A farmland stone picking machine for collecting, picking up and crushing stones and returning them to the field

Abstract

The present invention discloses a farmland stone picking machine for collecting, picking up and crushing stones to return to the field, belonging to the field of agricultural field operation equipment. A farmland stone picking machine for collecting, picking up and crushing stones to return to the field comprises a carriage, and also comprises: a bracket, which is detachably mounted on the front end of the carriage, wherein second rollers are fixedly mounted on both sides of the carriage, a stone collecting part is provided on the carriage, and the stone collecting part is used to gather stones to the middle part of the carriage, and a stone crusher is fixedly mounted on the tail of the carriage; a conveyor belt with an upwardly inclined output end is fixedly mounted in the carriage, wherein a stone picking part corresponding to the input end of the conveyor belt is provided at the bottom of the carriage, and the stone picking part is used to sweep the stones onto the conveyor belt; the rotating shafts distributed in an eight-shaped manner in the present invention greatly increase the stone collecting area, thereby improving the stone picking efficiency, and can also crush the collected stones and discharge them into the field, so that the stones can be recycled.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural field operation equipment, and in particular to a farmland stone picking machine which can collect and pick up stones and crush and return the stones to the fields. Background Art

[0002] Xinjiang has a vast land area, and some newly reclaimed farmlands are mixed with a lot of gravel, which has caused great trouble to agricultural planting. During the agricultural planting process, these gravels can easily cause varying degrees of damage to seeding machinery, seriously affecting the growth of crops and reducing agricultural production efficiency. In the past, the cleaning of these gravels mainly relied on manual picking, which was inefficient, had poor cleaning capacity, and could not meet the cleaning requirements.

[0003] In the prior art, there are also some stone picking equipment, but when applied to farmland in Xinjiang and other regions, due to the fact that farmland soil is mostly gravel of varying sizes, the existing stone picking machines have problems such as small working width and low efficiency. At the same time, the existing stone picking machines only have the function of picking up stones, and the collected stones are piled up on the edge of the field, resulting in a waste of resources.

[0004] Stone crushing and returning to the field can make the soil looser, increase soil aeration and water permeability, and be beneficial to the growth and development of plant roots. In addition, stone crushing can also increase the number and diversity of soil microorganisms, promote the growth and reproduction of beneficial microorganisms, and be beneficial to plant nutrient absorption and resistance to pests and diseases. Therefore, stone crushing and returning to the field can increase the yield and quality of crops, reduce the difficulty and cost of land cultivation, and also help protect the land ecological environment and sustainable development.

[0005] Therefore, a farmland stone picking machine with the function of collecting stones, picking up stones and crushing stones and returning them to the fields is badly needed. Summary of the invention

[0006] The purpose of the present invention is to solve the deficiencies in the prior art and to propose a farmland stone picking machine which can collect and pick up stones and crush the stones and return them to the fields.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A farm stone picking machine for collecting, picking up stones and crushing and returning the stones to the fields, comprises a carriage, and also comprises: a bracket detachably mounted on the front end of the carriage, wherein second rollers are fixedly mounted on both sides of the carriage, a stone collecting portion is provided on the carriage, the stone collecting portion is used to gather the stones to the middle of the carriage, and a stone crusher is fixedly mounted on the rear end of the carriage; a conveyor belt with an upwardly inclined output end is fixedly mounted in the carriage, wherein a stone picking portion corresponding to the input end of the conveyor belt is provided at the bottom of the carriage, the stone picking portion is used to sweep the stones onto the conveyor belt; a separation portion is arranged between the output end of the conveyor belt and the input end of the stone crusher, the separation portion is used to separate the soil from the outer wall of the stone.

[0009] In order to collect stones efficiently, preferably, the stone collecting part includes a mounting frame rotatably connected to both sides of the bracket, wherein a rotating shaft is rotatably mounted on the two mounting frames, wherein a threaded tooth rake is fixedly mounted on the outer walls of the two rotating shafts, and a driving device for driving the rotating shaft to rotate is fixedly mounted on the two mounting frames; two telescopic rods rotatably mounted on the bracket, and the telescopic ends of the two telescopic rods are rotatably connected to the side walls of the mounting frame respectively, wherein a first roller is fixedly mounted on the two mounting frames, and a second roller is fixedly mounted on both sides of the bracket.

