Pit digging device

Abstract

The invention discloses a pit digging device which comprises a base frame and a lifting guide rail, the lifting guide rail is vertically arranged on the base frame, and a lifting frame is slidably connected to the lifting guide rail; according to the device, the lifting guide rail, the lifting frame and the pit digging frame are arranged, the lifting guide rail drives the lifting frame and the pit digging frame to move, the pit digging frame is driven to move downwards greatly, then the first rotating shaft, the second rotating shaft and the third rotating shaft are arranged, the pit digging frame is driven to rotate, the pit digging frame can move downwards and rotate, pit digging operation is achieved, and follow-up planting operation is facilitated; a sliding sleeve and a rotating part of a second rotating shaft are arranged, and a guide groove formed in the rotating part by utilizing a guide formed by the sliding sleeve is used for driving the second rotating shaft, a third rotating shaft and a pit digging frame to move up and down back and forth, so that the pit digging frame can be driven to move up and down back and forth when the lifting frame does not need to move up and down; and part of soil generated by pit digging is brought out by utilizing the temporary upward movement of the pit digging frame.

Description

Technical Field

[0001] The invention relates to the technical field of forestry, in particular to a pit digging device. Background Art

[0002] In the field of agriculture and forestry, the transplanting of crops such as seedlings, especially the transplanting of larger crops, requires the use of mechanical equipment, such as a pit digger, which is a special machine for quickly digging pits for afforestation and fertilization in mountainous, hilly and gully areas, freeing people from heavy physical labor. It is widely used in afforestation, fruit forests, fences, and fertilizing fruit trees in autumn, etc. However, these equipment are usually large in size, and most of the transplanting of smaller crops is done manually, digging out the original crops, and then digging pits in new locations to transplant the crops. However, this manual method takes a long time to operate, so it is necessary to use relatively small equipment to assist in digging pits to speed up the transplanting efficiency. Most of the existing pit digging equipment is direct digging, which is difficult to dig on slopes, and when encountering harder soil and soil with more impurities such as stones, it is necessary to repeatedly operate the digging, and the digging time is long. The publication number is CN118749387B, which relates to a sapling planting device. Aiming at the problem that the current forestry planting cannot realize the work of a complete set of equipment for efficient and continuous pit digging and planting, the following scheme is proposed, including a main frame, a mobile mechanism is fixed at the bottom of the main frame, and the mobile mechanism includes a mobile frame fixed at the bottom of the main frame, and two mobile crawlers are installed at the bottom of the mobile frame. The top of the main frame is fixed with a horizontally arranged fixed top frame, and a drilling mechanism is arranged at one end of the fixed top frame. The soil extracted from the drilling position is crushed by setting, and the soil passes through the first soil transfer pipe and the second soil transfer pipe. The driving motor inside the soil transfer box fills the soil transported in the soft shaft auger into the planting tube, and the planting tube is placed in the opened hole, and then the soil retaining plate at the bottom is retracted. When the planting tube is lifted upward, the soil and saplings are planted in the opened soil hole. This device directly digs holes, which is difficult to adapt to various terrains, and the digging efficiency is not high. Summary of the invention

[0003] In view of the deficiencies in the prior art, the object of the present invention is to provide a pit digging device which is highly adaptable, practical and reliable.

[0004] To achieve the above-mentioned purpose, the present invention provides a solution as follows: a digging device, comprising a base frame and a lifting guide rail, the lifting guide rail is vertically arranged on the base frame, a lifting frame is slidably connected to the lifting guide rail, a first rotating shaft is rotatably connected to the lifting frame, the first rotating shaft is slidably connected to the second rotating shaft, a sliding sleeve is arranged in the lifting frame, a rotating part is formed with the second rotating shaft, the rotating part slides in the sliding sleeve, the rotating part is connected to a third rotating shaft, a digging frame is arranged on the third rotating shaft, wherein a guide is formed in the sliding sleeve, a guide groove is opened on the outer side wall of the rotating part, and the guide slides in the guide groove to drive the second rotating shaft, the third rotating shaft and the digging frame to move back and forth up and down.

