CN210920071U

CN210920071U - Gear shifting control mechanism of mini-tiller

Info

Publication number: CN210920071U
Application number: CN201921956601.4U
Authority: CN
Inventors: 段长青; 康泽力; 李科峰; 刘晓飞
Original assignee: Luoyang Dragon Horse Machinery Co ltd
Current assignee: Luoyang Dragon Horse Machinery Co ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-07-03
Anticipated expiration: 2029-11-13

Abstract

A gear shifting control mechanism of a mini-tiller comprises a control lever, a gear plate, a cutter gear shifting fork shaft and a walking gear shifting fork shaft, wherein the gear plate is arranged on a rack of the mini-tiller; the operating rod is rotationally connected to the rocker arm frame, the rotational axis of the operating rod is perpendicular to the rotational axis of the rocker arm frame, the operating rod is provided with a U-shaped fork, and a walking shifting deflector rod connected with the walking shifting deflector rod is arranged in a U groove of the U-shaped fork; the gear plate is provided with a crossed walking gear groove and a cutter gear groove, the crossed position is a neutral gear shared by a walking shaft and a cutter shaft of the mini-tiller, two operation gears on the cutter gear groove are provided with extension sections towards the direction of keeping away from the neutral gear, and the extension sections correspond to the walking gears of the walking gear groove. The mechanism can avoid the phenomenon that people are injured by misoperation, and improve the safety performance of the mini-tiller.

Description

Gear shifting control mechanism of mini-tiller

Technical Field

The utility model belongs to plough the machine field a little, concretely relates to plough quick-witted operating mechanism of shifting a little.

Background

The 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 tractor can pump water, generate electricity, spray pesticide, spray and other operations when matched with corresponding machines, can also pull the trailer to carry out short-distance transportation, can freely run in the field by the mini-tiller, is convenient for users to use and store, saves the trouble that large agricultural machinery can not enter mountain fields, and is the best choice for vast farmers to replace cattle farming.

The operation of ploughing the machine a little is gone on by operating personnel's hand handlebar, and wherein to the operation of shifting gears of gearbox, mainly rely on long pin push-and-pull or stir the completion at present, and long pin one end is connected with the lever of shifting gears of gearbox, through push-and-pull or stir long pin, realizes the action of lever of shifting gears, accomplishes the transform of keeping off the position. When the mini-tiller is used, the body is provided with two sets of gear shifting systems which are used for respectively controlling the travelling of the mini-tiller and the working of a cutter. Therefore, two long stop levers are installed on the existing mini-tiller to respectively control the work of the two sets of gear shifting systems, so that misoperation can occur, if the mini-tiller is required to be moved backwards, a cutter cannot be reversed, and if the cutter is reversed due to misoperation, operators can be injured. Therefore, the gear shifting control mechanism of the mini-tiller needs to be improved so as to eliminate the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a plough quick-witted operating mechanism that shifts a little, this mechanism pass through the configuration optimization adjustment, adopt two sets of shift systems of an operating rod simultaneous control to carry out the overall arrangement to keeping off the position, avoid appearing the phenomenon that the maloperation wounded the people, improve the security performance of ploughing the machine operation a little.

In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a gear shifting control mechanism of a mini-tiller comprises a control lever, a gear plate, a cutter gear shifting fork shaft and a walking gear shifting fork shaft, wherein the gear plate is arranged on a rack of the mini-tiller; a rocker arm frame is rotatably installed on a rack of the mini-tiller, the rotating axis of the rocker arm frame is vertical to the advancing direction of the mini-tiller, a chute is arranged on the end surface of the rocker arm frame far away from the rotating axis of the rocker arm frame, and a cutter gear shifting deflector rod connected with the cutter gear shifting deflector rod is inserted in the chute; the operating lever is rotationally connected to the rocker arm frame, the rotating axis of the operating lever is perpendicular to the rotating axis of the rocker arm frame, the operating lever is provided with a U-shaped fork, and a walking gear shifting deflector rod connected with the walking gear shifting fork shaft is arranged in a U groove of the U-shaped fork; the gear plate is provided with a walking gear groove and a cutter gear groove which are crossed, the crossed position is a neutral gear shared by a walking shaft and a cutter shaft of the mini-tiller, the upper end and the lower end of the cutter gear groove are respectively an operation first gear and an operation second gear, the operation first gear and the operation second gear are both provided with extension sections extending in the direction far away from the neutral gear, and the extension sections correspond to the walking gears on the walking gear groove in position; the operating end of the operating rod is arranged in the gear groove of the gear plate.

