A hole digging device

Abstract

This invention belongs to the field of agricultural equipment and provides a hole-digging device, comprising: a positioning rod located at the bottom; the upper end of the positioning rod being connected to a fixed plate; a rotating groove with an opening at the upper center of the fixed plate; a path rod being a threaded rod with external threads, and a rotating block at the lower end engaging with the rotating groove; a movable block sleeved on the path rod, the movable block having an internal thread matching the external threads of the path rod at its center; multiple push rods hinged to the outer edge of the movable block; the upper end of each push rod being hinged to the outer edge of the movable block, and the lower end being hinged to an expansion plate; a slider at the top of the expansion plate engaging with a sliding groove in the positioning plate; and a handle connected to the path rod. The hole-digging device provided by this invention is easy to use, can quickly and effectively dig holes of suitable depth and diameter, and has uniform specifications. It is especially suitable for strawberry seedling cultivation, avoiding the occurrence of "rooting" and "burying the heart," improving the survival rate of strawberry seedlings, increasing production efficiency, and reducing production costs.

Description

Technical Field

[0001] This invention belongs to the field of agricultural equipment, and specifically relates to a hole-digging device. Background Technology

[0002] When planting strawberry seedlings, a hole needs to be dug in the soil. Currently, the common method is to use a shovel to dig a hole directly and then place the strawberry roots in it. However, because digging relies entirely on the operator's feel, the shape, diameter, and depth of the holes often vary, and the holes are prone to collapsing when the soil is loose. Since strawberry seedlings are generally grown without a substrate (or with only a small amount of substrate), their roots spread out naturally. Planting them in such holes can lead to insufficient root distribution, causing the roots to clump together, forming "root clumps," reducing water absorption, and even breaking the roots, leading to root rot. Furthermore, the core leaf (growing point) of the strawberry seedling is sensitive to soil depth. If the hole is dug too deep, the core leaf will be covered by soil, causing "buried heart," hindering photosynthesis and new leaf sprouting, and in severe cases, leading to heart rot and seedling death. Therefore, there is an urgent need for an efficient and easy-to-use tool for digging holes suitable for planting strawberry seedlings. Summary of the Invention

[0003] To address at least one of the aforementioned problems in the prior art, the present invention provides a hole-digging device, comprising a positioning rod, a fixing plate, a path rod, a positioning disc, and a handle, wherein:

[0004] The positioning rod is located at the lower part of the digging device; the upper end of the positioning rod is connected to the fixing plate;

[0005] The fixed plate is provided with a rotating groove, and an opening is provided at the upper center of the rotating groove;

[0006] The path rod is a threaded rod with external threads; a rotating block is provided at the lower end of the path rod; the rotating block is connected to the lower end of the path rod through a short connecting post; the rotating block is inserted into the rotating groove, and the connecting post passes through an opening provided at the upper center of the rotating groove;

[0007] A movable block is fitted onto the path rod; an internal thread matching the external thread of the path rod is opened inside the center of the movable block; multiple push rods are hinged to the outer edge of the movable block; the upper end of each push rod is hinged to the outer edge of the movable block, and the lower end is hinged to the expansion plate.

[0008] The expansion plate has an arc-shaped cross-section; there are multiple expansion plates, each hinged to a corresponding push rod; each expansion plate has a slider at its top.

[0009] The positioning plate is an inverted pot-shaped structure with its edges curved downwards; the positioning plate has the same number of sliding grooves as the expansion plates, and the multiple sliding grooves are arranged radially along the center of the positioning plate; each sliding groove matches a slider set on the top of the corresponding expansion plate.

[0010] The handle is rotatably connected to the path rod through the center of the positioning plate.

[0011] The hole-digging device provided by this invention has a reasonable structure and is easy to use. It can quickly dig holes of appropriate depth and diameter, and the specifications are uniform. It is especially suitable for digging holes for strawberry seedlings (especially bare-root seedlings). It can effectively avoid the occurrence of "rooting" and "heart burying" phenomena during strawberry seedling cultivation, improve the survival rate of strawberry seedlings, increase production efficiency, and reduce production costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the digging device provided in a preferred embodiment of the present invention.

[0013] Figure 2 This is an exploded structural diagram of a pit-digging device provided in a preferred embodiment of the present invention.

