Pit digging device for seedling planting

Abstract

The embodiment of the invention provides a pit digging device for seedling planting, and relates to the technical field of seedling planting. A seedling planting pit digging device comprises a chassis, the top of the chassis is fixedly connected with a frame, the two sides of the chassis are fixedly connected with three-stage cylinders, the tops of the three-stage cylinders are fixedly connected with a top frame, the bottom of the top frame is fixedly connected with a top box, and the periphery of the top box is fixedly connected with cylinder barrels; a pit digging assembly matched with the chassis in a penetrating mode is arranged on the top box, the pit digging assembly comprises a servo motor embedded in the top frame, a limiting assembly and a soil fixing assembly matched with the pit digging assembly for use are arranged on the outer side of the top box, and a supply assembly is arranged on an air cylinder barrel. A fertilizing assembly matched with the chassis is arranged at the bottom of the supply assembly. A mode of combining marked soil fixation and uniform fertilization is adopted, and efficient pit digging operation is carried out on a seedling planting area.

Description

Technical Field

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

[0002] Seedlings are tree seedlings with root systems and trunks. All seedlings cultivated in a nursery, regardless of their age, are called seedlings before they are planted. There are three types of seedlings: seedlings, vegetative propagation seedlings, transplanted seedlings, and bed-retained seedlings. Seedlings can also be classified according to trees and shrubs. Generally, there are more tree seedlings in the north and more shrubs in the south. When planting young seedlings on a large scale, a pit digging device is needed.

[0003] In the prior art (Patent No. CN111742653A, Patent Name: A Digging Machine for Planting Seedlings), an atomizing nozzle sprays water mist when the drill rod is working, so that when the surface layer is dry, dust generated by the drill rod can be suppressed to reduce the harm to workers. In the process of implementing this technical solution, it was found that the prior art has at least the following problems:

[0004] The current digging methods are mostly performed by full or semi-manual labor with the help of auxiliary tools. This method not only leads to low digging efficiency and cannot meet the needs of rapid large-scale planting of a large number of seedlings, but also because the soil is soft, the formed pits after digging are prone to soft soil backfill, resulting in incomplete digging and affecting the survival rate of the seedlings. Summary of the Invention

[0005] This application aims to at least solve one of the technical problems in the prior art, namely, the inability to efficiently dig holes in the seedling planting area by combining soil marking and uniform fertilization, which not only leads to low digging efficiency but also causes incomplete digging due to soft soil, thus affecting the survival rate. To this end, this application proposes a seedling planting digging device.

[0006] To achieve the above purpose, the specific technical solutions of the present invention are as follows:

[0007] A seedling planting and digging device comprises a chassis, the top of the chassis is fixedly connected to a vehicle frame, and both sides of the chassis are fixedly connected to three-stage cylinders, the top of the three-stage cylinder is fixedly connected to a top frame, and the bottom of the top frame is fixedly connected to a top box, and the four sides of the top box are fixedly connected to cylinder barrels;

[0008] The top box is provided with a digging assembly that penetrates and cooperates with the chassis, and the digging assembly includes a servo motor embedded in the top frame. The outside of the top box is respectively provided with a limiting assembly and a soil fixing assembly used in conjunction with the digging assembly, and the limiting assembly includes a first circuit breaker fixed to the outside of the frame;

[0009] A supply assembly is provided on the cylinder barrel, and the supply assembly includes a four-way valve connected to the cylinder barrel. A fertilizer assembly used in conjunction with the chassis is provided at the bottom of the supply assembly, and the fertilizer assembly includes a liquid storage pot threadedly connected to the four-way valve, and a sealing cover is threadedly connected to the liquid storage pot.

[0010] Preferably: the digging assembly also includes a main circular gear fixed on the output shaft of the servo motor, and the outer side of the main circular gear is connected to a slave circular gear through a synchronous belt transmission, the bottom of the main circular gear is fixedly connected to a main drill frame, and the bottom of the slave circular gear is fixedly connected to an auxiliary drill frame, and the main drill frame and the auxiliary drill frame both pass through the annular opening reserved in the chassis.

