Hanging device of self-propelled potato planter

Abstract

The invention relates to the field of tractor hooking farm tools, in particular to a hooking device of a self-propelled potato planter, which comprises a transition frame, a hydraulic cylinder, a connecting rod and a transition rod, the transition frame is a vertically mounted rectangular frame formed by connecting an upper rod, a left rod, a lower rod and a right rod end to end; the seeding single machine frame comprises a cross rod and two right-angle supports which are located at the two ends of the cross rod and are perpendicularly connected with the cross rod, each right-angle support comprises a vertical rod and a horizontal rod perpendicular to the vertical rod, and the connecting rods are four rod pieces of the same structure; the two connecting points on the left rod and the two connecting points on the vertical rod of the left right-angle support are rotationally connected with the two ends of the two connecting rods respectively to form a parallelogram structure. The seeding unit can swing left and right on the horizontal plane and float up and down on the vertical plane in the seeding operation state, and the seeding unit is fixedly connected with the traction machine in the road transportation state, so that left-right swing and up-down floating on the vertical plane cannot occur.

Description

Technical Field

[0001] The invention relates to the field of tractor-mounted agricultural implements, and in particular to a device for tractor-mounted potato planter. Background Art

[0002] Potato planting on small plots in hilly and mountainous areas requires a small planter. Therefore, using a self-propelled potato planter instead of the traditional tractor-mounted planter can significantly reduce the machine's overall size, making it easier to operate in confined spaces. However, a self-propelled potato planter requires the planter unit to be lowered to the ground for planting. The unit also needs to be able to float up and down and swing left and right to facilitate steering by the main machine (tractor). When operating on field roads, the planter unit must be raised off the ground. While raised, its various degrees of freedom must be restricted to avoid compromising safety. Furthermore, the unit must not interfere with the main machine components after being raised. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: how to provide a hooking device for a small planting machine that can be driven on field roads and is suitable for planting potatoes on small plots in hilly and mountainous areas.

[0004] The technical solution adopted by the present invention is: a hooking device for a self-propelled potato planter. During use, the vertically installed traction frame 2 at the tail of the tractor 9 and the sowing unit frame 6 installed at the head of the sowing unit 8 are connected through the hooking device. The hooking device includes a transition frame 3, a hydraulic cylinder 4, a connecting rod 5, and a transition rod 10. The transition frame 3 is a vertically installed rectangular frame formed by connecting the upper rod, the left rod, the lower rod, and the right rod end to end. The sowing unit frame 6 includes a cross bar, two right-angle brackets at both ends of the cross bar and vertically connected to the cross bar, each right-angle bracket includes a vertical rod and a horizontal rod perpendicular to the vertical rod, the connecting rod 5 is four rods of the same structure, the two connection points on the left rod and the left right-angle bracket The two connection points on the vertical rod are respectively rotatably connected to the two ends of the two connecting rods 5 to form a parallelogram structure. The two connection points on the right rod and the two connection points on the vertical rod of the right right-angle bracket are respectively rotatably connected to the two ends of the two connecting rods 5 to form a parallelogram structure. The middle part of the upper rod is connected to the upper part of the traction frame 2 through an upper pin 11, and the middle part of the lower rod is connected to the lower part of the traction frame 2 through a lower pin 12. The middle part of the upper rod is equipped with an upper ear seat 101, and the middle part of the cross rod is equipped with a lower ear seat 601. The lower ear seat 601 is rotatably connected to one end of the transition rod 10, and the other end of the transition rod 10 is rotatably connected to one end of the hydraulic cylinder 4. The other end of the hydraulic cylinder 4 is pin-connected to the upper ear seat 101.

[0005] The hitch device further includes an anti-sway bar 501 , wherein the upper connecting rod 5 of the two connecting rods 5 connected to the right rod and the upper connecting rod 5 of the two connecting rods 5 connected to the left rod are connected via two parallel anti-sway bars 501 .

