Self-leveling rotary cultivator

Abstract

The invention discloses a self-leveling rotary cultivator, and belongs to the technical field of rotary cultivators, the self-leveling rotary cultivator comprises a rack, a suspension bracket and a horizontal sensor, the rack is provided with a gravity center adjusting mechanism, the gravity center adjusting mechanism comprises a sliding rod and a balancing weight, the balancing weight is connected with an oil pressure leveling mechanism through a support, and a pressurization ploughing mechanism is arranged in the rack. The pressurizing ploughing mechanism comprises two sleeves and threaded rods, a connecting sleeve is arranged at the lower end of each threaded rod, and the two connecting sleeves are jointly and rotationally connected with a rotary tillage cutter shaft. The angle and the depth of the rotary tillage cutter shaft are adjusted, so that the consistency of the tilling depth and the uniformity of the soil crushing degree are ensured, the later crop growth is facilitated, the phenomenon of unsmooth drainage of a field is avoided, the larger resistance borne by the unbalanced rotary tillage cutter shaft is reduced, the abrasion of the blade is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The invention mainly relates to the technical field of rotary tillers, and in particular to a self-leveling rotary tiller. Background Art

[0002] A rotary tiller is an agricultural tilling machine used in conjunction with a tractor. It is mainly used to complete tillage and harrowing operations. The rotary tiller can effectively break up the soil, making the surface flat after tillage. It is widely used in tillage operations in rice fields, vegetable fields and orchards. According to the configuration of the rotary tiller blade shaft, the rotary tiller is mainly divided into two types: horizontal axis type and vertical axis type. The horizontal axis rotary tiller is more widely used. Its blade shaft is placed horizontally and has a strong soil crushing ability. The rotary tiller uses the rotary tiller blade shaft as the working part and is driven by the tractor power output shaft to cultivate the soil. The functions of the rotary tiller include breaking the plow bottom layer, restoring the soil tillage layer structure, improving the soil's water storage and moisture retention capacity, eliminating some weeds, reducing pests and diseases, leveling the surface and improving the standards of agricultural mechanized operations.

[0003] During the operation of the rotary tiller, it is necessary to maintain a horizontal state. If it does not work in a horizontal state, it will lead to inconsistent tillage depths and uneven soil fragmentation, which will not only affect crop growth, but may also cause poor field drainage. When the rotary tiller is unbalanced, the blades may be subject to greater resistance, causing increased wear of the blades and shortening the service life of the rotary tiller. In the currently existing rotary tillers, for example, the technical structure of the application document with application number 202322525979.1 includes a top plate, a connecting column is fixedly connected to the middle part of the upper end surface of the top plate, the upper end of the connecting column is fixedly connected to a mounting seat, and a control interface is provided in the middle part of the upper end surface of the mounting seat The lower end surface of the lifting plate is fixedly connected to the lifting plate, and the lower end surface of the lifting plate is fixedly connected to the bearing. Although the structure is leveled by the hydraulic telescopic rod, when the rotary tiller encounters a large clod or pit, the entire frame will tilt, such as the top plate at the upper end of the hydraulic telescopic rod in the application, so it is difficult to level the rotary tiller shaft at this time, resulting in inconsistent tillage depth and uneven soil crushing degree. Summary of the invention

[0004] The technical solution of the present invention aims at the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technologies. Specifically, the present invention mainly provides a self-leveling rotary tiller to solve the problem raised in the above background technology that when the current rotary tiller encounters a large clod of soil or a pit, the entire frame will tilt, so that the structure used for leveling the rotary tiller shaft and the rotary tiller shaft will both tilt, and the rotary tiller shaft cannot be calibrated, resulting in the technical problem that the rotary tiller shaft cannot be leveled.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: A self-leveling rotary tiller comprises a frame, a suspension frame and a level sensor, wherein the suspension frame is mounted on the frame, the level sensor is located on the suspension frame, and the suspension frame is used to mount the frame on a tractor, a center of gravity adjustment mechanism is arranged on the frame, the center of gravity adjustment mechanism comprises a slide bar, a counterweight is slidably connected to the slide bar, the counterweight is connected to an oil pressure leveling mechanism via a bracket, a pressurized tillage mechanism is arranged in the frame, the pressurized tillage mechanism comprises two sleeves distributed in parallel, the upper end of the sleeve is rotatably connected to the upper side of the inner wall of the frame, each of the sleeves is threadedly connected to a threaded rod, the lower end of each of the threaded rods is provided with a connecting sleeve, and the two connecting sleeves are rotatably connected to a rotary tiller shaft together.