The traveling gear groove and the cutter gear groove are arranged in a cross manner, a reverse gear, a traveling gear and a neutral gear are sequentially arranged on the traveling gear groove from one end, and the traveling gear is a low-speed traveling gear; and the first operation gear and the second operation gear on the cutter gear groove are respectively positioned above and below the neutral gear.

The walking gear groove is also provided with a high-speed walking gear, and the high-speed walking gear and the low-speed walking gear are respectively positioned on two sides of the neutral gear.

The operating lever is provided with a rotating sleeve, and the rotating sleeve is positioned in the rocker arm frame.

And the operating rod is also provided with a positioning mechanism so as to realize the axial positioning of the operating rod on the rocker arm frame.

The positioning mechanism comprises two positioning pieces welded on the operating rod, and the two positioning pieces are respectively positioned above and below the rocker arm frame.

The micro-cultivator frame is provided with a rotating shaft for mounting the rocker arm frame, and the rocker arm frame is axially positioned by using a nut and a gasket.

The rotating shaft is fixed on the rotating shaft fixing frame.

After the operating rod extends out of the rocker arm frame downwards, the end part of the operating rod is also provided with a cotter pin.

The utility model discloses a theory of operation and beneficial effect as follows: the neutral gear position of the position-keeping card of the micro-cultivator corresponds to the neutral gear of the cutter shaft of the micro-cultivator and the neutral gear of the walking shaft, the reverse gear and the positive rotation of the walking shaft are respectively corresponding to the reverse gear and the positive rotation of the walking shaft in the walking position-keeping groove, the positive rotation of different speeds is corresponding to the different walking positions, the rotation direction of the cutter shaft is respectively corresponding to the first position and the second position in the operation in the cutter position-keeping groove, and the requirements of different operations are met.

When the cutter shaft is in a neutral position and the walking shaft of the mini-tiller needs to be shifted, the control rod swings left and right to shift gears, and the control rod is connected with the U-shaped fork, so that the U-shaped fork drives the connected walking shifting rod to move in the direction perpendicular to the side face of the tiller body, and the movement of the walking shifting rod drives the axial movement of the walking shifting fork shaft, so that the travelling and backing at different speeds are realized. Because the operating rod is rotatably connected with the cantilever bracket, the cantilever bracket cannot be moved in the process, and the neutral gear state of the cutter shaft cannot be disturbed.

When the walking axle is in the neutral gear position, and when the operation of shifting gears to the cutter axle needs, the control rod moves from top to bottom, drive cantilever boom tilting, the chute on the cantilever boom can shift the moving about of shifting lever of cutter with the upper and lower activity conversion of cantilever boom, thereby realize the axial activity of cutter shifting fork axle, carry out the switching of different operations, at this in-process because the setting of U type fork, U type fork and walking shift lever are not restricted in upper and lower direction, consequently the walking shift lever can not receive the influence, just can not influence the neutral gear state of walking axle yet.

When the control lever is in the first operation gear or the second operation gear, the control lever can enter the walking gear after being pushed towards the direction of the extension section, so that corresponding operation can be carried out.

When the control lever is in a reverse gear or a high-speed walking gear, the position is not crossed with the cutter gear groove, the control lever cannot be hooked into any operation gear, so that the condition of cutter reversal in a reverse gear state can be avoided, and the safe operation of the mini-tiller is ensured.

