Pit digging equipment for blueberry planting

Abstract

The invention discloses pit digging equipment for blueberry planting, and relates to the technical field of planting pit digging, the pit digging equipment comprises a frame walking along ridges, and one side of the frame is provided with a lifting mechanism. According to the pit digging equipment for blueberry planting, the pit digging mechanism on the front side of the frame is driven by the lifting mechanism to conduct soil taking and pit digging on a blueberry planting area, after pits are dug, a support assembly of the soil loosening mechanism is inserted into the previous dug pit, and a telescopic rod drives the support assembly to drive a sliding plate to move upwards and drive a fixing plate to be opened; therefore, the bent plates and the soil loosening rods are gradually inserted into the inner wall of the pit to form a soil loosening gap, the opened fixing plate is used for carrying out anti-collapse fitting on the inner wall of the pit, and then the lifting mechanism is used for driving the pit digging mechanism and the soil loosening mechanism to lift in opposite directions; the soil loosening mechanism with the rotatable angle can perform multi-angle anti-collapse soil loosening operation on each dug pit, and it is guaranteed that blueberry roots have the wide transverse distribution growth range and the good ventilation growth effect.

Description

Technical Field

[0001] This invention relates to the field of planting hole digging technology, specifically to a hole digging device for blueberry planting. Background Technology

[0002] When planting blueberries, transplanting pits for planting blueberry plants need to be dug in advance on the field ridges. The planting pits are usually dug by manpower or mechanical equipment. The use of mechanical equipment for digging pits mainly involves using a spiral drill to drill into the designated field ridges. This not only drills out the pits at the designated locations, but also removes the soil from the pits.

[0003] Blueberry seedlings have a fibrous root system without a distinct taproot. The root system is relatively weak and has limited absorption capacity. Spatially, blueberries are shallow-rooted plants, with their roots mainly concentrated in the topsoil layer. They rely entirely on a large number of fine capillary roots and fibrous roots to absorb water and nutrients.

[0004] In existing technologies, pits are dug at intervals in the planting area of ​​blueberry transplanting fields using pit-digging equipment. Conventional pit digging involves using a spiral drill to extract soil from the ridges, resulting in pits of uniform diameter. However, there is a significant difference in compaction between the inner wall of the pit and the subsequent covering fertilizer and loose soil. When blueberry seedlings are planted in these pits, due to their shallow root system, they mainly rely on shallow lateral growth to explore the soil. This causes the roots of the blueberry seedlings to extend mainly between the subsequently buried fertilizer and loose soil, making it difficult for them to break through the soil and extend into the inner wall of the pit. Consequently, this easily restricts the distributed growth and aeration of the blueberry seedling roots. Summary of the Invention

[0005] The purpose of this invention is to provide a hole-digging device for blueberry cultivation, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hole-digging device for blueberry planting, comprising a frame that travels along the field ridges, a lifting mechanism provided on one side of the frame, uprights symmetrically installed on the side of the frame near the lifting mechanism, a hole-digging mechanism provided on the front side of the frame, the hole-digging mechanism comprising a front bracket mounted on a chain on the front side of the frame, the front bracket sliding longitudinally along the uprights, a diesel engine mounted on the front bracket, and a auger drill connected to the bottom output shaft of the diesel engine;

[0007] The rear side of the frame is provided with a soil loosening mechanism, which includes a rear bracket installed on the chain on the rear side of the frame. The rear bracket slides longitudinally along the column. The rear bracket is provided with an adjustable frame that can slide back and forth. Below the adjustable frame is a bracket assembly that can be reset and opened.

[0008] The lifting mechanism drives the digging mechanism and the loosening mechanism to move in opposite directions, so that the loosening mechanism extends the lowered support assembly into the pit dug by the auger, and the resettable support assembly loosens the soil on the inner wall of the pit to prevent collapse.

[0009] Preferably, the lifting mechanism includes sprockets movably connected to the frame, with chains wound around the two sprockets, and a hand-cranked drive assembly mounted on the top of the frame to drive one of the sprockets to rotate.

[0010] Preferably, a telescopic rod and a reducer are installed inside the adjusting frame. A motor is connected to the input end of the reducer. The bracket assembly includes a sleeve that extends longitudinally through the output end of the reducer. The central guide rod of the telescopic rod is slidably inserted into the sleeve. A battery that supplies power to the telescopic rod and the motor is mounted on the outside of the rear bracket.

