阅读说明：本技术 折叠式水田耕整机 (Folding paddy field tillage machine ) 是由 周金俊 马立新 唐晓燕 王超柱 于 2020-07-06 设计创作，主要内容包括：本发明公开了一种折叠式水田耕整机,包括机架、传动系统、悬挂总成、拖板总成、主拖板调节机构；主拖板调节机构包括中间主拖板调节机构、侧主拖板调节机构；第一销轴竖置,下端向正后方倾斜,第一销轴的中心轴线与竖直垂线的夹角为锐角；侧主拖板、副拖板之间设有第二拉伸油缸；第二销轴竖置,第二销轴的中心轴线与第一销轴中心轴线同在前后方向的垂直平面内,当需要折叠时,第二销轴、第一销轴的中心轴线同轴；进一步改进在于：悬挂总成上设有导泥板组件。本发明行走或运输时侧机架、侧主拖板向斜上方折叠,占地面积小,能将胎痕两侧高出地面的泥土导入胎痕中,显著提高耕整后地面土壤一致性,使用时,振动小,工作平稳。(The invention discloses a folding paddy field tillage machine, which comprises a frame, a transmission system, a suspension assembly, a planker assembly and a main planker adjusting mechanism, wherein the frame is provided with a frame; the main carriage adjusting mechanism comprises a middle main carriage adjusting mechanism and a side main carriage adjusting mechanism; the first pin shaft is vertically arranged, the lower end of the first pin shaft inclines to the right back, and the included angle between the central axis of the first pin shaft and the vertical line is an acute angle; a second stretching oil cylinder is arranged between the side main carriage and the auxiliary carriage; the second pin shaft is vertically arranged, the central axis of the second pin shaft and the central axis of the first pin shaft are in the same vertical plane in the front-back direction, and when the folding is needed, the central axes of the second pin shaft and the first pin shaft are coaxial; the further improvement lies in that: and a mud guide plate component is arranged on the suspension assembly. When the side machine frame and the side main planker are used for walking or transporting, the side machine frame and the side main planker are folded obliquely upwards, the occupied area is small, soil with two sides higher than the ground can be guided into the tire marks, the consistency of the soil on the ground after tillage is obviously improved, and the side machine frame and the side main planker are small in vibration and stable in work when in use.)

1. A folding paddy field tillage machine comprises a frame, a transmission system, a suspension assembly (4), a planker assembly and a main planker adjusting mechanism;

the frame comprises a middle frame (5.1) and side frames (5.2) hinged to two sides of the middle frame (5.1) through a first pin shaft (5.3); in an unfolded state, the side frame (5.2) is transversely and horizontally arranged perpendicular to the front-back movement direction of the foldable paddy field tillage machine, and a rotary tillage mechanism is arranged below the side frame (5.2); the side frame (5.2) comprises a first supporting pipe (5.2.1) and a first transverse plate (5.2.2) which are transversely and horizontally arranged and are vertical to the front-back movement direction of the foldable paddy field tillage machine under an unfolded state; the first supporting tube (5.2.1) and the first transverse plate (5.2.2) are opposite up and down and are fixedly connected together;

a first stretching oil cylinder (5.4) is arranged between the middle frame (5.1) and the side frame (5.2);

the carriage assembly comprises a main carriage, a connecting plate and two auxiliary carriages (6.3); the main planker comprises a middle main planker (6.1.1) and side main plankers (6.1.2) hinged to two sides of the middle main planker (6.1.1) through second pin shafts (6.1.3), and the other sides of the side main plankers (6.1.2) are hinged to auxiliary plankers (6.3);

the connecting plates comprise a middle connecting plate (6.2.1) and side connecting plates (6.2.2) at two sides of the middle connecting plate (6.2.1); the middle main carriage (6.1.1) is horizontally arranged, arranged at the rear side of the lower part of the middle rack (5.1) and connected with the middle rack (5.1) through a middle connecting plate (6.2.1); the side main planker (6.1.2) is horizontally arranged when the frame is in an unfolded state, is arranged at the rear side of the lower part of the side frame (5.2), and is connected with the side frame (5.2) through a side connecting plate (6.2.2);

