CN214902274U - Ground and underground straw smashing and returning device for rice - Google Patents

Abstract

The utility model discloses a ground and underground straw smashing and returning device for rice, which comprises a supporting plate, two pairs of rollers are fixedly connected with two sides of the bottom of the supporting plate, the two pairs of rollers are symmetrically arranged around the central axis of the supporting plate, one side of the supporting plate is provided with a spreading mechanism, and the top of the supporting plate is fixedly connected with a crushing box, the top of the crushing box is provided with a feed inlet, and the top of the inner cavity of the crushing box is provided with a first material collecting cover, the top of the first material collecting cover is fixedly connected on the inner wall of the crushing box, one side of the inner wall of the crushing box is fixedly connected with a first motor, the device has good crushing effect through a series of structures, and can make even the spreading in the field of the straw after smashing, in addition, have and prevent blockking up the structure, prevent that the straw from blockking up the feeding pipe when reinforced to characteristics such as influence crushing still field device's processing.

Description

Ground and underground straw smashing and returning device for rice

Technical Field

The utility model relates to a field is smashed to the straw, especially relates to a still field device is smashed to underground straw in rice ground.

Background

The device for crushing and returning the straws to the field needs to be used for returning the straws to the field, but the existing device for crushing and returning the straws to the field is poor in crushing effect and cannot enable the crushed straws to be uniformly paved in the field.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a device for crushing and returning underground straws to the field on the rice ground.

The utility model discloses an one of the purpose adopts following technical scheme to realize:

a device for smashing and returning underground straws to rice ground comprises a supporting plate, wherein two pairs of rollers are fixedly connected to two sides of the bottom of the supporting plate, the two pairs of rollers are symmetrically arranged around the central axis of the supporting plate, a spreading mechanism is arranged on one side of the supporting plate, a smashing box is fixedly connected to the top of the supporting plate, a feed inlet is formed in the top of the smashing box, a first material collecting cover is arranged at the top of an inner cavity of the smashing box, the top of the first material collecting cover is fixedly connected to the inner wall of the smashing box, a first motor is fixedly connected to one side of the inner wall of the smashing box, an output shaft of the first motor penetrates through the side wall of the first material collecting cover and is movably connected to the inner wall of the other side of the smashing box through a bearing, a plurality of smashing knives are fixedly connected to a shaft body of the output shaft of the first motor, the smashing knives are positioned in the inner cavity of the first material collecting cover, and a hydraulic cylinder is arranged below the first material collecting cover, the output shaft of the hydraulic cylinder is fixedly connected with a fixed plate, one side of the fixed plate, which is far away from the hydraulic cylinder, is fixedly connected with a U-shaped support, the front end face of the U-shaped support is fixedly connected with a second motor, the output shaft of the second motor penetrates through the side wall of the U-shaped support and is movably connected with the inner wall of the other side of the U-shaped support through a bearing, the output shaft of the second motor is fixedly connected with a first crushing roller, the outer wall of the rear side of the crushing box is fixedly connected with a third motor, the output shaft of the third motor penetrates through the side wall of the crushing box and is movably connected with the inner wall of the other side of the crushing box through a bearing, the output shaft of the third motor is fixedly connected with a second crushing roller, the outer wall of one side of the crushing box is fixedly connected with a first material pump, the first material suction pipe and a first material guide pipe are respectively and fixedly connected with the first material pump, and the pipe orifice of the other end of the first material suction pipe penetrates through the side wall of the crushing box, and a first fixing block is fixedly connected between the bottom of the first material guide pipe and the supporting plate.

Furthermore, an inclined plate is arranged below the U-shaped support, and two sides of the inclined plate are fixedly connected to the inner wall of one side and the inner wall of the bottom of the crushing box respectively.

Furthermore, smash one side outer wall fixedly connected with second material pump that the case kept away from first material pump, material pipe and second passage are inhaled to fixedly connected with second respectively on the second material pump, the second is inhaled the other end mouth of pipe of material pipe and is run through the lateral wall of smashing case and swash plate, the other end mouth of pipe of second passage runs through the lateral wall of smashing case and first cover that gathers materials.

