CN110839358B - Turning-pressing covering and mixing mechanism suitable for returning straw to field - Google Patents

Abstract

The invention provides an overturning covering mixing mechanism suitable for straw returning to the field, comprising: a transmission is installed on the upper end surface of the front side of the casing, and a straw crushing mechanism and a soil turning mechanism are connected in rotation inside the casing. The output shaft of the transmission drives the three-slot driving wheel to rotate, and then under the transmission of the first belt, the three-slot driven wheel drives the straw crushing mechanism to rotate. Through the rapid rotation of the straw crushing knife, the straw returning machine moves forward. While moving, the straw in the field is crushed; while the straw crushing mechanism is rotating, the soil turning mechanism is rotated at the same time through the second transmission mechanism, and then the crushed straw is quickly turned by the rotation of the soil turning claws. Stirring the straw into the soil and evenly mixing with the soil effectively improves the utilization rate of the straw, and the soil turning work can be completed without using another soil turning machine, which greatly reduces the cost and energy consumption of straw returning to the field.

Description

A kind of overturning and covering mixing mechanism suitable for returning straw to the field

technical field

The invention belongs to the technical field of agricultural machinery, and more specifically relates to an overturning, covering and mixing mechanism suitable for returning straw to the field.

Background technique

Straw returning to the field is a method of applying straw (wheat straw, corn straw, rice straw, etc.) that are not suitable for direct feed into the soil directly or piled up and decomposed. The process of agricultural production is also a process of energy conversion. During the growth process, crops need to constantly consume energy, and also need to constantly replenish energy, and constantly adjust the content of water, fertilizer, air, and heat in the soil. Straw contains a large amount of fresh organic materials, which can be converted into organic matter and available nutrients after a period of decomposition after being returned to the farmland.

For example, the application number: CN201810082836.9 The present invention provides a separate straw returning machine, which belongs to the technical field of straw returning. The straw returning machine moves from back to front on the ground, including rotary cutter, collecting net, ditching and sowing part and compacting rollers. The part is arranged on the rear side of the rotary cutter, including a bracket, a sowing part and a ditch opener arranged on the front surface of the bracket for ditching the ground, and a compacting roller contacting the ground for compacting the ground is set on the opening. Directly behind the ditch sowing section, the rear outlet of the collecting net is located at the rear of the ditching sowing section and in front of the compaction roller, and the front end of the collection net is higher than the rear outlet. The invention realizes the one-time mechanized operation of agricultural activities such as rotary tillage, straw collection, ditching, sowing, fertilization, straw covering, compaction and the like.

Based on the retrieval of the above patents and the discovery of equipment in the prior art, when straw is returning to the field, a tractor is usually used to drive the straw returning machine to crush the straw. However, the existing straw returning machine still has the following deficiencies in the actual use process, such as: 1. Although the existing straw returning machine can crush the straw, most of the straw after crushing is not directly turned over In the soil, the utilization rate of straw is reduced. Although it can be completed by another soil turning machine, this will increase the cost and energy consumption of straw returning to the field; 2. The rolling on the existing straw returning machine mechanism, because the contact area between the roller and the ground is small, the effect of the rolling mechanism is poor when rolling, and the rolling mechanism is usually fixedly installed on the straw returning machine, which makes the rolling mechanism elastic and flexible Poor; 3. When inspecting and maintaining the inside of the straw returning machine, since the shell is welded as a whole, it is necessary to reverse the entire straw returning machine for inspection and maintenance, which greatly reduces the convenience of inspection and maintenance of the straw returning machine sex.

Contents of the invention

In order to solve the above technical problems, the present invention provides an overturning, covering and mixing mechanism suitable for returning straw to the field, so as to solve the following deficiencies in the actual use of the existing straw returning machine, such as: 1. The existing straw Although the field returning machine can crush the straw, most of the crushed straw is not directly turned into the soil, which reduces the utilization rate of the straw. Although it can be completed by another soil turning machine, such a 2. The rolling mechanism on the existing straw returning machine, because the contact area between the roller and the ground is small, makes the rolling mechanism less effective when rolling. Moreover, the rolling mechanism is usually fixedly installed on the straw returning machine, which makes the rolling mechanism less elastic and flexible; 3. When inspecting and maintaining the inside of the straw returning machine, since the shell is a welded whole, it is necessary to The inspection and maintenance of the entire straw returning machine is reversed, which greatly reduces the convenience of the inspection and maintenance of the straw returning machine.

