阅读说明：本技术 一种振动式土壤修复砂石粉碎筛分还田装置 (Vibrating type soil remediation gravel crushing, screening and returning device ) 是由 徐丽明 牛丛 邢钰婷 马帅 袁全春 闫成功 赵诗建 于 2019-07-30 设计创作，主要内容包括：本发明涉及一种振动式土壤修复砂石粉碎筛分还田装置,包括机架部分、松土部分、粉碎部分、筛土部分和作业深度调节部分。松土部分由变速箱驱动松土偏心轮和松土铲连接杆,带动松土铲上下振动,达到松土的目的；粉碎部分安装在筛土部分的内腔,粉碎部分通过变速箱驱动皮带传动组件带动粉碎轴,粉碎轴上安装多个粉碎锤爪,粉碎锤爪高速旋转,达到粉碎砂石的目的；筛土部分的筛分外壳的内壁安装多个且有一定孔隙的栅板,变速箱驱动筛分偏心轮,带动筛分外壳上下振动,破碎筛分后细碎的土,通过栅板孔隙透到筛分外壳的后面,无法穿透孔隙的大块砂石继续在筛分外壳的内腔与粉碎锤爪碰撞,直至破碎；装置采用限深轮控制作业深度。(The invention relates to a vibrating type soil remediation gravel crushing, screening and returning device which comprises a rack part, a soil loosening part, a crushing part, a soil screening part and an operation depth adjusting part. The soil loosening part drives a soil loosening eccentric wheel and a soil loosening shovel connecting rod through a gearbox to drive a soil loosening shovel to vibrate up and down, so that the purpose of loosening soil is achieved; the crushing part is arranged in an inner cavity of the soil sieving part, the crushing part drives the belt transmission assembly to drive the crushing shaft through the gearbox, a plurality of crushing hammer claws are arranged on the crushing shaft, and the crushing hammer claws rotate at high speed to achieve the aim of crushing gravel; the inner wall of the screening shell of the soil screening part is provided with a plurality of grid plates with certain pores, the gearbox drives the screening eccentric wheel to drive the screening shell to vibrate up and down, the screened fine soil is crushed and penetrates to the back of the screening shell through the gaps of the grid plates, and the large gravels which cannot penetrate through the pores continue to collide with the crushing hammer claws in the inner cavity of the screening shell until the large gravels are crushed; the device adopts the depth wheel to control the operation depth.)

1. The utility model provides a vibrating soil remediation grit is smashed and is sieved still field device which characterized in that includes: the device comprises a frame part, a soil loosening part, a crushing part, a soil sieving part and an operation depth adjusting part;

the frame part includes: the device comprises a rack (1), a three-point suspension (2), a gearbox (3) and a reinforcing pull rod (4); the three-point suspension (2) is arranged above the front end of the rack (1), and the gearbox (3) is arranged above the front part of the rack (1); the front end of the reinforcing pull rod (4) is connected with the upper end of the three-point suspension (2), and the rear end of the reinforcing pull rod is connected with the rear end of the rack (1);

the soil loosening part is arranged below the front part of the rack (1), the crushing part is arranged below the rear part of the rack (1), the soil sieving part is arranged at the rear end of the rack (1), and the operation depth adjusting part is arranged below the front end and the rear end of the rack (1);

The scarification part comprises: the soil loosening shovel comprises a soil loosening shovel (5), a soil loosening shovel fixing plate (6), a plurality of soil loosening eccentric wheels (7), a fixing lug plate (8), a plurality of soil loosening shovel connecting rods (9) and a soil loosening assembly shaft (26); the soil loosening assembly shaft (26) is connected with a left output shaft and a right output shaft of the gearbox (3), a plurality of soil loosening eccentric wheels (7) are mounted on the soil loosening assembly shaft (26), each soil loosening eccentric wheel (7) is connected with one soil loosening shovel connecting rod (9), the lower end of each soil loosening shovel connecting rod (9) is connected with the middle of a soil loosening shovel fixing plate (6), and the front end of the soil loosening shovel fixing plate (6) is movably mounted below the front end of the frame (1); the tail end of the break shovel fixing plate (6) is connected with a break shovel (5); under the rotation of the scarification eccentric wheel (7), the scarification shovel connecting rod (9) drives the scarification shovel (5) to vibrate up and down, so that the purpose of scarification is achieved;

