CN217936564U - Sugarcane leaf smashing and returning device - Google Patents

Abstract

The utility model provides a sugarcane leaf crushing and returning device, which belongs to the technical field of sugarcane leaf treatment; the crushing mechanism comprises a suspension frame, a power mechanism, a crushing mechanism and a pushing mechanism, wherein the power mechanism is arranged on the suspension frame and is used for driving the crushing mechanism and the pushing mechanism to operate; the smashing mechanism is arranged at the bottom end of the suspension bracket and used for smashing the sugarcane leaves in the field and conveying the sugarcane leaves to the pushing mechanism, and the pushing mechanism is arranged at the rear end of the suspension bracket and used for directionally throwing the smashed sugarcane leaves to the field; the smashed sugarcane leaves are directionally thrown by adopting the pushing mechanism, the sugarcane leaves in the sugarcane field can be stacked in a staggered mode and returned to the field as required, and management operations such as ridge breaking, fertilizer applying machine and ridging are conveniently carried out on the follow-up perennial sugarcane among rows for clearing the sugarcane leaves; the sugarcane leaves can be also piled up in a centralized way according to the needs, and the bundling and selling are convenient; the device has simple structure, can be efficiently combined with the prior agricultural vehicle, and has wide application range.

Description

Sugarcane leaf smashing and returning device

Technical Field

The utility model relates to a sugarcane top handles technical field, in particular to still field device is smashed to sugarcane top.

Background

Perennial root sugarcane, as an important sugarcane cultivation mode, accounts for more than 60% of the total planting area of the annual sugarcane. However, due to the influences of factors such as planting environment, agriculture and management, the perennial root age of the sugarcane in China is only 1-2 years, and can reach 4-5 years abroad, and some even 8-10 years, so that the management benefit of the perennial root sugarcane in China is extremely low, and the planting benefit of the sugarcane is seriously influenced. In addition, the biomass of the sugarcane is large, sugarcane leaves left in a sugarcane field reach 1-1.4 tons/mu after being harvested every year, and due to the lack of reliable sugarcane leaf treatment equipment and methods, the quality and difficulty of subsequent sugarcane mechanical tillage management operation are influenced. The sugarcane leaves contain rich organic substances, and if the sugarcane leaves are ground and returned to the field, the soil fertility can be improved, the soil organic matter content is increased, the fertilizer using amount is reduced, the production cost of the sugarcane can be reduced, and the adjustment of the soil pH value is facilitated, so that the sugar content of the sugarcane is increased;

in the prior art, a crushing and field returning device is adopted to crush sugarcane leaves in the field, and the planting cost is directly saved as field fertilizer, for example, the invention patent of patent application No. 201611022822.5 discloses a transmission system, a frame, a front baffle, a flail knife, a fixed knife, a knife roller, a rear baffle, a limiting wheel and a profiling leaf collector, wherein when the profiling leaf collector is adopted, the sugarcane leaves tightly attached to the ground are collected and lifted to a certain height, the flail knife rotating at a high speed picks up the sugarcane leaves and feeds the sugarcane leaves into a crushing chamber, the sugarcane leaves are beaten and sheared into a crushed leaf section by the flail knife and the fixed knife in the crushing chamber, and the crushed leaf section is thrown to the field along the rear end of the rear baffle under the action of centrifugal force to complete the picking and crushing operation of the sugarcane leaves, but the crushed sugarcane leaves are directly scattered and thrown to the field, so that the planting management operation such as ridge breaking, fertilization, ridging and ridging on the sugarcane field is influenced, and the planting cost is improved;

the utility model discloses a utility model patent of application number 200920236689.2 discloses a sugarcane leaf smashes still field machine with leaf-collecting guider, by the frame, transmission system, rubbing crusher constructs, stop device constitutes, the leaf-collecting guider that rubbing crusher's export meets, kibbling sugarcane leaf garrulous section is kept off when evenly being thrown to leaf-collecting guider along the casing rear end under centrifugal force, make sugarcane leaf garrulous section can not throw in the furrow on both sides, can know by concrete implementation mode and figure 2, this leaf-collecting guider sets up both ends and symmetrical arrangement in rubbing crusher constructs the exit, the device of this patent is although having carried out certain barrier effect to kibbling sugarcane leaf, prevent it from throwing in the furrow on both sides, but only play the effect of sheltering from, still have the sugarcane leaf and drop to leaf-collecting guider the place ahead at the in-process of throwing backward, or present the middle part and shelter from more, tower-shaped sugarcane leaf heap that is unfavorable for both sides slope gradually, the integration to sugarcane leaf, unified management, also there is the follow-up the influence to the sugarcane soil application, the problem of the management of the follow-up, etc..

