A rotary drilling attachment

Abstract

The present invention relates to the field of agricultural planting technology, and in particular to a rotary drilling attachment, comprising a connecting frame, a rotary drive member, and a rotary drilling barrel, wherein the rotary drive member comprises a disc and a motor, wherein a turntable is rotatably provided in the disc, the motor is fixedly connected to the disc, and the motor is transmission-connected to the turntable; one end of the rotary drilling barrel is fixedly connected to the turntable, and the other end is provided with a baffle, one end of the baffle is hinged to the rotary drilling barrel, and the other end is clamped to the rotary drilling barrel via a snap assembly; the baffle is provided with a feed port; the baffle is provided with a cutter disc, the cutter disc has a digging opening, and the cutter disc is provided with a cutter head; the connecting frame is fixedly connected to a side of the disc away from the rotary drilling barrel, and a fertilizer pipe is fixedly provided on the connecting frame. The rotary drilling attachment of the present invention can improve the efficiency of digging and fertilizing, and reduce labor costs.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural planting, in particular to a rotary drilling attachment. Background Art

[0002] In the planting of crops in holes (such as peanuts, corn, sweet potatoes, fruit trees, etc.), in order to increase the various nutrients in the soil, it is necessary to dig holes and then fill the holes with fertilizers. At present, planting is generally done manually, first digging holes with a pickaxe, and then fertilizing manually. This method is not only labor-intensive and physically demanding, but also has low work efficiency and poor hole-digging quality. It requires a large amount of labor and cannot guarantee the quality and efficiency of hole digging. In addition, it is difficult to control the amount of fertilizer with manual fertilization, resulting in high agricultural production costs and difficulty in achieving scientific and reasonable fertilization.

[0003] Although there are machines and equipment for digging holes and applying fertilizers, their efficiency is still insufficient. For example, in the patent document (CN201521017232.4 A novel digging and fertilizing machine for fruit tree planting), it includes a base plate, a left support plate, a right support plate, a push rod, a digging device, a fertilizing device and a running wheel. The upper surface of the base plate is fixed with a left support plate and a right support plate, and two symmetrically arranged push rods are fixed on the upper side of the left support plate. The digging device is arranged between the left support plate and the right support plate, and a corresponding fertilizing device is fixed on the right side of the right support plate. A running wheel is fixed at each of the four corners of the lower surface of the base plate, and the surface of the running wheel is engraved with a tire texture suitable for walking on a slope. The patent document temporarily stores the soil produced by digging a hole in a casing by driving the auger in a forward direction. When the soil in the casing needs to be discharged, the auger needs to be driven in a reverse direction, which makes the soil discharge efficiency low, thereby resulting in the disadvantage of insufficient digging efficiency. Summary of the Invention

[0004] The present invention solves at least one of the technical problems mentioned in the above background technology and provides a rotary drilling attachment that can improve the efficiency of digging holes and applying fertilizers and reduce labor costs.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A rotary drilling attachment includes a connecting frame, a rotary driving member, and a rotary drilling barrel. The rotary driving member includes a disc body and a motor. A turntable is rotatably arranged in the disc body. The motor is fixedly connected to the disc body and is in transmission connection with the turntable.

[0007] The rotary drilling cylinder is located on one side of the disk body, one end of the rotary drilling cylinder is fixedly connected to the turntable, the rotary drilling cylinder is provided with a cavity, and the end of the rotary drilling cylinder away from the turntable is provided with a cylinder mouth communicating with the cavity; the cylinder mouth is provided with a baffle, one end of the baffle is hinged to the rotary drilling cylinder, and the other end is clamped to the rotary drilling cylinder through a snap assembly;

[0008] The baffle is provided with a feed port connected to the cavity on opposite sides; a cutter disc is rotatably provided on a side of the baffle away from the rotary drilling cylinder, and a digging opening is respectively provided on opposite sides of the cutter disc, and a cutter head is fixedly provided on opposite sides of the cutter disc, and the cutter head is located on one side of the digging opening, and the baffle is provided with a limiter, which limits the rotation angle of the cutter disc so that the cutter disc can close the feed port, or align the digging opening with the feed port and the cutter head faces the feed port;

[0009] The connecting frame is fixedly connected to a side of the disc away from the rotary drilling cylinder. The connecting frame is fixedly provided with a fertilizer pipe. The fertilizer pipe passes through the disc, and the discharge end of the fertilizer pipe passes into the cavity.