Drawings

Fig. 1 is a side view of the present invention;

fig. 2 is a top view of the present invention;

fig. 3 is a rear view of the present invention;

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

FIG. 5 is a schematic view of a gear plate of the present invention;

the labels in the figure are: 1. the control rod, 2, a gear plate, 3, a walking shifting rod, 4, a U-shaped fork, 5, a nut, 6, a positioning piece, 7, a rotating shaft fixing frame, 8, a rocker arm frame, 9, a rotating shaft, 10, a gasket, 11, a rotating sleeve, 12, a split pin, 13, a walking shaft, 14, a cutter shaft, 15, a cutter shifting rod, 16, a cutter shifting fork shaft, 17, a walking shifting fork shaft, 18, an inclined groove, 19, a reverse gear, 20, a low-speed walking gear, 21, a neutral gear, 22, a high-speed walking gear, 23, an operation first gear, 24, an operation second gear, 25 and an extension section.

Detailed Description

The following detailed description of the present invention is provided with reference to the accompanying drawings and examples, but not to be construed as limiting the present invention in any way.

Referring to the attached drawings, the shifting control mechanism of the mini-tiller comprises a control lever 1, a rocker arm frame 8, a walking shifting lever 3, a cutter shifting lever 15 and a gear plate 2, wherein the walking shifting lever 3 and a walking shifting fork shaft 17 of the mini-tiller are welded on the part exposed out of a machine body, the walking shifting lever 3 is perpendicular to the walking shifting fork shaft 17, an outer thread is machined at the end part of the cutter shifting lever 15 and is connected with a thread hole on a cutter shifting fork shaft 16, a nut 5 is used for axially positioning the cutter shifting lever 15, the cutter shifting lever 15 is perpendicular to the cutter shifting fork shaft 16, and the cutter shifting lever 15 and the walking shifting lever 3 are also perpendicular to each other; the rocker arm frame 8 is rotatably arranged on a rack of the mini-tiller, the rotating axis of the rocker arm frame 8 is vertical to the advancing direction of the mini-tiller, a chute 18 is arranged on the end surface of the rocker arm frame 8, which is far away from the rotating axis of the rocker arm frame, and the cutter gear-shifting deflector rod 15 is inserted in the chute 18; the tail end of the operating lever 1 is rotatably connected to the rocker arm frame 8, the rotating axis of the operating lever is perpendicular to the rotating axis of the rocker arm frame 8, the tail end of the operating lever 1 is provided with a U-shaped fork 4, and the walking gear-shifting deflector rod 3 is arranged in a U groove of the U-shaped fork 4; the gear plate 2 is arranged on a frame of the mini-tiller and is provided with a walking gear groove and a cutter gear groove, a reverse gear 19, a low-speed walking gear 20, a neutral gear 21 and a high-speed walking gear 22 are sequentially arranged on the walking gear groove, a first operation gear 23, a neutral gear 21 and a second operation gear 24 are sequentially arranged on the cutter gear groove from top to bottom, the positions of the walking gear groove and the neutral gear 21 of the cutter gear groove are overlapped, two operation gears on the cutter gear groove are both provided with extension sections 25 extending in the direction away from the neutral gear 21, and the positions of the extension sections 25 and the low-speed walking gear 20 on the walking gear groove correspond; the operating end of the operating rod 1 is arranged in the gear groove of the gear plate 2.

The above "position corresponds" means that the above-mentioned extension 25 is located above and below the low-speed travel gear 20 on the travel gear groove, i.e. the position of the extension 25 is also the low-speed travel gear 20. The low-speed walking gear 20 is a walking gear of a normal speed when the mini-tiller operates.