The purpose and effect of an overturning covering mixing mechanism suitable for straw returning to the field of the present invention are achieved by the following specific technical means:

An overturning and covering mixing mechanism suitable for straw returning to the field, comprising a transmission installed on the upper end surface of the front side of the casing, and a straw crushing mechanism and a soil turning mechanism are connected in rotation inside the casing; one side of the transmission outputs The shaft is connected to the transmission of the straw crushing mechanism through the first transmission mechanism, and the other end of the straw crushing mechanism is connected to the transmission of the soil turning mechanism through the second transmission mechanism; the first transmission mechanism and the second transmission mechanism are respectively installed on the left and right sides of the housing Both sides; the rear side of the housing is connected with a rolling mechanism, and the two slope surfaces on the upper part of the housing are both connected with a shielding mechanism through bolts.

Further, the housing also includes a support plate, a limiting plate, a limiting column, a connecting block, a rectangular opening and a threaded thickening block, one support plate is provided on the left and right sides of the housing, and two A limit plate and a limit column are arranged on the rear side of the opposite side of the support plate. The limit plate is located on the upper part of the limit column, and a rectangular chute is opened on the upper surface of the limit plate. The end faces are provided with connecting blocks, and the two slopes on the upper part of the housing are symmetrically provided with two rectangular openings, and the two rectangular openings are symmetrically provided with two screw threads. Thick block, the upper end surface of each threaded thickened block is provided with a threaded through hole penetrating through the slope surface of the shell;

Further, the rolling mechanism also includes brackets, pressure rollers, rolling belts, limit rods, springs, soil removal scrapers, annular grooves and bar-shaped blocks, the number of the brackets is two, and the two Each of the brackets is respectively rotatably connected to the opposite back sides of the two support plates in the housing through rotating shafts, and the two pressure rollers are connected to the opposite rear sides of the two brackets through rotating shafts, and the two pressure rollers are rotatably connected The outer peripheral surface of the pressure roller is connected with a rolling belt, and the upper end surfaces of the front sides of the two supports are provided with a limit rod, and each limit rod is equipped with a stopper on the upper end surface of the support. The upper part of the rear side of the two supports is equipped with a soil removal scraper through the pillars, and the outer peripheral surface of each of the pressing rollers is symmetrically provided with two annular grooves, and the inner peripheral surface of the rolling belt The surface is left-right symmetrical and provided with two strip-shaped clamping blocks, and the strip-shaped clamping blocks are engaged with the annular groove, and the two strip-shaped clamping blocks are distributed around the inner peripheral surface of the rolling belt. The distance between the bottom end surface of the soil removal scraper and the upper end surface of the rolling belt is two centimeters to three centimeters;

Further, the shielding mechanism also includes a concave slide rail and a mounting hole, the concave slide rail is fixedly connected to the rectangular opening opened on the upper slope surface of the housing, and a shielding mechanism is slidably connected inside the concave slide rail, and the shielding mechanism The upper end surface is left-right symmetrical with two mounting holes;

Further, the straw crushing mechanism also includes straw crushing knives, and the outer peripheral surface of the straw crushing mechanism is uniformly provided with thirteen detachable straw crushing knives;

Further, for the soil-turning mechanism, the installation block and the soil-turning claw, the outer peripheral surface of the soil-turning mechanism is uniformly provided with thirteen installation blocks, and each of the installation blocks is connected by a bolt. The soil turning claw;

Further, the first transmission mechanism also includes a three-slot driving wheel, a three-slot driven wheel, a first belt and a first protective case, the three-slot driving wheel is arranged on the output shaft on one side of the transmission, and the three-slots are driven from The driving wheel is arranged at one end of the straw crushing mechanism, and the three-slot driven wheel and the three-slot driving wheel are connected through three first belt transmissions. A first protective shell fixedly connected to one side of the support plate;

Further, the second transmission mechanism also includes a first double-groove pulley, a second double-groove pulley, a second belt and a second protective case, and the first double-groove pulley is arranged at the other end of the straw crushing mechanism, The second double-groove pulley is arranged at one end of the tillage mechanism, and the second double-groove pulley is connected to the first double-groove pulley through two second belt transmissions, and the first double-groove belt The outside of the wheel and the second double-groove pulley is provided with a second protective shell that is fixedly connected to one side of the other support plate in the casing.