[0010] Furthermore, the outer wall of the rotary drilling barrel is provided with a rotary drilling thread with a spiral structure.

[0011] Furthermore, there are two limiting members, and the two limiting members are arranged opposite to each other. The limiting members are located on one side of the feed port, and the limiting members are fixedly connected to the side of the baffle away from the rotary drilling barrel, so that the opposite side walls of the excavation port can respectively abut against the two sides of the limiting members.

[0012] Furthermore, the cutter head is located at the digging mouth, one end of the cutter head is fixedly connected to the cutter disc, and the other end is a blade. The cutter head is tilted, and the end of the cutter head close to the blade is tilted away from the rotary digging barrel.

[0013] Furthermore, the buckle assembly includes a first buckle, a connecting piece, a second buckle and a driving rod, wherein the first buckle is located on a side of the baffle facing the rotary drilling barrel, and one end of the first buckle is fixedly connected to a side of the baffle away from its hinge, and the other side is provided with a first buckle body;

[0014] The connecting piece is located in the cavity, one end of the connecting piece is fixedly connected to the inner wall of the rotary drilling barrel, and the other end is rotatably connected to the middle part of the second clip. One end of the second clip is provided with a second buckle body that is snap-fitted with the first buckle body, and the other end is rotatably connected to the driving rod. The end of the driving rod away from the second buckle is provided with a driving mechanism so that the driving rod can move toward or away from the barrel mouth.

[0015] Furthermore, the driving mechanism includes a driving frame, a telescopic rod and a reset rod, one end of the driving frame is fixedly connected to the driving rod, and the other end is located at the axis of the rotary drilling barrel, one end of the telescopic rod is fixedly connected to the center of the disk body, and the other end faces the driving frame, and the telescopic rod pushes the driving frame when it is extended; the reset rod is located between the telescopic rod and the driving rod, one end of the reset rod is fixedly connected to the driving frame, and the other end penetrates into the disk body, and the end of the reset rod located in the disk body is sleeved with a reset spring, one end of the reset spring abuts against the reset rod, and the other end abuts against the disk body. Under the elastic force of the reset spring, the reset rod moves toward the direction close to the disk body.

[0016] Furthermore, the baffle is hinged to the rotary drilling barrel through a hinge, and the maximum angle between the baffle and the barrel mouth is 60°; one side of the first buckle body and the second buckle body is provided with an inclined surface for sliding fit;

[0017] Furthermore, the baffle and the cutter disc are provided with a penetrating mounting hole at the center of the circle, and the mounting hole is provided with a bolt. The bolt passes through the mounting holes of the baffle and the cutter disc and is rotatably connected to the mounting hole. The bolt is provided with a fastener on the threaded sleeve at one end close to the rotary drilling barrel.

[0018] Furthermore, the connecting frame is fixedly connected to a side of the disc body away from the rotary drilling barrel, and the connecting frame is provided with a rotary hydraulic switch valve, and the rotary hydraulic switch valve is connected to the motor through a conduit.

[0019] Furthermore, an ultrasonic rangefinder is fixedly provided on the outer wall of the disc body, and the probe of the ultrasonic rangefinder is directed toward the barrel mouth; the ultrasonic rangefinder is electrically connected to the rotary hydraulic switch valve through a controller.

