Belt type potato precision seeder

Abstract

The utility model relates to agricultural machinery, in particular to a belt type potato precision seeder which is suitable for precision seeding of potatoes. A belt type potato precision seeder mainly comprises a stool, a seed box, a canvas plane belt, a belt roller, a seed cup, a chain wheel II, a chain wheel I, a chain I, a land wheel, a support, a ridging and soil covering disc and the like, and is characterized in that the belt roller is made of cast steel and is cylindrical, and a through hole and a through key groove are formed in the middle of the belt roller; the width of the canvas plane leather belt is 50cm, the perimeter is 220cm, and two through holes are transversely formed in the two sides of the canvas plane leather belt at intervals of 2cm; each seed cup is made of polyethylene plastic and is in a wine cup shape, two rectangular wings protrude out of the two sides of each seed cup, through holes are machined in the two wings, the number of the seed cups is 44, and 22 seed cups are arranged on the left side and the right side respectively and clamped inside. The mechanism provided by the utility model has the characteristics that: 1) the function of accurately controlling the seeding quantity of the potatoes is better realized; the structure is simple and novel, and popularization in the industry is easy.

Description

Technical Field

[0001] The utility model relates to agricultural machinery, in particular to a belt-type potato precision seeder suitable for potato precision sowing. Background Art

[0002] Potato planters are currently used in agricultural production, but these potato planters have low sowing accuracy. Summary of the Invention

[0003] The invention object of the utility model is to provide a belt-type potato precision seeder to realize the potato precision sowing function and further improve the potato sowing accuracy.