Compared with the prior art, the present invention has the following beneficial effects:

Through the setting of the second transmission mechanism, the output shaft of the transmission drives the three-slot driving wheel to rotate, and then the three-slot driven wheel drives the straw crushing mechanism to rotate under the transmission action of the first belt, and the straw crushing knife rotates quickly to make The straw returning machine crushes the straw in the field while moving forward; while the straw crushing mechanism rotates, the soil turning mechanism rotates at the same time through the second transmission mechanism, and then through the rotation of the soil turning claws, The crushed straw is quickly turned into the soil and evenly mixed with the soil, which effectively improves the utilization rate of the straw, and can complete the work of turning the soil without using another soil turning machine, which greatly reduces the cost of straw returning to the field. cost and energy loss.

Through the setting of the shielding mechanism, when the inside of the straw returning machine needs inspection and maintenance, remove the two bolts connected to the shielding mechanism with a tool, then slide the shielding mechanism out of the concave slide rail and remove it. The straw crushing mechanism and soil turning mechanism inside the casing can be inspected and maintained through the rectangular opening on the casing. This structure is simple and easy to operate, which greatly improves the convenience of inspection and maintenance of the straw returning machine.

Description of drawings

FIG. 1 is a schematic structural diagram of a first viewing angle of the present invention.

Fig. 2 is a schematic structural diagram of a second viewing angle of the present invention.

Fig. 3 is a schematic structural diagram of the first transmission mechanism of the present invention.

Fig. 4 is a structural schematic diagram of the pressing roller of the present invention.

Fig. 5 is a structural schematic diagram of the rolling belt of the present invention.

Fig. 6 is a structural schematic diagram of the shielding mechanism of the present invention.

Fig. 7 is a schematic diagram of the structure of the present invention after removing the shielding mechanism.

FIG. 8 is a schematic diagram of a partially enlarged structure at A in FIG. 7 of the present invention.

Fig. 9 is a schematic structural diagram of the straw crushing mechanism of the present invention

Fig. 10 is a schematic structural diagram of the second transmission mechanism of the present invention

Fig. 11 is a structural schematic diagram of the soil turning mechanism of the present invention.

In the figure, the corresponding relationship between component names and drawing numbers is:

1. Housing; 101. Support plate; 102. Limiting plate; 103. Limiting column; 104. Connecting block; 105. Rectangular opening; 106. Thread thickening block; , bracket; 402, pressing roller; 403, rolling belt; 404, limit rod; 405, spring; 406, soil removal scraper; 407, annular groove; 408, bar block; 5, blocking mechanism; 501 , concave slide rail; 502, installation hole; 6, straw crushing mechanism; 601, straw crushing knife; 7, turning mechanism; 701, installation block; 702, turning claw; 8, first transmission mechanism; 801, three slots Driving wheel; 802, three-slot driven wheel; 803, the first belt; 804, the first protective shell; 9, the second transmission mechanism; 901, the first double-slot pulley; 902, the second double-slot pulley; 903, The second belt; 904, the second protective case.

Detailed ways

Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.

In the description of the present invention, unless otherwise stated, the meaning of "plurality" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer" , "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should therefore not be construed as limiting the invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral Ground connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Example:

As shown in accompanying drawing 1 to accompanying drawing 11:

The present invention provides an overturning covering mixing mechanism suitable for straw returning to the field, which includes: a transmission 2 is installed on the upper end surface of the front side of the casing 1, and a straw crushing mechanism 6 and a soil turning mechanism are rotatably connected inside the casing 1. Mechanism 7; the output shaft on one side of the transmission 2 is connected to the straw crushing mechanism 6 through the first transmission mechanism 8. The straw crushing mechanism 6 also includes a straw crushing knife 601, and the outer peripheral surface of the straw crushing mechanism 6 is uniformly provided with detachable ten Three straw crushing knives 601, as shown in Figure 9; the other end of the straw crushing mechanism 6 is connected to the earth turning mechanism 7 through the second transmission mechanism 9, and the second transmission mechanism 9 also includes a first double-groove pulley 901, The second double-groove pulley 902, the second belt 903 and the second protective shell 904, the first double-groove pulley 901 is arranged at the other end of the straw crushing mechanism 6, and the second double-groove pulley 902 is arranged at one end of the soil turning mechanism 7, And the second double-groove pulley 902 is connected with the first double-groove pulley 901 through two second belts 903. In 1, the second protective shell 904 connected to one side of the other support plate 101 is fixed; the first transmission mechanism 8 and the second transmission mechanism 9 are respectively installed on the left and right sides of the housing 1, and the first transmission mechanism 8 also includes three slots. Wheel 801, three-slot driven wheel 802, first belt 803 and first protective shell 804, three-slot driving wheel 801 is arranged on the output shaft on one side of transmission 2, three-slot driven wheel 802 is arranged at one end of straw crushing mechanism 6, and three The three-slot driven wheel 802 and the three-slot driving wheel 801 are connected through three first belts 803 in a transmission phase, and the three-slot driving wheel 801 and the three-slot driven wheel 802 are externally provided with one side of the support plate 101 in the housing 1. The connected first protective shell 804; the rear side of the shell 1 is connected with a rolling mechanism 4, and the rolling mechanism 4 also includes a bracket 401, a pressure roller 402, a rolling belt 403, a limit rod 404, a spring 405, and a soil removal scraper 406, the annular groove 407 and the bar-shaped block 408, the number of brackets 401 is two, and the two brackets 401 are respectively rotated and connected to the rear side of the two support plates 101 in the housing 1 through the rotating shaft, two Two pressure rollers 402 are connected to the rear side of the opposite surface of the support 401 through the rotation of the rotating shaft, and the outer peripheral surfaces of the two pressure rollers 402 are connected with a rolling belt 403, and a limit rod 404 is provided on the upper end surfaces of the front sides of the two supports 401, and A spring 405 positioned at the upper end surface of the support 401 is installed on the outside of each stop bar 404, so that the rolling mechanism 4 has good elasticity, and the top of the rear side of the two supports 401 is equipped with a soil removal scraper 406 by a pillar, such as As shown in accompanying drawing 1, the outer peripheral surface of each pressure roller 402 is provided with two annular grooves 407 in a left-right symmetrical shape, and two bar-shaped blocks 408 are arranged in a left-right symmetrical shape on the inner peripheral surface of the rolling belt 403, as attached As shown in Figure 5, and the bar-shaped clamping block 408 is clamped with the annular groove 407, through the setting of the bar-shaped clamping block 408, the rolling belt 403 is more stable when it is driven on the outer peripheral surface of the pressing roller 402, and the two bar-shaped clamping blocks Block 40 8 are distributed around the inner peripheral surface of the rolling belt 403, and the distance between the bottom end surface of the soil removal scraper 406 and the upper end surface of the rolling belt 403 is two centimeters to three centimeters. Through the setting of the soil removal scraper 406, the rolling The soil adhering to the pressing belt 403 during the rolling process can be effectively removed; the upper two slopes of the housing 1 are connected with a shielding mechanism 5 by bolts, and the shielding mechanism 5 also includes a concave slide rail 501 and a mounting hole 502, the concave slide rail 501 is fixedly connected to the rectangular opening 105 opened on the upper slope surface of the housing 1, and the inside of the concave slide rail 501 is slidably connected with a shielding mechanism 5, as shown in Figure 6, the upper end surface of the shielding mechanism 5 is left-right symmetrical There are two installation holes 502 in the shape.

Wherein, the housing 1 also includes a supporting plate 101, a limiting plate 102, a limiting column 103, a connecting block 104, a rectangular opening 105 and a thread thickening block 106, and a supporting plate 101 is provided on the left and right sides of the housing 1, and The rear sides of the two supporting plates 101 are provided with a limiter plate 102 and a limiter column 103, as shown in Figure 2, by setting the limiter column 103, the rolling mechanism 4 can obtain an effective limiter, and the limiter The position plate 102 is located on the upper part of the limit column 103, and the upper end surface of the limit plate 102 is provided with a rectangular chute, and the front end surface and the middle upper end surface of the housing 1 are provided with connecting blocks 104, so as to connect the straw returning machine to the tractor , the two slopes on the upper part of the housing 1 are symmetrically provided with two rectangular openings 105, and the two rectangular openings 105 are symmetrically arranged with two thread thickening blocks 106, and each thread thickening block 106 The upper end surfaces are all provided with threaded through holes penetrating through the slope of the housing 1, and the setting of the threaded thickening block 106 makes the installation of the shielding mechanism 5 more convenient.