[0005] The beneficial effects of the present invention are as follows: the hole digging effect is good, the device is provided with a lifting guide rail, a lifting frame, and a hole digging frame, and the lifting guide rail is used to drive the lifting frame and the hole digging frame to move, so as to drive the hole digging frame to move downward significantly, and then the first rotating shaft, the second rotating shaft, and the third rotating shaft are provided to drive the hole digging frame to rotate, so that the hole digging frame can move downward and rotate, and the hole digging operation is realized, so as to facilitate the subsequent planting operation, and then the sliding sleeve and the rotating part of the second rotating shaft are provided, and the guide piece formed by the sliding sleeve is used to form a guide groove in the rotating part to realize driving the second rotating shaft, the third rotating shaft, and the hole digging frame to move up and down back and forth, so that the hole digging frame can be driven to move up and down back and forth without the lifting frame moving up and down. In this way, during the hole digging process, the short upward movement of the hole digging frame can be used to bring out part of the soil generated by the hole digging, thereby reducing the resistance generated during the hole digging and improving the quality of the hole digging. The present invention is suitable for various terrains such as hard soil, has strong adaptability, and the overall structure is practical and reliable.

[0006] Furthermore, a first servo motor is arranged on the base frame, the first servo motor is connected to a first screw rod, and the first screw rod is threadedly connected to the lifting frame. After the present invention adopts the above structure, the lifting frame can be driven to move up and down.

[0007] Furthermore, a driving motor is provided on the lifting frame, and the driving motor is connected to the first rotating shaft. After the present invention adopts the above structure, the first rotating shaft is driven to rotate, thereby driving the second rotating shaft, the third rotating shaft and the pit digging frame to rotate.

[0008] Furthermore, a sliding groove is formed at the end of the first rotating shaft, the sliding groove extends along the length direction of the first rotating shaft, and the sliding groove is used for the second rotating shaft to slide into. After the present invention adopts the above structure, the second rotating shaft can move up and down relative to the first rotating shaft.

[0009] Further, clamping grooves are respectively formed on the left and right sides of the sliding groove, the clamping grooves extend along the length direction of the sliding groove, clamping blocks are respectively formed on the left and right sides of the second rotating shaft, the clamping blocks extend along the length direction of the second rotating shaft, and one of the clamping blocks is inserted into one of the clamping grooves. After the present invention adopts the above structure, the first rotating shaft drives the second rotating shaft to rotate through the cooperation of the clamping block and the clamping groove.

[0010] Further, the guiding groove is divided into a first guiding groove and a second guiding groove. The first guiding groove and the second guiding groove are respectively in a spiral structure, the first guiding groove and the second guiding groove are symmetrically arranged left and right, the first guiding groove and the second guiding groove respectively extend along the length direction of the rotating part, the first guiding groove and the second guiding groove are staggeredly arranged, the front end of the first guiding groove is connected to the front end of the second guiding groove, the rear end of the first guiding groove is connected to the rear end of the second guiding groove, and the guiding element slides in the first guiding groove or the second guiding groove. After the present invention adopts the above structure, the rotating part is guided to move back and forth up and down, so that the second rotating shaft, the third rotating shaft and the digging frame move up and down.

[0011] Further, the digging frame is in a spiral structure and extends along the length direction of the third rotating shaft. After the present invention adopts the above structure, soil is dug out.

[0012] Further, an extending opening is formed at the bottom of the base frame, the extending opening is located directly below the digging frame, and the extending opening is used for the digging frame to pass through downward.

[0013] Further, a plurality of universal wheels are rotatably connected to the bottom of the base frame. After the present invention adopts the above structure, the base frame can be moved on the ground.

[0014] Further, adjusting seats are respectively arranged on the left and right sides of the bottom of the base frame, each adjusting seat is hinged with a rotating seat so that the rotating seat can swing back and forth, and two positioning pins are arranged on each rotating seat. The positioning pins are used for inserting into the ground to limit the movement of the base frame. After the present invention adopts the above structure, the base frame is driven to swing back and forth, so that on an inclined slope surface, the base frame can be set vertically, so as to dig a hole in the ground of the slope surface. At the same time, through the positioning pins, the ground can be inserted into the ground to limit the movement of the base frame.

