Pit digging device for landscaping planting

Abstract

The invention relates to the technical field of planting pit digging, and discloses a landscaping planting pit digging device which comprises a mounting frame used for mounting an engine body, an output shaft in transmission connection with the engine body is arranged at the bottom of the mounting frame, and a main spiral drill bit is detachably mounted at the bottom end of the output shaft; the outer surface of the output shaft is sequentially and movably sleeved with a movable plate and a cross plate from top to bottom. According to the landscaping planting pit digging device, through the arrangement of a driving part in the protection assembly, four arc-shaped baffles can be synchronously unfolded or folded for driving, a main spiral drill bit can be wrapped and protected, the protection effect of the main spiral drill bit in the subsequent carrying and transporting process is improved, the pit digging range can be protected, and the practicability is high. And soil is prevented from splashing to the legs of workers in the pit digging process, and the pit digging device can be supported through four unfolded arc-shaped baffles, so that the stability of subsequent pit digging can be improved.

Description

Technical Field

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

[0002] As people pay more and more attention to the quality of living environment, the construction of gardens has become more and more important. Landscaping can effectively purify the air and balance the urban ecology. Usually, when planting gardens, corresponding digging devices are generally required to open holes on the ground. Existing digging devices are generally divided into fully automatic large-scale digging machines or portable hand-held digging machines. The two digging machines have their own advantages and are used for digging work in different venues.

[0003] After searching, the Chinese utility model patent with publication number CN221058746U discloses a garden greening planting digging device. By connecting two sets of plates on both sides of the spiral drill bit through a pin hinge in the gearbox structure, the two sets of plates can be rotated and fitted together when carrying. Through the adsorption of arc-shaped magnetic sheets and the cooperation of guard plates, a protective shell can be quickly formed to wrap the spiral drill bit to prevent the spiral drill bit from colliding with the human body and causing safety accidents. The rotating and unfolded sets of plates can be adsorbed and fixed by the positioning plate and the magnetic block to quickly remove the obstruction to the spiral drill bit and ensure the normal digging of the spiral drill bit. It has the characteristics of simple structure, easy operation and better safety, providing convenience and safety guarantee for its carrying.

[0004] When the above-mentioned landscaping planting digging device is not in use or at the end of use, the spiral drill bit can be wrapped and protected by closing the two hinged sleeves. However, its protection function is too single and lacks the function of protecting the digging area, so that when the digging operation is carried out, the soil is easily splashed in an expanded and dispersed state. Not only does it not utilize the collection of soil, affecting the subsequent burial work, but when the soil is too dry, it will also cause dust splashing, thereby affecting the working environment. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a garden greening planting digging device. Through the arrangement of a driving part in a protective assembly, four arc-shaped baffles can be synchronously expanded or retracted and driven, which can not only wrap and protect the main spiral drill bit, thereby improving the protective effect of the main spiral drill bit during subsequent carrying and transportation, and preventing the main spiral drill bit from being damaged by contact and collision with external objects, as well as dangerous situations caused by collision with the limbs of construction workers, but also can perform protective treatment on the digging range to prevent soil from splashing onto the legs of workers during the digging process, and can support the digging device through four expanded arc-shaped baffles, thereby improving the stability of subsequent digging, thereby solving the problem that the handheld digging device in the prior art can only protect the spiral drill bit and lacks other protective functions.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a gardening and planting pit digging device, comprising a mounting frame for mounting an engine body, an output shaft drivingly connected to the engine body is arranged at the bottom of the mounting frame, a main spiral drill bit is detachably mounted at the bottom end of the output shaft, a movable plate and a cross plate are movably sleeved on the outer surface of the output shaft from top to bottom, driving handles are installed on both sides of the top of the cross plate, and a protective component for protecting the main spiral drill bit is arranged at the bottom of the cross plate;

[0009] The protection component includes four arc-shaped baffles slidably connected to the bottom of the cross plate and a driving member for synchronously expanding or retracting the four arc-shaped baffles. The combined state of the four arc-shaped baffles is cylindrical, and the dispersed state of the four arc-shaped baffles is support leg-shaped.