[0010] In order to automatically pick up stones, preferably, the stone picking part includes a shovel plate fixedly connected to the bottom of the carriage, the lower end of the shovel plate extends to the bottom of the carriage, and a plurality of arc grooves are arranged on the shovel plate, wherein the lower end of the carriage is provided with a stone feed groove cooperating with the shovel plate, a roller is rotatably installed in the stone feed groove, a plurality of circumferentially distributed stone picking rods are fixedly installed on the outer wall of the roller, and a first motor that drives the roller to rotate is fixedly installed on the outer wall of the carriage.

[0011] In order to separate the soil blocks on the stones, preferably, the separation part includes a cylindrical cover inclined toward the crusher, which is arranged in the carriage, wherein a conveying pipe is rotatably connected in the cylindrical cover, one end of the conveying pipe extends into the crusher, and the lower end of the cylindrical cover is rotatably connected in the carriage through a rotating rod; a material guide shovel is fixedly installed at the output end of the conveyor belt, wherein the output end of the material guide shovel extends to the upper port of the conveying pipe, the outer wall of the conveying pipe is provided with a plurality of evenly distributed strip grooves, and the outer wall of the cylindrical cover is provided with a driving part for driving the conveying pipe to rotate.

[0012] In order to drive the conveying pipe to rotate, the driving unit further includes a second motor fixedly mounted on the outer wall of the cylindrical cover, a driving gear fixedly mounted on the output shaft of the second motor, wherein a driven gear meshingly connected to the driving gear is fixedly mounted on the outer wall of the conveying pipe.

[0013] In order to make the conveying pipe swing up and down, further, a cam is fixedly installed on the outer wall of the movable end of the conveying pipe, a flat plate is fixedly connected in the carriage, the outer wall of the cam presses on the flat plate, and the outer wall of the cylindrical cover is elastically connected to the flat plate through a return spring.

[0014] In order to discharge the separated soil blocks back into the field, further, the lower end of the cylindrical cover is fixedly connected with a discharge cover extending to the lower end of the carriage.

[0015] In order to prevent soil and stones from getting stuck in the strip grooves, the outer wall of the lower end of the conveying pipe is further provided with an annular counterweight block located in a cylindrical cover, wherein the inner wall of the annular counterweight block is fixedly connected with sweeping plates respectively inserted in multiple strip grooves, and a pulling part for pulling the annular counterweight block to slide along the conveying pipe is provided in the carriage.

[0016] In order to make the sweeping plate slide back and forth in the strip groove, further, the pulling part includes a swivel rotatably connected to the axial end of the annular counterweight block, and a pull rope is fixedly connected to the swivel, wherein the upper end of the cylindrical cover is provided with a through hole, and the end of the pull rope passes through the through hole and is fixedly connected to the inner top of the car body, and the other end of the annular counterweight block is fixedly connected to an elastic rope, and the end of the elastic rope is slidably connected to the inner wall of the lower end of the cylindrical cover.

[0017] In order to prevent the sweeping plate from being stuck in the strip groove by stones, further, both sides of the plurality of sweeping plates are provided with chamfers.

[0018] Compared with the prior art, the present invention provides a farmland stone picker that can collect and pick up stones and crush and return the stones to the field, which has the following beneficial effects:

[0019] 1. The farmland stone picker for collecting, picking up and crushing stones back to the field drives two mounting frames to tilt toward the ground through telescopic rods until the mounting frames drive the tooth rakes on the rotating shafts to insert into the ground. At this time, the top view of the two rotating shafts is in an eight-shaped shape. The eight-shaped rotating shafts will greatly increase the stone collecting area, thereby improving the stone picking efficiency;

[0020] 2. The farmland stone collecting machine for collecting, picking up and crushing stones back to the field will convey the stones to the upper end of the conveying pipe through the conveyor belt, and the conveying pipe inclined toward the stone crusher will convey the stones to the stone crusher, and the stone crusher will crush the collected stones and discharge them into the field, so that the stones can be recycled;

[0021] 3. The farmland stone collecting machine for collecting, picking up and crushing stones back to the field drives the conveying pipe to rotate through the second motor, and the conveying pipe will cause the stones inside to roll over, and the stones will shake off the soil blocks on the outer wall, thereby reducing the soil blocks on the stones that affect the crushing effect of the stone crusher;

[0022] 4. The stone collecting machine for collecting, picking up and crushing stones back to the field can drive the cam to rotate through the rotating conveying pipe. The continuously rotating cam can make the conveying pipe swing up and down around the rotating rod, and the conveying pipe can drive the internal stones to swing, which can improve the effect of shaking off the soil blocks with stones and prevent the stones from getting stuck in the conveying pipe.

