Pit digging equipment for landscaping seedling planting

Abstract

The invention discloses pit digging equipment for landscaping seedling planting, and relates to the technical field of landscaping, the pit digging equipment comprises a chassis, the middle of the chassis is fixedly connected with a connecting plate, the connecting plate is provided with a soil drilling assembly, and the soil drilling assembly comprises a rotatable drill rod; a drill bit, a plurality of vibration blades and a spiral blade are sequentially arranged on the drill rod from bottom to top, a plurality of sawteeth are arranged at the ends of the vibration blades, a plurality of inclined straight grooves are formed in the two side faces of each vibration blade, and a connecting column is fixedly connected to the root of each vibration blade. A first cavity is formed in the center of the drill rod, a connecting opening is formed in the position, corresponding to the vibration blade, of the drill rod, a vibration column capable of vibrating in the axial direction is arranged in the first cavity in a sleeved mode, the root of the vibration blade penetrates into the connecting opening and then is fixedly connected with the vibration column, and a second cavity is formed in the position, corresponding to the connecting column, of the connecting opening. The device has the characteristic of improving the digging efficiency.

Description

Technical Field

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

[0002] In landscaping projects, seedling planting and digging operations must adapt to complex terrain (such as mud, gravel, and slopes) and diverse soil types (soft soil, hard soil, rock layers, etc.). Traditional digging equipment often uses fixed drill bits and a single drive mode, which has the following technical drawbacks: 1. Poor terrain adaptability: Wheeled or rigid chassis are prone to slipping and sinking on rugged terrain, and lack dynamic leveling capabilities, resulting in drill bit deflection and pit position offset; 2. Low soil processing efficiency: Conventional drill bits are not capable of crushing hard soil or rock, are prone to wear and have high energy consumption; 3. Insufficient intelligence: The drilling parameters are adjusted based on manual experience, and the vibration intensity cannot be dynamically adjusted according to the real-time soil resistance, resulting in equipment overload or uneven digging depth. 4. Poor soil discharge and anti-clogging performance: A single spiral blade is easily clogged due to soil adhesion, affecting the efficiency of continuous operation; therefore, it is necessary to design a digging equipment for landscaping and seedling planting that improves digging efficiency. Summary of the Invention

[0003] The object of the present invention is to provide a pit digging device for planting seedlings in landscaping to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a pit digging device for planting seedlings in landscaping, comprising a chassis, a connecting plate fixedly connected in the middle of the chassis, and a soil drilling assembly provided on the connecting plate; The soil drilling assembly includes a rotatable drill rod, on which a drill bit, a vibrating blade and a spiral blade are sequentially arranged from bottom to top; There are a plurality of vibrating blades, each of which has a plurality of saw teeth at its end and a plurality of obliquely arranged straight grooves on both sides of the vibrating blade; The root of the vibrating blade is fixedly connected to a connecting column, a cavity 1 is opened at the center of the drill rod, a connecting port is opened on the drill rod corresponding to the vibrating blade, a vibrating column that can vibrate along the axial direction is sleeved in the cavity 1, the root of the vibrating blade is inserted into the connecting port and fixedly connected to the vibrating column, a cavity 2 is opened on the connecting port corresponding to the connecting column, spring 1 is provided inside the upper and lower ends of the connecting column, and a spring 2 is provided at the lower end of the vibrating column; A liftable fixed plate is provided through the upper end of the drill rod, a bearing is sleeved on the drill rod, an annular groove is provided on the fixed plate corresponding to the bearing, the inner ring of the bearing is fixedly connected to the drill rod, the outer ring of the bearing is embedded in the annular groove, a pressure sensor is embedded in the contact surface between the annular groove and the upper side of the outer ring of the bearing, a microwave dielectric sensor is embedded in the root of the drill bit of the drill rod, and the signals of the microwave dielectric sensor and the pressure sensor are both connected to the processor.

[0005] According to the above technical solution, the chassis is fixedly connected to support plates on both sides along the width direction, and support components are provided on the lower sides of the two support plates; The support assembly includes two retractable support legs, the fixed ends of the support legs are hinged to the lower side of the support plate, the output ends of the support legs are spherically hinged to the base, a swing hydraulic cylinder is provided on one side of the support leg, the fixed ends of the swing hydraulic cylinder are hinged to the lower side of the support plate, the output ends of the swing hydraulic cylinder are hinged to the fixed ends of the support legs, and a non-slip rubber pad is fixedly connected to the side of the base away from the support legs.