[0015] Further, a plurality of first adjusting holes are formed in the adjusting seat, the plurality of first adjusting holes are arranged at intervals in an arc shape, a second adjusting hole is formed in the rotating seat, and the rotation of the rotating seat is restricted by sequentially passing a first pin through the second adjusting hole and the first adjusting hole. After the present invention adopts the above structure, the rotating seat and the adjusting seat are locked.

[0016] Further, adjusting sleeves are respectively arranged on the front and rear sides of the rotating seat, and the positioning pins are slidably connected in the adjusting sleeves. After the present invention adopts the above structure, the positioning pins can be restricted so that the positioning pins can only move up and down.

[0017] Further, the adjusting sleeve is provided with a first fixing hole, the positioning pin is formed with an adjusting portion, the adjusting portion extends along the length direction of the positioning pin, the adjusting portion is provided with a plurality of second fixing holes, and the plurality of second fixing holes are arranged at intervals in sequence along the length direction of the positioning pin. The second pin is successively passed through the first fixing hole and the second fixing hole to restrict the positioning pin from continuing to move. After the present invention adopts the above structure, the depth of the positioning pin inserted into the ground can be controlled.

[0018] Further, the positioning pin is formed with a limiting boss, the limiting boss is located below the adjusting portion, the diameter of the limiting boss is larger than the inner diameter of the adjusting sleeve, and the limiting boss abuts against the bottom of the adjusting sleeve to restrict the positioning pin from withdrawing upward from the adjusting sleeve. After the present invention adopts the above structure, the positioning pin is restricted from withdrawing upward from the adjusting sleeve.

[0019] Further, two handles are arranged on the top of the base frame, and the two handles are arranged at intervals left and right. After the present invention adopts the above structure, by arranging the handles, it is convenient for the staff to push the base frame to move through the handles. Description of the Drawings

[0020] Figure 1 is the three-dimensional overall structure of the present invention Figure One .

[0021] Figure 2 is the three-dimensional overall structure of the present invention Figure Two .

[0022] Figure 3 is Figure 2 the enlarged view at A in

[0023] Figure 4 is the cross-sectional view of the present invention.

[0024] Figure 5 is Figure 4 the enlarged view at A in

[0025] Figure 6 is the three-dimensional structure of the first rotating shaft, the second rotating shaft, the third rotating shaft and the digging frame of the present invention Figure One .

[0026] Figure 7 is the three-dimensional structure of the first rotating shaft, the second rotating shaft, the third rotating shaft and the digging frame of the present invention Figure Two .

[0027] Figure 8 is Figure 7 the enlarged view at C in

[0028] Figure 9 This is the three-dimensional view of the second rotating shaft of the present invention.

[0029] Among them, 1 is the base frame, 11 is the extension opening, 12 is the universal wheel, 13 is the adjustment seat, 131 is the first adjustment hole, 132 is the first pin, 14 is the rotating seat, 141 is the second adjustment hole, 15 is the adjustment sleeve, 151 is the first fixing hole, 152 is the second pin, 16 is the positioning pin, 161 is the adjustment part, 162 is the second fixing hole, 163 is the limiting boss, 17 is the handle, 21 is the lifting guide rail, 211 is the lifting frame, 22 is the first servo motor, 221 is the first screw rod, 23 is the first rotating shaft, 231 is the sliding groove, 232 is the clamping groove, 24 is the second rotating shaft, 241 is the clamping block, 242 is the rotating part, 243 is the guiding groove, 2431 is the first guiding groove, 2432 is the second guiding groove, 25 is the third rotating shaft, 26 is the digging frame, 27 is the sliding sleeve, 271 is the guiding element, 28 is the driving motor. Detailed implementation manners