[0004] The utility model discloses a belt-type precision seeder, which is realized by the following technical scheme: a belt-type potato precision seeder, which consists of a rear pull support frame, a rear pull rod, a bench, a seed box, a 206 ball bearing, a 206 ball bearing seat, a canvas flat belt, a belt roller, a seed cup, a belt roller shaft, a sprocket II, a sprocket I, a chain I, a central pull rod support frame, a U-shaped bolt, a lower hanging support plate, a furrow opener, a ground wheel shaft, a ground wheel, a bracket, a ridging and covering disc and a ridging and covering disc fixing card, and is characterized in that: the bracket is made of hollow square steel, angle steel and steel plate, and consists of a lower frame, a seat plate, a belt roller bracket, a front middle cross beam, a rear middle cross beam, a front upper cross beam, a rear upper cross beam and a column assembly The lower frame of the bracket is welded with hollow square steel and is rectangular in shape. The seat plate of the bracket is processed with steel plate and is in the shape of a "cross". Rectangular blocks are protruding on both sides. The left middle part of the protruding rectangular block is close to the edge and is processed with 4 through holes in a rectangular distribution. The front and rear edges of the seat plate of the bracket are horizontally welded to the front and rear middle cross beams of the bracket respectively. The belt roller bracket of the bracket is welded with angle steel and is in an "L" shape. It has 2 12mm wide key slots processed longitudinally, a total of 4, 2 each in the front and rear. The belt roller brackets of the two front brackets are slightly shorter than those of the two rear brackets, and are symmetrically arranged left and right. Their upper ends are horizontally welded to the inside of the front and rear upper cross beams of the bracket. The lower ends are vertically welded to the upper surface of the seat plate of the bracket; the belt roller is made of cast steel, cylindrical, and has a through hole and a keyway in the middle; the canvas flat belt is 50cm wide and 220cm in circumference, and has two through holes processed horizontally at intervals of 2cm on both sides; the seed cup is made of polyethylene plastic and is in the shape of a wine glass, with rectangular wings protruding on both sides, and both wings are processed with through holes. There are 44 seed cups, 22 on each side, and the horizontal spacing of the seed cups is 20cm. The vertical spacing of the seed cups can be adjusted appropriately according to the spacing between potato plants. The excess seed cups can be removed, and each seed cup is installed on the canvas flat belt by 2 sets of flat-head bolts and nuts; the belt roller shaft is a through shaft, and its left end and middle A flat key groove is processed on the bottom, which passes through the middle of the belt roller and is connected to the belt roller through a flat key. The two ends of the belt roller are positioned with fixed clips. The front and rear belt roller shafts are respectively fixed to the front and rear belt roller brackets of the bracket through two 206 ball bearings, two 206 ball bearing seats, and four sets of bolts and nuts; the diameter of the ground wheel is 70cm, and a sprocket II is welded on the inner side of its hub. The ground wheel shaft is welded to both sides of the middle part of the lower frame of the bracket. The sprocket II is connected to the sprocket I through a chain, and the transmission ratio is 1:1; the sprocket I is installed on the left end of the front belt roller shaft through a flat key; there is one seed box on each side, which is made of steel plate and is fixed to the upper planes on the left and right sides of the middle part of the seat plate of the bracket through four sets of bolts and nuts;The bench is made of angle steel and steel plate, which consists of columns and a seat body. The columns of the bench are made of angle steel, and there are 4 of them with equal length. The seat body is made of steel plate and is in an "L" shape. The 4 columns of the bench are vertically welded to the 4 corner positions of the lower part of the seat body of the bench. When welding, the inner angle planes of the 4 columns of the bench are all facing inward. There are 2 benches in total, and the lower ends of the 4 columns of the left and right benches are respectively vertically welded to the rear sides of the seat plate of the bracket; the trencher is made of steel plate, which consists of a boot-type trenching shovel and a rod body. The rod body of the trencher is welded to the upper front side of the boot-type trenching shovel of the trencher, and the rod body of the trencher is fixed to the middle of the front horizontal center beam of the bracket by 2 sets of "U"-shaped bolts and nuts. The upper and lower positions of the trencher can be adjusted; the rear pull support frame is made of two steel plates, the upper end of which is processed with a through hole, and the lower end is vertically welded to the lower frame of the bracket. The middle part of the rear upper crossbeam; the lower suspension support plates are made of 4 pieces in total, which are made of steel plates, and the lower ends of which are processed with through holes. The left and right lower suspension support plates are respectively welded to the oblique lower part of the front crossbeam of the lower frame of the bracket; the central pull rod support frame is made of steel plates, which consists of two "Z"-shaped vertical plates and a horizontal connecting plate, the upper ends of which are processed with through holes, and the lower ends are welded to the upper plane of the front crossbeam of the lower frame of the bracket; the rear pull rod is made of steel pipe and has an "I"-shaped structure, the front end of which is connected to the central pull rod support frame by a cylindrical pin, and the rear end is connected to the rear pull support frame by a cylindrical pin; the ridging and covering disc fixing clamps are made of channel steel, and there are 2 pieces in total, the middle of which is processed with threaded holes. The left and right ridging and covering disc fixing clamps are welded to both sides of the rear end of the lower frame of the bracket, and the left and right ridging and covering discs are respectively installed inside the left and right ridging and covering disc fixing clamps by 1 bolt.

[0005] Compared to existing technologies, this new belt-type precision seeder offers the following advantages: Its design incorporates a canvas belt drive that carries the seed cups and bench, allowing for adjustable spacing between seed cups. This allows for better human-machine collaboration and precision potato seeding. The new mechanism features: 1) precise control of potato seeding rate; 2) a simple and novel structure, making it easy to promote within the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] The utility model is a belt type precision seeder with the following drawings:

[0007] Figure 1 This is a structural diagram of a belt-type precision seeder of the utility model;

[0008] Figure 2 This is a schematic diagram of the main structure of a belt-type precision seeder bracket of the utility model;

[0009] Figure 3 This is a schematic diagram of the top view of the structure of the belt-type precision seeder bracket of the utility model;

