CN211090682U - Double-shaft straw returning processor - Google Patents

Abstract

A double-shaft straw returning processor. The single-shaft or double-shaft straw returning machine used at present hardly meets the stubble cleaning requirement during one-time stubble cleaning in actual operation, and has the problems of large concussion, large transmission torque, unbalanced stress and easy transmission shaft fracture or frame deformation during operation. The utility model discloses well long transmission side case and short transmission side case set up the both sides at split type shell respectively, and split type shell comprises preceding shell and back shell, and preceding shell is connected with the back shell through one-way locating part, is provided with the shaft type gear box of dual output and crushing roller in the preceding shell, is provided with the rotary tillage subassembly in the back shell, and first output divides axle and second output branch axle to set up respectively on two power take off ends of the shaft type gear box of dual output, first output divides the axle to be connected with crushing roller through short transmission side case, second output divides the axle to be connected with the rotary tillage subassembly through long transmission side case. The utility model is used for handle the straw.

Description

Double-shaft straw returning processor

The technical field is as follows:

the utility model relates to a still field processor of straw, concretely relates to still field processor of double-shaft straw.

Background art:

the straw returning field is a soil fertility increasing and yield increasing measure which is generally regarded as important in the world at present, and has the functions of increasing fertilizer and increasing yield while avoiding atmospheric pollution caused by straw burning. Before the straw returning technology is applied, the straws of crops are mixed with human and animal excrements and the like in various forms (including a mat fence, stack retting and burnt plant ash can be directly returned to the field) and put into the crop cycle of soil, the straws are rapidly developed in rural areas at present, a large amount of labor force is continuously reduced, farmers select to go out to work more, and the straw indirect returning technology is difficult to be popularized in the rural areas. In addition, considering the difficulty of applying the straw to industrial production, the adjustment of combustion structure and other factors, the technology of directly returning the rice and wheat straws to the field needs to be developed in rural areas. The development of advocating double entry operation machines can practice thrift operating cost, can also reduce the number of times that the tractor made a round trip to repeat the pressure field to the production requirement of peasant low-cost has been satisfied. At present, various composite operation forms developed by agricultural machinery in China are continuously innovated and developed, current single operation can be gradually replaced, and the composite operation forms become important development projects of the agricultural machinery in future. The comprehensive straw returning technology is vigorously developed and popularized all over the country, local straw burning is prohibited comprehensively, and meanwhile, the straw returning technology is used as the key point of a 'soil improvement plan', so that the development of the technology is promoted to a great extent. On the other hand, the straw returning technology is an important form of comprehensive utilization of straws, saves manpower and material resources, is convenient to operate and protects the natural environment. The method is particularly suitable for the situation that the labor force in rural areas is very short at present, and meets the requirement of agricultural development at present. When the method is applied to a plateau area with relatively high mechanization degree, the method has good effect by directly returning the straws of the corn and the wheat which are mechanically crushed to the field.

In actual operation, the working principle of the single-shaft straw returning machine is that the cutter is changed on the basis of the original rotary cultivator to finish the operation performance. Its main disadvantages are two: firstly, the rotating speed requirement of the straw returning machine in the rotating speed problem is 260 and 310 revolutions per minute. The rotating speed of the box body of the single shaft can only be about 215-280 r/min at present, and the stubble cleaning effect cannot reach the optimal state easily.

Secondly, because the single-shaft stubble cleaner works by using one colter shaft, the stubble cleaning requirement is difficult to meet by one-time stubble cleaning in actual operation, and the efficiency is low.

At present, a few double-shaft stubble ploughing machines are provided in the market aiming at the problems, although the problems are solved, new contradictions are added, and the main contradictions are expressed as the following two points:

firstly, all double-shaft transmission mechanisms utilize the box body of the original single-shaft stubble cleaner and adopt a single-side transmission method, and the biggest weaknesses of the double-shaft transmission mechanisms are large concussion, large transmission torque, unbalanced stress, easy transmission shaft fracture and frame deformation.

And secondly, some double-shaft side transmission adopts triangular belt transmission, and is only limited to dry land operation.

In a word, the used straw returning machine is difficult to meet the stubble cleaning requirement in one-time stubble cleaning during actual operation, and has the problems of large concussion, large transmission torque, unbalanced stress and easy transmission shaft fracture or frame deformation during operation.

The invention content is as follows:

in order to solve the problems mentioned in the background art, the utility model aims to provide a double-shaft straw returning processor.