[0030] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0032] See attached Figure 1 to attached Figure 9As shown in the figure, a pit-digging device includes a base frame 1 and a lifting guide rail 21. The lifting guide rail 21 is vertically arranged on the base frame 1. A lifting frame 211 is slidably connected to the lifting guide rail 21. A first rotating shaft 23 is rotatably connected to the lifting frame 211. A second rotating shaft 24 is slidably connected to the first rotating shaft 23. A sliding sleeve 27 is arranged inside the lifting frame 211. A rotating part 242 is formed on the second rotating shaft 24. The rotating part 242 slides inside the sliding sleeve 27. The rotating part 242 is connected to a third rotating shaft 25. A pit-digging frame 26 is arranged on the third rotating shaft 25. Among them, guiding elements are formed inside the sliding sleeve 27, and guiding grooves 243 are formed on the outer side wall of the rotating part 242. The guiding elements slide inside the guiding grooves 243 to drive the second rotating shaft 24, the third rotating shaft 25, and the pit-digging frame 26 to move up and down back and forth.

[0033] In this embodiment, a first servo motor 22 is arranged on the base frame 1. The first servo motor 22 is connected to a first screw rod 221. The first screw rod 221 is threadedly connected to the lifting frame 211.

[0034] In this embodiment, a driving motor 28 is arranged on the lifting frame 211. The driving motor 28 is connected to the first rotating shaft 23. In this way, the driving motor 28 can drive the third rotating shaft 25 and the pit-digging frame 26 to rotate through the first rotating shaft 23. A conventional rotating shaft sleeve is arranged on the lifting frame 211, and the first rotating shaft 23 is arranged inside the rotating sleeve. In this way, the rotation stability of the first rotating shaft 23 can be improved.

[0035] In this embodiment, a sliding groove 231 is formed at the end of the first rotating shaft 23. The sliding groove 231 extends along the length direction of the first rotating shaft 23. The sliding groove 231 is used for the second rotating shaft 24 to slide and insert.

[0036] In this embodiment, clamping grooves 232 are respectively formed on the left and right sides of the sliding groove 231. The clamping grooves 232 extend along the length direction of the sliding groove 231. Clamping blocks 241 are respectively formed on the left and right sides of the second rotating shaft 24. The clamping blocks 241 extend along the length direction of the second rotating shaft 24. One clamping block 241 is inserted into one clamping groove 232. The guiding groove 243 is divided into a first guiding groove 2431 and a second guiding groove 2432. The first guiding groove 2431 and the second guiding groove 2432 are respectively in a spiral structure. The first guiding groove 2431 and the second guiding groove 2432 are symmetrically arranged left and right. The first guiding groove 2431 and the second guiding groove 2432 respectively extend along the length direction of the rotating part 242. The first guiding groove 2431 and the second guiding groove 2432 are staggered. The front end of the first guiding groove 2431 is connected to the front end of the second guiding groove 2432. The rear end of the first guiding groove 2431 is connected to the rear end of the second guiding groove 2432. The guiding element slides inside the first guiding groove 2431 or the second guiding groove 2432.

[0037] Among them, although the first guide groove 2431 and the second guide groove 2432 are symmetrically arranged left and right, the first guide groove 2431 and the second guide groove 2432 will intersect with each other. However, during the process of the guide post 271 sliding in the first guide groove 2431, it will not enter the second guide groove 2432 from the first guide groove 2431, unless the guide post 271 is located at the rear end of the first guide groove 2431. Similarly, during the process of the guide post 271 sliding in the second guide groove 2432, it will not enter the first guide groove 2431 from the second guide groove 2432, unless the guide post 271 is located at the front end of the second guide groove 2432.

[0038] In this embodiment, the pit-digging frame 26 has a spiral structure, and the pit-digging frame 26 extends along the length direction of the third rotating shaft 25.

[0039] In this embodiment, a plurality of universal wheels 12 are rotatably connected to the bottom of the base frame 1. An extension opening 11 is formed at the bottom of the base frame 1, and the extension opening 11 is located directly below the pit-digging frame 26. The extension opening 11 is used for the pit-digging frame 26 to pass through downward.