[0011] Preferably: the limiting assembly also includes a first electromagnet fixed to the bottom of the first circuit breaker, and the bottom of the first electromagnet is electromagnetically adsorbed with a cross arm through a first fixed magnet, a second circuit breaker is fixed diagonally on the outer side of the cross arm, and a second electromagnet is fixedly connected to the inner side of the cross arm, and the inner side of the second electromagnet is electromagnetically adsorbed with the top box through a second fixed magnet.

[0012] Preferably: the soil fixing assembly also includes a polished rod fixed on one of the cross arms, and the bottom of the polished rod is fixedly connected to a sliding seat, the sliding seat is slidably connected to a soil fixing insert that slides with the polished rod, and a spring is fixed between the sliding seat and the soil fixing insert, the bottom of the soil fixing insert is fixedly connected to a pointed cone head, and a marking insert is fixed on the other cross arm.

[0013] Preferably: the supply assembly also includes a main bevel gear fixed to the auxiliary drill frame close to the side of the slave circular gear, and slave bevel gears are meshed on both sides of the main bevel gear, the outer side of the slave bevel gear is fixedly connected to a cam through a fixing rod, and a piston that slides with the cylinder barrel is hinged on the cam through a connecting rod.

[0014] Preferably: the fertilizing assembly also includes a telescopic tube connected to the outer end of the four-way valve, and the bottom end of the telescopic tube is connected to the boosting pipe, and the four corners of the chassis close to the annular opening are provided with guide areas that are connected and cooperated with the boosting pipe, and the inner end of the guide area is embedded with a flow equalizing plate, and the flow equalizing hole of the flow equalizing plate adopts a downward inclined design.

[0015] Preferably, the main drill frame and the auxiliary drill frame both adopt a spiral design, and a sharp drill bit with a soil guide groove is fixedly connected to the bottom of the main drill frame and the auxiliary drill frame.

[0016] Preferably, a vertical slot with a scale groove is provided on one side of the vehicle frame close to the top frame, and a slider that slides in cooperation with the vertical slot is fixedly connected to the outer side of the top frame.

[0017] Preferably, a positioning camera used in conjunction with a soil-fixing insert and a marking insert is fixed diagonally to the outer side of the chassis, and a scale ring is provided on the marking insert.

[0018] Preferably, a liquid level sensor is embedded on the sealing cover of the liquid storage pot, a gripping notch is provided on the top of the liquid storage pot, and the chassis adopts a triangular crawler style.

[0019] The seedling planting pit digging device of the present invention has the following advantages:

[0020] 1. This seedling planting and digging device first uses a servo motor to drive two sets of slave circular gears to rotate synchronously through the synchronous belt on the main circular gear, and the main circular gear drives the main drill frame, and the two sets of slave circular gears drive the two sets of auxiliary drill frames to rotate accordingly, so as to perform efficient digging operations on the seedling planting area. At the same time, two sets of diagonally distributed tension detectors monitor the tension of the synchronous belt in real time, and two double-headed cylinders use the tensioning wheels on the two sets of connecting parts to adaptively adjust the tension of the synchronous belt to prevent the synchronous belt from becoming loose due to long-term use, resulting in temporary idling of the main drill frame and the auxiliary drill frame, thereby improving the digging and forming quality of the main drill frame and the auxiliary drill frame.

