Hole digging device for fruit nursery stock transplanting

Abstract

The hole digging device comprises a machine frame, a hanging bracket and a hole digging mechanism, and a telescopic mechanism is arranged on the upper portion of the machine frame; the hanging bracket comprises a hanging plate, and side frames are arranged on the two sides of the hanging plate. The hole digging mechanism comprises a connecting plate, a fixing frame is arranged on the lower portion of the connecting plate, first connecting bases are arranged at the two ends of the fixing frame, and first double-end studs are rotationally connected to the first connecting bases on the two sides; a sliding seat is slidably connected to the side edge of the fixing frame, a linkage rod is fixedly connected to the threaded block, spiral augers are rotatably connected to the lower portion of the sliding seat and the lower portion of the second connecting seat, and the second rotating shaft is connected with the multiple spiral augers through a transmission mechanism. The position-adjustable sliding seat is arranged on the fixing frame of the hole digging mechanism, the spiral auger is arranged on the lower portion of the sliding seat, the driving motor drives the spiral auger to rotate through the transmission mechanism, the telescopic mechanism drives the hanging bracket to move up and down, hole digging of different hole diameters is achieved, and the universality of the hole digging device is improved.

Description

Technical Field

[0001] The invention belongs to the field of seedling transplanting equipment, and in particular relates to a hole digging device for transplanting fruit tree seedlings. Background Art

[0002] In the process of planting fruit tree seedlings, transplanting is crucial, and the quality and efficiency of digging holes, as a key step in the early stage of transplanting, directly affect the survival rate of fruit tree seedlings and their subsequent growth. The traditional method of digging holes for transplanting fruit tree seedlings mostly relies on manual labor, using simple tools such as hoes and shovels for digging. This method is not only labor-intensive and inefficient, but also the size and depth of the dug holes are difficult to ensure uniformity, which is not conducive to the expansion and growth of the root system of fruit tree seedlings, and thus affects the survival rate and growth quality of seedlings.

[0003] With the continuous improvement of agricultural mechanization, hole digging machines are gradually used in the digging of fruit tree seedlings and transplanting operations. The core digging components of the existing hole digging machines on the market include engines, spiral blades, and grips for people to hold on to. When working, the engine provides power to drive the spiral blades to rotate, and the spiral blades cut into the soil during the rotation process, thereby realizing the digging function.

[0004] However, the existing hole digging machine has a significant defect, that is, the diameter of the hole dug each time is mainly determined by the diameter of the spiral leaf. In the actual fruit tree seedling planting process, there are significant differences between different varieties of fruit tree seedlings, among which the different stem diameters of the seedlings are an important feature. For example, the stem diameters of pear seedlings and grape seedlings are obviously different in thickness, and the required planting hole diameters are also different. Larger seedlings require larger diameter holes to ensure that their roots have enough space to grow; if the holes of smaller seedlings are too large, it will not only cause a waste of soil resources, but may also affect the water and fertilizer retention capacity of the soil in the hole.

[0005] However, due to the fixed hole diameter, the existing hole digging machine is difficult to flexibly adjust the hole diameter according to the stem diameter of different varieties of fruit tree seedlings, resulting in poor versatility. When planting fruit tree seedlings with different stem diameters, it is necessary to either replace the hole digging machine with spiral blades of different specifications, which increases the equipment purchase cost and operation complexity; or the existing hole digging machine can only be used reluctantly, resulting in the hole specifications not matching the seedling requirements, affecting the planting quality and growth effect of fruit tree seedlings. Summary of the invention

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a hole digging device for transplanting fruit tree seedlings to solve the problem that the existing hole digging machines have poor versatility and cannot adapt to the hole digging for transplanting fruit trees of different varieties.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A hole-digging device for transplanting fruit tree seedlings, comprising:

[0009] A frame, the frame includes a top plate, columns are connected to both sides of the top plate, a bottom plate is provided at the bottom of the columns, and moving wheels are provided at the lower part of the bottom plate; a telescopic mechanism is provided at the upper part of the frame;

[0010] A hanging frame, the hanging frame includes a hanging plate, the telescopic end of the telescopic mechanism is connected to the hanging plate, side frames are provided on both sides of the hanging plate, and the side frames are slidably connected to the columns;

