Land leveling device for seeding machine and seeding machine comprising same

Abstract

The utility model discloses a land leveling device for a seeding machine and the seeding machine with the land leveling device, and belongs to the technical field of seeding mechanical equipment. The suspension bracket comprises a suspension support part and a rotary connection support part which are connected with each other; the upper end of the suspension connecting mechanism is movably connected to the suspension supporting part; the rolling rack is connected to the suspension connecting mechanism; one end of the swing connecting mechanism is rotationally connected to the extending end of the rotary connecting supporting part, and the other end of the swing connecting mechanism is rotationally connected to the end, facing the rotary connecting supporting part, of the suspension frame; the elastic pressure applying mechanism is mounted between the rolling frame and the suspension supporting part, the movement of the suspension frame is limited by the suspension connecting mechanism, the swing connecting mechanism and the elastic pressure applying mechanism, and the rolling frame can adapt to the land extruded by the rolling frame and swing under the constraint of the suspension connecting mechanism, the swing connecting mechanism and the elastic pressure applying mechanism. The land leveling device disclosed by the utility model is beneficial to improving the adaptability to the raised degree of the land.

Description

Technical Field

[0001] The utility model relates to the technical field of sowing machinery and equipment, in particular to a land leveling device for a sowing machine and a sowing machine containing the same. Background Art

[0002] Wheat is an important grain. However, when cultivating wheat using a tiller, the surface of the plowed land becomes uneven, which affects wheat growth and even reduces grain yield. In the prior art, a land leveler is installed on the frame of a wheat planter to level the land after plowing. The land leveler is then dragged forward by a tractor to level the land as it passes through.

[0003] However, existing land levelers are usually mounted on a frame and moved forward under the traction of a tractor. When the land leveler encounters raised ground, it cannot adjust its height to the raised ground level. When the land leveler passes through land with excessively raised ground level, a large resistance is formed between the land leveler and the raised ground level, affecting the sowing efficiency of the wheat planter and even causing the tractor to malfunction. Furthermore, other sowing machines used for leveling land also have similar problems. Therefore, there is an urgent need for a land leveling device that can improve its adaptability to the raised ground level. Summary of the Invention

[0004] The purpose of the present invention is to overcome at least one of the above-mentioned shortcomings of the prior art and to provide a land leveling device for a seed drill that is conducive to improving the adaptability to the degree of land convexity; in addition, a seed drill is also provided.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] According to one aspect of the present application, a land leveling device for a seeding machine is provided, which is connected to the seeding machine and includes:

[0007] A suspension bracket, the suspension bracket comprising a suspension support portion and a rotation connection support portion, the rotation connection support portion being connected to one end of the suspension support portion and extending downward, the rotation connection support portion extending downward to form an extension end;

[0008] a suspension connection mechanism, wherein the upper end of the suspension connection mechanism is movably connected to the suspension support portion, and the lower end of the suspension connection mechanism extends downward to form a connection end;

[0009] A rolling frame connected to the connecting end of the suspension connecting mechanism;

[0010] a swing connection mechanism, one end of which is rotatably connected to the extended end of the rotation connection support portion, the other end of which is rotatably connected to the end of the suspension bracket facing the rotation connection support portion, the swing connection mechanism being located on one side of the suspension connection mechanism;

[0011] An elastic pressure mechanism is installed between the rolling frame and the suspension support portion. The elastic pressure mechanism is used to apply elastic pressure to the suspension frame. The movement of the suspension frame is limited by the suspension connection mechanism, the swing connection mechanism and the elastic pressure mechanism, and the rolling frame can adapt to the land squeezed by it and swing in the height direction under the joint restraint of the suspension connection mechanism, the swing connection mechanism and the elastic pressure mechanism.

[0012] The beneficial effects of the present invention are as follows: the rolling frame in this embodiment is connected to the connecting end of the suspension connection mechanism, the upper end of the suspension connection mechanism is movably connected to the suspension support part, and in addition, the rolling frame is rotatably connected to the extended end of the rotation connection support part through the swing connection mechanism, and an elastic pressure mechanism is also installed between the rolling frame and the suspension support part; the land leveling device of the present application is installed on the frame of the seed drill, and during the seed drill sowing operation, the land leveling device moves forward under the traction action of the traction device of the seed drill, and when the rolling frame encounters a raised land in the process of moving forward, the rolling frame rolls the raised land, and when the raised degree of the land When the leveling capacity of the rolling frame is within the range of the leveling capacity of the rolling frame, the land squeezed by the rolling frame is crushed by the rolling frame and leveled; when the convexity of the land is too large, the rolling frame adapts to the land squeezed by it and swings upward in the height direction under the joint restriction of the suspension connection mechanism, the swing connection mechanism and the elastic pressure mechanism, and the height of the rolling frame is appropriately raised to adjust the leveling thickness of the rolling frame for the land with too large a convexity, so that the leveling capacity of the rolling frame for leveling the land with too large a convexity is suitable, which is conducive to avoiding excessive resistance of the land with too large a convexity to the rolling frame and affecting the normal progress of the sowing operation, and improving the adaptability to the convexity of the land.

[0013] In addition, based on the above technical solution, the present invention can also be improved as follows and can also have the following additional technical features.

[0014] According to one embodiment of the present application, the rolling frame is rotatably connected to the connection end of the suspension connection mechanism, and the rotation direction of the rolling frame is consistent with the rotation direction of the swing connection mechanism.

[0015] The rolling frame in this embodiment is rotatably connected to the connecting end of the suspension connection mechanism, and the rotation direction of the rolling frame is consistent with the rotation direction of the swing connection mechanism. When the rolling frame is squeezed against the soil, it is convenient for the rolling frame to adapt to the soil squeezed against it and to swing in the height direction under the joint restriction of the suspension connection mechanism, the swing connection mechanism and the elastic pressure mechanism; in addition, it is convenient for the rolling frame to rotate relative to the suspension connection mechanism, and the rolling frame moves forward under the traction of the traction device of the seed drill. When the bulge of the soil is too large, it is convenient for the front end of the rolling frame to tilt upward relative to the rear end of the rolling frame, thereby helping the rolling frame to adapt to the soil squeezed against it and to be lifted.

