Pit digging and fertilizing device applied to nursery stock planting

Abstract

The invention relates to the technical field of nursery stock planting, and discloses a pit digging and fertilizing device applied to nursery stock planting, comprising: a base, the top of the base is provided with a round hole, and a door-shaped frame is fixed at the top of the base close to the round hole; the pit digging assembly is connected with the door-shaped frame; the power assembly is fixed to the door-shaped frame, and the power assembly is used for driving the pit digging assembly to rotate. According to the pit digging and fertilizing device for planting, soil around a planting pit is loosened through rotation of the soil loosening assembly and the conical base, then nursery stock rooting is facilitated, meanwhile, the fertilizing assembly is pressed by the lifting assembly, water and fertilizer are injected into the soil loosening assembly and then output through the soil loosening assembly, and soil loosening work and fertilizing work are carried out at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of seedling planting, and in particular to a pit digging and fertilizing device used for seedling planting. Background Art

[0002] Seedlings are tree seedlings with roots and trunks. When planting trees, a pit is usually dug at the planting location, and then fertilizer is filled or water and fertilizer are sprayed in the planting pit. Then the seedling is placed in the planting pit and backfilled with soil. In order to improve the planting efficiency of seedlings, a pit digging and fertilizing device for seedling planting is needed;

[0003] In the prior art, fertilization is generally carried out after digging a hole, and the seedlings are placed in the planting hole. As the pit digging work proceeds, the soil on the inner wall of the planting pit is compacted to a certain extent, which will affect the rooting of the seedlings and thus affect the survival rate of the seedlings. In addition, after digging the hole, fertilization work requires the pit digging equipment to be removed and then fertilized by hand or by fertilization equipment, resulting in reduced work efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the inner wall of the planting pit is not treated after digging the pit and the fertilization is complicated, and a pit digging and fertilizing device used for seedling planting is proposed.

[0005] The technical solution of the present invention to solve the above technical problems is as follows:

[0006] A pit digging and fertilizing device for seedling planting, comprising:

[0007] A base, wherein a round hole is formed on the top of the base, and a door-shaped frame is fixed near the round hole on the top of the base;

[0008] A pit digging assembly, wherein the pit digging assembly is connected to the portal frame;

[0009] A power assembly, the power assembly is fixed to the portal frame, and the power assembly is used to drive the pit digging assembly to rotate;

[0010] A lifting assembly, the lifting assembly is arranged on the top of the base, the lifting assembly is connected to the pit digging assembly, and the lifting assembly is used to apply downward pressure to the pit digging assembly;

[0011] A fertilizing assembly, which is arranged on the top of the base and is connected to a lifting assembly, and the lifting assembly is used to apply pressure to the fertilizing assembly to achieve a fertilizing operation;

[0012] Wherein, the pit digging assembly comprises:

[0013] A connecting component, wherein the connecting component is connected to the portal frame;

[0014] A conical seat, the conical seat is connected to the connecting assembly, a plurality of spirally distributed mounting holes are provided on the side wall of the conical seat, a loosening assembly is provided in each mounting hole, and the loosening assembly is connected to the fertilizing assembly;

[0015] A spiral blade is fixed on the side wall of the conical seat.

[0016] Based on the above technical solution, the present invention can also be improved as follows.

[0017] Preferably, the connection assembly comprises:

[0018] An annular seat, the annular seat is rotatably arranged on the top of the portal frame, and the inner wall of the annular seat is provided with two protrusions;

[0019] A hollow shaft, wherein two grooves are provided on the side wall of the hollow shaft, and the two grooves are slidably connected to the two protrusions one to one, the conical seat is fixed at the bottom end of the hollow shaft, one end of the hollow shaft is connected to the fertilization component, and the other end of the hollow shaft is connected to the loosening component.

[0020] Preferably, the power assembly comprises:

[0021] A motor, wherein the motor is fixed at the bottom of the portal frame;

[0022] A first pulley, the first pulley is rotatably arranged on the top of the portal frame, and the output shaft of the motor and the first pulley are fixed;

[0023] A second belt pulley, wherein the second belt pulley is fixedly sleeved on the annular seat;

[0024] A transmission belt is sleeved on the first pulley and the second pulley.

