A small pit digging device for planting fruit trees
By designing a bracket, sleeve, and pressing column structure, the cone spike can be stored and quickly deployed, solving the wear and safety hazards caused by exposed cone spikes, and improving the service life and safety of small digging devices.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 临朐县乡村振兴促进中心
- Filing Date
- 2025-09-09
- Publication Date
- 2026-08-04
AI Technical Summary
The spikes of existing small hole-digging devices are exposed when not in use, which leads to accelerated wear, affects service life, and poses safety hazards during transportation.
A structure including a bracket, a sleeve, a pressing column, and a moving column was designed. The conical spike can be stored inside the bracket and limited by a spring to avoid long-term exposure, and can be quickly unfolded and fixed when needed.
It effectively protects the spikes, extends service life, eliminates safety risks during transportation, and improves equipment stability and safety.
Smart Images
Figure CN224583791U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hole-digging devices, and in particular to a small hole-digging device for planting fruit trees. Background Technology
[0002] In the process of fruit and forestry planting, digging holes is one of the key steps. Small hole-digging devices are widely used in family orchards, small planting bases and other scenarios due to their small size and flexible operation.
[0003] During use, the continuous vibration of the equipment can cause displacement. Existing small digging devices fix the equipment by installing spikes at the bottom and inserting them into the soil. However, when the equipment is not in use, these spikes, which are exposed for a long time, will wear down due to environmental factors, thus affecting their service life. At the same time, the exposed sharp spikes during transportation can pose a safety hazard to people. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a small-scale pit-digging device for fruit and forest planting.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: A small hole-digging device for fruit and forest planting includes a support frame. The top of the front and rear ends of the right side of the support frame is provided with an installation groove. The front and rear ends of the left side of the support frame are movably connected to movable columns, which are located inside the support frame. Multiple through grooves are provided on both sides of the movable columns and the front and rear sides of the support frame. Locking bolts are provided in the through grooves. A hole-digging component is provided on the upper side of one side of the support frame. A lifting component is movably connected to one side of the hole-digging component. The lifting component is fixed to one side of the support frame.
[0006] A sleeve is fixedly installed in the mounting slot. A pressing column is installed inside the sleeve. The pressing column is slidably connected to a sliding groove through multiple protrusions on its surface. The sliding groove is located on the surface of the sleeve. A movable column is installed inside the pressing column. A spring is pinched between the bottom end of the movable column and the bottom end of the mounting slot.
[0007] In addition, the preferred structure is that the two movable columns are hollow columnar structures, and handles are fixedly installed on the left side of the two movable columns.
[0008] In addition, a preferred structure is that the bottom end of the sleeve is provided with multiple limiting grooves.
[0009] In addition, a preferred structure is that the bottom end of the pressing column has multiple serrated grooves.
[0010] In addition, a preferred structure is that multiple limiting blocks are fixedly installed on the surface of the movable column, and a conical spike is fixedly connected to the bottom end of the movable column.
[0011] Furthermore, a preferred structure is that the thickness of the limiting block is greater than the thickness of the lower part of the pressing column.
[0012] The beneficial effects of this utility model are as follows: by installing a bracket and a sleeve, a pressing column is slidably engaged inside the sleeve, a movable column is built into the lower part of the pressing column, a conical spike is fixed to the bottom end of the movable column, and the bottom end of the movable column is limited in the bracket by a spring, so that the conical spike can be retracted into the bracket when idle, avoiding shortening its service life due to long-term exposure, and eliminating the potential risk of injury during transportation. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of a small hole-digging device for fruit and forest planting proposed in this utility model; Figure 2 This is a schematic diagram of the sleeve structure of a small hole-digging device for fruit and forest planting proposed in this utility model; Figure 3 This is a schematic diagram of the cone-shaped structure of a small pit-digging device for fruit and forest planting proposed in this utility model; Figure 4 This is a schematic diagram of the pressing column structure of a small hole-digging device for fruit and forest planting proposed in this utility model; Figure 5 This is a schematic diagram of the movable column structure of a small pit-digging device for fruit and forest planting proposed in this utility model; Figure 6 This is a schematic diagram of the sleeve limiting groove structure of a small pit-digging device for fruit and forest planting proposed in this utility model; Figure 7 This is a schematic diagram of the cone-shaped folding structure of a small pit-digging device for fruit and forest planting proposed in this utility model.