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome above technical problem, provide a still field device is smashed to sugarcane leaf, solve prior art and simply smash and shed, influence the follow-up problem to planting management operations such as broken ridge, fertilization, hilling up of sugarcane field.

In order to solve the technical problem, the technical scheme of the utility model as follows: a sugarcane leaf crushing and returning device comprises a suspension bracket, a power mechanism, a crushing mechanism and a pushing mechanism, wherein the power mechanism is arranged on the suspension bracket and used for driving the crushing mechanism and the pushing mechanism to operate; the smashing mechanism is installed at the bottom end of the suspension bracket and used for smashing the sugarcane leaves in the field and conveying the sugarcane leaves to the pushing mechanism, and the pushing mechanism is installed at the rear end of the suspension bracket and used for directionally throwing the smashed sugarcane leaves to the field.

When the device is used, the suspension bracket is arranged at the rear part of an agricultural mechanical vehicle and moves forwards, such as a tractor; the power mechanism is started to drive the crushing mechanism and the pushing mechanism to operate, the crushing mechanism is in contact with the sugarcane leaves in the field, the crushing mechanism is in contact with the sugarcane leaves to drive the sugarcane leaves to enter the crushing mechanism to be crushed into crushed leaves, then the crushed sugarcane leaves are conveyed to the pushing mechanism, and the pushing mechanism directionally throws the collected crushed sugarcane leaves to the field;

preferably, push mechanism is including installing the rotation axis in the mounted frame inside, the rotation axis rotates with the mounted frame to be connected and one end is connected with power unit, install the propelling part and throw the portion that are located the rubbing crusher and shed the side on the rotation axis, propelling part is used for collecting the crushing back sugarcane leaf that corresponds the position rubbing crusher and throws the portion of sending and transport to throwing, throw the portion and be used for throwing the sugarcane leaf after smashing out the mounted frame and shed still field.

Preferably, the hanging frame above the throwing part is provided with a throwing port, and the throwing part throws the crushed sugarcane leaves from the throwing port to return to the field.

Preferably, the pushing part comprises a spiral knife arranged around the outer wall of the rotating shaft, and the throwing part comprises a plurality of throwing claws arranged around the outer wall of the rotating shaft.

Preferably, the spiral knife and the throwing claw are positioned on the same spiral path of the rotating shaft, and the ends of the spiral knife and the throwing claw are connected.

Preferably, the length of the spiral knife is 1/2-3/5 of the axial length of the rotating shaft, and the height of the throwing claw is 1/2 of the height of the spiral knife.

Preferably, the axial length of the rotating shaft is 1.5-2.5m, the revolution diameter of the spiral knife is 35-45cm, and the height of the spiral knife is 10-15cm.

Preferably, the suspension bracket comprises a side plate, a bottom plate and a top plate which are connected with each other, the throwing opening is formed in the top plate above the throwing part, and the bottom plate below the pushing mechanism is provided with a plurality of round holes.

Preferably, power unit includes driving motor and transmission shaft, rubbing crusher constructs including crushing roller and installs the crushing cutter group on crushing roller, driving motor is connected with the transmission shaft, first belt pulley is installed to transmission shaft one end, crushing roller rotates with the mounted frame curb plate to be connected and both ends install second belt pulley and third belt pulley respectively, first belt pulley and second belt pulley cover are equipped with driving belt and are connected through the driving belt transmission, the fourth belt pulley is installed to the rotating shaft tip, third belt pulley and fourth belt pulley cover are equipped with driving belt and are connected through the driving belt transmission.

Preferably, the driving motor is connected with the transmission shaft through a gearbox, and the crushing cutter group comprises a straight cutter and a bent cutter.

Preferably, the suspension bracket 1 adopts a three-point suspension bracket, and the rear end of the suspension bracket is provided with wheels; the power mechanism 2 is provided with a plurality of motors for driving the shafts of the crushing mechanism 3 and the pushing mechanism 4, and the bottom of the crushing mechanism 3 is provided with a profile modeling leaf collector for collecting sugarcane leaves conveniently to enter the crushing device; the crushing mechanism can also adopt a height adjusting device to facilitate the crushing mechanism to be recovered into the suspension bracket, and the crushing mechanism protrudes out of the suspension bracket to be contacted with the sugarcane leaves when in use.