the suspension assembly (4) is fixedly connected to the middle frame (5.1); the suspension assembly (4) comprises two connecting plates (4.1) which are fixedly connected to the front side of the middle rack (5.1) and are arranged transversely at intervals, and a connecting frame (4.2) which is arranged between the two connecting plates (4.1) and is used for being connected with the travelling mechanism; the outer sides of the two connecting plates (4.1) are respectively provided with a cylindrical supporting piece (4.3); the supporting piece (4.3) is transversely and horizontally arranged perpendicular to the front-back movement direction of the foldable paddy field tillage machine and is fixedly connected to the connecting plate (4.1);

the transmission system comprises a central gearbox (3.1) and side gearboxes (3.2), wherein the central gearbox (3.1) is arranged in the middle of the middle rack (5.1), and the side gearboxes (3.2) are fixedly connected to the side surfaces of the side racks (5.2);

the output shaft of the central gearbox (3.1) is connected with the input shaft of the side gearbox (3.2) in the first supporting pipe (5.2.1) through a jaw clutch (3.3); the jaw clutch (3.3) comprises a first half clutch (3.3.1) sleeved and fixedly connected with the end part of the output shaft of the central gearbox (3.1) and a second half clutch (3.3.2) sleeved and slidably connected with the end part of the input shaft of the side gearbox (3.2); a plurality of first teeth (3.3.1.1) and second teeth (3.3.2.1) which are uniformly distributed are respectively arranged on the opposite end surfaces of the first half clutch (3.3.1) and the second half clutch (3.3.2);

the method is characterized in that:

the main carriage adjusting mechanism comprises a middle main carriage adjusting mechanism (14.1) and a side main carriage adjusting mechanism (14.2); the middle main carriage adjusting mechanism (14.1) is arranged between the middle frame (5.1) and the middle main carriage (6.1.1); the side main carriage adjusting mechanism (14.2) is arranged between the side frame (5.2) and the side main carriage (6.1.2);

the first pin shaft (5.3) is vertically arranged, the lower end of the first pin shaft inclines towards the front rear direction, and an included angle between the central axis of the first pin shaft (5.3) and a vertical line is an acute angle;

a second stretching oil cylinder (6.4) is arranged between the side main carriage (6.1.2) and the auxiliary carriage (6.3); the second pin shaft (6.1.3) is vertically arranged, the central axis of the second pin shaft (6.1.3) and the central axis of the first pin shaft (5.3) are in the same vertical plane in the front-back direction, and when the folding is needed, the central axes of the second pin shaft (6.1.3) and the first pin shaft (5.3) are coaxial.

2. The folding paddy field tillage machine of claim 1, wherein: the side main carriage adjusting mechanism (14.2) comprises a side main carriage adjusting mechanism connecting seat (14.2.1), a side main carriage adjusting mechanism driving oil cylinder (14.2.2), a first cross rod (14.2.3) and a first vertical rod (14.2.4); the side main planker adjusting mechanism connecting seat (14.2.1) is fixedly connected to the first supporting pipe (5.2.1); the first cross rod (14.2.3) is arranged in the front-back direction, the front end of the first cross rod is hinged to the upper part of the rear side of the side main carriage adjusting mechanism connecting seat (14.2.1), the upper end of the first vertical rod (14.2.4) is fixedly connected with the rear end of the first cross rod (14.2.3), and the lower end of the first vertical rod is hinged to the side main carriage (6.1.2); the tail end of the oil cylinder of the driving oil cylinder (14.2.2) of the side main carriage adjusting mechanism is hinged to the lower part of the rear side of the connecting seat (14.2.1) of the side main carriage adjusting mechanism, and the end part of the piston rod is hinged to the connecting part of a first vertical rod (14.2.4) and a first cross rod (14.2.3);

the middle main carriage adjusting mechanism (14.1) comprises a second cross rod (14.1.1), a second vertical rod (14.1.2) and a gas spring (14.1.3); the second cross rod (14.1.1) is arranged in the front-back direction, and the front end of the second cross rod is hinged to the rear side of the middle rack (5.1); the upper end of the second vertical rod (14.1.2) is hinged with the rear end of the second cross rod (14.1.1), and the lower end is hinged with the middle main carriage (6.1.1); one end of the gas spring (14.1.3) is hinged with the middle frame (5.1), and the other end is hinged with the second cross bar (14.1.1).