[0006] According to the above technical solution, a laser radar is installed on the support plate near the hinge of the fixed end of the support leg, and a gyroscope is installed on the chassis. Both the laser radar and the gyroscope are connected to the processor signal.

[0007] According to the above technical solution, a circular hole is opened on the connecting plate corresponding to the soil drilling component, and a hydraulic telescopic cylinder 1 is provided at the four corners of the connecting plate, and the fixed end of the hydraulic telescopic cylinder 1 is fixedly connected to the upper side of the connecting plate, and the output ends of the four hydraulic telescopic cylinders 1 are commonly fixedly connected to the lifting plate, and the fixed plate is horizontally arranged on the upper side of the lifting plate, the upper end of the drill rod passes through the lifting plate and is slidably connected to the lifting plate, and a hydraulic telescopic cylinder 2 is provided at the four corners of the lower side of the fixed plate, and the fixed end of the hydraulic telescopic cylinder 2 is fixedly connected to the lifting plate, and the output end of the hydraulic telescopic cylinder 2 is fixedly connected to the fixed plate.

[0008] According to the above technical solution, several protrusions are fixedly connected to the drill bit, the cross-section of the vibrating blade along the vertical direction is a right-angled trapezoid, the cross-section of the vibrating blade along the horizontal direction is a trapezoid, and the root to the end of the vibrating blade adopts a size structure from wide to narrow.

[0009] According to the above technical solution, the outer wall of the vibration column is in contact with the second outer wall of the cavity, and a plurality of guide strips are fixedly connected to the outer wall of the vibration column. The guide strips are evenly distributed in a circle with the center of the vibration column as the center of the circle. A guide groove is provided on the inner wall of the cavity corresponding to the guide strip, and the guide strip is slidably connected to the guide groove.

[0010] According to the above technical solution, a connecting frame is fixedly connected to the upper side of the fixed plate, a groove is provided on the side of the connecting frame facing the fixed plate, a vibration motor is fixedly connected to the inner top wall of the groove, and the output end of the vibration motor is in direct contact with the upper end surface of the vibration column.

[0011] According to the above technical solution, the drill rod passes through the outer wall of one end of the fixed plate and is fixedly connected to a gear ring, the fixed plate is fixedly connected to a drive motor, the output end of the drive motor is fixedly connected to gear 1, and the gear 1 is meshed with the gear of the gear ring.

[0012] According to the above technical solution, a connecting rod is fixedly connected to one side of the fixed plate, and a laser ranging sensor is fixedly connected to the side of the connecting rod away from the fixed plate. The laser ranging sensor is connected to the processor signal, and the output end of the laser ranging sensor faces the ground.

[0013] Compared with the existing technology, the beneficial effects achieved by the present invention are: the present invention realizes adaptive drilling from soft soil to hard rock formations by setting a pressure sensor to monitor the axial resistance of the drill rod in real time, and combines the processor to control the vibration motor in a graded manner, thereby significantly improving the hard soil crushing efficiency.

[0014] By setting the serrated structure and straight groove structure of the vibrating blade and coordinating with the spiral blade, the integration of "crushing-diversion-soil discharge" is achieved during the drilling process, which improves the soil discharge efficiency, effectively avoids blade blockage and extends the service life.