The soil screening portion comprises: the screening device comprises a middle screening component connecting shaft (11), a screening eccentric wheel (14), a screening connecting rod (15), a screening shell (17), a grid plate (22), two screening component connecting shafts (27) and screening fixing lug plates (28); the front end of the middle screening component connecting shaft (11) is connected with the rear output end of the gearbox (3), and the middle screening component connecting shaft (11) is installed above the rear part of the rack (1); the machine frame (1) at the left side and the right side of the rear part of the middle screening component connecting shaft (11) is respectively provided with a screening component connecting shaft (27); the middle screening element connecting shaft (11) respectively transfers power to the two screening element connecting shafts (27) through two groups of chain transmission assemblies (12);

a screening shell (17) is movably arranged below the rear part of the rack (1); the middle screening component connecting shaft (11) and the two screening component connecting shafts (27) are respectively fixed with 1 screening eccentric wheel (14), each screening eccentric wheel (14) is connected with 1 screening connecting rod (15), and the lower end of each screening connecting rod (15) is connected to a screening shell (17); the upper half part of the grid plate (22) is fixedly arranged on the inner wall of the screening shell (17), and the grid plates (22) are multiple and provided with certain pores; the finely crushed soil is screened and leaked through the pores at the lower half part of the grid plate (22);

the crushing part is mounted in the inner cavity of the screening shell (17) and comprises: a crushing shaft (18), a crushing hammer claw (19), a crushing hammer claw base (20), a belt transmission assembly (21) and a crushing shaft support (29); the right end of the soil loosening assembly shaft (26) penetrates through a right longitudinal beam of the rack (1) to be connected with one end of the belt transmission assembly (21), and the other end of the belt transmission assembly (21) is connected with the crushing shaft (18); the crushing shaft supports (29) are welded on the longitudinal beams at the left side and the right side of the frame (1), and the crushing shaft (18) is fixedly arranged on the crushing shaft supports (29); a plurality of uniformly arranged crushing hammer claw bases (20) are arranged on the crushing shaft (18), and the top end of each crushing hammer claw base (20) is connected with a crushing hammer claw (19); a gap is reserved between the grid plate (22) and the crushing hammer claw (19), and the grid plate and the crushing hammer claw are matched with crushed sand;

The operation depth adjusting part comprises 4 depth limiting wheels (16) which are respectively fixed below the front end and the rear end of the frame (1) and used for controlling the operation depth.

2. A vibrating soil remediation, sand crushing, screening and returning apparatus as claimed in claim 1, wherein the ripping assembly shaft (26) is fixed at its central portion to the frame (1) by means of a bearing assembly (25).

3. a vibrating soil remediation, sand crushing, screening and returning device as claimed in claim 1, wherein the left and right output shafts of the gearbox (3) are connected to the soil loosening assembly shaft (26) through universal couplings (24), respectively.

4. A vibrating soil remediation, gravel crushing, screening and returning apparatus as claimed in claim 1, wherein the connection positions of the plurality of ripping eccentric wheels (7) and the plurality of ripping shovel connecting rods (9) are the same.

5. A vibrating soil remediation sand crushing screening returning to field device as claimed in claim 1, characterised in that the intermediate screening member connection shaft (11) is connected to the rear output of the gearbox (3) by means of a universal joint (10).

6. a vibrating soil remediation, gravel crushing, screening and returning device as claimed in claim 1, wherein a fixed ear plate (8) is mounted below the front end of the frame (1), and the front end of the break shovel fixing plate (6) is hinged and mounted in the fixed ear plate (8) and can rotate up and down around the fixed ear plate (8).

7. a vibrating soil remediation sand crushing screening returning to field device as claimed in claim 1, characterised in that the intermediate screening member connection shaft (11) and the two screening member connection shafts (27) are each mounted on a frame by means of 3 bearing blocks (13).

8. a vibrating soil remediation, sand crushing, screening and returning apparatus as claimed in claim 1, wherein two screening fixed lugs (28) are mounted below the rear of the frame (1); the upper front end of the screening shell (17) is hinged and arranged on the two screening fixing ear plates (28).

9. A vibrating soil remediation gravel crushing and screening return apparatus as claimed in claim 1, wherein a retaining plate (23) is provided behind the screening housing (17), and the upper end of the retaining plate (23) is fixed below the frame (1) for retaining the soil thrown back after crushing.

Technical Field

the invention relates to the technical field of agricultural machinery, in particular to a vibrating type soil remediation sandstone crushing, screening and returning device.

