Impact type drill bit with triangular head

Abstract

The utility model relates to the technical field of impact drill bits, in particular to an impact drill bit with a triangular head, which comprises a shell, a damping structure arranged inside the shell, a cover arranged below the shell, an inlet arranged on the inner wall of the outer side of the shell, a threaded block connected with the inside of the inlet through threads, and a sliding groove formed in the sliding groove. The sliding grooves are formed in the inner wall of one side of the shell, the two sliding grooves are symmetrically formed about the vertical center line of the shell, baffles are fixed to the outer walls of the tops of the sliding grooves, buffer pads are glued to the centers of the bottoms of the baffles, springs are arranged in the sliding grooves, and the tops of the springs are fixedly connected with the inner walls of the tops of the sliding grooves. A moving plate is fixed to the bottom of the spring and is in sliding connection with the sliding groove. According to the utility model, the damping structure is arranged, and the drill bit is fixed at the bottom of the movable plate through the mounting plate bolt before the movable plate is connected in the sliding chute in a sliding manner.

Description

Technical Field

[0001] The utility model relates to the technical field of impact drill bits, in particular to an impact drill bit with a triangular head. Background Art

[0002] Impact drills work by rotating and impacting. A single impact is very slight, but the frequency of more than 40,000 impacts per minute can produce continuous force. When the impact drill is working, there is an adjustment knob on the drill chuck, which can adjust the ordinary hand drill and impact drill. Impact drills use the gears on the inner shaft to jump against each other to achieve the impact effect, and can be used for natural stone or concrete.

[0003] The patent specification with announcement number CN209395046U discloses an impact-type carbide stone drill bit, including a drill body, a drill shank located at the rear end of the drill body and a carbide head located at the front end of the drill body, the drill body is in the shape of a hollow cylinder, a conical connecting cover is provided on the rear end face of the drill body, the drill shank is connected to the conical connecting cover, the conical tip of the conical connecting cover faces the drill shank, the carbide head is divided into a circumferential impact head and a radial impact head, the wedge-shaped impact edge line at the front end of the circumferential impact head points to the rotation direction of the drill body, and the wedge-shaped impact edge line at the front end of the radial impact head points to the radial direction of the drill body.

[0004] However, in the implementation of relevant technologies, it was found that the impact carbide stone drill bit of the above design has the following problems: a conical connecting cover is provided between the drill shank and the drill body in the device, and the conical structure is used to transmit the force applied to the drill shank to the drill body, but the drill shank, the drill body and the conical connecting cover are integrated. When the force applied is greater than the bearing range of the drill shank and the drill body, the entire device will be scrapped, and parts cannot be replaced individually, resulting in a waste of materials. In view of this, a Chinese medicine filtering and impurity removal device is provided to overcome the above defects. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes an impact drill bit with a triangular head.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an impact drill bit with a triangular head comprises a shell, a shock-absorbing structure is arranged inside the shell, a cover is arranged below the shell, an inlet is opened on the outer inner wall of the shell, and a threaded block is connected to the inside of the inlet by a thread, the shock-absorbing structure comprises a slide groove, the slide groove is opened on one side inner wall of the shell, and the slide groove is symmetrically arranged in two groups about the vertical center line of the shell, a baffle is fixed to the top outer wall of the slide groove, and a buffer pad is glued to the bottom center of the baffle, a spring is arranged inside the slide groove, and the top of the spring is fixedly connected to the top inner wall of the slide groove, a movable plate is fixed to the bottom of the spring, and the movable plate is slidably connected to the slide groove, and a first rubber block is fixed to the bottom of the movable plate.

[0007] As a further description of the above technical solution: the solid shock-absorbing structure also includes a second rubber block, which is fixed to the top of the cover, and two groups of the second rubber blocks are symmetrically arranged about the vertical center line of the cover, and the contact between the first rubber block and the second rubber block can offset the force of the spring rebound.

[0008] As a further description of the above technical solution: a mounting plate is fixed to the bottom center of the movable plate by bolts, and a drill bit is fixed to the bottom of the mounting plate, and the drill bit can be easily installed and removed by fixing with bolts.

[0009] As a further description of the above technical solution: a limiting plate is fixed to an outer wall of one side of the cover, and two groups of limiting plates are symmetrically arranged about the vertical center line of the cover, and the limiting plates are in contact with the outer walls on both sides of the shell and fixed by bolts, wherein the inner card of the cover is provided with a through hole, and the cover and the shell are fixed by bolts for easy disassembly and cleaning of the interior of the shell.

[0010] As a further description of the above technical solution: the drill bit passes through the through hole opened inside the cover, and a low-carbon steel core is fixed to the inner wall of the drill bit. The low-carbon steel core arranged inside the drill bit can enhance the strength of the drill bit.

[0011] As a further description of the above technical solution: a threaded barrel is fixed to the inner wall of the bottom of the drill bit, and a triangular block is arranged below the drill bit, wherein the triangular block and the threaded barrel are connected by threads, and the direction of rotation between the triangular block and the threaded barrel is opposite to the direction of rotation of the drill bit.