[0021] 2. This seedling planting and digging device, first, uses the first electromagnet and the first fixed magnet to perform the first-level limitation and release of the two cross arms by the two groups of first circuit breakers, and then uses the second electromagnet and the second fixed magnet to perform the first-level limitation and release of the two cross arms, so that the two cross arms can be raised and lowered following the top box, or can be kept stationary to maintain the initial position, realizing its independent mechanism. At the same time, one of the cross arms drives the sliding seat and the soil-fixing insert on the light rod under the elastic support of the spring, and the soil-fixing insert drives the pointed cone head to reinforce the soil in the planting pits dug by the main drill frame and the auxiliary drill frame to prevent the soft soil in the pit from being backfilled, and the other cross arm drives the marking rod to pre-mark the planting area that has not been dug, which is beneficial to the subsequent equidistant digging operations of the main drill frame and the auxiliary drill frame, and improves the consistency of the row spacing of the planting pits.

[0022] 3. This seedling planting and digging device, then, first, two sets of main bevel gears drive the cam to rotate through the slave bevel gear, and the cam drives the piston on the connecting rod to perform reciprocating work in the cylinder, and then the liquid fertilizer in the liquid storage pot is pressurized and supplied to the four-way valve, and is pressurized by the booster pipes on the four telescopic pipes, and then pressurized and supplied to the guide areas at the four corners of the chassis, and finally, the flow equalizing plate with a downward inclined design of the flow equalizing hole is evenly sprayed to the dug planting pit area, completing efficient digging while also achieving uniform fertilization effect, thereby improving the planting survival rate of seedlings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a structural diagram of an initial state of a seedling planting and digging device according to the present invention;

[0025] Figure 2 This is a diagram showing the working state of the structure of a seedling planting and digging device of the present invention;

[0026] Figure 3 This is a diagram showing the digging state of a seedling planting digging device according to the present invention;

[0027] Figure 4 This is a partial cross-sectional view of the structure of a seedling planting pit digging device of the present invention;

[0028] Figure 5 This is a partial internal view of the structure of a seedling planting pit digging device of the present invention;

[0029] Figure 6 A side view of the structure of the digging assembly and the tensioning assembly of the present invention;

[0030] Figure 7 A side view of the pit digging assembly structure of the present invention;

[0031] Figure 8 This is a diagram showing the initial state of the chassis, frame, three-stage cylinder, top frame, top box, restriction assembly and soil fixing assembly of the present invention;

[0032] Figure 9 This is a diagram showing the working state of the chassis, frame, three-stage cylinder, top frame, top box, restriction assembly and soil fixing assembly structure of the present invention;

[0033] Figure 10 It is a partial anatomical view of the structure of the restriction component and the soil fixing component of the present invention;

[0034] Figure 11 A side cross-sectional view of the cylinder barrel, digging assembly, supply assembly and fertilizing assembly structure of the present invention;

[0035] Figure 12 A partial side view of the structure of the pitting assembly and the supply assembly of the present invention;

[0036] Figure 13 A side cross-sectional view of the chassis, supply assembly and fertilizing assembly structure of the present invention;

[0037] Figure 14 It is a top cross-sectional view of the chassis structure of the present invention;

[0038] Figure 15 A partial top view of the structure of the digging assembly and the tensioning assembly of the present invention;

[0039] Figure 16 It is a side view of the top box structure of the present invention.

[0040] Explanation of the symbols in the figure: 1. chassis; 2. frame; 3. three-stage cylinder; 4. top frame; 5. top box; 6. cylinder barrel; 71. servo motor; 72. main circular gear; 73. slave circular gear; 74. timing belt; 75. main drill frame; 76. auxiliary drill frame; 81. first circuit breaker; 82. first electromagnet; 83. first fixed magnet; 84. cross arm; 85. second circuit breaker; 86. second electromagnet; 87. second fixed magnet; 91. polished rod; 92. slide; 93. soil fixing plug; 94. spring; 95. pointed cone head; 96. standard Note the insertion rod; 101, main bevel gear; 102, slave bevel gear; 103, cam; 104, connecting rod; 105, piston; 106, four-way valve; 111, liquid storage pot; 112, telescopic tube; 113, booster tube; 114, guide area; 115, flow equalizing plate; 121, fixed and rotating wheel; 122, double-headed cylinder; 123, connecting piece; 124, tensioning pulley; 125, tension detector; 126, damping groove; 127, damping slide; 13, pointed drill bit; 14, vertical slot; 15, positioning camera; 16, liquid level sensor. DETAILED DESCRIPTION

