Drill bit structure for digging device

Abstract

The utility model discloses a drill bit structure for a digging device, which comprises a cylindrical drill body, mounting holes are formed in the bottom end of the cylindrical drill body in an annular array manner by taking the central axis of the cylindrical drill body as the axis, drill bit seats are mounted in the mounting holes, and diamond drill bits are mounted at the end parts of the drill bit seats in a sliding manner. A sliding hole is formed in the position, corresponding to the position between the two drill bit seats, of the bottom end of the cylindrical drill body, a positioning rod is slidably mounted in the sliding hole, and diamond drill bits are mounted at the ends of the drill bit seats, and then the drill bit seats provided with the diamond drill bits are mounted in mounting holes. At the moment, the steel plate is clamped in the clamping groove in the end of the diamond drill bit, positioning installation between the diamond drill bit and the drill bit bases is facilitated, the drill bit bases provided with the diamond drill bit are installed in the installation holes, and the positions of the two drill bit bases can be fixed and detached only by operating a single positioning screw. And the drill bit seat is convenient to mount and dismount.

Description

TECHNICAL FIELD

[0001] The utility model relates to drill bit technical field, concretely is a drill bit structure for boring device. BACKGROUND

[0002] Drill bit is the key tool of broken rock and formed borehole, always is in the forefront position in the drilling process, the drill bit used in boring drilling is various, and the cylinder drill is one of them.

[0003] In the "a cylinder drill structure and rotary drilling rig including multiple combined drill bits" of authorized announcement number "CN211115799U", drill bit tooth is detachably connected with drill bit shell through bolt, and wear block is detachably connected with drill bit tooth, which is convenient for installation and replacement, but in the installation and replacement process, the installation and replacement of single drill bit tooth need to operate two bolts, and the installation and replacement of drill bit tooth are still relatively cumbersome. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a drill bit structure for boring device to solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a drill bit structure for boring device, including cylinder drill body, the bottom end of cylinder drill body is annular array type and is provided with mounting hole with the central axis of cylinder drill body as the shaft, the inside of mounting hole is installed with drill bit seat, the end of drill bit seat is installed with diamond drill bit, the bottom end of cylinder drill body is provided with sliding hole between the position corresponding to two drill bit seats, the inside of sliding hole is installed with positioning rod, the position corresponding to positioning rod of one side of drill bit seat is provided with positioning hole, and positioning hole and positioning rod are slidably inserted.

[0006] As a further preferred embodiment of the present technical solution, the bottom end of the cylinder drill body is integrally provided with a steel plate inside the mounting hole, the steel plate is arranged through the middle part of the drill bit seat, one end of the diamond drill bit is arranged inside the drill bit seat, a clamping groove is formed at the end of the diamond drill bit, and the clamping groove and the steel plate are slidably inserted.

[0007] As a further preferred embodiment of the present technical solution, the end of the steel plate and the clamping groove are both provided with a chamfer.

[0008] As a further preferred embodiment of the present technical solution, a trapezoidal block is slidably installed inside the bottom end of the cylinder drill body, an inclined surface is formed at the end of the positioning rod, and the trapezoidal block is in extrusion contact with the inclined surface.

[0009] As a further preferred embodiment of the present technical solution, a positioning screw is threadedly installed at the position corresponding to the trapezoidal block at the bottom end of the cylinder drill body, and the end of the positioning screw is rotatably connected with the trapezoidal block.

[0010] As a further preferred of the technical solution, the bottom end outside of the barrel drill body is fixedly installed with a protective block in an annular array type with the central axis of the barrel drill body as the shaft.

[0011] As a further preferred of the technical solution, the protective block is provided with a height corresponding to the positioning screw.

[0012] The utility model provides a drill bit structure for opening and digging device, has the following beneficial effects:

[0013] (1) the utility model discloses a diamond drill bit is installed at the end of drill bit seat, and then the diamond drill bit is installed in the inside of mounting hole, and the steel plate will be clamped in the clamping groove of the end of diamond drill bit, and the positioning installation between diamond drill bit and drill bit seat is convenient.