[0025] Preferably, the lifting assembly comprises:

[0026] A hydraulic push rod is fixed on the top of the base, a transmission plate is fixed on the telescopic end of the hydraulic push rod, and a hollow shaft passes through the top of the transmission plate, and the transmission plate and the hollow shaft are rotatably connected.

[0027] Preferably, the fertilization assembly comprises:

[0028] A water and fertilizer tank, which is fixed on the top of the base and has a connecting hole on the top;

[0029] A first piston, wherein the first piston is slidably disposed on the inner wall of the water-fertilizer tank;

[0030] A sleeve, the sleeve is slidably disposed in the connecting hole, and a connecting plate is fixed to the bottom of the sleeve;

[0031] A third spring, wherein the top end of the third spring is fixed to the connecting plate, and the bottom end of the third spring is fixed to the first piston;

[0032] A sleeve rod, the sleeve rod is slidably arranged in the sleeve, the sleeve rod and the transmission plate are fixed, a second piston is arranged at the bottom end of the sleeve rod, and the second piston is slidably arranged on the inner wall of the sleeve;

[0033] A second spring is fixed on the inner wall of the bottom of the sleeve, and the second spring is fixed to the second piston.

[0034] Preferably, the fertilization component further comprises:

[0035] A fixed block, the fixed block is fixed on the top of the transmission plate;

[0036] A connecting pipe, wherein the connecting pipe is fixed to the fixing block, one end of the connecting pipe is fixedly connected to a valve, and the valve is rotatably connected to the inner wall of the hollow shaft;

[0037] A hose, one end of which is connected to the connecting pipe, and the other end of which passes through the inner wall of the bottom of the water fertilizer tank.

[0038] Preferably, the loosening assembly comprises:

[0039] A tube body, wherein the tube body is fixed in the mounting hole;

[0040] A fixing frame, wherein the fixing frame is fixed in the tube body;

[0041] A loosening cone, wherein the loosening cone is slidably disposed in a tube body, the end of the loosening cone is a conical structure, and a first piston ring is fixed to a side wall of the loosening cone;

[0042] a first spring, wherein one end of the first spring is fixed to the first piston ring, and the other end of the first spring is fixed to the fixing frame;

[0043] A circular groove, wherein the circular groove is provided on the side wall of the loosening cone;

[0044] A through hole is provided in the circular groove and passes through the side wall of the loosening cone.

[0045] Preferably, a connecting tube is fixed to the inner wall of the top of the conical seat, and the connecting tube is connected to the hollow shaft, and each of the tube bodies is connected to the connecting tube.

[0046] Preferably, universal wheels are provided at the four corners of the bottom of the base.

[0047] Preferably, it also includes:

[0048] A shell body, wherein the shell body is fixed on the inner wall of the bottom of the water-fertilizer tank;

[0049] Two gears, both of which are rotatably arranged on the inner wall of the shell, and the two gears are meshed with each other, and both side walls of each gear are fixedly provided with a rotating shaft, and each rotating shaft is hung through the side wall of the shell, and each side wall of the rotating shaft is fixed with a plurality of stirring blades;

[0050] A first tube body, which is arranged through the inner wall of the top of the shell, and is connected to the sleeve;

[0051] The second tube body is arranged on the inner wall of the bottom of the shell through the water fertilizer tank and the bottom of the base.

[0052] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0053] The present invention adopts a technical means that after the pit digging work is completed, the soil around the planting pit is loosened by rotating the loosening component and the conical seat, thereby facilitating the seedlings to take root. At the same time, the fertilization component is subjected to the pressure of the lifting component, and water and fertilizer are injected into the loosening component and then output through the loosening component. Therefore, the technical problems of the prior art that the inner wall of the planting pit is not treated after digging the pit and the cumbersome fertilization are effectively solved, thereby achieving the technical effect of improving the efficiency of seedling planting. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0055] Figure 2 This is a schematic diagram of the water fertilizer tank and sleeve structure of the present invention;

[0056] Figure 3 It is a schematic diagram of the motor and the door frame structure of the present invention;

[0057] Figure 4 It is a schematic diagram of the cross-sectional structure of the conical seat of the present invention;

[0058] Figure 5 It is a schematic diagram of the cross-sectional structure of the tube body of the present invention;

[0059] Figure 6 It is a schematic diagram of the cross-sectional structure of the loosening cone of the present invention;

[0060] Figure 7 It is a schematic diagram of the cross-sectional structure of the water fertilizer tank and the sleeve of the present invention;

[0061] Figure 8 This is a schematic diagram of the water fertilizer tank and the second pipe structure of the present invention;

[0062] Fig. 9 It is a schematic diagram of the cross-sectional structure of the shell of the present invention.