[0011] Preferably, the upper and lower ends of the outer side of the sleeve are fitted with collars, and magnetic blocks slide on the inner side of the collars;

[0012] The outer wall of the central guide rod of the telescopic rod is provided with a slot for magnetic attraction and insertion with the magnetic block, and the surface of the sleeve is provided with a slide rail parallel to the central axis, and the slide rail and the magnetic block are slidably connected.

[0013] A push-pull plate is hinged at an equal angle to the outer side of the collar, and a toothed disc is embedded at the end of the push-pull plate away from the collar.

[0014] Preferably, a limiting plate is coaxially mounted on the upper end of the sleeve, and vertical rails with equal included angles are slidable on the limiting plate, with a push-pull plate at the end away from the collar being movably connected to the vertical rails.

[0015] Preferably, a longitudinal groove is provided in the middle of the vertical rail, a toothed seat is slidably connected in the longitudinal groove, and a traction arm is provided between the side of the toothed seat and the collar located at the bottom of the sleeve.

[0016] The upper end of the traction arm is hinged to the tooth seat, and the lower end of the traction arm is hinged to one end of the push-pull plate away from the tooth disc. The collar located at the bottom of the sleeve can drive the tooth seat to move along the longitudinal slide groove through the traction arm during lifting.

[0017] A sliding plate and a fixing plate are provided on the side of the vertical rail away from the sleeve. Rollers that are staggered vertically are connected through the upper end of the vertical rail and the upper end of the fixing plate. The staggered rollers roll and abut along the upper and lower sides of the limiting plate. The upper end of the fixing plate is connected to the vertical rail through the rollers.

[0018] Preferably, the surface of the vertical rail near the slide plate has a notch, and the surface of the slide plate near the vertical rail has a protrusion that slides and engages with the notch. The slide plate can slide longitudinally along one side of the vertical rail. The surface of the slide plate has a rack that meshes with the toothed disc. The bottom two sides of the slide plate are fixed with curved plates, and the upper end of the fixed plate is slidably connected to the upper end of the slide plate.

[0019] Preferably, a toothed roller is movably connected to the inner wall of the fixing plate, a soil loosening rod is installed on the outer side of the toothed roller, and an inner cavity for receiving the soil loosening rod is opened on the outer wall of the fixing plate;

[0020] The slide plate has a longitudinally arranged strip-shaped opening on the surface near the toothed roller. The toothed roller passes through the strip-shaped opening and engages with the toothed seat. The toothed seat, which moves up and down, can drive the toothed roller to rotate the loosening rod at an angle.

[0021] Preferably, a guide rod is installed on the upper side of the rear bracket, and the guide rod pushes the adjustment frame laterally through push springs sleeved on both sides.

[0022] Preferably, crossbars are installed on both sides of the front bracket, one end of the crossbar is connected to a plate, and the plate can be vertically raised and lowered along the side frame at the bottom of the frame. The upper end of the plate is reserved with a strip hole for sliding with the crossbar.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: The blueberry planting hole-digging device uses a lifting mechanism to drive the hole-digging mechanism on the front side of the frame to dig holes in the blueberry planting area. After digging the holes, the support assembly of the loosening mechanism is inserted into the previously dug hole. The telescopic rod drives the support assembly to move the sliding plate upward and the fixed plate open, so that several curved plates and loosening rods are gradually inserted into the inner wall of the hole to open the loosening gaps. The opened fixed plate then prevents the inner wall of the hole from collapsing. Furthermore, the lifting mechanism drives the hole-digging mechanism and the loosening mechanism to lift and lower in opposite directions, so that the rotatable loosening mechanism can perform multi-angle anti-collapse loosening operations on each dug hole, ensuring that the blueberry root system has a wide lateral distribution growth range and good aeration growth effect. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the hole-digging device of the present invention moving and digging holes on the field ridges;

[0025] Figure 2 This is a three-dimensional structural diagram of the pit-digging device of the present invention;

[0026] Figure 3 This is a three-dimensional cross-sectional diagram of the soil loosening mechanism of the present invention inserted into the pit;

[0027] Figure 4 This is a schematic diagram of the main structure of the soil loosening mechanism of the present invention inserted into the pit;

[0028] Figure 5 This is a schematic diagram of the first three-dimensional structure of the linkage between the bracket assembly, vertical rail, sliding plate and fixing plate of the present invention;