[0011] A hole-digging mechanism, the hole-digging mechanism includes a connecting plate, a motor frame is provided on the connecting plate, a speed reducer is installed on the motor frame, a driving motor is provided on one side of the speed reducer, and a second rotating shaft is provided at the lower part of the speed reducer; a fixing frame is provided at the lower part of the connecting plate, the fixing frame is a parallelogram structure, first connecting seats are provided at both ends of the fixing frame, a first double-headed stud is rotatably connected to the first connecting seats on both sides, two threaded blocks are threadedly connected to the first double-headed stud, a second connecting seat is rotatably connected to the middle of the first double-headed stud, and both the first connecting seat and the second connecting seat are fixedly connected to the connecting plate; a sliding seat is slidably connected to the side edge of the fixing frame, a linkage rod is fixedly connected to the threaded block, the end of the linkage rod passes through the sliding seat and has a clearance fit with the sliding seat, and spiral augers are rotatably connected to the lower parts of both the sliding seat and the second connecting seat, and a transmission mechanism is connected between the second rotating shaft and the plurality of spiral augers.

[0012] Further, the transmission mechanism includes a first belt pulley installed on the second rotating shaft and a second belt pulley installed on the spiral auger at the lower part of the second connecting seat, and the first belt pulley and the second belt pulley are connected by a first transmission belt; a third belt pulley is provided at the lower part of the second belt pulley, a fourth belt pulley is provided on one of the spiral augers, and the third belt pulley and the fourth belt pulley are connected by a second transmission belt; transmission belt pulleys are provided on the spiral augers at the lower part of the sliding seat, and the plurality of transmission belt pulleys are connected by a third transmission belt;

[0013] It further includes a tensioning mechanism, the tensioning mechanism includes a fixed seat, one end of the fixed seat is fixedly connected to the threaded block, a first connecting rod is slidably connected to the fixed seat, a mounting seat is fixedly connected to one end of the first connecting rod, a first spring is provided outside the first connecting rod, one end of the first spring abuts against the mounting seat, and the other end abuts against the fixed seat, a first tensioning wheel and a second tensioning wheel are rotatably connected to the lower part of the mounting seat, the first tensioning wheel presses against the third transmission belt, and the second tensioning wheel presses against the second transmission belt; the tensioning mechanism tensions the second transmission belt and the third transmission belt when the position of the spiral auger is adjusted.

[0014] Even further, the first belt pulley, the second belt pulley, the third belt pulley and the fourth belt pulley are all synchronous belt pulleys, and the first transmission belt, the second transmission belt and the third transmission belt are all synchronous toothed belts.

[0015] Further, a scale line is provided on one side of the column; a limiting cross beam is slidably connected to the column, and both sides of the limiting cross beam are connected to the column through fastening bolts, and the limiting cross beam limits the descending height of the hanging bracket.

[0016] Further, a first rotating shaft is rotatably connected to the hanging plate, the lower end of the first rotating shaft is connected to the connecting plate, the upper end of the first rotating shaft is connected to a third bevel gear, a second transmission shaft is rotatably connected to the upper part of the hanging plate, one end of the second transmission shaft is provided with a second bevel gear meshing with the third bevel gear, the other end of the second transmission shaft passes through the side frame and is connected with a second bevel gear, a protective cover is arranged outside the second transmission shaft, a first transmission shaft is rotatably connected to one side frame, both ends of the first transmission shaft pass through the side frame and are connected with gears, and a transmission wheel meshing with the first bevel gear is connected to the first transmission shaft; the column is made of channel steel, and a rack meshing with the gear is arranged on the inner wall of the column.

[0017] Further, a guide wheel is rotatably connected to the other side frame, and the guide wheel is arranged inside the column and abuts against the inner wall of the column.

[0018] Further, a secondary adjustment mechanism is arranged at the lower part of the hanging plate, the secondary adjustment mechanism includes a U-shaped seat, the lower end of the first rotating shaft is fixedly connected to the U-shaped seat, a second double-headed stud is rotatably connected to the U-shaped seat, and one end of the second double-headed stud is connected with a hand wheel; a guide rail is arranged at the lower part of the U-shaped seat; a motor protective cover is arranged on the connecting plate, the upper part of the motor protective cover is threadedly connected with the second double-headed stud, and a first sliding block is arranged on the upper part of the motor protective cover, and the first sliding block is slidably connected with the guide rail.