3. The folding paddy field tillage machine of claim 1 or 2, wherein: a mud guide plate assembly is arranged on the suspension assembly (4); the mud guide plate assembly comprises a left mud guide plate (15.1), a right mud guide plate (15.2) and two mud guide plate connecting seats (15.3); the two mud guide plate connecting seats (15.3) are respectively sleeved and fixedly connected on the supporting pieces (4.3) at the outer sides of the two connecting plates (4.1); the upper ends of the left mud guide plate (15.1) and the right mud guide plate (15.2) are respectively and fixedly connected to the left mud guide plate connecting seat and the right mud guide plate connecting seat (15.3); the left mud guide plate (15.1) and the right mud guide plate (15.2) are respectively provided with vertically arranged mud guide plates which are opposite at intervals in the transverse direction; the mud guide plates of the left mud guide plate (15.1) and the right mud guide plate (15.2) are inclined outwards from back to front and from top to bottom, so that a splayed shape from back to front when viewed from top to bottom and a splayed shape from top to bottom when viewed from back to front are formed.

4. The folding paddy field tillage machine of claim 3, wherein: the front side of the mud guide plate connecting seat (15.3) is provided with a plurality of holes which are arranged at equal intervals in the vertical direction, the upper parts of the left mud guide plate (15.1) and the right mud guide plate (15.2) are respectively provided with a plurality of holes corresponding to the holes on the front side of the mud guide plate connecting seat (15.3), and the left mud guide plate (15.1) and the right mud guide plate (15.2) are fixedly connected with the mud guide plate connecting seat (15.3) through the corresponding holes.

5. The folding paddy field tillage machine of claim 4, wherein: a piston rod of the driving oil cylinder (14.2.2) of the side main carriage adjusting mechanism is sleeved with a first compression spring (14.2.5); an energy accumulator (14.2.6) is arranged in an oil inlet pipeline of the driving oil cylinder (14.2.2) of the side main carriage adjusting mechanism.

6. The folding paddy field tillage machine of claim 5, wherein: the first teeth (3.3.1.1) on the end face of the first half clutch (3.3.1) and the second teeth (3.3.2.1) on the end face of the second half clutch (3.3.2) are trapezoidal teeth which are wider as being far away from the end face; the second compression spring is sleeved at the end part of the input shaft of the side gearbox (3.2) sleeved with the second half clutch (3.3.2).

7. The folding paddy field tillage machine of claim 6, wherein: a second compression spring which axially presses the second half clutch (3.3.2) to the first half clutch (3.3.1) is arranged at one end, away from the second tooth (3.3.2.1), of the second half clutch (3.3.2); the second compression spring is sleeved at the end part of the input shaft of the side gearbox (3.2) sleeved with the second half clutch (3.3.2).

Technical Field

The invention relates to the technical field of agricultural machinery, in particular to a paddy field tillage machine.

Background

With the development of agriculture, paddy field tillage machines are widely applied to agricultural production. The paddy field tillage machine comprises a frame, a planker assembly and a main planker adjusting mechanism, wherein the planker assembly is long in transverse dimension, is inconvenient to walk or transport, cannot walk at all when meeting a road with a narrow width, and seriously influences the use and popularization of the tillage machine, so that people are researching and improving the paddy field tillage machine into a folding paddy field tillage machine. The existing folding paddy field tillage machine assembly folds the frame and the planker backwards during walking or transportation. The main drawbacks of such a rack are: the size of the folded product in the front-back direction is longer, and the occupied area is larger.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the folding paddy field tillage machine which can obviously reduce the size of the frame and the planker in the front-back direction after being folded, thereby obviously reducing the occupied area.

The invention achieves the technical aim through the following technical scheme.