Among them, the soil-turning mechanism 7, the installation block 701 and the soil-turning claw 702, the outer peripheral surface of the soil-turning mechanism 7 is uniformly provided with thirteen mounting blocks 701, and each mounting block 701 is connected with a soil-turning claw by bolts 702 , as shown in FIG. 11 , through the rotation of the soil-turning claw 702 , the straw returning machine has a better soil-turning effect.

When in use: connect the transmission 2 to the power output shaft of the tractor, drive the three-slot driving wheel 801 to rotate through the output shaft of the transmission 2, and then make the three-slot driven wheel 802 drive the straw crushing mechanism 6 to rotate under the transmission action of the first belt 803 , through the rapid rotation of the straw crushing knife 601, the straw returning machine is moved forward while crushing the straw in the field; while the straw crushing mechanism 6 is rotating, the second transmission mechanism 9 is used to turn the soil The mechanism 7 rotates at the same time, and then through the rotation of the soil turning claw 702, the crushed straw is quickly turned into the soil and evenly stirred with the soil, which effectively improves the utilization rate of the straw, and does not need to go through another turning method. Soil machinery can complete the work of turning the soil, which greatly reduces the cost and energy consumption of straw returning to the field;

After the straw is pulverized and turned over, it is rolled and leveled by the rolling mechanism 4, and through the cooperation of the two rollers 402 and the rolling belt 403, the rolling mechanism 4 has a larger contact area with the ground, effectively improving the rolling process. The leveling effect of the pressing mechanism 4 when rolling, and by setting the spring 405 between the bracket 401 and the limit plate 102, the rolling mechanism 4 has better elasticity when rolling the ground, effectively improving the rolling effect. The flexibility of mechanism 4 when rolling the ground;

When the inside of the straw returning machine needs inspection and maintenance, remove the two bolts connected to the shielding mechanism 5 with a tool, then slide the shielding mechanism 5 out of the concave slide rail 501 to remove it, and finally pass through the shell The rectangular opening 105 on the housing 1 can detect and maintain the straw crushing mechanism 6 and the soil turning mechanism 7 inside the casing 1. This structure is simple and easy to operate, which greatly improves the convenience of the straw returning machine for inspection and maintenance.

The embodiments of the present invention have been presented for purposes of illustration and description, but are not intended to be exhaustive or to limit the invention to the form disclosed. Many modifications and changes will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to better explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention and design various embodiments with various modifications as are suited to the particular use.

Claims (1)