[0006] The hanging device also includes two circular chains 13, the middle part of the upper connecting rod 5 of the two connecting rods 5 connected to the right rod is connected to one end of a circular chain 13 through a first connecting head 16, and the other end of the circular chain 13 is connected to the horizontal rod of the right right-angle bracket through a second connecting joint 7; the middle part of the upper connecting rod 5 of the two connecting rods 5 connected to the left rod is connected to one end of another circular chain 13 through a first connecting head 16, and the other end of the circular chain 13 is connected to the horizontal rod of the left right-angle bracket through a second connecting joint 7.

[0007] The first connecting head 16 is a round-link chain tensioner, the second connecting head 7 is a fastening bolt, and the round-link chain tensioner includes an adjusting bolt 14 and an adjusting nut 15 .

[0008] The traction frame 2 includes an upper connecting frame and a lower connecting frame of the traction frame fixed together at both ends. The upper connecting frame of the traction frame includes two upper connecting plates 201 and a vertical connecting rod 204. The two upper connecting plates 201 are symmetrically fixed at both ends of the vertical connecting rod 204. The lower connecting frame of the traction frame includes two lower connecting plates 202 and a vertical connecting plate 203. The two lower connecting plates 202 are symmetrically fixed at both ends of the vertical connecting plate 203. The upper connecting plate 201 below the upper connecting frame of the traction frame is fixed to the traction frame. A lower connecting plate 202 on the upper connecting frame of the traction frame is fixed together, and the front of the two upper connecting plates (201) and the two lower connecting plates 202 are provided with pin holes, and the rear of the two upper connecting plates 201 and the two lower connecting plates 202 are provided with bolt holes for fixing with the tail of the tractor 9. The upper connecting plate 201 on the upper connecting frame of the traction frame is connected to the upper rod through the upper pin shaft 11, and the upper connecting plate 201 on the lower connecting frame of the traction frame and the two lower connecting plates 202 on the lower connecting frame of the traction frame are connected to the lower rod through the lower pin shaft 12.

[0009] The traction machine 9 is connected to the traction frame 2 through the traction frame inclined frame 1.

[0010] The beneficial effects of the present invention are as follows: the present invention realizes that, in the sowing operation state, the sowing unit can swing left and right on the horizontal plane and float up and down on the vertical plane; in the road transportation state, the sowing unit is fixedly connected to the tractor and will not swing left and right or float up and down on the vertical plane. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of the present invention when a tractor and a sowing unit are connected; Figure 2This is a schematic structural diagram of the present invention in a sowing state viewed from the front to the back; Figure 3 This is a structural schematic diagram of the present invention in a sowing state viewed from the back to the front; Figure 4 This is a schematic diagram of the road transport state structure of the present invention; Figure 5 It is a structural schematic diagram of the traction frame of the present invention; Among them, 1. traction frame inclined frame, 2. traction frame, 3. transition frame, 4. hydraulic cylinder, 5. connecting rod, 6. sowing unit frame, 7. second connecting joint, 8. sowing unit, 9. traction machine, 10. transition rod, 11. upper pin shaft, 12. lower pin shaft, 13. circular chain, 14. adjustment bolt, 15. adjustment nut, 16. first connecting head, 201, upper connecting plate, 101, upper ear seat, 202, lower connecting plate, 203, vertical connecting plate, 204, vertical connecting rod, 501, anti-sway bar, 601, lower ear seat. DETAILED DESCRIPTION

[0012] like Figure 1 As shown, a coupling device of a self-propelled potato planter is provided. During use, the vertically mounted traction frame 2 at the tail of the tractor 9 and the sowing unit frame 6 mounted at the head of the sowing unit 8 are connected via the coupling device.