A folding paddy field tillage machine comprises a frame, a transmission system, a suspension assembly, a planker assembly and a main planker adjusting mechanism; the rack comprises a middle rack and side racks hinged to two sides of the middle rack through a first pin shaft; in an unfolded state, the side frame is transversely and horizontally arranged perpendicular to the front-back movement direction of the foldable paddy field tillage machine, and a rotary tillage mechanism is arranged below the side frame; the side frame comprises a first supporting pipe and a first transverse plate which are transversely and horizontally arranged and are vertical to the front-back movement direction of the foldable paddy field tillage machine under an unfolded state; the first supporting pipe and the first transverse plate are opposite up and down and are fixedly connected together; a first stretching oil cylinder is arranged between the middle frame and the side frame; the carriage assembly comprises a main carriage, a connecting plate and two auxiliary carriages; the main carriage comprises a middle main carriage and side main carriages hinged to two sides of the middle main carriage through a second pin shaft, and the other side of the side main carriage is hinged to an auxiliary carriage; the connecting plates comprise a middle connecting plate and side connecting plates on two sides of the middle connecting plate; the middle main carriage is transversely arranged horizontally, is arranged at the rear side of the lower part of the middle frame and is connected with the middle frame through a middle connecting plate; the side main planker is transversely horizontally arranged when the side main planker is in an unfolded state, is arranged at the rear side of the lower part of the side frame and is connected with the side frame through a side connecting plate; the suspension assembly is fixedly connected to the middle rack; the suspension assembly comprises two connecting plates which are fixedly connected to the front side of the middle rack and are arranged transversely at intervals, and a connecting frame which is arranged between the two connecting plates and is used for connecting with the travelling mechanism; the outer sides of the two connecting plates are respectively provided with a cylindrical supporting piece; the supporting piece is transversely and horizontally arranged perpendicular to the front-back movement direction of the foldable paddy field tillage machine and is fixedly connected to the connecting plate; the transmission system comprises a central gearbox and a side gearbox, the central gearbox is arranged in the middle of the middle rack, and the side gearbox is fixedly connected to the side surface of the side rack; the output shaft of the central gearbox is connected with the input shaft of the gearbox at the middle side of the first supporting pipe through a jaw clutch; the jaw clutch comprises a first half clutch sleeved and fixedly connected to the end part of the output shaft of the central gearbox and a second half clutch sleeved and slidably connected to the end part of the input shaft of the side gearbox; a plurality of first teeth and second teeth which are uniformly distributed are respectively arranged on the opposite end surfaces of the first half clutch and the second half clutch; the improvement is that: the main carriage adjusting mechanism comprises a middle main carriage adjusting mechanism and a side main carriage adjusting mechanism; the middle main carriage adjusting mechanism is arranged between the middle frame and the middle main carriage; the side main carriage adjusting mechanism is arranged between the side frame and the side main carriage; the first pin shaft is arranged vertically, the lower end of the first pin shaft inclines towards the right back, and an included angle between the central axis of the first pin shaft and a vertical line is an acute angle; a second stretching oil cylinder is arranged between the side main carriage and the auxiliary carriage; the second pin shaft is vertically arranged, the central axis of the second pin shaft and the central axis of the first pin shaft are in the same vertical plane in the front-back direction, and when the folding is needed, the central axes of the second pin shaft and the first pin shaft are coaxial.

The further improvement lies in that: the side main carriage adjusting mechanism comprises a side main carriage adjusting mechanism connecting seat, a side main carriage adjusting mechanism driving oil cylinder, a first cross rod and a first vertical rod; the side main planker adjusting mechanism connecting seat is fixedly connected to the first supporting pipe; the first cross rod is arranged in the front-back direction, the front end of the first cross rod is hinged to the upper portion of the rear side of the connecting seat of the side main planker adjusting mechanism, the upper end of the first vertical rod is fixedly connected with the rear end of the first cross rod, and the lower end of the first vertical rod is hinged to the side main planker; the tail end of the oil cylinder of the driving oil cylinder of the side main carriage adjusting mechanism is hinged to the lower part of the rear side of the connecting seat of the side main carriage adjusting mechanism, and the end part of the piston rod is hinged to the connecting part of the first vertical rod and the first cross rod; the middle main carriage adjusting mechanism comprises a second cross rod, a second vertical rod and an air spring; the second cross rod is arranged in the front-back direction, and the front end of the second cross rod is hinged to the rear side of the middle rack; the upper end of the second vertical rod is hinged with the rear end of the second cross rod, and the lower end of the second vertical rod is hinged with the middle main carriage; one end of the air spring is hinged with the middle rack, and the other end of the air spring is hinged with the second cross rod.