[0041] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments:

[0042] like Figures 1-16 As shown, a seedling planting and digging device of the present invention includes a chassis 1, which adopts a triangular crawler style. The top of the chassis 1 is fixedly connected to a vehicle frame 2, and both sides of the chassis 1 are fixedly connected to a three-stage cylinder 3, and the top of the three-stage cylinder 3 is fixedly connected to a top frame 4. A vertical groove 14 with a scale groove is opened on the side of the vehicle frame 2 close to the top frame 4, and a slider that slides with the vertical groove 14 is fixedly connected to the outer side of the top frame 4 to improve the lifting stability of the top frame 4 to prevent the top frame 4 from shaking and tilting during the lifting process, and a top box 5 is fixedly connected to the bottom of the top frame 4, and the cylinder barrel 6 is fixedly connected to the four sides of the top box 5.

[0043] The top box 5 is provided with a digging assembly that cooperates with the chassis 1, and the digging assembly includes a servo motor 71 embedded in the top frame 4, which performs efficient digging operations on the seedling planting area. The outside of the top box 5 is respectively provided with a limiting assembly and a soil fixing assembly used in conjunction with the digging assembly, and the limiting assembly includes a first circuit breaker 81 fixed to the outside of the frame 2, which reinforces the soil of the planting pits dug by the main drill frame 75 and the auxiliary drill frame 76 to prevent the soft soil in the pits from being backfilled, and also pre-marks the planting areas that have not been dug, which is beneficial to the subsequent equidistant digging operations of the main drill frame 75 and the auxiliary drill frame 76, and improves the consistency of the planting pit row spacing;

[0044] A supply assembly is provided on the cylinder barrel 6, and the supply assembly includes a four-way valve 106 connected to the cylinder barrel 6. A fertilizer assembly used in conjunction with the chassis 1 is provided at the bottom of the supply assembly, and the fertilizer assembly includes a liquid storage pot 111 threadedly connected to the four-way valve 106. A sealing cover is threadedly connected to the liquid storage pot 111. While completing efficient digging, it also achieves uniform fertilization effect and improves the planting survival rate of seedlings.

[0045] like Figure 6-Figure 14 As shown, the digging assembly also includes a main circular gear 72 fixed on the output shaft of the servo motor 71, and the outer side of the main circular gear 72 is connected to a slave circular gear 73 through a synchronous belt 74. The servo motor 71 drives the two groups of slave circular gears 73 to rotate synchronously through the synchronous belt 74 on the main circular gear 72. The bottom of the main circular gear 72 is fixedly connected to a main drill frame 75, and the bottom of the slave circular gear 73 is fixedly connected to an auxiliary drill frame 76. The main drill frame 75 and the auxiliary drill frame 76 both pass through the annular opening reserved in the chassis 1. The main circular gear 72 drives the main drill frame 75, and the two groups of slave circular gears 73 drive the two groups of auxiliary drill frames 76 to rotate accordingly, thereby performing an efficient digging operation on the seedling planting area;

[0046] The main drill frame 75 and the auxiliary drill frame 76 are both spiral-shaped, and the planting pit is spirally excavated to prevent the soil from being backfilled into the planting pit. The bottom of the main drill frame 75 and the auxiliary drill frame 76 are fixedly connected with a sharp drill bit 13 with a soil guide groove to assist in the drilling and excavation of the planting pit, thereby improving the efficiency of the excavation of the planting pit.