[0010] In the figure: 1. Rear pull support frame; 2. 206 ball bearing seat; 3. Belt roller; 4. Stool; 5. Seed box; 6. Rear pull rod; 7. Canvas flat belt; 8. Seed cup; 9. Belt roller; 10. Central pull rod support frame; 11. U-bolt; 12. Lower suspension support plate; 13. Furrow opener; 14. Sprocket I; 15. Chain I; 16. Sprocket II; 17. Ground wheel shaft; 18. Ground wheel; 19. Bracket; 20. Ridge-forming and covering disc; 21. Ridge-forming and covering disc fixing card. DETAILED DESCRIPTION

[0011] The technical solution of the belt-type precision seeder of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0012] A belt-type potato precision seeder, which consists of a rear pull support frame 1, a rear pull rod 6, a bench 4, a seed box 5, a 206 ball bearing, a 206 ball bearing seat 2, a canvas flat belt 7, a belt roller 9, a seed cup 8, a belt roller shaft 3, a sprocket II16, a sprocket I14, a chain I15, a central pull rod support frame 10, a U-bolt 11, a lower suspension support plate 12, a furrow opener 13, a ground wheel shaft 17, a ground wheel 18, a bracket 19, a ridging and covering disc 20 and a ridging and covering disc fixing card 21. It is characterized in that: the bracket 19 is made of hollow square steel, angle steel and steel plate, and is composed of a lower frame, a seat plate, a belt roller bracket, a front middle crossbeam, a rear middle crossbeam, a front upper crossbeam, a rear upper crossbeam and a column. The bracket 19 The lower frame is welded with hollow square steel and is rectangular in shape. The seat plate of the bracket 19 is processed with steel plate in the shape of a "cross". Rectangular blocks are protruding on both sides. The left middle part of the protruding rectangular block is close to the edge and is processed with 4 through holes in a rectangular distribution. The front and rear edges of the seat plate of the bracket 19 are horizontally welded to the front and rear middle crossbeams of the bracket 19 respectively. The belt roller bracket of the bracket 19 is welded with angle steel and is "L" shaped. It has 2 12mm wide key slots processed longitudinally. There are 4 of them, 2 in the front and 2 rear. The belt roller brackets of the front 2 brackets 19 are slightly shorter than those of the rear 2 brackets 19. They are symmetrically arranged left and right. Their upper ends are horizontally welded to the inside of the front and rear upper crossbeams of the bracket 19, and their lower ends are vertically welded Connected to the upper surface of the seat plate of the bracket 19; the belt roller 9 is made of cast steel and is a cylinder with a through hole and a keyway in the middle; the canvas flat belt 7 is 50 cm wide and 220 cm in circumference, and has two through holes processed at 2 cm intervals on both sides; the seed cup 8 is made of polyethylene plastic and is in the shape of a wine glass, with rectangular wings protruding on both sides, both wings are processed with through holes, there are 44 seed cups, 22 on each side, the horizontal spacing of the seed cups is 20 cm, and the vertical spacing of the seed cups 8 can be adjusted appropriately according to the needs of potato plant spacing, and the excess seed cups 8 can be removed. Each seed cup 8 is installed on the canvas flat belt 7 by 2 sets of flat head bolts and nuts; the belt roller shaft 3 is a through shaft, with a flat keyway processed on the left end and the middle, passing through the belt roller shaft. The middle part of the belt roller 9 is connected to the belt roller 9 through a flat key, and the two ends of the belt