The further improvement lies in that: a mud guide plate assembly is arranged on the suspension assembly; the mud guide plate assembly comprises a left mud guide plate, a right mud guide plate and two mud guide plate connecting seats; the two mud guide plate connecting seats are respectively sleeved and fixedly connected on the supporting pieces on the outer sides of the two connecting plates; the upper ends of the left mud guide plate and the right mud guide plate are respectively and fixedly connected to the left mud guide plate connecting seat and the right mud guide plate connecting seat; the left mud guide plate and the right mud guide plate are respectively provided with vertically arranged mud guide plates which are opposite at intervals in the transverse direction; the mud guide plates of the left mud guide plate and the right mud guide plate are inclined outwards from back to front and from top to bottom, and form a splayed shape from back to front when viewed from top to bottom and a splayed shape from top to bottom when viewed from back to front.

The further improvement lies in that: the front side of the mud guide plate connecting seat is provided with a plurality of holes which are equidistantly arranged in the vertical direction at intervals, the upper parts of the left mud guide plate and the right mud guide plate are respectively provided with a plurality of holes corresponding to the holes on the front side of the mud guide plate connecting seat, and the left mud guide plate, the right mud guide plate and the mud guide plate connecting seat are fixedly connected through the corresponding holes.

The further improvement lies in that: a piston rod of the driving oil cylinder of the side main carriage adjusting mechanism is sleeved with a first compression spring; and an energy accumulator is arranged in an oil inlet pipeline of the driving oil cylinder of the side main carriage adjusting mechanism.

The further improvement lies in that: the first teeth on the end face of the first half clutch and the second teeth on the end face of the second half clutch are trapezoidal teeth which are wider as the distance from the end face is larger; and the second compression spring is sleeved at the end part of the input shaft of the side gearbox sleeved with the second half clutch.

The further improvement lies in that: one end of the second half clutch, which is far away from the second tooth, is provided with a second compression spring which axially presses the second half clutch to the first half clutch; and the second compression spring is sleeved at the end part of the input shaft of the side gearbox sleeved with the second half clutch.

Compared with the prior art, the invention has the following positive effects:

1. the main carriage adjusting mechanism comprises a middle main carriage adjusting mechanism and a side main carriage adjusting mechanism; the middle main carriage adjusting mechanism is arranged between the middle frame and the middle main carriage; the side main carriage adjusting mechanism is arranged between the side frame and the side main carriage; the first pin shaft is vertically arranged, the lower end of the first pin shaft inclines to the right back, and the included angle between the central axis of the first pin shaft and the vertical line is an acute angle; a second stretching oil cylinder is arranged between the side main carriage and the auxiliary carriage; the second pin shaft is vertically arranged, the central axis of the second pin shaft and the central axis of the first pin shaft are in the same vertical plane in the front-back direction, and when the folding is needed, the central axes of the second pin shaft and the first pin shaft are coaxial. Thus, when the foldable side frame is in a folded state, the side frame drives the side main planker to be folded towards the rear upper side, so that the size of the folded side main planker in the front-rear direction is remarkably reduced, and the occupied area is remarkably reduced.

2. The side main carriage adjusting mechanism comprises a side main carriage adjusting mechanism connecting seat, a side main carriage adjusting mechanism driving oil cylinder, a first cross rod and a first vertical rod, and the angle of the side main carriage can be conveniently adjusted through the side main carriage adjusting mechanism driving oil cylinder.

3. The middle main carriage adjusting mechanism comprises a second cross rod, a second vertical rod and an air spring, and the middle main carriage is always in a tensioning state under the action of the air spring and keeps synchronous with the side main carriages.

4. The soil guide plate assemblies are arranged, the soil guide plates of the left soil guide plate and the right soil guide plate are inclined outwards from back to front and from top to bottom, and form a splayed shape from back to front when viewed from top to bottom and a splayed shape from top to bottom when viewed from back to front.