[0014] (2) the utility model discloses a diamond drill bit is installed in the inside of mounting hole, and then through the rotation positioning screw, the trapezoidal block is moved, and the positioning screw also extrudes the trapezoidal block, and the bevel on the trapezoidal block extrudes the inclined surface of the end of positioning rod, and the positioning rod is slid in the inside of slide hole, and is inserted into the inside of positioning hole, and is used for the positioning and fixing of drill bit seat in the inside of mounting hole, when the diamond drill bit is replaced, through reverse rotation positioning screw, the trapezoidal block cancels the extrusion of the end of positioning rod, and then uses pincers and other tools to slide the positioning rod out of the inside of positioning hole, can cancel the inside of mounting hole from drill bit seat, and can take out the diamond drill bit from the end of drill bit seat, and only needs to operate single positioning screw to fix and disassemble the position of two drill bit seats, and the installation and disassembly of drill bit seat are convenient. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic diagram of the utility model;

[0016] Figure 2 It is the whole explosion structure schematic diagram of the utility model;

[0017] Figure 3 It is Figure 2 The enlarged view of A in the middle;

[0018] Figure 4 It is the local section view explosion structure schematic diagram of the utility model;

[0019] Figure 5 It is Figure 4 The enlarged view of B in the middle;

[0020] In the figure: 1, the cylinder drill body; 2, mounting hole; 3, drill bit seat; 4, diamond drill bit; 5, sliding hole; 6, positioning rod; 7, positioning hole; 8, steel plate; 9, clamping groove; 10, chamfer; 11, trapezoidal block; 12, inclined surface; 13, positioning screw; 14, protection block. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0022] The utility model provides technical scheme: as Figures 1 to 5 The utility model discloses a drill bit structure for boring device, including cylinder drill body 1, the bottom of cylinder drill body 1 is with the middle axis of cylinder drill body 1 as the shaft annular array and is provided with mounting hole 2, the inside installation of mounting hole 2 is equipped with drill bit seat 3, the end of drill bit seat 3 is slidably installed with diamond drill bit 4, the bottom of cylinder drill body 1 is provided with sliding hole 5 between the position corresponding to two drill bit seat 3, the inside sliding installation of sliding hole 5 is equipped with positioning rod 6, one side of drill bit seat 3 is provided with positioning hole 7 corresponding to the position of positioning rod 6, positioning hole 7 and positioning rod 6 slidingly connect, install diamond drill bit 4 at the end of drill bit seat 3, then install drill bit seat 3 with diamond drill bit 4 in the inside of mounting hole 2, control positioning rod 6 to slide in the inside of sliding hole 5, and drive positioning rod 6 to insert into the inside of positioning hole 7, for the positioning and fixing of drill bit seat 3 in the inside of mounting hole 2, when replacing diamond drill bit 4, positioning rod 6 slides out of the inside of positioning hole 7, can cancel drill bit seat 3 from the inside of mounting hole 2, and can take out diamond drill bit 4 from the end of drill bit seat 3, the installation and replacement of drill bit seat 3 are convenient.

[0023] As Figures 1 to 5 The bottom of cylinder drill body 1 is integrally provided with steel plate 8 corresponding to the inside of mounting hole 2, steel plate 8 is arranged through the middle part of drill bit seat 3, one end of diamond drill bit 4 is arranged in the inside of drill bit seat 3, the end of diamond drill bit 4 is provided with clamping groove 9, and clamping groove 9 and steel plate 8 slidingly connect.

[0024] When installing drill bit seat 3 with diamond drill bit 4 in the inside of mounting hole 2, steel plate 8 will be clamped in the inside of clamping groove 9 at the end of diamond drill bit 4, which is convenient for positioning between diamond drill bit 4 and drill bit seat 3.

[0025] As Figures 1 to 5 The end of steel plate 8 and clamping groove 9 are all provided with chamfer 10.

[0026] It is convenient to clamp steel plate 8 in the inside of clamping groove 9 at the end of diamond drill bit 4, which is convenient for positioning the position of diamond drill bit 4.

[0027] AsFigures 1 to 5 As shown in the figure, the bottom end of the barrel drill body 1 is internally slidably mounted with a trapezoidal block 11, and the end of the positioning rod 6 is provided with an inclined surface 12, and the trapezoidal block 11 is in extrusion contact with the inclined surface 12.

[0028] By controlling the movement of the trapezoidal block 11, the inclined angle on the trapezoidal block 11 will extrude the inclined surface 12 at the end of the positioning rod 6, so as to drive the positioning rod 6 to slide in the sliding hole 5 and insert into the positioning hole 7.

[0029] As shown in the figure, the bottom end of the barrel drill body 1 is internally slidably mounted with a trapezoidal block 11, and the end of the positioning rod 6 is provided with an inclined surface 12, and the trapezoidal block 11 is in extrusion contact with the inclined surface 12. Figures 1 to 5

[0030] By rotating the positioning screw 13, the trapezoidal block 11 will be moved, and at the same time, the positioning screw 13 will extrude the trapezoidal block 11, so as to fix the position of the trapezoidal block 11 relative to the positioning screw 13.