[0023] 5. The farm stone picking machine for collecting, picking up and crushing stones for returning to the field has a cylindrical cover that reciprocates so that the internal protrusions are more efficiently discharged from the lower end of the discharge cover to prevent soil blocks from being stuck. The reciprocating conveying pipe also strikes the output end of the guide shovel, so that the stones can slide into the conveying pipe more efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an axonometric structural schematic diagram of a farmland stone picker for collecting, picking up, crushing and returning stones to the field proposed by the present invention;

[0025] Figure 2 A schematic diagram of the structure of the stone collecting part of a farmland stone collecting machine for collecting, picking up and crushing stones and returning them to the field proposed by the present invention;

[0026] Figure 3 This is a schematic diagram of the cross-sectional structure of a carriage of a farmland stone picker for collecting, picking up and crushing stones and returning them to the field, as proposed by the present invention;

[0027] Figure 4 A schematic diagram of the structure of the stone picking part of a farmland stone picking machine for collecting, picking up and crushing stones and returning them to the field proposed by the present invention;

[0028] Figure 5 This is a schematic diagram of the isometric structure of a cylindrical cover of a farmland stone picker for collecting, picking up and crushing stones and returning them to the field proposed by the present invention;

[0029] Figure 6 This is a schematic diagram of the cross-sectional structure of a cylindrical cover of a farmland stone picker for collecting, picking up, crushing and returning stones to the field proposed by the present invention;

[0030] Figure 7 The present invention provides a schematic structural diagram of an annular counterweight block of a farmland stone picker for collecting, picking up and crushing stones and returning them to the field.

[0031] In the figure: 1, carriage; 2, bracket; 3, stone crusher; 4, shovel plate; 5, first motor; 6, roller; 7, stone picking rod; 8, guide shovel; 9, cylindrical cover; 10, conveying pipe; 11, perforation; 12, strip groove; 13, discharge cover; 14, mounting frame; 15, rotating shaft; 16, tooth rake; 17, first roller; 18, driving device; 19, telescopic rod; 20, second roller; 21, second motor; 22, driving gear; 23, cam; 24, rotating rod; 25, flat plate; 26, reset spring; 27, annular counterweight; 28, sweeping plate; 29, elastic rope; 30, swivel; 31, pull rope; 32, driven gear; 33, arc groove; 34, conveyor belt. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] Embodiment 1:

[0035] Reference Figure 1-Figure 7 A farm stone picking machine for collecting, picking up stones and crushing and returning stones to the field, comprises a carriage 1, and also comprises: a bracket 2, which is detachably mounted on the front end of the carriage 1, wherein second rollers 20 are fixedly mounted on both sides of the carriage 1, a stone collecting part is provided on the carriage 1, and the stone collecting part is used to gather the stones to the middle part of the carriage 1, and a stone crusher 3 is fixedly mounted at the tail end of the carriage 1; a conveyor belt 34 with an upward inclination at the output end is fixedly mounted in the carriage 1, wherein a stone picking part corresponding to the input end of the conveyor belt 34 is provided at the bottom of the carriage 1, and the stone picking part is used to sweep the stones onto the conveyor belt 34; a separation part is arranged between the output end of the conveyor belt 34 and the input end of the stone crusher 3, the stone crusher 3 is an impact crusher, and the impact crusher crushes the stones at least three times, and the separation part is used to separate the soil from the outer wall of the stone.