[0015] By combining the rubber track chassis with lidar three-dimensional terrain scanning and gyroscope real-time feedback, movement and horizontal stability on complex terrain are achieved, solving the problems of traditional equipment being prone to overturning and inaccurate positioning on rugged terrain. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic structural diagram of the soil drilling assembly of the present invention; Figure 3 It is a schematic diagram of the drill rod and related structures of the present invention; Figure 4 It is a schematic diagram of the structure of the vibrating blade of the present invention; Figure 5 It is a schematic cross-sectional structural diagram of the drill rod of the present invention at the connection port; Figure 6 2. It is a schematic diagram of the top view of the drill rod structure of the present invention; Figure 7 It is a schematic cross-sectional structural diagram of the fixing plate of the present invention at the position of the drill rod; In the figure: 1. chassis; 2. connecting plate; 3. soil drilling assembly; 4. support plate; 5. support assembly; 6. support leg; 7. base; 8. swing hydraulic cylinder; 9. drill rod; 10. drill bit; 11. spiral blade; 12. vibrating blade; 13. sawtooth; 14. straight groove; 15. connecting column; 16. cavity one; 17. connecting port; 18. cavity two; 19. spring one; 20. vibrating column; 21. spring two; 22. vibrating motor; 23. circular hole; 24. hydraulic telescopic cylinder one; 25. lifting plate; 26. fixed plate; 27. hydraulic telescopic cylinder two; 28. bearing; 29. ​​annular groove; 30. connecting frame; 31. groove; 32. gear ring; 33. drive motor; 34. gear one; 35. guide bar; 36. guide groove; 37. connecting rod; 38. laser ranging sensor. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-7 The present invention provides a technical solution: a digging device for planting seedlings in gardening, comprising a chassis 1, wherein the chassis 1 adopts a crawler chassis, which is a conventional technology. The crawler of the chassis 1 adopts a rubber crawler track, which can adapt to movement on complex ground such as mud and gravel; A connecting plate 2 is fixedly connected in the middle of the chassis 1, and a soil drilling assembly 3 is provided on the connecting plate 2; support plates 4 are fixedly connected to both sides of the chassis 1 along the width direction, and support assemblies 5 are provided on the lower sides of the two support plates 4.

[0019] The support assembly 5 includes two support legs 6, which are distributed on one side of the support plate 4 along the length direction and away from the chassis 1. Each support leg 6 adopts a hydraulic telescopic cylinder. The fixed end of the support leg 6 is hinged to the lower side of the support plate 4, and the output end of the support leg 6 is spherically hinged with a base 7. The side of the base 7 away from the support leg 6 is fixedly connected with a non-slip rubber pad, so that the four support legs 6 on the two support plates 4 can support the chassis 1.

[0020] A swing hydraulic cylinder 8 is provided on one side of the support leg 6 , the fixed end of the swing hydraulic cylinder 8 is hinged to the lower side of the support plate 4 , and the output end of the swing hydraulic cylinder 8 is hinged to the fixed end of the support leg 6 .

[0021] A laser radar is installed on the support plate 4 at the hinge near the fixed end of the support leg 6. The laser radar signal is connected to a processor for scanning the surrounding terrain. The scanned data is passed through the processor to generate a three-dimensional topographic map of the working area, so as to identify obstacles such as potholes and bumps, and the best landing point for each support leg 6 is planned through the processor.

[0022] A gyroscope is installed on the chassis 1 and is connected to the processor signal. The gyroscope is used to monitor the pitch angle and roll angle of the chassis 1 in real time and feed back the pitch angle and roll angle of the chassis 1 to the processor, and adjust the pitch angle and roll angle of the chassis 1 by controlling the support component 5 to ensure that the chassis 1 is in a horizontal state.

[0023] like Figure 2 、 Figure 3 The soil drilling assembly 3 includes a rotatable drill rod 9, and a drill bit 10 is fixedly connected to the lower end of the drill rod 9. The drill bit 10 is a conical structure, and a number of protrusions are fixedly connected to the drill bit 10. The protrusions are semi-spherical. The protrusions can improve the crushing effect of hard soil and rocks, increase the friction with the soil, and disperse the impact force to protect the drill bit 10.

[0024] A plurality of vibrating blades 12 are provided on the side of the drill rod 9 close to the drill bit 10, and the plurality of vibrating blades 12 are evenly distributed in a circle with the center of the drill rod 9 as the center of the circle; a spiral blade 11 is fixedly connected to the outer wall of the drill rod 9 on the side away from the drill bit 10 relative to the vibrating blade 12. The spiral blade 11 adopts a double helical structure and is used to transport the soil loosened by the drill bit 10 and the vibrating blade 12 upward to the ground.

[0025] like Figure 4 The cross section of the vibrating blade 12 along the vertical direction is a right-angled trapezoid, the cross section of the vibrating blade 12 along the horizontal direction is a trapezoid, and the size structure of the vibrating blade 12 from the root to the end is from wide to narrow.