[0031] As shown in the figure, the bottom end of the barrel drill body 1 is internally slidably mounted with a trapezoidal block 11, and the end of the positioning rod 6 is provided with an inclined surface 12, and the trapezoidal block 11 is in extrusion contact with the inclined surface 12. Figures 1 to 5

[0032] The wear degree of the drill bit seat 3 can be effectively reduced, and the service life is prolonged.

[0033] As shown in the figure, the bottom end of the barrel drill body 1 is internally slidably mounted with a trapezoidal block 11, and the end of the positioning rod 6 is provided with an inclined surface 12, and the trapezoidal block 11 is in extrusion contact with the inclined surface 12. Figures 1 to 5 The protection of the positioning screw 13 by the protection block 14 prevents the wear of the positioning screw 13 by the inner wall of the hole during the drilling process.

[0034] The utility model provides a kind of drill bit structure for boring device, specific working principle as follows:

[0035] When the device is used, diamond drill bit 4 is installed at the end of drill bit seat 3, then drill bit seat 3 with diamond drill bit 4 is installed in mounting hole 2, at this time, steel plate 8 is clamped in the slot 9 at the end of diamond drill bit 4, which is convenient for positioning between diamond drill bit 4 and drill bit seat 3, then by rotating positioning screw 13, trapezoidal block 11 is moved, positioning screw 13 also extrudes trapezoidal block 11, the inclined angle on trapezoidal block 11 extrudes the inclined surface 12 at the end of positioning rod 6, which drives positioning rod 6 to slide in sliding hole 5 and insert into positioning hole 7, for positioning and fixing drill bit seat 3 in mounting hole 2.

[0036]

[0037] ​​​When the diamond drill bit 4 is replaced, the trapezoidal block 11 will cancel the extrusion of the end of the positioning rod 6 by reversing the positioning screw 13, and then the positioning rod 6 is slid out of the inside of the positioning hole 7 by using a tool such as a pliers, the drill bit seat 3 can be cancelled from the inside of the mounting hole 2, and the diamond drill bit 4 can be taken out from the end of the drill bit seat 3.

[0038] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drill bit structure for a boring apparatus comprising a barrel drill body (1), characterised in that: The bottom end of the barrel drill body (1) is provided with an installation hole (2) in an annular array type with the central axis of the barrel drill body (1) as the shaft, the inside of the installation hole (2) is provided with a drill bit seat (3), the end of the drill bit seat (3) is slidingly provided with a diamond drill bit (4), the bottom end of the barrel drill body (1) is provided with a sliding hole (5) corresponding to the position between the two drill bit seats (3), the inside of the sliding hole (5) is slidingly provided with a positioning rod (6), one side of the drill bit seat (3) is provided with a positioning hole (7) corresponding to the position of the positioning rod (6), and the positioning hole (7) and the positioning rod (6) are slidingly inserted.

2. A bit structure for a boring apparatus according to claim 1, wherein: The bottom end of the barrel drill body (1) is integrally provided with a steel plate (8) corresponding to the inside of the installation hole (2), the steel plate (8) is arranged through the middle part of the drill bit seat (3), one end of the diamond drill bit (4) is arranged in the inside of the drill bit seat (3), the end of the diamond drill bit (4) is provided with a clamping groove (9), and the clamping groove (9) and the steel plate (8) are slidingly inserted.

3. A bit structure for a boring apparatus according to claim 2, wherein: The end of the steel plate (8) and the clamping groove (9) are both provided with a chamfer (10).

4. A bit structure for a boring apparatus according to claim 2, wherein: The bottom end of the barrel drill body (1) is slidingly provided with a trapezoidal block (11), the end of the positioning rod (6) is provided with an inclined surface (12), and the trapezoidal block (11) is in extrusion contact with the inclined surface (12).

5. A bit structure for a boring apparatus according to claim 4, wherein: The bottom end of the barrel drill body (1) is provided with a positioning screw (13) corresponding to the position of the trapezoidal block (11), and the end of the positioning screw (13) is rotatably connected with the trapezoidal block (11).

6. A bit structure for a boring apparatus according to claim 5, wherein: The bottom end of the barrel drill body (1) is provided with a protection block (14) outside in an annular array type with the central axis of the barrel drill body (1) as the shaft.

7. A bit structure for a boring apparatus according to claim 6, wherein: The height of the protection block (14) corresponds to the positioning screw (13).

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