Background

The soil is mostly located in gobi deserts or mountains and hills, the surface or the interior of the soil is provided with a certain amount of gravels with different sizes, the gravels seriously affect the operation of agricultural machinery (rotary cultivators, weeding machines, subsoilers, fertilizer applicators and the like), and the sandy soil is beneficial to loosening and up-and-down ventilation of the soil. Therefore, it is necessary to crush and return the sand in the soil to the field, which is beneficial to the growth of crops.

In the existing production practice, large gravels on the ground surface are mainly picked up manually, and the small gravels are left in the soil; in a small part of areas, machines for picking up stones are adopted, the stones on the soil surface are picked up and then are unloaded at the head of the land, and are gathered into piles, so that agricultural production and operation of agricultural implements are influenced. However, crushing the sand and returning the sand to the field is not only beneficial to loosening soil, but also beneficial to the growth of crops (such as grapes, potatoes, peanuts, sweet potatoes and the like). Therefore, the inventor develops a soil macadam picking, crushing and returning device in the earlier stage, and the power consumption is large when the working machine is used for picking, crushing and returning stones in a crop plough layer (5-15 cm). Based on the situation, the invention designs the vibrating type soil remediation sandstone crushing, screening and returning device, which directly crushes and returns sandstone in soil (with the depth of 5-15cm) to restore soil, reduces operation links and reduces power consumption.

The invention is not reported at home and abroad by searching domestic and foreign patent documents, periodicals and other publicly published documents (such as the Internet), and the invention is not publicly published articles related to the invention at home and abroad and is unknown at home and abroad.

Disclosure of Invention

Aiming at the problems in the existing production practice, the invention aims to provide a vibrating type soil remediation sandstone crushing, screening and returning device. The technical problem to be solved by the invention is as follows: how to dig loose plough layer soil, how to smash the grit, how to sieve out the grit after the breakage.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:

The utility model provides a vibrating soil remediation grit is smashed and is sieved still field device, includes: the device comprises a frame part, a soil loosening part, a crushing part, a soil sieving part and an operation depth adjusting part;

The frame part includes: the device comprises a frame 1, a three-point suspension 2, a gearbox 3 and a reinforcing pull rod 4; the three-point suspension 2 is arranged above the front end of the frame 1, and the gearbox 3 is arranged above the front part of the frame 1; the front end of the reinforcing pull rod 4 is connected with the upper end of the three-point suspension 2, and the rear end of the reinforcing pull rod is connected with the rear end of the rack 1;

the soil loosening part is arranged below the front part of the frame 1, the crushing part is arranged below the rear part of the frame 1, the soil sieving part is arranged at the rear end of the frame 1, and the operation depth adjusting part is arranged below the front end and the rear end of the frame 1;

The scarification part comprises: the soil loosening shovel comprises a soil loosening shovel 5, a soil loosening shovel fixing plate 6, a plurality of soil loosening eccentric wheels 7, a fixing lug plate 8, a plurality of soil loosening shovel connecting rods 9 and a soil loosening assembly shaft 26; the soil loosening assembly shaft 26 is connected with the left output shaft and the right output shaft of the gearbox 3, a plurality of soil loosening eccentric wheels 7 are mounted on the soil loosening assembly shaft 26, each soil loosening eccentric wheel 7 is connected with one soil loosening shovel connecting rod 9, the lower end of each soil loosening shovel connecting rod 9 is connected with the middle of the soil loosening shovel fixing plate 6, and the front end of the soil loosening shovel fixing plate 6 is movably mounted below the front end of the frame 1; the tail end of the break shovel fixing plate 6 is connected with a break shovel 5; the loosening shovel 5 is driven to vibrate up and down under the rotation of the loosening eccentric wheel 7, so that the purpose of loosening the soil is achieved;

The soil screening portion comprises: the screening device comprises a middle screening component connecting shaft 11, a screening eccentric wheel 14, a screening connecting rod 15, a screening shell 17, a grid plate 22, two screening component connecting shafts 27 and screening fixing lug plates 28; the front end of the middle screening component connecting shaft 11 is connected with the rear output end of the gearbox 3, and the middle screening component connecting shaft 11 is arranged above the rear part of the rack 1; a screening component connecting shaft 27 is respectively arranged on the machine frame 1 at the left side and the right side of the rear part of the middle screening component connecting shaft 11; the intermediate screen element connecting shaft 11 transfers power to the two screen element connecting shafts 27 via two sets of chain drive assemblies 12, respectively;

a screening shell 17 is movably arranged below the rear part of the frame 1; the middle screening component connecting shaft 11 and the two screening component connecting shafts 27 are respectively fixed with 1 screening eccentric wheel 14, each screening eccentric wheel 14 is connected with 1 screening connecting rod 15, and the lower end of each screening connecting rod 15 is connected to the screening shell 17; the upper half part of the grid plate 22 is fixedly arranged on the inner wall of the screening shell 17, and the grid plates 22 are multiple and have certain pores; finely divided soil may be screened through the apertures in the lower half of the grid 22;