[0063] In the figure: 1, base; 2, universal wheel; 3, water fertilizer tank; 4, sleeve; 5, sleeve rod; 6, hose; 7, transmission plate; 8, fixed block; 9, connecting pipe; 10, valve; 11, hollow shaft; 12, hydraulic push rod; 13, door frame; 14, conical seat; 15, spiral blade; 16, first pulley; 17, second pulley; 18, transmission belt; 19, motor; 20, annular seat; 21, tube body; 22, connecting pipe; 23, first spring; 24, first piston ring; 25, loosening cone; 26, circular groove; 27, through hole; 28, second spring; 29, connecting plate; 30, third spring; 31, first piston; 32, fixed frame; 33, first tube body; 34, shell; 35, rotating shaft; 36, stirring blade; 37, second tube body; 38, gear; 39, second piston. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0065] Combination Figure 1-Figure 9 As shown, a pit digging and fertilizing device for seedling planting of the present invention comprises:

[0066] A base 1, a circular hole is formed on the top of the base 1, and a door frame 13 is fixed near the circular hole on the top of the base 1;

[0067] A pit digging assembly, the pit digging assembly is connected to the portal frame 13;

[0068] A power assembly, the power assembly is fixed to the portal frame 13, and the power assembly is used to drive the pit digging assembly to rotate;

[0069] A lifting assembly, which is arranged on the top of the base 1 and connected to the pit digging assembly, and is used to apply downward pressure to the pit digging assembly;

[0070] A fertilization component, which is arranged on the top of the base 1 and is connected to a lifting component, and the lifting component is used to apply pressure to the fertilization component to achieve a fertilization operation;

[0071] Among them, the pit digging components include:

[0072] A connecting component, the connecting component is connected to the door frame 13;

[0073] The conical seat 14 is connected to the connecting assembly, and a plurality of spirally distributed mounting holes are provided on the side wall of the conical seat 14. A loosening assembly is provided in each mounting hole, and the loosening assembly is connected to the fertilizing assembly;

[0074] The spiral blade 15 is fixed on the side wall of the conical seat 14 .

[0075] The pressure applied by the lifting assembly to the connecting assembly causes the conical seat 14 to descend during the rotation process, thereby cooperating with the spiral blade 15 to perform the digging work;

[0076] After the digging work is completed, the soil around the planting pit is loosened by the rotation of the loosening component and the conical seat 14, which makes it easier for the seedlings to take root. At the same time, the fertilization component is subjected to the pressure of the lifting component, and water and fertilizer are injected into the loosening component, and then output through the loosening component, thereby realizing the simultaneous loosening and fertilization work.

[0077] In a preferred embodiment, the present invention can be further configured as follows: Figure 2 , Figure 3 As shown; the connection components include:

[0078] An annular seat 20, the annular seat 20 is rotatably arranged on the top of the door frame 13, and the inner wall of the annular seat 20 is provided with two protrusions;

[0079] The hollow shaft 11 has two grooves on its side wall, and the two grooves are slidably connected to the two protrusions one by one. The conical seat 14 is fixed at the bottom end of the hollow shaft 11. One end of the hollow shaft 11 is connected to the fertilization component, and the other end of the hollow shaft 11 is connected to the loosening component.

[0080] The power components include:

[0081] Motor 19, motor 19 is fixed at the bottom of the door frame 13;

[0082] A first pulley 16, the first pulley 16 is rotatably arranged on the top of the door frame 13, and the output shaft of the motor 19 and the first pulley 16 are fixed;

[0083] A second belt pulley 17, the second belt pulley 17 is fixedly sleeved on the annular seat 20;

[0084] The transmission belt 18 is sleeved on the first pulley 16 and the second pulley 17 .