[0036] When in use, the bracket 2 is fixed to the tail of the tractor, and then the whole equipment is pulled by the tractor to move in the field. When picking up stones, the stone collecting part can bring the stones in the field closer to the middle part of the carriage 1 in a larger area, so as to effectively improve the efficiency of picking up stones, and the stone picking part will automatically sweep the concentrated stones onto the conveyor belt 34, and the conveyor belt 34 will separate the soil from the picked stones through the separation part, and finally discharge them into the stone crusher 3 for crushing, and the crushed stones will be dropped into the field again, and the stones picked up can make the soil looser after the stones are crushed and returned to the field, increase the air permeability and water permeability of the soil, and be conducive to the growth and development of the plant root system. In addition, the stone crushing can also increase the number and diversity of microorganisms in the soil, promote the growth and reproduction of beneficial microorganisms, and be conducive to the absorption of nutrients and resistance to pests and diseases in plants. Therefore, the stone crushing and returning to the field can improve the yield and quality of crops, reduce the difficulty and cost of land cultivation, and also help protect the ecological environment and sustainable development of the land.

[0037] Considering that the crusher needs to be connected to the end of the stone picker, it is affected by quality, efficiency, etc. The impact crusher adopts four pendulums and two impact plates as the design, which can reduce the weight of the crusher and complete the stone crushing task efficiently.

[0038] Embodiment 2:

[0039] Reference Figure 1 and Figure 2 , which is basically the same as Example 1, and further, a specific implementation plan of the stone collecting part is specifically disclosed.

[0040] The stone collecting part includes a mounting frame 14 rotatably connected to both sides of the bracket 2, and a rotating shaft 15 is rotatably mounted on the two mounting frames 14, wherein a threaded tooth rake 16 is fixedly mounted on the outer wall of the two rotating shafts 15, and a driving device 18 for driving the rotating shaft 15 to rotate is fixedly mounted on the two mounting frames 14, and the driving device 18 is a servo motor; two telescopic rods 19 rotatably mounted on the bracket 2, and the telescopic ends of the two telescopic rods 19 are rotatably connected to the side walls of the mounting frame 14, wherein a first roller 17 is fixedly mounted on the two mounting frames 14, and a second roller 20 is fixedly mounted on both sides of the bracket 2.

[0041] When starting to pick up stones, the telescopic rod 19 drives the two mounting frames 14 to tilt toward the ground until the mounting frames 14 drive the tooth rake 16 on the rotating shaft 15 to be inserted into the ground. At this time, the top view of the two rotating shafts 15 is in an eight-shaped shape. The rotating shafts 15 distributed in an eight-shaped shape will greatly increase the stone collecting area, thereby improving the stone picking efficiency, and the first roller 17 and the second roller 20 can roll in the field, thereby supporting the entire device.

[0042] Embodiment 3:

[0043] Reference Figure 3 and Figure 4 , which is basically the same as Example 2, and further, a specific implementation plan of the stone picking part is specifically disclosed.

[0044] The stone picking part includes an arc-shaped shovel plate 4 fixedly connected to the bottom of the carriage 1, the lower end of the shovel plate 4 extends to the bottom of the carriage 1, and a plurality of arc-shaped grooves 33 are provided on the shovel plate 4, and the arc-shaped grooves 33 prevent most of the protrusions from being collected by the shovel plate 4, wherein a stone feeding groove cooperating with the shovel plate 4 is provided at the lower end of the carriage 1, a roller shaft 6 is rotatably installed in the stone feeding groove, and a plurality of arc-shaped stone picking rods 7 distributed circumferentially are fixedly installed on the outer wall of the carriage 1, and a first motor 5 driving the roller shaft 6 to rotate is fixedly installed on the outer wall of the carriage 1;

[0045] During the movement of the carriage 1, the downwardly inclined shovel plate 4 will shovel up the stones collected in the middle, and the first motor 5 will drive the roller 6 to rotate, and the roller 6 will sweep the stones scooped up by the shovel plate 4 onto the conveyor belt 34, thus completing the automatic collection of the stones;

[0046] In order to prevent the shovel plate 4 from contacting the ground when not in use, a lifting device may be installed at the bottom of the carriage 1, and then the shovel plate 4 may be installed at the telescopic end of the lifting device.

[0047] Embodiment 4:

[0048] Reference Figure 3 , Figure 5 as well as Figure 6 , which is basically the same as Example 3, and further discloses a specific implementation scheme of the separation unit.