[0016] According to one embodiment of the present application, a plurality of vertical movable mounting through holes are provided at intervals on the suspension support portion, and the suspension connection mechanism includes:

[0017] There are multiple connecting rods, the upper end of each connecting rod passes upward through the vertical movable installation through hole, and the suspension bracket is connected to the lower ends of the multiple connecting rods;

[0018] A plurality of limit blocks are provided corresponding to the plurality of connecting rods, each of the limit blocks is connected to one end of the connecting rod passing upward through the vertical movable mounting through hole, and the limit block can stop at the upper side of the vertical movable mounting through hole and limit the space for the connecting rod to move downward.

[0019] The suspension support portion in this embodiment is provided with a plurality of vertical movable mounting through holes at intervals, which facilitates the movable mounting of the connecting rod in the vertical movable mounting through holes. In addition, by connecting a limiting block to one end of the connecting rod passing upward through the vertical movable mounting through hole, the space for the connecting rod to move downward can be limited, thereby limiting the minimum height position of the downward movement of the suspension bracket connected to the lower ends of the plurality of connecting rods, thereby limiting the ability of the suspension bracket to level the raised land.

[0020] According to one embodiment of the present application, the elastic pressure mechanism includes:

[0021] A plurality of springs are provided corresponding to the plurality of connecting rods, each of the springs is sleeved on the outer periphery of the connecting rod and compressed between the lower side of the suspension support part and the upper side of the rolling frame, the upper end of the spring is pressed against the lower side of the suspension support part, and the lower end of the spring is pressed against the upper side of the rolling frame.

[0022] The elastic pressure mechanism in this embodiment includes springs, each spring is arranged on the outer periphery of the connecting rod and is compressed between the lower side of the suspension support part and the upper side of the rolling frame. The spring has an elastic pressure effect on the rolling frame based on compression, which is beneficial for the rolling frame to adapt to the land squeezed by it and swing in the height direction under the joint restriction of the suspension connection mechanism, the swing connection mechanism and the elastic pressure mechanism.

[0023] According to one embodiment of the present application, the vertical movable mounting through hole is in a strip shape, and the vertical movable mounting through hole extends horizontally along the rotation direction of the swing connection mechanism. The upper end of the connecting rod passes upward through the vertical movable mounting through hole and can move in the vertical movable mounting through hole.

[0024] The vertical movable mounting through hole in this embodiment is a strip-shaped through hole. When the rolling frame adapts to the land squeezed by it and swings in the height direction under the joint restriction of the suspension connection mechanism, the swing connection mechanism and the elastic pressure mechanism, the connecting rod can move in the strip-shaped through hole, which is beneficial to increase the flexibility and diversity of the rolling frame's activities and improve the leveling effect of the rolling frame on the land squeezed by it.

[0025] According to one embodiment of the present application, the connection position of the movable connection between the suspension connection mechanism and the suspension support portion can be adjusted in the height direction, and the distance between the rolling frame and the suspension support portion in the height direction can be adjusted.

[0026] The connection position of the suspension connection mechanism and the suspension support part in this embodiment can be adjusted in the height direction, which is convenient for adjusting the height position of the suspension connection mechanism connected to the suspension support part, adjusting the distance between the rolling frame and the suspension support part, and adjusting the lowest height position of the downward movement of the suspension frame, thereby adjusting the suspension frame's ability to level the raised land, which is conducive to meeting the needs of different levels of land leveling.

[0027] According to one embodiment of the present application, the suspension support portion includes:

[0028] a first suspension support beam, one end of the first suspension support beam being used for connecting to the planter, and the other end of the first suspension support beam extending to form an extended end 1;

[0029] a second suspension support beam, disposed opposite the first suspension support beam, one end of the second suspension support beam being used for connecting to the planter, and the other end of the second suspension support beam extending to form an extended end second;

[0030] The rotation connection support portion includes:

[0031] a first vertical connecting beam, wherein an upper end of the first vertical connecting beam is connected to an extended end of the first suspension support beam, and a lower end of the first vertical connecting beam extends downward;

[0032] a second vertical connecting beam, disposed opposite the first vertical connecting beam, wherein the upper end of the second vertical connecting beam is connected to the second extended end of the second suspension support beam, and the lower end of the second vertical connecting beam extends downward;

[0033] The swing connection mechanism comprises:

[0034] a first swing connecting arm, one end of the first swing connecting arm being rotatably connected to the lower end of the first vertical connecting beam, and the other end of the first swing connecting arm being rotatably connected to the rolling frame;

[0035] A second swing connecting arm, one end of the second swing connecting arm is rotatably connected to the lower end of the second vertical connecting beam, and the other end of the second swing connecting arm is rotatably connected to the rolling frame.

[0036] The rolling frame in this embodiment is rotatably connected to one end of the first swing connecting arm and the second swing connecting arm, and the rolling frame is connected to the connecting end of the suspension connecting mechanism, so that the rolling frame is suspended between the first swing connecting arm, the second swing connecting arm and the suspension connecting mechanism, so that the rolling frame can adapt to the land squeezed by it and swing in the height direction under the joint restriction of the suspension connecting mechanism, the first swing connecting arm, the second swing connecting arm and the elastic pressure mechanism.

[0037] According to one embodiment of the present application, the rolling frame includes:

[0038] The land flattens the cylinder;

[0039] A front protrusion 1, wherein the rear end of the front protrusion 1 is connected to one end of the soil flattening cylinder in the length direction, the front end of the front protrusion 1 protrudes forward, and the front protrusion 1 is connected to the connection end of the suspension connection mechanism;

[0040] A second front protrusion is arranged opposite to the first front protrusion, the rear end of the second front protrusion is connected to the other end of the soil flattening cylinder in the length direction, the front end of the second front protrusion protrudes forward, and the second front protrusion is connected to the connection end of the suspension connection mechanism;

[0041] The middle leveling protrusion has a rear end connected to the soil leveling cylinder, a front end protruding forward, and the middle leveling protrusion is located between the front protrusion one and the front protrusion two.