[0006] Preferably, the pressurized tillage mechanism also includes a motor, the motor is located on the inner wall of the frame, the output end of the motor is provided with a first gear, the first gear is meshedly connected with a second gear, and the second gear is sleeved on the corresponding outer wall of the sleeve.

[0007] Preferably, each of the sleeves is provided with a pulley, and the two pulleys are connected by a belt.

[0008] Preferably, the oil pressure leveling mechanism comprises sealing cylinders located on both sides of the outer wall of the frame, each of the sealing cylinders is movably connected to a lifting piston rod, and a pulley block is provided at the lower end of each lifting piston rod.

[0009] Preferably, the oil pressure leveling mechanism also includes a double-headed piston rod, and the two ends of the double-headed piston rod are respectively movably connected with a first oil chamber and a second oil chamber, and the interface positions of the first oil chamber and the second oil chamber are respectively provided with a first conduit for transmitting oil along a first direction and a second conduit for transmitting oil along a second direction, and the two conduits are connected to corresponding sealing tubes.

[0010] Preferably, both the first conduit and the second conduit are provided with positioning clamps, and the positioning clamps are installed in the frame by screws.

[0011] Preferably, two symmetrically distributed cylinders are arranged on the upper side of the outer wall of the frame, and a driving frame is arranged at the output end of each of the cylinders, and both driving frames are connected to the counterweight block.

[0012] Preferably, a reducer is provided at the middle position of the rotary tiller shaft.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention, through the set frame, suspension frame, level sensor, rotary tiller blade shaft, speed reducer, slide rod, counterweight block, cylinder and driving frame, realizes that when the pulley group of the rotary tiller passes through a larger soil block or pit causing the frame to tilt as a whole, the counterweight block will be pulled to the higher side of the frame with the cooperation of the cylinder, thereby increasing the weight of the higher side of the frame to prompt the higher side of the frame to move downward, so as to achieve the purpose of leveling the frame, so that the frame and the rotary tiller blade shaft are in a horizontal state, thereby ensuring the consistency of the tillage depth of the blade shaft, making the soil crushing degree more uniform, which is beneficial to promoting the growth of later crops, and preventing the field from having poor drainage, ensuring the quality of tillage, and also reducing the greater resistance borne by the unbalanced rotary tiller blade shaft, reducing the wear of the blade, extending the service life and reducing the cost. The present invention uses the horizontal sensor, sliding rod, counterweight, sealing cylinder, lifting piston rod and pulley block to realize that when the horizontal sensor detects that the frame is in a non-horizontal state, the double-headed piston rod, the first oil chamber, the second oil chamber, the first conduit and the second conduit can be used to draw out the oil in the sealing cylinder on the higher side of the frame, shorten the relative length between the sealing cylinder and the lifting piston rod, thereby achieving the purpose of lowering the raised side of the frame, and at the same time, oil is injected into the sealing cylinder on the lower side of the frame to increase the relative length between the sealing cylinder and the lifting piston rod on this side, thereby lifting the lower side of the frame, further ensuring that the frame is in a horizontal state, which is beneficial for the rotary tiller shaft to be in a horizontal state, and then moving down to turn the soil, effectively reducing the downtime adjustment time caused by machine imbalance, eliminating the need for manual operation by staff, saving time and effort, ensuring that the rotary tiller can cultivate more smoothly, and improving work efficiency. (3) The present invention provides driving force for the rotation of the two sleeves by means of the horizontal sensor, motor, first gear, second gear, pulley and belt. With the cooperation of the threaded rod and the connecting sleeve, the rotary tiller shaft that has been adjusted to a horizontal state can be stably moved downward, thereby better controlling the depth of soil turning by the rotary tiller shaft. This ensures that the rotary tiller can turn the soil to the same depth when encountering larger clods of soil or pits, and will not have a situation where one side is deeper and the other side is shallower, thereby ensuring that each acre of land provides the same growth environment for crops.

[0014] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a side schematic diagram of the rotary tiller of the present invention; Figure 2 It is a schematic plan view of the internal structure of the rotary tiller of the present invention; Figure 3 It is a plan view schematic diagram of the oil pressure leveling mechanism of the present invention; Figure 4 For the present invention Figure 2 A magnified schematic diagram of area A.