The crushing section is mounted in the inner chamber of the screening housing 17 and comprises: a crushing shaft 18, a crushing hammer claw 19, a crushing hammer claw base 20, a belt transmission assembly 21 and a crushing shaft bracket 29; the right end of the soil loosening assembly shaft 26 penetrates through a longitudinal beam on the right side of the frame 1 to be connected with one end of the belt transmission assembly 21, and the other end of the belt transmission assembly 21 is connected with the crushing shaft 18; the crushing shaft support 29 is welded on the longitudinal beams at the left and right sides of the frame 1, and the crushing shaft 18 is fixedly arranged on the crushing shaft support 29; a plurality of uniformly arranged crushing hammer claw bases 20 are arranged on the crushing shaft 18, and the top end of each crushing hammer claw base 20 is connected with a crushing hammer claw 19; the grid plate 22 and the crushing hammer claw 19 have a certain gap, and the grid plate and the crushing hammer claw can be matched to crush sand;

The operation depth adjusting part comprises 4 depth limiting wheels 16 which are respectively fixed below the front end and the rear end of the frame 1 and used for controlling the operation depth.

On the basis of the above technical solution, the middle part of the ripping assembly shaft 26 is fixed to the frame 1 through the bearing assembly 25.

On the basis of the technical scheme, the left output shaft and the right output shaft of the gearbox 3 are respectively connected with a soil loosening assembly shaft 26 through universal couplings 24.

on the basis of the technical scheme, the loosening eccentric wheels 7 and the loosening shovel connecting rods 9 are the same in number; the connecting positions of the plurality of loosening eccentric wheels 7 and the plurality of loosening shovel connecting rods 9 are the same.

On the basis of the technical scheme, the middle screening part connecting shaft 11 is connected with the rear output end of the gearbox 3 through a universal joint 10.

on the basis of the technical scheme, fixed otic placode 8 is installed to the front end below of frame 1, the front end hinge of break shovel fixed plate 6 is installed in fixed otic placode 8, can rotate from top to bottom around fixed otic placode 8.

on the basis of the above technical solution, the middle screening component connecting shaft 11 and the two screening component connecting shafts 27 are both mounted on the frame through 3 bearing blocks 13.

On the basis of the technical scheme, two screening fixing lug plates 28 are arranged below the rear part of the rack 1; the upper front end of the screening shell 17 is hinged on two screening fixing ear plates 28.

On the basis of the technical scheme, a soil retaining plate 23 is arranged behind the screening shell 17, and the upper end of the soil retaining plate 23 is fixed below the rack 1 and used for retaining ground soil thrown backwards.

The invention has the following beneficial effects:

The vibrating type soil remediation gravel crushing, screening and returning device can adjust the soil penetration depth of the working parts by adjusting the height of the operation depth adjusting part according to the condition of soil gravel. The power of the tractor PTO is connected with a gearbox 3 through a universal shaft, and is connected with a soil loosening part, a crushing part and a soil sieving part through a soil loosening eccentric wheel 7, a sieving eccentric wheel 14, a belt transmission assembly 21, a chain transmission assembly 12 and the like; in the driving process of the tractor, the break shovel 5 digs into the soil, and the break eccentric wheel 7 drives the break shovel 5 to vibrate up and down, so that the purpose of loosening the soil is achieved. The crushing part drives a belt transmission assembly 21 to drive a crushing shaft 18 to rotate through a gearbox 3, crushing hammer claws 19 on the crushing shaft 18 rotate at a high speed, and the crushing hammer claws 19 crush gravels preliminarily in soil; the soil primarily crushed by the crushing hammer claws 19 enters the grid plate 22, the grid plate 22 and the screening shell 17 vibrate up and down to screen sand and stone under the action of the screening eccentric wheel 14, the fine soil passes through the pores at the lower half part of the grid plate 22 and leaks to the back of the machine, and falls into the ground under the action of the retaining plate 23; the sand larger than the apertures of the grid 22 continues to collide with the crushing hammer claws 19 in the inner cavity of the screen housing 17 until it is crushed. By adopting the device, the sand and stone can be directly crushed and returned to the field in the soil (the soil depth is about 5-15cm), the soil is repaired, the operation links are reduced, and the power consumption is reduced.

drawings

The invention has the following drawings:

FIG. 1 is a schematic front view of the whole machine structure;

FIG. 2 is a schematic top view of the overall structure;

FIG. 3 is a schematic front view of a part of a crushing and screening soil structure;

FIG. 4 is a schematic top view of a portion of a crushing screen.