[0047] The limiting assembly also includes a first electromagnet 82 fixed to the bottom of the first circuit breaker 81, and the bottom of the first electromagnet 82 is electromagnetically attracted to a cross arm 84 through a first fixed magnet 83. The two groups of first circuit breakers 81 perform a first-level restriction and release on the two cross arms 84 through the first electromagnet 82 and the first fixed magnet 83. A second circuit breaker 85 is fixed diagonally on the outer side of the cross arm 84, and a second electromagnet 86 is fixedly connected to the inner side of the cross arm 84. The inner side of the second electromagnet 86 is electromagnetically attracted to the top box 5 through a second fixed magnet 87. The two groups of second circuit breakers 85 perform a first-level restriction and release on the two cross arms 84 through the second electromagnet 86 and the second fixed magnet 87, so that the two cross arms 84 can follow the top box 5 to rise and fall, or can remain stationary to maintain the initial position, thereby realizing its independent mechanism;

[0048] The soil-fixing assembly also includes a polished rod 91 fixed to one of the cross arms 84, and the bottom of the polished rod 91 is fixedly connected to a slide 92, and the slide 92 is slidably connected to a soil-fixing plug 93 that slides and cooperates with the polished rod 91, and a spring 94 is fixed between the slide 92 and the soil-fixing plug 93, and the bottom of the soil-fixing plug 93 is fixedly connected to a pointed cone head 95. One of the cross arms 84 drives the slide 92 and the soil-fixing plug 93 on the polished rod 91. Under the elastic support of the spring 94, the soil-fixing plug 93 drives the pointed cone head 95 to reinforce the planting pit dug by the main drill frame 75 and the auxiliary drill frame 76 to prevent the soft soil in the pit from being backfilled, and a marking rod 96 is fixed to the other cross arm 84, and the marking rod 96 is driven by the other cross arm 84 to insert a marking treatment in advance for the planting area that has not been dug, which is beneficial to the subsequent equidistant digging operation of the main drill frame 75 and the auxiliary drill frame 76, thereby improving the consistency of the planting pit row spacing;

[0049] A positioning camera 15 is fixed to the outer diagonal of the chassis 1 for use with the soil-fixing insert 93 and the marking rod 96. The downward pressing position of the soil-fixing insert 93 and the marking rod 96 is photographed and positioned, which is conducive to the precise downward pressing and insertion of the soil-fixing insert 93 in the already dug planting pit, and the insertion of the marking rod 96 in the undug planting area. A scale ring is provided on the marking rod 96 to read the downward pressing and insertion depth of the marking rod 96.

[0050] The supply assembly also includes a main bevel gear 101 fixed to the side of the auxiliary drill frame 76 near the slave circular gear 73, and both sides of the main bevel gear 101 are meshed with slave bevel gears 102. The outer side of the slave bevel gear 102 is fixedly connected to a cam 103 via a fixing rod. The two sets of main bevel gears 101 drive the cam 103 to rotate through the slave bevel gear 102, and the cam 103 is hinged to a piston 105 that slides with the cylinder barrel 6 through a connecting rod 104. The cam 103 drives the piston 105 on the connecting rod 104 to perform reciprocating work in the cylinder barrel 6.

[0051] The fertilization assembly also includes a telescopic tube 112 connected to the outer end of the four-way valve 106, and the bottom end of the telescopic tube 112 is connected to a boost pipe 113. The four corners of the chassis 1 near the annular opening are provided with a guide area 114 that is connected to the boost pipe 113. The liquid fertilizer in the liquid storage pot 111 is pressurized and supplied to the four-way valve 106, and is pressurized by the boost pipes 113 on the four telescopic tubes 112. It is then pressurized and supplied to the guide areas 114 at the four corners of the chassis 1, and the inner end of the guide area 114 is embedded with a flow equalizing plate 115. The flow equalizing hole of the flow equalizing plate 115 adopts a downward-inclined design. Finally, the flow equalizing plate 115 with a downward-inclined design of the flow equalizing hole is evenly sprayed to the dug planting pit area, completing efficient pit digging while also achieving uniform fertilization effect and improving the planting survival rate of seedlings;

[0052] A liquid level sensor 16 is embedded on the sealing cover of the liquid storage pot 111 to monitor the liquid fertilizer level in the liquid storage pot 111 in real time so as to replenish new liquid fertilizer in time. A gripping notch is provided on the top of the liquid storage pot 111.

