Portable ground auger with shock absorption and rebound prevention structure

Abstract

The utility model discloses a portable ground auger with a shock absorption anti-rebound structure, which comprises a ground auger main body and a drill bit, a driving shaft is arranged on the output end of the ground auger main body, a groove is axially arranged on the outer wall surface of the driving shaft, a limit groove is arranged on the inner wall surface of the groove, and the limit groove is arranged on the outer wall surface of the driving shaft. A positioning opening communicated with the outside is formed in the end, away from the ground auger body, of the limiting groove, a positioning rod is installed on the drill bit, the other end of the positioning rod penetrates through the positioning opening, extends into the limiting groove and is provided with a limiting block, the outer side face of the limiting block is sunken inwards to form a frame-shaped groove, and a damping piece is arranged in the frame-shaped groove. The drill bit is simple in structure, in the process of pressing down the drill bit, the buffer effect can be achieved through the compression spring, the friction damping function can be achieved through the damping piece, the vibration amplitude is reduced, and after the cover plate is lifted up, the drill bit can be rapidly disassembled, and the compression spring can be replaced so that the drill bit can adapt to different environments.

Description

Technical Field

[0001] This utility model relates to the field of drilling technology, specifically to a portable drilling rig with a shock-absorbing and anti-rebound structure. Background Technology

[0002] A ground drill is a mechanical tool used for drilling holes in the ground, widely used in agriculture, horticulture, construction, geological exploration, and many other fields. It uses a power unit to drive a drill bit to rotate, drilling holes in soil, rock, and other media to meet the operational needs of different scenarios.

[0003] However, current drilling rigs have simple structures and lack shock absorption functions. This causes the reaction force generated by the drill bit during the pressing process to cause hand vibration, resulting in discomfort during operation. Furthermore, the connection between the drill bit and the main body of the drilling rig is relatively troublesome, affecting the disassembly and replacement of the drill bit. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a portable ground drill with a shock-absorbing and anti-rebound structure, which facilitates the replacement of the drill bit and can play a shock-absorbing role, so as to solve the problems mentioned in the background art.

[0005] This utility model is achieved through the following technical solution: a portable ground drill with a shock-absorbing and anti-rebound structure, comprising a ground drill body and a drill bit. A drive shaft is installed on the output end of the ground drill body. An axial groove is provided on the outer wall of the drive shaft. A limiting groove is provided on the inner wall of the groove. A positioning port communicating with the outside is provided at the end of the limiting groove away from the ground drill body. A positioning rod is installed on the drill bit. The other end of the positioning rod extends through the positioning port into the limiting groove and is fitted with a limiting block. The outer side of the limiting block is recessed inward to form a frame-shaped groove. A damping element is provided in the frame-shaped groove. A shock-absorbing connector is installed at the end of the limiting block away from the positioning rod. A cover plate is slidably arranged in the groove to cover the positioning port and the positioning groove.

[0006] As a preferred technical solution, the shock-absorbing connector includes a baffle, a screw, a compression spring, and a connecting block. The end of the limiting block away from the positioning rod is provided with a first screw hole, the screw is threaded into the first screw hole, and one end of the screw is fixedly connected to the baffle. The end of the damping component away from the positioning rod is blocked by the baffle. One end of the compression spring is installed on the outer surface of the baffle, and the other end is fixedly connected to the connecting block. The end of the limiting groove away from the positioning port is provided with a connecting groove, and the connecting block is inserted into the connecting groove.

[0007] As a preferred technical solution, a limiting ring is installed on the outside of the drive shaft. The inner ring surface of the limiting ring contacts the outer side surface of the cover plate. A limiting part protrudes from the outer side surface of the cover plate and contacts the limiting ring. A second screw hole is provided at one end of the cover plate. A third screw hole is provided on the inner wall surface of the groove, which is directly opposite the second screw hole. Both the second and third screw holes are threaded with hand-tightening bolts that position the cover plate.

[0008] As a preferred technical solution, the inner side of the cover plate is arranged to contact the outer side of the limiting block and the damping component.

[0009] As a preferred technical solution, the width of the limiting groove is set to be greater than the width of the positioning opening, and the outer side of the limiting block and the outer side of the damping component are set to make frictional contact with the inner wall of the positioning groove.

[0010] As a preferred technical solution, the damping element is made of rubber material and has a rectangular structure.

[0011] As a preferred technical solution, the width of the positioning rod matches the width of the positioning opening.