[0013] like Figure 2-3 As shown, the attachment device (i.e., the attachment device of a self-propelled potato planter of the present invention) includes a transition frame 3, a hydraulic cylinder 4 (a double-rod hydraulic cylinder in one embodiment), a connecting rod 5, and a transition rod 10. Figure 2 As shown, the transition frame 3 is a rectangular frame formed by connecting an upper rod, a left rod, a lower rod, and a right rod end-to-end, and is vertically mounted on the traction frame 2. The sowing unit frame 6 includes a crossbar and two right-angle brackets at either end of the crossbar and perpendicularly connected to the crossbar. Each right-angle bracket includes an upright rod and a horizontal rod perpendicular to the upright rod. The connecting rods 5 are four identical rods. Two connection points on the left rod and two connection points on the upright rod of the left right-angle bracket are respectively connected (herein, hinged) to the ends of the two connecting rods 5, forming a parallelogram structure. Two connection points on the right rod and two connection points on the upright rod of the right right-angle bracket are respectively connected (herein, hinged) to the ends of the two connecting rods 5, forming a parallelogram structure. This parallelogram structure ensures that the sowing unit frame 6 can only float horizontally up and down, preventing interference between the sowing unit 8 and other components of the traction machine 9.

[0014] The traction frame 2 adopts a double traction point structure. The middle part of the upper rod is connected to the upper part of the traction frame 2 through an upper pin shaft 11, and the middle part of the lower rod is connected to the lower part of the traction frame 2 through a lower pin shaft 12. The connecting line of the upper pin shaft 11 and the lower pin shaft 12 is parallel to the vertical connecting rod 204. The middle part of the upper rod is installed with an upper ear seat 101, and the middle part of the cross rod is installed with a lower ear seat 601. The lower ear seat 601 is rotatably connected to one end of the transition rod 10, and the other end of the transition rod 10 is rotatably connected to one end of the hydraulic cylinder 4. The other end of the hydraulic cylinder 4 is pin-connected to the upper ear seat 101.

[0015] like Figure 3-4 As shown, in order to improve the strength of each connecting rod 5 and prevent the connecting rod 5 from shaking and tilting due to the inability to rise and fall synchronously on the left and right sides, the hanging device also includes an anti-sway bar 501, and the upper connecting rod 5 of the two connecting rods 5 connected to the right rod and the upper connecting rod 5 of the two connecting rods 5 connected to the left rod are connected by two parallel anti-sway bars 501.

[0016] like Figure 2-4 As shown, the hanging device also includes two circular chains 13, the middle part of the upper connecting rod 5 of the two connecting rods 5 connected to the right rod is connected to one end of a circular chain 13 through a first connecting head 16, and the other end of the circular chain 13 is connected to the horizontal rod of the right right-angle bracket through a second connecting joint 7; the middle part of the upper connecting rod 5 of the two connecting rods 5 connected to the left rod is connected to one end of another circular chain 13 through a first connecting head 16, and the other end of the circular chain 13 is connected to the horizontal rod of the left right-angle bracket through a second connecting joint 7.

[0017] To ensure that the sowing unit 8 cannot swing around the upper and lower pins 11 and 12 when raised, the hydraulic cylinder 4 is retracted to its shortest position. The adjusting nut 15, which engages the adjusting bolt 14, is then adjusted until the circular chain 13 is taut (the left and right circular chains 13 should be adjusted symmetrically), aligning the centers of symmetry between the sowing unit 8 and the tractor 9. The adjusting nut 15 is then tightened, rigidly connecting the adjusting bolt 14 to the connecting rod 5. This restraint of the circular chains 13 on both sides ensures that the sowing unit 8 and the tractor 9 remain fixed during road travel, ensuring road safety. When field operations are required, the hydraulic cylinder 4 is extended to its longest position. The distance between the ends of the circular chain 13 is at its shortest, and the circular chain 13 is relaxed. This allows the sowing unit 8 to swing around the upper and lower pins 11 and 12 within a certain range. The tractor 9 is articulated with the sowing unit 8, facilitating adjustment of the tractor 9's forward direction.

