Spiral drill bit with replaceable drill bit

Abstract

The utility model belongs to the technical field of drill bits, particularly relates to a spiral drill bit with a replaceable drill bit, and provides the following scheme aiming at the problems that when an existing spiral drill bit is used, due to the fact that the spiral drill bit often works in a soil layer or a rock, the spiral drill bit is often damaged, and the whole replacement of the spiral drill bit is troublesome, wastes time and is high in cost. Comprising a spiral bit, and the top end face of the spiral bit is fixedly connected with a bit handle. The spiral drill bit is in threaded connection with the adjusting rod by rotating the spiral drill bit, the adjusting lantern ring and the adjusting ring are adjusted according to the size of the drill bit handle, then the second fastening screw is rotated, the adjusting lantern ring and the adjusting ring are fixed to the outer side of the drill bit handle, and therefore the spiral drill bit and the adjusting rod are assembled. According to the arrangement, the spiral bit is convenient to disassemble, assemble and replace at will, and the problems that the spiral bit is often damaged when working in a soil layer or a rock, but the whole replacement of the spiral bit is troublesome, wastes time and is high in cost are solved.

Description

Technical Field

[0001] The utility model relates to a spiral drill bit, in particular to a spiral drill bit with a replaceable drill bit, belonging to the technical field of drill bits. Background Art

[0002] The cutting tools used in the spiral drill bit are shovel-shaped wear-resistant alloy bucket teeth plus pick teeth, which are mainly used for non-circulation drilling in soil layers above the groundwater level, sandy soil layers, dense sand layers containing a small amount of clay, and sand and gravel layers with small particle size; the structure is a straight spiral, and there are three types: bullet-head single spiral, double-head single spiral, and double-head double spiral.

[0003] In the prior art, a high-efficiency rock spiral drill bit with a hardness damping function disclosed in the announcement number CN215718536U includes a spiral drill bit body, and a damping mechanism is installed on the upper inner side of the spiral drill bit body to dampen the hardness of the spiral drill bit during operation. The damping mechanism can effectively enable the spiral drill bit body to slide up and down in cooperation with the telescopic slide rod and the outer damping spring to drill the rock, thereby effectively avoiding the phenomenon that the spiral drill bit body is damaged when the spiral drill bit body hits the rock hard.

[0004] However, in the implementation of relevant technologies, it was found that the spiral drill bit of the above design has the following problems: the above device can effectively avoid the phenomenon that the spiral drill bit body is damaged when drilling the rock with the spiral drill bit body through the shock-absorbing mechanism, but the above device can only increase the service life of the spiral drill bit through the shock-absorbing mechanism. After long-term use, the spiral drill bit often works on soil or rock, which will cause the spiral drill bit to be damaged frequently. Replacing the entire drill bit is not only troublesome and time-consuming, but also costly. In view of this, a spiral drill bit with a replaceable drill bit is provided to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model provides a spiral drill bit with a replaceable drill bit to solve the problem that the spiral drill bit is often damaged due to working on soil or rock during use, and the entire replacement of the spiral drill bit is not only troublesome, time-consuming, but also costly.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions: a spiral drill bit with a replaceable drill bit, comprising a spiral drill bit, a top surface of the spiral drill bit is fixedly connected to a drill bit handle, and the outer side of the drill bit handle is threadedly connected to an adjusting rod;

[0007] The outer side of the bottom end of the adjusting rod is threadedly connected with a fixing ring, the outer side of the fixing ring is fixedly connected with a plurality of fixing rods, and the other side of the fixing rod is fixedly connected with a supporting seat;

[0008] The bottom end surface of the support seat is fixedly connected with two telescopic tubes, the outer side of the telescopic tube is fixedly connected with a fixed block, one side of the fixed block is fixedly connected with an adjusting collar, the inner side of the adjusting collar is slidably connected with an adjusting ring, and the outer surface of the adjusting collar is threadedly connected with two fastening screws.