The utility model provides a double-shaft straw returning processor, includes split type shell, long transmission side case, short transmission side case, one-way locating part, the shaft type gear box of dual output, first output minute axle, second output minute axle, crushing roller and rotary tillage subassembly, long transmission side case and short transmission side case set up respectively in the both sides of split type shell, and split type shell comprises preceding shell and back shell, and preceding shell is connected with the back shell through one-way locating part, is provided with the shaft type gear box of dual output and crushing roller in the preceding shell, is provided with the rotary tillage subassembly in the back shell, and first output minute axle and second output minute axle set up respectively on two power take off ends of the shaft type gear box of dual output, first output minute axle is connected with crushing roller through short transmission side case, second output minute axle is connected with the rotary tillage subassembly through short transmission side case.

As a preferable scheme: the double-output shaft type gear box comprises a sealed box body, a power input shaft, a first bevel gear and two second bevel gears, wherein the first bevel gear and the two second bevel gears are arranged in the sealed box body, the first bevel gear is meshed with the two second bevel gears respectively, the power input shaft penetrates through the sealed box body to be connected with the first bevel gear, the first output sub-shaft penetrates through one of the two second bevel gears and the second output sub-shaft penetrates through the other of the two second bevel gears.

As a preferable scheme: the one-way locating part includes spout and slide, and the vertical setting of spout is on the shell of back, and the one end setting of slide is at the top of shell in the front, and the other end suit of slide is provided with the slider on the other end of slide on the spout, and the slider setting is in the spout, and the slider is along the length direction reciprocating slide of spout, and the lower extreme of spout is provided with spacing sole, and processing has the spacing hole of the spacing sole of cooperation on the slide.

As a preferable scheme: the rolling surface of the crushing roller is provided with a plurality of saw-tooth-shaped long cutters.

As a preferable scheme: the rotary tillage component comprises a connecting shaft and a plurality of groups of rotary tillage cutters which are uniformly distributed on the connecting shaft along the length direction of the connecting shaft.

As a preferable scheme: the long transmission side box comprises a long outer box, a first transmission gear, a second transmission gear and a first transmission belt, the first transmission gear and the second transmission gear are arranged in the long outer box, the first transmission belt is arranged between the first transmission gear and the second transmission gear, a second output sub-shaft penetrates through the inner side wall of the long outer box to be connected with the first transmission gear, and one end of a connecting shaft penetrates through the inner side wall of the long outer box to be connected with the second transmission gear.

As a preferable scheme: the short transmission side box comprises a short outer box, a third transmission gear, a fourth transmission gear and a second transmission belt, the third transmission gear and the fourth transmission gear are arranged in the short outer box, the second transmission belt is arranged between the third transmission gear and the fourth transmission gear, the first output split shaft penetrates through the inner side wall of the short outer box to be connected with the third transmission gear, and one end of the crushing roller penetrates through the inner side wall of the short outer box to be connected with the fourth transmission gear.

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

one, the utility model discloses well split type shell, long transmission side case, short transmission side case, the shaft type gear box of dual output, first output is divided the axle, the second output is divided the axle, the overall structure who mutually supports between crushing roller and the rotary tillage subassembly and form has the light weight characteristics in heavy back before, accord with the operating procedure in the straw still field more, play the effect of pressing down and compacting the straw, it is big and the effect is reliable to handle the straw volume, can realize pressing down and bury the straw that just got into in the split type shell, the effect is effective and continuous.

Two, preceding shell cooperatees through one-way locating part and back shell and can realize that the rotary tillage subassembly is one-way ascending not sink in vertical direction, ensures that the cooperation of height between crushing roller and the rotary tillage subassembly is orderly, and it is smooth to handle the straw process, avoids taking place the straw jam problem.

And thirdly, the long transmission side box, the short transmission side box, the double-output shaft type gear box, the first output split shaft and the second output split shaft are connected in relation and arranged in position, a transmission mode of transmitting from the middle to two ends can be realized, the torque of the transmission mode is 1/2 for transmitting the torque at one side, all components in the front shell are uniform in weight, all components in the rear shell are uniform in weight, and the smooth operation of the whole machine is ensured.

And the first bevel gear and the two second bevel gears in the double-output shaft type gear box are mutually matched to form a three-body integrated meshing structure, three gear boxes of a common double-shaft type are concentrated on the intermediate gear box, the manufacturing cost is greatly reduced, and the power consumption is obviously reduced. In addition, the power input shaft is matched with the first output split shaft and the second output split shaft to form a transmission structure with one inlet and two outlets, and the transmission effect is symmetrical and stable.

