Rotary cultivator capable of adjusting tillage depth of blade

Abstract

The invention discloses a rotary cultivator capable of adjusting the tillage depth of a blade, and relates to the technical field of rotary cultivators. Comprising a rotary tillage device, a rolling piece and a fork arm, one end of the fork arm is installed at the rolling piece, the other end of the fork arm is connected with a rotary cultivator traction device through a connecting piece, the rotary tillage device is installed between the rolling piece and the fork arm, the fork arm rotates with one end of the rolling piece as a fulcrum, and the fork arm rotates to control the height of the rotary tillage device so as to adjust the tillage depth of the rotary tillage device. The rolling piece and the traction equipment are connected through the fork arm, the rotary cultivator body is installed between the traction equipment and the rolling piece, the fork arm bears direct loads, one end of the fork arm is installed on the rolling piece, a pressing roller in the rolling piece makes direct contact with the ground, and the other end of the fork arm is connected with the traction equipment through the V-shaped arm and the towing hook. The height of the rotary cultivator body can be adjusted only by adjusting the angle of the fork arm, and the fork arm is hung on the traction equipment, so that the rotary cultivator is prevented from being completely lifted by a traction equipment bracket.

Description

Technical Field

[0001] The invention relates to the technical field of rotary tillers, in particular to a rotary tiller with adjustable blade tilling depth. Background Art

[0002] At present, the common connection methods between rotary tillers and rotary tillers' traction equipment include three-point suspension, trailer, traction, semi-trailer, etc. Among them, large tractors are mostly connected to rotary tillers with three-point suspension brackets.

[0003] A Chinese patent application numbered 201320323010.X discloses a three-point suspension rotary tiller, which realizes a combination of different working widths and different side transmission modes through a serialized combination design, so that the rotary tiller has different working widths and transmission modes.

[0004] However, the connection parts of the three-point suspension need to withstand large tension and torque. If the connection is not firm, such as looseness and wear between the trailer ball and the connecting rod, the rotary tiller may fall off during tillage, causing safety accidents. In addition, since the rotary tiller is heavy, it will increase the tractor's traction load, have a certain impact on the tractor's power performance and fuel economy, and may increase the tractor's fuel consumption and shorten its service life. Therefore, we propose a new rotary tiller with adjustable blade tillage depth. Summary of the invention

[0005] The object of the present invention is to provide a rotary tiller with adjustable blade tillage depth to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a rotary tiller with adjustable blade tillage depth, comprising: Rotary tillage equipment, rollers and forks; One end of the fork arm is installed on the rolling piece, and the other end of the fork arm is installed and connected with the traction equipment of the rotary tiller through a connecting piece; The rotary tillage device is installed between the rolling member and the fork arm. The fork arm rotates with one end of the rolling member as a fulcrum. The rotation of the fork arm controls the height of the rotary tillage device to adjust the tillage depth of the rotary tillage device.

[0007] Further regarding this solution, the rotary tilling equipment includes a top cover, a knife roller is installed at the bottom of the top cover, and the rotary tilling equipment also includes an adjustment mechanism, which is installed on the top of the top cover. The adjustment mechanism adjusts the angle of the rotary tilling machine body on the center line of the travel route of the rotary tilling machine traction equipment by controlling the top cover.

[0008] Further regarding this scheme, the rolling part includes a top cover two, a pressure roller is rotatably installed between the two side edges of the top cover two, a fixed block is fixed to the top of the top cover two, one end of the fork arm connected to the rolling part is rotatably installed at the fixed block, and the axis of rotation of the fork arm at the fixed block is perpendicular to the axis of the pressure roller.

[0009] Further regarding this scheme, the adjustment mechanism includes a hanging plate, the rotary tiller body is installed below the hanging plate, and the fork arm extends two arms from one end connected to the fixed block to one end of the rotary tiller traction device, and the two arms are symmetrically installed on both sides of the center line of the hanging plate, and the distance between the two arms and the center line of the hanging plate is greater than cm.