5. The mud guide plate connecting seats are respectively sleeved and fixedly connected on the supporting pieces on the outer sides of the two connecting plates, so that the positions of the mud guide plate connecting seats can be transversely adjusted on the supporting pieces as required, and the transverse positions of the left mud guide plate and the right mud guide plate can be adjusted as required.

6. The front side of the mud guide plate connecting seat is provided with a plurality of holes which are arranged at equal intervals in the vertical direction, the upper parts of the left mud guide plate and the right mud guide plate are respectively provided with a plurality of holes corresponding to the holes in the front side of the mud guide plate connecting seat, and the left mud guide plate, the right mud guide plate and the mud guide plate connecting seat are fixedly connected through the corresponding holes, so that the upper and lower positions of the left mud guide plate and the right mud guide plate can be adjusted as required.

7. A piston rod of a driving oil cylinder of the side main carriage adjusting mechanism is sleeved with a first compression spring, so that vibration during flattening can be remarkably reduced.

8. An energy accumulator is arranged in an oil inlet pipeline of the driving oil cylinder of the side main carriage adjusting mechanism, when the side main carriage adjusting mechanism is used for plowing, energy is accumulated when an oil inlet of the driving oil cylinder of the side main carriage adjusting mechanism is increased, and pressure is released when the pressure is reduced, so that the effects of stabilizing pressure and saving energy are achieved.

9. The first teeth on the end face of the first half clutch and the second teeth on the end face of the second half clutch are trapezoidal teeth which are far away from the end face and are wider, so that when the foldable paddy field tillage machine is used for tillage, the first teeth of the first half clutch and the second teeth of the second half clutch of the jaw clutch are always wedged together and cannot be disengaged, and the foldable paddy field tillage machine is guaranteed to be normally used.

10. One end of the second half clutch, which is far away from the second teeth, is provided with a second compression spring which axially presses the second half clutch to the first half clutch, so that on one hand, when the foldable paddy field tillage machine is converted from a folded state to an unfolded state, the first half clutch and the second half clutch are elastically jointed and not rigidly jointed, and the jaw clutch is effectively protected; in the second aspect, after the first half clutch and the second half clutch are engaged, the second compression spring axially presses the second half clutch toward the first half clutch, and the anti-falling function is achieved.

Drawings

Fig. 1 is a schematic view of the present invention from a front to back perspective.

Fig. 2 is a schematic structural view from back to front of the present invention.

Fig. 3 is a schematic view of the present invention from a front to back perspective.

Fig. 4 is an enlarged view of part i of fig. 3.

FIG. 5 is a schematic view of the dog clutch of the present invention in an engaged state.

Fig. 6 is a schematic diagram of the first half clutch of the present invention.

Fig. 7 is a view taken along direction a of fig. 6.

Fig. 8 is a schematic view of the second clutch half according to the present invention.

Fig. 9 is a left side view of fig. 8.

Fig. 10 is an enlarged view of part ii of fig. 1.

Fig. 11 is a schematic view of the present invention in a folded state.

Detailed Description

The invention is further illustrated with reference to the following examples in accordance with the accompanying drawings.

The folding paddy field tillage machine shown in the attached drawing comprises a frame, a transmission system, a suspension assembly 4, a planker assembly and a main planker adjusting mechanism.

The frame comprises a middle frame 5.1 and side frames 5.2 hinged to two sides of the middle frame 5.1 through a first pin shaft 5.3; in an unfolded state, the side frame 5.2 is transversely and horizontally arranged perpendicular to the front-back movement direction of the foldable paddy field tillage machine, and a rotary tillage mechanism is arranged below the side frame 5.2; the side frame 5.2 comprises a first supporting pipe 5.2.1 and a first transverse plate 5.2, wherein the first supporting pipe is transversely and horizontally arranged and is vertical to the front-back movement direction of the foldable paddy field tillage machine under an unfolded state; the first supporting tube 5.2.1 and the first transverse plate 5.2.2 are opposite and fixedly connected together. The first pin shaft 5.3 is vertically arranged, the lower end of the first pin shaft inclines to the right back, and the included angle between the central axis of the first pin shaft 5.3 and the vertical line is an acute angle.

A first stretching oil cylinder 5.4 is arranged between the middle frame 5.1 and the side frame 5.2.