[0026] The end of the vibrating blade 12 is provided with a plurality of serrations 13, which are arranged in a straight line along the end of the vibrating blade 12, thereby increasing the local pressure on the soil during the drilling process and achieving crushing and shearing of the soil; Both sides of the vibrating blade 12 are provided with a plurality of obliquely arranged straight grooves 14 , which are arranged in a vertical direction. The cross-sectional shape of the straight grooves 14 is semicircular, which has the function of guiding the soil and reducing the soil's adhesion resistance to the vibrating blade 12 .

[0027] The root of the vibrating blade 12 is fixedly connected to a connecting column 15, which is vertically arranged. The length of the connecting column 15 is longer than the length of the root of the vibrating blade 12. The drill rod 9 is a hollow structure, and a cavity 16 is opened at the center of the drill rod 9. The upper end of the cavity 16 is open; like Figure 5, the drill rod 9 is provided with a connection port 17 corresponding to the vibrating blade 12, the connection port 17 is connected to the cavity 16, and the length of the connection port 17 in the vertical direction is longer than the vibrating blade 12; The root of the vibrating blade 12 penetrates the connecting port 17 and is partially located in the cavity 16. The connecting port 17 is provided with a cavity 18 corresponding to the connecting column 15. The cavity 18 is a cylindrical cavity. The length of the cavity 18 is longer than the length of the connecting column 15. The cavity 18 is connected to the connecting port 17. The connecting column 15 is located in the cavity 18 and is movably connected to the cavity 18. The outer wall of the connecting column 15 is in direct contact with the inner wall of the cavity 18. Spring 19 is provided in cavity 2 18 and at both ends of the connecting column 15. One end of spring 19 abuts against the inner wall of cavity 2 18, and the other end of spring 19 abuts against the end face of the connecting column 15, thereby achieving a buffering effect on the connecting column 15.

[0028] A vibration column 20 is sleeved in the cavity 16 , and the outer wall of the vibration column 20 is in contact with the outer wall of the cavity 16 . The lower outer wall of the vibration column 20 is fixedly connected to the roots of the plurality of vibration blades 12 .

[0029] A second spring 21 is provided at the lower end of the vibration column 20 , one end of the second spring 21 abuts against the lower inner wall of the cavity 16 , and the other end of the second spring 21 abuts against the lower end surface of the vibration column 20 , thereby achieving a vibration buffering effect on the vibration column 20 .

[0030] like Figure 2 A vibration motor 22 is provided at the upper end of the vibration column 20 , and the output end of the vibration motor 22 is in direct contact with the upper end surface of the vibration column 20 , thereby vibrating the vibration column 20 .

[0031] A circular hole 23 is provided on the connecting plate 2 corresponding to the soil drilling assembly 3 , and the circular hole 23 is used for the drill rod 9 to pass through to drill the ground.

[0032] A hydraulic telescopic cylinder 24 is provided at each of the four corners of the connecting plate 2. The hydraulic telescopic cylinder 24 is vertically arranged, and the fixed end of the hydraulic telescopic cylinder 24 is fixedly connected to the upper side of the connecting plate 2. The output ends of the four hydraulic telescopic cylinders 24 are fixedly connected to the lifting plate 25. A fixed plate 26 is provided on the upper side of the lifting plate 25, and hydraulic telescopic cylinders 27 are provided at the four corners of the lower side of the fixed plate 26. The hydraulic telescopic cylinders 27 are vertically arranged, and the fixed ends of the hydraulic telescopic cylinders 27 are fixedly connected to the lifting plate 25, and the output ends of the hydraulic telescopic cylinders 27 are fixedly connected to the fixed plate 26; The upper end of the drill rod 9 passes through the lifting plate 25 and the fixed plate 26 in sequence and is slidably connected to both. A bearing 28 is sleeved on the drill rod 9, and an annular groove 29 is formed on the fixed plate 26 corresponding to the bearing 28. The inner ring of the bearing 28 is fixedly connected to the drill rod 9, and the outer ring of the bearing 28 is embedded in the annular groove 29. The outer ring of the bearing 28 and the annular groove 29 cooperate to limit the axial position of the drill rod 9 on the fixed plate 26. A connecting frame 30 is fixedly connected to the upper side of the fixing plate 26 . The connecting frame 30 is a U-shaped plate structure. A groove 31 is formed on the side of the connecting frame 30 facing the fixing plate 26 . The vibration motor 22 is fixedly connected to the inner top wall of the groove 31 .