[0010] Preferably, four guide rods are fixedly connected to the bottom of the mounting frame, the bottom ends of the four guide rods pass through the movable plate and extend to the bottom of the movable plate, the outer surfaces of the four guide rods are sleeved with return springs, and two control handles are fixedly connected to the mounting frame, and a control switch is installed on one of the control handles.

[0011] Preferably, the driving member comprises four driving frames hinged to the bottom of the movable plate through brackets, and one end of the four driving frames is hinged to the inner side surfaces of the four arc-shaped baffles respectively;

[0012] The top of the cross plate is rotatably connected to a first screw rod through a bracket, the outer surface of the first screw rod is threadedly connected to a threaded block, and the threaded block is slidably connected to the top of the cross plate, and both sides of the threaded block are hinged with inclined expansion rods, and one end of the two expansion rods is respectively hinged to the two sides of the movable plate.

[0013] Preferably, a positioning anchor rod is fixedly connected to the bottom of the arc-shaped baffle plate, and a brush member for cleaning the main spiral drill bit is detachably mounted on the inner side surface of four or one of the arc-shaped baffle plates.

[0014] Preferably, a secondary spiral drill bit is detachably mounted on the bottom of the main spiral drill bit, and the diameter of the secondary spiral drill bit is smaller than that of the main spiral drill bit;

[0015] The bottom of the main spiral drill bit is provided with a mounting groove, and the interior of the mounting groove is provided with a clamping hole. The top of the auxiliary spiral drill bit is fixedly connected with a clamping frame for inserting into the mounting groove, and the interior of the clamping frame is slidably connected with a T-shaped clamping block for inserting into the clamping hole, and an extrusion spring is provided for elastically extruding the T-shaped clamping block.

[0016] Preferably, two movable frames are installed on the outer side surface of one of the arc-shaped baffles, and the interiors of the two movable frames are rotatably connected to winding rollers, a transparent protective belt is fixedly connected between the outer surfaces of the two winding rollers, and the inner sides of the transparent protective belt are in contact with the outer sides of the other three arc-shaped baffles, and the outer sides of the other three arc-shaped baffles are fixedly connected to positioning plates for positioning the transparent protective belts.

[0017] Preferably, an adjustment component for adjusting the downward movement distance of the mounting frame is provided on the top of the movable plate, and the adjustment component includes a height-adjustable limiting ring block.

[0018] Preferably, the limiting ring block is movably sleeved on the outer surface of the output shaft, one side of the movable plate is fixedly connected to an L-shaped frame, and the top of the L-shaped frame is slidably connected to an adjustment block, an inclined adjustment rod is hinged between the adjustment block and the limiting ring block, one side of the L-shaped frame is rotatably connected to a second screw rod for horizontal movement of the adjustment block, and the second screw rod is connected to the internal thread of the adjustment block.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the present invention provides a garden greening planting pit digging device, which has the following

[0021] Beneficial effects:

[0022] 1. The present invention is used to protect the main spiral drill bit by setting four arc-shaped baffles in the protection component. The four arc-shaped baffles can be synchronously expanded or retracted and driven by the setting of the driving member. When the four arc-shaped baffles are retracted into a cylindrical shape, the main spiral drill bit can be wrapped and protected, thereby improving the protection effect of the main spiral drill bit during subsequent carrying and transportation, preventing the main spiral drill bit from being damaged by contact and collision with external objects and dangerous situations caused by collision with the limbs of construction personnel, and having good protection function; on the contrary, through the expansion movement of the four arc-shaped baffles, not only can the digging range be protected to prevent soil from splashing onto the legs of the workers during the digging process, but the digging device can also be supported by the four expanded arc-shaped baffles, thereby improving the stability of the subsequent digging process, and preventing the problems of equipment tipping and pit tilting in the subsequent digging process.