Compared with the prior art, the utility model discloses technical scheme's beneficial effect is: the smashed sugarcane leaves are directionally thrown by adopting a pushing mechanism, and the sugarcane leaves in a sugarcane field can be stacked in a staggered mode to be returned to the field as required, so that management operations of ridge breaking, fertilizer application, hilling and the like of subsequent perennial sugarcane in the row cleaning of the sugarcane leaves are facilitated; the sugarcane leaves can be also piled up in a centralized way according to the needs, and the sugarcane leaves are convenient to bundle and sell; the device has simple structure, can be efficiently combined with the prior agricultural vehicle, and has wide application range.

Drawings

FIG. 1 is a schematic side view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic view of the internal structure of the present invention;

fig. 4 is a schematic perspective view of the structure of the pushing mechanism of the present invention;

fig. 5 is a schematic front view of the structure of the pushing mechanism of the present invention;

FIG. 6 is a schematic side view of the pushing mechanism of the present invention;

wherein: 1. a suspension bracket; 2. a power mechanism; 3. a crushing mechanism; 4. a pushing mechanism; 5. a throwing port; 6. A circular hole;

101. a side plate; 102. a base plate; 103. a top plate;

201. a drive motor; 202. a drive shaft; 203. a first pulley; 204. a second pulley; 205. a third belt pulley; 206. a fourth belt pulley;

301. a crushing shaft; 302. a crushing cutter set; 303. straight cutting; 304. bending a cutter;

401. a rotating shaft; 402. a spiral knife; 403. and (4) throwing the claws.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship shown in the drawings, and are used for descriptive purposes only and to simplify the description, rather than to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and that "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated; nor is it intended to represent the importance of the components and therefore should be construed as limiting the invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific dimensions used in the present embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present invention.

The technical solution of the present invention is further described with reference to the accompanying drawings and embodiments.

Example 1:

referring to fig. 1-3, a sugarcane leaf crushing and returning device comprises a suspension bracket 1, a power mechanism 2, a crushing mechanism 3 and a pushing mechanism 4, wherein the power mechanism 2 is mounted on the suspension bracket 1 and used for driving the crushing mechanism 3 and the pushing mechanism 4 to operate; the smashing mechanism 3 is installed at the bottom end of the suspension bracket 1 and used for smashing the sugarcane leaves in the field and conveying the sugarcane leaves to the pushing mechanism 4, and the pushing mechanism 4 is installed at the rear end of the suspension bracket 1 and used for directionally throwing the smashed sugarcane leaves to the field.

In the specific implementation process, when the device is used, the suspension bracket 1 is arranged behind an agricultural mechanical vehicle and moves forwards, such as a tractor; the power mechanism 2 is started, the crushing mechanism 3 and the pushing mechanism 4 are driven to operate, the crushing mechanism 3 is in contact with sugarcane leaves in the field, the crushing mechanism 3 is in contact with the sugarcane leaves to drive the sugarcane leaves to enter the crushing mechanism 3 to be crushed into crushed leaves, then the crushed sugarcane leaves are conveyed to the pushing mechanism 4, and the pushing mechanism 4 is used for directionally throwing and returning the collected crushed sugarcane leaves to the field;

the sugarcane leaves can be thrown into the sugarcane ditches in one row of the sugarcane ditches in the crushing operation part as required to realize the purpose of piling and returning the sugarcane leaves in an interlaced way, for example, the operation surface of the crushing mechanism 3 spans two rows of sugarcane fields, then the crushed sugarcane leaves are intensively thrown to one row by the pushing mechanism 4, the sugarcane leaves in the other row are also cleaned to the adjacent row, and the sugarcane leaves in the other row do not exist; under repeated operation, one row of sugarcane leaves is arranged in every two rows of the whole sugarcane field; thus, the perennial root sugarcane heads positioned at the sugarcane ridges are convenient to operate; when the working surface of the crushing mechanism 3 covers three rows of sugarcane fields, the crushed sugarcane leaves can be intensively thrown to one row of the edge part by the pushing mechanism 4 in the same way, and no sugarcane leaves exist in the ditches of the other two rows of sugarcane fields;

after the sugarcane leaf crushing and returning device is operated, the sugarcane leaves in the sugarcane field are stacked in an interlaced mode and returned to the field, and management operations such as ridge breaking, fertilizer applying machine and ridging are conveniently carried out on the subsequent perennial root sugarcanes among rows for clearing the sugarcane leaves; the crushed sugarcane leaves are prevented from being thrown to the field at will to influence the subsequent planting process;

the crushed sugarcane leaves can be centralized and directionally thrown to a certain row of area according to the requirement, so that the centralized accumulation of the sugarcane leaves or the subsequent processing of the sugarcane leaves, such as bundling and selling, are facilitated.