[0040] In this embodiment, adjusting seats 13 are respectively arranged on the left and right sides of the bottom of the base frame 1. Each adjusting seat 13 is hinged with a rotating seat 14 so that the rotating seat 14 can swing back and forth. Two positioning pins 16 are arranged on each rotating seat 14, and the positioning pins 16 are used to insert into the ground to limit the movement of the base frame 1; a plurality of first adjusting holes 131 are formed in the adjusting seat 13, and the plurality of first adjusting holes 131 are arranged at intervals in an arc shape. A second adjusting hole 141 is formed in the rotating seat 14, and the second adjusting hole 141 and the first adjusting holes 131 are sequentially penetrated by a first pin 132 to limit the continuous rotation of the rotating seat 14.

[0041] Among them, the front and back swing angle of the base frame 1 in this embodiment is -90 to 90°, preferably -45 to 45°.

[0042] In this embodiment, adjusting sleeves 15 are respectively arranged on the front and back sides of the rotating seat 14, and the positioning pins 16 are slidably connected in the adjusting sleeves 15; a first fixing hole 151 is formed in the adjusting sleeve 15, an adjusting portion 161 is formed on the positioning pin 16, the adjusting portion 161 extends along the length direction of the positioning pin 16, and a plurality of second fixing holes 162 are formed in the adjusting portion 161. The plurality of second fixing holes 162 are arranged at intervals along the length direction of the positioning pin 16. The continuous movement of the positioning pin 16 is limited by sequentially passing a second pin 152 through the first fixing hole 151 and the second fixing holes 162. The plurality of second fixing holes 162 are arranged at intervals along the length direction of the positioning pin 16. The continuous movement of the positioning pin 16 is limited by sequentially passing a second pin 152 through the first fixing hole 151 and the second fixing holes 162.

[0043] Among them, the positioning pin 16 is formed with a limiting boss 163. The limiting boss 163 is located on the lower side of the adjusting part 161. The diameter of the limiting boss 163 is larger than the inner diameter of the adjusting sleeve 15. The limiting boss 163 abuts against the bottom of the adjusting sleeve 15 to limit the positioning pin 16 from withdrawing upward from the adjusting sleeve 15.

[0044] In this embodiment, two handles 17 are arranged on the top of the base frame 1, and the two handles 17 are arranged at intervals left and right.

[0045] In this embodiment, the specific operation process is as follows: When at the site where a pit needs to be dug, push the positioning pins 16 upward respectively until the second fixing holes 162 at the lowermost side of each positioning pin 16 are aligned with the first fixing holes 151 of the adjusting sleeve 15 connected to the positioning pin 16, so that the bottom end height of the positioning pin 16 is higher than the bottom of the universal wheel 12. Thus, when the universal wheel 12 rolls on the ground, each positioning pin 16 will not be inserted into the ground, increasing the resistance to the movement of the base frame 1. Then, sequentially insert the second pin 152 through the first fixing hole 151 and the second fixing hole 162 to limit the positioning pin 16 from moving downward continuously; among them, when the second fixing hole 162 at the lowermost side of the positioning pin 16 is aligned with the first fixing hole 151 of the adjusting sleeve 15 connected to the positioning pin 16, the limiting boss 163 of the positioning pin 16 just abuts against the bottom of the adjusting sleeve 15.

[0046] At this time, the base frame 1 of this embodiment can be pushed to move by holding the two handles 17 and then using the multiple universal wheels 12 until it moves to the position where a pit needs to be dug.

[0047] When the position for digging a pit is a horizontal plane, the base frame 1 of this embodiment is approximately in a vertical state. Then, the second pins 152 can be pulled out, so that each positioning pin 16 automatically moves downward until the bottom end of the positioning pin 16 touches the ground. Then, use a hammer to hammer the top of the positioning pin 16 downward to push the positioning pin 16 downward, so that the positioning pin 16 is inserted into the soil on the ground, and continue to hammer until the positioning pin 16 is inserted to the set depth, so that the corresponding second fixing hole 162 is aligned with the first fixing hole 151 of the adjusting sleeve 15, and then the second pins 152 are sequentially inserted through the first fixing hole 151 and the second fixing hole 162 to limit the up and down movement of the positioning pin 16.