[0014] In the diagram: 1. Bracket; 11. Mounting slot; 12. Movable column; 13. Through slot; 14. Locking bolt; 15. Handle; 2. Sleeve; 21. Slide groove; 22. Limiting groove; 23. Pressing column; 24. Protrusion; 25. Serrated groove; 26. Moving column; 27. Limiting block; 28. Conical spike; 29. Spring; 3. Digging assembly; 4. Lifting assembly. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0016] Reference Figure 1-7A small hole-digging device for fruit and forest planting includes a support 1, a sleeve 2, a hole-digging component 3, and a lifting component 4. The support 1 has mounting grooves 11 at the top of the front and rear ends on the right side, which penetrate one side of the support 1. Movable columns 12 are movably connected to the front and rear ends on the left side of the support 1. The movable columns 12 are located inside the support 1. Multiple through slots 13 are provided on both sides of the movable columns 12 and on the front and rear sides of the support 1. Locking bolts 14 are installed in the through slots 13. The hole-digging component 3 is located on the upper side of one side of the support 1. The lifting component 4 is movably connected to one side of the hole-digging component 3 and is fixed to one side of the support 1. In addition, the movable columns 12 on both sides are hollow columnar structures, and handles 15 are fixedly installed on the left side of the movable columns 12 on both sides.
[0017] A sleeve 2 is fixedly installed in the mounting groove 11. Multiple limiting grooves 22 are opened at the bottom end of the sleeve 2. A pressing post 23 is set inside the sleeve 2. The length of the pressing post 23 is greater than the length of the sleeve 2. Multiple serrated grooves 25 are opened at the bottom end of the pressing post 23. The pressing post 23 is slidably connected to the sliding groove 21 through multiple protrusions 24 on its surface. The protrusions 24 are fixedly installed in the lower middle part of the surface of the pressing post 23. The sliding groove 21 is opened on the surface of the sleeve 2. The sliding groove 21 is connected together with the general limiting groove 22. A moving post 26 is set inside the pressing post 23. Multiple limiting blocks 27 are fixedly installed on the surface of the moving post 26. A conical spike 28 is fixedly connected to the bottom end of the moving post 26. A spring 29 is connected between the bottom end of the moving post 26 and the bottom end of the mounting groove 11. The spring 29 is located outside the conical spike 28. In addition, the thickness of the limiting block 27 is greater than the thickness of the lower middle part of the pressing post 23.
[0018] In this embodiment, during use, the digging device is transported to the digging location. By holding the handle 15, the tires at both ends of the left side of the bracket 1 are pushed, causing the digging device to move. Once the digging device reaches the digging location, the pressing column 23 is pressed. The pressing column 23 moves downward through the protrusion 24 on its surface within the groove 21 on the surface of the sleeve 2. At this time, the serrated groove 25 at the bottom of the pressing column 23 causes the limiting block 27 on the surface of the moving column 26 to move within the groove 21. The moving column 26 moves downwards, causing the bottom cone 28 to move downwards as well. At this time, the spring 29 at the bottom of the moving column 26 is compressed as it moves downwards. When the top of the pressing column 23 contacts the top of the mounting groove 11, the bottom of the pressing column 23 will extend beyond the bottom of the sleeve 2 by a certain distance. When the pressing column 23 is released, the spring 29 at the bottom of the moving column 26 will rebound, causing the moving column 26 and the pressing column 23 to move upwards. When the limit on the surface of the moving column 26... The positioning block 27 contacts the limiting groove 22 at the bottom of the sleeve 2. Since the thickness of the limiting block 27 is greater than the thickness of the pressing post 23, and the outer diameter of the pressing post 23 is equal to the inner diameter of the sleeve 2, and the top of the limiting block 27 and the top of the limiting groove 22 are triangular arc-shaped, as the moving post 26 moves upward, the limiting block 27 will slide into the limiting groove 22 through the arc of the limiting groove 22, and drive the moving post 26 to rotate. When the triangular vertex of the limiting block 27 contacts the triangular vertex of the limiting groove 22, then... The movable column 26 will be limited and fixed in the limiting groove 22 at the bottom of the sleeve 2. At this time, the pressing column 23 is located above the movable column 26. At this time, the cone 28 at the bottom of the movable column 26 will extend out of the mounting groove 11 and be limited at the bottom of the bracket 1. Then, the digging device can be limited and fixed above the soil by inserting the cone 28 into the soil. Then, the digging component 3 and the lifting component 4 will be started. Then, the digging component 3 will move downward on the lifting component 4 to dig a hole in the underground soil.
