Novel selvedge plough installed on rotary cultivator

Abstract

The utility model discloses a novel selvedge plough installed on a rotary cultivator, a frame of the rotary cultivator is provided with a selvedge plough, the selvedge plough is pivotally connected with the frame of the rotary cultivator, a rotary power module (the rotary power module is a 12v gear motor) is arranged between the frame of the rotary cultivator and the selvedge plough, and the selvedge plough is driven by the rotary power module to rotate; the selvedge plough is pivotally connected with the rotary cultivator frame, so that the selvedge plough head swings, the swinging stroke is large, and the distance between the rotary cultivator frame and the ground is maximum when the selvedge plough is folded.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery, specifically to a novel spiral plow mounted on a rotary tiller. Background Technology

[0002] When rotary tilling paddy fields, the edges and ridges are often covered with weeds, and the ridges may have holes made by animals over time, making it difficult to retain water. Therefore, it is necessary to "tighten" the edges of the paddy fields and ridges during rotary tilling. Tightening involves using a tightening plow and rotary tillage blades to turn over and tumble the edges or ridges, and then manually or by machine stacking them into new ridges to prevent water leakage.

[0003] Since the swivel plow is only used when swiveling the plow blades, it needs to be removed from the paddy field (i.e., folded up) during rotary tillage. Current swivel plow blades use a hydraulic lifting mechanism, with the lifting or folding of the plow achieved by the movement of a hydraulic cylinder. However, the lifting stroke of this hydraulic cylinder is limited, resulting in a small distance between the swivel plow and the ground. This causes weeds in the paddy field to get stuck (clog) under the junction of the swivel plow seat and the rotary tiller frame, while also increasing resistance to the tractor's movement. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this utility model proposes a novel swivel plow that is installed on a rotary tiller. The swivel plow is pivotally connected to the rotary tiller frame, thus enabling the swivel plow blades to swing. This swing stroke is large, and when folded up, it fully preserves the space between the rotary tiller frame and the ground.

[0005] To achieve the above objectives, the present invention provides a novel swivel plow mounted on a rotary tiller. The swivel plow is mounted on the rotary tiller frame and pivotally connected to the rotary tiller frame. A rotary power module (i.e., a 12V geared motor) is provided between the rotary tiller frame and the swivel plow, which drives the swivel plow to rotate.

[0006] Preferably, the rotary power module includes a rotary power source and a worm gear reducer. Both the rotary power source and the worm gear reducer are mounted on the rotary tiller frame. The worm shaft of the rotary power source and the worm gear reducer are connected. The swivel plow and the worm gear reducer are coaxially mounted.

[0007] Preferably, the output shaft of the worm gear reducer protrudes from the rotary tiller frame. A reinforced base is installed between the bottom of the worm gear reducer and the rotary tiller frame. A limit plate is installed on the back of the swivel plow column. When the swivel plow swings downward until the plow column fully contacts the lower corner of the rotary tiller side plate, one side of the limit plate abuts against the inner side of the rotary tiller frame side plate, and the inner side of the swivel plow column abuts against the outer side of the reducer seat reinforcing rib.

[0008] Preferably, the outer edge of the swivel plow column is flush with the outer edge of the side plate of the rotary tiller frame.

[0009] Preferably, the end of the limiting plate away from the edge-trimming plow is an inclined surface that slopes inward on both sides.

[0010] Preferably, a cover is installed at the rotary power source and at the connection between the rotary power source and the worm gear reducer, so as to prevent soil and water from coming into contact with the rotary power source motor and the connection between the rotary power source and the worm gear reducer.

[0011] Preferably, the cover and the rotary tiller frame are detachably connected. A through hole is opened on the cover, and a pin is inserted into the through hole. The pin is located below the connection between the rotary power source and the worm gear reducer.

[0012] Preferably, a protective device is provided between the auger plow and the rotary power module. The protective device rotates in conjunction with the auger plow and is fixed to and rotates synchronously with the output shaft of the worm gear reducer.