[0085] When the switch of the motor 19 is turned on, the motor 19 drives the annular seat 20 to rotate through the first pulley 16, the second pulley 17 and the transmission belt 18, and drives the hollow shaft 11 to rotate through the action of the protrusions and the grooves, thereby driving the conical seat 14 and the spiral blade 15 on the conical seat 14 to rotate.

[0086] In a preferred embodiment, the present invention can be further configured as follows: Figure 1 As shown; the lifting assembly includes:

[0087] The hydraulic push rod 12 is fixed on the top of the base 1, the telescopic end of the hydraulic push rod 12 is fixed with a transmission plate 7, and the hollow shaft 11 passes through the top of the transmission plate 7, and the transmission plate 7 and the hollow shaft 11 are rotatably connected.

[0088] When the hydraulic push rod 12 is turned on, the hydraulic push rod 12 drives the transmission plate 7 to descend. When the transmission plate 7 descends, the hollow shaft 11 is driven to descend, thereby causing the conical seat 14 to descend. When the spiral blade 15 on the conical seat 14 touches the ground, the hydraulic push rod 12 continues to apply downward pressure to the conical seat 14, and cooperates with the spiral blade 15 to realize the digging work.

[0089] In a preferred embodiment, the present invention can be further configured as follows: Figure 1 , Figure 7 As shown; the fertilization components include:

[0090] A water-fertilizer tank 3 is fixed on the top of the base 1, and a connecting hole is provided on the top of the water-fertilizer tank 3;

[0091] A first piston 31, which is slidably disposed on the inner wall of the water fertilizer tank 3;

[0092] The sleeve 4 is slidably disposed in the connecting hole, and a connecting plate 29 is fixed to the bottom of the sleeve 4;

[0093] A third spring 30, wherein the top end of the third spring 30 is fixed to the connecting plate 29, and the bottom end of the third spring 30 is fixed to the first piston 31;

[0094] A sleeve rod 5 is slidably disposed in the sleeve 4. The sleeve rod 5 is fixed to the transmission plate 7. A second piston 39 is disposed at the bottom end of the sleeve rod 5, and the second piston 39 is slidably disposed on the inner wall of the sleeve 4.

[0095] The second spring 28 is fixed on the inner wall of the bottom of the sleeve 4, and the second spring 28 and the second piston 39 are fixed.

[0096] The fertilization kit also includes:

[0097] A fixing block 8, the fixing block 8 is fixed on the top of the transmission plate 7;

[0098] A connecting pipe 9 is fixed to the fixing block 8, one end of the connecting pipe 9 is fixedly connected to a valve 10, and the valve 10 is rotatably connected to the inner wall of the hollow shaft 11;

[0099] A hose 6, one end of which is connected to a connecting pipe 9, and the other end of which passes through the inner wall of the bottom of the water-fertilizer tank 3.

[0100] During the process of the transmission plate 7 descending, the sleeve rod 5 is also driven to descend, so that the sleeve rod 5 shrinks into the sleeve 4, compressing the second spring 28. When the sleeve rod 5 and the sleeve 4 can no longer extend and retract, as the transmission plate 7 descends, the third spring 30 is compressed through the connecting plate 29. Temporary storage of energy is achieved through the second spring 28 and the third spring 30, and the switch of the valve 10 is turned on. When the valve 10 is turned on, the second spring 28 and the third spring 30 release elastic potential energy, so that the first piston 31 descends, squeezing the water and fertilizer in the water and fertilizer tank 3 below the first piston 31, so that the water and fertilizer enter the connecting pipe 9 through the hose 6, and then enter the hollow shaft 11 through the valve 10, and finally enter each pipe body 21 through the connecting pipe 22.

[0101] In a preferred embodiment, the present invention can be further configured as follows: Figure 4 , Figure 5 and Figure 6 As shown; the loosening kit includes:

[0102] The tube body 21 is fixed in the mounting hole;

[0103] A fixing frame 32, the fixing frame 32 is fixed in the tube body 21;

[0104] A loosening cone 25, which is slidably disposed in the tube body 21, the end of the loosening cone 25 is a conical structure, and a first piston ring 24 is fixed to the side wall of the loosening cone 25;

[0105] A first spring 23, one end of the first spring 23 is fixed to the first piston ring 24, and the other end of the first spring 23 is fixed to the fixing frame 32;

[0106] A circular groove 26 is provided on the side wall of the loosening cone 25;

[0107] A through hole 27 is provided in the circular groove 26 , and the through hole 27 passes through the side wall of the loosening cone 25 .