Furthermore, the top of the crushing box is fixedly connected with two limiting bins which are symmetrically arranged around the central axis of the feeding hole, a limiting block is arranged in the limiting bin, a limiting rod is fixedly connected with one side of the limiting block close to the feed inlet, the other end of the limiting rod penetrates through the side wall of the limiting bin and is fixedly connected with a feeding pipe, one side of the feeding pipe is fixedly connected with a connecting block, a pipe orifice at the bottom end of the feeding pipe penetrates through the feeding hole and extends to the inner cavity of the crushing box, the top of one of the limiting bins is fixedly connected with a transmission motor, the output shaft of the transmission motor is fixedly connected with a turntable, the preceding terminal surface of carousel has the transfer line through pivot swing joint, the opposite side of transfer line is through pivot swing joint at the preceding terminal surface of connecting block, the diameter of inlet pipe is less than the diameter of feed inlet.

Furthermore, the cross sections of the limiting block and the limiting bin are rectangular, and the height of the limiting block is equal to the height of the inner front cavity of the limiting bin.

Further, the mechanism of evenly sharing includes the second fixed block, second fixed block fixed connection is at the lateral wall of one of them gyro wheel, just the opposite side fixedly connected with of second fixed block frame of evenly sharing, the top fixedly connected with second of frame of evenly sharing gathers materials the cover, the second gathers materials the cover and is located the below of first passage, just the second gathers materials the cover and one side fixedly connected with third fixed block of backup pad, the frame of evenly sharing keeps away from one side fixedly connected with two-way motor of second fixed block, two-way motor's output shaft extends to the both sides of frame of evenly sharing and the first sector gear of fixedly connected with, frame inner chamber both sides of evenly sharing are equipped with the dwang, the lateral wall and the fixedly connected with second sector gear of frame are run through to the one end of dwang, second sector gear meshes with second sector gear mutually, the other end of dwang passes through bearing swing joint at the opposite side inner wall of frame of evenly sharing, be equipped with two brush boards in the frame of spreading out flatly, the both sides fixedly connected with slider of brush board, the lateral wall of frame of spreading out flatly set up with slider assorted spout, the slider is located the spout, just fixedly connected with spring between the one side inner wall of dwang is kept away from to slider and spout, the bottom of brush board is provided with the brush hair, just the brush board is close to two wire rope of one side fixedly connected with of dwang, the winding of wire rope opposite side is on the dwang.

Furthermore, the two steel wire ropes are symmetrically arranged around the central axis of the brush plate.

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

1. the first motor, the crushing knife, the first collecting cover, the U-shaped support, the first crushing roller, the second crushing roller and the hydraulic cylinder are matched, so that the straws can be crushed, when the crushed straws are not up to the standard, the straws are guided into the first collecting cover again through the second material pump, the second material suction pipe and the second material guide pipe, and the distance between the first crushing roller and the second crushing roller is adjusted through the hydraulic cylinder, so that the crushing effect of the straws is improved;

2. through the matching among the limiting bin, the limiting rod, the limiting block, the transmission motor and the turntable, the feeding pipe can be shaken to prevent the straws from being blocked in the feeding pipe, so that the processing of the device is influenced;

3. through the cooperation between frame, the second cover that gathers materials, first sector gear, second sector gear, brush board, dwang and the wire rope of spreading out, can be with the even spreading out in the field of the straw piece that smashes.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a perspective view of the present embodiment;

FIG. 2 is an overall view of the present embodiment;

FIG. 3 is a top view of the spreading mechanism;

FIG. 4 is an enlarged view taken at A in FIG. 2;

figure 5 is a top view of the crush box and the third motor.