[0020] The beneficial effects of the present invention are:

[0021] 1. By installing the connecting frame on agricultural machinery and equipment, such as excavators and hook machines, the agricultural machinery and equipment is used to press the rotary drilling drum to the soil surface where the hole is to be dug, and by controlling the motor to rotate forward, the turntable can drive the rotary drilling drum to rotate forward, and the cutter head rotates due to friction with the soil. Under the action of the limiter, the digging opening is aligned with the feed opening, so that the soil dug by the cutter head passes through the digging opening and the feed opening in sequence and enters the cavity; when the rotary drilling drum digs to the required depth, the motor is controlled to reverse, and the rotary drilling drum is reversed at the same time, and the cutter head rotates due to friction with the soil. Under the action of the limiter, the cutter head can close the feed opening, so that the dug soil can be temporarily stored in the cavity, and the rotary drilling drum is lifted and moved to the side of the pit by the agricultural machinery and equipment, and then the buckle assembly is opened and the rotary drilling drum is shaken in conjunction with the agricultural machinery and equipment, so that the soil in the cavity can be quickly discharged out of the cavity, thereby overcoming the disadvantage of low soil discharge efficiency of traditional auger which requires reversal, can improve the efficiency of pit digging and fertilizing, and reduce labor costs. In the present invention, one end of the fertilizer pipe away from the cavity can be connected to the fertilizer tank on the agricultural machinery and equipment, and the fertilizer pipe is provided with a hydraulic switch valve to control the opening and closing of the fertilizer pipe. After the pit is dug, the hydraulic switch valve can be opened to allow the fertilizer to enter the cavity along the fertilizer pipe and be discharged into the dug pit through the barrel mouth, thereby completing the fertilization after digging the pit.

[0022] 2. Under the elastic force of the return spring, the drive frame moves away from the barrel opening, causing the drive rod to pull one end of the second clip and bring the second clip into contact with the connecting piece, achieving a mutually engaged state between the second clip body and the first clip body, so that the periphery of the baffle is in contact with the barrel opening, thereby sealing the barrel opening. When the baffle needs to be opened, the telescopic rod is extended, the drive frame is pressed down, and the drive frame moves toward the barrel opening, causing the drive rod to push the second clip to rotate and open. At the same time, under the action of the baffle's own gravity and the weight of the soil in the cavity, the second clip body is separated from the first clip body, and the soil in the cavity can be quickly discharged through the barrel opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a rotary drilling attachment according to a preferred embodiment of the present invention.

[0024] Figure 2 It is a schematic diagram of the rotary drilling barrel structure of a rotary drilling attachment according to a preferred embodiment of the present invention.

[0025] Figure 3 It is a schematic diagram of the baffle structure of a rotary drilling attachment according to a preferred embodiment of the present invention.

[0026] Figure 4 It is a schematic diagram of the cutter head structure of a rotary drilling attachment according to a preferred embodiment of the present invention.

[0027] Figure 5 It is a schematic structural diagram of a buckle assembly of a rotary drilling attachment according to a preferred embodiment of the present invention.

[0028] Figure 6 It is a schematic structural diagram of the driving mechanism of a rotary drilling attachment according to a preferred embodiment of the present invention.

[0029] In the figure, 1-connecting frame, 11-fertilization pipe, 12-rotating hydraulic switch valve, 13-telescopic hydraulic switch valve, 2-rotary drive member, 21-disc body, 22-motor, 23-turntable, 3-rotary digging barrel, 301-cavity, 302-barrel mouth, 303-rotary digging thread, 31-baffle, 32-cutter head, 321-digging mouth, 322-blade, 33-limiting member, 4-first buckle, 401-first buckle body, 41-connecting member, 42-second buckle, 421-second buckle body, 422-connecting handle, 43-driving rod, 5-driving frame, 51-telescopic rod, 52-reset rod, 521-reset spring, 6-bolt, 61-fastener, 7-ultrasonic rangefinder. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0031] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] Please also see Figures 1 to 6A rotary drilling attachment according to a preferred embodiment of the present invention includes a connecting frame 1, a rotary driving component 2 and a rotary drilling barrel 3. The rotary driving component 2 includes a disc body 21 and a motor 22. A turntable 23 is rotatably arranged in the disc body 21. The motor 22 is fixedly connected to the disc body 21, and the motor 22 is transmission-connected to the turntable 23.