[0016] In the figure: 1. frame; 2. suspension frame; 3. level sensor; 4. center of gravity adjustment mechanism; 41. slide rod; 42. counterweight; 43. cylinder; 44. drive frame; 5. pressurized tillage mechanism; 51. sleeve; 52. pulley; 53. threaded rod; 54. connecting sleeve; 55. rotary tiller shaft; 56. reducer; 57. motor; 58. first gear; 59. second gear; 6. oil pressure leveling mechanism; 61. sealing cylinder; 62. lifting piston rod; 63. pulley block; 64. double-headed piston rod; 65. first oil chamber; 66. second oil chamber; 67. first conduit; 68. second conduit; 69. positioning snap ring. DETAILED DESCRIPTION

[0017] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0018] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field to which the present invention belongs. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0020] Example 1, please refer to the attached Figure 1-4As shown, a self-leveling rotary tiller includes a frame 1, a suspension frame 2 and a horizontal sensor 3, the suspension frame 2 is mounted on the frame 1, the horizontal sensor 3 is located on the suspension frame 2, and the suspension frame 2 is used to mount the frame 1 on a tractor, the frame 1 is provided with a center of gravity adjustment mechanism 4, the center of gravity adjustment mechanism 4 includes a slide bar 41, a counterweight block 42 is slidably connected to the slide bar 41, the counterweight block 42 is connected to an oil pressure leveling mechanism 6 through a bracket, a pressurized tillage mechanism 5 is arranged in the frame 1, the pressurized tillage mechanism 5 includes two parallel distributed sleeves 51, the upper end of the sleeve 51 is rotatably connected to the upper side of the inner wall of the frame 1, each of the sleeves 51 is threadedly connected to a threaded rod 53, the lower end of each of the threaded rods 53 is provided with a connecting sleeve 54, and the two connecting sleeves 54 are rotatably connected to a rotary tiller shaft 55.

[0021] Through the above structure, when the rotary tiller encounters a large clod or pit causing the frame 1 to tilt as a whole, the frame 1 can be leveled first, and then the angle and depth of the rotary tiller shaft 55 can be adjusted, thereby ensuring the consistency of the tillage depth and the uniformity of the soil crushing degree, which is conducive to promoting the growth of crops in the later stage and will not cause poor field drainage. The greater resistance due to the imbalance of the rotary tiller shaft 55 is reduced, the wear of the blade is reduced, the service life is extended, and the downtime adjustment time caused by the imbalance of the machine is reduced, so that the rotary tiller can cultivate more smoothly and the work efficiency is improved.

[0022] The specific operation is as follows. First, the frame 1 is installed on the rear of the tractor (existing equipment, not shown in the figure) through the suspension frame 2, and the output shaft of the tractor is connected to the input end of the reducer 56 to drive the rotary blade shaft 55 to rotate. When the tractor pulls the rotary blade shaft 55 and encounters a large soil block or pit causing the frame 1 to tilt as a whole, the horizontal sensor 3 detects that the frame 1 is unbalanced, and then the cylinder 43 is started to pull the counterweight block 42 to the higher side of the frame 1, increasing the weight of the higher side of the frame 1 to promote the downward movement of the higher side of the frame 1. At the same time, the counterweight block 42 drives the double-headed piston rod 64 to move through the bracket. Here, for example, one side of the second oil chamber 66 is higher, then the double-headed piston rod 64 moves to the second oil chamber 66 to squeeze the oil, and then The oil then enters the sealing cylinder 61 on the lower side of the frame 1 through the first conduit 67, increasing the relative length between the sealing cylinder 61 and the lifting piston rod 62 on this side, thereby raising the lower side of the frame 1. At the same time, negative pressure is formed in the first oil chamber 65, so that the oil in the sealing cylinder 61 on the higher side of the frame 1 flows back to the first oil chamber 65 through the second conduit 68, shortening the relative length between the sealing cylinder 61 and the lifting piston rod 62, thereby achieving the purpose of lowering the raised side of the frame 1 and causing the frame 1 to be in a horizontal state. Subsequently, the motor 57 is started, and the two sleeves 51 are driven to rotate synchronously through the cooperation of the first gear 58, the second gear 59, the pulley 52 and the belt, so that the threaded rod 53 drives the rotary tiller shaft 55 to move downward to turn the soil.

[0023] Example 2, please refer to the attached Figure 1 and 2 As shown, two symmetrically distributed cylinders 43 are provided on the upper side of the outer wall of the frame 1, and a driving frame 44 is provided at the output end of each of the cylinders 43. The two driving frames 44 are connected to the counterweight 42. Through the cylinder 43, a driving force is provided for the movement of the counterweight 42. A reducer 56 is provided at the middle position of the rotary tiller shaft 55. Through the reducer 56, the driving force provided by the tractor is connected, and the rotation speed of the rotary tiller shaft 55 can be adjusted.