[0053] like Figure 15 As shown, when the main drill frame 75 and the auxiliary drill frame 76 are digging holes in the planting area for a long time, the synchronous belt 74 will become weak and loose due to long-term use, resulting in insufficient rotation speed of the main drill frame 75 and the auxiliary drill frame 76, resulting in the planting holes not being formed in place, affecting the subsequent planting operations and survival rate of the seedlings. A tensioning assembly used in conjunction with the synchronous belt 74 is provided in the top box 5, and the tensioning assembly includes a fixed rotating wheel 121 that is driven on the synchronous belt 74 near the main circular gear 72 and rotates with the top box 5. Both sides of the inner cavity of the top box 5 are fixedly connected to a double-headed cylinder 122, and both sides of the double-headed cylinder 122 are rotationally connected to a tensioning drive with the synchronous belt 74 through a connecting piece 123. A tension detector 125 is provided at the outer diagonal of the tension pulley 124 and the synchronous belt 74, and a damping groove 126 is provided on the tension detector 125. A damping slide 127 that slides with the damping groove 126 is provided diagonally on the top box 5. The tension of the synchronous belt 74 is monitored in real time by two diagonally distributed groups of tension detectors 125, and the tension of the synchronous belt 74 is adaptively adjusted by two double-headed cylinders 122 through the tensioning pulleys 124 on the two groups of connecting parts 123 to prevent the synchronous belt 74 from becoming loose due to long-term use, resulting in temporary idling of the main drill frame 75 and the auxiliary drill frame 76, thereby improving the digging and forming quality of the main drill frame 75 and the auxiliary drill frame 76.

[0054] The working principle of a seedling planting and digging device is as follows: the chassis 1 designed with triangular crawlers is driven by the frame 2 to move as a whole. After reaching the planting area, the two three-stage cylinders 3 are first controlled to start and the upper parts are driven to move downward step by step through the top frame 4 and the top box 5. At the same time, the servo motor 71 is controlled to start and the synchronous belt 74 on the main circular gear 72 drives the two sets of slave circular gears 73 to rotate synchronously. The main circular gear 72 drives the main drill frame 75 and the sharp drill bit 13 to rotate, and the two sets of slave circular gears 73 drive the two sets of auxiliary drill frames 76 and the sharp drill bit 13 to rotate, and the current planting area is dug in a state of gradually moving downward and rotating synchronously. During this period, the synchronous belt 74 is pressed against by two sets of fixed wheels 121 for transmission. The tension of the synchronous belt 74 is monitored in real time by two sets of tension detectors 125. If the synchronous belt 74 is weak and loose, the two double-headed cylinders 122 are controlled to open and drive the two sets of tension wheels 124 to move outward synchronously through the connecting piece 123. The two sets of tension wheels 124 that move outward drive the synchronous belt 74 to adjust outward, so that the synchronous belt 74 on the main circular gear 72 fits more tightly with the two sets of slave circular gears 73. The two sets of tension detectors 125 that follow the outward movement of the synchronous belt 74 also slide outward in the damping sliding mouth 127 on the top box 5 through the damping groove 126. After the synchronous belt 74 is tensioned and adjusted to the right position, under the action of the damping force, the two sets of tension detectors 125 in place still maintain a stable monitoring state with the synchronous belt 74.