[0042] In this embodiment, the land leveling device of the present application is installed on the frame of the seed drill. During the seeding operation of the seed drill, when the front protrusion one, the front protrusion two and the middle leveling protrusion encounter raised land during the forward movement, the front protrusion one, the front protrusion two and the middle leveling protrusion first roll the raised land, and then the land flattening cylinder rolls the raised land, which is beneficial to improve the leveling effect of the rolling frame on the raised land.

[0043] According to one embodiment of the present application, when the rolling frame is squeezed against the soil, the rolling frame adapts to the soil squeezed against it and swings in the height direction under the joint restriction of the suspension connection mechanism, the swing connection mechanism and the elastic pressure mechanism, and the height difference of the rolling frame that can swing in the height direction is 20mm-60mm.

[0044] The height difference of the height in which the rolling frame can swing in the present embodiment is 20mm-60mm, which facilitates adjusting the suspension frame's ability to level the raised land by reasonably setting the height difference of the height in which the rolling frame can swing, thereby meeting the requirements for different levels of land leveling.

[0045] According to another aspect of the present application, a seed drill is provided, comprising:

[0046] traction device;

[0047] a frame assembly mounted on the rear end of the traction device;

[0048] a sowing assembly, mounted on the frame assembly;

[0049] In the above-mentioned land leveling device for a seed drill, the suspension frame is installed at the front end of the frame assembly and is located at the rear end of the traction device.

[0050] The seed drill of this embodiment includes the above-mentioned land leveling device for seed drill, the suspension frame is installed at the front end of the frame assembly and is located at the rear end of the traction device. During the seed drill sowing operation, the land leveling device moves forward under the traction action of the traction device of the seed drill, and when the rolling frame encounters a raised ground during the forward movement, the rolling frame rolls the raised ground. When the raised degree of the ground is within the leveling capacity range of the rolling frame, the ground squeezed by the rolling frame is rolled and leveled by the rolling frame; when the raised degree of the ground is too large, the rolling frame adapts to the ground squeezed by it and swings upward in the height direction under the joint restriction of the suspension connection mechanism, the swing connection mechanism and the elastic pressure mechanism, and the height of the rolling frame is appropriately raised to adjust the leveling thickness of the rolling frame for the ground with too large a raised degree, so that the leveling capacity of the rolling frame for leveling the ground with too large a raised degree is suitable, which is beneficial to avoid that the resistance of the ground with too large a raised degree to the rolling frame is too large and affects the normal progress of the seeding operation, and improves the adaptability to the raised degree of the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the technical solutions in the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0052] Figure 1 This is a schematic structural diagram of a land leveling device for a seed drill according to an embodiment of the present utility model;

[0053] Figure 2 for Figure 2 Front view after straightening;

[0054] Figure 3 for Figure 2 A top view of

[0055] Figure 4 for Figure 1 An enlarged view of the middle I region;

[0056] Figure 5 This is a structural schematic diagram of a land leveling device for a seed drill according to an embodiment of the present utility model installed on a frame assembly.

[0057] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0058] 1. First suspension support beam, 2. Second suspension support beam, 3. First vertical connecting beam, 4. Second vertical connecting beam, 5. Connecting rod, 6. First swing connecting arm, 7. Second swing connecting arm, 8. Rolling frame, 9. Frame assembly, 10. Mounting plate 1, 20. Mounting plate 2, 21. Vertical movable mounting through hole, 30. Rotary support pin 1, 40. Rotary support pin 2, 50. Rotary connector, 51. Lock nut 1, 52. Washer 1, 53. Lock nut 2, 54. Washer 2, 55. Rotating support pin three, 56. Spring, 70. Rotating connecting seat two, 80. Land flattening cylinder, 81. Front protrusion one, 82. Front protrusion two, 83. Middle leveling protrusion, 90. Installing support beam, 91. Parking support foot, 92. Pressing wheel, 101. Installing through hole one, 201. Installing through hole two, 811. Connecting protrusion one, 812. Rotating support seat one, 821. Connecting protrusion two, 822. Rotating support seat two, 831. Connecting plate, 832. Avoiding groove. DETAILED DESCRIPTION

[0059] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0060] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0061] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0062] In one aspect of the present application, a land leveling device for a seeding machine is provided, which is connected to the seeding machine, such as Figures 1 to 5 Shown, including:

[0063] The suspension frame includes a suspension support portion and a rotation connection support portion, the rotation connection support portion is connected to one end of the suspension support portion and extends downward, and the rotation connection support portion extends downward to form an extension end;

[0064] A suspension connection mechanism, wherein the upper end of the suspension connection mechanism is movably connected to the suspension support portion, and the lower end of the suspension connection mechanism extends downward to form a connection end;

[0065] The rolling frame 8 is connected to the connecting end of the suspension connecting mechanism;

[0066] A swing connection mechanism, one end of the swing connection mechanism is rotatably connected to the extended end of the rotation connection support portion, the other end of the swing connection mechanism is rotatably connected to the end of the suspension frame facing the rotation connection support portion, and the swing connection mechanism is located on one side of the suspension connection mechanism;

[0067] The elastic pressure mechanism is installed between the rolling frame 8 and the suspension support part. The elastic pressure mechanism is used to apply elastic pressure to the suspension frame. The movement of the suspension frame is limited by the suspension connection mechanism, the swing connection mechanism and the elastic pressure mechanism. The rolling frame 8 can adapt to the land squeezed by it and swing in the height direction under the joint constraint of the suspension connection mechanism, the swing connection mechanism and the elastic pressure mechanism.