[0048] S1. After each positioning pin 16 is inserted downward into the soil on the ground to fix the base frame 1 of this embodiment, at this time, the first servo motor 22 can be started respectively. The first servo motor 22 drives the first screw rod 221 to rotate, so as to drive the lifting frame 211 and the digging frame 26 to move downward until the digging frame 26 moves downward through the extension opening 11 and then continues to move downward until the digging frame 26 abuts and presses the soil on the ground. Then, start the drive motor 28 and continue to control the first servo motor 22 to rotate. The first servo motor 22 continues to drive the first screw rod 221 to rotate, so as to continue to drive the lifting frame 211 and the digging frame 26 to slowly move downward. Synchronously, the drive motor 28 drives the first rotating shaft 23 to rotate. Due to the connection relationship that the first rotating shaft 23 is respectively connected to the two clamping slots 232 through the two clamping blocks 241, the first rotating shaft 23 rotates to drive the second rotating shaft 24 to rotate, and the second rotating shaft 24 drives the rotating part 242, the third rotating shaft 25 and the digging frame 26 to rotate. In this way, in cooperation with the first servo motor 22 driving the digging frame 26 to move downward and the spiral structure of the digging frame 26, the digging frame 26 gradually moves downward and digs out the soil.

[0049] Among them, due to the provision of the sliding sleeve 27 and the formation of guiding elements in the sliding sleeve 27. At the same time, since the rotating part 242 slides in the sliding sleeve 27, and the outer side wall of the rotating part 242 is formed with a first guide groove 2431 and a second guide groove 2432. Since the first guide groove 2431 and the second guide groove 2432 are symmetrically arranged left and right, and both the first guide groove 2431 and the second guide groove 2432 are in a spiral structure, when the rotating part 242 rotates, the guiding element slides along the first guide groove 2431, and the first guide groove 2431 extends along the length direction of the rotating part 242. In cooperation with the up and down sliding of the second rotating shaft 24 in the sliding groove 231 of the first rotating shaft 23, the second rotating shaft 24 can move up and down relative to the first rotating shaft 23, and the rotating part 242 can also move downward when rotating, thereby driving the digging frame 26 to move downward. In this way, in addition to the first servo motor 22 being able to drive the digging frame 26 to move downward, the drive motor 28 drives the first rotating shaft 23 and the digging frame 26 to rotate, and can also drive the digging frame 26 to move downward, so as to increase the acting force of the digging frame 26 moving downward and accelerate the digging process.

[0050] S2. The operator observes the process of the rotation part 242 moving. When the guiding part moves from the front end of the first guiding groove 2431 to the rear end of the first guiding groove 2431, the rotation part 242 drives the digging frame 26 to move down to the maximum stroke during a single downward movement. Stop the first servo motor 22. The first driving motor 28 drives the first rotating shaft 23 and the digging frame 26 to continue rotating, so that the guiding part enters the rear end of the second guiding groove 2432 from the rear end of the first guiding groove 2431. Then the first driving motor 28 drives the first rotating shaft 23 and the digging frame 26 to continue rotating, so that the guiding part slides in the second guiding groove 2432. The guiding part moves from the rear end of the second guiding groove 2432 to the front end of the second guiding groove 2432, thereby driving the rotation part 242, the third rotating shaft 25, the digging frame 26, and the second rotating shaft 24 to move upward. In this way, the soil dug out by the digging frame 26 can be driven to move upward, and part of the dug soil can be taken out until the guiding part moves to the front end of the second guiding groove 2432. The rotation part 242 drives the digging frame 26 to move up to the maximum stroke during a single upward movement.

[0051] S3. At this time, control the first servo motor 22 to start again, repeat S1 and S2, and control the driving motor 28 to rotate continuously to control the up and down movement of the digging frame 26. When the digging frame 26 moves down in cooperation with the first guiding groove 2431 through the guiding part, the first servo motor 22 also drives the lifting frame 211 and the digging frame 26 to move down synchronously. When the digging frame 26 moves up in cooperation with the second guiding groove 2432 through the guiding part, the first servo motor 22 stops working, so that the lifting frame 211 stops moving until the digging frame 26 digs down to the set depth.