[0013] Preferably, the protective device includes a sleeve and a swing arm. The sleeve is rotatably fitted with the edge-locking plow. The downwardly extending swing arm is installed on the sleeve. The swing arm is provided with a through hole for embedding steel balls and a spring. A limiting groove for the steel balls to extend into is opened on the edge-locking plow column.

[0014] Preferably, the safety device includes a sleeve and a shearing arm, wherein the shearing arm is installed on the sleeve, and coaxial shearing holes are provided on the cutting arm and the edge-trimming plow. A safety (screw) pin is inserted into the shearing holes of the shearing arm and the sleeve. The sleeve is fixed to the output shaft of the worm gear reducer, and the sleeve is rotatably fitted to the edge-trimming plow. The sleeve, the edge-trimming plow, and the output shaft of the worm gear reducer are coaxial.

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] The swivel plow is pivotally connected to the rotary tiller frame, which allows the swivel plow head to swing. This swing stroke is large, maximizing the distance between the rotary tiller frame and the ground when the swivel plow is retracted.

[0017] The speed reducer base reinforcing ribs and the rotary tiller frame side plates clamp the swivel plow column to prevent deformation of the swivel plow column during operation. Attached Figure Description

[0018] Figure 1 This is a three-dimensional view of the hem of the edge-trimming plow of this utility model.

[0019] Figure 2 This is a three-dimensional view of the top swing of the swivel plow of this utility model.

[0020] Figure 3 This is a schematic diagram of a single spiral plow and a rotary power module of this utility model.

[0021] Figure 4 This is a schematic diagram of the limiting plate and the rotary tiller frame of this utility model.

[0022] Figure 5 This is a schematic diagram of a single twisted edge plow and a limiting plate of this utility model.

[0023] Figure 6 This is a schematic diagram of the cover of this utility model.

[0024] Figure 7 This is a schematic diagram of Embodiment 2 of the present invention.

[0025] Figure 8 This is an exploded view of Embodiment 2 of the present invention.

[0026] Figure 9 This is a cross-sectional view of Embodiment 3 of the present invention.

[0027] The components include: 1. Rotary tiller frame; 2. Sliding plow; 3. Rotary power module; 4. Rotary power source; 5. Worm gear reducer; 6. Reinforced base; 7. Limiting plate; 8. Inclined surface; 9. Gearbox; 10. Cover; 11. Through hole; 12. Pin; 13. Protective safety device; 14. Shearing hole; 15. Safety pin; 16. Sleeve; 17. Shearing arm; 18. Swinging arm; 19. Steel ball; 20. Limiting groove. Detailed Implementation

[0028] The present invention will now be further described with reference to the accompanying drawings.

[0029] Example 1: As Figure 1-5 As shown, a novel swivel plow is installed on a rotary tiller. The swivel plow 2 is mounted on the rotary tiller frame 1 and is located on the front side of the rotary tiller frame 1. The swivel plow 2 is pivotally connected to the rotary tiller frame 1. A rotary power module 3 is provided between the rotary tiller frame 1 and the swivel plow 2. The rotary power module 3 drives the swivel plow 2 to rotate. When the swivel plow 2 needs to work, the rotary power module 3 swings the swivel plow 2 downward, and the back of the plow column of the swivel plow 2 is in contact with the front side of the rotary tiller frame 1. In this way, the rotary tiller frame 1 supports the swivel plow 2. When the swivel plow 2 does not need to work, the rotary power module 3 swings the swivel plow 2 upward, and the swivel plow 2 is placed on the top surface of the rotary tiller frame 1.