[0012] The beneficial effects of this utility model are: the utility model has a simple structure. During the process of pressing down the drill bit, the compression spring can play a buffering role, and the damping component can play a friction damping role, reducing the amplitude of vibration. Furthermore, after lifting the cover plate, the drill bit can be quickly disassembled, and the compression spring can be replaced to adapt to different environments. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a side view of the present invention;

[0016] Figure 3 This is a schematic diagram of the structure of this utility model after the cover plate is removed;

[0017] Figure 4 This is a schematic diagram of the drill bit and limiting block of this utility model;

[0018] Figure 5 This is a schematic diagram of the drive shaft of this utility model.

[0019] The components include: 1. Drill body; 2. Drive shaft; 3. Drill bit; 4. Positioning rod; 5. Groove; 6. Cover plate; 7. Limiting ring; 8. Hand-tightening bolt; 9. Limiting part; 10. Limiting groove; 11. Positioning port; 12. Limiting block; 13. Connecting block; 14. Damping component; 15. Baffle; 16. Compression spring; 17. First screw hole; 18. Connecting groove; 19. Third screw hole. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0022] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this utility model discloses a portable ground drill with a shock-absorbing and anti-rebound structure, comprising a ground drill body 1 and a drill bit 3. A drive shaft 2 is installed on the output end of the ground drill body 1. A groove 5 is axially provided on the outer wall of the drive shaft 2. A limiting groove 10 is provided on the inner wall of the groove 5. A positioning port 11 communicating with the outside is provided at one end of the limiting groove 10 away from the ground drill body 1. A positioning rod 4 is installed on the drill bit 3. The other end of the positioning rod 4 extends through the positioning port 11 into the limiting groove 10 and is fitted with a limiting block 12. The outer side of the limiting block 12 is recessed inward to form a frame-shaped groove. A damping element 14 is provided in the frame-shaped groove. A shock-absorbing connector is installed at one end of the limiting block 12 away from the positioning rod 4. A cover plate 6 is slidably arranged in the groove 5 to cover the positioning port 11 and the positioning groove.

[0024] In this embodiment, the shock-absorbing connector includes a baffle 15, a screw, a compression spring 16, and a connecting block 13. The end of the limiting block 12 away from the positioning rod 4 is provided with a first screw hole 17. The screw is threaded into the first screw hole 17, and one end of the screw is fixedly connected to the baffle 15. The end of the damping member 14 away from the positioning rod 4 is blocked by the baffle 15. One end of the compression spring 16 is installed on the outer surface of the baffle 15, and the other end is fixedly connected to the connecting block 13. The end of the limiting groove 10 away from the positioning port 11 is provided with a connecting groove 18, and the connecting block 13 is inserted into the connecting groove 18.

[0025] In this embodiment, a limiting ring 7 is installed on the outside of the drive shaft 2. The inner ring surface of the limiting ring 7 is in contact with the outer side surface of the cover plate 6. A limiting part 9 protrudes from the outer side surface of the cover plate 6 and is in contact with the limiting ring 7. A second screw hole is provided at one end of the cover plate 6. A third screw hole 19 is provided on the inner wall surface of the groove 5 opposite to the second screw hole. Both the second screw hole and the third screw hole 19 are threaded with a hand-tightening bolt 8 that positions the cover plate 6. The threaded connection facilitates the disassembly of the hand-tightening bolt. After the hand-tightening bolt is removed, the cover plate can move smoothly.

[0026] The limiting ring increases the limiting function on the outer side of the cover plate, preventing the cover plate from moving out of the groove. The groove has guide grooves on both sides, and the cover plate protrudes on both sides to form guide strips. The guide strips are slidably set in the guide grooves, further increasing the contact area with the drive shaft and preventing the cover plate from opening directly outward.

[0027] In this embodiment, the inner side of the cover plate 6 is in contact with the outer side of the limiting block 12 and the damping member 14, and the cover plate can restrict the limiting block in the limiting groove.

[0028] In this embodiment, the width of the limiting groove 10 is greater than the width of the positioning port 11. The outer side of the limiting block 12 and the outer side of the damping member 14 are in frictional contact with the inner wall of the positioning groove. The friction between them and the damping member can play a buffering role, greatly reducing the reaction.

[0029] In this embodiment, the damping element 14 is made of rubber material and is arranged in a rectangular structure;

[0030] The damping component is inserted into the frame groove. Therefore, after the limiting block is removed from the limiting groove, the baffle can be rotated. After the screw is removed from the first screw hole, the baffle can be removed from the end face of the limiting block. After the baffle is removed, the damping component can be directly removed from the frame groove, which facilitates its replacement. Moreover, after the baffle is removed, the compression spring can be replaced simultaneously.