[0010] Furthermore, regarding this solution, a V-shaped arm is fixed to one end of the two arms of the fork arm away from the fixed block, the V-shaped arm and the fork arm are connected by a plurality of reinforcing rods, the two arms are also connected by reinforcing rods, and the side of the V-shaped arm away from the fork arm is connected to the traction equipment of the rotary tiller through a tow hook.

[0011] Furthermore, regarding this solution, a driving assembly is installed in the middle of the hanging plate, and connecting arm assemblies are also installed on both sides of the center line of the hanging plate. The movement of the connecting arm assembly is controlled by the driving assembly, and the connecting arm assembly controls the rotary tiller body to adjust the angle.

[0012] Further to this solution, the connecting arm assembly includes sliding rails installed at the bottom of both sides of the hanging plate, and a threaded rod is rotatably installed between the two ends of the sliding rails. A sliding block is screwed on the threaded rod to translate on the sliding rails.

[0013] Further regarding this scheme, the top cover 1 is installed with an articulated block 2 at a position away from the center line of the hanging plate, a hanging arm is rotatably installed at the articulated block 2, one end of the hanging arm away from the articulated block 2 is rotatably installed at the slider, an articulated block 1 is installed at the bottom of the hanging plate away from the center line of the hanging plate, an adjusting arm is rotatably installed at one articulated block, and the other end of the adjusting arm is rotatably installed near the middle of the hanging arm.

[0014] Further regarding this solution, the drive assembly includes a conical disk rotatably mounted at the central bottom of the hanging plate, two threaded rods are fixed with conical teeth at one end close to the conical disk, the conical teeth are meshingly connected with the conical disk, and a drive source for driving the conical disk to rotate is installed at the center of the top of the hanging plate, and the rotational output power of the conical disk is controlled by braking of the drive source.

[0015] Further to this solution, the sliders on both sides move synchronously in the same direction driven by the threaded rod, and the connecting arm assembly controls one end of the top cover to approach the hanging plate, and the connecting arm assembly controls the other end of the top cover to move away from the hanging plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The rotary tiller with adjustable blade tillage depth is connected to the rolling part and the traction equipment through a fork arm, and the rotary tiller body is installed between the traction equipment and the rolling part. The fork arm bears direct load, one end of which is installed on the rolling part, and the pressure roller in the rolling part is in direct contact with the ground, and the other end is connected to the traction equipment through a V-shaped arm and a towing hook. In this case, the height of the rotary tiller body can be adjusted only by adjusting the angle of the fork arm, and the fork arm is towed on the traction equipment, thereby avoiding the traction equipment bracket from completely lifting the rotary tiller, reducing the bracket load, and increasing the service life of the rotary tiller.

[0017] At the same time, the adjusting mechanism can realize that one end of the rotary tiller body is close to the hanging plate and the other end is away from the hanging plate, which means that the rotary tiller body can be rotated or the angle can be adjusted through the adjusting mechanism to adapt to more complex farming conditions, such as different terrains, soil textures, etc., and the adjusting mechanism can affect the distance between the hanging plate and the top cover, so as to accurately control the angle of the rotary tiller body and further achieve precise control of the tillage depth. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure from a side perspective of the present invention; Figure 3 It is a schematic diagram of the self-adaptive adjustment structure of the pressure roller of the present invention; Figure 4 It is a schematic diagram of the structure of the regulating mechanism of the present invention.

[0019] In the figure: 1. rotary tiller body; 101. top cover 1; 102. drive assembly; 103. knife roller; 2. pressure roller; 3. top cover 2; 4. V-shaped arm; 401. reinforcement rod; 5. towing hook; 6. adjustment mechanism; 601. hanging plate; 602. driving source; 603. conical disk; 604. conical teeth; 605. slide rail; 606. slider; 607. threaded rod; 608. hanging arm; 609. adjustment arm; 610. hinge block 1; 611. hinge block 2; 7. fork arm; 8. fixing block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figure 1As shown, the present invention provides a technical solution: a rotary tiller with adjustable blade tillage depth, comprising a rotary tiller body 1, a rolling member, an adjusting mechanism 6 and a fork arm 7, wherein the rotary tiller body 1 is located between a pressure roller 2 and a traction device of the rotary tiller, the soil surface is harrowed by the rotary tiller body 1 and compacted by the pressure roller 2, the rotary tiller body 1 comprises a top cover 101, the adjusting mechanism 6 is installed on the top of the top cover 101, the rolling member comprises a pressure roller 2 and a top cover 2 3, the pressure roller 2 is rotatably installed between the two side plates of the top cover 2 3, wherein the fork arm 7 is installed and connected to the adjusting mechanism 6, one end of the fork arm 7 away from the traction device of the rotary tiller is installed on the top of the top cover 2 3, the other end of the fork arm 7 is installed with a V-shaped arm 4, a towing hook 5 is provided on the V-shaped arm 4, and the towing hook 5 is connected to the traction device of the rotary tiller.