The operating rod 1 is further provided with a positioning mechanism to axially position the operating rod 1 on the rocker arm frame 8, the positioning mechanism comprises two positioning pieces 6 welded at the tail end of the operating rod 1, and the two positioning pieces 6 are respectively positioned above and below the rocker arm frame 8.

The mini-tiller frame is provided with a rotating shaft 9 for mounting the rocker arm frame 8, the rocker arm frame 8 is axially positioned by a nut and a gasket 10, and the rotating shaft 9 is fixed on a rotating shaft fixing frame 7.

The tail end of the operating lever 1 is sleeved with a rotating sleeve 11, the rotating sleeve 11 is positioned in the rocker arm frame 8, and the tail end of the operating lever 1 is provided with a cotter pin 12.

The first operation gear 23 corresponds to ditching operation of the micro-cultivator, and the second operation gear 24 corresponds to rotary tillage operation of the micro-cultivator.

In the following, different gear engaging states are described so as to more clearly describe the technical solution of the present invention, wherein the directions "up", "down", "left" and "right" all refer to the directions shown in fig. 5.

When the cutter shaft 14 is in the neutral position, the movable stroke of the operating lever 1 is in the walking gear groove, at this time, if the walking shaft 13 of the mini-tiller needs to be shifted, the operating lever 1 is swung left and right, and the operating lever 1 is connected with the U-shaped fork 4, so that the U-shaped fork 4 drives the connected walking shift lever 3 to move in the direction perpendicular to the side face of the tiller body, and the movement of the walking shift lever 3 drives the axial movement of the walking shift fork shaft 17, so that the traveling and the reversing at different speeds are realized, for example, from the reverse gear 19, the operating lever 1 keeps the same height, and can be sequentially engaged with the low-speed walking gear 20, the neutral gear 21 and the high-speed walking gear 22 rightward, and conversely, the operating lever 1 can be sequentially engaged with the high-speed walking gear 22, the neutral gear 21, the low-speed walking gear 20 and the. The gear change of the tool shaft 14 is realized by the up-and-down movement of the operating lever 1, and in the above process, the operating lever 1 is always at the height corresponding to the neutral position of the tool gear groove (i.e. in the walking gear groove), so that the tool shaft 14 is always in neutral when the operating lever 1 shifts gears for the walking shaft 13.

When the traveling shaft 13 is in a neutral position, the movable stroke of the operating lever 1 is in the cutter gear groove, and at this time, if the cutter shaft 14 needs to be shifted, the operating lever 1 is moved up and down to drive the cantilever bracket 8 to rotate up and down, and the inclined groove 18 on the cantilever bracket 8 can convert the up and down movement of the cantilever bracket 8 into the left and right movement of the cutter shift lever 15, so that the axial movement of the cutter shift fork shaft 16 is realized, and different operations are switched. When the operating lever 1 is in the first operating gear 23 or the second operating gear 24, the low-speed travel gear 20 is engaged when the operating lever 1 is pushed to the left extension 25, so that normal travel operation can be performed.

In the embodiment, the first operating gear 23 corresponds to ditching operation, the second operating gear 24 corresponds to rotary tillage operation, when the operating lever 1 pushes up the first operating gear 23, the operating lever 1 is pulled leftwards to the low-speed traveling gear 20, ditching operation can be performed, and when the operating lever 1 pushes down the second operating gear 20, the operating lever 1 is pulled leftwards to the low-speed traveling gear 20, rotary tillage operation can be performed.

As can be seen from fig. 5, the operating lever 1 must pass through the neutral position 21 to be able to engage the first operating position 23 and the second operating position 24, so that when the mini-tiller is in reverse (engaging the neutral position 19) or is traveling at high speed (engaging the high-speed traveling position 22), neither operating position is engaged, thereby ensuring safe operation.

As one of the technical scheme of the utility model's deformation, wherein walking axle 13 can not carry out high-speed walking, only a walking speed, the fender position tablet 2 that corresponds like this also need not distinguish and set up low-speed walking and keep off position 20 and high-speed walking and keep off position 22, only set up the walking keep off the position can, other with the utility model discloses a technical scheme is the same.