[0055] At the same time, the two groups of first circuit breakers 81 are controlled to cut off the power to the first electromagnets 82, so that the two groups of first electromagnets 82 lose the electromagnetic attraction force on the first fixed magnet 83, and the positioning restriction above the two cross arms 84 is released. Then, the two groups of second circuit breakers 85 are controlled to energize the second electromagnets 86, so that the two groups of second electromagnets 86 perform electromagnetic attraction on the two cross arms 84 and the top box 5 through the second fixed magnet 87. When the top box 5 moves downward, it also drives the two electromagnetically positioned cross arms 84 to move downward. Then, one of the cross arms 84 drives the slide 92 on the array-distributed light rod 91 to drive the soil-fixing insert 93 to move downward into the planting pit. After the soil-fixing insert 93 drives the pointed cone head 95 to move down to the bottom of the planting pit, the pointed cone head 95 and the soil-fixing insert 93 are subjected to the reverse force of the planting pit, and the cross arm 84 continues to move downward, forcing the slide 92 on the light rod 91 to slide down in the soil-fixing insert 93, and compressing the spring 94, squeezing the soft soil in the planting pit to fix the soil, and quickly and efficiently forming the planting pit. At the same time, the other cross arm 84 drives the array-distributed marking insert rods 96 to insert and mark the next batch of planting areas in front of the currently dug planting pit, which is beneficial to the marking and digging operation of the next batch of planting pits. The whole process is positioned and photographed by the diagonally distributed positioning cameras 15 to ensure that the spacing between the planting pits remains consistent. By analogy, in the planting area, three groups are used, and the process of marking, digging, and fixing the soil is carried out to perform efficient digging operations.

[0056] At the same time, the two groups of auxiliary drill frames 76 drive the cams 103 on the two groups of slave bevel gears 102 to rotate through the main bevel gear 101. The cam 103 drives the piston 105 on the connecting rod 104 to perform work in the cylinder 6, and supplies the liquid fertilizer in the liquid storage pot 111 on the four-way valve 106 into the four telescopic tubes 112. The liquid level sensor 16 monitors the liquid fertilizer in the liquid storage pot 111 in real time to replenish the liquid fertilizer in time. The liquid fertilizer supplied into the four telescopic tubes 112 is pressurized by the four booster pipes 113 and then supplied to the guide area 114 at the four corners of the chassis 1. The flow equalizing plate 115 with a downward inclined design of the flow equalizing hole evenly sprays the pressurized liquid fertilizer supplied into the guide area 114 into the dug planting pit area, thereby improving the survival rate of the seedlings.

[0057] It should be noted that the specific models and specifications of the three-stage cylinder 3, servo motor 71, circuit breaker, tension detector 125 and positioning camera 15 need to be selected and determined based on the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be repeated in detail.

[0058] The power supply circuits of the three-stage air cylinder 3, the servo motor 71, the circuit breaker, the tension detector 125, the positioning camera 15 and various sensors are clear to those skilled in the art and will not be described in detail here.

[0059] It will be understood that the present invention is described by way of some embodiments, and it will be appreciated by those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A seedling planting and digging device, comprising a chassis (1), characterized in that: The top of the chassis (1) is fixedly connected to the vehicle frame (2), and both sides of the chassis (1) are fixedly connected to the three-stage cylinder (3), the top of the three-stage cylinder (3) is fixedly connected to the top frame (4), and the bottom of the top frame (4) is fixedly connected to the top box (5), and the four sides of the top box (5) are fixedly connected to the cylinder barrel (6); The top box (5) is provided with a digging assembly that penetrates and cooperates with the chassis (1), and the digging assembly includes a servo motor (71) embedded in the top frame (4). The outside of the top box (5) is respectively provided with a limiting assembly and a soil fixing assembly used in conjunction with the digging assembly, and the limiting assembly includes a first circuit breaker (81) fixed on the outside of the vehicle frame (2); The cylinder barrel (6) is provided with a supply assembly, and the supply assembly includes a four-way valve (106) connected to the cylinder barrel (6); the bottom of the supply assembly is provided with a fertilizer assembly used in conjunction with the chassis (1); the fertilizer assembly includes a liquid storage pot (111) threadedly connected to the four-way valve (106); and a sealing cover is threadedly connected to the liquid storage pot (111).