In the figure: 1. a support plate; 2. a roller; 3. a crushing box; 4. a feed inlet; 5. a first aggregate cover; 6. a first motor; 7. a crushing knife; 8. a hydraulic cylinder; 9. a fixing plate; 10. a U-shaped bracket; 11. a second motor; 12. a first crushing roller; 13. a third motor; 14. a second crushing roller; 15. a first material pump; 16. a first material suction pipe; 17. a first material guide pipe; 18. a first fixed block; 19. a sloping plate; 20. a second material pump; 21. a second material suction pipe; 22. a second material guide pipe; 23. a limiting bin; 24. a limiting block; 25. a limiting rod; 26. a feed pipe; 27. a drive motor; 28. a turntable; 29. a transmission rod; 30. a second fixed block; 31. flattening the frame; 32. a second aggregate cover; 33. a third fixed block; 34. a bi-directional motor; 35. a first sector gear; 36. Rotating the rod; 37. a second sector gear; 38. brushing the board; 39. a slider; 40. a chute; 41. a wire rope; 42. a spring.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 5, a ground underground straw smashing and returning device for rice comprises a support plate 1, two pairs of rollers 2 are fixedly connected to two sides of the bottom of the support plate 1, the two pairs of rollers 2 are symmetrically arranged about the central axis of the support plate 1, a spreading mechanism is arranged on one side of the support plate 1, the spreading mechanism comprises a second fixing block 30, the second fixing block 30 is fixedly connected to the side wall of one of the rollers 2, the other side of the second fixing block 30 is fixedly connected with a spreading frame 31, the top of the spreading frame 31 is fixedly connected with a second material collecting cover 32, the second material collecting cover 32 is positioned below a first material guide pipe 17, the second material collecting cover 32 is fixedly connected with a third fixing block 33 on one side of the support plate 1, a bidirectional motor 34 is fixedly connected to one side of the spreading frame 31 far away from the second fixing block 30, the output shaft of the bidirectional motor 34 extends to two sides of the spreading frame 31 and is fixedly connected with a first sector gear 35, the two sides of the inner cavity of the spreading frame 31 are provided with rotating rods 36, one end of each rotating rod 36 penetrates through the side wall of the spreading frame 31 and is fixedly connected with a second sector gear 37, the second sector gear 37 is meshed with the second sector gear 37, the other end of each rotating rod 36 is movably connected with the inner wall of the other side of the spreading frame 31 through a bearing, two brush plates 38 are arranged in the spreading frame 31, two sliding blocks 39 are fixedly connected with two sides of each brush plate 38, the side wall of the spreading frame 31 is provided with a sliding groove 40 matched with the sliding blocks 39, the sliding blocks 39 are positioned in the sliding grooves 40, springs 42 are fixedly connected between the sliding blocks 39 and the inner wall of one side of the sliding groove 40 far away from the rotating rod 36, the bottom of each brush plate 38 is provided with brush bristles, two steel wire ropes 41 are fixedly connected with one side of each brush plate 38 close to the rotating rod 36, the two steel wire ropes 41 are symmetrically arranged relative to the central axis of the brush plates 38, the stability of the brush plates 38 during movement is improved, and the brush plates 38 are prevented from lateral deviation, the other side of the steel wire rope 41 is wound on the rotating rod 36, the crushed straw chips can be evenly spread on the field through the spreading mechanism, the crushing box 3 is fixedly connected to the top of the supporting plate 1, the two limiting bins 23 are fixedly connected to the top of the crushing box 3, the two limiting bins 23 are symmetrically arranged about the central axis of the feeding port 4, the limiting blocks 24 are arranged in the limiting bins 23, the cross sections of the limiting blocks 24 and the limiting bins 23 are rectangular, the height of the limiting blocks 24 is equal to the height of the inner front cavity of the limiting bins 23, the feeding pipe 26 is limited to prevent the feeding pipe 26 from colliding with the side wall of the feeding port 4, the limiting rod 25 is fixedly connected to one side of the limiting blocks 24, which is close to the feeding port 4, the other end of the limiting rod 25 penetrates through the side wall of the limiting bins 23 and is fixedly connected with the feeding pipe 26, a connecting block is fixedly connected to one side of the feeding pipe 26, and the bottom end orifice of the feeding pipe 26 penetrates through the feeding port 4 and extends to the inner cavity of the crushing box 3, the top of one limiting bin 23 is fixedly connected with a transmission motor 27, an output shaft of the transmission motor 27 is fixedly connected with a rotary disc 28, the front end face of the rotary disc 28 is movably connected with a transmission rod 29 through a rotary shaft, the other side of the transmission rod 29 is movably connected with the front end face of the connecting block through a rotary shaft, the diameter of the feeding pipe 26 is smaller than that of the feeding port 4, the feeding pipe 26 can be shaken through the matching among the limiting bin 23, the limiting rod 25, the limiting block 24, the transmission motor 27 and the rotary disc 28 to prevent the straws from being blocked in the feeding pipe 26, so that the processing of the device is influenced, the outer wall of one side of the crushing box 3, which is far away from the first material pump 15, is fixedly connected with a second material pump 20, a second material suction pipe 21 and a second material guide pipe 22 are respectively and fixedly connected on the second material pump 20, the other end of the second material suction pipe 21 penetrates through the side walls of the crushing box 3 and the inclined plate 19, and the other end of the second material guide pipe 22 penetrates through the side walls of the crushing box 3 and the first material collecting cover 5, through the cooperation of the second material pump 20, the second material suction pipe 21 and the second material guide pipe 22, when the straw fragments do not reach the standard, the straws can be guided into the first material collection cover 5 again, so that the straws can be reprocessed until the straw fragments reach the standard, the top of the crushing box 3 is provided with the feed inlet 4, the top of the inner cavity of the crushing box 3 is provided with the first material collection cover 5, the top of the first material collection cover 5 is fixedly connected on the inner wall of the crushing box 3, one side of the inner wall of the crushing box 3 is fixedly connected with the first motor 6, the output shaft of the first motor 6 penetrates through the side wall of the first material collection cover 5 and is movably connected on the inner wall of the other side of the crushing box 3 through a bearing, the shaft body of the output shaft of the first motor 6 is fixedly connected with a plurality of crushing knives 7, the crushing knives 7 are positioned in the inner cavity of the first material collection cover 5, the lower part of the first material collection cover 5 is provided with a hydraulic cylinder 8, the output shaft of the hydraulic cylinder 8 is fixedly connected with a fixing plate 9, a U-shaped bracket 10 is fixedly connected to one side of the fixed plate 9 far away from the hydraulic cylinder 8, an inclined plate 19 is arranged below the U-shaped bracket 10, two sides of the inclined plate 19 are respectively and fixedly connected to the inner wall of one side and the inner wall of the bottom of the crushing box 3, crushed straws can be accumulated on one side of the crushing box 3 through the inclined plate 19 so as to be convenient for the first material pump 15 to suck straw scraps, a second motor 11 is fixedly connected to the front end face of the U-shaped bracket 10, an output shaft of the second motor 11 penetrates through the side wall of the U-shaped bracket 10 and is movably connected to the inner wall of the other side of the U-shaped bracket 10 through a bearing, a first crushing roller 12 is fixedly connected to the output shaft of the second motor 11, a third motor 13 is fixedly connected to the outer wall of the rear side of the crushing box 3, an output shaft of the third motor 13 penetrates through the side wall of the crushing box 3 and is movably connected to the inner wall of the other side of the crushing box 3 through a bearing, and a second crushing roller 14 is fixedly connected to the output shaft of the third motor 13, smash first material pump 15 of one side outer wall fixedly connected with of case 3, first material pump 15 is gone up first material suction pipe 16 and the first passage 17 of fixed connection respectively, and the other end mouth of pipe of first material suction pipe 16 runs through the lateral wall of smashing case 3, and fixedly connected with first fixed block 18 between the bottom of first passage 17 and the backup pad 1.