[0034] like Figure 1 and Figure 2 As shown, the rotary barrel 3 is located on one side of the disc 21, with one end of the barrel fixedly connected to the turntable 23. The barrel 3 defines a cavity 301, and an opening 302, which communicates with the cavity 301, is located at the end of the barrel 3 facing away from the turntable 23. Opening 302 is provided with a baffle 31, one end of which is hinged to the barrel 3 and the other end of which is engaged with the barrel 3 via a snap assembly. In this embodiment, the outer wall of the barrel 3 is provided with spiral threads 303. These threads facilitate the insertion of the barrel 3 into the soil, improving digging efficiency.

[0035] The baffle 31 is provided with feed ports 311 connected to the cavity 301 on opposite sides of the baffle 31; a cutter disc 32 is rotatably provided on one side of the baffle 31 away from the rotary drilling cylinder 3, and a digging opening 320 is respectively provided on opposite sides of the cutter disc 32. A cutter head 321 is fixedly provided on opposite sides of the cutter disc 32, and the cutter head 321 is located on one side of the digging opening 320. The baffle 31 is provided with a limiter 33, which limits the rotation angle of the cutter disc 32 so that the cutter disc 32 can close the feed port 311, or align the digging opening 320 with the feed port 311 and the cutter head 321 faces the feed port 311.

[0036] The connecting frame 1 is fixedly connected to the side of the disc 21 away from the rotary drilling barrel 3. The connecting frame 1 is fixedly provided with a fertilizer pipe 11, which is passed through the disc 21 and the discharge end of the fertilizer pipe 11 passes through the cavity 301. The connecting frame 1 can be installed on agricultural machinery such as an excavator or a hook machine.

[0037] In this embodiment, the turntable 23 of this embodiment is a worm gear turntable, the motor 22 is connected to the turntable 23 through a worm, the motor 22 is a hydraulic motor, the connecting frame 1 is provided with a rotating hydraulic switch valve 12, and the agricultural machinery equipment is provided with a compressor. The rotating hydraulic switch valve 12 is electrically connected to the motor 22 and the compressor through a conduit to control the start, stop, forward rotation and reverse rotation of the motor 22.

[0038] An ultrasonic rangefinder 7 is fixedly provided on the outer wall of the disc body 21, and the probe of the ultrasonic rangefinder 7 is facing the direction of the barrel mouth 302; the ultrasonic rangefinder 7 is electrically connected to the rotary hydraulic switch valve 12 through the controller. Two rotary hydraulic switch valves 12 are provided for forward and reverse control of the motor, and the two rotary hydraulic switch valves 12 are interlocked. Only one of the rotary hydraulic switch valves 12 can be in the operating state. By controlling the rotary hydraulic switch valve 12 to switch by the controller, the forward and reverse rotation and start and stop control of the motor 22 can be realized.

[0039] The ultrasonic rangefinder 7 is provided with an ultrasonic generator and an ultrasonic receiver. The ultrasonic wave emitted by the ultrasonic generator is reflected by the soil surface to the ultrasonic receiver. The distance is calculated based on the time from the emission to the reception of the ultrasonic wave and the ultrasonic propagation speed, thereby obtaining the digging depth of the rotary drilling drum 3. The controller is a control module composed of PLC, and the control button for providing input signals to the controller can be set on the agricultural machinery equipment.

[0040] In this embodiment, the digging depth can be preset, and the controller obtains real-time data of the digging depth of the rotary drilling drum 3 based on the ultrasonic range finder 7. When the ultrasonic range finder 7 obtains the preset value, it proves that the rotary drilling drum 3 has dug to the required depth. At this time, the controller turns the hydraulic switch valve 12 to close, so that the rotary drilling drum 3 stops digging, thereby achieving the same required digging depth each time.