[0030] The rotary power module 3 includes a rotary power source 4 (which is a DC geared motor, with its output shaft extending into a gearbox 9, driving the gears inside the gearbox 9 to rotate; the power shaft extending from the gearbox 9 is connected to a worm gear reducer 5, thus the gearbox outputs low-speed, high-torque power) and a worm gear reducer 5. Both the rotary power source 4 and the worm gear reducer 5 are bolted to the top surface of the rotary tiller frame 1. The rotary power source 4 is connected to the worm of the worm gear reducer 5, and the output shaft of the rotary power source 4 is connected to the worm of the worm gear reducer 5 via a flange. Thus, the rotary power source 4 drives the worm to rotate, and the worm drives the turbine to rotate. The turbine's shaft extends out of the worm gear reducer 5 and is fixed to the plowshare of the swivel plow 2 (the plowshare of the swivel plow 2 is fitted onto the shaft, and a flat key is inserted between the shaft and the plowshare for fixation). The swivel plow 2 and the turbine of the worm gear reducer 5 are coaxially mounted, thus driving the rotation of the swivel plow 2.

[0031] The front end of the worm gear reducer 5 protrudes forward from the rotary tiller frame 1. A reinforcing base 6 extending downward is installed between the bottom of the worm gear reducer 5 and the front end face of the rotary tiller frame 1. A limiting plate 7 is installed on the back of the plow column of the swivel plow 2 by bolts. When the swivel plow 2 swings downward to the working position (that is, when the plow column of the swivel plow 2 is vertically downward), the outer side of the limiting plate 7 abuts against the inner side of the left and right side plates of the rotary tiller frame 1, the inner side of the swivel plow 2 abuts against the outer wall of the reinforcing base 6, and the top of the limiting plate 7 abuts against the bottom of the front end face of the rotary tiller frame 1. When working, the inner side of the plow column abuts against the reinforcing base 6, the outer side of the limiting plate 7 abuts against the inner side of the left and right sides of the rotary tiller frame 1, and the top of the limiting plate 7 abuts against the bottom of the front side of the rotary tiller frame 1. This can prevent the swivel plow 2 from swaying left and right and moving upward, thus ensuring the stability of the swivel plow 2 when working.

[0032] The outer wall of the swivel plow 2 is flush with the outer wall of the rotary tiller frame 1. The height difference between the outer side of the limiting plate 7 and the step of the swivel plow 2 is equal to the thickness of the left and right sides of the rotary tiller frame 1. This ensures that the limiting plate 7 rests against the inner wall of the left and right sides of the rotary tiller frame 1, and the outer walls of the left and right sides of the rotary tiller frame 1 are flush with the outer wall of the swivel plow 3. This can prevent grass from getting stuck between the swivel plow 3 and the rotary tiller frame 1.

[0033] The end of the limiting plate 7 away from the swivel plow 2 is a sloping surface 8 that slopes inward on both sides. This prevents the end of the limiting plate 7 away from the plow column from hitting the side of the rotary tiller frame 1 and being unable to swing downward when it swings. The sloping surface 8 makes it easier for the swivel plow 2 to swing downward (when the plow column shifts a small distance to the left or right, it can be corrected and aligned through the sloping surface 8).

[0034] A cover 10 is installed at the rotary power source 4 and at the connection between the rotary power source 4 and the worm gear reducer 5. A protective tube is fixed between the worm gear reducer 5 and the rotary power source 4 by bolts. The two ends of the protective tube are respectively fixed to the outer wall of the worm gear reducer 5 and the rotary power source 4 by bolts. The protective tube protects the connection between the rotary power source 4 and the worm gear reducer 5 (the rotary power source 4 and the worm gear reducer 5 transmit power through a shaft, and the protective tube protects the shaft). The cover 10 prevents soil and water from contacting the rotary power source 4 and the connection between the rotary power source 4 and the worm gear reducer 5.

[0035] The cover 10 is detachably connected to the rotary tiller frame 1. A through hole 11 is opened on the cover 10, and a pin 12 is inserted into the through hole 11. The pin 12 is located below the connection between the rotary power source 4 and the worm gear reducer 5 (the pin 12 contacts the outer wall of the connecting pipe). The cover 10 can be removed by pulling out the pin 12.