[0068] In this embodiment, if Figures 1 to 5As shown, the rolling frame 8 in this embodiment is connected to the connecting end of the suspension connecting mechanism, and the upper end of the suspension connecting mechanism is movably connected to the suspension support part. In addition, the rolling frame 8 is also rotatably connected to the extended end of the rotation connecting support part through a swing connection mechanism, and an elastic pressure mechanism is also installed between the rolling frame 8 and the suspension support part. The land leveling device of the present application is installed on the frame of the seed drill. During the seed drill sowing operation, the land leveling device moves forward under the traction action of the traction device of the seed drill. When the rolling frame 8 encounters a raised land in the process of moving forward, the rolling frame 8 rolls the raised land. When the raised degree of the land is within the range of the rolling frame 8 When the leveling capacity is within the range, the land squeezed by the rolling frame 8 is crushed and leveled by the rolling frame 8; when the convexity of the land is too large, the rolling frame 8 adapts to the land squeezed by it and swings upward in the height direction under the joint restriction of the suspension connection mechanism, the swing connection mechanism and the elastic pressure mechanism, and the height of the rolling frame 8 is appropriately raised to adjust the leveling thickness of the land with too large a convexity by the rolling frame 8, so that the leveling capacity of the rolling frame 8 for leveling the land with too large a convexity is suitable, which is conducive to avoiding the excessive resistance of the land with too large a convexity to the rolling frame 8 and affecting the normal progress of the sowing operation, and improving the adaptability to the convexity of the land.

[0069] One embodiment of the present application, such as Figure 1 As shown, the rolling frame 8 is rotatably connected to the connection end of the suspension connection mechanism, and the rotation direction of the rolling frame 8 is consistent with the rotation direction of the swing connection mechanism.

[0070] One embodiment of the present application, such as Figure 1 As shown, the rolling frame 8 in this embodiment is rotatably connected to the connecting end of the suspension connection mechanism, and the rotation direction of the rolling frame 8 is consistent with the rotation direction of the swing connection mechanism. When the rolling frame 8 is squeezed with the soil, it is convenient for the rolling frame 8 to adapt to the soil squeezed with it and swing in the height direction under the joint restriction of the suspension connection mechanism, the swing connection mechanism and the elastic pressure mechanism; in addition, it is convenient for the rolling frame 8 to rotate relative to the suspension connection mechanism, and the rolling frame 8 moves forward under the traction of the traction device of the seed drill. When the bulge of the soil is too large, it is beneficial for the front end of the rolling frame 8 to tilt upward relative to the rear end of the rolling frame 8, thereby facilitating the rolling frame 8 to adapt to the soil squeezed with it and be lifted.

[0071] One embodiment of the present application, such as Figure 1 、 Figure 3 and Figure 4 As shown, a plurality of vertical movable mounting holes 21 are provided on the suspension support portion at intervals, and the suspension connection mechanism includes:

[0072] There are multiple connecting rods 5, the upper end of each connecting rod 5 passes upward through the vertical movable mounting through hole 21, and the suspension bracket is connected to the lower ends of the multiple connecting rods 5;

[0073] There are multiple limit blocks corresponding to multiple connecting rods 5, and each limit block is connected to one end of the connecting rod 5 that passes upward through the vertical movable mounting hole 21. The limit block can stop at the upper side of the vertical movable mounting hole 21 and limit the space for the connecting rod 5 to move downward.

[0074] One embodiment of the present application, such as Figure 1 、 Figure 3 and Figure 4 As shown, the suspension support portion in this embodiment is provided with a plurality of vertical movable mounting through holes 21 at intervals, which facilitates the movable mounting of the connecting rod 5 in the vertical movable mounting through hole 21; in addition, by connecting a limiting block to one end of the connecting rod 5 passing upward through the vertical movable mounting through hole 21, the space for the connecting rod 5 to move downward can be limited, thereby limiting the minimum height position of the downward movement of the suspension bracket connected to the lower ends of the plurality of connecting rods 5, thereby limiting the suspension bracket's ability to level the raised land.

[0075] In this embodiment, if Figure 1 、 Figure 3 and Figure 4 As shown, the lower end of the connecting rod 5 is connected to a rotary connector 50. The connecting rod 5 is specifically a screw rod, and the outer side of the connecting rod 5 is provided with an external thread. The limit block in this embodiment is specifically a locking nut 51. In addition, in order to improve the locking stability of the locking nut 51, a washer 52 is installed on the lower side of the locking nut 51. The washer 52 is located on the outer periphery of the connecting rod 5. Furthermore, the suspension connection mechanism in this embodiment can also be configured as other structures to facilitate the suspension connection of the rolling frame 8. Furthermore, in this embodiment, there are four connecting rods 5, and the number of connecting rods 5 can also be set to six as needed.

[0076] One embodiment of the present application, such as Figure 1 、 Figure 2 and Figure 4 As shown, the elastic pressure mechanism includes:

[0077] There are multiple springs 56, one-to-one corresponding to multiple connecting rods 5. Each spring 56 is sleeved on the outer periphery of the connecting rod 5 and compressed between the lower side of the suspension support part and the upper side of the rolling frame 8. The upper end of the spring 56 is squeezed against the lower side of the suspension support part, and the lower end of the spring 56 is squeezed against the upper side of the rolling frame 8.

[0078] One embodiment of the present application, such as Figures 1 to 4As shown, the elastic pressure mechanism in this embodiment includes a spring 56. Each spring 56 is sleeved on the outer periphery of the connecting rod 5 and compressed between the lower side of the suspension support part and the upper side of the rolling frame 8. The spring 56 has an elastic pressure effect on the rolling frame 8 based on compression, which is beneficial for the rolling frame 8 to adapt to the land squeezed by it and swing in the height direction under the joint restriction of the suspension connection mechanism, the swing connection mechanism and the elastic pressure mechanism.