[0041] By installing the connecting frame 1 on agricultural machinery and equipment, such as an excavator, a hook machine, etc., the rotary digging barrel 3 is pressed toward the soil surface where a hole is to be dug, and the motor 22 is controlled to rotate forward, so that the turntable 23 can drive the rotary digging barrel 3 to rotate forward, and the cutter head 321 rotates by friction with the soil. Under the action of the limiter 33, the digging opening 320 is aligned with the feed opening 311, so that the soil dug by the cutter head 321 passes through the digging opening 320 and the feed opening 311 in sequence and enters the cavity 301; when the rotary digging barrel 3 has dug to the desired depth, the motor 22 is controlled to reverse, and at the same time The rotary drilling drum 3 is reversed, and the cutter head 321 rotates due to friction with the soil. Under the action of the limiter 33, the cutter head 32 can close the feed port 311, so that the excavated soil can be temporarily stored in the cavity 301. The rotary drilling drum 3 is lifted and moved to the side of the pit by agricultural machinery and equipment. Then, the buckle assembly is opened and the rotary drilling drum 3 is shaken in conjunction with the agricultural machinery and equipment, so that the soil in the cavity 301 can be quickly discharged to the outside of the cavity 301, which overcomes the disadvantage of low soil discharge efficiency of traditional spiral drills due to the need to reverse, can improve the efficiency of digging and fertilizing, and reduce labor costs.

[0042] The end of the fertilizer pipe 11 in this embodiment away from the cavity 301 can be connected to a fertilizer tank on agricultural machinery, and a valve is provided on the fertilizer pipe 11 to control the opening and closing of the fertilizer pipe 11. After the pit is dug, the valve can be opened to allow fertilizer to flow along the fertilizer pipe 11 into the cavity 301 and be discharged into the dug pit through the nozzle 302, thus completing the post-digging fertilization. By controlling the opening time of the valve, the precise amount of fertilizer can be controlled.

[0043] like Figure 3 and Figure 4 As shown, there are two limit members 33, and the two limit members 33 are arranged opposite to each other. The limit members 33 are located on one side of the feed port 311, and the limit members 33 are fixedly connected to the side of the baffle 31 away from the rotary drilling barrel 3, so that the opposite side walls of the excavation 320 can respectively abut against the two sides of the limit members 33.

[0044] The cutter head 321 is located at the excavation opening 320. One end of the cutter head 321 is fixedly connected to the cutter disc 32, and the other end is a blade 322. The cutter head 321 is tilted, and the end of the cutter head 321 close to the blade 322 is tilted away from the rotary drilling barrel 3. The tilted structure of the cutter head 321 can facilitate soil to enter the cavity 301 along the surface of the cutter head 321.

[0045] When the cutter disc 32 comes into contact with the soil, by rotating the rotary drilling drum 3 forward, under the action of friction, the cutter disc 32 rotates and the side of the digging opening 320 away from the cutter head 321 comes into contact with the limit member 33, so that the digging opening 320 is aligned with the feed port 311 and the cutter head 321 faces the feed port 311, so that after the rotary drilling drum 3 continues to rotate, the soil dug by the cutter head 321 passes through the digging opening 320 and the feed port 311 in turn and enters the cavity 301; after the rotary drilling drum 3 digs to the required depth, by rotating the rotary drilling drum 3 in the reverse direction, under the action of friction, the cutter disc 32 rotates and the side of the digging opening 320 close to the cutter head 321 comes into contact with the limit member 33, so that the cutter disc 32 can close the feed port 311, thereby temporarily storing the soil in the cavity 301.