Fifthly, compare the present unipolar or biax processor at least need plough and just can reach the stubble-cleaning effect more than twice, the utility model discloses a high-speed stubble-cleaning operation mode cooperation rotary tillage subassembly of crushing roller's normal fast rotary tillage operation mode makes the utility model discloses have double entry operation function, can accomplish stubble-cleaning operation once, the stubble-cleaning effect satisfies current stubble-cleaning standard.

Six, the utility model discloses can be applied to paddy field or nonirrigated farmland, can once only collect the straw to remaining straw, weeds, incomplete stubble after the rice results and smash, bury deeply, the soil preparation continuity operation is handled to level the soil, improve rotary tillage cutter unit and rotate the effect forward, strengthened the crushing effect to the soil, be favorable to the paddy field arrangement of next season, do not need additionally to increase the device simultaneously.

Description of the drawings:

for ease of illustration, the invention is described in detail by the following detailed description and accompanying drawings.

FIG. 1 is a schematic sectional view of the structure of the present invention, with the long outer box and the short outer box removed;

FIG. 2 is a schematic sectional view of the main view structure of the present invention with auxiliary moving small wheels;

fig. 3 is a schematic top view of the present invention;

FIG. 4 is a schematic front view of a dual output shaft gearbox;

FIG. 5 is a schematic perspective view of a connection relationship between a dual output shaft type gearbox and a first output sub-shaft and a second output sub-shaft;

FIG. 6 is a schematic front view of the one-way limiting member, in which the slide plate is at the lowest limit position;

FIG. 7 is a schematic side view of the one-way limiting member, in which the slide plate ascends along the height direction of the slide slot;

fig. 8 is a front view of the saw-tooth long knife with two cutting sides.

In the figure, 1-split housing; 1-1-front housing; 1-2-rear housing; 2-1-long outer box; 2-3-second transmission gear; 2-4-a first conveyor belt; 3-1-short outer box; 3-2-third drive gear; 3-3-fourth transmission gear; 3-4-a second conveyor belt; 4-one-way limiting piece; 4-1-chute; 4-2-sliding plate; 4-3-sliding block; 4-4-a limit foot plate; 4-5-limiting holes; 4-6-a limiting block; 5-double output shaft type gear box; 5-1-box body; 5-2-power input shaft; 5-3-a first bevel gear; 5-4-second bevel gear; 6-first output split shaft; 7-second output split shaft; 8-a crushing roller; 9-a rotary tillage component; 9-1-connecting shaft; 9-2-rotary blade; 10-a serrated long knife; 11-an auxiliary box body; 12-auxiliary moving small wheels; 13-a pallet.

The specific implementation mode is as follows:

in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described below with reference to specific embodiments shown in the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

It should also be noted that, in order to avoid obscuring the invention with unnecessary details, only the structures and/or process steps that are closely related to the solution according to the invention are shown in the drawings, while other details that are not relevant to the invention are omitted.

The first embodiment is as follows: as shown in fig. 1, 2, 3, 4, 5, 6, 7 and 8, the present embodiment adopts the following technical solutions, and comprises a split type housing 1, a long transmission side box, a short transmission side box, a one-way limiting member 4, a dual output shaft type gear box 5, a first output sub-shaft 6, a second output sub-shaft 7, a crushing roller 8 and a rotary tillage assembly 9, wherein the long transmission side box and the short transmission side box are respectively arranged at two sides of the split type housing 1, the split type housing 1 is composed of a front housing 1-1 and a rear housing 1-2, the front housing 1-1 is connected with the rear housing 1-2 through the one-way limiting member 4, the dual output shaft type gear box 5 and the crushing roller 8 are arranged in the front housing 1-1, the rotary tillage assembly 9 is arranged in the rear housing 1-2, the first output sub-shaft 6 and the second output sub-shaft 7 are respectively arranged at two power output ends of the dual output shaft type gear box 5, the first output split shaft 6 is connected with the crushing roller 8 through a short transmission side box, and the second output split shaft 7 is connected with the rotary tillage component 9 through a long transmission side box.

Further, the front shell 1-1 and the rear shell 1-2 are both arc-shaped shells and are respectively used for matching with the crushing roller 8 and the rotary tillage component 9.

Furthermore, the rear end of the front housing 1-1 is provided with a plane end for matching with the one-way limiting member 4, so as to provide a stable position for the installation of the one-way limiting member 4. The side wall of the front end of the rear shell 1-2 is matched with the one-way limiting piece 4 to provide a position for installing the one-way limiting piece 4.

