the wheel face resistance is little to conveniently walk.

Further, the transmission assembly 33 includes a first connecting shaft 331 and a universal joint coupler 333 detachably connected to two ends of the first connecting shaft 331, wherein the universal joint coupler 333 is respectively in transmission connection with the power output unit 25 of the speed changing assembly 2 and in transmission connection with the resistance input shaft.

As shown in fig. 3, in the present embodiment, the universal joint coupler 333 and the first connecting shaft 331 are connected and driven, so that easy disassembly and assembly can be realized and assembly errors can be overcome.

Further, as shown in fig. 6, the transmission assembly 33 includes a second connecting shaft 332, a protecting tube 334 and a universal joint coupler 333 connected to two ends of the second connecting shaft 332, wherein the protecting tube 334 is sleeved outside the second connecting shaft 332.

According to the utility model provides an embodiment, this embodiment provides another kind of transmission assembly 33, and is different from other embodiments that second connecting axle 332 length is greater than first connecting axle 331, and protection tube 334 lower part is fixed with articulated joint 13, realizes articulating with variable speed case 1. A pedal 335 is fixed on the protection pipe 334 for pedaling, and a seat 336 or a cushion with changeable height is installed outside the reduction box 321. During the use, operating personnel can sit the operation on cushion or seat 336, and the mode that can rise can be, adopts the structure of cup jointing of two steel pipes, and two steel pipes correspond along the direction of height and have seted up the hole, adopt the bolt to insert the hole and can realize fixing.

Furthermore, when the machine is in ditching operation, the soil ground is harder, or when needs promote the mobile machine, the resistance output shaft can also install the walking wheel to labour saving and time saving.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The utility model discloses well machine indicates agricultural operation variable speed system for machinery, can be to plough quick-witted, ditching machine or rural area supervisor a little the technical concept within range, can be right the technical scheme of the utility model carry out multiple simple variant, for example, can suitably do the change with the length of first transmission shaft and second transmission shaft according to the actual production demand. Including the combination of the specific features in any suitable manner such as the combination of a trenching blade, a rotary tillage blade with resistance wheels of different shapes and resistances, or the combination of a seat, a cushion, a trenching blade and a rotary tillage blade. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. A transmission system for an agricultural working machine, comprising:

a transmission including a transmission housing and a transmission assembly mounted within the transmission housing;

the transmission assembly is in transmission connection with the speed change assembly; and

2. The agricultural work machine transmission system of claim 1, wherein the transmission assembly comprises a power input unit, a first transmission shaft, a second transmission shaft, a third transmission shaft and a power output unit, the first transmission shaft is rotatably mounted in the transmission housing, the first transmission shaft is fixedly provided with a first gear and a gear shifting set, the first gear is in transmission connection with the power input unit, the second transmission shaft is arranged in parallel with the first transmission shaft, the second transmission shaft is coaxially provided with the gear shifting set, the gear shifting set can be meshed with the gear shifting set, the second transmission shaft is further fixedly provided with a second gear, the second gear is meshed with a third gear mounted on the third transmission shaft, the third transmission shaft is fixedly provided with a fourth gear, the fourth gear is in transmission fit with the power output unit, and the power output unit is in transmission connection with the rear resistance assembly.

3. The agricultural implement machinery of claim 2, wherein the transmission housing is provided with a hand lever, the hand lever is arranged on the upper portion of the transmission housing and located at a side close to the rear resistance assembly, a shifting block is arranged at an end portion of the hand lever extending into the transmission housing, and the shifting block can drive the transmission gear set to move along the axis direction of the second transmission shaft after the hand lever is operated, so that the transmission gear set can be meshed with different gears of the gear shift set.

4. The transmission system for agricultural work machines of claim 2 or 3, wherein the power input unit comprises an input shaft that is rotatably connected to the transmission housing and an end of the input shaft within the transmission housing engages the first gear.

5. The speed change system for the agricultural working machine according to claim 2 or 3, wherein the inner wall of the speed change gear set is provided with a plurality of gear grooves distributed along the length direction of the second transmission shaft, a limit card is arranged in the second transmission shaft, the limit card is perpendicular to the axis direction of the second transmission shaft, two ends of the limit card extend out of the second transmission shaft and can be clamped in the gear grooves, the speed change gear set comprises a first speed change gear, a second speed change gear and a third speed change gear, and the first speed change gear, the second speed change gear and the third speed change gear are of an integrally formed structure;

when the limit block is clamped into one of the gear slots, the speed change gear set and the gear shifting gear set are in a non-meshing state.

6. The transmission system for agricultural working machines according to claim 1, 2 or 3, wherein the reduction gearbox includes a reduction gearbox body, a bevel gear installed inside the reduction gearbox body, a bevel gear engaged with the bevel gear;

the bevel gear is installed inside the reduction box body through a resistance input shaft, the end part of the resistance input shaft extending out of the reduction box body is a power input end, the power input end is in transmission connection with the transmission assembly, the bevel gear is installed inside the reduction box body through a resistance output shaft, and the end part of the resistance output shaft extends out of the reduction box body and is provided with the resistance wheel.

7. The transmission system of claim 6, wherein the transmission assembly includes a first connecting shaft and universal joint couplings detachably connected to both ends of the first connecting shaft, the universal joint couplings being in driving connection with the power output unit and the resistance input shaft of the transmission assembly, respectively.

8. The agricultural implement machine transmission system of claim 6, wherein the transmission assembly includes a second connecting shaft, a protection pipe, and a universal joint coupling connected to both ends of the second connecting shaft, and the protection pipe is sleeved outside the second connecting shaft.

9. The transmission system according to claim 8, wherein a pedal is fixed to the protective pipe, and a seat or a cushion that can be changed in height is attached to an outside of the reduction case.

10. An agricultural work machine transmission system according to any one of claims 7 to 9, wherein the resistance output shaft may also mount road wheels.