[0018] The first connector 16 is a round-link chain tensioner, and the second connector 7 is a fastening bolt. The round-link chain tensioner includes an adjustment bolt 14 and an adjustment nut 15. Round-link chains and round-link chain tensioners are conventional technology. The present invention only uses a round-link chain with adjustable length. Therefore, a detailed description of the round-link chain and the round-link chain tensioner is omitted, as these are readily available commercially.

[0019] like Figure 5 As shown, the traction frame 2 includes an upper traction frame connecting frame and a lower traction frame connecting frame fixed together at both ends. The upper traction frame connecting frame includes two upper connecting plates 201 and a vertical connecting rod 204. The two upper connecting plates 201 are symmetrically fixed at both ends of the vertical connecting rod 204. The lower traction frame connecting frame includes two lower connecting plates 202 and a vertical connecting plate 203. The two lower connecting plates 202 are symmetrically fixed at both ends of the vertical connecting plate 203. The upper connecting plate 202 below the upper traction frame is fixed to the upper end of the vertical connecting plate 203. 1 is fixed to a lower connecting plate 202 on the upper side of the traction frame lower connecting frame. The two upper connecting plates 201 and the two lower connecting plates 202 have pin holes in front, and the two upper connecting plates 201 and the two lower connecting plates 202 have bolt holes on the rear side for fixing to the tail of the tractor 9. The upper connecting plate 201 on the upper connecting frame of the traction frame is connected to the upper rod via an upper pin 11, and the upper connecting plate 201 on the lower side of the traction frame upper connecting frame and the two lower connecting plates 202 on the lower connecting frame of the traction frame are connected to the lower rod via a lower pin 12. The design of the traction frame 2 of the present invention can meet the tensile strength requirements while avoiding material waste.

[0020] like Figure 1 As shown, in order to increase the strength and prevent the traction frame 2 from being bent, the traction machine 9 is connected to the traction frame 2 through the traction frame inclined bracket 1, as shown in FIG. Figure 2 As shown, the traction frame inclined bracket 1 includes two steel plates connected together in a parallel structure. The traction frame inclined bracket 1 is fixedly connected to the traction machine 9, and the traction frame inclined bracket 1 is pin-connected to the traction frame 2.

[0021] During field operation, the hydraulic cylinder 4 and transition rod 10, articulated between the upper lug seat 101 and the lower lug seat 601, are in a relaxed state. The hinge centers of the upper lug seat 101 and the hydraulic cylinder 4, the hydraulic cylinder 4 and the transition rod 10, and the transition rod 10 and the lower lug seat 601 form a variable triangle. The distances between these two points—the hinge centers of the upper lug seat 101 and the hydraulic cylinder 4, and the transition rod 10 and the lower lug seat 601—can freely change as the sowing unit 8 floats up and down with the ground. This ensures that the sowing unit 8 floats freely with ground conditions, thereby ensuring consistent sowing depth. The articulated arrangement between the upper lug seat 101, the lower lug seat 601, the hydraulic cylinder 4, and the transition rod 10, along with the provision of the circular chain 13, allows the sowing unit 8 to swing horizontally and float vertically during sowing operations, while also being fixedly connected to the main machine 9 during road transport, thus meeting the requirements of both operating modes.