[0009] As a further solution of the utility model: the top end surface of the support seat is fixedly connected to two cooling water tanks, the bottom end of the telescopic tube is connected to a water spraying port, and the water spraying port is fixedly connected to the fixed block.

[0010] As a further solution of the utility model: an adjusting groove is provided on the outer surface of the adjusting rod, a handle is slidably connected to the outer side of the adjusting rod, and a fastening screw is threadedly connected to the outer surface of the handle.

[0011] As a further solution of the utility model: the bottom end of the fastening screw 1 is fixedly connected to a triangular fixing block through a bearing, a snap-fit ​​structure is formed between the triangular fixing block and the adjusting groove, and the adjusting rod is detachably connected to the handle through the fastening screw 1.

[0012] As a further solution of the utility model: a plug-in block is fixedly connected to the top end surface of the handle, a connecting seat is arranged on the outer side of the plug-in block, and a clamping groove is arranged on the outer surface of the connecting seat.

[0013] As a further solution of the utility model: two positioning columns are fixedly connected to the top of the connecting seat, the plug-in block runs through the interior of the connecting seat, and fixing bolts are threadedly connected to both sides of the connecting seat.

[0014] As a further solution of the utility model: the bottom end of the fixing bolt is fixedly connected to a clamping block through a bearing, the structure of the clamping block is arc-shaped, the bottom end surface of the clamping block is fixedly connected to a sliding block, and the bottom end of the sliding block is slidably connected to a sliding groove.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model rotates the spiral drill bit to thread the spiral drill bit with the adjusting rod, then adjusts the adjusting collar and the adjusting ring according to the size of the drill handle, and then rotates the fastening screw 2 to fix the adjusting collar and the adjusting ring on the outside of the drill handle, thereby completing the assembly between the spiral drill bit and the adjusting rod. This arrangement is convenient for disassembling and replacing the spiral drill bit at will, and avoids the spiral drill bit from being damaged frequently when working in soil or rock. However, replacing the entire spiral drill bit is not only troublesome, but also time-consuming and costly.

[0017] 2. The utility model completes the assembly between the connecting seat and the handle by rotating the fixing bolt, which drives the clamping block to clamp the plug-in block under the sliding connection between the slider and the slide groove, and a rubber pad is provided at the connection between the clamping block and the plug-in block to avoid frequent friction during operation to reduce the service life of the device.

[0018] 3. When the device is working, the cooling water in the cooling water tank is transported to the water spray port through the telescopic pipe. The water mist sprayed from the water spray port can effectively cool the spiral drill bit and prevent the dust from escaping when the spiral drill bit is drilling rocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the split structure of the spiral drill bit and the adjusting rod of the utility model;

[0021] Figure 3 This is a schematic diagram of the cooling water tank, fixing ring and water spray port structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the connecting seat of the utility model.

[0023] In the figure: 1. spiral drill bit; 2. adjusting rod; 3. handle; 4. connecting seat; 5. positioning column; 6. clamping groove; 7. fixing bolt; 8. fastening screw one; 9. cooling water tank; 10. supporting seat; 11. fixing block; 12. water spray nozzle; 13. drill bit handle; 14. adjusting groove; 15. triangular fixing block; 16. plug-in block; 17. fixing ring; 18. fixing rod; 19. telescopic tube; 20. adjusting collar; 21. adjusting ring; 22. fastening screw two; 23. clamping block; 24. slider. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Embodiment 1

[0025] like Figures 1 to 4 As shown, a spiral drill bit with a replaceable drill bit comprises a spiral drill bit 1, a top surface of the spiral drill bit 1 is fixedly connected to a drill handle 13, and an outer side of the drill handle 13 is threadedly connected to an adjusting rod 2;

[0026] The outer side of the bottom end of the adjusting rod 2 is threadedly connected with a fixing ring 17, the outer side of the fixing ring 17 is fixedly connected with a plurality of fixing rods 18, and the other side of the fixing rods 18 is fixedly connected with a supporting seat 10;