[0049] The separation part includes a cylindrical cover 9 inclined toward the crusher 3 and arranged in the carriage 1, wherein a conveying pipe 10 is rotatably connected in the cylindrical cover 9, one end of the conveying pipe 10 extends into the crusher 3, and the lower end of the cylindrical cover 9 is rotatably connected to the carriage 1 through a rotating rod 24; a guide shovel 8 is fixedly installed at the output end of the conveyor belt 34, wherein the output end of the guide shovel 8 extends to the upper port of the conveying pipe 10, the outer wall of the conveying pipe 10 is provided with a plurality of evenly distributed strip grooves 12, the outer wall of the cylindrical cover 9 is provided with a driving part for driving the conveying pipe 10 to rotate, the driving part includes a second motor 21 fixedly installed on the outer wall of the cylindrical cover 9, a driving gear 22 is fixedly installed on the output shaft of the second motor 21, wherein a driven gear 32 meshingly connected to the driving gear 22 is fixedly installed on the outer wall of the conveying pipe 10, and a discharge cover 13 extending to the lower end of the carriage 1 is fixedly connected at the lower end of the cylindrical cover 9.

[0050] The conveyor belt 34 will convey the stones to the upper end of the conveying pipe 10, and the conveying pipe 10 inclined toward the crusher 3 will convey the stones to the crusher 3. The crusher 3 will crush the collected stones and discharge them into the field so that the stones can be recycled. The second motor 21 will drive the driven gear 32 to rotate through the driving gear 22, and the driven gear 32 will drive the conveying pipe 10 to rotate. The conveying pipe 10 will cause the internal stones to roll, and the stones will shake off the soil blocks on the outer wall and be discharged into the cylindrical cover 9 through the strip groove 12, and finally discharged back to the field from the discharge cover 13 at the lower end of the cylindrical cover 9, thereby reducing the soil blocks on the stones that affect the crushing effect of the crusher 3.

[0051] Furthermore, a cam 23 is fixedly mounted on the outer wall of the movable end of the delivery pipe 10, a flat plate 25 is fixedly connected inside the carriage 1, the outer wall of the cam 23 presses on the flat plate 25, and the outer wall of the cylindrical cover 9 is elastically connected to the flat plate 25 via a return spring 26;

[0052] When the conveying pipe 10 rotates, the conveying pipe 10 will drive the cam 23 to rotate. When the raised part of the cam 23 faces the flat plate 25, the conveying pipe 10 will be in an inclined state. When the raised part of the cam 23 faces upward, the return spring 26 will pull the cylindrical cover 9 and the conveying pipe 10 to rotate to a horizontal state. Then the continuously rotating cam 23 will cause the conveying pipe 10 to swing up and down around the rotating rod 24, and the conveying pipe 10 will drive the internal stones to swing. On the one hand, it improves the effect of shaking off the soil blocks with stones, and on the other hand, it can prevent the stones from being stuck in the conveying pipe 10. When the cylindrical cover 9 swings back and forth, the cylindrical cover 9 makes the internal soil blocks more efficiently discharged from the lower end of the discharge cover 13 to prevent the soil blocks from being stuck. In addition, the reciprocatingly swinging conveying pipe 10 will also knock on the output end of the guide shovel 8, so that the stones can slide into the conveying pipe 10 more efficiently.

[0053] Embodiment 5:

[0054] Reference Figure 6 and Figure 7 , which is basically the same as Example 4, and further, a specific implementation scheme for cleaning the strip groove 12 is specifically added.