[0022] Specifically, the prior art uses a rotary tiller traction device including a tractor, etc., to connect and install the rotary tiller with a bracket at the rear end of the rotary tiller traction device, and adjusts the rotary tillage depth of the rotary tiller by adjusting the angle of the bracket. The rotary tiller is completely installed on the bracket, and the height of the rotary tiller is adjusted only by the power output of the bracket. Basically, it can be said that the rotary tiller is suspended on the bracket, so the bracket is required to have sufficient power to lift the rotary tiller. Once the bracket breaks or the power is interrupted, the rotary tiller will fall to the ground.

[0023] like Figure 2 As shown, in this embodiment, the rotary tiller body 1 is connected to the rolling part and the rotary tiller traction device through the fork arm 7, that is to say, the rotary tiller body 1 is installed between the rotary tiller traction device and the rolling part, and the fork arm 7 bears direct load. One end of the fork arm 7 is directly installed on the rolling part, and the pressure roller 2 in the rolling part is directly in contact with the ground, and the other end is connected to the rotary tiller traction device through the V-arm 4 and the towing hook 5. The pressure roller 2 is always in contact with the ground, and the end of the fork arm 7 connected to the rolling part is supported. In this case, the height of the rotary tiller body 1 can be adjusted by adjusting the angle of the fork arm 7. The fork arm 7 is towed on the rotary tiller traction device, and the pressure roller 2 is always in contact with the ground, and rotates around the axis of the pressure roller 2 as the fulcrum. Compared with the adjustment method of the traditional rotary tiller, it is more labor-saving, and it can also avoid the need for the support of the rotary tiller traction equipment to completely lift the rotary tiller in the prior art, thereby reducing the support load and increasing the service life of the rotary tiller.

[0024] like Figure 2 and Figure 3As shown, in this embodiment, a fixing block 8 is fixedly installed on the top of the top cover 23, and one end of the fork arm 7 connected to the rolling member is rotatably installed on the fixing block 8. Therefore, although one end of the fork arm 7 is connected to the traction device of the rotary tiller, the end connected to the rolling member allows the rolling member to be adaptively adjusted. In short, the pressure roller 2 is towed and rolled by the traction device of the rotary tiller, and is guided by the power of the traction device of the rotary tiller during movement. If the tilled ground is uneven or the agricultural land in areas such as Yunnan, Guizhou and Sichuan may be on a slope, the pressure roller 2 can also achieve adaptive rotation, thereby improving the usable scenarios of the pressure roller, and the axis of rotation of the fork arm 7 at the fixing block 8 is always perpendicular to the axis of the pressure roller 2. The adjusting mechanism 6 includes a hanging plate 601, and the rotary tiller body 1 is installed below the hanging plate 601, and the hanging plate 601 is fixed on the fork arm 7. In other words, the fork arm 7 is adjusted The section hanging plate 601 can realize the adjustment of the rotary tiller body 1. In this embodiment, the hanging plate 601 must be able to be stably and highly mounted on the fork arm 7 to ensure the stability of the rotary tiller during the tillage process. The fork arm 7 extends two arms from one end connected to the fixed block 8 to one end of the rotary tiller traction device. The two arms are symmetrically installed on the top of the hanging plate 601 with the center line of the hanging plate 601. In this embodiment, the distance between any arm and the center line of the hanging plate 601 needs to be greater than 50 cm to avoid excessive load on any side of the center line of the hanging plate 601 when the force is uneven. The two arm ends of the fork arm 7 are fixed to one side of the V-shaped arm 4, and the fork arm 7 and the V-shaped arm 4 are connected by a number of reinforcing rods 401, and the two arms are also connected by reinforcing rods 401, which can improve the load capacity of the fork arm 7 and the connection strength between the V-shaped arm 4.