[0046] In this embodiment, a through-hole is provided at the center of each of the baffle plate 31 and the cutter head 32. A bolt 6 is provided in the mounting hole. The bolt 6 is passed through the mounting holes of the baffle plate 31 and the cutter head 32 and is rotatably connected thereto. A fastener 61 is threadedly sleeved on one end of the bolt 6, which faces the interior of the rotary drilling barrel 3. By unscrewing the fastener 61 out of the bolt 6, the cutter head 32 can be removed from the baffle plate 31, facilitating replacement and maintenance of the cutter head 32.

[0047] like Figure 5 and Figure 6As shown, the snap assembly includes a first snap 4, a connecting piece 41, a second snap 42 and a driving rod 43. The first snap 4 is located on the side of the baffle 31 facing the rotary drilling barrel 3, and one end of the first snap 4 is fixedly connected to the side of the baffle 31 away from its hinge, and the other side is provided with a first snap body 401.

[0048] The connecting piece 41 is located in the cavity 301, one end of the connecting piece 41 is fixedly connected to the inner wall of the rotary drilling barrel 3, and the other end is rotatably connected to the middle part of the second buckle 42. One end of the second buckle 42 is provided with a second buckle body 421 that is snap-fitted with the first buckle body 401, and the other end is rotatably connected to the driving rod 43. The driving rod 43 is provided with a driving mechanism at the end away from the second buckle 42 so that the driving rod 43 can move toward or away from the barrel mouth 302.

[0049] The driving mechanism includes a driving frame 5, a telescopic rod 51 and a reset rod 52. One end of the driving frame 5 is fixedly connected to the driving rod 43, and the other end is located at the axis of the rotary drilling barrel 3. One end of the telescopic rod 51 is fixedly connected to the center of the disk body 21, and the other end is facing the driving frame 5. When the telescopic rod 51 is extended, it pushes the driving frame 5.

[0050] The reset rod 52 is located between the telescopic rod 51 and the driving rod 43. One end of the reset rod 52 is fixedly connected to the driving frame 5, and the other end penetrates into the disk body 21. A reset spring 521 is sleeved on the end of the reset rod 52 located in the disk body 51. One end of the reset spring 521 abuts against the reset rod 52, and the other end abuts against the disk body 21. Under the elastic force of the reset spring 521, the reset rod 52 moves toward the disk body 21.

[0051] Under the elastic force of the return spring 521, the drive frame 5 moves away from the barrel opening 302, causing the drive rod 43 to pull one end of the second buckle 42 and lift the second buckle 42, thereby achieving a mutually engaged state between the second buckle body 421 and the first buckle body 401, so that the periphery of the baffle 31 is in contact with the barrel opening 302, thereby sealing the barrel opening 302. When the baffle 31 needs to be opened, the telescopic rod 51 is extended, the drive frame 5 is pressed down, and the drive frame 5 moves toward the barrel opening 302, so that the drive rod 43 pushes the second buckle 42 to rotate and open. At the same time, under the action of the weight of the baffle 31 itself and the weight of the soil in the cavity 301, the second buckle body 421 is separated from the first buckle body 401, and the soil in the cavity 301 can be quickly discharged through the barrel opening 302.

[0052] In this embodiment, the second buckle 42 includes a connecting handle 422 and a second buckle body 421. The connecting handle 422 is fixedly connected to the second buckle body 421, and the angle between the connecting handle 422 and the second buckle body 421 is 90°. The junction of the connecting handle 422 and the second buckle body 421 is rotatably connected to the connecting member 41, and the other end is rotatably connected to the driving rod 43. When the reset spring 521 is in the free state, the end of the connecting handle 422 close to the driving rod 43 is lifted, so that the second buckle body 421 can be hooked on the first buckle body 401, thereby realizing that the second buckle body 421 and the first buckle body 401 are in a state of mutual engagement.