Claims

1. The utility model provides a plough quick-witted operating mechanism that shifts a little, includes control rod (1), keeps off position tablet (2), cutter shift fork axle (16) and walking shift fork axle (17), keeps off position tablet (2) and sets up in ploughing a little the frame, its characterized in that: a rocker arm frame (8) is rotatably installed on a rack of the mini-tiller, the rotating axis of the rocker arm frame (8) is vertical to the advancing direction of the mini-tiller, a chute (18) is arranged on the end surface, far away from the rotating axis, of the rocker arm frame (8), and a cutter gear shifting deflector rod (15) connected with the cutter gear shifting fork shaft (16) is inserted in the chute (18); the operating rod (1) is rotatably connected to the rocker arm frame (8), the rotating axis of the operating rod is perpendicular to the rotating axis of the rocker arm frame (8), a U-shaped fork (4) is arranged on the operating rod (1), and a walking gear-shifting deflector rod (3) connected with the walking gear-shifting deflector rod shaft (17) is arranged in a U groove of the U-shaped fork (4); the gear plate (2) is provided with a crossed micro-cultivator walking gear groove and a cutter working gear groove, the crossed position is a neutral gear (21) shared by a micro-cultivator walking shaft (13) and a cutter shaft (14), the upper end and the lower end of the cutter working gear groove are respectively an operation first gear (23) and an operation second gear (24), the operation first gear (23) and the operation second gear (24) are both provided with extension sections (25) extending in the direction far away from the neutral gear (21), and the positions of the extension sections (25) and the positions of the micro-cultivator walking gear groove upper walking gears correspond to each other; the operating end of the operating lever (1) is arranged in the gear groove of the gear plate (2).

2. The gear shifting operating mechanism of the micro-cultivator of claim 1, wherein: the micro-cultivator walking gear groove and the cutter working gear groove are arranged in a cross manner, a reverse gear (19), a walking gear and a neutral gear (21) are sequentially arranged on the micro-cultivator walking gear groove from one end, and the walking gear is a low-speed walking gear (20); and a first operation gear (23) and a second operation gear (24) on the tool operation gear groove are respectively positioned above and below the neutral gear (21).

3. The gear shifting operating mechanism of the micro-cultivator of claim 1, wherein: the travelling gear groove of the mini-tiller is also provided with a high-speed travelling gear (22), and the high-speed travelling gear (22) and the low-speed travelling gear (20) are respectively positioned on two sides of the neutral gear (21).

4. The gear shifting operating mechanism of the micro-cultivator of claim 1, wherein: the operating rod (1) is provided with a rotating sleeve (11), and the rotating sleeve (11) is positioned in the rocker arm frame (8).

5. The gear shifting operating mechanism of the micro-cultivator of claim 4, wherein: and the operating lever (1) is also provided with a positioning mechanism so as to realize the axial positioning of the operating lever (1) on the rocker arm frame (8).

6. The gear shifting operating mechanism of the micro-cultivator of claim 5, wherein: the positioning mechanism comprises two positioning sheets (6) welded on the operating rod (1), and the two positioning sheets (6) are respectively positioned above and below the rocker arm frame (8).

7. The gear shifting operating mechanism of the micro-cultivator of claim 1, wherein: a rotating shaft (9) for installing a rocker arm frame (8) is arranged on the frame of the mini-tiller, and the rocker arm frame (8) is axially positioned by a nut and a gasket (10).

8. The gear shifting operating mechanism of the micro-cultivator of claim 7, wherein: the rotating shaft (9) is fixed on the rotating shaft fixing frame (7).

9. The gear shifting operating mechanism of the micro-cultivator of claim 1, wherein: after the operating rod (1) extends out of the rocker arm frame (8) downwards, a cotter pin (12) is further arranged at the end part of the operating rod (1).