Example 2:

referring to fig. 1-6, on the basis of embodiment 1, the pushing mechanism 4 includes a rotating shaft 401 installed inside the suspension bracket 1, the rotating shaft 401 is rotatably connected to the suspension bracket 1, and one end of the rotating shaft 401 is connected to the power mechanism 2, a pushing portion and a throwing portion are installed on the rotating shaft 401 and located on the throwing side of the crushing mechanism 3, the pushing portion is used for collecting crushed sugarcane leaves thrown by the crushing mechanism 3 at a corresponding position and transporting the crushed sugarcane leaves to the throwing portion, and the throwing portion is used for throwing the crushed sugarcane leaves out of the suspension bracket 1 and throwing the crushed sugarcane leaves to return to the field.

In the specific implementation process, when the device is used, the suspension bracket 1 is arranged behind an agricultural mechanical vehicle, such as a tractor; the power mechanism 2 is started, the smashing mechanism 3 and the pushing mechanism 4 are driven to operate, the power mechanism 2 drives the rotating shaft 401 to rotate, the rotating shaft 401 drives the pushing portion and the throwing portion to rotate, the bottom of the smashing mechanism 3 protrudes out of the suspension bracket 1 to be in contact with sugarcane leaves in a field, the smashing mechanism 3 is in contact with the sugarcane leaves to drive the sugarcane leaves to enter the smashing mechanism 3 to be smashed into smashed sugarcane leaves, then the smashed sugarcane leaves are conveyed to the pushing mechanism 4, and the throwing portion directly throws the smashed sugarcane leaves thrown by the smashing mechanism 3 out of the suspension bracket 1; the push portion is used for collecting the smashed sugarcane leaves thrown by the corresponding position smashing mechanism 3 and transporting the smashed sugarcane leaves to the throwing portion, the smashed sugarcane leaves are thrown out of the suspension bracket 1 by the throwing portion, the smashed sugarcane leaves are thrown out to a field from one direction through the matching of the push portion and the throwing portion, then in the forward direction, the sugarcane leaves can be intensively returned to the field to the path of the throwing portion, and therefore the situation that the smashed sugarcane leaves are directionally thrown and returned to the field by the push mechanism 4 is achieved.

In a further embodiment, a throwing port 5 is formed in the suspension bracket 1 above the throwing part, the throwing part throws the crushed sugarcane leaves from the throwing port 5 to return to the field, the throwing port 5 with a fixed position is arranged above the throwing part, the crushed sugarcane leaves are directionally thrown from the position of the throwing port 5 to return to the field, and in the using process, the size or the angle of the throwing port 5 can be adjusted according to production requirements, so that the production requirements are met on the premise of not influencing the throwing effect.

Example 3:

referring to fig. 1 to 6, on the basis of embodiment 2, the pushing part includes a spiral blade 402 installed around the outer wall of a rotating shaft 401, and the throwing part includes a plurality of throwing claws 403 installed around the outer wall of the rotating shaft 401.

In the specific implementation process, when the device is used, the suspension bracket 1 is arranged behind an agricultural mechanical vehicle, such as a tractor; starting the power mechanism 2, driving the crushing mechanism 3 and the pushing mechanism 4 to operate, wherein the power mechanism 2 drives the rotating shaft 401 to rotate, the throwing claw 403 rotates along with the rotating shaft 401, the rotating direction faces the rear end of the suspension bracket 1, the throwing direction faces the rear end of the suspension bracket 1, namely the tail part of the advancing direction, the spiral knife 402 rotates along with the rotating shaft 401, the crushed sugarcane leaves are conveyed to the throwing claw 403 in a centralized manner,