[0036] The folding plow is raised or lowered by controlling the forward and reverse rotation of the geared motor. Power is led out from the cab and connected to a selector switch via a wire. The selector switch is connected to the geared motor via a wire, thus enabling the geared motor to rotate forward, reverse, and stop.

[0037] Example 2: Figure 7-8As shown, a protective safety device 13 is provided between the auger plow 2 and the output shaft of the worm gear reducer 5. A round hole is opened at the top of the auger plow 2, and the protective safety device 13 is inserted into the round hole, so that the protective safety device 13 can rotate relative to the auger plow. The protective safety device 13 is fixed to the output shaft of the worm gear reducer 5 and rotates synchronously. A keyway for embedding a flat key is opened on the inner wall of the protective safety device 13 and the output shaft of the worm gear reducer 5. The protective safety device 13 is sleeved on the output shaft, and the flat key is inserted between the protective safety device 13 and the output shaft to complete the fixation between the protective safety device 13 and the output shaft. In this way, the worm gear reducer 5 drives the protective safety device 13 to rotate. A coaxial cutting hole 14 is opened on the auger plow 2 and the protective safety device 14, and a cutting bolt 15 is inserted into the cutting hole 14. The cutting bolt 15 is offset from the output shaft of the worm gear reducer 5. The shaft is designed so that the protective safety 13 and the swivel plow 2 can rotate synchronously through the cutting bolt 15. When working, if the rotary tiller frame 1 moves backward and the swivel plow 2 is not raised due to the operator not swinging it up, the soil pressing against the back of the swivel plow 2 will cause the swivel plow 2 to swing upward. Since the worm gear reducer 5 is in a locked state, the turbine inside the worm gear reducer 5 will burst due to the force of the swivel plow 2, resulting in damage to the worm gear reducer 5. The protective safety 13 used in this application will cut the cutting bolt 15 first when the swivel plow 2 swings upward (the cutting bolt 15 is a small diameter bolt, which is easy to cut, and will not cut the cutting bolt when the worm gear reducer drives the swivel plow to swing). In this way, the swivel plow 2 and the protective safety 13 will rotate relative to each other, thus preventing damage to the worm gear reducer 5.

[0038] The protective device 13 includes a sleeve 16 and a cutting arm 17. The sleeve 13 is a circular sleeve, and the downward-extending cutting arm 17 is installed on the sleeve 16 by welding. The cutting arm 17 is in contact with the plow column of the swivel plow 2. A lug plate is installed on the plow column of the swivel plow 2 by welding. A coaxial cutting hole 14 is opened on the cutting arm 17 and the lug plate of the swivel plow 2. A cutting bolt 15 is inserted into the cutting hole of the cutting arm 17 and the swivel plow 2. A keyway is opened on the inner wall of the sleeve 16 and the output shaft of the worm gear reducer 5. A flat key is inserted into the keyway to fix the two together. The sleeve 16 and the swivel plow 2 are rotatably fitted together. The output shaft of the sleeve 16, the swivel plow 2, and the worm gear reducer 5 are coaxial. When the swivel plow 2 does not rise and the rotary tiller frame 1 moves backward, the swivel plow 2 and the cutting arm 17 will cut the cutting bolt 15, thus avoiding direct damage to the worm gear reducer 5.

[0039] like Figure 9As shown in Embodiment 3, the protective safety device includes a sleeve 13 and a swing arm 18. The sleeve 13 is rotatably engaged with the auger plow. The sleeve 13 is fitted onto the output shaft of the worm gear reducer 5. The output shaft of the worm gear reducer 5 and the sleeve 13 are fixed by a flat key. The top of the auger plow column has a circular hole for inserting the sleeve 13. The sleeve 13 is inserted into the circular hole of the auger plow column, and the outer wall of the sleeve 13 fits against the inner wall of the circular hole. Thus, the sleeve 13 is rotatably engaged with the auger plow column. A downwardly extending swing arm 18 is fixed to the sleeve 13 by welding. The swing arm 18 has a through hole for embedding a steel ball 19 and a spring. The steel ball 19 and the spring are embedded in the through hole. The spring pushes the steel ball 19 towards the auger plow. The plow column has a limiting groove 20 for steel balls to enter. A spring pushes the steel balls 19 into the limiting groove 20, which is a semi-circular groove, with half of the steel ball embedded within it. During operation, when the plow is not swinging upwards and the rotary tiller frame moves backwards, the back of the plow experiences a forward pushing force. When this force is significant, the plow presses the steel balls 19 into the through hole and disengages them from the limiting groove 20. Once the steel balls 19 are completely disengaged from the limiting groove 20, the sleeve 13 unlocks from the plow. This prevents damage to the worm gear reducer. Similarly, when the plow is not swinging to contact the front side of the rotary tiller frame, damage to the worm gear reducer is also prevented when the rotary tiller frame moves forward.