[0029] Figure 6 This is a schematic diagram of the second three-dimensional structure of the linkage between the bracket assembly, vertical rail, sliding plate and fixing plate of the present invention;

[0030] Figure 7 This is a first three-dimensional exploded structural diagram of the linkage between the support assembly, vertical rail, sliding plate and fixing plate of the present invention;

[0031] Figure 8 This is a second three-dimensional exploded structural diagram of the linkage between the support assembly, vertical rail, sliding plate and fixing plate of the present invention;

[0032] Figure 9 This is a three-dimensional cross-sectional structural diagram of the support assembly of the present invention;

[0033] Figure 10 This is a three-dimensional structural diagram of the linkage between the vertical rail, sliding plate, and fixed plate of the present invention.

[0034] In the diagram: 1. Frame; 2. Lifting mechanism; 201. Sprocket; 202. Chain; 203. Hand-cranked drive assembly; 3. Column; 4. Digging mechanism; 401. Front bracket; 402. Diesel engine; 403. Auger; 5. Soil loosening mechanism; 501. Rear bracket; 502. Adjusting frame; 5021. Telescopic rod; 5022. Reducer; 5023. Motor; 5024. Guide rod; 5025. Push spring 503, Support assembly; 5031, Sleeve; 5032, Limiting plate; 5033, Collar; 5034, Magnetic block; 5035, Push-pull plate; 5036, Gear plate; 504, Vertical rail; 5041, Gear seat; 5042, Traction arm; 505, Slide plate; 5051, Rack; 5052, Curved plate; 506, Fixing plate; 5061, Gear roller; 5062, Loosening rod; 6, Crossbar; 7, Insert plate. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figure 1 and Figure 2The present invention provides a technical solution: a hole-digging device for blueberry planting, including a frame 1 that travels along the field ridges, a lifting mechanism 2 provided on one side of the frame 1, the lifting mechanism 2 including a sprocket 201 movably connected to the frame 1, a chain 202 wound around the two sprockets 201, a hand-cranked drive assembly 203 installed on the top of the frame 1 to drive one of the sprockets 201 to rotate, the hand-cranked drive assembly 203 including a reduction drive box installed on the top of the frame 1, the reduction drive box is driven by a worm gear to rotate a worm wheel to achieve speed reduction transmission, a handwheel is connected to the worm end of the reduction drive box, and the worm wheel end of the reduction drive box is connected to the central shaft of the sprocket 201.

[0037] In this embodiment, the worm gear and worm wheel in the reduction drive box are engaged by the handwheel, thereby causing the worm wheel to drive the sprocket 201 on the top of the frame 1 to rotate. At this time, the sprocket 201 can drive the chain 202 to run. The reduction drive box can ensure that the lifting mechanism 2 can lift with less effort, and the worm gear driving the worm wheel to rotate has a self-locking effect. This is the prior art and will not be described in detail here.

[0038] Please see Figure 1 and Figure 2 The frame 1 has uprights 3 symmetrically installed on one side near the lifting mechanism 2. The front side of the frame 1 is provided with a digging mechanism 4. The digging mechanism 4 includes a front bracket 401 installed on the chain 202 on the front side of the frame 1. The front bracket 401 slides longitudinally along the uprights 3. A diesel engine 402 is installed on the front bracket 401. A spiral drill 403 is connected to the bottom output shaft of the diesel engine 402.

[0039] In this embodiment, the lifting mechanism 2 is used to drive the chain 202 on the front side of the frame 1 to move longitudinally up and down. The chain 202 will drive the front bracket 401 to slide longitudinally along the column 3. At this time, the front bracket 401 will drive the diesel engine 402 and the auger 403 to move up and down. When the diesel engine 402 is started and running, the diesel engine 402 will drive the auger 403 to rotate. Thus, during the downward movement, the front bracket 401 will drive the auger 403 to dig a hole and remove soil at the designated location. Conversely, during the upward movement, the front bracket 401 will drive the auger 403 to move upward and get out of the excavated hole.

[0040] Please see Figures 1-3 A soil loosening mechanism 5 is provided on the rear side of the frame 1. The soil loosening mechanism 5 includes a rear bracket 501 installed on the chain 202 on the rear side of the frame 1. The rear bracket 501 slides longitudinally along the column 3. An adjustable frame 502 that can slide back and forth is provided on the rear bracket 501. A resetable and expandable bracket assembly 503 is provided below the adjustable frame 502.