[0025] like Figure 4As shown, a driving assembly is installed in the middle of the hanging plate 601, and connecting arm assemblies are also installed on both sides of the dividing line of the hanging plate 601. The movement of the connecting arm assembly is controlled by the driving assembly to adjust the angle of the rotary tiller body 1. The connecting arm assembly includes a slide rail 605 installed at the bottom of both sides of the hanging plate 601, and a threaded rod 607 is rotatably installed between the two ends of the slide rail 605. A slider 606 is screwed on the threaded rod 607 and translates on the slide rail 605. Among them, a hinge block 611 is installed at the top cover 101 away from the dividing line of the hanging plate 601, and a hanging arm 608 is rotatably installed at the hinge block 611. One end of the hanging arm 608 away from the hinge block 611 is rotatably installed on the slider 606 At the bottom of the hanging plate 601 away from the midline of the hanging plate 601, a hinge block 610 is installed, and an adjusting arm 609 is rotatably installed at the hinge block 610. The other end of the adjusting arm 609 is rotatably installed near the middle of the hanging arm 608. The driving component includes a conical disk 603 rotatably installed at the central bottom of the hanging plate 601, and two threaded rods 607 are fixed with conical teeth 604 at one end close to the conical disk 603. The conical teeth 604 are meshed and connected with the conical disk 603. A driving source 602 for driving the conical disk 603 to rotate is installed at the top center of the hanging plate 601. The driving source 602 brakes and controls the rotation of the conical disk 603 to output power. This structure is used to control the rotary tiller body The angle is adjusted on both sides of the midline of the traveling direction of the rotary tiller traction device. The conical teeth 604 on both sides are driven to rotate by the rotation of the conical disk 603 to drive the threaded rod 607. The threaded rod 607 drives the slider 606 to move and drags the suspension arm 608 to move during the driving process. The suspension arm 608 is connected to the suspension plate 601 through the adjustment arm 609. The suspension arm 608 affects the distance between the suspension plate 601 and the top cover 101 through the adjustment arm 609. For example, the thread on one side can control the slider 606 to move toward one end of the conical disk 603 during the rotation process. During the movement, the angle between the suspension arm 608 and the top cover 101 becomes smaller. The suspension arm 608 will synchronously drag the adjustment arm 609 to move during the movement, and the distance between the adjustment arm 609 and the suspension arm 608 will become smaller. That is to say, when the suspension plate 601 is stationary, the angle between the suspension arm 608 and the top cover 101 becomes smaller, and the distance between the adjustment arm 609 and the suspension arm 608 becomes smaller, which means that the side where the top cover 101 is connected to the above-mentioned suspension arm 608 is closer to the suspension plate 601. Similarly, the threaded rod 607 on the other side can drive the slider 606 to move toward the end away from the conical disk 603 under the drive of the conical teeth 604, that is to say, the top cover 101 on this side will be away from the suspension plate 601 under the control of the suspension arm 608.

[0026] That is to say, with the support of the above structure, the adjusting mechanism 6 can realize that one end of the rotary tiller body 1 is close to the hanging plate 601 and the other end is away from the hanging plate 601, which means that the rotary tiller body 1 can be rotated or the angle can be adjusted through the adjusting mechanism 6 to adapt to more complex farming conditions.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A rotary tiller with adjustable blade tillage depth, characterized in that: include: Rotary tillage equipment, rolling elements and fork arms (7); One end of the fork arm (7) is mounted on the rolling member, and the other end of the fork arm (7) is mounted and connected to the traction device of the rotary tiller through a connecting piece; The rotary tillage device is installed between the rolling member and the fork arm (7); the fork arm (7) rotates with one end of the rolling member as a fulcrum; the fork arm (7) rotates to control the height of the rotary tillage device so as to adjust the tillage depth of the rotary tillage device.