[0108] In a preferred embodiment, the present invention can be further configured as follows: Figure 4 As shown; a connecting pipe 22 is fixed to the inner wall of the top of the conical seat 14, and the connecting pipe 22 is connected to the hollow shaft 11, and each tube body 21 is connected to the connecting pipe 22.

[0109] When high-pressure liquid enters the tube body 21, the first piston ring 24 and the loosening cone 25 are pushed to move under the action of the hydraulic pressure, and the first spring 23 is stretched in the process;

[0110] When the loosening cone 25 extends out of the tube body 21, as the conical seat 14 rotates, the loosening cone 25 is used to loosen the soil around the planting pit to achieve the purpose of loosening the soil. When the loosening cone 25 extends out of the tube body 21, the water and fertilizer in the tube body 21 are output through the circular groove 26 and the through hole 27, thereby achieving fertilization during the loosening process.

[0111] In a preferred embodiment, the present invention can be further configured as follows: Figure 1 As shown; universal wheels 2 are arranged at the four corners of the bottom of the base 1.

[0112] In a preferred embodiment, the present invention can be further configured as follows: Figure 7 , Figure 8 and Fig. 9 shown; also includes:

[0113] Shell 34, shell 34 is fixed on the bottom inner wall of water fertilizer tank 3;

[0114] Two gears 38, both gears 38 are rotatably disposed on the inner wall of the housing 34, and the two gears 38 mesh with each other, and both side walls of each gear 38 are fixedly provided with a rotating shaft 35, and each rotating shaft 35 is hung through the side wall of the housing 34, and each side wall of the rotating shaft 35 is fixed with a plurality of stirring blades 36;

[0115] A first tube body 33, which is disposed through the top inner wall of the housing 34, and is communicated with the sleeve 4;

[0116] The second tube body 37 is arranged on the inner wall of the bottom of the shell 34 through the second tube body 37, and the second tube body 37 passes through the water fertilizer tank 3 and the bottom of the base 1.

[0117] During the process of the sleeve rod 5 descending, the air in the sleeve 4 is compressed by the second piston 39, so that the air in the sleeve 4 can enter the shell 34 through the first tube body 33. After the compressed gas enters the shell 34, it pushes the two gears 38 to rotate, and then drives the rotating shaft 35 to rotate, so that the stirring blade 36 rotates, and the water and fertilizer in the water and fertilizer tank 3 are stirred by the stirring blade 36, so that the water and fertilizer in the water and fertilizer tank 3 are evenly mixed, so as to ensure that the output water and fertilizer concentration is within a certain range each time fertilization is performed, thereby avoiding the reduction of water and fertilizer concentration as the working time increases.

[0118] The specific working principle of the pit digging and fertilizing device for seedling planting of the present invention is as follows:

[0119] When in use, firstly, water and fertilizer are injected into the space below the first piston 31 in the water and fertilizer tank 3;

[0120] When digging a pit for fertilization, firstly, the base 1 is pushed to a suitable position by the universal wheel 2;

[0121] The motor 19 is switched on. When the motor 19 is working, the annular seat 20 is driven to rotate through the first pulley 16, the second pulley 17 and the transmission belt 18. The hollow shaft 11 is driven to rotate through the action of the protrusions and the grooves, thereby driving the conical seat 14 and the spiral blade 15 on the conical seat 14 to rotate;

[0122] Then, the switch of the hydraulic push rod 12 is turned on. When the hydraulic push rod 12 is working, it drives the transmission plate 7 to descend. When the transmission plate 7 descends, it drives the hollow shaft 11 to descend, thereby causing the conical seat 14 to descend. When the spiral blade 15 on the conical seat 14 touches the ground, the hydraulic push rod 12 continues to apply downward pressure to the conical seat 14, and cooperates with the spiral blade 15 to realize the digging work;