[0041] In this embodiment, when the lifting mechanism 2 is operated to drive the front bracket 401 on the front side of the frame 1 to move vertically, the rear bracket 501 driven by the chain 202 on the rear side of the frame 1 will move in opposite directions to the front bracket 401. At this time, the rear bracket 501 will drive the adjustment frame 502 and the bracket assembly 503 to move up and down.

[0042] Therefore, by using the lifting mechanism 2 to drive the digging mechanism 4 and the loosening mechanism 5 to rise and fall in opposite directions, the loosening mechanism 5 extends the downward-moving support assembly 503 into the pit dug by the previous auger 403, so that the repositionable and expandable support assembly 503 loosens the soil on the inner wall of the pit to prevent collapse.

[0043] Please see Figures 1-3 The adjusting frame 502 is equipped with a telescopic rod 5021 and a reducer 5022. The input end of the reducer 5022 is connected to a motor 5023. The bracket assembly 503 includes a sleeve 5031 that runs longitudinally through the output end of the reducer 5022. The central guide rod of the telescopic rod 5021 is slidably inserted into the sleeve 5031. A battery that supplies power to the telescopic rod 5021 and the motor 5023 is mounted on the outside of the rear bracket 501. The telescopic rod 5021 is an electric push rod, which facilitates the battery to supply power to the telescopic rod 5021.

[0044] In this embodiment, when the battery supplies power to the telescopic rod 5021 and the motor 5023, the telescopic rod 5021 can extend and retract to drive the central guide rod to move up and down along the sleeve 5031. When the motor 5023 drives the reducer 5022, the reducer 5022 can drive the sleeve 5031 to rotate, thereby using the sleeve 5031 to drive the bracket assembly 503 to rotate.

[0045] Please see Figures 5-9 The upper and lower ends of the outer side of the sleeve 5031 are fitted with collars 5033, and a magnetic block 5034 slides on the inner side of the collar 5033. The outer wall of the central guide rod of the telescopic rod 5021 is provided with a slot for magnetically engaging with the magnetic block 5034. The surface of the sleeve 5031 is provided with a slide rail parallel to the central axis, and the slide rail and the magnetic block 5034 are slidably connected. A push-pull plate 5035 is hinged at an equal angle to the outer side of the collar 5033, and a toothed disc 5036 is embedded at the end of the push-pull plate 5035 away from the collar 5033.

[0046] In this embodiment, after the telescopic rod 5021 and the sleeve 5031 are inserted, the sliding magnetic block 5034 passes through the slide rail on the surface of the sleeve 5031 and abuts against the telescopic rod 5021. When the magnetic block 5034 is magnetically engaged with the outer wall of the central guide rod of the telescopic rod 5021, the two collars 5033 can be positioned and assembled on the central guide rod of the telescopic rod 5021. Conversely, when disassembly is required, it is only necessary to pull the magnetic block 5034 away from the slot to disengage it from the magnetic engagement, which facilitates disassembly and maintenance.

[0047] Please see Figures 2-8 and Figure 10 A limiting plate 5032 is coaxially mounted on the upper end of the sleeve 5031, and vertical rails 504 with equal included angles slide on the limiting plate 5032. The push-pull plate 5035 at the end away from the collar 5033 is movably connected to the vertical rails 504.

[0048] A longitudinal groove is provided in the middle of the vertical rail 504. A toothed seat 5041 is slidably connected in the longitudinal groove. A traction arm 5042 is provided between the side of the toothed seat 5041 and the collar 5033 located at the bottom of the sleeve 5031. The upper end of the traction arm 5042 is hinged to the toothed seat 5041, and the lower end of the traction arm 5042 is hinged to one end of the push-pull plate 5035 away from the toothed disc 5036. When the collar 5033 located at the bottom of the sleeve 5031 is raised or lowered, the toothed seat 5041 can be moved along the longitudinal groove by the traction arm 5042.

[0049] A sliding plate 505 and a fixing plate 506 are provided on the side of the vertical rail 504 away from the sleeve 5031. Rollers that are staggered vertically are connected through the upper end of the vertical rail 504 and the upper end of the fixing plate 506. The staggered rollers roll and abut along the upper and lower sides of the limiting plate 5032. The upper end of the fixing plate 506 is connected to the vertical rail 504 through the rollers.