The carriage assembly comprises a main carriage, a connecting plate and two auxiliary carriages 6.3.

The main carriage comprises a middle main carriage 6.1.1 and side main carriages 6.1.2 hinged to two sides of the middle main carriage 6.1.1 through a second pin shaft 6.1.3, the other sides of the side main carriages 6.1.2 are hinged to auxiliary carriages 6.3, and a second stretching oil cylinder 6.4 is arranged between the side main carriages 6.1.2 and the auxiliary carriages 6.3.

The connecting plates comprise a middle connecting plate 6.2.1 and side connecting plates 6.2.2 at two sides of the middle connecting plate 6.2.1; the middle main planker 6.1.1 is horizontally arranged, arranged at the rear side of the lower part of the middle frame 5.1 and connected with the middle frame 5.1 through a middle connecting plate 6.2.1; the side main carriage 6.1.2 is horizontally arranged when the frame is in an unfolded state, is arranged at the rear side of the lower part of the side frame 5.2 and is connected with the side frame 5.2 through a side connecting plate 6.2.2.

The suspension assembly 4 is fixedly connected to the middle frame 5.1; the suspension assembly 4 comprises two connecting plates 4.1 which are fixedly connected with the front side of the middle frame 5.1 and are arranged at intervals in the transverse direction and a connecting frame 4.2 which is arranged between the two connecting plates 4.1 and is used for being connected with the travelling mechanism; the outer sides of the two connecting plates 4.1 are respectively provided with a cylindrical supporting piece 4.3; the supporting piece 4.3 is transversely horizontally arranged perpendicular to the front-back movement direction of the folding paddy field tillage machine and fixedly connected to the connecting plate 4.1.

The transmission system comprises a central gearbox 3.1 and a side gearbox 3.2, wherein the central gearbox 3.1 is arranged in the middle of the middle rack 5.1, and the side gearbox 3.2 is fixedly connected to the side surface of the side rack 5.2.

The output shaft of the central gearbox 3.1 is connected with the input shaft of the gearbox 3.2 at the middle side of the first supporting pipe 5.2.1 through a jaw clutch 3.3; the jaw clutch 3.3 comprises a first half clutch 3.3.1 sleeved and fixedly connected with the end part of the output shaft of the central gearbox 3.1 and a second half clutch 3.3.2 sleeved and slidably connected with the end part of the input shaft of the side gearbox 3.2; the opposite end surfaces of the first half clutch 3.3.1 and the second half clutch 3.3.2 are respectively provided with 3 evenly distributed first teeth 3.3.1.1 and second teeth 3.3.2.1 (in other embodiments, the opposite end surfaces of the first half clutch 3.3.1 and the second half clutch 3.3.2 are respectively provided with 2 or more than 3 evenly distributed first teeth 3.3.1.1 and second teeth 3.3.2.1). The first teeth 3.3.1.1 on the end surface of the first half clutch 3.3.1 and the second teeth 3.3.2.1 on the end surface of the second half clutch 3.3.2 are trapezoidal teeth which are wider as the distance from the end surface is larger; the second compression spring is sleeved at the end part of the input shaft of the side gearbox 3.2 sleeved with the second half clutch 3.3.2.

The end of the second clutch half 3.3.2 remote from the second tooth 3.3.2.1 is provided with a second compression spring which axially presses the second clutch half 3.3.2 towards the first clutch half 3.3.1; the second compression spring is sleeved at the end part of the input shaft of the side gearbox 3.2 sleeved with the second half clutch 3.3.2.

The main carriage adjusting mechanism comprises a middle main carriage adjusting mechanism 14.1 and a side main carriage adjusting mechanism 14.2.

The middle main carriage adjusting mechanism 14.1 is arranged between the middle frame 5.1 and the middle main carriage 6.1.1; the middle main carriage adjusting mechanism 14.1 comprises a second cross bar 14.1.1, a second vertical bar 14.1.2 and a gas spring 14.1.3; the second cross rod 14.1.1 is arranged in the front-back direction, and the front end of the second cross rod is hinged to the rear side of the middle rack 5.1; the upper end of the second vertical rod 14.1.2 is hinged with the rear end of the second cross rod 14.1.1, and the lower end is hinged with the middle main planker 6.1.1; one end of the gas spring 14.1.3 is hinged to the intermediate frame 5.1 and the other end is hinged to the second cross bar 14.1.1.