[0023] 2. The present invention installs a transparent protective belt between the four arc-shaped baffles, which can not only further reduce the splashing of soil during digging, but also can fully collect the soil behind the outer pit to prevent the soil from being too dispersed, thereby affecting the subsequent cultivation and burial problem, and can effectively block the airflow in the digging environment, reduce the dust flying in the digging process, and affect the working environment; the two ends of the transparent protective belt are respectively connected by two winding rollers, and the rotating ends of the two winding rollers are installed with torsion springs, so that when the four arc-shaped baffles are retracted, the transparent protective belt can automatically form a winding work, and has the function of automatic expansion and contraction, which further improves the convenience of the transparent protective belt when used for protection.

[0024] 3. The present invention can drive the adjustment block to move horizontally by manually rotating the second screw rod, thereby driving the two adjustment rods to move in a fan shape, thereby driving the limit ring block to adjust up and down, thereby forming an adjustment of the downward movement distance of the main spiral drill bit, thereby meeting the needs of digging holes at different depths and planting different garden seedlings, improving the diversity of the digging device, and solving the problem that the existing handheld digging device can only adjust the digging depth by the amplitude and force of its own downward pressing when digging holes, so that the depths of different holes are easily different, resulting in the problem of unequal heights when the seedlings are planted in a unified manner later. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the garden greening planting pit digging device of the present invention;

[0026] Figure 2 For the present invention Figure 1 Bottom view of the structure of the garden greening planting pit digging device;

[0027] Figure 3 For the present invention Figure 2A top view of the structure of the digging device for gardening and greening planting;

[0028] Figure 4 For the present invention Figure 3 Schematic diagram of the structure of the middle protection component;

[0029] Figure 5 For the present invention Figure 4 Schematic diagram of the combination of the middle movable plate and the cross plate;

[0030] Figure 6 For the present invention Figure 4 Schematic diagram of the combination of four arc-shaped baffles;

[0031] Figure 7 For the present invention Figure 6 A schematic diagram of the structure of the middle arc baffle;

[0032] Figure 8 For the present invention Figure 1 A schematic diagram of the assembly of the middle main auger bit, the adjustment assembly and the drive member;

[0033] Fig. 9 For the present invention Figure 8 Schematic diagram of the installation of the engine body and the main auger bit;

[0034] Fig.10 For the present invention Fig. 9 Schematic diagram of disassembly and assembly of the main spiral drill bit and the auxiliary spiral drill bit.

[0035] In the figure: 1. Engine body;

[0036] 2. Mounting frame; 21. Guide rod; 22. Return spring; 23. Control handle;

[0037] 3. Output shaft;

[0038] 4. Main spiral drill bit; 41. Auxiliary spiral drill bit; 42. Mounting slot; 43. Clamping frame; 44. T-type clamping block; 45. Extrusion spring;

[0039] 5. Movable plate; 6. Cross plate;

[0040] 7. Protective assembly; 71. Arc baffle; 711. Positioning anchor rod; 712. Brush member; 713. Movable frame; 714. Winding roller; 715. Transparent protective belt; 716. Positioning plate; 72. Driving member; 721. Driving frame; 722. First screw rod; 723. Thread block; 724. Expanding rod;

[0041] 8. Adjustment assembly; 81. Limiting ring block; 82. L-shaped frame; 83. Adjustment block; 84. Adjustment rod; 85. Second screw rod. DETAILED DESCRIPTION

[0042] 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.

[0043] Embodiment 1:

[0044] See attached Figure 1-10 A gardening and planting pit digging device includes a mounting frame 2 for mounting an engine body 1, an output shaft 3 drivingly connected to the engine body 1 is arranged at the bottom of the mounting frame 2, a main spiral drill bit 4 is detachably mounted at the bottom of the output shaft 3, a movable plate 5 and a cross plate 6 are movably sleeved on the outer surface of the output shaft 3 from top to bottom, driving handles are installed on both sides of the top of the cross plate 6, and a protective component 7 for protecting the main spiral drill bit 4 is arranged at the bottom of the cross plate 6;

[0045] The engine body 1 adopts the engine equipment in the prior art, which is used to drive the output shaft 3 to rotate. The main spiral drill bit 4 is detachably installed at the bottom end of the output shaft 3, which can drive the main spiral drill bit 4 to rotate, and cooperate with the downward movement of the main spiral drill bit 4 to form a pit digging work;

[0046] By installing a driving handle on the top of the cross plate 6, it is convenient for workers to transfer and carry the digging device. The protection component 7 is provided to protect the main spiral drill bit 4, thereby improving the protection effect of the main spiral drill bit 4 during subsequent carrying and transportation.