The working principle is as follows: when the utility model is used, the device is moved to a field needing to be smashed and returned through the roller 2, then all the external power sources of the electrical components are connected, then the straw needing to be smashed is added into the smashing box 3 through the inlet pipe 26, in the feeding process, the transmission motor 27 is started, the transmission motor 27 drives the turntable 28 to rotate, then the transmission rod 29 is driven to rotate through the turntable 28, the transmission rod 29 drives the inlet pipe 26 to move left and right, thereby preventing the straw from being blocked in the inlet pipe 26, then the first motor 6, the second motor 11 and the third motor 13 are started, the first motor 6 drives the smashing knife 7 to rotate, the straw can be preliminarily smashed through the smashing knife 7, the smashed straw can fall between the first smashing roller 12 and the second smashing roller 14 through the inclined plane of the first aggregate cover 5, then, the first smashing roller 12 and the second smashing roller 14 are respectively driven to rotate through the second motor 11 and the third motor 13, so as to crush the straw further through the first crushing roller 12 and the second crushing roller 14, and then, the first material pump 15 can be started, the first material pump 15 sucks the crushed straw at the bottom of the inner cavity of the crushing box 3 through the first suction pipe 16, and leads the straw scraps out of the crushing box 3 through the first guide pipe 17, at this time, the straw scraps can be observed, when the straw scraps do not meet the requirement, the second material pump 20 is started, the straw at the bottom of the inner cavity of the crushing box 3 is sucked out through the second material pump 20 and the second suction pipe 21, and is led into the first collecting cover 5 again through the second guide pipe 22, meanwhile, the hydraulic cylinder 8 is started, the hydraulic cylinder 8 pushes the U-shaped bracket 10 and the first crushing roller 12 to be close to the second crushing roller 14, so as to crush the straw scraps further by reducing the distance between the first crushing roller 12 and the second crushing roller 14, and then, the crushing operation can be repeated, when the straw piece reaches the requirement, lead to the frame of spreading out evenly 31 in with the straw piece through first material pump 15, and promote the device to one side removal, start two-way motor 34, two-way motor 34 drives first sector gear 35 rotatory, first sector gear 35 drives second sector gear 37 rotatory, then it is rotatory to drive dwang 36 through second sector gear 37, then, through the taut wire rope 41 of dwang 36, and then pulling brush board 38 removes and extension spring 42 towards the direction of dwang 36, afterwards, make two-way motor 34 reverse rotation, and then the elasticity reset action pulling brush board 38 through spring 42 keeps away from dwang 36, thereby promote the straw spreading out on the field evenly through the reciprocating motion of brush board 38 and its bottom brush hair, it is above that the utility model discloses a whole course of work.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims (7)