[0012] As a further description of the above technical solution: the top outer wall of the shell is fixed with a fixing rod by bolts, and a fixing plate is fixed on the top of the fixing rod, and fixing holes are opened inside the fixing plate, wherein two groups of fixing holes are symmetrically arranged about the vertical center line of the fixing plate, and the device can be conveniently installed on the processing machine through the fixing holes.

[0013] The utility model has the following beneficial effects: by providing a shock-absorbing structure, before the movable plate is slidably connected in the slide groove, the drill bit is fixed to the bottom of the movable plate by means of the mounting plate bolts, and when the movable plate is slidably connected in the slide groove opened inside the shell, the drill bit contacts the bottom of the spring fixed inside the slide groove, and the cover passes through the drill bit and is fixed to the shell through the through hole opened inside, so that the first rubber block fixed at the bottom of the movable plate contacts the second rubber block, and when the drill bit is impacted, the movable plate moves upward to compress the spring, and the top of the movable plate contacts the buffer pad glued to the bottom of the baffle plate to offset the impact force generated by the drill bit, and when the movable plate is not subjected to the impact force, it moves downward under the rebound force of the spring to make the first rubber block contact the second rubber block, thereby offsetting the rebound force. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the shell structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the shock absorbing structure of the utility model.

[0018] Legend:

[0019] 1. Shell; 2. Shock-absorbing structure; 201. Slide; 202. Baffle; 203. Buffer pad; 204. Spring; 205. Moving plate; 206. First rubber block; 207. Second rubber block; 3. Mounting plate; 4. Drill bit; 5. Low-carbon steel core; 6. Threaded barrel; 7. Triangular block; 8. Cover; 9. Fixing rod; 10. Fixing plate; 11. Fixing hole; 12. Threaded block; 13. Inlet; 14. Limiting plate; 15. Through hole. DETAILED DESCRIPTION

[0020] 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.

[0021] Embodiment 1, refer to Figure 1-4The utility model provides an impact drill with a triangular head: comprising a shell 1, the bottom of the shell 1 is open, a shock absorbing structure 2 is arranged inside the shell 1, a cover 8 is arranged below the shell 1, an inlet 13 is opened on the outer inner wall of the shell 1, and a threaded block 12 is connected to the inside of the inlet 13 through a thread, and the lubricating oil can be poured into the inside of the shell 1 through the inlet 13 by opening the threaded block 12, so as to enhance the lubrication effect;

[0022] The shock absorbing structure 2 includes a slide groove 201, which is opened on an inner wall of one side of the shell 1, and two groups of slide grooves 201 are symmetrically arranged about the vertical center line of the shell 1, a baffle 202 is fixed to the top outer wall of the slide groove 201, and a buffer pad 203 is glued to the bottom center of the baffle 202, a spring 204 is arranged inside the slide groove 201, and the top of the spring 204 is fixedly connected to the top inner wall of the slide groove 201, a movable plate 205 is fixed to the bottom of the spring 204, and the movable plate 205 is slidably connected to the slide groove 201, and a first rubber block 206 is fixed to the bottom of the movable plate 205.

[0023] Embodiment 2: In addition to all the technical features of Embodiment 1, this embodiment also includes:

[0024] The solid shock-absorbing structure 2 also includes a second rubber block 207, which is fixed to the top of the cover 8, and two groups of the second rubber blocks 207 are symmetrically arranged about the vertical center line of the cover 8. The contact between the first rubber block 206 and the second rubber block 207 can offset the force of the spring 204 when it rebounds.

[0025] As a further implementation scheme of the above technical scheme: a mounting plate 3 is fixed to the bottom center of the movable plate 205 by bolts, and a drill bit 4 is fixed to the bottom of the mounting plate 3, and the drill bit 4 is conveniently installed and removed by fixing with bolts.

[0026] A limiting plate 14 is fixed to the outer wall of one side of the cover 8, and two groups of limiting plates 14 are symmetrically arranged about the vertical center line of the cover 8, and the limiting plates 14 are in contact with the outer walls on both sides of the shell 1 and fixed by bolts, wherein a through hole 15 is provided inside the cover 8, and the cover 8 and the shell 1 are fixed by bolts for easy disassembly and cleaning of the interior of the shell 1.

[0027] In the specific implementation, before the movable plate 205 is slidably connected in the slide groove 201, the drill bit 4 is fixed to the bottom of the movable plate 205 by bolts of the mounting plate 3, and the movable plate 205 is slidably connected in the slide groove 201 opened in the shell 1 to contact the bottom of the spring 204 fixed in the slide groove 201, the cover 8 passes through the drill bit 4 through the through hole 15 opened inside, and then is fixed to the shell 1 through the limiting plates 14 fixed on both sides of the cover 8 by bolts, so that the first rubber block 206 fixed at the bottom of the movable plate 205 contacts the second rubber block 207, and when the drill bit 4 is impacted, the movable plate 205 moves upward to contact the spring 204. The top of the movable plate 205 contacts the buffer pad 203 glued to the bottom of the baffle 202 to offset the impact force generated by the drill bit 4. When the movable plate 205 is not subjected to the impact force, it moves downward due to the rebound force of the spring 204 to make the first rubber block 206 contact the second rubber block 207 to offset the rebound force. When the drill bit 4 is used for a long time, the lubrication on the drill bit 4 is reduced. The threaded block 12 is opened, and the lubricating oil is poured into the interior of the housing 1 through the inlet 13. The lubricating oil flows to the drill bit 4 through the through hole 15 opened in the cover 8 to enhance the lubrication. When it is necessary to clean the interior of the housing 1, the cover 8 can be opened directly by the bolts.