[0050] In this embodiment, when the telescopic rod 5021 drives the central guide rod to move downward, the central guide rod will drive the collar 5033 to slide longitudinally in a straight line along the sleeve 5031. The downward-moving collar 5033 will squeeze the push-pull plate 5035. Since the vertical rails 504 with equal included angles slide on the limiting plate 5032, the push-pull plate 5035 that is squeezed downward can push the vertical rails 504 and the rollers with staggered upper and lower positions to move along the upper and lower sides of the limiting plate 5032. This makes it convenient for the vertical rails 504 with equal included angles on the outer periphery of the sleeve 5031 to move closer to or away from the center, so that the support assembly 503 of the loosening mechanism 5 has the effect of retracting and expanding.

[0051] It should be noted that when the central guide rod of the telescopic rod 5021 drives the collar 5033 to move up and down, the collar 5033 located at the bottom of the sleeve 5031 will drive the traction arm 5042 to pull the tooth seat 5041 through the push-pull plate 5035, thereby enabling the tooth seat 5041 to move along the longitudinal groove in the middle of the vertical rail 504.

[0052] Please see Figures 4-8 and Figure 10 The vertical rail 504 has a notch on its surface near the slide plate 505. The slide plate 505 has a protrusion on its surface near the vertical rail 504 that slides and engages with the notch. The slide plate 505 can slide longitudinally along one side of the vertical rail 504. The surface of the slide plate 505 has a rack 5051 that meshes with the gear plate 5036. The bottom sides of the slide plate 505 are fixed with curved plates 5052.

[0053] In this embodiment, since the vertical rail 504 and the sliding plate 505 are longitudinally slidably connected, when the up-and-down moving collar 5033 drives the push-pull plate 5035 to push and pull the vertical rail 504, the vertical rail 504 moves along the limiting plate 5032, which allows the push-pull plate 5035 to adjust its angle. The angle-adjusted push-pull plate 5035 will then mesh with the rack 5051 on the surface of the sliding plate 505 via the toothed disc 5036 at one end. As the push-pull plate 5035 pushes the vertical rail 504 and the sliding plate 505 away from the sleeve... At time 5031, the push-pull plate 5035 will gradually adjust from an inclined state to a horizontal state. At this time, the toothed disc 5036 at one end of the push-pull plate 5035 will drive the slide plate 505 to move upward along the vertical rail 504 and the fixed plate 506 through the rack 5051, ensuring that the bracket assembly 503 can open up the outer slide plate 505 and the fixed plate 506, so that the fixed plates 506, which are far apart, can fit tightly against the inner wall of the pit dug by the auger 403, preventing the soil layer from collapsing inside the pit.

[0054] Conversely, when the push-pull plate 5035 pulls the vertical rail 504 and the slide plate 505 close to the sleeve 5031, the toothed disc 5036 at one end of the push-pull plate 5035 will drive the slide plate 505 to move down along the vertical rail 504 and the fixing plate 506 through the rack 5051, ensuring that the bracket assembly 503 can retract the outer slide plate 505 and the fixing plate 506.

[0055] It should be noted that when the fixing plate 506 comes into contact with the soil layer on the inner wall of the pit, the curved plates 5052 located on both sides of the bottom of the sliding plate 505 will insert into the soil exposed on both sides of the fixing plate 506. In this way, several curved plates 5052 can make shallow vertical slits in the side wall at the bottom of the pit, which makes it easier for the blueberry roots to spread out laterally and ensures that the roots of the blueberry seedlings can be more closely connected with the soil when growing laterally.

[0056] Please see Figures 6-8The upper end of the fixed plate 506 is slidably connected to the upper end of the slide plate 505, and there is a gap between the fixed plate 506 and the slide plate 505; a locking block a is fixed at one end of the vertical rail 504 near the slide plate 505, and a protruding post b is fixed on the inner wall surface of the fixed plate 506. The locking block a passes through the reserved groove on the surface of the slide plate 505 and engages with the protruding post b on the inner wall of the fixed plate 506.

[0057] In this embodiment, the upper end of the fixing plate 506 is slidably connected to the upper end of the sliding plate 505, and then the sliding plate 505 and the vertical rail 504 are pressed against each other, so that the protrusion on the surface of the sliding plate 505 is engaged with the recess on the vertical rail 504. At the same time, the locking block a on the vertical rail 504 passes through the reserved groove on the surface of the sliding plate 505 and engages with the protrusion b on the inner wall of the fixing plate 506. Then, the vertical rail 504 and the fixing plate 506 are connected through the roller, so that the vertical rail 504, the sliding plate 505 and the fixing plate 506 can be quickly assembled.