roller 9 are positioned with fixed clips. The front and rear belt roller shafts 3 are respectively fixedly mounted on the front and rear belt roller brackets of the bracket 19 through two 206 ball bearings, two 206 ball bearing seats 2, and four groups of bolts and nuts; the diameter of the ground wheel 18 is 70 cm, and a sprocket II16 is welded to the inner side of its hub. The ground wheel shaft 17 is welded to both sides of the middle part of the lower frame of the bracket 19, and the sprocket II16 is connected to the sprocket I14 through the chain 15, with a transmission ratio of 1:1; the sprocket I14 is installed at the left end of the front belt roller shaft through a flat key; the seed box 5 is one on each side, made of steel plate, and is fixedly mounted on the upper planes on the left and right sides of the middle part of the seat plate of the bracket 19 through four groups of bolts and nuts;The bench 4 is made of angle steel and steel plate, which consists of a column and a chair body. The columns of the bench 4 are made of angle steel, a total of 4, equal length, and the chair body of the bench 4 is made of steel plate in an "L" shape. The 4 columns of the bench 4 are vertically welded to the 4 corner positions of the lower part of the chair body of the bench 4. When welding, the inner angle planes of the 4 columns of the bench 4 are facing inward. There are 2 benches 4. The lower ends of the 4 columns of the left and right benches 4 are respectively vertically welded to the two rear ends of the seat plate of the bracket 19. Side; the trencher 13 is made of steel plate, which consists of a boot-type trenching shovel and a rod. The rod of the trencher 13 is welded to the upper front side of the boot-type trenching shovel of the trencher 13. The rod of the trencher 13 is fixedly mounted on the middle of the front middle crossbeam of the bracket 19 by two sets of "U"-shaped bolts 11 and nuts. The upper and lower positions of the trencher 13 can be adjusted; the rear pull support frame 1 is made of two steel plates, the upper end of which is processed with a through hole, and the lower end is vertically welded to the lower frame of the bracket 19 The middle part of the rear upper crossbeam of the frame; the lower suspension support plate 12 has a total of 4 pieces, which are made of steel plates, and the lower ends of which are processed with through holes. The left and right lower suspension support plates 12 are respectively welded to the oblique lower part of the front crossbeam of the lower frame of the bracket 19; the central pull rod support frame 10 is made of steel plate, which consists of two "Z"-shaped vertical plates and a horizontal connecting plate, the upper ends of which are processed with through holes, and the lower ends are welded to the upper plane of the front crossbeam of the lower frame of the bracket 19; the rear pull rod 6 is made of steel pipe and has an "I"-shaped structure. Its front end is connected to the central pull rod support frame 10 by a cylindrical pin, and its rear end is connected to the rear pull support frame 1 by a cylindrical pin; the ridging and covering disc fixing clamps 21 are made of channel steel, and there are a total of 2 pieces, the middle of which is processed with threaded holes. The left and right ridging and covering disc fixing clamps 21 are welded to both sides of the rear end of the lower frame of the bracket 19, and the left and right ridging and covering discs 20 are respectively installed inside the left and right ridging and covering disc fixing clamps 21 by 1 bolt.