[0019] After digging is completed, to retract the spike 28 into the mounting slot 11 of the bracket 1, press down the pressing post 23. The serrated groove 25 at the bottom of the pressing post 23 causes the limiting block 27 on the surface of the moving post 26 to move downward. The moving post 26 then causes the spring 29 at its bottom to compress. When the top of the pressing post 23 contacts the top of the mounting slot 11, the bottom of the pressing post 23 will extend a certain distance beyond the bottom of the sleeve 2. Then, release the pressing post 23. At this time, the spring 29 will rebound, causing the moving post 26 to move upward. Because the limiting block 27 on the surface of the moving post 26 is in place when the spike 28 extends, the pressing post 23 will retract. The top of block 27 contacts the top of the limiting groove 22. Since half of the limiting groove 22 contacts the sliding groove 21, the limiting block 27 will slide into the sliding groove 21 through the limiting groove 22 as the moving column 26 moves upward. Then, the spring 29 will rebound, driving the moving column 26 and the pressing column 23 to move upward. When the top of the protrusion 24 on the surface of the pressing column 23 contacts the top of the sliding groove 21, the limiting block 27 will contact the serrated groove 25, causing the spring 29 to stop rebounding. At this time, the cone 28 at the bottom of the moving column 26 will be stored in the mounting groove 11.
[0020] When the operator's height does not match the height of the digging device, the digging device cannot be pushed well by the handle 15. The distance between the movable columns 12 and the bracket 1 can be adjusted by removing the locking bolts 14 in the through slots 13 on both sides of the movable columns 12. When the appropriate height is reached, the movable columns 12 can be fixed to the bracket 1 by the locking bolts 14, and the digging device can then be pushed and used by the handle 15.
[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A small-sized hole digging device for planting trees and fruits, comprising a support (1), characterized in that, The bracket (1) has mounting slots (11) at the top of the front and rear ends on the right side, and movable columns (12) are movably connected to the front and rear ends on the left side. The movable columns (12) are located inside the bracket (1). Multiple through slots (13) are provided on both sides of the movable columns (12) and the front and rear sides of the bracket (1). Locking bolts (14) are provided in the through slots (13). A pit-digging component (3) is provided on the upper side of one side of the bracket (1). A lifting component (4) is movably connected to one side of the pit-digging component (3). The lifting component (4) is fixed to one side of the bracket (1). A sleeve (2) is fixedly installed in the mounting groove (11). A pressing column (23) is provided in the sleeve (2). The pressing column (23) is slidably connected in the sliding groove (21) through multiple protrusions (24) on its surface. The sliding groove (21) is located on the surface of the sleeve (2). A moving column (26) is provided in the pressing column (23). A spring (29) is connected to the bottom end of the moving column (26) and the bottom end of the mounting groove (11).
2. The small-sized hole digging device for planting trees and fruits according to claim 1, characterized in that, The movable columns (12) on both sides are hollow column structures, and handles (15) are fixedly installed on the left side of the movable columns (12).
3. The small-sized hole digging device for planting trees and fruits according to claim 1, characterized in that, The bottom end of the sleeve (2) is provided with multiple limiting grooves (22).
4. The small-sized hole digging device for planting trees and fruits according to claim 1, characterized in that, The bottom end of the pressing column (23) is provided with multiple serrated grooves (25).
5. The small-sized hole digging device for planting trees and fruits according to claim 1, characterized in that, Multiple limiting blocks (27) are fixedly installed on the surface of the movable column (26), and a cone spike (28) is fixedly connected to the bottom end of the movable column (26).
6. The small-sized hole digging device for planting trees and fruits according to claim 1, characterized in that, The thickness of the limiting block (27) is greater than the thickness of the lower part of the pressing column (23).