[0055] The outer wall of the lower end of the conveying pipe 10 is sleeved with an annular counterweight block 27 located in the cylindrical cover 9, wherein the inner wall of the annular counterweight block 27 is fixedly connected with sweeping plates 28 respectively inserted in a plurality of strip grooves 12, and a pulling part for pulling the annular counterweight block 27 to slide along the conveying pipe 10 is provided in the carriage 1, and the pulling part includes a swivel 30 rotatably connected to the axial end of the annular counterweight block 27, and a pull rope 31 is fixedly connected to the swivel 30, wherein the upper end of the cylindrical cover 9 is provided with a through hole 11, and the end of the pull rope 31 passes through the through hole 11 and is fixedly connected to the inner top of the carriage 1, and the other end of the annular counterweight block 27 is fixedly connected with an elastic rope 29, and the end of the elastic rope 29 is slidably connected to the inner wall of the lower end of the cylindrical cover 9;

[0056] When the output end of the conveying pipe 10 tilts toward the crusher 3, the annular counterweight block 27 will slide toward the output end of the conveying pipe 10, and the annular counterweight block 27 will drive the sweeping plate 28 to slide in the strip groove 12. When the conveying pipe 10 swings to a horizontal position, the pull rope 31 will pull the annular counterweight block 27, and the annular counterweight block 27 will drive the sweeping plate 28 to slide toward the input end of the conveying pipe 10. Then, the reciprocatingly swinging conveying pipe 10 will cause the sweeping plate 28 to slide back and forth in the strip groove 12, thereby pushing out the soil and stones in the strip groove 12, thereby preventing the strip groove 12 from being blocked, thereby ensuring the efficiency of separating the protrusions.

[0057] Furthermore, both sides of the plurality of sweeping plates 28 are provided with chamfers, and the chamfers can prevent the sweeping plates 28 from getting stuck with stones in the strip grooves 12 .

[0058] When the stone collecting, picking up and crushing stone into the field machine is used, the bracket 2 is fixed to the tail of the tractor, and then the whole device is pulled by the tractor to move in the field. When picking up stones, the two mounting frames 14 are driven to tilt toward the ground by the telescopic rod 19 until the mounting frames 14 drive the toothed rake 16 on the rotating shaft 15 to be inserted into the ground. At this time, the top view of the two rotating shafts 15 is in an eight-shaped shape. The rotating shafts 15 distributed in the eight-shaped shape will greatly increase the stone collecting area, thereby improving the stone picking efficiency. Then, the two rotating shafts 15 are driven to rotate by the driving device 18, and the two rotating shafts 15 can drive the multiple tooth rakes 16 distributed in a spiral shape to sweep in a circle, and the tooth rakes 16 will dig out the stones in the field from the ground and push them toward the middle of the two rotating shafts 15. When the carriage 1 moves, the downwardly inclined shovel plate 4 will shovel up the stones collected in the middle, and the first motor 5 will drive the roller shaft 6 to rotate, and the roller shaft 6 will sweep the stones shoveled from the shovel plate 4 onto the conveyor belt 34, so that the automatic collection of stones can be completed;

[0059] The conveyor belt 34 will convey the stones to the upper end of the conveying pipe 10, and the conveying pipe 10 inclined toward the crusher 3 will convey the stones to the crusher 3. The crusher 3 will crush the collected stones and discharge them into the field so that the stones can be recycled. The second motor 21 will drive the driven gear 32 to rotate through the driving gear 22, and the driven gear 32 will drive the conveying pipe 10 to rotate. The conveying pipe 10 will cause the internal stones to roll, and the stones will shake off the soil blocks on the outer wall and be discharged into the cylindrical cover 9 through the strip groove 12, and finally discharged back to the field from the discharge cover 13 at the lower end of the cylindrical cover 9, thereby reducing the soil blocks on the stones that affect the crushing effect of the crusher 3.