[0014] Figure 3 The schematic diagram of the lower part of the digging device provided in the preferred embodiment of the present invention mainly shows the structure of the positioning rod, the pointed cone, the adjusting rod, and the fixing plate.

[0015] Figure 4 This is a schematic diagram of the middle part of the digging device provided in a preferred embodiment of the present invention, mainly showing the structure of the path rod, push rod, and expansion plate.

[0016] The reference numerals in the figure are explained as follows:

[0017] 1-Positioning rod; 2-Cone; 3-Adjusting rod; 4-Fixing plate; 5-Path rod; 6-Positioning disc; 7-Handle; 8-Anti-slip sleeve; 9-Anti-slip texture; 10-Moving block; 11-Push rod; 12-Expansion plate; 13-Slider; 14-Sliding groove; 15-Rotating block; 16-Rotating groove. Detailed Implementation

[0018] To make the technical solution, objectives, and advantages of the present invention clearer, the present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0019] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. In the fields of electricity and communication, they can refer to a wired connection or a wireless connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] like Figures 1-4 As shown, an embodiment of the present invention provides a hole-digging device, which is particularly suitable for digging planting holes required for strawberry seedling cultivation. The hole-digging device includes a positioning rod 1, a fixing plate 4, a path rod 5, a positioning disc 6, and a handle 7.

[0022] like Figure 1 and Figure 2 As shown, the positioning rod 1 is located at the lower part of the digging device. Preferably, a pointed cone 2 can also be provided at the bottom end of the positioning rod 1. By providing a pointed cone 2 at the bottom end of the positioning rod 1, the tapered structure of the pointed cone 2 can be used to reduce the resistance when inserting into the soil, so that the positioning rod 1 can be quickly and stably fixed in the designated position in the soil.

[0023] The upper end of the positioning rod 1 is connected to the fixing plate 4. In a preferred embodiment, such as... Figure 1 As shown, an adjusting rod 3 can also be installed between the positioning rod 1 and the fixing plate 4. Figure 3As shown, the upper end of the positioning rod 1 is hollow, and the inner wall of the hollow structure has internal threads; the outer wall of the adjusting rod 3 has external threads that match the internal threads of the inner wall of the hollow structure of the positioning rod 1; the upper end of the adjusting rod 3 is fixedly connected to the fixing plate 4. In use, the length of the adjusting rod 3 inside the hollow structure of the positioning rod 1 can be adjusted as needed (to facilitate quick positioning and initial fixation of the pit position, the bottom end of the expansion plate 12 is generally slightly higher than the bottom end of the positioning rod 1, so there will be a small pit deeper into the soil at the bottom center of the dug pit, this small pit is created by the bottom end of the positioning rod 1), thus providing a separate and good cultivation space for the relatively long and robust roots of the strawberry seedlings, effectively avoiding the risk of the long roots of the strawberry seedlings "getting stuck," and improving the survival rate of the strawberry seedlings.

[0024] like Figure 3 As shown, a rotating groove 16 is provided inside the fixed plate 4, and an opening is provided at the upper center of the rotating groove 16.

[0025] like Figure 4 As shown, the path rod 5 is a threaded rod with external threads. A rotating block 15 is provided at the lower end of the path rod 5; the rotating block 15 is connected to the lower end of the path rod 5 via a short connecting post; the rotating block 15 can be inserted into the rotating groove 16, and the connecting post passes through an opening at the upper center of the rotating groove 16, thereby rotatably connecting the fixing plate 4 and the path rod 5 (i.e., the path rod 5 will not drive the fixing plate 4 to rotate when it rotates, but it can rotate axially). Figure 1 (The longitudinal connection in the middle will not fall off). The present invention, through the cooperation of the rotating block 15 and the rotating groove 16, can prevent the fixed plate 4 and the positioning rod 1 from rotating when the path rod 5 rotates, thus preventing the fixed plate 4 and the positioning rod 1 from being damaged by the rotation of the fixed plate 4 and the positioning rod 1. At the same time, it also reduces the resistance during use, saves energy, and improves work efficiency.

[0026] like Figure 4 As shown, a movable block 10 is fitted onto the path rod 5. The movable block 10 has an internal thread at its center that matches the external thread of the path rod 5. When the path rod 5 rotates, the movable block 10 can move up and down along the path rod 5. Multiple movable blocks 10 are hinged to their outer edges (at least three, for example, three, four, six, eight, nine, etc.). Figure 4 There are four push rods 11. The upper end of each push rod 11 is hinged to the outer edge of the moving block 10, and the lower end is hinged to the expansion plate 12 (preferably to the middle or lower part of the expansion plate 12).