[0019] Furthermore, an arc-shaped guide rail is arranged at the lower part of the hanging plate, and an arc-shaped sliding block is arranged at the upper part of the U-shaped seat, and the arc-shaped sliding block is slidably mounted on the arc-shaped guide rail.

[0020] Furthermore, a second sliding block is slidably connected to the guide rail, a sliding seat is fixedly connected to one side of the second sliding block, and a counterweight mechanism is arranged on one side of the sliding seat. The counterweight mechanism includes a second connecting rod, the upper end of the second connecting rod is pivotally connected to the sliding seat, and the lower end of the second connecting rod is pivotally connected to a counterweight block.

[0021] Furthermore, a sleeve is sleeved outside the second connecting rod, and a second spring is arranged outside the sleeve. One end of the second spring is connected to the second connecting rod, and the other end of the second spring is connected to the sleeve.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1) In the present invention, a slidable seat with adjustable position is arranged on the fixed frame of the hole digging mechanism, and a spiral auger is arranged at the lower part of the slidable seat. The driving motor drives the spiral auger to rotate through the transmission mechanism, and the telescopic mechanism drives the hanging bracket to move up and down, realizing the excavation of holes with different diameters and improving the versatility of the hole digging device.

[0024] 2) A tensioning mechanism is provided on the transmission mechanism to automatically tension the second transmission belt and the third transmission belt when the position of the screw auger is adjusted, ensuring the working state after the position of the screw auger is adjusted.

[0025] 3) Scale lines and a limit cross beam are provided on the column to limit the descending height of the hanger, facilitating the precise control of the digging hole depth and ensuring the consistency of the digging hole depth.

[0026] 4) When the telescopic mechanism drives the hanger to move up and down, the rack on the inner wall of the column meshes with the gear and drives the gear to rotate. The gear drives the first transmission shaft to rotate, and drives the second transmission shaft to rotate through the transmission wheel and the first bevel gear. The second transmission shaft drives the first rotating shaft to rotate through the second bevel gear and the third bevel gear, and then drives the digging hole mechanism to rotate, realizing the compound movement of the rotation and revolution of the screw auger, and ensuring the digging hole effect.

[0027] 5) By providing a secondary adjustment mechanism at the lower part of the hanging plate, when the hand wheel is rotated, the second double-headed stud drives the motor housing to move under the U-shaped seat, thereby driving the digging hole mechanism to move under the U-shaped seat, so as to adjust the eccentric distance between the digging hole mechanism and the first rotating shaft, realizing the secondary adjustment of the digging hole range and expanding the applicable range of the digging hole device.

[0028] 6) By providing a counterweight mechanism linked to the motor housing on one side of the sliding seat, the stability of the digging hole mechanism during revolution is ensured. Description of the Drawings

[0029] Attached Figure 1 is a schematic structural diagram of a digging hole device for transplanting fruit tree seedlings according to the present invention.

[0030] Attached Figure 2 is a schematic diagram of the overall frame.

[0031] Attached Figure 3 is a schematic diagram of one side of the frame.

[0032] Attached Figure 4 is a schematic structural diagram of the hanger.

[0033] Attached Figure 5 is a bottom view of the hanger.

[0034] Attached Figure 6 is a schematic connection diagram of the digging hole mechanism and the secondary adjustment mechanism.

[0035] Attached Figure 7 is a schematic diagram of the overall digging hole mechanism.

[0036] Attached Figure 8 is a schematic diagram of the digging hole mechanism after removing the connecting plate.

[0037] AttachedFigure 9 It is a schematic diagram of the tensioning mechanism.

[0038] Appendix Figure 10 It is a schematic diagram of the connection between the secondary adjustment mechanism and the counterweight mechanism.

[0039] Appendix Figure 11 It is a schematic diagram of the bottom of the secondary adjustment mechanism.

[0040] Appendix Figure 12 It is a schematic diagram of the counterweight mechanism.