[0079] In this embodiment, if Figure 1 、 Figure 2 and Figure 4 As shown, to facilitate adjustment of the height of the spring 56 installed on the connecting rod 5, a second locking nut 53 is threadedly connected to the lower portion of the connecting rod 5. A second washer 54 is also sleeved on the lower portion of the connecting rod 5. The second washer 54 is located on the outer periphery of the connecting rod 5 and abuts against the upper side of the second locking nut 53. The lower end of the spring 56 abuts against the upper side of the second washer 54, and the upper end of the spring 56 abuts against the lower side of the first vertical connecting beam 3 or the second vertical connecting beam 4. Furthermore, in this embodiment, four connecting rods 5 are provided, and correspondingly, four springs 56 are provided.

[0080] One embodiment of the present application, such as Figure 4 As shown, the vertical movable mounting through hole 21 is in a strip shape, and the vertical movable mounting through hole 21 extends horizontally along the rotation direction of the swing connection mechanism. The upper end of the connecting rod 5 passes upward through the vertical movable mounting through hole 21 and can move in the vertical movable mounting through hole 21.

[0081] One embodiment of the present application, such as Figure 4 As shown, the vertical movable mounting through hole 21 in this embodiment is a strip through hole. When the rolling frame 8 adapts to the land squeezed by it and swings in the height direction under the joint restriction of the suspension connection mechanism, the swing connection mechanism and the elastic pressure mechanism, the connecting rod 5 can move in the strip through hole, which is beneficial to increase the flexibility and diversity of the movement of the rolling frame 8 and improve the leveling effect of the rolling frame 8 on the land squeezed by it.

[0082] Further, such as Figure 4 As shown, in this embodiment, two vertical movable mounting through holes 21 are provided on the first suspension support beam 1 along the length direction of the first suspension support beam 1, and the two vertical movable mounting through holes 21 pass through the first suspension support beam 1 in the height direction, and the upper end of the spring 56 in this embodiment stops at the lower side of the first vertical connecting beam 3; further, in this embodiment, two vertical movable mounting through holes 21 are provided on the second suspension support beam 2 along the length direction of the second suspension support beam 2, and the two vertical movable mounting through holes 21 pass through the second suspension support beam 2 in the height direction, and the upper end of the spring 56 in this embodiment stops at the lower side of the second vertical connecting beam 4.

[0083] One embodiment of the present application, such as Figures 1 to 4 As shown, the connection position of the movably connected suspension connection mechanism and the suspension support portion can be adjusted in the height direction, and the distance between the rolling frame 8 and the suspension support portion in the height direction can be adjusted.

[0084] One embodiment of the present application, such as Figures 1 to 4 As shown, the connection position of the suspension connection mechanism and the suspension support part in this embodiment can be adjusted in the height direction, which is convenient for adjusting the height position of the suspension connection mechanism connected to the suspension support part, realizing the adjustment of the distance between the rolling frame 8 and the suspension support part, realizing the adjustment of the lowest height position of the downward movement of the suspension frame, and then adjusting the suspension frame's ability to level the raised land, which is beneficial to meet the needs of different leveling degrees of the land.

[0085] One embodiment of the present application, such as Figures 1 to 4 As shown, the suspension support portion includes:

[0086] A first suspension support beam 1, one end of the first suspension support beam 1 is used to connect to the planter, and the other end of the first suspension support beam 1 is extended to form an extended end 1;

[0087] A second suspension support beam 2 is arranged opposite to the first suspension support beam 1, one end of the second suspension support beam 2 is used to connect with the planter, and the other end of the second suspension support beam 2 is extended to form an extended end 2;

[0088] The rotation connection support portion includes:

[0089] a first vertical connecting beam 3, wherein the upper end of the first vertical connecting beam 3 is connected to the extended end of the first suspension support beam 1, and the lower end of the first vertical connecting beam 3 extends downward;

[0090] The second vertical connecting beam 4 is arranged opposite to the first vertical connecting beam 3, the upper end of the second vertical connecting beam 4 is connected to the second extended end of the second suspension support beam 2, and the lower end of the second vertical connecting beam 4 extends downward;

[0091] The swing connection mechanism includes:

[0092] A first swing connecting arm 6, one end of the first swing connecting arm 6 is rotatably connected to the lower end of the first vertical connecting beam 3, and the other end of the first swing connecting arm 6 is rotatably connected to the rolling frame 8;

[0093] The second swing connecting arm 7, one end of the second swing connecting arm 7 is rotatably connected to the lower end of the second vertical connecting beam 4, and the other end of the second swing connecting arm 7 is rotatably connected to the rolling frame 8.

[0094] One embodiment of the present application, such as Figures 1 to 4As shown, the rolling frame 8 in this embodiment is rotatably connected to one end of the first swing connecting arm 6 and the second swing connecting arm 7, and the rolling frame 8 is connected to the connecting end of the suspension connecting mechanism, so that the rolling frame 8 is suspended between the first swing connecting arm 6, the second swing connecting arm 7 and the suspension connecting mechanism, so that the rolling frame 8 can adapt to the land squeezed by it and swing in the height direction under the joint restriction of the suspension connecting mechanism, the first swing connecting arm 6, the second swing connecting arm 7 and the elastic pressure mechanism.

[0095] In this embodiment, if Figures 1 to 4 As shown, the rear end of the first vertical connecting beam 3 is connected to a mounting plate 10, and two mounting through holes 101 are respectively provided on the left and right sides of the mounting plate 10; the rear end of the second vertical connecting beam 4 is connected to a mounting plate 20, and two mounting through holes 201 are respectively provided on the left and right sides of the mounting plate 20; the first vertical connecting beam 3 is horizontally fixedly mounted on the frame assembly by using a U-shaped clamp through the two mounting through holes 101 located on the same side, and the second vertical connecting beam 4 is horizontally fixedly mounted on the frame assembly by using a U-shaped clamp through the two mounting through holes 201 located on the same side; further, the first vertical connecting beam 3 and the second vertical connecting beam 4 in this embodiment can also be mounted on the frame assembly by other fixing methods. Further, the first vertical connecting beam 3 and the second vertical connecting beam 4 in this embodiment are both hollow rectangular structures, and the first vertical connecting beam 3 and the second vertical connecting beam 4 can also be set to other structures. It should be noted that the U-shaped clamp is not shown in the figure in this embodiment.