[0013] Example 1

[0014] like Figure 1 、 Figure 2 、 Figure 3 As shown, the main structure and connection relationship of this embodiment are as follows:

[0015] A belt-type potato precision seeder, which consists of a rear pull support frame 1, a rear pull rod 6, a bench 4, a seed box 5, a 206 ball bearing, a 206 ball bearing seat 2, a canvas flat belt 7, a belt roller 9, a seed cup 8, a belt roller shaft 3, a sprocket II16, a sprocket I14, a chain I15, a central pull rod support frame 10, a U-bolt 11, a lower suspension support plate 12, a furrow opener 13, a ground wheel shaft 17, a ground wheel 18, a bracket 19, a ridging and covering disc 20 and a ridging and covering disc fixing card 21, characterized in that: the bracket 19 is made of 50×50×5mm hollow square steel, 50×50×5mm angle steel and 3mm thick steel plate, and consists of a lower frame, a seat plate, a belt roller bracket, a front middle cross beam, a rear middle cross beam, The front upper crossarm beam, the rear upper crossarm beam and the column are composed of the lower frame of the bracket 19, which is welded with 50×50×5mm hollow square steel and is rectangular in shape. The seat plate of the bracket 19 is processed with a thick 3mm steel plate and is in the shape of a "cross". Rectangular blocks are protruding on both sides. The left middle part of the protruding rectangular block is close to the edge and is processed with 4 ￠10mm through holes in a rectangular distribution. The front and rear edges of the seat plate of the bracket 19 are horizontally welded to the front and rear middle crossarm beams of the bracket 19 respectively. The belt roller bracket of the bracket 19 is welded with 50×50×5mm angle steel and is in an "L" shape. It has 2 12mm wide key slots processed longitudinally. There are 4 of them, 2 in the front and 2 in the back. The belt roller brackets of the front 2 brackets 19 are wider than the belts of the rear 2 brackets 19. The roller brackets are slightly shorter and are symmetrically arranged back to back on the left and right sides. Their upper ends are horizontally welded to the inner sides of the front and rear upper crossbeams of the bracket 19, and their lower ends are vertically welded to the upper surface of the seat plate of the bracket 19; the belt roller 9 is made of cast steel and is cylindrical. A ￠30mm through hole and a 10mm wide keyway are processed in the middle; the canvas flat belt 7 is 50cm wide and 220cm in circumference, and two ￠6mm through holes are processed horizontally on both sides at intervals of 2cm; the seed cup 8 is made of polyethylene plastic and is in the shape of a wine glass. Rectangular wings protrude from both sides, and both wings are processed with through holes. There are 44 seed cups in total, 22 on each side, and the lateral spacing of the seed cups is 20cm. The longitudinal spacing of the seed cups 8 can be adjusted appropriately according to the needs of potato plant spacing. The seed cup 8 can be removed, and each seed cup 8 is installed on the canvas flat belt 7 through 2 sets of M6×30mm flat head bolts and nuts; the belt roller shaft 3 is a through shaft, and a 10mm wide flat keyway is processed on its left end and middle part. It passes through the middle of the belt roller 9 and is connected to the belt roller 9 through a flat key. The two ends of the belt roller 9 are positioned with fixed clips. The front and rear belt roller shafts 3 are respectively fixed to the front and rear belt roller brackets of the bracket 19 through 2 206 ball bearings, 2 206 ball bearing seats, and 4 sets of bolts and nuts; the ground wheel 18 has a diameter of 70cm, and a sprocket II16 is welded to the inner side of its hub. The ground wheel shaft 17 is welded to both sides of the middle part of the lower frame of the bracket 19. The sprocket II16 is connected to the sprocket I14 through the chain 15, and the transmission ratio is 1:1.The sprocket I14 is installed at the left end of the front belt roller through a flat key; the seed box 5 is one on each side, and is made of 2mm thick steel plate, and is fixed to the upper planes on the left and right sides of the middle part of the seat plate of the bracket 19 by 4 sets of bolts and nuts; the bench 4 is made of 50×50×5mm angle steel and 2mm thick steel plate, which consists of a column and a chair body. The columns of the bench 4 are made of 50×50×5mm angle steel, and there are 4 of them with equal length. The body of the bench 4 is made of 2mm thick steel plate and is in an "L" shape. The 4 columns of the bench 4 are vertically welded to the lower part of the body of the bench 4. 4 angle positions, the inner angle planes of the 4 columns of the bench 4 are all facing inward when welding, there are 2 benches 4, and the lower ends of the 4 columns of the left and right benches 4 are respectively welded vertically to the rear sides of the seat plate of the bracket 19; the trencher 13 is made of 3mm thick steel plate, which consists of a boot-type trenching shovel and a rod body. The rod body of the trencher 13 is welded to the upper front side of the boot-type trenching shovel of the trencher 13, and the rod body of the trencher 13 is fixedly installed in the middle of the front middle crossbeam of the bracket 19 by 2 groups of "U"-shaped bolts 11 and nuts. The upper and lower positions of the trencher 13 can be adjusted; the rear pull support frame 1 adopts two The block is made of 50×5mm thick steel plate, the upper end of which is processed with a ￠20mm through hole, and the lower end is vertically welded to the middle of the rear upper crossbeam of the lower frame of the bracket 19; the lower suspension support plate 12 has a total of 4 pieces, which are processed with 5mm thick steel plate, and the lower end of which is processed with a ￠20mm through hole. The left and right lower suspension support plates 12 are respectively welded to the lower oblique part of the front crossbeam of the lower frame of the bracket 19; the central pull rod support frame 10 is made of 50×5mm steel plate, which consists of two "Z"-shaped vertical plates and horizontal connecting plates, the upper end of which is processed with a ￠20mm through hole, and the lower end is welded to the lower frame of the bracket 19 The rear tie rod 6 is made of steel pipe and has an I-shaped structure. Its front end is connected to the central tie rod support frame 10 via a cylindrical pin, and its rear end is connected to the rear support frame 1 via a cylindrical pin. The ridging and covering disc fixing clamps 21 are made of 40×4mm channel steel and are two in total. The middle part of the clamps has an M12mm threaded hole. The left and right ridging and covering disc fixing clamps 21 are welded to the rear ends of the lower frame of the bracket 19. The left and right ridging and covering discs 20 are respectively installed inside the left and right ridging and covering disc fixing clamps 21 with a M12×50mm bolt.