[0027] The bottom end surface of the support seat 10 is fixedly connected with two telescopic tubes 19, the outer side of the telescopic tubes 19 is fixedly connected with a fixed block 11, one side of the fixed block 11 is fixedly connected with an adjusting collar 20, the inner side of the adjusting collar 20 is slidably connected with an adjusting ring 21, and the outer surface of the adjusting collar 20 is threadedly connected with a fastening screw 22. Embodiment 2

[0028] In addition to all the technical features of the first embodiment, this embodiment also includes:

[0029] The top surface of the support seat 10 is fixedly connected to two cooling water tanks 9, and the bottom end of the telescopic tube 19 is connected to a water spray port 12. The water spray port 12 is fixedly connected to the fixed block 11. When the device is working, the cooling water in the cooling water tank 9 is transported to the water spray port 12 through the telescopic tube 19. The water mist sprayed from the water spray port 12 can effectively cool the spiral drill bit 1, and at the same time, it can also prevent the spiral drill bit 1 from generating dust when drilling rocks.

[0030] An adjusting groove 14 is provided on the outer surface of the adjusting rod 2, and a handle 3 is slidably connected to the outer side of the adjusting rod 2. A fastening screw 8 is threadedly connected to the outer surface of the handle 3. By rotating the fastening screw 8 and then pulling the adjusting rod 2, the handle 3 can be lengthened to facilitate the accurate positioning of the depth of the hole.

[0031] The bottom end of the fastening screw 8 is fixedly connected to a triangular fixing block 15 through a bearing, and a snap-fit ​​structure is formed between the triangular fixing block 15 and the adjusting groove 14. The adjusting rod 2 is detachably connected to the handle 3 through the fastening screw 8. When the device is adjusted according to the required drilling depth, the fastening screw 8 is rotated, and the fastening screw 8 drives the triangular fixing block 15 to snap-fit ​​with the triangular groove in the adjusting groove 14, thereby completing the assembly between the adjusting rod 2 and the handle 3. Embodiment 3

[0032] In addition to all the technical features of the first embodiment, this embodiment also includes:

[0033] The top end of the handle 3 is fixedly connected with a plug-in block 16, a connecting seat 4 is arranged outside the plug-in block 16, and a clamping groove 6 is provided on the outer surface of the connecting seat 4. The setting of the clamping groove 6 enhances the tightness of the connection between the device and the machine tool.

[0034] Two positioning columns 5 are fixedly connected to the top of the connecting seat 4, and the plug-in block 16 passes through the interior of the connecting seat 4. Both sides of the connecting seat 4 are threadedly connected with fixing bolts 7. By setting two positioning columns 5, after the device is connected to the machine tool, the position can be prevented from deviating during milling, thereby playing a positioning role.

[0035] The bottom end of the fixing bolt 7 is fixedly connected to a clamping block 23 through a bearing. The structure of the clamping block 23 is arc-shaped. The bottom end of the clamping block 23 is fixedly connected to a slider 24. The bottom end of the slider 24 is slidably connected to a slide groove. By rotating the fixing bolt 7, the fixing bolt 7 drives the clamping block 23 to clamp the plug-in block 16 under the sliding connection between the slider 24 and the slide groove, thereby completing the assembly between the connecting seat 4 and the handle 3. A rubber pad is provided at the connection between the clamping block 23 and the plug-in block 16 to avoid frequent friction during operation that reduces the service life of the device.