[0031] In this embodiment, the width of the positioning rod 4 matches the width of the positioning port 11. The drill bit can be positioned by the positioning rod and the limiting block, thus preventing the drill bit from rotating in the limiting groove or positioning groove.

[0032] When the drill bit is pressed down by the handle on the main body of the drill, the reaction force generated by the drill bit can push the positioning rod and the limiting block. The movement of the limiting block can squeeze the compression spring. The elasticity of the compression spring can play a buffering role. In addition, the movement of the limiting block also drives the damping component. The friction between the damping component and the limiting groove can play a damping role, reducing the vibration amplitude, playing an anti-reverse vibration effect, and increasing the comfort of the drill operation.

[0033] The installation and removal of the drill bit is relatively simple. During removal, the hand-tightening bolt can be rotated directly. After the hand-tightening bolt is removed from the third screw hole, the cover plate can move upward along the groove until it is removed from the outside of the limiting groove. After the cover plate is no longer blocked, the positioning rod, limiting block and connecting block can be directly removed outward to complete the removal of the drill bit.

[0034] Conversely, the positioning rod on the new drill bit can be inserted into the positioning port, the limiting block can be inserted into the limiting groove, and the connecting block can be inserted into the connecting groove. The compression spring can be fixed by the connecting block, preventing it from loosening up and down.

[0035] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A portable ground drill with a shock-absorbing and anti-rebound structure, characterized in that: The utility model provides a kind of earth drill, including earth drill body (1) and drill bit (3), drive shaft (2) is installed on the output end of earth drill body (1), recess (5) is axially provided on the outer wall surface of drive shaft (2), limiting slot (10) is provided on the inner wall surface of recess (5), limiting slot (10) is provided with the positioning mouth (11) being communicated with outside at the end away from earth drill body (1), positioning rod (4) is installed on drill bit (3), the other end of positioning rod (4) extends into limiting slot (10) by positioning mouth (11), and limiting block (12) is installed, the outside of limiting block (12) is recessed to form frame slot, damping member (14) is provided in frame slot, damping member (14) is installed with shock-absorbing connecting piece at the end away from positioning rod (4) of limiting block (12), cover plate (6) is slidably arranged in recess (5) and covers positioning mouth (11) and positioning slot.

2. The portable earth drill with a shock-absorbing anti-rebound structure according to claim 1, characterized in that: Shock-absorbing connecting piece includes baffle (15), screw rod, compression spring (16) and connecting block (13), limiting block (12) is provided with first screw hole (17) at the end away from positioning rod (4), screw rod is threadedly connected in first screw hole (17), one end of screw rod is fixedly connected with baffle (15), damping member (14) is arranged away from positioning rod (4) by baffle (15), one end of compression spring (16) is installed on the outside of baffle (15), and the other end is fixedly connected with connecting block (13), limiting slot (10) is provided with connecting groove (18) at the end away from positioning mouth (11), and connecting block (13) is inserted into connecting groove (18).

3. The portable earth drill with a shock-absorbing anti-rebound structure according to claim 1, characterized in that: Limiting ring (7) is installed outside drive shaft (2), the inner ring surface of limiting ring (7) is in contact with the outside of cover plate (6), the outside of cover plate (6) is protruded to form limiting portion (9), limiting portion (9) is in contact with limiting ring (7), one end of cover plate (6) is provided with second screw hole, the inner wall surface of recess (5) is provided with third screw hole (19) opposite to second screw hole, and hand screw bolt (8) for positioning cover plate (6) is threadedly connected in second screw hole and third screw hole (19).

4. The portable earth drill with a shock-absorbing anti-rebound structure according to claim 1, characterized in that: The inside of cover plate (6) is in contact with the outside of limiting block (12) and damping member (14).

5. The portable earth drill with a shock-absorbing anti-rebound structure according to claim 1, characterized in that: The width of limiting slot (10) is greater than the width of positioning mouth (11), and the outside of limiting block (12) and the outside of damping member (14) are in frictional contact with the inner wall surface of limiting slot.

6. The portable earth drill with a shock-absorbing anti-rebound structure according to claim 1, characterized in that: Damping member (14) is made of rubber material, and damping member (14) is in rectangular structure.

7. The portable earth drill with a shock-absorbing anti-rebound structure according to claim 1, characterized in that: The width of positioning rod (4) matches the width of positioning mouth (11).

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