[0033] like Figure 7 The drill rod 9 passes through the outer wall of one end of the fixed plate 26 and is fixedly connected to a gear ring 32. The fixed plate 26 is fixedly connected to a drive motor 33. The output end of the drive motor 33 is fixedly connected to a gear 1 34. The gear 1 34 is engaged with the gear of the gear ring 32, and the drill rod 9 is driven to rotate by the drive motor 33.

[0034] A plurality of guide bars 35 are fixedly connected to the outer wall of the vibration column 20. The guide bars 35 are evenly distributed in a circle with the center of the vibration column 20 as the center. A guide groove 36 is opened on the inner wall of the cavity 16 corresponding to the guide bar 35. The guide bar 35 is slidably connected to the guide groove 36. The length of the guide groove 36 is greater than the length of the guide bar 35, so that when the drill rod 9 rotates, the vibration column 20 is driven to rotate accordingly.

[0035] A pressure sensor is embedded on the contact surface between the annular groove 29 and the upper side of the outer ring of the bearing 28. The pressure sensor is connected to the processor signal to monitor the axial resistance of the drill rod 9 caused by the soil hardness during the drilling process.

[0036] A microwave dielectric sensor is embedded in the drill rod 9 at the root of the drill bit 10 for monitoring soil moisture content. The microwave dielectric sensor is connected to the processor signal.

[0037] A connecting rod 37 is fixedly connected to one side of the fixed plate 26, and a laser ranging sensor 38 is fixedly connected to the side of the connecting rod 37 away from the fixed plate 26. The signal of the laser ranging sensor 38 is connected to the processor, and the output end of the laser ranging sensor 38 faces the ground, which is used to monitor the depth of the drill rod 9 moving downward.

[0038] In this embodiment, the driving device on the chassis 1 is started, so that the crawler running device on the chassis 1 moves as a whole to the position where the pit needs to be dug; The laser radar then scans the area, transmitting the scanned data to the processor, which creates a three-dimensional terrain map and identifies obstacles such as potholes and bumps in the terrain, thereby planning the optimal landing point for the support leg 6. Then, the processor controls each swing hydraulic cylinder 8 to adjust the angle of the support leg 6, and at the same time controls the support leg 6 to extend so that the base 7 contacts the ground and provides support; The gyroscope then feeds back the tilt state of the chassis 1, i.e., the current pitch angle and roll angle of the chassis 1, and the processor calculates the length and swing angle that each support leg 6 needs to extend, thereby eliminating the tilt of the chassis 1 and making the chassis 1 horizontal.