[0123] When the transmission plate 7 descends, the sleeve rod 5 is driven to descend at the same time, so that the sleeve rod 5 is contracted into the sleeve 4, compressing the second spring 28. When the sleeve rod 5 and the sleeve 4 cannot continue to expand and contract, as the transmission plate 7 descends, the third spring 30 is compressed through the connecting plate 29, and the second spring 28 and the third spring 30 realize temporary storage of energy;

[0124] When the pit is finished, the motor 19 is kept working. At this time, the hydraulic push rod 12 is stopped and the switch of the valve 10 is turned on. When the valve 10 is turned on, the second spring 28 and the third spring 30 release elastic potential energy, so that the first piston 31 descends, and the water and fertilizer under the first piston 31 in the water and fertilizer tank 3 are squeezed, so that the water and fertilizer enter the connecting pipe 9 through the hose 6, and then enter the hollow shaft 11 through the valve 10, and finally enter each pipe body 21 through the connecting pipe 22;

[0125] When high-pressure liquid enters the tube body 21, the first piston ring 24 and the loosening cone 25 are pushed to move under the action of the hydraulic pressure, and the first spring 23 is stretched in the process;

[0126] When the loosening cone 25 extends out of the tube body 21, as the conical seat 14 rotates, the loosening cone 25 is used to loosen the soil around the planting pit to achieve the purpose of loosening the soil. When the loosening cone 25 extends out of the tube body 21, the water and fertilizer in the tube body 21 are output through the circular groove 26 and the through hole 27, thereby achieving fertilization during the loosening process.

[0127] It is worth noting that the direction of the through hole 27 needs to be opposite to the rotation direction of the conical seat 14 to prevent mud from entering the through hole 27 and causing blockage of the through hole 27 and the circular groove 26 .

[0128] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0129] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pit digging and fertilizing device used for seedling planting, characterized in that: include: A base (1), wherein a circular hole is formed on the top of the base (1), and a door-shaped frame (13) is fixed near the circular hole on the top of the base (1); A pit digging assembly, the pit digging assembly being connected to a portal frame (13); A power assembly, the power assembly is fixed to the portal frame (13), and the power assembly is used to drive the pit digging assembly to rotate; A lifting assembly, the lifting assembly being arranged on the top of the base (1), the lifting assembly being connected to the pit digging assembly, and the lifting assembly being used to apply downward pressure to the pit digging assembly; A fertilizing component, the fertilizing component is arranged on the top of the base (1), and the fertilizing component is connected to a lifting component, and the lifting component is used to apply pressure to the fertilizing component to achieve a fertilizing operation; Wherein, the pit digging assembly comprises: A connecting component, the connecting component is connected to the door frame (13); A conical seat (14), the conical seat (14) being connected to a connecting assembly, a side wall of the conical seat (14) being provided with a plurality of spirally distributed mounting holes, each of the mounting holes being provided with a soil loosening assembly, and the soil loosening assembly being in communication with the fertilizing assembly; A spiral blade (15) is fixed on the side wall of the conical seat (14).

2. A pit digging and fertilizing device for seedling planting according to claim 1, characterized in that: The connection component comprises: An annular seat (20), the annular seat (20) is rotatably arranged on the top of the portal frame (13), and the inner wall of the annular seat (20) is provided with two protrusions; A hollow shaft (11) is provided with two grooves on the side wall of the hollow shaft (11), and the two grooves are slidably connected to the two protrusions in a one-to-one manner. The conical seat (14) is fixed at the bottom end of the hollow shaft (11), one end of the hollow shaft (11) is connected to a fertilizing component, and the other end of the hollow shaft (11) is connected to a loosening component.

3. A pit digging and fertilizing device for seedling planting according to claim 2, characterized in that: The power assembly comprises: A motor (19), wherein the motor (19) is fixed to the bottom of the portal frame (13); A first belt pulley (16), the first belt pulley (16) is rotatably arranged on the top of the portal frame (13), and the output shaft of the motor (19) and the first belt pulley (16) are fixed; A second belt pulley (17), wherein the second belt pulley (17) is fixedly sleeved on the annular seat (20); A transmission belt (18) is sleeved on the first pulley (16) and the second pulley (17).