[0053] The telescopic rod 51 is hydraulically telescopic, and the connecting frame 1 is equipped with a telescopic hydraulic switch valve 13. This valve is connected to the telescopic rod 51 and the compressor via conduits to control the extension and retraction of the telescopic rod 51. The telescopic hydraulic switch valve 13 in this embodiment can also be controlled by a controller or a control module of the agricultural machinery. Because one end of the drive frame 5 is fixedly connected to the drive rod 43 and the other end is located on the axis of the rotary drum 3, and one end of the telescopic rod 51 is fixedly connected to the center of the disc 21, when the rotary drum 3 stops at any position after rotation, the telescopic rod 51 can be aligned with the drive frame 5 to propel the drive frame 5.

[0054] In this embodiment, the baffle 31 is hingedly connected to the rotary drilling barrel 3 via a hinge 312, and the maximum angle between the baffle 31 and the barrel opening 302 is 60°. Slidingly engaged inclined surfaces are provided on one side of the first and second latch bodies 401, 421. In this embodiment, the inclined surfaces are located on the outer sides of the corresponding first and second latch bodies 401, 421, allowing the first and second latch bodies 401, 421 to move closer to each other along the inclined surfaces.

[0055] By limiting the maximum rotation angle of the baffle 31, the baffle 31 can rotate and abut against the barrel mouth 302 when the rotary drilling barrel 3 is pressed downward. At the same time, under the action of the inclined surfaces of the first buckle body 401 and the second buckle body 421, the first buckle body 401 and the second buckle body 421 can be engaged with each other, and the baffle 31 can be closed without the need for additional structure, which makes the structure of the rotary drilling attachment simple and reduces the production cost of the rotary drilling attachment.

[0056] When using the rotary drilling attachment of this embodiment, the connecting frame 1 is installed on the agricultural machinery and equipment, and the agricultural machinery and equipment is controlled to press the rotary drilling drum 3 toward the soil surface where the hole is to be dug. The motor 22 is controlled to rotate forward, and the turntable 23 drives the rotary drilling drum 3 to rotate forward. The cutter head 321 rotates due to friction with the soil. Under the action of the limit member 33, the digging opening 320 is aligned with the feed opening 311, so that the soil dug by the cutter head 321 passes through the digging opening 320 and the feed opening 311 in sequence and enters the cavity 301.

[0057] After the rotary drilling drum 3 digs to the required depth, the ultrasonic rangefinder 7 obtains the preset value, and the controller rotates the hydraulic switch valve 12 to close, so that the rotary drilling drum 3 stops digging, and then controls the motor 22 to reverse through the controller. At the same time, the rotary drilling drum 3 reverses, and the cutter head 321 rotates due to friction with the soil. Under the action of the limit member 33, the cutter head 32 can close the feed port 311, so that the excavated soil can be temporarily stored in the cavity 301.

[0058] The rotary drilling drum 3 is lifted and moved to the side of the pit by agricultural machinery, and then the buckle assembly is opened and the rotary drilling drum 3 is shaken with the cooperation of the agricultural machinery so that the soil in the cavity 301 can be quickly discharged out of the cavity 301.

[0059] In this embodiment, the soil dug out from the last pit can be put into the previous pit, and finally the soil from the first pit can be put into the last pit. Alternatively, the soil obtained from the dug pit can be placed beside the corresponding pit and filled manually after fertilization.