In the figure: 1. the crushing device comprises a frame, 2, a three-point suspension, 3, a gearbox, 4, a reinforcing pull rod, 5, a ripper, 6, a ripper fixing plate, 7, a ripper eccentric wheel, 8, a fixing lug plate, 9, a ripper connecting rod, 10, a universal joint, 11, an intermediate screening component connecting shaft, 12, a chain transmission assembly, 13, a bearing seat, 14, a screening eccentric wheel, 15, a screening connecting rod, 16, a depth wheel, 17, a screening shell, 18, a crushing shaft, 19, a crushing hammer claw, 20, a crushing hammer claw base, 21, a belt transmission assembly, 22, a grid plate, 23, a soil retaining plate, 24, a universal coupling, 25, a bearing assembly, 26, a ripping assembly shaft, 27, a screening component connecting shaft, 28, a screening fixing lug plate and 29, and a crushing shaft bracket.

Detailed Description

the following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

as shown in figures 1-4, a vibrating soil remediation gravel crushing and screening returning device comprises: the device comprises a frame part, a soil loosening part, a crushing part, a soil sieving part and an operation depth adjusting part;

The frame part includes: the device comprises a frame 1, a three-point suspension 2, a gearbox 3 and a reinforcing pull rod 4; the three-point suspension 2 is arranged above the front end of the frame 1, and the gearbox 3 is arranged above the front part of the frame 1; the front end of the reinforcing pull rod 4 is connected with the upper end of the three-point suspension 2, and the rear end of the reinforcing pull rod is connected with the rear end of the rack 1;

The soil loosening part is arranged below the front part of the frame 1, the crushing part is arranged below the rear part of the frame 1, the soil sieving part is arranged at the rear end of the frame 1, and the operation depth adjusting part is arranged below the front end and the rear end of the frame 1;

The scarification part comprises: the soil loosening shovel comprises a soil loosening shovel 5, a soil loosening shovel fixing plate 6, a plurality of soil loosening eccentric wheels 7, a fixing lug plate 8, a plurality of soil loosening shovel connecting rods 9 and a soil loosening assembly shaft 26; the soil loosening assembly shaft 26 is connected with the left output shaft and the right output shaft of the gearbox 3, a plurality of soil loosening eccentric wheels 7 are mounted on the soil loosening assembly shaft 26, each soil loosening eccentric wheel 7 is connected with one soil loosening shovel connecting rod 9, the lower end of each soil loosening shovel connecting rod 9 is connected with the middle of the soil loosening shovel fixing plate 6, and the front end of the soil loosening shovel fixing plate 6 is movably mounted below the front end of the frame 1; the tail end of the break shovel fixing plate 6 is connected with a break shovel 5; the loosening shovel 5 is driven to vibrate up and down under the rotation of the loosening eccentric wheel 7, so that the purpose of loosening the soil is achieved;

The soil screening portion comprises: the screening device comprises a middle screening component connecting shaft 11, a screening eccentric wheel 14, a screening connecting rod 15, a screening shell 17, a grid plate 22, two screening component connecting shafts 27 and screening fixing lug plates 28; the front end of the middle screening component connecting shaft 11 is connected with the rear output end of the gearbox 3, and the middle screening component connecting shaft 11 is arranged above the rear part of the rack 1; a screening component connecting shaft 27 is respectively arranged on the machine frame 1 at the left side and the right side of the rear part of the middle screening component connecting shaft 11; the intermediate screen element connecting shaft 11 transfers power to the two screen element connecting shafts 27 via two sets of chain drive assemblies 12, respectively;

A screening shell 17 is movably arranged below the rear part of the frame 1; the middle screening component connecting shaft 11 and the two screening component connecting shafts 27 are respectively fixed with 1 screening eccentric wheel 14, each screening eccentric wheel 14 is connected with 1 screening connecting rod 15, and the lower end of each screening connecting rod 15 is connected to the screening shell 17; the upper half part of the grid plate 22 is fixedly arranged on the inner wall of the screening shell 17, and the grid plates 22 are multiple and have certain pores; finely divided soil may be screened through the apertures in the lower half of the grid 22;