Further, the first output split shaft 6 and the second output split shaft 7 have the same structure.

Further, the bottom of the rear shell 1-2 is provided with a leveling scraper. The leveling scraper is arranged to achieve the effect of further leveling the soil after the crushing roller 8 and the rotary tillage component 9 are continuously operated and processed.

Further, the top of the split type housing 1 is provided with a hanging portion, which is the same as the existing hanging portion, for connecting with a driving device.

Furthermore, the rear end of the split type shell 1 is provided with an auxiliary moving small wheel 12, which has the effect of auxiliary moving and supporting.

Further, a supporting plate 13 is arranged at the bottom of the dual output shaft type gear box 5 and used for supporting the dual output shaft type gear box 5.

Furthermore, the number of the one-way limiting pieces 4 is configured according to the sizes of the front shell 1-1 and the rear shell 1-2.

The second embodiment is as follows: the embodiment is further limited by the first embodiment, the double-output shaft type gear box 5 comprises a sealed box body 5-1, a power input shaft 5-2, a first bevel gear 5-3 and two second bevel gears 5-4, the first bevel gear 5-3 and the two second bevel gears 5-4 are both arranged in the box body 5-1, the first bevel gear 5-3 is respectively meshed with the two second bevel gears 5-4, the power input shaft 5-2 penetrates through the box body 5-1 to be connected with the first bevel gear 5-3, the first output sub-shaft 6 penetrates through one of the two second bevel gears 5-4 and the second output sub-shaft 7 penetrates through the other second bevel gear 5-4 of the two second bevel gears 5-4.

Furthermore, the sealed box body 5-1 comprises a box body and a plurality of sealing strips, the sealing strips are arranged at each joint of the box body, an inlet hole is processed in the sealed box body 5-1, the power input shaft 5-2 penetrates through the inlet hole, one end of the power input shaft 5-2 is sleeved with a first bevel gear 5-3, and the other end of the power input shaft 5-2 is connected with a power end of a tractor or other driving devices and moves by means of dragging of the tractor.

The third concrete implementation mode: the embodiment is further limited by the first or second specific embodiment, as shown in fig. 1, 6 and 7, the one-way limiting member 4 includes a sliding groove 4-1 and a sliding plate 4-2, the sliding groove 4-1 is vertically disposed on the rear housing 1-2, one end of the sliding plate 4-2 is disposed on the top of the front housing 1-1, the other end of the sliding plate 4-2 is sleeved on the sliding groove 4-1, the other end of the sliding plate 4-2 is provided with a sliding block 4-3, the sliding block 4-3 is disposed in the sliding groove 4-1, the sliding block 4-3 slides back and forth along the length direction of the sliding groove 4-1, the lower end of the sliding groove 4-1 is provided with a limiting foot plate 4-4, and the sliding plate 4-2 is provided with a limiting hole 4-5 matched with the limiting foot plate 4.

Furthermore, the number of the limiting foot plates 4-4 is two, the two limiting foot plates 4-4 are respectively horizontally arranged on two sides of the lower end of the sliding groove 4-1, correspondingly, the number of the limiting holes 4-5 is two, the limiting holes 4-5 are stepped holes with wide lower parts and narrow upper parts, the two limiting holes 4-5 are connected through long holes, and the width of the long holes is matched with the thickness of the bottom of the sliding groove 4-1. The total length of the long hole and the limiting hole 4-5 is matched with the width of the sliding groove 4-1.

Furthermore, the other end of the sliding plate 4-2 is provided with a hole, the sliding groove 4-1 is sleeved in the hole and is in sliding fit with the hole, a sliding block 4-3 is fixedly connected in the hole, the sliding plate 4-2 and the sliding block 4-3 are integrally manufactured, and the sliding block 4-3 slides in the sliding groove 4-1 in a reciprocating mode to play a role in guiding and control the directional sliding direction between the rear shell 1-2 and the front shell 1-1.

Furthermore, a limiting block 4-6 used for limiting the highest position of the movement of the sliding block 4-3 is arranged in the groove body at the top of the sliding groove 4-1.

The fourth concrete implementation mode: as a further limitation of the first, second or third embodiments, as shown in fig. 1, 2 and 8, the crushing roller 8 has a plurality of saw-tooth-shaped long blades 10 arranged on the rolling surface thereof. The saw-tooth-shaped long knife 10 is a blunt knife and is used for flattening straws and has the functions of pressing down and compacting the straws. The mill rollers 8 can be replaced with mill rollers of other existing products.