[0060] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A farm stone collecting machine for collecting, picking up and crushing stones and returning them to the field, comprising a carriage (1), characterized in that: Also includes: The bracket (2) is detachably mounted on the front end of the carriage (1). Second rollers (20) are fixedly mounted on both sides of the carriage (1); a stone collecting portion is provided on the carriage (1), and the stone collecting portion is used to collect stones to the middle of the carriage (1); a stone crusher (3) is fixedly mounted at the rear of the carriage (1); A conveyor belt (34) with an upward tilt at the output end is fixedly installed in the carriage (1). The bottom of the carriage (1) is provided with a stone picking portion corresponding to the input end of the conveyor belt (34), and the stone picking portion is used to sweep stones onto the conveyor belt (34); A separation part, arranged between the output end of the conveyor belt (34) and the input end of the stone crusher (3), the separation part being used to separate the soil from the outer wall of the stone; The separation unit comprises: A cylindrical cover (9) inclined toward the stone crusher (3) is arranged in the carriage (1). A delivery pipe (10) is rotatably connected inside the cylindrical cover (9), one end of the delivery pipe (10) extends into the stone crusher (3), and the lower end of the cylindrical cover (9) is rotatably connected to the carriage (1) via a rotating rod (24); A guide shovel (8) is fixedly mounted on the output end of the conveyor belt (34). The output end of the guide shovel (8) extends to the upper end of the conveying pipe (10), the outer wall of the conveying pipe (10) is provided with a plurality of evenly distributed strip grooves (12), and the outer wall of the cylindrical cover (9) is provided with a driving part for driving the conveying pipe (10) to rotate; the driving part comprises: A second motor (21) is fixedly mounted on the outer wall of the cylindrical cover (9), and a driving gear (22) is fixedly mounted on the output shaft of the second motor (21). A driven gear (32) meshingly connected with the driving gear (22) is fixedly mounted on the outer wall of the delivery pipe (10); A cam (23) is fixedly mounted on the outer wall of the movable end of the delivery pipe (10); a flat plate (25) is fixedly connected inside the carriage (1); the outer wall of the cam (23) presses against the flat plate (25); and the outer wall of the cylindrical cover (9) and the flat plate (25) are elastically connected via a return spring (26); The outer wall of the lower end of the delivery pipe (10) is sleeved with an annular counterweight block (27) located in the cylindrical cover (9). The inner wall of the annular counterweight block (27) is fixedly connected with a sweeping plate (28) respectively inserted into a plurality of strip grooves (12), and a pulling part for pulling the annular counterweight block (27) to slide along the conveying pipe (10) is provided in the carriage (1); The pulling portion comprises: A swivel (30) is rotatably connected to the axial end of the annular counterweight (27), and a pull rope (31) is fixedly connected to the swivel (30). The upper end of the columnar cover (9) is provided with a through hole (11), the end of the pull rope (31) passes through the through hole (11) and is fixedly connected to the inner top of the carriage (1), and the other end of the annular counterweight (27) is fixedly connected to an elastic rope (29), and the end of the elastic rope (29) is slidably connected to the inner wall of the lower end of the columnar cover (9).

2. A farm stone collecting machine for collecting, picking up and crushing stones and returning them to the field according to claim 1, characterized in that: The stone collection unit comprises: The mounting frames (14) connected to the two sides of the bracket (2) are rotatably mounted with rotating shafts (15). Wherein, a threaded tooth rake (16) is fixedly mounted on the outer wall of the two rotating shafts (15), and a driving device (18) for driving the rotating shafts (15) to rotate is fixedly mounted on the two mounting frames (14); The two telescopic rods (19) are rotatably mounted on the bracket (2), and the telescopic ends of the two telescopic rods (19) are respectively rotatably connected to the side walls of the mounting frame (14). Wherein, first rollers (17) are fixedly mounted on both mounting frames (14), and second rollers (20) are fixedly mounted on both sides of the bracket (2).

3. The farmland stone collecting machine for collecting, picking up and crushing stones and returning them to the field according to claim 1, characterized in that: The stone picking unit comprises: A shovel plate (4) is fixedly connected to the bottom of the carriage (1), the lower end of the shovel plate (4) extends to the bottom of the carriage (1), and a plurality of arc-shaped grooves (33) are provided on the shovel plate (4). The lower end of the carriage (1) is provided with a stone feeding groove matched with a shovel plate (4), a roller shaft (6) is rotatably installed in the stone feeding groove, a plurality of stone picking rods (7) distributed in a circumference are fixedly installed on the outer wall of the roller shaft (6), and a first motor (5) for driving the roller shaft (6) to rotate is fixedly installed on the outer wall of the carriage (1).

4. A farm stone collecting machine for collecting, picking up and crushing stones and returning them to the field according to claim 1, characterized in that: The lower end of the columnar cover (9) is fixedly connected to a discharge cover (13) extending to the lower end of the carriage (1).

5. The farmland stone collecting machine for collecting, picking up and crushing stones and returning them to the field according to claim 1, characterized in that: Both sides of the plurality of sweeping plates (28) are provided with chamfers.

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