[0039] Subsequently, the drive motor 33 is started to rotate, and the drive motor 33 drives the drill rod 9 to rotate through the gear transmission. During this process, the vibration motor 22 does not operate; The processor presets the rotation speed of the drill rod 9 to have three levels of rotation speed, namely high rotation speed, medium rotation speed and low rotation speed; The processor presets the vibration blade 12 to have three levels of vibration amplitude, namely, high amplitude, medium amplitude, and low amplitude; The processor presets the vibration blade 12 to have three levels of vibration frequency, namely, high frequency, medium frequency, and low frequency; According to the required depth of the pit, first control the output end of the hydraulic telescopic cylinder 24 to retract, so that the drill rod 9 is lowered as a whole and starts drilling; During the drilling process, the axial resistance of the soil on the drill rod 9 is monitored by the pressure sensor preset by the processor, which is recorded as D; The soil moisture content, i.e., humidity, monitored by the microwave dielectric sensor is preset by the processor and is recorded as F; According to the specific values ​​of D and F, the soil drilling component 3 is adjusted accordingly by the processor as follows: S1: When D < 300kPa, it means the soil at the current depth is soft and in a low hardness state. In the low hardness state, make the following adjustments based on the humidity F value: S11: When F is less than 20% vol, the rotation speed of the drill rod 9 is high to improve the drilling efficiency, the amplitude of the vibrating blade 12 is low, and the vibration frequency of the vibrating blade 12 is low. The low amplitude and low frequency prevent excessive vibration of the soil and generation of dust; S12: When 20%vol≤F≤35%vol, the rotation speed of the drill rod 9 is medium, and the amplitude of the vibrating blade 12 is medium. The medium rotation speed and medium amplitude balance the cutting continuity of the vibrating blade 12 to avoid excessive compaction of the soil. The vibration frequency of the vibrating blade 12 is medium, which can loosen the soil moderately. S13: When F>35%vol, the rotation speed of the drill rod 9 is high to improve the soil discharge efficiency of the spiral blades 11; the amplitude of the vibrating blades 12 is low to prevent the vibrating blades 12 from sinking into soft soil; the vibration frequency of the vibrating blades 12 is high to break up the soil and prevent it from sticking; S2: When 300≤D≤600kPa, it means the soil at the current depth has a certain hardness and is in a medium hardness state. In the medium hardness state, the following adjustments are made according to the value of humidity F: S21: When F is less than 20% vol, the rotation speed of the drill rod 9 is medium to reduce the dust generated by soil discharge; the amplitude of the vibrating blade 12 is high frequency to impact and compact the clay; the vibration frequency of the vibrating blade 12 is high frequency to separate the debris from the vibrating blade 12; S22: When 20%vol≤F≤35%vol, the rotation speed of the drill rod 9 is medium, so as to maintain the continuous cutting effect of the vibrating blade 12 and reduce power fluctuations; the amplitude of the vibrating blade 12 is medium, and the vibration frequency of the vibrating blade 12 is medium, so as to adapt to the plasticity of the soil through the medium amplitude and medium frequency; S23: When F>35%vol, the rotation speed of the drill rod 9 is medium to reduce the frictional heat of the vibrating blade 12, the amplitude of the vibrating blade 12 is low to reduce the resistance of the vibrating blade 12, and the vibration frequency of the vibrating blade 12 is high to accelerate the discharge of soil; S3: When D>600kPa, it means that the current depth is a hard soil layer and is in a high hardness state. In the high hardness state, the value of F is not referenced, so the drill rod 9 is operated at a low speed and the vibrating blade 12 is operated at a high amplitude and high frequency; the low speed increases the torque of the vibrating blade 12 to avoid overload; the high amplitude and high frequency can increase the impact force and crushing effect of the vibrating blade 12 on the hard soil.

[0040] The depth of the drill rod 9 is monitored by a laser ranging sensor. When the retraction stroke of the hydraulic telescopic cylinder 1 24 does not meet the digging depth, the output end of the hydraulic telescopic cylinder 2 27 is controlled to retract, and the fixed plate 26 continues to follow the descent, so that the drill rod 9 can continue to drill the soil downward; During the soil drilling process, the drill bit 10 and the vibrating blade 12 soften the soil, and then the spiral blade 11 transfers the softened soil to the ground, thereby completing the digging work for the landscaping seedlings.

[0041] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A pit digging device for planting seedlings in landscaping, characterized by: It comprises a chassis (1), a connecting plate (2) is fixedly connected in the middle of the chassis (1), and a soil drilling assembly (3) is provided on the connecting plate (2); The soil drilling assembly (3) comprises a rotatable drill rod (9), on which a drill bit (10), a vibrating blade (12) and a spiral blade (11) are sequentially arranged from bottom to top; A plurality of vibrating blades (12) are provided, a plurality of saw teeth (13) are provided at the end of the vibrating blade (12), and a plurality of obliquely arranged straight grooves (14) are provided on both sides of the vibrating blade (12); The root of the vibrating blade (12) is fixedly connected to a connecting column (15), a cavity 1 (16) is provided at the center of the drill rod (9), a connecting port (17) is provided on the drill rod (9) corresponding to the vibrating blade (12), a vibrating column (20) capable of vibrating in the axial direction is sleeved in the cavity 1 (16), the root of the vibrating blade (12) is inserted into the connecting port (17) and fixedly connected to the vibrating column (20), the connecting port (17) is provided with a cavity 2 (18) corresponding to the connecting column (15), a spring 1 (19) is provided inside the upper and lower ends of the cavity 2 (18), and a spring 2 (21) is provided at the lower end of the vibrating column (20); A liftable fixing plate (26) is provided through the upper end of the drill rod (9), a bearing (28) is sleeved on the drill rod (9), an annular groove (29) is provided on the fixing plate (26) corresponding to the bearing (28), an inner ring of the bearing (28) is fixedly connected to the drill rod (9), an outer ring of the bearing (28) is embedded in the annular groove (29), a pressure sensor is embedded in the contact surface between the annular groove (29) and the upper side of the outer ring of the bearing (28), a microwave dielectric sensor is embedded in the root of the drill bit (10) of the drill rod (9), and both the microwave dielectric sensor and the pressure sensor are signal-connected to a processor.