[0027] To facilitate operation and better control the diameter of the pit (e.g., the pit used for cultivating strawberry seedlings), the lengths of the path rod 5 and the push rod 11 can be selected according to actual needs, so that when the moving block 10 reaches the bottom of the path rod 5, the diameter of the expanded pit meets the requirements (generally, the diameter of the pit used for cultivating strawberry seedlings is 6-10cm), avoiding situations where the pit is too large or too small due to the operator's intuition.

[0028] like Figure 4 As shown, the cross-section of the expansion plate 12 is arc-shaped. There are multiple expansion plates 12, each hinged to a corresponding push rod 11. A slider 13 is provided at the top of each expansion plate 12. The height of the expansion plate 12 determines the depth of the pit (excluding the small pit created solely by the bottom end of the positioning rod 1 mentioned above). One of the edges of two adjacent expansion plates 12 has a slightly arc-shaped opposite side (towards the opposite side). Figure 4 For example, the shape of the expansion plates 12 (on the side away from the path bar 5) is curved so that when the expansion plates 12 are all contracted to be close to the path bar 5, the adjacent expansion plates 12 can be partially stacked on each other, thereby reducing the diameter of the expansion plates 12 when fully contracted, so as to facilitate the easy and smooth insertion of the components below the positioning plate 6 into the soil.

[0029] Furthermore, the lower end of the expansion plate 12 is located above the cone 2. In actual use, when the soil is relatively compacted, only a portion of the lower end of the expansion plate 12 can be inserted into the soil under the guidance of the cone 2. Then, the path rod 5 can be rotated to expand the expansion plate 12 outward to form a shallower pit. Then, the expansion plate 12 can be contracted, and the positioning rod 1 can be inserted downward again. The above operation can be repeated to further deepen the pit until the required depth is obtained.

[0030] like Figure 1 and Figure 2As shown, the positioning disk 6 is an inverted pot-shaped structure with its edges curved downwards. The diameter of the positioning disk 6 can be larger than the maximum diameter of the pit that the device can dig. The positioning disk 6 has the same number of sliding grooves 14 as the expansion plate 12, and the multiple sliding grooves 14 are arranged radially along the center of the positioning disk 6; each sliding groove 14 matches a slider 13 provided on the top of the corresponding expansion plate 12; each slider 13 has a thinner neck and a wider top, the neck can be inserted into the sliding groove 14, and the top protrudes above the sliding groove 14, thereby movably connecting the expansion plate 12 and the positioning disk 6; when the expansion plate 12 expands outward or contracts inward under the push of the push rod 11, the slider 13 slides along the sliding groove 14. By setting up the positioning disc 6, this invention not only provides support for the upper end of the expansion plate 12, but also prevents the entire device from being inserted further into the soil during actual use. This allows for convenient and effective control of the pit depth, preventing the strawberry seedlings from becoming "rooted" due to the pit being too shallow or "buried" due to the pit being too deep. Furthermore, especially for relatively loose soil, the positioning disc 6 presses against the soil surface. When the expansion plate 12 expands outward and causes the soil to arch upward, the pressure of the positioning disc 6 can appropriately compact the soil, making the walls of the dug pit more compact and greatly reducing the occurrence of pit collapse when removing the device.

[0031] like Figure 1 As shown, the handle 7 is rotatably connected to the path rod 5 through the center of the positioning plate 6 (that is, when the handle 7 is rotated, it will not drive the positioning plate 6 to rotate; for example, the handle 7 can be connected to the center of the positioning plate 6 through a bearing). Thus, when the handle 7 is rotated, the path rod 5 can be rotated, and the moving block 10 can move downward on the path rod 5 (because the expansion plate 12 has a large contact area with the soil, there is a strong rotational resistance. This rotational resistance is transmitted to the moving block 10 through the push rod 11, which can limit the rotation of the moving block 10, so that when the path rod 5 rotates, the moving block 10 can only move up and down along the path rod 5). When the handle 7 is rotated in the opposite direction, the moving block 10 moves upward on the path rod 5, thus realizing the expansion or contraction of the expansion plate 12 by manually rotating the handle 7.