[0058] Please see Figures 4-8 and Figure 10 A toothed roller 5061 is movably connected to the inner wall of the fixed plate 506. A loosening rod 5062 is installed on the outer side of the toothed roller 5061. An inner cavity for receiving the loosening rod 5062 is opened on the outer wall of the fixed plate 506. A strip-shaped opening is longitudinally opened on the surface of the slide plate 505 near the toothed roller 5061. The toothed roller 5061 passes through the strip-shaped opening and meshes with the tooth seat 5041. The tooth seat 5041, which moves up and down, can drive the toothed roller 5061 to rotate the loosening rod 5062 at an angle.

[0059] In this embodiment, when the telescopic rod 5021 drives the central guide rod to move down and drives the collar 5033 to move longitudinally and linearly down along the sleeve 5031, the moving collar 5033 will drive the traction arm 5042 to pull the tooth seat 5041 while squeezing the push-pull plate 5035, thereby making the tooth seat 5041 mesh with the tooth roller 5061 in the positive direction. Then the rotating tooth roller 5061 will drive the loosening rod 5062 to gradually flip and be discharged from the inner cavity of the outer wall of the fixed plate 506.

[0060] When the soil loosening mechanism 5 drives the support assembly 503 to open in the pit, the fixed plate 506, which is spread out at equal angles, will gradually fit against the inner wall of the pit. As the fixed plate 506 is gradually opened, the toothed roller 5061 will drive the soil loosening rod 5062 to gradually rotate and insert into the inner wall of the pit and open up soil loosening gaps at multiple angles, which facilitates the horizontal growth of blueberry roots at multiple angles and also facilitates root aeration.

[0061] The process of loosening the soil in the excavated pit by the soil loosening mechanism 5 is as follows:

[0062] First, insert the support assembly 503 into the dug pit. Use the telescopic rod 5021 to drive the support assembly 503 to open up, so that the fixed plate 506 can open up to prevent the pit from collapsing and loosen the soil on the inner wall of the pit, leaving a loosening gap to facilitate the distribution and spread of the roots, ensuring that the blueberry roots have a wide lateral distribution and growth range.

[0063] Then, the telescopic rod 5021 is used to drive the support assembly 503 to retract, and the motor 5023 drives the reducer 5022 to rotate the support assembly 503.

[0064] Then, the telescopic rod 5021 is used again to drive the support assembly 503 to open up, thereby driving the opened fixed plate 506 to loosen the soil on the other inner walls of the pit to prevent collapse.

[0065] Finally, the chain 202 of the lifting mechanism 2 drives the retracted support assembly 503 to move upward and detach from the pit, thereby raising the loosening mechanism 5 to a suitable height, so that the frame 1 can drive the digging mechanism 4 and the loosening mechanism 5 to move along the field ridge to realize the digging and loosening operation of the next pit location.

[0066] In summary, repeating the above operations makes it convenient to loosen the soil and leave gaps in each of the intermittently dug blueberry planting pits. Furthermore, the support assembly 503 in the extended state will cause the fixing plate 506 to abut against the inner wall of the pit. At this time, the motor 5023 cannot drive the reducer 5022 to rotate, thereby preventing the bent plate 5052 and the loosening rod 5062 inserted into the soil of the pit from causing soil collapse when rotating.

[0067] Please see Figure 1 and Figure 3 A guide rod 5024 is installed on the upper side of the rear bracket 501. The guide rod 5024 pushes the adjusting frame 502 laterally through the push springs 5025 sleeved on both sides.

[0068] In this embodiment, when the frame 1 stops at the designated position and drives the digging mechanism 4 to complete the digging of the pit, the chain 202 lifts the digging mechanism 4, and simultaneously drives the loosening mechanism 5 to move down. The loosening mechanism 5 then drives the support assembly 503 to insert into the pit. Since the adjustment frame 502 on the upper side of the support assembly 503 slides on the rear bracket 501, when the telescopic rod 5021 drives the support assembly 503 and the fixing plate 506 to open, the opened fixing plate 506 will fit tightly against the inside of the pit. When the wall is lowered, the support assembly 503 will be centered with the pit, which will cause the adjustment frame 502 to press one of the push springs 5025 and stretch the other push spring 5025 along the guide rod 5024 of the rear bracket 501. This allows the adjustment frame 502 and the support assembly 503 to move laterally on the rear bracket 501, making it easier for the loosening mechanism 5 to adapt to pits with short distance differences on the field ridge. Therefore, it is not necessary to keep the support assembly 503 in the center of the pit when it is lowered into the pit.