the crushing mechanism 3 is in contact with sugarcane leaves in the field, the crushing mechanism 3 is in contact with the sugarcane leaves and drives the sugarcane leaves to enter the crushing mechanism 3 to be crushed into crushed leaves, then the crushed sugarcane leaves are conveyed to the pushing mechanism 4, and the throwing claw 403 directly throws the crushed sugarcane leaves thrown by the crushing mechanism 3 out of the hanging frame 1; the spiral knife 402 is used for collecting the crushed sugarcane leaves thrown by the crushing mechanism 3 at the corresponding position and transporting the crushed sugarcane leaves to the throwing claw 403, the crushed sugarcane leaves are thrown out of the suspension bracket 1 by the throwing claw 403, the crushed sugarcane leaves are thrown out to the field from one direction through the matching of the pushing part and the throwing part, and then in the forward direction, the sugarcane leaves are returned to the field in a concentrated mode to a plurality of paths where the throwing claw 403 is located, so that the crushed sugarcane leaves are returned to the field in a directional throwing mode by the pushing mechanism 4.

In a further embodiment, the spiral knife 402 and the throwing claw 403 are located on the same spiral path of the rotating shaft 401, and the ends of the spiral knife 402 and the throwing claw 403 are connected, so that the spiral knife 402 can conveniently and accurately convey the collected crushed sugarcane leaves to the throwing claw 403.

In a further embodiment, the length of the spiral knife 402 is 1/2-3/5 of the axial length of the rotating shaft 401, so that the throwing claw 403 is positioned at the edge of the working surface, centralized throwing is facilitated, and the throwing coverage is prevented from being too large; the height of the throwing claw 403 is 1/2 of the height of the spiral knife 402, the height of the throwing claw 403 is designed to be too low, and the throwing efficiency is obviously reduced; the throwing claw 403 is designed to be too high, so that blockage is easily caused; this arrangement is efficient in operation.

In a further embodiment, the shaft length of the rotating shaft 401 is 1.5-2.5m, and the rotating shaft is suitable for planting row spacing and furrow width of a sugarcane field; the diameter of revolution of the spiral knife 402 is 35-45cm, and the height of the spiral knife 402 is 10-15cm.

Example 4:

referring to fig. 1-6, on the basis of embodiment 3, the suspension bracket 1 includes a side plate 101, a bottom plate 102 and a top plate 103 connected to each other, the throwing port 5 is opened at the top plate 103 above the throwing portion, and the bottom plate 102 below the pushing mechanism 4 is opened with a plurality of round holes 6.

When the crushing amount is too large, the sugarcane leaves are not pushed or thrown in time, and can fall off from the round hole 6, so that the pushing mechanism is prevented from being blocked.

In a further embodiment, the power mechanism 2 comprises a driving motor 201 and a transmission shaft 202, the crushing mechanism 3 comprises a crushing shaft 301 and a crushing cutter set 302 installed on the crushing shaft 301, the driving motor 201 is connected with the transmission shaft 202, a first belt pulley 203 is installed at one end of the transmission shaft 202, the crushing shaft 301 is rotatably connected with the side plate 101 of the suspension bracket 1, and a second belt pulley 204 and a third belt pulley 205 are installed at two end portions of the crushing shaft, the first belt pulley 203 and the second belt pulley 204 are sleeved with a transmission belt and are in transmission connection through the transmission belt, a fourth belt pulley 206 is installed at one end portion of the rotation shaft 401, and the third belt pulley 205 and the fourth belt pulley 206 are sleeved with the transmission belt and are in transmission connection through the transmission belt.

Adopt driving motor 201 drive transmission shaft 202 to rotate, drive first belt pulley 203 and rotate, driving belt through the cover is established drives second belt pulley 204 and is rotated, thereby drive crushing axle 301 and third belt pulley 205 and rotate, crushing knife tackle 302 synchronous rotation produces the negative pressure and adsorbs, the mode of contact drives the sugarcane leaf and gets into crushing, third belt pulley 205 drives fourth belt pulley 206 through driving belt and rotates, thereby synchronous drive rotation axis 401 rotates, the realization is to the drive of rubbing crusher mechanism 3 and push mechanism 4.

In a further embodiment, the driving motor 201 is connected with the transmission shaft 202 through a gearbox, and the crushing cutter group 302 comprises a straight cutter 303 and a bent cutter 304, so as to facilitate more efficient completion of the crushing work.