[0016] How it works

[0017] The belt-type potato precision seeder is connected to the wheeled tractor and debugged, the seed box 5 is filled with potato seed potatoes, and the two staff members who assist in collaborative sowing sit on the bench 4 and prepare for sowing. The seed cups 8 on the upper surface of the canvas flat belt 7 are all manually filled with potato seed potatoes in advance. The tractor is driven forward and the potato precision seeder is lowered. The ground wheel 18 rolls forward and drives the sprocket II16, chain I15, sprocket I14, belt roller 3, and belt roller 9 to drive the canvas flat belt 7 forward. When the seed cup 8 filled with potatoes rotates to the lower position, the potato seed potatoes fall into the seed furrow opened by the furrow opener 13 by their own weight, and the left and right ridge-forming and soil-covering discs 20 behind it rotate to form ridges and cover the soil; at the same time, the two staff members who assist in collaborative sowing take out potato seed potatoes from the seed box in time and add them to each empty seed cup 8 rotated to the upper surface of the canvas flat belt 7, thereby realizing human-machine collaborative potato precision sowing.

Claims

1. A belt-type potato precision seeder, comprising a rear pull support frame (1), a rear pull rod (6), a bench (4), a seed box (5), a 206 ball bearing, a 206 ball bearing seat (2), a canvas flat belt (7), a belt roller (9), a seed cup (8), a belt roller shaft (3), a sprocket II (16), a sprocket I (14), a chain I (15), a central pull rod support frame (10), a U-bolt (11), a lower suspension support plate (12), a furrow opener (13), a ground wheel shaft (17), a ground wheel (18), a bracket (19), a ridging and covering disc (20) and a ridging and covering disc fixing card (21), characterized in that: The bracket (19) is made of hollow square steel, angle steel and steel plate, and is composed of a lower frame, a seat plate, a belt roller bracket, a front middle cross beam, a rear middle cross beam, a front upper cross beam, a rear upper cross beam and a column. The lower frame of the bracket (19) is welded with hollow square steel and is rectangular. The seat plate of the bracket (19) is made of steel plate and is in the shape of a "cross". Rectangular blocks are protruding on both sides. The left middle part of the protruding rectangular block is close to the edge and is processed with 4 through holes in a rectangular distribution. The front and rear edges of the seat plate of the bracket (19) are respectively welded horizontally on the front and rear middle cross beams of the bracket (19). The belt roller bracket of the bracket (19) is welded with angle steel and is in the shape of a The belt rollers of the two front brackets (19) are slightly shorter than those of the two rear brackets (19), and are arranged symmetrically on the left and right sides. The upper ends thereof are horizontally welded to the inner sides of the front and rear upper crossbeams of the brackets (19), and the lower ends thereof are vertically welded to the upper surface of the seat plate of the brackets (19); the belt rollers (9) are made of cast steel, cylindrical, and have through holes and through key slots in the middle; the canvas flat belt (7) is 50 cm wide and 220 cm in circumference, and has two through holes transversely processed at intervals of 2 cm on both sides; the seed cup (8) is ) is made of polyethylene plastic and is in the shape of a wine glass. Two rectangular wings protrude from both sides, and both wings are processed with through holes. There are 44 seed cups in total, 22 on each side, and the horizontal spacing of the seed cups is 20 cm. The vertical spacing of the seed cups (8) can be appropriately adjusted according to the needs of potato plant spacing. The redundant seed cups (8) can be removed. Each seed cup (8) is installed on the canvas flat belt (7) through two sets of flat head bolts and nuts; the belt roller shaft (3) is a through