[0041] In the figure:

[0042] 1. Frame; 101. Column; 102. Top plate; 103. Scale line; 104. Limit crossbeam; 105. Fastening bolt; 106. Bottom plate; 107. Movable wheel; 108. Telescopic mechanism; 109. Rack;

[0043] 2. Hanger; 201. Hanging plate; 202. Side frame; 203. Protective cover; 204. First transmission shaft; 205. Gear; 206. Transmission wheel; 207. Second transmission shaft; 208. First bevel gear; 209. Second bevel gear; 210. Guide wheel; 211. Arc-shaped guide rail; 212. First rotating shaft; 213. Third bevel gear;

[0044] 3. Hole-digging mechanism; 301. Connecting plate; 302. Motor frame; 303. Driving motor; 304. Second rotating shaft; 305. First belt pulley; 306. Fixed frame; 307. First connecting seat; 308. Sliding seat; 309. Linking rod; 310. Second connecting seat; 311. Spiral auger; 312. First double-headed stud; 313. Threaded block; 314. Second belt pulley; 315. Third belt pulley; 316. Fourth belt pulley; 317. Transmission belt pulley;

[0045] 4. Tensioning mechanism; 401. Fixed seat; 402. First connecting rod; 403. First spring; 404. Mounting seat; 405. First tensioning wheel; 406. Second tensioning wheel;

[0046] 5. Secondary adjustment mechanism; 501. U-shaped seat; 502. Guide rail; 503. First slider; 504. Motor guard; 505. Second double-headed stud; 506. Handwheel; 507. Arc-shaped slider; 508. Sliding seat; 509. Second slider;

[0047] 6. Counterweight mechanism; 601. Second connecting rod; 602. Sleeve; 603. Second spring; 604. Counterweight block. Specific implementation method

[0048] Next, it will be combined with the appendix Figures 1 - 12, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0049] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, 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 thus should not be construed as a limitation to the present invention.

[0050] As Figure 1 shown, a hole-digging device for transplanting fruit tree seedlings includes a frame 1, a hanging frame 2, and a hole-digging mechanism 3. As Figure 2 shown, the frame 1 includes a top plate 102. Both sides of the top plate 102 are connected with columns 101. The bottom of the columns 101 is provided with a bottom plate 106, and moving wheels 107 are arranged below the bottom plate 106; an expansion mechanism 108 is arranged on the upper part of the frame 1. The expansion mechanism 108 adopts a hydraulic cylinder, a pneumatic cylinder, an electric push rod or a screw lift. In this embodiment, the expansion mechanism 108 adopts a hydraulic cylinder;

[0051] As Figure 4 shown, the hanging frame 2 includes a hanging plate 201. The telescopic end of the expansion mechanism 108 is connected with the hanging plate 201. Side frames 202 are arranged on both sides of the hanging plate 201, and the side frames 202 are slidably connected with the columns 101;

[0052] As Figure 7 , Figure 8As shown in the figure, the hole-digging mechanism 3 includes a connecting plate 301. A motor bracket 302 is provided on the connecting plate 301. A speed reducer is installed on the motor bracket 302. A driving motor 303 is provided on one side of the speed reducer. A second rotating shaft 304 is provided below the speed reducer. A fixing bracket 306 is provided below the connecting plate 301. The fixing bracket 306 is of a parallelogram structure. First connecting seats 307 are provided at both ends of the fixing bracket 306. A first double-headed stud 312 is rotatably connected to the first connecting seats 307 on both sides. Two threaded blocks 313 are threadedly connected to the first double-headed stud 312. A second connecting seat 310 is rotatably connected to the middle of the first double-headed stud 312. Both the first connecting seat 307 and the second connecting seat 310 are fixedly connected to the connecting plate 301. A sliding seat 308 is slidably connected to the side edge of the fixing bracket 306. A linkage rod 309 is fixedly connected to the threaded block 313. The end of the linkage rod 309 passes through the sliding seat 308 and has a clearance fit with the sliding seat 308. A screw auger 311 is rotatably connected to both the sliding seat 308 and the lower part of the second connecting seat 310. A transmission mechanism is provided between the second rotating shaft 304 and the multiple screw augers 311.

[0053] The driving motor 303 drives the second rotating shaft 304 to rotate through the speed reducer. The second rotating shaft 304 drives the multiple screw augers 311 to rotate through the transmission mechanism. At the same time, the telescopic mechanism 108 extends, driving the hanging bracket 2 to move downward, realizing the hole-digging operation of the screw augers 311. When the first double-headed stud 312 is rotated, the threaded blocks 313 on both sides of the first double-headed stud 312 approach or move away from each other. The linkage rod 309 is used to drive the sliding seats 308 on both sides of the fixing bracket 306 to approach or move away from each other. Under the guiding action of the fixing bracket 306 of the parallelogram structure, the position of the sliding seat 308 is adjusted, thereby realizing the adjustment of the spacing between the multiple screw augers 311, and further realizing the adjustment of the hole-digging diameter, improving the versatility of the hole-digging device.