1. The utility model provides a still field device is smashed to rice ground underground straw, includes backup pad (1), its characterized in that: the bottom two sides of the supporting plate (1) are fixedly connected with two pairs of idler wheels (2), the two pairs of idler wheels (2) are symmetrically arranged about the central axis of the supporting plate (1), one side of the supporting plate (1) is provided with a spreading mechanism, the top of the supporting plate (1) is fixedly connected with a crushing box (3), the top of the crushing box (3) is provided with a feed inlet (4), the top of the inner cavity of the crushing box (3) is provided with a first material collecting cover (5), the top of the first material collecting cover (5) is fixedly connected on the inner wall of the crushing box (3), one side of the inner wall of the crushing box (3) is fixedly connected with a first motor (6), the output shaft of the first motor (6) penetrates through the side wall of the first material collecting cover (5) and is movably connected on the inner wall of the other side of the crushing box (3) through a bearing, and the shaft body of the output shaft of the first motor (6) is fixedly connected with a plurality of crushing knives (7), the crushing cutter (7) is positioned in an inner cavity of the first aggregate cover (5), a hydraulic cylinder (8) is arranged below the first aggregate cover (5), an output shaft fixedly connected with fixing plate (9) of the hydraulic cylinder (8), one side of the fixing plate (9) far away from the hydraulic cylinder (8) is fixedly connected with a U-shaped support (10), a front end face of the U-shaped support (10) is fixedly connected with a second motor (11), an output shaft of the second motor (11) penetrates through a side wall of the U-shaped support (10) and is movably connected to the inner wall of the other side of the U-shaped support (10) through a bearing, a first crushing roller (12) is fixedly connected to an output shaft of the second motor (11), a third motor (13) is fixedly connected to the outer wall of the rear side of the crushing box (3), an output shaft of the third motor (13) penetrates through a side wall of the crushing box (3) and is movably connected to the inner wall of the other side of the crushing box (3) through a bearing, and the output shaft of the third motor (13) is fixedly connected with a second crushing roller (14), the outer wall of one side of the crushing box (3) is fixedly connected with a first material pump (15), the first material pump (15) is respectively and fixedly connected with a first material suction pipe (16) and a first material guide pipe (17), the pipe orifice at the other end of the first material suction pipe (16) penetrates through the side wall of the crushing box (3), and a first fixing block (18) is fixedly connected between the bottom of the first material guide pipe (17) and the supporting plate (1).