4. The pit digging and fertilizing device for seedling planting according to claim 2 is characterized in that: The lifting assembly comprises: A hydraulic push rod (12) is fixed on the top of the base (1), a transmission plate (7) is fixed on the telescopic end of the hydraulic push rod (12), a hollow shaft (11) passes through the top of the transmission plate (7), and the transmission plate (7) and the hollow shaft (11) are rotatably connected.

5. The pit digging and fertilizing device for seedling planting according to claim 4 is characterized in that: The fertilization assembly comprises: A water-fertilizer tank (3), the water-fertilizer tank (3) being fixed on the top of the base (1), and a connecting hole being provided on the top of the water-fertilizer tank (3); A first piston (31), wherein the first piston (31) is slidably disposed on the inner wall of the water fertilizer tank (3); A sleeve (4), the sleeve (4) being slidably disposed in the connecting hole, and a connecting plate (29) being fixed to the bottom of the sleeve (4); A third spring (30), wherein the top end of the third spring (30) is fixed to the connecting plate (29), and the bottom end of the third spring (30) is fixed to the first piston (31); A sleeve rod (5), the sleeve rod (5) is slidably arranged in the sleeve (4), the sleeve rod (5) and the transmission plate (7) are fixed, a second piston (39) is arranged at the bottom end of the sleeve rod (5), and the second piston (39) is slidably arranged on the inner wall of the sleeve (4); A second spring (28), wherein the second spring (28) is fixed on the inner wall of the bottom of the sleeve (4), and the second spring (28) and the second piston (39) are fixed.

6. The pit digging and fertilizing device for seedling planting according to claim 5, characterized in that: The fertilization assembly also includes: A fixed block (8), wherein the fixed block (8) is fixed on the top of the transmission plate (7); A connecting pipe (9), wherein the connecting pipe (9) is fixed to the fixing block (8), one end of the connecting pipe (9) is fixedly connected to a valve (10), and the valve (10) is rotatably connected to the inner wall of the hollow shaft (11); A hose (6), one end of which is connected to a connecting pipe (9), and the other end of which passes through the inner wall of the bottom of the water fertilizer tank (3).

7. The pit digging and fertilizing device for seedling planting according to claim 1, characterized in that: The loosening component comprises: A tube body (21), wherein the tube body (21) is fixed in the mounting hole; A fixing frame (32), wherein the fixing frame (32) is fixed inside the tube body (21); A loosening cone (25), wherein the loosening cone (25) is slidably disposed in the tube body (21), the end of the loosening cone (25) is a conical structure, and a first piston ring (24) is fixed to the side wall of the loosening cone (25); A first spring (23), one end of the first spring (23) being fixed to a first piston ring (24), and the other end of the first spring (23) being fixed to a fixing frame (32); A circular groove (26), wherein the circular groove (26) is provided on the side wall of the loosening cone (25); A through hole (27) is provided in the circular groove (26), and the through hole (27) passes through the side wall of the loosening cone (25).

8. The pit digging and fertilizing device for seedling planting according to claim 7, characterized in that: A connecting pipe (22) is fixed on the inner wall of the top of the conical seat (14), and the connecting pipe (22) is connected to the hollow shaft (11), and each of the tube bodies (21) is connected to the connecting pipe (22).

9. The pit digging and fertilizing device for seedling planting according to claim 1, characterized in that: Universal wheels (2) are arranged at the four corners of the bottom of the base (1).

10. The pit digging and fertilizing device for seedling planting according to claim 5, characterized in that: Also includes: A shell (34), wherein the shell (34) is fixed on the inner wall of the bottom of the water fertilizer tank (3); Two gears (38), both gears (38) are rotatably arranged on the inner wall of the housing (34), and the two gears (38) are meshed with each other, and a rotating shaft (35) is fixedly arranged on the two side walls of each gear (38), and each rotating shaft (35) is hung through the side wall of the housing (34), and a plurality of stirring blades (36) are fixed on the side wall of each rotating shaft (35); A first tube body (33), the first tube body (33) is arranged through the top inner wall of the shell (34), and the first tube body (33) is communicated with the sleeve (4); The second tube body (37) is arranged on the inner wall of the bottom of the shell (34) through the second tube body (37), and the second tube body (37) passes through the water fertilizer tank (3) and the bottom of the base (1).

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