[0047] The protection assembly 7 includes four arc-shaped baffles 71 slidably connected to the bottom of the cross plate 6 and a driving member 72 for synchronously expanding or retracting the four arc-shaped baffles 71. The combined state of the four arc-shaped baffles 71 is cylindrical, and the dispersed state of the four arc-shaped baffles 71 is support leg-shaped;

[0048] The four arc-shaped baffles 71 are provided to protect the main spiral drill bit 4. The four arc-shaped baffles 71 can be synchronously expanded or retracted by the drive member 72. When the four arc-shaped baffles 71 are retracted into a cylindrical shape, the main spiral drill bit 4 can be wrapped and protected, thereby improving the protective effect of the main spiral drill bit 4 during subsequent carrying and transportation, preventing the main spiral drill bit 4 from being damaged by contact and collision with external objects and from colliding with the limbs of construction personnel, and having good protective functions.

[0049] On the contrary, through the expansion movement of the four arc-shaped baffles 71, not only can the digging range be protected to prevent soil from splashing onto the legs of the workers during the digging process, but the digging device can also be supported by the four expanded arc-shaped baffles 71, thereby improving the stability of subsequent digging and preventing problems such as equipment tipping and pit tilting during the subsequent digging process.

[0050] See attached Figure 1 , Figure 3 , Figure 8 and Fig. 9 Four guide rods 21 are fixedly connected to the bottom of the mounting frame 2. The bottom ends of the four guide rods 21 penetrate the movable plate 5 and extend to the bottom of the movable plate 5. The outer surfaces of the four guide rods 21 are sleeved with return springs 22. Two control handles 23 are fixedly connected to the mounting frame 2, and a control switch is installed on one of the control handles 23;

[0051] The four guide rods 21 are provided to improve the smoothness of the up and down movement of the mounting frame 2 and the engine body 1. The four return springs 22 are provided to improve the smoothness of the upward return of the mounting frame 2 and the engine body 1 after the pit digging is completed, so as to facilitate the next round of pit digging.

[0052] The setting of the control handle 23 makes it convenient for the staff to control the digging device by hand, and the setting of the control switch is used to control the engine body 1 to drive the digging work.

[0053] See attached Figure 5 and Figure 6 The driving member 72 includes four driving frames 721 hinged to the bottom of the movable plate 5 through brackets, and one end of the four driving frames 721 is hinged to the inner side surfaces of the four arc-shaped baffles 71 respectively;

[0054] The upward and downward movement of the movable plate 5 can drive the four drive frames 721 to move in a fan-shaped manner, and the fan-shaped movement of the four drive frames 721 can drive the four arc-shaped baffles 71 hinged thereto to be expanded or retracted. The retracting movement of the four arc-shaped baffles 71 can wrap and protect the main spiral drill bit 4, thereby improving the protective effect of the main spiral drill bit 4 during subsequent carrying and transportation, preventing the main spiral drill bit 4 from being damaged by contact and collision with external objects and from dangerous situations caused by collision with the limbs of construction personnel, and having good protective functions;

[0055] On the contrary, through the unfolding movement of the four arc-shaped baffles 71, not only can the scope of the pit be protected to prevent soil from splashing onto the legs of the workers during the pit digging process, but the four unfolded arc-shaped baffles 71 can also support the pit digging device, thereby improving the stability of the subsequent pit digging and preventing the problem of equipment tipping and pit tilting in the subsequent pit digging process;