shaft, and a flat key groove is processed on its left end and middle part. It passes through the middle part of the belt roller (9) and is connected to the belt roller (9) through a flat key. The two ends of the belt roller (9) are positioned with fixed clips. The front and rear belt roller shafts (3) are respectively fixed by two 206 rollers. Ball bearings, two 206 ball bearing seats (2), and four groups of bolts and nuts are fixedly mounted on the front and rear belt roller brackets of the bracket (19); the diameter of the ground wheel (18) is 70 cm, and a sprocket II (16) is welded on the inner side of its hub. The ground wheel shaft (17) is welded on both sides of the middle part of the lower frame of the bracket (19), and the sprocket II (16) is connected to the sprocket I (14) through a chain (15), with a transmission ratio of 1:1; the sprocket I (14) is installed on the left end of the front belt roller shaft through a flat key; the seed box (5) is one on each side, made of steel plate, and is fixedly mounted on the upper planes on the left and right sides of the middle part of the seat plate of the bracket (19) by four groups of bolts and nuts;The bench (4) is made of angle steel and steel plate, and is composed of columns and a chair body. The columns of the bench (4) are made of angle steel, and there are 4 of them, which are of equal length. The chair body of the bench (4) is made of steel plate and is in an "L" shape. The 4 columns of the bench (4) are vertically welded to the 4 corner positions of the lower part of the chair body of the bench (4). When welding, the inner angle planes of the 4 columns of the bench (4) are all facing inward. There are 2 benches (4). The lower ends of the 4 columns of the left and right benches (4) are respectively vertically welded to the seat plate of the bracket (19). The rear two sides; the trencher (13) is made of steel plates, which consists of a boot-type trenching shovel and a rod body, the rod body of the trencher (13) is welded to the upper front side of the boot-type trenching shovel of the trencher (13), and the rod body of the trencher (13) is fixedly installed in the middle of the front middle crossbeam of the bracket (19) through two groups of "U"-shaped bolts (11) and nuts. The upper and lower positions of the trencher (13) can be adjusted; the rear pull support frame (1) is made of two steel plates, the upper end of which is processed with a through hole, and the lower end is vertically welded to the bracket (1 9) is located in the middle of the rear upper crossbeam of the lower frame; the lower suspension support plates (12) are composed of 4 pieces, which are made of steel plates, with through holes processed at the lower ends, and the left and right lower suspension support plates (12) are respectively welded to the oblique lower part of the front crossbeam of the lower frame of the bracket (19); the central tie rod support frame (10) is made of steel plates, which consists of two "Z"-shaped vertical plates and a horizontal connecting plate, with through holes processed at the upper ends, and the lower ends are welded to the upper plane of the front crossbeam of the lower frame of the bracket (19); the rear tie rod (6) is made of steel The tube is made of a "I"-shaped structure, the front end of which is connected to the central pull rod support frame (10) through a cylindrical pin, and the rear end of which is connected to the rear pull support frame (1) through a cylindrical pin; the ridging and covering disc fixing clamps (21) are made of channel steel, and there are two of them, the middle of which is processed with a threaded hole. The left and right ridging and covering disc fixing clamps (21) are welded to the rear ends of the lower frame of the bracket (19), and the left and right ridging and covering discs (20) are respectively installed inside the left and right ridging and covering disc fixing clamps (21) by a bolt.

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