The side main carriage adjusting mechanism 14.2 is arranged between the side frame 5.2 and the side main carriage 6.1.2, and the side main carriage adjusting mechanism 14.2 comprises a side main carriage adjusting mechanism connecting seat 14.2.1, a side main carriage adjusting mechanism driving oil cylinder 14.2.2, a first cross rod 14.2.3 and a first vertical rod 14.2.4; the side main carriage adjusting mechanism connecting seat 14.2.1 is fixedly connected on the first supporting tube 5.2.1; the first cross bar 14.2.3 is arranged in the front-back direction, the front end of the first cross bar 14.2.3 is hinged to the upper part of the rear side of the side main carriage adjusting mechanism connecting seat 14.2.1, the upper end of the first vertical bar 14.2.4 is fixedly connected with the rear end of the first cross bar 14.2.3, and the lower end of the first vertical bar 14.2.4 is hinged to the side main carriage 6.1.2; the tail end of the oil cylinder of the driving oil cylinder 14.2.2 of the side main carriage adjusting mechanism is hinged to the lower part of the rear side of the connecting seat 14.2.1 of the side main carriage adjusting mechanism, and the end of the piston rod is hinged to the connecting part of the first vertical rod 14.2.4 and the first cross rod 14.2.3. A piston rod of a driving oil cylinder 14.2.2 of the side main carriage adjusting mechanism is sleeved with a first compression spring 14.2.5; an energy accumulator 14.2.6 is arranged in an oil inlet pipeline of the driving oil cylinder 14.2.2 of the side main carriage adjusting mechanism.

The second pin shaft 6.1.3 is vertically arranged, the central axis of the second pin shaft 6.1.3 and the central axis of the first pin shaft 5.3 are in the same vertical plane in the front-back direction, and when the folding is needed, the central axes of the second pin shaft 6.1.3 and the first pin shaft 5.3 are coaxial.

A mud guide plate component is arranged on the suspension assembly 4; the mud guide plate component comprises a left mud guide plate 15.1, a right mud guide plate 15.2 and two mud guide plate connecting seats 15.3; the two mud guide plate connecting seats 15.3 are respectively sleeved and fixedly connected on the supporting pieces 4.3 at the outer sides of the two connecting plates 4.1; the upper ends of the left mud guide plate 15.1 and the right mud guide plate 15.2 are respectively and fixedly connected to the left mud guide plate connecting seat 15.3 and the right mud guide plate connecting seat 15.3; the left mud guide plate 15.1 and the right mud guide plate 15.2 are respectively provided with vertically arranged mud guide plates which are opposite at intervals in the transverse direction; the mud guide plates of the left mud guide plate 15.1 and the right mud guide plate 15.2 are inclined outwards from back to front and from top to bottom to form a splayed shape from back to front when viewed from top to bottom and a splayed shape from top to bottom when viewed from back to front.

The front side of the mud guide plate connecting seat 15.3 is provided with a plurality of holes which are equidistantly arranged in the vertical direction at intervals, the upper parts of the left mud guide plate 15.1 and the right mud guide plate 15.2 are respectively provided with a plurality of holes corresponding to the plurality of holes on the front side of the mud guide plate connecting seat 15.3, and the left mud guide plate 15.1 and the right mud guide plate 15.2 are fixedly connected with the mud guide plate connecting seat 15.3 through the corresponding holes.

When folding is needed, the second stretching oil cylinder 6.4 pulls the auxiliary planker 6.3 to rotate, the auxiliary planker is covered on the side main planker 6.1.2, the side main planker adjusting mechanism 14.2 rotates the side main planker 6.1.2 under the action of the side main planker adjusting mechanism driving oil cylinder 14.2.2 until the second pin shaft 6.1.3 and the central axis of the first pin shaft 5.3 are coaxial, then the first stretching oil cylinder 5.4 retracts, the side frame 5.2 is pulled to rotate around the first pin shaft 5.3, and folding of the side frame 5.2 and the side main planker 6.1.2 is achieved.