[0056] The top of the cross plate 6 is rotatably connected to a first screw rod 722 through a bracket, and a threaded block 723 is threadedly connected to the outer surface of the first screw rod 722, and the threaded block 723 is slidably connected to the top of the cross plate 6, and both sides of the threaded block 723 are hinged with inclined expansion rods 724, and one end of the two expansion rods 724 is respectively hinged to the two sides of the movable plate 5;

[0057] By manually rotating the first screw rod 722, the threaded block 723 can be driven to move horizontally, and then the two unfolding rods 724 can be driven to move in a fan shape. The fan-shaped movement of the two unfolding rods 724 can drive the movable plate 5 to move up and down. Through the up and down movement of the movable plate 5, the four drive frames 721 can be driven to move in a fan shape, and finally the four arc-shaped baffles 71 hinged thereto can be driven to expand or retract.

[0058] See attached Figure 6 and Figure 7 A positioning anchor rod 711 is fixedly connected to the bottom of the arc-shaped baffle plate 71, and a brush member 712 for cleaning the main spiral drill bit 4 is detachably installed on the inner side surface of four or one of the arc-shaped baffle plates 71;

[0059] By fixing a positioning anchor rod 711 at the bottom of the arc-shaped baffle plate 71, when the excavation device is supported by four arc-shaped baffle plates 71, the positioning anchor rod 711 can be inserted into the ground, further improving the stability of the excavation device when working;

[0060] By detachably installing a brush piece 712 on the inner side surface of the arc-shaped baffle plate 71, when the four arc-shaped baffle plates 71 are received to wrap the main spiral drill bit 4, the brush piece 712 can contact the outer surface of the main spiral drill bit 4. In conjunction with the rotation of the main spiral drill bit 4, the main spiral drill bit 4 can be cleaned by the brush piece 712 to prevent the problem of soil remaining on the outer surface of the main spiral drill bit 4 after the pit is dug, which may easily cause corrosion damage to the main spiral drill bit 4. The brush piece 712 has a good self-cleaning function and does not require manual operation, which further improves the convenience of operation.

[0061] See attached Fig. 9 and Fig.10 A secondary spiral drill bit 41 is detachably mounted at the bottom of the main spiral drill bit 4, and the diameter of the secondary spiral drill bit 41 is smaller than the diameter of the main spiral drill bit 4;

[0062] The auxiliary spiral drill bit 41 is detachably installed at the bottom of the main spiral drill bit 4, so that when the main spiral drill bit 4 is digging a hole, the auxiliary spiral drill bit 41 can be used to dig a hole first, which not only improves the convenience of the main spiral drill bit 4 moving downward to dig a hole, but also after the digging is completed, the bottom of the hole contains a small hole, and the opening of the small hole facilitates the positioning of the root system wrapped at the bottom of the garden seedling, thereby ensuring its verticality and positioning in the subsequent cultivation process, and preventing the subsequent burial of the garden seedling from being tilted due to the small hole, and having the function of double hole excavation;

[0063] A mounting groove 42 is provided at the bottom of the main spiral drill bit 4, and a clamping hole is provided inside the mounting groove 42. A clamping frame 43 for inserting into the mounting groove 42 is fixedly connected to the top of the auxiliary spiral drill bit 41, and a T-shaped clamping block 44 for inserting into the clamping hole is slidably connected inside the clamping frame 43, and an extrusion spring 45 for elastically extruding the T-shaped clamping block 44 is provided.

[0064] By inserting the clamping frame 43 into the mounting groove 42, the main spiral drill bit 4 and the auxiliary spiral drill bit 41 can be rotationally locked, ensuring that when the main spiral drill bit 4 rotates, the auxiliary spiral drill bit 41 can be driven to rotate synchronously;

[0065] By squeezing the elastic force of the squeezing spring 45 itself, the T-shaped clamping block 44 can be squeezed so that the T-shaped clamping block 44 is inserted into the clamping hole at the corresponding position, thereby forming an installation and locking system for the main spiral drill bit 4 and the auxiliary spiral drill bit 41. It has good disassembly and assembly functions, which is convenient for the staff to selectively use the auxiliary spiral drill bit 41 according to actual needs.