[0054] As Figure 8 shown in the figure, the transmission mechanism includes a first belt pulley 305 installed on the second rotating shaft 304 and a second belt pulley 314 installed on the screw auger 311 at the lower part of the second connecting seat 310. The first belt pulley 305 is connected to the second belt pulley 314 through a first transmission belt. A third belt pulley 315 is provided below the second belt pulley 314. A fourth belt pulley 316 is provided on one of the screw augers 311. The third belt pulley 315 is connected to the fourth belt pulley 316 through a second transmission belt. Transmission belt pulleys 317 are provided on the screw augers 311 at the lower part of the sliding seat 308. The multiple transmission belt pulleys 317 are connected through a third transmission belt.

[0055] It further includes a tensioning mechanism 4. As Figure 9As shown in the figure, the tensioning mechanism 4 includes a fixed seat 401. One end of the fixed seat 401 is fixedly connected to the threaded block 313. A first connecting rod 402 is slidably connected to the fixed seat 401. One end of the first connecting rod 402 is fixedly connected to a mounting seat 404. A first spring 403 is arranged outside the first connecting rod 402. One end of the first spring 403 abuts against the mounting seat 404, and the other end abuts against the fixed seat 401. A first tensioning wheel 405 and a second tensioning wheel 406 are rotatably connected to the lower part of the mounting seat 404. The first tensioning wheel 405 presses against the third transmission belt, and the second tensioning wheel 406 presses against the second transmission belt. When the position of the screw auger 311 is adjusted, the tensioning mechanism 4 automatically tensions the second transmission belt and the third transmission belt, ensuring the working state after the position of the screw auger 311 is adjusted.

[0056] As a preferred mode of this embodiment, the first pulley 305, the second pulley 314, the third pulley 315 and the fourth pulley 316 are all synchronous pulleys, and the first transmission belt, the second transmission belt and the third transmission belt are all synchronous toothed belts, ensuring the stability of the transmission mechanism and avoiding slipping of the transmission mechanism.

[0057] As Figure 2 、 Figure 3 As shown in the figure, a scale line 103 is arranged on one side of the column 101, which is convenient for judging the descending height of the hanging frame 2, so as to determine the depth of the hole digging. A limiting cross beam 104 is slidably connected to the column 101. Both sides of the limiting cross beam 104 are connected to the column 101 through fastening bolts 105. The limiting cross beam 104 limits the descending height of the hanging frame 2, which is convenient for accurately controlling the depth of the hole digging and ensuring the consistency of the hole digging depth.

[0058] As Figure 4 、 Figure 5 As shown in the figure, a first rotating shaft 212 is rotatably connected to the hanging plate 201. The lower end of the first rotating shaft 212 is connected to the connecting plate 301, and the upper end of the first rotating shaft 212 is connected to a third bevel gear 213. A second transmission shaft 207 is rotatably connected to the upper part of the hanging plate 201. A second bevel gear 209 meshing with the third bevel gear 213 is arranged at one end of the second transmission shaft 207. The other end of the second transmission shaft 207 passes through the side frame 202 and is connected with a second bevel gear 209. A protective cover 203 is arranged outside the second transmission shaft 207. A first transmission shaft 204 is rotatably connected to one side frame 202. Both ends of the first transmission shaft 204 pass through the side frame 202 and are connected with gears 205. A transmission wheel 206 meshing with the first bevel gear 208 is connected to the first transmission shaft 204. As Figure 3As shown, the column 101 is made of channel steel, and a rack 109 meshing with the gear 205 is provided on the inner wall of the column 101; when the telescopic mechanism 108 drives the hanging bracket 2 to move up and down, the rack 109 meshes with the gear 205 and drives the gear 205 to rotate. The gear 205 drives the first transmission shaft 204 to rotate, and drives the second transmission shaft 207 to rotate through the transmission wheel 206 and the first bevel gear 208. The second transmission shaft 207 drives the first rotating shaft 212 to rotate through the second bevel gear 209 and the third bevel gear 213, thereby driving the hole digging mechanism 3 to rotate, realizing the compound movement of the self-rotation and revolution of the screw auger 311, and ensuring the hole digging effect.