2. The ground and underground straw smashing and returning device for rice as claimed in claim 1, wherein: an inclined plate (19) is arranged below the U-shaped support (10), and two sides of the inclined plate (19) are fixedly connected to the inner wall of one side and the inner wall of the bottom of the crushing box (3) respectively.

3. The ground and underground straw smashing and returning device for rice as claimed in claim 1, wherein: smash one side outer wall fixedly connected with second material pump (20) that first material pump (15) were kept away from in case (3), respectively fixedly connected with second on second material pump (20) inhales material pipe (21) and second passage (22), the second inhales the other end mouth of pipe of material pipe (21) and runs through the lateral wall of smashing case (3) and swash plate (19), the other end mouth of pipe of second passage (22) runs through the lateral wall of smashing case (3) and first cover (5) that gathers materials.

4. The ground and underground straw smashing and returning device for rice as claimed in claim 1, wherein: the top of the crushing box (3) is fixedly connected with two limiting bins (23), the two limiting bins (23) are symmetrically arranged about the central axis of the feeding port (4), a limiting block (24) is arranged in the limiting bin (23), one side of the limiting block (24) close to the feeding port (4) is fixedly connected with a limiting rod (25), the other end of the limiting rod (25) penetrates through the side wall of the limiting bin (23) and is fixedly connected with a feeding pipe (26), one side of the feeding pipe (26) is fixedly connected with a connecting block, the bottom pipe orifice of the feeding pipe (26) penetrates through the feeding port (4) and extends to the inner cavity of the crushing box (3), one of the top of the limiting bin (23) is fixedly connected with a transmission motor (27), the output shaft of the transmission motor (27) is fixedly connected with a turntable (28), the front end face of the turntable (28) is movably connected with a transmission rod (29) through a rotating shaft, the other side of transfer line (29) is through pivot swing joint at the preceding terminal surface of connecting block, the diameter of inlet pipe (26) is less than the diameter of feed inlet (4).

5. The ground and underground straw smashing and returning device for rice as claimed in claim 4, wherein: the cross sections of the limiting blocks (24) and the limiting bin (23) are rectangular, and the height of the limiting blocks (24) is equal to the height of an inner front cavity of the limiting bin (23).

6. The ground and underground straw smashing and returning device for rice as claimed in claim 1, wherein: it includes second fixed block (30) to put down a stand out the mechanism, second fixed block (30) fixed connection is at the lateral wall of one of them gyro wheel (2), just frame (31) is put down a stand out to the opposite side fixedly connected with of second fixed block (30), the top fixedly connected with second of putting down a stand out frame (31) gathers materials cover (32), the second gathers materials the below that cover (32) is located first passage (17), just the second gathers materials cover (32) and one side fixedly connected with third fixed block (33) of backup pad (1), one side fixedly connected with two-way motor (34) of second fixed block (30) are kept away from to put up a stand out frame (31), the output shaft of two-way motor (34) extends to the first sector gear (35) of both sides and fixedly connected with of putting down a stand out frame (31), put up a stand out frame (31) inner chamber both sides and be equipped with dwang (36), the one end of dwang (36) runs through the lateral wall and fixedly connected with second sector gear (37) of putting up a stand out frame (31) The second sector gear (37) is meshed with the second sector gear (37), the other end of the rotating rod (36) is movably connected to the inner wall of the other side of the spreading frame (31) through a bearing, two brush plates (38) are arranged in the spreading frame (31), slide blocks (39) are fixedly connected with the two sides of the brush plates (38), the side wall of the spreading frame (31) is provided with a sliding groove (40) matched with the sliding block (39), the sliding block (39) is positioned in the sliding groove (40), a spring (42) is fixedly connected between the slide block (39) and the inner wall of one side of the slide groove (40) far away from the rotating rod (36), the bottom of the brush plate (38) is provided with brush hair, and one side of the brush plate (38) close to the rotating rod (36) is fixedly connected with two steel wire ropes (41), and the other side of each steel wire rope (41) is wound on the rotating rod (36).

7. The ground and underground straw smashing and returning device for rice as claimed in claim 6, wherein: the two steel wire ropes (41) are symmetrically arranged around the central axis of the brush plate (38).

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