[0069] Please see Figure 1 and Figure 2 The front bracket 401 has crossbars 6 installed on both sides. One end of the crossbar 6 is connected to the insert plate 7, and the insert plate 7 can be vertically raised and lowered along the side frame at the bottom of the frame 1. The upper end of the insert plate 7 has a strip hole for sliding with the crossbar 6. The bottom of the insert plate 7 has a strip design, which can facilitate the quick insertion of the insert plate 7 into the bottom of the ridge. The upper middle side of the insert plate 7 has a hollow reinforcing frame. When the auger 403 gradually extends into the deeper soil, the hollow reinforcing frame in the upper middle part of the insert plate 7 can prevent the insert plate 7 from deforming and shifting, making the frame 1 more stable when placed in a fixed position.

[0070] In this embodiment, when the rotating sprocket 201 drives the chain 202 to operate, the chain 202 will drive the digging mechanism 4 to move vertically up and down. When the front bracket 401 descends along the column 3, the crossbars 6 on both sides of the front bracket 401 will slide along the strip holes of the insert plate 7. When the crossbars 6 move to the bottom of the strip holes and the bottom of the insert plate 7 touches the ground, the front bracket 401, which continues to move down, will squeeze the insert plate 7 into the ground on both sides of the ridge through the crossbars 6. This ensures that the two insert plates 7 can be inserted into the ground before the auger 403 contacts the soil. This can limit the movement of the frame 1 at a fixed point, prevent the digging mechanism 4 from shaking the entire digging equipment when it is raised and lowered, and at the same time ensure that the digging mechanism 4 has a fixed-point anti-deviation effect when working.

[0071] Working principle: By pushing the frame 1 along the field ridge, when it reaches the designated position, the lifting mechanism 2 drives the digging mechanism 4 on the front of the frame 1 to dig a hole at that position. After digging the hole, the frame 1 is pushed forward again, so that the loosening mechanism 5 on the rear of the frame 1 is inserted into the previously dug hole to loosen the soil and leave gaps on the inner wall. The device is then pushed forward repeatedly to loosen the soil in each dug hole, thereby creating root expansion gaps to prevent collapse in the hole. This promotes the distributed growth of roots when blueberry seedlings are buried in the hole and covered with soil, ensuring good aeration and growth for blueberry cultivation. The contents not described in detail in this description are existing technologies known to those skilled in the art.

Claims

1. A hole-digging device for blueberry cultivation, comprising a frame (1) that travels along the field ridges, wherein a lifting mechanism (2) is provided on one side of the frame (1), characterized in that: The frame (1) has columns (3) symmetrically installed on one side near the lifting mechanism (2). The front side of the frame (1) is provided with a digging mechanism (4). The digging mechanism (4) includes a front bracket (401) installed on the chain (202) on the front side of the frame (1). The front bracket (401) slides longitudinally along the column (3). A diesel engine (402) is installed on the front bracket (401). A spiral drill (403) is connected to the bottom output shaft of the diesel engine (402). The rear side of the frame (1) is provided with a soil loosening mechanism (5). The soil loosening mechanism (5) includes a rear bracket (501) installed on the rear chain (202) of the frame (1). The rear bracket (501) slides longitudinally along the column (3). The rear bracket (501) is provided with an adjustable frame (502) that can slide back and forth. Below the adjustable frame (502) is a support assembly (503) that can be reset and opened. Using the lifting mechanism (2), the digging mechanism (4) and the loosening mechanism (5) are driven to rise and fall in opposite directions, so that the loosening mechanism (5) extends the lowered support assembly (503) into the pit dug by the previous auger (403), and the repositionable support assembly (503) loosens the soil on the inner wall of the pit to prevent collapse.

2. The blueberry planting hole-digging device according to claim 1, characterized in that: The lifting mechanism (2) includes sprockets (201) movably connected to the frame (1), with chains (202) wound around the two sprockets (201), and a hand-cranked drive assembly (203) installed on the top of the frame (1) to drive one of the sprockets (201) to rotate.