[0096] In this embodiment, if Figure 1 and Figure 2 As shown, the first vertical connecting beam 3 is welded to the lower side of the front end of the first vertical connecting beam 3, and the lower end of the first vertical connecting beam 3 is provided with a rotation avoidance groove 1; the front end of the first swing connecting arm 6 is rotatably installed in the rotation avoidance groove 1 of the first vertical connecting beam 3 through a rotation support pin 1 30, and the rotation support pin 1 30 horizontally passes through the front end of the first swing connecting arm 6; the rear end of the first swing connecting arm 6 is connected to a rotation connecting seat 1, and the rotation connecting seat 1 is rotatably installed on the rolling frame 8 through a rotation support pin 3 55, and the rotation support pin 3 55 passes through the rotation connecting seat 1.

[0097] In this embodiment, if Figure 1 and Figure 2As shown, the second vertical connecting beam 4 is welded to the lower side of the front end of the second vertical connecting beam 4, and the lower end of the second vertical connecting beam 4 is provided with a second rotation avoidance groove; the front end of the second swing connecting arm 7 is rotatably mounted in the second rotation avoidance groove of the second vertical connecting beam 4 via a second rotation support pin 40, and the second rotation support pin 40 horizontally passes through the front end of the second swing connecting arm 7; the rear end of the second swing connecting arm 7 is connected to a second rotation connecting seat 70, and the second rotation connecting seat 70 is rotatably mounted on the rolling frame 8 via a third rotation support pin 55, and the third rotation support pin 55 passes through the second rotation connecting seat 70. Furthermore, the structure of the second rotation connecting seat 70 is U-shaped, and the structure of the first rotation connecting seat is the same as that of the second rotation connecting seat 70.

[0098] Further, such as Figure 1 and Figure 2 As shown, the first vertical connecting beam 3 and the second vertical connecting beam 4 in this embodiment are both hollow rectangular structures, and the first vertical connecting beam 3 and the second vertical connecting beam 4 can also be set to other structures; in addition, the first swing connecting arm 6 and the second vertical connecting beam 4 in this embodiment have the same structure, and the first swing connecting arm 6 and the second vertical connecting beam 4 can also have multiple structures.

[0099] One embodiment of the present application, such as Figures 1 to 4 As shown, the rolling frame 8 includes:

[0100] Land flattening cylinder 80;

[0101] A front protrusion 81, the rear end of which is connected to one end of the soil flattening cylinder 80 in the longitudinal direction, the front end of which protrudes forward, and the front protrusion 81 is connected to the connecting end of the suspension connecting mechanism;

[0102] The second front protrusion 82 is arranged opposite to the first front protrusion 81. The rear end of the second front protrusion 82 is connected to the other end of the soil flattening cylinder 80 in the length direction. The front end of the second front protrusion 82 protrudes forward and is connected to the connection end of the suspension connection mechanism.

[0103] The middle leveling protrusion 83 has a rear end connected to the soil leveling cylinder 80 , a front end protruding forward, and the middle leveling protrusion 83 is located between the front protrusion 1 81 and the front protrusion 2 82 .

[0104] In this embodiment, if Figures 1 to 4As shown, the land leveling device of the present application is installed on the frame of the seed drill. During the seeding operation of the seed drill, when the front protrusion 1 81, the front protrusion 2 82 and the middle leveling protrusion 83 encounter raised land in the process of moving forward, the front protrusion 1 81, the front protrusion 2 82 and the middle leveling protrusion 83 first roll the raised land, and then the land leveling cylinder 80 rolls the raised land, which is beneficial to improve the leveling effect of the rolling frame 8 on the raised land.

[0105] In this embodiment, if Figure 1 As shown, the rear end of the front protrusion 81 is connected to the left end of the soil flattening cylinder 80 in the length direction, and the front protrusion 81 includes a first straight side and a first oblique side connected to each other, the front ends of the first straight side and the first oblique side are connected, and the rear ends of the first straight side and the first oblique side are connected to the soil flattening cylinder 80; the front end of the front protrusion 81 is connected with a connecting protrusion 811, and the first straight side and the connecting protrusion 811 are respectively connected with a rotating support seat 812, and the rotating support seat 812 is a U-shaped structure, and a rotating mounting groove 1 is formed in the rotating support seat 812; the rotating connecting seat 1 is rotatably connected to the rotating support seat 812 connected to the connecting protrusion 811 through a rotating support pin 3 55; the rotating connecting head 50 rotatably connected to the rotating connecting seat 1 is located in the rotating mounting groove 1, and the rotating support pin 3 55 passes through the rotating connecting head 50, the rotating support seat 812 connected to the connecting protrusion 811 and the rotating connecting seat 1.

[0106] In this embodiment, if Figure 1 As shown, the rear end of the front protrusion 82 is connected to the right end of the land flattening cylinder 80 in the length direction, and the front protrusion 82 includes a second straight side and a second oblique side connected to each other, and the front ends of the second straight side and the second oblique side are connected, and the rear ends of the second straight side and the second oblique side are connected to the land flattening cylinder 80; the front end of the front protrusion 82 is connected with a connecting protrusion 821, and the second straight side and the connecting protrusion 821 are respectively connected with a rotating support seat 822, and the rotating support seat 822 is a U-shaped structure, and a rotating mounting groove 2 is formed in the rotating support seat 822; the rotating connecting seat 2 70 is rotatably connected to the rotating support seat 2 822 connected to the connecting protrusion 2 821 through a rotating support pin 3 55; the rotating connecting head 50 rotatably connected to the rotating connecting seat 2 70 is located in the rotating mounting groove 2, and the rotating support pin 3 55 passes through the rotating connecting head 50, the rotating support seat 2 822 connected to the connecting protrusion 2 821 and the rotating connecting seat 2 70.