[0059] As Figure 4 , Figure 5 shown, a guide wheel 210 is rotatably connected to the side frame 202 on the other side. The guide wheel 210 is arranged inside the column 101 and abuts against the inner wall of the column 101, ensuring the smoothness of the up and down movement of the hanging bracket 2.

[0060] As Figure 6 , Figure 10 , Figure 11 shown, a secondary adjustment mechanism 5 is provided below the hanging plate 201. The secondary adjustment mechanism 5 includes a U-shaped seat 501. The lower end of the first rotating shaft 212 is fixedly connected to the U-shaped seat 501. A second double-headed stud 505 is rotatably connected to the U-shaped seat 501, and a handwheel 506 is connected to one end of the second double-headed stud 505; a guide rail 502 is provided below the U-shaped seat 501; a motor cover 504 is provided on the connecting plate 301, and the upper part of the motor cover 504 is threadedly connected to the second double-headed stud 505. A first slider 503 is provided on the upper part of the motor cover 504, and the first slider 503 is slidably connected to the guide rail 502.

[0061] Through the above technical solution, when the handwheel 506 is rotated, the second double-headed stud 505 drives the motor cover 504 to move below the U-shaped seat 501, thereby driving the hole digging mechanism 3 to move below the U-shaped seat 501, thereby adjusting the eccentric distance between the hole digging mechanism 3 and the first rotating shaft 212, realizing the secondary adjustment of the hole digging range, and expanding the applicable range of the hole digging device.

[0062] As Figure 5 , Figure 10 shown, an arc-shaped guide rail 211 is provided below the hanging plate 201, and an arc-shaped slider 507 is provided on the upper part of the U-shaped seat 501. The arc-shaped slider 507 is slidably installed on the arc-shaped guide rail 211, enhancing the stability of the hole digging device during rotation.

[0063] As Figure 10 , Figure 11As shown, a second slider 509 is slidably connected to the guide rail 502. A slide base 508 is fixedly connected to one side of the second slider 509. A counterweight mechanism 6 is provided on one side of the slide base 508. The counterweight mechanism 6 includes a second connecting rod 601. The upper end of the second connecting rod 601 is pivotally connected to the slide base 508, and a counterweight 604 is pivotally connected to the lower end of the second connecting rod 601.

[0064] By providing the counterweight 604 on one side of the U-shaped seat 501 and moving synchronously with the movement of the motor housing 504, the stability of both sides of the U-shaped seat 501 is ensured, and the vibration during the use of the hole-digging device is reduced.

[0065] As Figure 12 shown, a sleeve 602 is sleeved outside the second connecting rod 601. A second spring 603 is provided outside the sleeve 602. One end of the second spring 603 is connected to the second connecting rod 601, and the other end of the second spring 603 is connected to the sleeve 602. When the rotational speed of the hole-digging mechanism 3 during its revolution is relatively high, the counterweight 604 is thrown up under the action of centrifugal force. As the rotational speed increases, the distance that the second connecting rod 601 extends out of the sleeve 602 becomes longer, ensuring the counterweight effect of the counterweight 604.

[0066] The above content is only an example and illustration of the structure of the present invention. Those skilled in the art of the present technology make various modifications or supplements or use similar methods to replace the specific embodiments described, as long as they do not deviate from the structure of the invention or exceed the scope defined by this claim book, they should all fall within the protection scope of the present invention.

Claims

1. A hole digging device for transplanting fruit tree seedlings, comprising: The frame includes a top plate, two sides of the top plate are connected with upright posts, a bottom plate is provided at the bottom of the upright posts, and a moving wheel is provided at the bottom of the bottom plate; The upper part of the frame is provided with a telescopic mechanism; A hanger, the hanger comprising a hanger plate, the telescopic end of the telescopic mechanism is connected to the hanger plate, side frames are provided on both sides of the hanger plate, and the side frames are slidably connected to the columns; The cam is provided with a plurality of drive shafts, and the plurality of drive shafts are connected to the plurality of drive shafts respectively.