[0028] Embodiment 3, in addition to all the technical features of Embodiment 1, this embodiment also includes: the drill bit 4 passes through the through hole 15 opened inside the cover 8, and a low-carbon steel core 5 is fixed to the inner wall of the drill bit 4. The low-carbon steel core 5 arranged inside the drill bit 4 can enhance the strength of the drill bit 4.

[0029] A threaded barrel 6 is fixed to the inner wall of the bottom of the drill bit 4 , and a triangular block 7 is provided below the drill bit 4 , wherein the triangular block 7 and the threaded barrel 6 are connected by threads, and the direction of rotation between the triangular block 7 and the threaded barrel 6 is opposite to the rotation direction of the drill bit 4 .

[0030] A fixing rod 9 is fixed to the top outer wall of the shell 1 by bolts, and a fixing plate 10 is fixed to the top of the fixing rod 9, and a fixing hole 11 is opened inside the fixing plate 10, wherein two groups of fixing holes 11 are symmetrically arranged about the vertical center line of the fixing plate 10, and the device can be conveniently installed on the processing machine through the fixing holes 11.

[0031] During specific implementation, a low-carbon steel core 5 is provided inside the drill bit 4 to enhance the strength of the drill bit 4; a threaded barrel 6 is fixed at the bottom of the drill bit 4, and a triangular block 7 is threadedly connected thereto; the direction of rotation between the triangular block 7 and the threaded barrel 6 is opposite to the direction of rotation of the drill bit 4; a fixing rod 9 is fixed to the top outer wall of the outer shell 1 by bolts; a fixing hole 11 is provided in a fixing plate 10 fixed to the top of the fixing rod 9, so as to facilitate fixing the device on a processing machine.

[0032] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An impact drill bit with a triangular head, comprising a housing (1), characterized in that: A shock absorbing structure (2) is arranged inside the shell (1), a cover (8) is arranged below the shell (1), an inlet (13) is opened on the outer inner wall of the shell (1), and a threaded block (12) is connected to the inside of the inlet (13) via a thread. The shock absorbing structure (2) comprises a slide groove (201), the slide groove (201) being provided on an inner wall of one side of the housing (1), and two groups of the slide grooves (201) being symmetrically arranged about the vertical center line of the housing (1), a baffle (202) being fixed to the top outer wall of the slide groove (201), and a buffer pad (203) being glued to the bottom center of the baffle (202), a spring (204) being arranged inside the slide groove (201), and the top of the spring (204) being fixedly connected to the top inner wall of the slide groove (201), a movable plate (205) being fixed to the bottom of the spring (204), and the movable plate (205) being slidably connected to the slide groove (201), and a first rubber block (206) being fixed to the bottom of the movable plate (205).

2. The impact drill bit with a triangular head according to claim 1, characterized in that: The shock absorbing structure (2) further comprises a second rubber block (207), the second rubber block (207) being fixed on the top of the cover (8), and the second rubber block (207) being arranged in two groups symmetrically about the vertical center line of the cover (8).

3. The impact drill bit with a triangular head according to claim 1, characterized in that: A mounting plate (3) is fixed to the center of the bottom of the movable plate (205) via bolts, and a drill bit (4) is fixed to the bottom of the mounting plate (3).

4. The impact drill bit with a triangular head according to claim 1, characterized in that: A limiting plate (14) is fixed to an outer wall of one side of the cover (8), and two groups of limiting plates (14) are symmetrically arranged about the vertical center line of the cover (8), and the limiting plates (14) are in contact with the outer walls of both sides of the housing (1) and fixed by bolts, wherein the inner card of the cover (8) is provided with a through hole (15).

5. The impact drill bit with a triangular head according to claim 4, characterized in that: The drill bit (4) passes through a through hole (15) provided inside the cover (8), and a low-carbon steel core (5) is fixed to the inner wall of the drill bit (4).

6. The impact drill bit with a triangular head according to claim 5, characterized in that: A threaded barrel (6) is fixed to the inner wall of the bottom of the drill bit (4), and a triangular block (7) is arranged below the drill bit (4), wherein the triangular block (7) and the threaded barrel (6) are connected via threads.

7. The impact drill bit with a triangular head according to claim 1, characterized in that: A fixing rod (9) is fixed to the top outer wall of the housing (1) by means of bolts, a fixing plate (10) is fixed to the top of the fixing rod (9), and fixing holes (11) are provided inside the fixing plate (10), wherein two groups of fixing holes (11) are symmetrically arranged about the vertical center line of the fixing plate (10).

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