Claims

1. A rotary drilling attachment, characterized in that: The rotary driving member includes a connecting frame, a rotary driving member and a rotary drilling barrel. The rotary driving member includes a disc body and a motor. A rotary disc is rotatably provided in the disc body. The motor is fixedly connected to the disc body, and the motor and the rotary disc are transmission-connected. The rotary drilling barrel is located on one side of the disc body. One end of the rotary drilling barrel is fixedly connected to the rotary disc. The rotary drilling barrel is provided with a cavity. The end of the rotary drilling barrel away from the rotary disc is provided with a barrel opening connected to the cavity. The barrel opening is provided with a baffle. One end of the baffle is hinged to the rotary drilling barrel, and the other end is clamped to the rotary drilling barrel through a snap assembly. The buckle assembly includes a first buckle, a connecting piece, a second buckle and a driving rod, the first buckle is located on a side of the baffle facing the rotary drilling barrel, and one end of the first buckle is fixedly connected to a side of the baffle away from its hinge, and the other side is provided with a first buckle body; the connecting piece is located in the cavity, one end of the connecting piece is fixedly connected to the inner wall of the rotary drilling barrel, and the other end is rotatably connected to the middle part of the second buckle, one end of the second buckle is provided with a second buckle body that is engaged with the first buckle body, and the other end is rotatably connected to the driving rod, and the end of the driving rod away from the second buckle is provided with a driving mechanism so that the driving rod can move toward or away from the barrel mouth; The driving mechanism includes a driving frame, a telescopic rod and a reset rod, one end of the driving frame is fixedly connected to the driving rod, and the other end is located at the axis of the rotary drilling barrel, one end of the telescopic rod is fixedly connected to the center of the disc body, and the other end faces the driving frame. When the telescopic rod is extended, it pushes the driving frame; the reset rod is located between the telescopic rod and the driving rod, one end of the reset rod is fixedly connected to the driving frame, and the other end penetrates into the disc body, and a reset spring is sleeved on the end of the reset rod located in the disc body, one end of the reset spring abuts against the reset rod, and the other end abuts against the disc body. Under the elastic force of the reset spring, the reset rod moves toward the disc body; Feed ports connected to the cavity are provided on opposite sides of the baffle; a cutter disc is rotatably provided on one side of the baffle away from the rotary excavator, and digging openings are respectively provided on opposite sides of the cutter disc, and cutter heads are fixedly provided on opposite sides of the cutter disc, and the cutter heads are located on one side of the digging opening. The baffle is provided with a limiter, which limits the rotation angle of the cutter disc so that the cutter disc can close the feed opening, or align the digging opening with the feed opening and the cutter head faces the feed opening; The connecting frame is fixedly connected to the side of the disc body away from the rotary drilling barrel. The connecting frame is fixedly provided with a fertilizer pipe, the fertilizer pipe is passed through the disc body, and the discharge end of the fertilizer pipe passes through the cavity; The connecting frame is fixedly connected to a side of the disc body away from the rotary drilling barrel. The connecting frame is provided with a rotary hydraulic switch valve, and the rotary hydraulic switch valve is connected to the motor through a conduit.

2. The rotary drilling attachment according to claim 1, characterized in that: The outer wall of the rotary drilling tube is provided with a rotary drilling thread with a spiral structure.

3. The rotary drilling attachment according to claim 1, characterized in that: There are two limiters, which are arranged opposite to each other. The limiters are located on one side of the feed port, and are fixedly connected to a side of the baffle away from the rotary excavator, so that the opposite side walls of the excavation port can respectively abut against the two sides of the limiters.

4. The rotary drilling attachment according to claim 1, characterized in that: The cutter head is located at the excavation mouth, one end of the cutter head is fixedly connected to the cutter disc, and the other end is a blade. The cutter head is tilted, and the end of the cutter head close to the blade is tilted away from the rotary excavation barrel.

5. The rotary drilling attachment according to claim 1, characterized in that: The baffle is hinged to the rotary drilling barrel through a hinge, and the maximum angle between the baffle and the barrel mouth is 60 degrees; one side of the first buckle body and the second buckle body is provided with a sliding matching inclined surface.

6. The rotary drilling attachment according to claim 1, characterized in that: There are penetrating mounting holes at the center of the baffle and the cutter disc, and bolts are provided in the mounting holes. The bolts pass through the mounting holes of the baffle and the cutter disc and are rotatably connected to the mounting holes. A fastener is provided on the threaded sleeve at one end of the bolt near the rotary drilling barrel.

7. The rotary drilling attachment according to claim 1, characterized in that: An ultrasonic rangefinder is fixedly provided on the outer wall of the disc body, and a probe of the ultrasonic rangefinder faces the direction of the barrel mouth; the ultrasonic rangefinder is electrically connected to the rotary hydraulic switch valve through a controller.

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