[0052] S4. After the digging is completed, control the first servo motor 22 to drive the first screw rod 221 to rotate in the reverse direction to drive the lifting frame 211 and the digging frame 26 to move upward and reset. After the lifting frame 211 and the digging frame 26 are reset, pull out each second pin 152, then pull out each positioning nail 16 from the soil on the ground, and push the positioning nail 16 upward until the second fixing hole 162 at the lowermost side of each positioning nail 16 is aligned with the first fixing hole 151 of the adjusting sleeve 15 connected to the positioning nail 16, so that the bottom height of the positioning nail 16 is higher than the bottom of the universal wheel 12. Then, sequentially pass the second pin 152 through the first fixing hole 151 and the second fixing hole 162 to limit the downward movement of the positioning nail 16. At this time, the base frame 1 of this embodiment can be pushed away, and subsequent planting operations can be continued.

[0053] In this embodiment, by digging pits in the above manner, the first servo motor 22 and the drive motor 28 can respectively drive the pit-digging frame 26 to move downward, which can increase the acting force for digging pits, and is applicable to digging pits in the ground with relatively hard soil. At the same time, the drive motor 28 can drive the pit-digging frame 26 to move up and down back and forth. Also, when encountering impurities such as small stones that hinder pit-digging during pit-digging, by utilizing the characteristic that the drive motor 28 drives the pit-digging frame 26 to move up and down back and forth, the impurities can be taken out during the pit-digging process, reducing the problem that the drill bit or motor of the traditional pit-digging machine is prone to damage when encountering the above situation. This embodiment can improve the service life of the entire device and has a wider application range.

[0054] When it is necessary to dig pits on a slope with a certain inclination angle, first push each positioning pin 16 of this embodiment upward until the bottom end height of each positioning pin 16 is higher than the bottom of the universal wheel 12, and lock the positioning pin 16 through the second pin 152. Then, cooperate with multiple universal wheels 12, push the base frame 1 of this embodiment to the position where pits need to be dug on the slope, then pull out each second pin 152, and push each positioning pin 16 into the soil on the ground. After inserting to the set depth, re-insert each second pin 152 to lock each positioning pin 16 and limit the movement of the positioning pin 16.

[0055] At this time, when it is necessary to dig pits on the slope, the base frame 1 and the pit-digging frame 26 need to be in the vertical direction so that the planted crops will not be perpendicular to the slope surface and will be in the vertical state as much as possible. Therefore, it is necessary to pull out the two first pins 132. Since the adjusting seat 13 is hinged to the rotating seat 14, push the base frame 1 and the two adjusting seats 13 to swing back and forth until the base frame 1 swings to the vertical, making the angle between the base frame 1 and the rotating seat 14 an included angle, and aligning the second adjusting holes 141 of the rotating seat 14 with the corresponding second adjusting holes 141. Then, re-insert the first pins 132 through the second adjusting holes 141 and the first adjusting holes 131 in sequence to lock the adjusting seat 13 and the rotating seat 14 and limit the forward and backward swing of the adjusting seat 13.

[0056] After locking the adjusting seat 13, keep the base frame 1 and the pit-digging frame 26 in the vertical direction, and then the first servo motor 22 and the drive motor 28 can be started respectively, and according to S1, S2, S3, the soil on the slope can be dug.

[0057] After the pit-digging is completed, control the first servo motor 22 to drive the first screw rod 221 to rotate reversely, so as to drive the lifting frame 211 and the pit-digging frame 26 to move upward and reset. After the lifting frame 211 and the pit-digging frame 26 are reset, first pull out the two first pins 132, and then swing the base frame 1 and the adjusting seat 13 back and forth until the second adjusting hole 141 of the rotating seat 14 is aligned with the first adjusting hole 131 at the center of the adjusting seat 13 to reset the rotating seat 14, and the base frame 1 is perpendicular to the slope surface. Then, reinsert the first pin 132 through the second adjusting hole 141 and the first adjusting hole 131 in sequence to lock the adjusting seat 13 and the rotating seat 14.