[0032] like Figure 1As shown, the outer surface of the handle 7 can also be provided with an anti-slip sleeve 8. Furthermore, the outer surface of the anti-slip sleeve 8 can also be provided with anti-slip textures 9. In actual use, because operators are easily exposed to water and mud, causing their hands to become slippery, the anti-slip sleeve 8 and anti-slip textures 9 can increase the friction between the operator's hand and the handle 7, preventing slippage and facilitating more effective operation of the device. In another specific embodiment, a transverse through hole can also be provided on the handle 7. A rod can be inserted into the hole as needed. When the rotational resistance of the handle 7 is high (or the operator's hand strength is weak), the handle can be rotated by turning the rod inserted into the hole, thereby reducing the difficulty of using the device and improving efficiency.

[0033] Furthermore, to save effort and improve efficiency, the device may also include a power component. The power component can be, for example, an electric drill, preferably a high-torque, low-speed electric drill; more specifically, the power component can be a high-torque, low-speed electric drill with a rechargeable battery and an internal hexagonal output end. Correspondingly, an external hexagonal structure matching the internal hexagonal can be provided on the top of the handle 7; in use, after inserting the structure below the positioning disc 6 into the soil, the output end of the electric drill is connected to the handle 7, and starting the electric drill will rotate the handle 7, thereby rotating the path rod 5, ultimately achieving the expansion or contraction of the expansion plate 12.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A hole-digging device, comprising a positioning rod, a fixing plate, a path rod, a positioning disc, and a handle, wherein: The positioning rod is located at the lower part of the digging device; the upper end of the positioning rod is connected to the fixing plate; The fixed plate is provided with a rotating groove, and an opening is provided at the upper center of the rotating groove; The path rod is a threaded rod with external threads; a rotating block is provided at the lower end of the path rod; the rotating block is connected to the lower end of the path rod through a short connecting post; the rotating block is inserted into the rotating groove, and the connecting post passes through an opening provided at the upper center of the rotating groove; A movable block is fitted onto the path rod; an internal thread matching the external thread of the path rod is opened inside the center of the movable block; multiple push rods are hinged to the outer edge of the movable block; the upper end of each push rod is hinged to the outer edge of the movable block, and the lower end is hinged to the expansion plate. The expansion plate has an arc-shaped cross-section; there are multiple expansion plates, each hinged to a corresponding push rod; each expansion plate has a slider at its top. The positioning plate is an inverted pot-shaped structure with downward-curving edges; the positioning plate has the same number of sliding grooves as the expansion plates, and the multiple sliding grooves are arranged radially along the center of the positioning plate; each sliding groove matches a slider set on the top of the corresponding expansion plate. The handle is rotatably connected to the path rod through the center of the positioning plate.

2. The hole-digging device according to claim 1, characterized in that: The bottom end of the positioning rod is provided with a pointed cone.

3. The digging device according to claim 1 or 2, characterized in that: An adjusting rod is provided between the positioning rod and the fixing plate; The upper end of the positioning rod is a hollow structure, and the inner wall of the hollow structure is provided with internal threads; the outer wall of the adjusting rod is provided with external threads that match the internal threads of the inner wall of the hollow structure of the positioning rod; the upper end of the adjusting rod is fixedly connected to the fixing plate.

4. The hole-digging device according to claim 3, characterized in that: One of the edges of two adjacent expansion plates has a shape that curves slightly toward the opposite side of the arc.

5. The digging device according to claim 4, characterized in that: The lower end of the expansion plate is located at the upper part of the pointed cone.

6. The hole-digging device according to claim 5, characterized in that: The diameter of the positioning plate is larger than the maximum diameter of the hole that the digging device can dig.

7. The hole-digging device according to claim 6, characterized in that: Each slider has a narrow neck and a wide top, the neck being able to insert into the sliding groove, and the top protruding above the sliding groove.

8. The hole-digging device according to claim 7, characterized in that: The handle is connected to the center of the positioning plate via a bearing.

9. The hole-digging device according to claim 8, characterized in that: The outer surface of the handle is also provided with an anti-slip sleeve; The outer surface of the anti-slip sleeve is also provided with anti-slip texture.

10. The hole-digging device according to claim 8, characterized in that: A horizontal through hole is provided on the handle; a rod is installed inside the hole; Preferably, the digging device further includes a power component; The power unit is a hand drill with an internal hexagon output end, and the top of the handle is provided with an external hexagon structure that matches the internal hexagon.

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