The suspension bracket 1, the power mechanism 2 and the crushing mechanism 3 are not limited to the structures mentioned in the embodiment, and can be replaced by the structures in the prior art, for example, the suspension bracket 1 can adopt a three-point suspension bracket, and the rear part of the suspension bracket can be conveniently moved by wheels; the power mechanism 2 can be directly provided with a plurality of motors to drive the crushing mechanism 3 and the pushing mechanism 4, the crushing mechanism 3 can adopt a crushing device in the background technology, and a profiling leaf collector can be adopted to facilitate the collection of the sugarcane leaves into the crushing device; the crushing mechanism can also adopt a height adjusting device to facilitate the crushing mechanism to be recovered into the suspension bracket.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a sugarcane leaf smashes still field device which characterized in that: the crushing machine comprises a suspension frame (1), a power mechanism (2), a crushing mechanism (3) and a pushing mechanism (4), wherein the power mechanism (2) is arranged on the suspension frame (1) and is used for driving the crushing mechanism (3) and the pushing mechanism (4) to operate; the sugarcane leaf smashing machine is characterized in that the smashing mechanism (3) is installed at the bottom end of the suspension bracket (1) and used for smashing sugarcane leaves in the field and conveying the sugarcane leaves to the pushing mechanism (4), and the pushing mechanism (4) is installed at the rear end of the suspension bracket (1) and used for directionally throwing and returning the smashed sugarcane leaves to the field.

2. The sugarcane top crushing and returning device as claimed in claim 1, wherein: push mechanism (4) are including installing rotation axis (401) in mounted frame (1) inside, rotation axis (401) rotate with mounted frame (1) and are connected and one end is connected with power unit (2), install the propelling part and the portion of throwing that is located rubbing crusher structure (3) side of shedding on rotation axis (401), the propelling part is used for collecting the crushing back sugarcane leaf that corresponds position rubbing crusher structure (3) and throws the portion of throwing, the portion of throwing is used for throwing the sugarcane leaf after smashing out mounted frame (1) and shed still field.

3. The sugarcane top crushing and returning device as claimed in claim 2, wherein: the hanging frame (1) above the throwing part is provided with a throwing port (5), and the throwing part throws the crushed sugarcane leaves from the throwing port (5) to return to the field.

4. The sugarcane leaf crushing and returning device as claimed in claim 3, wherein: the pushing part comprises a spiral knife (402) arranged around the outer wall of the rotating shaft (401), and the throwing part comprises a plurality of throwing claws (403) arranged around the outer wall of the rotating shaft (401).

5. The sugarcane top crushing and returning device as claimed in claim 4, wherein: the spiral knife (402) and the throwing claw (403) are positioned on the same spiral path of the rotating shaft (401), and the ends of the spiral knife (402) and the throwing claw (403) are connected.

6. The sugarcane leaf crushing and returning device as claimed in claim 5, wherein: the length of the spiral knife (402) is 1/2-3/5 of the axial length of the rotating shaft (401), and the height of the throwing claw (403) is 1/2 of the height of the spiral knife (402).

7. The sugarcane top crushing and returning device as claimed in claim 6, wherein: the axial length of the rotating shaft (401) is 1.5-2.5m, the revolution diameter of the spiral knife (402) is 35-45cm, and the height of the spiral knife (402) is 10-15cm.

8. The sugarcane top crushing and returning device as claimed in any one of claims 3 to 7, wherein: the hanging frame (1) comprises side plates (101), a bottom plate (102) and a top plate (103) which are connected with one another, the throwing port (5) is formed in the position of the top plate (103) above the throwing portion, and the bottom plate (102) located below the pushing mechanism (4) is provided with a plurality of round holes (6).

9. The sugarcane leaf crushing and returning device as claimed in claim 8, wherein: power unit (2) are including driving motor (201) and transmission shaft (202), crushing mechanism (3) are including smashing axle (301) and install crushing knife tackle (302) on smashing axle (301), driving motor (201) are connected with transmission shaft (202), first belt pulley (203) is installed to transmission shaft (202) one end, smash axle (301) and mounted frame (1) curb plate (101) rotate to be connected and both ends install second belt pulley (204) and third belt pulley (205) respectively, first belt pulley (203) and second belt pulley (204) cover are equipped with driving belt and are connected through the driving belt transmission, fourth belt pulley (206) is installed to rotation axis (401) tip, third belt pulley (205) and fourth belt pulley (206) cover are equipped with driving belt and are connected through the driving belt transmission.

10. The sugarcane top crushing and returning device as claimed in claim 9, wherein: the driving motor (201) is connected with the transmission shaft (202) through a gearbox, and the crushing knife group (302) comprises a straight knife (303) and a bent knife (304).

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