2. A seedling planting pit digging device according to claim 1, characterized in that: The digging assembly further comprises a main circular gear (72) fixed on the output shaft of the servo motor (71), and the outer side of the main circular gear (72) is connected to a slave circular gear (73) via a synchronous belt (74). The bottom of the main circular gear (72) is fixedly connected to a main drill frame (75), and the bottom of the slave circular gear (73) is fixedly connected to a slave drill frame (76). Both the main drill frame (75) and the slave drill frame (76) pass through an annular opening reserved in the chassis (1).

3. A seedling planting pit digging device according to claim 2, characterized in that: The limiting assembly further comprises a first electromagnet (82) fixed to the bottom of the first circuit breaker (81), and the bottom of the first electromagnet (82) is electromagnetically attracted to a cross arm (84) via a first fixed magnet (83), a second circuit breaker (85) is fixed diagonally on the outer side of the cross arm (84), and a second electromagnet (86) is fixedly connected to the inner side of the cross arm (84), and the inner side of the second electromagnet (86) is electromagnetically attracted to the top box (5) via a second fixed magnet (87).

4. The seedling planting pit digging device according to claim 3, characterized in that: The soil fixing assembly further comprises a polished rod (91) fixed on one of the cross arms (84), and the bottom of the polished rod (91) is fixedly connected to a slide seat (92), a soil fixing plug (93) slidingly matched with the polished rod (91) is slidably connected to the slide seat (92), and a spring (94) is fixed between the slide seat (92) and the soil fixing plug (93), a pointed cone head (95) is fixedly connected to the bottom of the soil fixing plug (93), and a marking plug (96) is fixed on the other cross arm (84).

5. The seedling planting and digging device according to claim 4, characterized in that: The supply assembly further comprises a main bevel gear (101) fixed to a side of the auxiliary drill frame (76) close to the slave circular gear (73), and both sides of the main bevel gear (101) are meshed with slave bevel gears (102), the outer side of the slave bevel gear (102) is fixedly connected to a cam (103) via a fixing rod, and a piston (105) that is slidably engaged with the cylinder barrel (6) is hinged on the cam (103) via a connecting rod (104).

6. The seedling planting pit digging device according to claim 5, characterized in that: The fertilizing assembly further comprises a telescopic tube (112) connected to the outer end of the four-way valve (106), and the bottom end of the telescopic tube (112) is connected to a boosting tube (113), and the four corners of the chassis (1) close to the annular opening are each provided with a guide area (114) connected and matched with the boosting tube (113), and the inner end of the guide area (114) is embedded with a flow balancing plate (115), and the flow balancing hole of the flow balancing plate (115) is designed to be tilted downward.

7. The seedling planting pit digging device according to claim 6, characterized in that: The main drill frame (75) and the auxiliary drill frame (76) are both spirally designed, and a sharp drill bit (13) with a soil guide groove is fixedly connected to the bottom of the main drill frame (75) and the auxiliary drill frame (76).

8. The seedling planting pit digging device according to claim 7, characterized in that: A vertical slot (14) with a scale groove is provided on one side of the vehicle frame (2) close to the top frame (4), and a sliding block that slides in cooperation with the vertical slot (14) is fixedly connected to the outside of the top frame (4).

9. The seedling planting pit digging device according to claim 8, characterized in that: A positioning camera (15) used in conjunction with a soil-fixing insert (93) and a marking insert (96) is fixed diagonally to the outer side of the chassis (1), and a graduated ring is provided on the marking insert (96).

10. The seedling planting pit digging device according to claim 9, characterized in that: A liquid level sensor (16) is embedded on the sealing cover of the liquid storage pot (111), a gripping notch is provided on the top of the liquid storage pot (111), and the chassis (1) adopts a triangular crawler style.

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