2. The pit digging device for planting seedlings in landscaping according to claim 1, characterized in that: Both sides of the chassis (1) along the width direction are fixedly connected to support plates (4), and support components (5) are provided on the lower sides of the two support plates (4); The support assembly (5) comprises two retractable support legs (6), the fixed ends of the support legs (6) being hinged to the lower side of the support plate (4), the output ends of the support legs (6) being spherically hinged to a base (7), a swing hydraulic cylinder (8) being provided on one side of the support leg (6), the fixed ends of the swing hydraulic cylinder (8) being hinged to the lower side of the support plate (4), the output ends of the swing hydraulic cylinder (8) being hinged to the fixed ends of the support legs (6), and a non-slip rubber pad being fixedly connected to the side of the base (7) away from the support legs (6).

3. The pit digging device for planting seedlings in landscaping according to claim 2, characterized in that: A laser radar is installed on the support plate (4) at a position adjacent to the hinged portion of the fixed end of the support leg (6), and a gyroscope is installed on the chassis (1). Both the laser radar and the gyroscope are connected to processor signals.

4. The pit digging device for planting seedlings in landscaping according to claim 3, characterized in that: A circular hole (23) is provided on the connecting plate (2) corresponding to the soil drilling assembly (3), and a hydraulic telescopic cylinder (24) is provided at each of the four corners of the connecting plate (2). The fixed end of the hydraulic telescopic cylinder (24) is fixedly connected to the upper side of the connecting plate (2), and the output ends of the four hydraulic telescopic cylinders (24) are fixedly connected to the lifting plate (25). The fixed plate (26) is horizontally arranged on the upper side of the lifting plate (25), and the upper end of the drill rod (9) passes through the lifting plate (25) and is slidably connected to the lifting plate (25). A hydraulic telescopic cylinder (27) is provided at each of the four corners of the lower side of the fixed plate (26). The fixed end of the hydraulic telescopic cylinder (27) is fixedly connected to the lifting plate (25), and the output end of the hydraulic telescopic cylinder (27) is fixedly connected to the fixed plate (26).

5. The pit digging device for planting seedlings in landscaping according to claim 4, characterized in that: A plurality of protrusions are fixedly connected to the drill bit (10); the cross section of the vibrating blade (12) in the vertical direction is a right-angled trapezoid; the cross section of the vibrating blade (12) in the horizontal direction is a trapezoid; and the vibrating blade (12) has a size structure from wide to narrow from the root to the end.

6. The pit digging device for planting seedlings in landscaping according to claim 5, characterized in that: The outer wall of the vibration column (20) is in contact with the outer wall of the second cavity (18), and a plurality of guide bars (35) are fixedly connected to the outer wall of the vibration column (20). The plurality of guide bars (35) are evenly distributed in a circle with the center of the vibration column (20) as the center. The inner wall of the first cavity (16) is provided with a guide groove (36) corresponding to the guide bar (35), and the guide bar (35) is slidably connected to the guide groove (36).

7. The pit digging device for planting seedlings in landscaping according to claim 6, characterized in that: A connecting frame (30) is fixedly connected to the upper side of the fixing plate (26), and a groove (31) is provided on the side of the connecting frame (30) facing the fixing plate (26). A vibration motor (22) is fixedly connected to the inner top wall of the groove (31), and an output end of the vibration motor (22) is in direct contact with the upper end surface of the vibration column (20).

8. The pit digging device for planting seedlings in landscaping according to claim 7, characterized in that: The drill rod (9) passes through the outer wall of one end of the fixed plate (26), and a gear ring (32) is fixedly connected thereto. A driving motor (33) is fixedly connected to the fixed plate (26). The output end of the driving motor (33) is fixedly connected to a gear 1 (34), and the gear 1 (34) is meshed with a gear of the gear ring (32).

9. The pit digging device for planting seedlings in landscaping according to claim 8, characterized in that: A connecting rod (37) is fixedly connected to one side of the fixing plate (26), and a laser distance sensor (38) is fixedly connected to the side of the connecting rod (37) away from the fixing plate (26). The laser distance sensor (38) is connected to a processor signal, and an output end of the laser distance sensor (38) faces the ground.

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