[0107] In this embodiment, if Figure 1As shown, the middle leveling protrusion 83 in this embodiment is connected to the middle portion of the soil leveling cylinder 80 in the longitudinal direction. The middle leveling protrusion 83 includes a third oblique side, a fourth oblique side, and a middle straight side. The middle straight side is connected to the front ends of the third and fourth oblique sides. The third oblique side is inclined toward the left end of the rear side and is connected to the soil leveling cylinder 80. The fourth oblique side is inclined toward the right end of the rear side and is connected to the soil leveling cylinder 80. The fourth oblique side is arranged parallel to the soil leveling cylinder 80. Two avoidance grooves 832 are provided on the lower side of the fourth oblique side. The avoidance grooves 832 are used to pass through partially raised soil. The middle leveling protrusion 83 also includes two connecting plates 831. The two connecting plates 831 are respectively connected to the middle straight side and the upper and lower sides of the soil leveling cylinder 80. The two connecting plates 831 are arranged opposite each other in the height direction.

[0108] Further, such as Figure 1 and Figure 2 As shown, the land flattening cylinder 80 in this embodiment is a hollow cylindrical structure, and the lower sides of the front protrusion 1 81, the front protrusion 2 82 and the middle leveling protrusion 83 in this embodiment are flush with the lower side of the land flattening cylinder 80; in addition, the rolling frame 8 in this embodiment can also be set to other structures.

[0109] In one embodiment of the present application, when the rolling frame 8 is pressed against the soil, the rolling frame 8 adapts to the soil pressed against it and swings in the height direction under the joint restriction of the suspension connection mechanism, the swing connection mechanism and the elastic pressure mechanism, and the height difference of the rolling frame 8 that can swing in the height direction is 20mm-60mm.

[0110] In this embodiment, the height difference of the rolling frame 8 that can swing in the height direction is 20mm-60mm. By reasonably setting the height difference of the rolling frame 8 that can swing in the height direction, it is convenient to adjust the suspension frame's ability to level the raised land, which is conducive to meeting the needs of different levels of land leveling. Further, for example, when the height difference of the rolling frame 8 that can swing in the height direction is set to 30mm, the height difference between the rolling frame 8 at the lowest position and the highest position of the swing is 30mm. During the sowing operation of the seed drill, the rolling frame 8 can swing within the range of the height difference of 30mm.

[0111] In another aspect of the present application, a seed drill is provided, such as Figure 5 Shown, including:

[0112] traction device;

[0113] A frame assembly mounted on the rear end of the traction device;

[0114] A sowing assembly is mounted on the frame assembly;

[0115] In the above-mentioned land leveling device for a seed drill, the suspension frame is installed at the front end of the frame assembly and is located at the rear end of the traction device.

[0116] In this embodiment, if Figure 5 As shown, the seeder includes the above-mentioned land leveling device for the seeder, the suspension frame is installed at the front end of the frame assembly and at the rear end of the traction device. In the process of the seeder performing the sowing operation, the land leveling device moves forward under the traction action of the traction device of the seeder, and when the rolling frame 8 encounters a raised ground in the process of moving forward, the rolling frame 8 rolls the raised ground. When the degree of protrusion of the ground is within the leveling capacity range of the rolling frame 8, the ground squeezed by the rolling frame 8 is rolled and leveled by the rolling frame 8; when the degree of protrusion of the ground is too large, the rolling frame 8 adapts to the ground squeezed by it and swings upward in the height direction under the joint restriction of the suspension connection mechanism, the swing connection mechanism and the elastic pressure mechanism, and appropriately raises the height of the rolling frame 8 to adjust the leveling thickness of the ground with too large a protrusion by the rolling frame 8, so that the leveling capacity of the rolling frame 8 for leveling the ground with too large a protrusion is suitable, which is beneficial to avoid that the resistance of the ground with too large a protrusion to the rolling frame 8 is too large, which affects the normal progress of the sowing operation and improves the adaptability to the protrusion of the ground.

[0117] In this embodiment, if Figure 5 As shown, the front end of the frame assembly in this embodiment is connected to a mounting support beam 90, which is a rectangular structure; the mounting plate 1 10 and the mounting plate 2 20 are respectively fixedly mounted on the mounting support beam 90 by using U-shaped clamps; the U-shaped clamps are not shown in the figure in this embodiment; in addition, the first suspension support beam 1 and the second suspension support beam 2 in this embodiment can also be fixedly connected to the frame assembly by other means.

[0118] Further, such as Figure 5 As shown, in this embodiment, in order to support the frame assembly when parked, four detachable parking support legs 91 are respectively installed at the front and rear ends of the frame assembly. When the frame assembly needs to be parked, the four parking support legs 91 are installed to support the frame assembly; and when the seeder is sowing, the four parking support legs 91 are removed, and the frame assembly is supported by the seeding wheel and other supporting structures.

[0119] Further, such as Figure 5 As shown, in this embodiment, in order to compact the leveled land, a compacting device is installed on the front lower side of the frame assembly. The compacting device includes a plurality of compacting wheels 92. During the sowing operation of the seeder, the compacting wheels 92 roll and compact the leveled land.

[0120] Furthermore, the structure of the frame assembly in this embodiment can be multiple; further, the way of installing the sowing assembly on the frame assembly can also be multiple. The sowing assembly and the traction device are not illustrated in this embodiment. The structure and working principle of the sowing assembly and the traction device can refer to the existing technology and will not be repeated here.

[0121] Furthermore, the seeder in this embodiment is specifically a wheat seeder, and the seeder can also be used as a sowing device for corn or other crops; in addition, other devices or mechanisms included in the wheat seeder can also refer to existing seeders and will not be described in detail here.

[0122] In addition, in addition to the technical solutions disclosed in this embodiment, the spring 56, sowing assembly, traction device, other parts of the seeder and their working principles in the utility model can refer to the conventional technical solutions in this technical field, and these conventional technical solutions are not the focus of the utility model, and the utility model will not be described in detail here.