[0024] Example 3, please refer to the attached Figure 3 and 4As shown, the pressurized tillage mechanism 5 also includes a motor 57, which is located on the inner wall of the frame 1. The output end of the motor 57 is provided with a first gear 58, and the first gear 58 is meshedly connected with a second gear 59. The second gear 59 is sleeved on the outer wall of the corresponding sleeve 51. The motor 57, the first gear 58 and the second gear 59 provide a driving force for the rotation of the sleeve 51. Each of the sleeves 51 is provided with a pulley 52, and the two pulleys 52 are connected by a belt. The mutual cooperation between the pulley 52 and the belt ensures that the two sleeves 51 rotate synchronously. The oil pressure leveling mechanism 6 includes sealing cylinders 61 located on both sides of the outer wall of the frame 1, and each of the sealing cylinders 61 is movably connected with a lifting piston rod 62, and the lower end of each lifting piston rod 62 is provided with a pulley group. 63. The height of both sides of the frame 1 can be adjusted by the cooperation between the lifting piston rod 62 and the sealing cylinder 61. The oil pressure leveling mechanism 6 also includes a double-headed piston rod 64. The two ends of the double-headed piston rod 64 are movably connected with a first oil chamber 65 and a second oil chamber 66 respectively. The interface positions of the first oil chamber 65 and the second oil chamber 66 are respectively provided with a first conduit 67 for transmitting oil in a first direction and a second conduit 68 for transmitting oil in a second direction. The two conduits are connected with the corresponding sealing cylinder 61. Through the first conduit 67 and the second conduit 68, oil is transmitted to or extracted from the corresponding sealing cylinder 61. The first conduit 67 and the second conduit 68 are both provided with positioning snap rings 69, and the positioning snap rings 69 are installed in the frame 1 by screws. The positioning snap rings 69 are used to position the conduits.

[0025] The above is an exemplary description of the present invention in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A self-leveling rotary tiller, comprising a frame (1), a suspension frame (2) and a level sensor (3), wherein the suspension frame (2) is mounted on the frame (1), the level sensor (3) is located on the suspension frame (2), and the suspension frame (2) is used to mount the frame (1) on a tractor, characterized in that The frame (1) is provided with a center of gravity adjustment mechanism (4), the center of gravity adjustment mechanism (4) comprising a slide bar (41), a counterweight block (42) being slidably connected to the slide bar (41), the counterweight block (42) being connected to an oil pressure leveling mechanism (6) via a bracket, a pressurized tillage mechanism (5) being provided in the frame (1), the pressurized tillage mechanism (5) comprising two sleeves (51) distributed in parallel, the upper end of the sleeve (51) being rotatably connected to the upper side of the inner wall of the frame (1), each of the sleeves (51) being threadedly connected to a threaded rod (53), the lower end of each of the threaded rods (53) being provided with a connecting sleeve (54), and the two connecting sleeves (54) being rotatably connected to a rotary tiller shaft (55) together.

2. A self-leveling rotary tiller according to claim 1, characterized in that: The pressurized tillage mechanism (5) further comprises a motor (57), the motor (57) being located on the inner wall of the frame (1), the output end of the motor (57) being provided with a first gear (58), the first gear (58) being meshingly connected with a second gear (59), the second gear (59) being sleeved on the outer wall of the corresponding sleeve (51).

3. A self-leveling rotary tiller according to claim 2, characterized in that: Each of the sleeves (51) is provided with a pulley (52), and the two pulleys (52) are connected via a belt.

4. The self-leveling rotary tiller according to claim 1, characterized in that: The oil pressure leveling mechanism (6) comprises sealing cylinders (61) located on both sides of the outer wall of the frame (1), each of the sealing cylinders (61) is movably connected to a lifting piston rod (62), and a pulley block (63) is provided at the lower end of each lifting piston rod (62).

5. The self-leveling rotary tiller according to claim 4, characterized in that: The oil pressure leveling mechanism (6) further comprises a double-headed piston rod (64), the two ends of which are movably connected to a first oil chamber (65) and a second oil chamber (66), and the interface positions of the first oil chamber (65) and the second oil chamber (66) are respectively provided with a first conduit (67) for transmitting oil in a first direction and a second conduit (68) for transmitting oil in a second direction, and the two conduits are connected to the corresponding sealing cylinder (61).

6. The self-leveling rotary tiller according to claim 5, characterized in that: The first conduit (67) and the second conduit (68) are both provided with positioning clamps (69), and the positioning clamps (69) are mounted in the frame (1) by means of screws.

7. The self-leveling rotary tiller according to claim 6, characterized in that: Two symmetrically distributed cylinders (43) are arranged on the upper side of the outer wall of the frame (1); a drive frame (44) is arranged at the output end of each cylinder (43); and both drive frames (44) are connected to the counterweight block (42).

8. The self-leveling rotary tiller according to claim 1, characterized in that: A speed reducer (56) is provided at the middle position of the rotary tiller shaft (55).

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