2. A rotary tiller with adjustable blade tillage depth according to claim 1, characterized in that: The rotary tillage device comprises a top cover (101), a knife roller (103) being mounted at the bottom of the top cover (101), and the rotary tillage device further comprises an adjustment mechanism (6), the adjustment mechanism (6) being mounted on the top of the top cover (101), and the adjustment mechanism (6) adjusting the angle of the rotary tillage machine body (1) on the midline of the travel route of the rotary tillage machine traction device by controlling the top cover (101).

3. A rotary tiller with adjustable blade tillage depth according to claim 1, characterized in that: The rolling piece comprises a second top cover (3), a pressure roller (2) is rotatably mounted between two side edges of the second top cover (3), a fixing block (8) is fixed to the top end of the second top cover (3), one end of the fork arm (7) connected to the rolling piece is rotatably mounted on the fixing block (8), and the axis of rotation of the fork arm (7) at the fixing block (8) is perpendicular to the axis of the pressure roller (2).

4. A rotary tiller with adjustable blade tillage depth according to claim 2, characterized in that: The adjustment mechanism (6) comprises a hanging plate (601), the rotary tiller body (1) is mounted below the hanging plate (601), the fork arm (7) extends two support arms from one end connected to the fixing block (8) toward one end of the rotary tiller traction device, the two support arms are symmetrically mounted on both sides of the center line of the hanging plate (601), and the distance between the two support arms and the center line of the hanging plate (601) is greater than 50 cm.

5. A rotary tiller with adjustable blade tillage depth according to claim 1, characterized in that: A V-shaped arm (4) is fixed to one end of the two arms of the fork arm (7) away from the fixed block (8); the V-shaped arm (4) and the fork arm (7) are connected via a plurality of reinforcing rods (401); the two arms are also connected via the reinforcing rods (401); and the side of the V-shaped arm (4) away from the fork arm (7) is connected to the traction device of the rotary tiller via a towing hook (5).

6. A rotary tiller with adjustable blade tillage depth according to claim 4, characterized in that: A driving assembly is installed in the middle of the hanging plate (601), and connecting arm assemblies are also installed on both sides of the center line of the hanging plate (601). The driving assembly controls the movement of the connecting arm assembly, and the connecting arm assembly controls the rotary tiller body (1) to adjust the angle.

7. A rotary tiller with adjustable blade tillage depth according to claim 6, characterized in that: The connecting arm assembly comprises slide rails (605) installed at the bottom of both sides of the hanging plate (601), a threaded rod (607) is rotatably installed between the two ends of the slide rails (605), and a slider (606) is screwed on the threaded rod (607) to translate on the slide rails (605).

8. A rotary tiller with adjustable blade tillage depth according to claim 2, characterized in that: A hinge block 2 (611) is installed at a position of the top cover 1 (101) away from the center line of the hanging plate (601), a hanging arm (608) is rotatably installed at the hinge block 2 (611), one end of the hanging arm (608) away from the hinge block 2 (611) is rotatably installed at the slider (606), a hinge block 1 (610) is installed at the bottom of the hanging plate (601) away from the center line of the hanging plate (601), an adjusting arm (609) is rotatably installed at the hinge block 1 (610), and the other end of the adjusting arm (609) is rotatably installed near the middle of the hanging arm (608).

9. A rotary tiller with adjustable blade tillage depth according to claim 6, characterized in that: The driving assembly comprises a conical disk (603) rotatably mounted at the central bottom of a hanging plate (601); conical teeth (604) are fixed to one end of two threaded rods (607) close to the conical disk (603); the conical teeth (604) are meshedly connected with the conical disk (603); a driving source (602) for driving the conical disk (603) to rotate is mounted at the central top of the hanging plate (601); the driving source (602) is used to control the rotation of the conical disk 603 to output power.

10. A rotary tiller with adjustable blade tillage depth according to claim 6, characterized in that: The sliders (606) on both sides are driven by the threaded rod (607) to move synchronously in the same direction, and the connecting arm assembly controls one end of the top cover (101) to approach the hanging plate (601), and the connecting arm assembly controls the other end of the top cover (101) to move away from the hanging plate (601).

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