2. A hole digging device for transplanting fruit tree seedlings according to claim 1, characterized in that: The transmission mechanism includes a first pulley mounted on the second rotating shaft and a second pulley mounted on the spiral auger at the lower part of the second connecting seat, the first pulley and the second pulley are connected by a first transmission belt; a third pulley is provided at the lower part of the second pulley, a fourth pulley is provided on one of the spiral auger, and the third pulley and the fourth pulley are connected by a second transmission belt; transmission pulleys are provided on the spiral auger at the lower part of the sliding seat, and multiple transmission pulleys are connected by a third transmission belt; It also includes a tensioning mechanism, which includes a fixed seat, one end of the fixed seat is fixedly connected to the threaded block, a first connecting rod is slidably connected to the fixed seat, one end of the first connecting rod is fixedly connected to the mounting seat, a first spring is provided on the outside of the first connecting rod, one end of the first spring is abutted against the mounting seat, and the other end is abutted against the fixed seat, a first tensioning wheel and a second tensioning wheel are rotatably connected to the lower part of the mounting seat, the first tensioning wheel tightens the third transmission belt, and the second tensioning wheel tightens the second transmission belt; the tensioning mechanism tensions the second transmission belt and the third transmission belt when the position of the spiral auger is adjusted.

3. A hole digging device for transplanting fruit tree seedlings according to claim 2, characterized in that: The first pulley, the second pulley, the third pulley and the fourth pulley are all synchronous pulleys, and the first transmission belt, the second transmission belt and the third transmission belt are all synchronous toothed belts.

4. A hole digging device for transplanting fruit tree seedlings according to claim 1, characterized in that: A scale line is provided on one side of the column; a limiting crossbeam is slidably connected to the column, and both sides of the limiting crossbeam are connected to the column through fastening bolts, and the limiting crossbeam limits the height of the hanger descent.

5. A hole digging device for transplanting fruit tree seedlings according to any one of claims 1 to 4, characterized in that: The first rotating shaft is rotatably connected on the hanging plate, the lower end of the first rotating shaft is connected to the connecting plate, the upper end of the first rotating shaft is connected to the third bevel gear, the upper part of the hanging plate is rotatably connected to the second transmission shaft, one end of the second transmission shaft is provided with a second bevel gear meshing with the third bevel gear, the other end of the second transmission shaft passes through the side frame and is connected to the second bevel gear, a protective cover is provided on the outside of the second transmission shaft, the first transmission shaft is rotatably connected on the side frame on one side, both ends of the first transmission shaft pass through the side frame and are connected to gears, and the first transmission shaft is connected to a transmission wheel meshing with the first bevel gear; the column is made of channel steel, and a rack meshing with the gear is provided on the inner wall of the column.

6. The hole digging device for transplanting fruit tree seedlings according to claim 1, characterized in that: A guide wheel is rotatably connected to the side frame on the other side. The guide wheel is arranged inside the column and abuts against the inner wall of the column.

7. The hole digging device for transplanting fruit tree seedlings according to claim 5, characterized in that: A secondary adjustment mechanism is provided at the lower part of the hanging plate, and the secondary adjustment mechanism includes a U-shaped seat, the lower end of the first rotating shaft is fixedly connected to the U-shaped seat, a second stud is rotatably connected to the U-shaped seat, and one end of the second stud is connected to a hand wheel; a guide rail is provided at the lower part of the U-shaped seat; a motor shield is provided on the connecting plate, and the upper part of the motor shield is threadedly connected to the second stud, and a first slider is provided at the upper part of the motor shield, and the first slider is slidably connected to the guide rail.

8. The hole digging device for transplanting fruit tree seedlings according to claim 7, characterized in that: An arc-shaped guide rail is arranged at the lower part of the hanging plate, and an arc-shaped sliding block is arranged at the upper part of the U-shaped seat. The arc-shaped sliding block is slidably mounted on the arc-shaped guide rail.

9. The hole digging device for transplanting fruit tree seedlings according to claim 7, characterized in that: A second slider is slidably connected to the guide rail, a slide seat is fixedly connected to one side of the second slider, a counterweight mechanism is provided on one side of the slide seat, and the counterweight mechanism includes a second connecting rod, the upper end of the second connecting rod is pivotally connected to the slide seat, and the lower end of the second connecting rod is pivotally connected to a counterweight block.

10. A hole digging device for transplanting fruit tree seedlings according to claim 9, characterized in that: A sleeve is sleeved on the outside of the second connecting rod, and a second spring is arranged on the outside of the sleeve. One end of the second spring is connected to the second connecting rod, and the other end of the second spring is connected to the sleeve.

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