Further, the cutting side of the serrated long blade 10 is serrated.

Further, the length of the serrated long knife 10 is at least 20cm, and the specific length thereof is matched with the size of the crushing roller 8.

Further, both sides of the saw-tooth-shaped long knife 10 are cutting sides for realizing multidirectional cutting and performing secondary cutting treatment on the lifted straws.

The fifth concrete implementation mode: the embodiment is further limited by the first, second, third or fourth embodiment, the rotary tillage component 9 comprises a connecting shaft 9-1 and a plurality of groups of rotary tillage blades 9-2, and the plurality of groups of rotary tillage blades 9-2 are uniformly distributed on the connecting shaft 9-1 along the length direction of the connecting shaft 9-1.

Further, the outer diameter of the connecting shaft 9-1 is smaller than that of the second output split shaft 7, the outer diameters of the first output split shaft 6 and the second output split shaft 7 are the same, and the outer diameter of the second output split shaft 7 is smaller than that of the crushing roller 8.

Further, the debugging process of the rotary tillage assembly 9 is as follows: the rotary cultivator is descended to the required tilling depth by horizontally adjusting the input shaft of the rotary cultivating assembly 9, and the input shaft of the rotary cultivator, the connecting shaft 9-1 of the tractor and the second transmission gear 2-3 are arranged coaxially or not, so that the input shaft and the output shaft are ensured to be parallel, and the universal joint is ensured to rotate uniformly. The tool tips of a plurality of groups of rotary tilling blades 9-2 in the rotary tilling assembly 9 are adjusted to be close to the ground, the tool tips are only required to be 20cm away from the ground, whether the heights of the left and right tool tips of each group of rotary tilling blades 9-2 from the ground are consistent or not is observed, and if the heights of the left and right tool tips of each group of rotary tilling blades 9-2 are inconsistent, the positions of the left and right lower pull rods of the tractor are adjusted according.

The sixth specific implementation mode: the embodiment is further limited by the first, second, third, fourth or fifth specific embodiment, the long transmission side box comprises a long outer box 2-1, a first transmission gear, a second transmission gear 2-3 and a first transmission belt 2-4, the first transmission gear and the second transmission gear 2-3 are arranged in the long outer box 2-1, the first transmission belt 2-4 is arranged between the first transmission gear and the second transmission gear 2-3, the second output sub-shaft 7 penetrates through the inner side wall of the long outer box 2-1 to be connected with the first transmission gear, and one end of the connecting shaft 9-1 penetrates through the inner side wall of the long outer box 2-1 to be connected with the second transmission gear 2-3. The other end of the connecting shaft 9-1 is connected with the auxiliary box body 11 through a bearing. The auxiliary case 11 is disposed behind the short transmission side case.

The seventh embodiment: the embodiment is further limited by the first, second, third, fourth, fifth or sixth specific embodiment, the short transmission side box comprises a short outer box 3-1, a third transmission gear 3-2, a fourth transmission gear 3-3 and a second conveyor belt 3-4, the third transmission gear 3-2 and the fourth transmission gear 3-3 are arranged in the short outer box 3-1, the second conveyor belt 3-4 is arranged between the third transmission gear 3-2 and the fourth transmission gear 3-3, the first output branch shaft 6 penetrates through the inner side wall of the short outer box 3-1 to be connected with the third transmission gear 3-2, and one end of the crushing roller 8 penetrates through the inner side wall of the short outer box 3-1 to be connected with the fourth transmission gear 3-3. The other end of the crushing roller 8 is arranged on the side wall of the long transmission side box, so that the effect of auxiliary connection is achieved, and the running stability of the whole machine is enhanced.

The working process is as follows:

will the utility model discloses be connected with drive arrangement, ensure that power input shaft 5-2 is connected with drive arrangement's power take off end, start the shaft type gear box 5 of dual output, the rotation of the split axle of first output 6 and the split axle 7 of second output drives crushing roller 8 and rotary tillage subassembly 9 and rotates respectively, the straw is earlier pressed down by split type shell 1 front end, further compaction with the straw through the weight of the shaft type gear box 5 of dual output, then smash compaction and deep-buried processing through crushing roller 8, rotary tillage subassembly 9 final rotary tillage carries out final garrulous and landfill processing to the straw.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. A double-shaft straw returning processor is characterized in that: comprises a split type shell (1), a long transmission side box (2), a short transmission side box (3), a one-way limiting piece (4), a double output shaft type gear box (5), a first output split shaft (6), a second output split shaft (7), crushing rollers (8) and rotary tillage components (9), wherein the long transmission side box (2) and the short transmission side box (3) are respectively arranged at two sides of the split type shell (1), the split type shell (1) consists of a front shell (1-1) and a rear shell (1-2), the front shell (1-1) is connected with the rear shell (1-2) through the one-way limiting piece (4), the double output shaft type gear box (5) and the double output shaft type crushing rollers (8) are arranged in the front shell (1-1), the rotary tillage components (9) are arranged in the rear shell (1-2), the first output split shaft (6) and the second output split shaft (7) are respectively arranged at two power output ends of the double output shaft type gear box (5), the first output split shaft (6) is connected with the crushing roller (8) through the short transmission side box (3), and the second output split shaft (7) is connected with the rotary tillage component (9) through the long transmission side box (2).

2. The double-shaft straw returning processor as claimed in claim 1, wherein: the double-output shaft type gear box (5) comprises a sealed box body (5-1), a power input shaft (5-2), a first bevel gear (5-3) and two second bevel gears (5-4), the first bevel gear (5-3) and the two second bevel gears (5-4) are arranged in the sealed box body (5-1), the first bevel gear (5-3) is respectively meshed with the two second bevel gears (5-4), the power input shaft (5-2) penetrates through the sealed box body (5-1) and is connected with the first bevel gear (5-3), the first output sub-shaft (6) penetrates through one of the second bevel gears (5-4) of the two second bevel gears (5-4), and the second output sub-shaft (7) penetrates through the other second bevel gear (5-4) of the two second bevel gears (5-4).

3. The double-shaft straw returning processor as claimed in claim 1, wherein: the one-way limiting part (4) comprises a sliding groove (4-1) and a sliding plate (4-2), the sliding groove (4-1) is vertically arranged on the rear shell (1-2), one end of the sliding plate (4-2) is arranged at the top of the front shell (1-1), the other end of the sliding plate (4-2) is sleeved on the sliding groove (4-1), a sliding block (4-3) is arranged at the other end of the sliding plate (4-2), the sliding block (4-3) is arranged in the sliding groove (4-1), the sliding block (4-3) slides in a reciprocating mode along the length direction of the sliding groove (4-1), a limiting foot plate (4-4) is arranged at the lower end of the sliding groove (4-1), and a limiting hole (4-5) matched with the limiting foot plate (4-4) is machined in the sliding plate (4-2.

4. The double-shaft straw returning processor as claimed in claim 1, wherein: the rolling surface of the crushing roller (8) is provided with a plurality of saw-tooth-shaped long knives (10).

5. The double-shaft straw returning processor as claimed in claim 1, wherein: the rotary tillage component (9) comprises a connecting shaft (9-1) and a plurality of groups of rotary tillage blades (9-2), and the plurality of groups of rotary tillage blades (9-2) are uniformly distributed on the connecting shaft (9-1) along the length direction of the connecting shaft (9-1).

6. The twin-shaft straw returning processor of claim 5, wherein: the long transmission side box (2) comprises a long outer box (2-1), a first transmission gear, a second transmission gear (2-3) and a first transmission belt (2-4), the first transmission gear and the second transmission gear (2-3) are arranged in the long outer box (2-1), the first transmission belt (2-4) is arranged between the first transmission gear and the second transmission gear (2-3), a second output sub-shaft (7) penetrates through the inner side wall of the long outer box (2-1) to be connected with the first transmission gear, and one end of a connecting shaft (9-1) penetrates through the inner side wall of the long outer box (2-1) to be connected with the second transmission gear (2-3).

7. The twin-shaft straw returning processor as claimed in any one of claims 1 to 6, wherein: the short transmission side box (3) comprises a short outer box (3-1), a third transmission gear (3-2), a fourth transmission gear (3-3) and a second conveyor belt (3-4), the third transmission gear (3-2) and the fourth transmission gear (3-3) are arranged in the short outer box (3-1), the second conveyor belt (3-4) is arranged between the third transmission gear (3-2) and the fourth transmission gear (3-3), a first output branch shaft (6) penetrates through the inner side wall of the short outer box (3-1) to be connected with the third transmission gear (3-2), and one end of a crushing roller (8) penetrates through the inner side wall of the short outer box (3-1) to be connected with the fourth transmission gear (3-3).

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