[0123] In this utility model, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean fixed, removable, or integral; "connected" can mean directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0124] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present application.

[0125] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0126] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A land leveling device for a seed drill, used to connect with the seed drill, characterized in that: include: A suspension bracket, the suspension bracket comprising a suspension support portion and a rotation connection support portion, the rotation connection support portion being connected to one end of the suspension support portion and extending downward, the rotation connection support portion extending downward to form an extension end; a suspension connection mechanism, wherein the upper end of the suspension connection mechanism is movably connected to the suspension support portion, and the lower end of the suspension connection mechanism extends downward to form a connection end; A rolling frame connected to the connecting end of the suspension connecting mechanism; a swing connection mechanism, one end of which is rotatably connected to the extended end of the rotation connection support portion, the other end of which is rotatably connected to the end of the suspension bracket facing the rotation connection support portion, the swing connection mechanism being located on one side of the suspension connection mechanism; An elastic pressure mechanism is installed between the rolling frame and the suspension support portion. The elastic pressure mechanism is used to apply elastic pressure to the suspension frame. The movement of the suspension frame is limited by the suspension connection mechanism, the swing connection mechanism and the elastic pressure mechanism, and the rolling frame can adapt to the land squeezed by it and swing in the height direction under the joint restraint of the suspension connection mechanism, the swing connection mechanism and the elastic pressure mechanism.

2. The land leveling device for a seed drill according to claim 1, characterized in that: The rolling frame is rotatably connected to the connection end of the suspension connection mechanism, and the rotation direction of the rolling frame is consistent with the rotation direction of the swing connection mechanism.

3. The land leveling device for a seed drill according to claim 1, characterized in that: The suspension support portion is provided with a plurality of vertical movable mounting through holes at intervals, and the suspension connection mechanism includes: There are multiple connecting rods, the upper end of each connecting rod passes upward through the vertical movable installation through hole, and the suspension bracket is connected to the lower ends of the multiple connecting rods; A plurality of limit blocks are provided corresponding to the plurality of connecting rods, each of the limit blocks is connected to one end of the connecting rod passing upward through the vertical movable mounting through hole, and the limit block can stop at the upper side of the vertical movable mounting through hole and limit the space for the connecting rod to move downward.

4. The land leveling device for a seed drill according to claim 3, characterized in that: The elastic pressure mechanism comprises: A plurality of springs are provided corresponding to the plurality of connecting rods, each of the springs is sleeved on the outer periphery of the connecting rod and compressed between the lower side of the suspension support part and the upper side of the rolling frame, the upper end of the spring is pressed against the lower side of the suspension support part, and the lower end of the spring is pressed against the upper side of the rolling frame.

5. The land leveling device for a seed drill according to claim 3, characterized in that: The vertical movable mounting through hole is in a strip shape and extends horizontally along the rotation direction of the swing connection mechanism. The upper end of the connecting rod passes upward through the vertical movable mounting through hole and can move in the vertical movable mounting through hole.

6. The land leveling device for a seed drill according to any one of claims 1 to 5, characterized in that: The connection position of the movably connected suspension connection mechanism and the suspension support portion can be adjusted in the height direction, and the distance between the rolling frame and the suspension support portion in the height direction can be adjusted.

7. The land leveling device for a seed drill according to any one of claims 1 to 5, characterized in that: The suspension support portion comprises: a first suspension support beam, one end of the first suspension support beam being used for connecting to the planter, and the other end of the first suspension support beam extending to form an extended end 1; a second suspension support beam, disposed opposite the first suspension support beam, one end of the second suspension support beam being used for connecting to the planter, and the other end of the second suspension support beam extending to form an extended end second; The rotation connection support portion includes: a first vertical connecting beam, wherein an upper end of the first vertical connecting beam is connected to an extended end of the first suspension support beam, and a lower end of the first vertical connecting beam extends downward; a second vertical connecting beam, disposed opposite the first vertical connecting beam, wherein the upper end of the second vertical connecting beam is connected to the second extended end of the second suspension support beam, and the lower end of the second vertical connecting beam extends downward; The swing connection mechanism comprises: a first swing connecting arm, one end of the first swing connecting arm being rotatably connected to the lower end of the first vertical connecting beam, and the other end of the first swing connecting arm being rotatably connected to the rolling frame; A second swing connecting arm, one end of the second swing connecting arm is rotatably connected to the lower end of the second vertical connecting beam, and the other end of the second swing connecting arm is rotatably connected to the rolling frame.

8. The land leveling device for a seed drill according to any one of claims 1 to 5, characterized in that: The rolling frame comprises: The land flattens the cylinder; A front protrusion 1, wherein the rear end of the front protrusion 1 is connected to one end of the soil flattening cylinder in the length direction, the front end of the front protrusion 1 protrudes forward, and the front protrusion 1 is connected to the connection end of the suspension connection mechanism; A second front protrusion is arranged opposite to the first front protrusion, the rear end of the second front protrusion is connected to the other end of the soil flattening cylinder in the length direction, the front end of the second front protrusion protrudes forward, and the second front protrusion is connected to the connection end of the suspension connection mechanism; The middle leveling protrusion has a rear end connected to the soil leveling cylinder, a front end protruding forward, and the middle leveling protrusion is located between the front protrusion one and the front protrusion two.

9. The land leveling device for a seed drill according to any one of claims 1 to 5, characterized in that: When the rolling frame is pressed against the soil, the rolling frame adapts to the soil pressed against it and swings in the height direction under the joint restriction of the suspension connection mechanism, the swing connection mechanism and the elastic pressure mechanism, and the height difference of the rolling frame that can swing in the height direction is 20mm-60mm.

10. A seed drill, characterized in that: include: traction device; a frame assembly mounted on the rear end of the traction device; a sowing assembly, mounted on the frame assembly; In the land leveling device for a seed drill according to any one of claims 1 to 9, the suspension bracket is installed at the front end of the frame assembly and is located at the rear end of the traction device.

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