[0036] Working principle: first, rotate the spiral drill bit 1 to thread the spiral drill bit 1 and the adjusting rod 2, then adjust the adjusting collar 20 and the adjusting ring 21 according to the size of the drill handle 13, then rotate the fastening screw 22 to fix the adjusting collar 20 and the adjusting ring 21 on the outside of the drill handle 13, thereby enhancing the tightness of the connection between the spiral drill bit 1 and the adjusting rod 2, then rotate the fastening screw 8, and then pull the adjusting rod 2, and the fastening screw 8 drives the triangular fixing block 15 to engage with the triangular groove in the adjusting groove 14, thereby completing the assembly between the adjusting rod 2 and the handle 3, making it easy to lengthen the handle 3 and accurately positioning the depth of the hole, and then rotate the fixing bolt 7, and the fixing bolt 7 drives the clamping block 23 to engage with the slider 24 under the sliding connection with the slide groove. The connecting block 16 is clamped to complete the assembly between the connecting seat 4 and the handle 3, and two positioning columns 5 are set at the top of the connecting seat 4. After the machine tool is connected to the clamping groove 6 opened on the surface of the connecting seat 4, the position deviation during milling can be avoided to play a positioning role. Finally, when the device is working, the cooling water in the cooling water tank 9 is transported to the water spray port 12 through the telescopic tube 19. The water mist sprayed from the water spray port 12 can effectively cool the spiral drill bit 1, and at the same time, it can also prevent the spiral drill bit 1 from generating dust when drilling rocks. The cooling water tank 9 is fixed on the support seat 10, the water spray port 12 is fixed on the top of the spiral drill bit 1 through the fixing block 11, and the support seat 10 is fixed on the fixing ring 17 through the fixing rod 18.

[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A spiral drill bit with a replaceable drill bit, comprising a spiral drill bit (1), characterized in that: The top end surface of the spiral drill bit (1) is fixedly connected to a drill bit shank (13), and the outer side of the drill bit shank (13) is threadedly connected to an adjusting rod (2); The outer side of the bottom end of the adjusting rod (2) is threadedly connected to a fixing ring (17), the outer side of the fixing ring (17) is fixedly connected to a plurality of fixing rods (18), and the other side of the fixing rod (18) is fixedly connected to a support seat (10); The bottom end surface of the support seat (10) is fixedly connected to two telescopic tubes (19), the outer side of the telescopic tube (19) is fixedly connected to a fixing block (11), one side of the fixing block (11) is fixedly connected to an adjusting collar (20), the interior of the adjusting collar (20) is slidably connected to an adjusting ring (21), and the outer surface of the adjusting collar (20) is threadedly connected to a second fastening screw (22).

2. The spiral drill bit with a replaceable drill bit according to claim 1, characterized in that: The top end surface of the support seat (10) is fixedly connected to two cooling water tanks (9), the bottom end of the telescopic tube (19) is connected to a water spray port (12), and the water spray port (12) is fixedly connected to the fixed block (11).

3. The spiral drill bit with a replaceable drill bit according to claim 1, characterized in that: An adjustment groove (14) is provided on the outer surface of the adjustment rod (2), a handle (3) is slidably connected to the outer side of the adjustment rod (2), and a fastening screw (8) is threadedly connected to the outer surface of the handle (3).

4. The spiral drill bit with a replaceable drill bit according to claim 3, characterized in that: The bottom end of the fastening screw (8) is fixedly connected to a triangular fixing block (15) via a bearing, and a snap-fit ​​structure is formed between the triangular fixing block (15) and the adjustment slot (14). The adjustment rod (2) is detachably connected to the handle (3) via the fastening screw (8).

5. The spiral drill bit with a replaceable drill bit according to claim 3, characterized in that: The top end surface of the handle (3) is fixedly connected to a plug-in block (16), a connecting seat (4) is arranged on the outside of the plug-in block (16), and a clamping groove (6) is provided on the outer surface of the connecting seat (4).

6. The spiral drill bit with a replaceable drill bit according to claim 5, characterized in that: Two positioning columns (5) are fixedly connected to the top of the connection seat (4), the plug-in block (16) passes through the interior of the connection seat (4), and fixing bolts (7) are threadedly connected to both sides of the connection seat (4).

7. The spiral drill bit with a replaceable drill bit according to claim 6, characterized in that: The bottom end of the fixing bolt (7) is fixedly connected to a clamping block (23) via a bearing, the structure of the clamping block (23) is arc-shaped, the bottom end surface of the clamping block (23) is fixedly connected to a sliding block (24), and the bottom end of the sliding block (24) is slidably connected to a sliding groove.

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