The crushing section is mounted in the inner chamber of the screening housing 17 and comprises: a crushing shaft 18, a crushing hammer claw 19, a crushing hammer claw base 20, a belt transmission assembly 21 and a crushing shaft bracket 29; the right end of the soil loosening assembly shaft 26 penetrates through a longitudinal beam on the right side of the frame 1 to be connected with one end of the belt transmission assembly 21, and the other end of the belt transmission assembly 21 is connected with the crushing shaft 18; the crushing shaft support 29 is welded on the longitudinal beams at the left and right sides of the frame 1, and the crushing shaft 18 is fixedly arranged on the crushing shaft support 29; a plurality of uniformly arranged crushing hammer claw bases 20 are arranged on the crushing shaft 18, and the top end of each crushing hammer claw base 20 is connected with a crushing hammer claw 19; the grid plate 22 and the crushing hammer claw 19 have a certain gap, and the grid plate and the crushing hammer claw can be matched to crush sand;

The operation depth adjusting part comprises 4 depth limiting wheels 16 which are respectively fixed below the front end and the rear end of the frame 1 and used for controlling the operation depth.

on the basis of the above technical solution, the middle part of the ripping assembly shaft 26 is fixed to the frame 1 through the bearing assembly 25.

On the basis of the technical scheme, the left output shaft and the right output shaft of the gearbox 3 are respectively connected with a soil loosening assembly shaft 26 through universal couplings 24.

On the basis of the technical scheme, the loosening eccentric wheels 7 and the loosening shovel connecting rods 9 are the same in number; the connecting positions of the plurality of loosening eccentric wheels 7 and the plurality of loosening shovel connecting rods 9 are the same.

on the basis of the technical scheme, the middle screening part connecting shaft 11 is connected with the rear output end of the gearbox 3 through a universal joint 10.

On the basis of the technical scheme, fixed otic placode 8 is installed to the front end below of frame 1, the front end hinge of break shovel fixed plate 6 is installed in fixed otic placode 8, can rotate from top to bottom around fixed otic placode 8.

on the basis of the above technical solution, the middle screening component connecting shaft 11 and the two screening component connecting shafts 27 are both mounted on the frame through 3 bearing blocks 13.

on the basis of the technical scheme, two screening fixing lug plates 28 are arranged below the rear part of the rack 1; the upper front end of the screening shell 17 is hinged on two screening fixing ear plates 28.

On the basis of the technical scheme, a soil retaining plate 23 is arranged behind the screening shell 17, and the upper end of the soil retaining plate 23 is fixed below the rack 1 and used for retaining ground soil thrown backwards.

The general working process of the invention is as follows: according to the condition of the sand and stones in the soil, the heights of the four depth wheels 16 in the device are adjusted, and then the depth of the working parts in the soil is adjusted; the tractor is connected with the device through a three-point suspension 2, the power of a tractor PTO is connected with a gearbox 3 through a universal shaft, and a soil loosening part, a crushing part and a soil sieving part are connected through a soil loosening eccentric wheel 7, a sieving eccentric wheel 14, a belt transmission component 21, a chain transmission component 12 and other parts; in the running process of the tractor, the break shovel 5 digs into the soil, and the break eccentric wheel 7 drives the break shovel 5 to vibrate up and down, so that the purpose of loosening the soil is achieved; the crushing part drives a belt transmission assembly 21 to drive a crushing shaft 18 to rotate through a gearbox 3, a plurality of crushing hammer claws 19 are arranged on the crushing shaft 18, the crushing hammer claws 19 rotate at a high speed, and the crushing hammer claws 19 crush gravels preliminarily in soil; the soil primarily crushed by the crushing hammer claws 19 enters the grid plate 22, the grid plate 22 and the screening shell 17 vibrate up and down to screen sand and stone under the action of the screening eccentric wheel 14, the fine soil passes through the pores at the lower half part of the grid plate 22 and leaks to the back of the machine, and falls into the ground under the action of the retaining plate 23; the sand larger than the apertures of the grid 22 continues to collide with the crushing hammer claws 19 in the inner cavity of the screen housing 17 until it is crushed.

the above embodiments are only for illustrating the invention and are not to be construed as limiting the invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention, therefore, all equivalent technical solutions also fall into the scope of the invention, and the scope of the invention is defined by the claims.

Those not described in detail in this specification are within the skill of the art.