Claims

1. A novel swivel plow mounted on a rotary tiller, wherein the swivel plow is mounted on the frame of the rotary tiller, characterized in that, The swivel plow is pivotally connected to the rotary tiller frame. A rotary power module is installed between the rotary tiller frame and the swivel plow, which drives the swivel plow to rotate.

2. The novel swivel plow installed on a rotary tiller according to claim 1, characterized in that, The rotary power module includes a rotary power source and a worm gear reducer. Both the rotary power source and the worm gear reducer are mounted on the rotary tiller frame. The power shaft of the rotary power source is connected to the worm shaft of the worm gear reducer, and the swivel plow is coaxially mounted with the worm gear reducer.

3. A novel swivel plow installed on a rotary tiller according to claim 2, characterized in that, The output shaft of the worm gear reducer protrudes from the rotary tiller frame. A reinforcing base is installed between the bottom of the worm gear reducer and the rotary tiller frame. A limit plate is installed on the back of the swivel plow column. When the swivel plow swings downward to the working position, one side of the limit plate abuts against the inner side of the rotary tiller frame side plate, and the inner side of the swivel plow column abuts against the outer side of the reinforcing rib of the worm gear reducer seat.

4. A novel swivel plow mounted on a rotary tiller according to claim 1 or 2, characterized in that, The outer edge of the swivel plow column is flush with the outer edge of the side plate of the rotary tiller frame.

5. A novel swivel plow mounted on a rotary tiller according to claim 4, characterized in that, The end of the limiting plate away from the plow column of the edge-locking plow is a sloping surface that slopes inward on both sides.

6. A novel swivel plow mounted on a rotary tiller according to claim 5, characterized in that, A cover is installed at the rotary power source and at the connection between the rotary power source and the worm gear reducer to prevent soil and water from coming into contact with the rotary power source and the connection between the rotary power source and the worm gear reducer.

7. A novel spiral plow mounted on a rotary tiller according to claim 6, characterized in that, The cover is detachably connected to the motor and housing.

8. A novel swivel plow mounted on a rotary tiller according to claim 1 or 2, characterized in that, A safety device is installed between the auger plow and the rotary power module. The safety device rotates in conjunction with the auger plow and is fixed to and rotates synchronously with the output shaft of the worm gear reducer.

9. A novel swivel plow mounted on a rotary tiller according to claim 8, characterized in that, The protective device includes a sleeve and a swing arm. The sleeve rotates with the edge-locking plow. A downward-extending swing arm is installed on the sleeve. The swing arm has through holes for embedding steel balls and springs. A limiting groove for the steel balls to extend into is opened on the edge-locking plow column.

10. A novel swivel plow mounted on a rotary tiller according to claim 8, characterized in that, The protective device includes a sleeve and a cutting arm. The cutting arm is mounted on the sleeve, and coaxial cutting holes are provided on the cutting arm and the edge-trimming plow column. A safety screw is inserted into the cutting holes of the cutting arm and the sleeve. The sleeve is fixed to the output shaft of the worm gear reducer. The sleeve and the edge-trimming plow are rotatably fitted together. The sleeve, the edge-trimming plow sleeve, and the output shaft of the worm gear reducer are coaxial.

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