1. An overturning and covering mixing mechanism suitable for straw returning to the field, characterized in that it includes a casing (1) and a transmission (2) is installed on the upper front side of the casing (1), and the casing (1) The internal rotation is connected with a straw crushing mechanism (6) and a soil turning mechanism (7); the output shaft on one side of the transmission (2) is connected to the straw crushing mechanism (6) through the first transmission mechanism (8), and the straw crushing The other end of the mechanism (6) is connected to the earth-turning mechanism (7) through the second transmission mechanism (9); the first transmission mechanism (8) and the second transmission mechanism (9) are respectively installed in the casing (1) The left and right sides; the rear side of the housing (1) is connected with a rolling mechanism (4), and the upper two slopes of the housing (1) are connected with a shielding mechanism (5) by bolts; The housing (1) also includes a supporting plate (101), a limiting plate (102), a limiting column (103), a connecting block (104), a rectangular opening (105) and a threaded thickening block (106). The housing (1) is provided with a support plate (101) on the left and right sides, and the two support plates (101) are provided with a limit plate (102) and a limit column (103). , the limiting plate (102) is located on the upper part of the limiting column (103), and the upper end surface of the limiting plate (102) is provided with a rectangular chute, and the front end surface of the housing (1) and the middle upper end surface are provided with connection Block (104), the two slopes on the upper part of the housing (1) are symmetrically provided with two rectangular openings (105), and the two rectangular openings (105) are symmetrically arranged There are two thread thickening blocks (106), and the upper end surface of each thread thickening block (106) is provided with a threaded through hole penetrating through the slope surface of the shell (1); The rolling mechanism (4) also includes a bracket (401), a pressing roller (402), a rolling belt (403), a limit rod (404), a spring (405), a soil removal scraper (406), an annular concave Groove (407) and bar-shaped block (408), the number of the brackets (401) is two, and the two brackets (401) are respectively connected to the two brackets (401) in the housing (1) through the rotating shaft The support plate (101) is opposite to the rear side, and the two support plates (401) are connected to the two pressing rollers (402) through rotation shafts, and the outer circumference of the two pressing rollers (402) A rolling belt (403) is connected to the surface, and a limit rod (404) is provided on the upper front surface of the two brackets (401), and each limit rod (404) is equipped with a One of the springs (405) located on the upper end surface of the bracket (401), the upper rear side of the two brackets (401) is equipped with a soil removal scraper (406) through a pillar, and the outer peripheral surface of each of the pressure rollers (402) There are two ring-shaped grooves (407) in a left-right symmetrical shape, and two strip-shaped blocks (408) are arranged in a left-right symmetrical shape on the inner peripheral surface of the rolling belt (403), and the strip-shaped The clamping block (408) is clamped with the annular groove (407), and the two strip-shaped clamping blocks (408) are distributed around the inner peripheral surface of the rolling belt (403), and the soil removal scraper ( 406) The distance between the bottom end surface and the upper end surface of the rolling belt (403) is two centimeters to three centimeters; The shielding mechanism (5) also includes a concave slide rail (501) and a mounting hole (502), the concave slide rail (501) is fixedly connected to the rectangular opening (105) opened on the upper slope surface of the housing (1), And the concave slide rail (501) is slidably connected with a shielding mechanism (5), and the upper end surface of the shielding mechanism (5) is left-right symmetrical with two mounting holes (502); The straw crushing mechanism (6) also includes straw crushing knives (601), and the outer peripheral surface of the straw crushing mechanism (6) is uniformly provided with thirteen detachable straw crushing knives (601); The soil-turning mechanism (7), the installation block (701) and the soil-turning claw (702), the outer peripheral surface of the soil-turning mechanism (7) is uniformly provided with thirteen installation blocks (701), and each Each of the mounting blocks (701) is connected with a soil turning claw (702) by bolts; The first transmission mechanism (8) also includes a three-slot driving wheel (801), a three-slot driven wheel (802), a first belt (803) and a first protective case (804), and the three-slot driving wheel (801 ) is set on the output shaft on one side of the transmission (2), the three-slot driven wheel (802) is set at one end of the straw crushing mechanism (6), and between the three-slot driven wheel (802) and the three-slot driving wheel (801) The three-slotted driving wheel (801) and the three-slotted driven wheel (802) are externally provided with one of the support plates (101) in the housing (1) A first protective shell (804) connected to a stationary phase on one side; The second transmission mechanism (9) also includes a first double-groove pulley (901), a second double-groove pulley (902), a second belt (903) and a second protective case (904), the first The double groove pulley (901) is set at the other end of the straw crushing mechanism (6), the second double groove pulley (902) is set at one end of the soil turning mechanism (7), and the second double groove pulley (902) and The first double-groove pulley (901) is connected through two second belts (903) in transmission, and the first double-groove pulley (901) and the second double-groove pulley (902) are equipped with A second protective shell (904) fixedly connected to one side of the other support plate (101) in the housing (1); Connect the transmission (2) to the power output shaft of the tractor, drive the three-slot driving wheel (801) to rotate through the output shaft of the transmission (2), and then drive the three-slot driven wheel (802) under the transmission action of the first belt (803) Drive the straw crushing mechanism (6) to rotate, and through the rapid rotation of the straw crushing knife (601), the straw returning machine will crush the straw in the field while moving forward; when the straw crushing mechanism (6) rotates At the same time, through the second transmission mechanism (9), the soil turning mechanism (7) is rotated at the same time, and then through the rotation of the soil turning claw (702), the crushed straw is quickly turned into the soil and evenly mixed with the soil. stirring; After the straw is pulverized and turned over, it is rolled and leveled by the rolling mechanism (4), and through the cooperation of the two rollers (402) and the rolling belt (403), the rolling mechanism (4) has a larger gap with the ground. contact area; and by setting a spring (405) between the bracket (401) and the limiting plate (102), the rolling mechanism (4) has better elasticity when rolling the ground; When the inside of the straw returning machine needs inspection and maintenance, remove the two bolts connected to the shielding mechanism (5) with a tool, and then slide the shielding mechanism (5) out of the concave slide rail (501) to remove it. .

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