Claims

1. A hooking device for a self-propelled potato planter, wherein during use, a vertically mounted traction frame (2) at the rear of a tractor (9) and a sowing unit frame (6) mounted at the front of a sowing unit (8) are connected via the hooking device, characterized in that: The hooking device comprises a transition frame (3), a hydraulic cylinder (4), a connecting rod (5), and a transition rod (10). The transition frame (3) is a vertically mounted rectangular frame formed by connecting an upper rod, a left rod, a lower rod, and a right rod end to end. The sowing unit frame (6) comprises a crossbar, two right-angle brackets at both ends of the crossbar and vertically connected to the crossbar, each right-angle bracket comprises a vertical rod and a horizontal rod vertical to the vertical rod, the connecting rod (5) is four rods of the same structure, the two connection points on the left rod and the two connection points on the vertical rod of the left right-angle bracket are respectively rotatably connected to the two ends of the two connecting rods (5) to form a parallelogram structure, and the two connection points on the right rod are respectively rotatably connected to the two ends of the two connecting rods (5) to form a parallelogram structure. The two connection points on the vertical rod of the right right-angle bracket are respectively rotatably connected to the two ends of the two connecting rods (5) to form a parallelogram structure. The middle part of the upper rod is connected to the upper part of the traction frame (2) through an upper pin (11), and the middle part of the lower rod is connected to the lower part of the traction frame (2) through a lower pin (12). The middle part of the upper rod is equipped with an upper ear seat (101), and the middle part of the cross rod is equipped with a lower ear seat (601). The lower ear seat (601) is rotatably connected to one end of the transition rod (10), and the other end of the transition rod (10) is rotatably connected to one end of the hydraulic cylinder (4). The other end of the hydraulic cylinder (4) is pin-connected to the upper ear seat (101).

2. The attachment device for a self-propelled potato planter according to claim 1, characterized in that: The hitch device further comprises an anti-sway rod (501), wherein the upper connecting rod (5) of the two connecting rods (5) connected to the right rod and the upper connecting rod (5) of the two connecting rods (5) connected to the left rod are connected via two parallel anti-sway rods (501).

3. The attachment device for a self-propelled potato planter according to claim 1, characterized in that: The hooking device further comprises two circular chain links (13), wherein the middle portion of the upper connecting link (5) of the two connecting links (5) connected to the right rod is connected to one end of a circular chain link (13) via a first connector (16), and the other end of the circular chain link (13) is connected to the horizontal rod of the right right-angle bracket via a second connector (7); and the middle portion of the upper connecting link (5) of the two connecting links (5) connected to the left rod is connected to one end of the other circular chain link (13) via a first connector (16), and the other end of the circular chain link (13) is connected to the horizontal rod of the left right-angle bracket via a second connector (7).

4. The attachment device for a self-propelled potato planter according to claim 3, characterized in that: The first connecting head (16) is a round-link chain tensioner, the second connecting head (7) is a fastening bolt, and the round-link chain tensioner includes an adjusting bolt (14) and an adjusting nut (15).

5. The attachment device for a self-propelled potato planter according to claim 1, characterized in that: The traction frame (2) comprises an upper traction frame connecting frame and a lower traction frame connecting frame, both ends of which are fixed together. The upper traction frame connecting frame comprises two upper connecting plates (201) and a vertical connecting rod (204). The two upper connecting plates (201) are symmetrically fixed at both ends of the vertical connecting rod (204). The lower traction frame connecting frame comprises two lower connecting plates (202) and a vertical connecting plate (203). The two lower connecting plates (202) are symmetrically fixed at both ends of the vertical connecting plate (203). An upper connecting plate (201) below the upper traction frame connecting frame is fixed to the traction frame. A lower connecting plate (202) on the upper connecting frame of the traction frame is fixed together, the front of the two upper connecting plates (201) and the two lower connecting plates (202) are provided with pin holes, the rear of the two upper connecting plates (201) and the two lower connecting plates (202) are provided with bolt holes for fixing with the tail of the traction machine (9), the upper connecting plate (201) on the upper connecting frame of the traction frame is connected to the upper rod through the upper pin shaft (11), the upper connecting plate (201) on the lower connecting frame of the traction frame and the two lower connecting plates (202) on the lower connecting frame of the traction frame are connected to the lower rod through the lower pin shaft (12).

6. The attachment device for a self-propelled potato planter according to claim 1, characterized in that: The traction machine (9) is connected to the traction frame (2) via the traction frame inclined bracket (1).

Images