[0066] Embodiment 2: Based on embodiment 1, the difference is that;

[0067] See attached Figure 6 and Figure 7 , two movable frames 713 are installed on the outer side of one of the arc-shaped baffles 71, and the interiors of the two movable frames 713 are rotatably connected to winding rollers 714, and a transparent protective belt 715 is fixedly connected between the outer surfaces of the two winding rollers 714, and the inner side of the transparent protective belt 715 is in contact with the outer side surfaces of the other three arc-shaped baffles 71, and the outer side surfaces of the other three arc-shaped baffles 71 are fixedly connected to positioning plates 716 for positioning the transparent protective belt 715;

[0068] By installing a transparent protective belt 715 between the four arc-shaped baffles 71, not only can the splashing of soil during digging be further reduced, but also the soil behind the outer pit can be fully collected to prevent the soil from being too dispersed, which will affect the subsequent cultivation and burial problem, and the airflow in the digging environment can be effectively blocked to reduce the dust flying during the digging process and the problem of affecting the working environment;

[0069] The two ends of the transparent protective belt 715 are respectively connected by two winding rollers 714, and the rotating ends of the two winding rollers 714 are installed with torsion springs, so that when the four arc-shaped baffles 71 are retracted, the transparent protective belt 715 can automatically form a winding operation, and has the function of automatic expansion and contraction, which further improves the convenience of the transparent protective belt 715 when used for protection.

[0070] Embodiment 3: Based on embodiment 1, the difference is that;

[0071] See attached Figure 5 and Figure 8 , an adjusting assembly 8 for adjusting the downward movement distance of the mounting frame 2 is provided on the top of the movable plate 5, and the adjusting assembly 8 includes a height-adjustable limiting ring block 81;

[0072] The setting of the limit ring block 81 is used to tighten the downward moving mounting frame 2, thereby ensuring that the depth is uniform when the main spiral drill bit 4 is used to drill holes. The limit ring block 81 is installed in a height-adjustable manner, which makes it easy to control the different distances of the downward movement of the mounting frame 2, thereby meeting the digging work of different depths. This solves the problem of manually controlling the drilling depth in the prior art, which not only increases the labor intensity, but also reduces the accuracy of digging holes with uniform depth.

[0073] The limiting ring block 81 is movably sleeved on the outer surface of the output shaft 3, an L-shaped frame 82 is fixedly connected to one side of the movable plate 5, and an adjustment block 83 is slidably connected to the top of the L-shaped frame 82, an inclined adjustment rod 84 is hinged between the adjustment block 83 and the limiting ring block 81, and a second screw rod 85 for horizontal movement of the adjustment block 83 is rotatably connected to one side of the L-shaped frame 82, and the second screw rod 85 is connected to the internal thread of the adjustment block 83;

[0074] By manually driving the second screw rod 85 to rotate, the adjustment block 83 can be driven to move horizontally, and then the two adjustment rods 84 can be driven to move in a fan shape, and then the limit ring block 81 can be driven to adjust up and down, so as to adjust the downward movement distance of the main spiral drill bit 4, so as to meet the needs of digging pits at different depths and planting different garden seedlings, thereby improving the diversity of the digging device;

[0075] The invention solves the problem that the existing handheld digging device can only adjust the digging depth by the amplitude and strength of pressing downward when digging, so that the depths of different holes are easily different, resulting in different heights of saplings when they are planted in the same way later.

[0076] It should be noted that the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0077] 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 gardening and planting pit digging device, comprising a mounting frame (2) for mounting an engine body (1), an output shaft (3) drivingly connected to the engine body (1) being arranged at the bottom of the mounting frame (2), a main spiral drill bit (4) being detachably mounted at the bottom end of the output shaft (3), characterized in that: The outer surface of the output shaft (3) is movably sleeved with a movable plate (5) and a cross plate (6) in sequence from top to bottom, a driving handle is installed on both sides of the top of the cross plate (6), and a protective component (7) for protecting the main spiral drill bit (4) is provided at the bottom of the cross plate (6); The protection assembly (7) comprises four arc-shaped baffles (71) slidably connected to the bottom of the cross plate (6) and a driving member (72) for synchronously expanding or retracting the four arc-shaped baffles (71); the four arc-shaped baffles (71) are in a cylindrical state when combined, and in a supporting leg state when dispersed.