[0058] Pull out each second pin 152, then pull out each positioning pin 16 from the soil on the ground, and push the positioning pin 16 upward until the second fixing hole 162 at the lowermost side of each positioning pin 16 is aligned with the first fixing hole 151 of the adjusting sleeve 15 connected to the positioning pin 16, so that the bottom end height of the positioning pin 16 is higher than the bottom of the universal wheel 12. Then, insert the second pin 152 through the first fixing hole 151 and the second fixing hole 162 in sequence to limit the downward movement of the positioning pin 16. At this time, the base frame 1 of this embodiment can be pushed away, and subsequent planting operations can be continued.

[0059] The above-described embodiments are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Any person skilled in the art can make more possible changes and modifications to the technical solution of the present invention or modify it into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the present invention. Therefore, all equivalent changes made according to the idea of the present invention without departing from the content of the technical solution of the present invention shall be covered by the protection scope of the present invention.

Claims

1. A pit digging device, comprising a base frame and a lifting guide rail, characterized in that: The lifting guide rail is vertically arranged on the base frame, and a lifting frame is slidably connected to the lifting guide rail, and a first rotating shaft is rotatably connected to the lifting frame, and the first rotating shaft is slidably connected to the second rotating shaft, a sliding sleeve is arranged in the lifting frame, and a rotating part is formed on the second rotating shaft, and the rotating part slides in the sliding sleeve, and the rotating part is connected to the third rotating shaft, and a pit digging frame is arranged on the third rotating shaft, wherein a guide is formed in the sliding sleeve, and a guide groove is opened on the outer side wall of the rotating part, and the guide slides in the guide groove to drive the second rotating shaft, the third rotating shaft and the pit digging frame to move back and forth up and down.

2. A pit digging device according to claim 1, characterized in that: The base frame is provided with a first servo motor, the first servo motor is connected with a first screw rod, and the first screw rod is threadedly connected with the lifting frame.

3. A pit digging device according to claim 1, characterized in that: The lifting frame is provided with a driving motor, and the driving motor is connected to the first rotating shaft.

4. A pit digging device according to claim 1, characterized in that: A sliding groove is formed at the end of the first rotating shaft. The sliding groove extends along the length direction of the first rotating shaft and is used for the second rotating shaft to be slidably inserted into the sliding groove.

5. A pit digging device according to claim 4, characterized in that: The sliding slot is provided with a locking groove on both sides thereof, and the locking groove extends along the length direction of the sliding slot. The second rotating shaft is provided with a locking block on both sides thereof, and the locking block extends along the length direction of the second rotating shaft. One of the locking blocks is inserted into one of the locking grooves.

6. A pit digging device according to claim 5, characterized in that: The guide groove is divided into a first guide groove and a second guide groove, the first guide groove and the second guide groove are respectively in a spiral structure, the first guide groove and the second guide groove are symmetrically arranged, the first guide groove and the second guide groove respectively extend along the length direction of the rotating part, the first guide groove and the second guide groove are staggered, the front end of the first guide groove is connected to the front end of the second guide groove, the rear end of the first guide groove is connected to the rear end of the second guide groove, and the guide slides in the first guide groove or the second guide groove.

7. A pit digging device according to claim 1, characterized in that: The digging frame is in a spiral structure and extends along the length direction of the third rotating shaft.

8. A pit digging device according to claim 1, characterized in that: The bottom of the base frame is rotatably connected with a plurality of universal wheels.

9. A pit digging device according to claim 1, characterized in that: Adjustment seats are respectively arranged on the left and right sides of the bottom of the base frame, each of the adjustment seats is hinged with a rotating seat, and each of the rotating seats is provided with two positioning nails, and the positioning nails are used to be inserted into the ground to limit the movement of the base frame.

10. A pit digging device according to claim 9, characterized in that: The adjusting seat is provided with a plurality of first adjusting holes, which are arranged in an arc shape and spaced apart in sequence. The rotating seat is provided with a second adjusting hole, and the first latch is passed through the second adjusting hole and the first adjusting hole in sequence to limit the rotating seat from further rotation.

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