3. The blueberry planting hole-digging device according to claim 1, characterized in that: The adjustment frame (502) is equipped with a telescopic rod (5021) and a reducer (5022). The input end of the reducer (5022) is connected to a motor (5023). The bracket assembly (503) includes a sleeve (5031) that runs longitudinally through the output end of the reducer (5022). The central guide rod of the telescopic rod (5021) is slidably inserted into the sleeve (5031). A battery that supplies power to the telescopic rod (5021) and the motor (5023) is mounted on the outside of the rear bracket (501).

4. The blueberry planting hole-digging device according to claim 3, characterized in that: The upper and lower ends of the outer side of the sleeve (5031) are fitted with collars (5033), and a magnetic block (5034) slides on the inner side of the collar (5033). The telescopic rod (5021) has a slot on the outer wall of the central guide rod for magnetic attraction and insertion with the magnetic block (5034), and the sleeve (5031) has a slide rail parallel to the central axis on its surface, and the slide rail and the magnetic block (5034) are slidably connected. A push-pull plate (5035) is hinged at an equal included angle to the outer side of the collar (5033), and a toothed disc (5036) is embedded at the end of the push-pull plate (5035) away from the collar (5033).

5. The blueberry planting hole-digging device according to claim 4, characterized in that: The upper end of the sleeve (5031) is coaxially mounted with a limiting plate (5032), and vertical rails (504) with equal included angles are slidable on the limiting plate (5032). The push-pull plate (5035) at the end away from the collar (5033) is movably connected to the vertical rails (504).

6. The blueberry planting hole-digging device according to claim 5, characterized in that: The vertical rail (504) has a longitudinal groove in the middle, and a toothed seat (5041) is slidably connected in the longitudinal groove. A traction arm (5042) is provided between the side of the toothed seat (5041) and the collar (5033) located at the bottom of the sleeve (5031). The upper end of the traction arm (5042) is hinged to the tooth seat (5041), and the lower end of the traction arm (5042) is hinged to one end of the push-pull plate (5035) away from the tooth disc (5036). The collar (5033) located at the bottom of the sleeve (5031) can drive the tooth seat (5041) to move along the longitudinal slide groove through the traction arm (5042) when lifting and lowering. A sliding plate (505) and a fixing plate (506) are provided on the side of the vertical rail (504) away from the sleeve (5031). The upper end of the vertical rail (504) and the upper end of the fixing plate (506) are connected through rollers that are staggered vertically. The staggered rollers roll and abut along the upper and lower sides of the limiting plate (5032). The upper end of the fixing plate (506) is connected to the vertical rail (504) through the rollers.

7. The blueberry planting hole-digging device according to claim 6, characterized in that: The vertical rail (504) has a notch on its surface near the slide plate (505). The slide plate (505) has a protrusion on its surface near the vertical rail (504) that slides into the notch. The slide plate (505) can slide longitudinally along one side of the vertical rail (504). The surface of the slide plate (505) has a rack (5051) that meshes with the gear plate (5036). The bottom sides of the slide plate (505) are fixed with curved plates (5052). The upper end of the fixed plate (506) is slidably connected to the upper end of the slide plate (505).

8. The blueberry planting hole-digging device according to claim 6, characterized in that: A toothed roller (5061) is movably connected to the inner wall of the fixing plate (506), and a soil loosening rod (5062) is installed on the outer side of the toothed roller (5061). An inner cavity for receiving the soil loosening rod (5062) is opened on the outer wall of the fixing plate (506). The slide plate (505) has a longitudinally arranged strip-shaped opening on the surface near the toothed roller (5061). The toothed roller (5061) passes through the strip-shaped opening and engages with the toothed seat (5041). The toothed seat (5041) can be raised and lowered to drive the toothed roller (5061) to rotate the loosening rod (5062) at an angle.

9. The blueberry planting hole-digging device according to claim 3, characterized in that: A guide rod (5024) is installed on the upper side of the rear bracket (501). The guide rod (5024) pushes the adjusting frame (502) laterally through the push springs (5025) sleeved on both sides.

10. A hole-digging device for blueberry planting according to claim 1, characterized in that: The front bracket (401) is equipped with crossbars (6) on both sides. One end of the crossbar (6) is connected to a plate (7), and the plate (7) moves vertically up and down along the side frame at the bottom of the frame (1). The upper end of the plate (7) is reserved with a strip hole for sliding with the crossbar (6).

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