2. A garden greening planting pit digging device according to claim 1, characterized in that: Four guide rods (21) are fixedly connected to the bottom of the mounting frame (2), the bottom ends of the four guide rods (21) all penetrate the movable plate (5) and extend to the bottom of the movable plate (5), and the outer surfaces of the four guide rods (21) are sleeved with return springs (22). Two control handles (23) are fixedly connected to the mounting frame (2), and a control switch is installed on one of the control handles (23).

3. A garden greening planting pit digging device according to claim 1, characterized in that: The driving member (72) comprises four driving frames (721) hinged to the bottom of the movable plate (5) through brackets, and one end of the four driving frames (721) is hinged to the inner side surfaces of the four arc-shaped baffles (71) respectively; The top of the cross plate (6) is rotatably connected to a first screw rod (722) via a bracket, the outer surface of the first screw rod (722) is threadedly connected to a threaded block (723), and the threaded block (723) is slidably connected to the top of the cross plate (6), and both sides of the threaded block (723) are hinged with inclined expansion rods (724), and one end of the two expansion rods (724) is respectively hinged to the two sides of the movable plate (5).

4. A gardening and planting pit digging device according to claim 1, characterized in that: A positioning anchor rod (711) is fixedly connected to the bottom of the arc-shaped baffle plate (71), and a brush member (712) for cleaning the main spiral drill bit (4) is detachably mounted on the inner side surface of one or four of the arc-shaped baffle plates (71).

5. The gardening and planting pit digging device according to claim 1, characterized in that: A secondary spiral drill bit (41) is detachably mounted on the bottom of the main spiral drill bit (4), and the diameter of the secondary spiral drill bit (41) is smaller than the diameter of the main spiral drill bit (4); The bottom of the main spiral drill bit (4) is provided with a mounting groove (42), and a clamping hole is provided inside the mounting groove (42); the top of the auxiliary spiral drill bit (41) is fixedly connected with a clamping frame (43) for inserting into the mounting groove (42), and the clamping frame (43) is slidably connected with a T-shaped clamping block (44) for inserting into the clamping hole, and an extrusion spring (45) is provided for elastically extruding the T-shaped clamping block (44).

6. The gardening and planting pit digging device according to claim 1, characterized in that: Two movable frames (713) are installed on the outer side surface of one of the arc-shaped baffles (71), and the interiors of the two movable frames (713) are rotatably connected to winding rollers (714), a transparent protective belt (715) is fixedly connected between the outer surfaces of the two winding rollers (714), and the inner side surfaces of the transparent protective belt (715) are in contact with the outer side surfaces of the other three arc-shaped baffles (71), and the outer side surfaces of the other three arc-shaped baffles (71) are fixedly connected to positioning plates (716) for positioning the transparent protective belt (715).

7. The gardening and planting pit digging device according to claim 4, characterized in that: An adjustment component (8) for adjusting the downward movement distance of the mounting frame (2) is arranged on the top of the movable plate (5), and the adjustment component (8) comprises a height-adjustable limiting ring block (81).

8. The gardening and planting pit digging device according to claim 7, characterized in that: The limiting ring block (81) is movably sleeved on the outer surface of the output shaft (3); one side of the movable plate (5) is fixedly connected to an L-shaped frame (82); the top of the L-shaped frame (82) is slidably connected to an adjustment block (83); an inclined adjustment rod (84) is hinged between the adjustment block (83) and the limiting ring block (81); one side of the L-shaped frame (82) is rotatably connected to a second screw rod (85) for horizontally moving the adjustment block (83); the second screw rod (85) is connected to the internal thread of the adjustment block (83).

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