Sleeve type electric hammer drill bit

Abstract

The utility model provides a sleeve type electric hammer drill bit which comprises an installation block and a drill bit body, clamping grooves are formed in the bottom of the periphery of the drill bit body, a plurality of inserting holes are formed in the bottom of the periphery of the drill bit body, a fixing mechanism is arranged in an inner cavity of the installation block, the fixing mechanism comprises a fixing pipe and an inserting groove, and the fixing pipe is connected with the inserting groove. The fixing pipe is arranged in an inner cavity of the mounting block, a mounting groove is formed in the bottom of an inner cavity of the fixing pipe, and a micro motor is fixedly mounted in an inner cavity of the mounting groove. According to the drilling device, the movable plate and the inserting block cannot move towards the inner side due to vibration generated by drilling work, then the drill bit body can be fixed through the inserting block, the stability of the drill bit body during installation is improved, the possibility that the drill bit body falls off due to vibration is effectively avoided, and the safety of equipment during use is improved; the use by operators is convenient.

Description

Technical Field

[0001] The utility model relates to a sleeve-type electric hammer drill bit, belonging to the technical field of electric hammer drills. Background Art

[0002] The "impact drill" mainly uses rotary cutting, and the impact mechanism with impact force drives the impact drill bit. While driving the drill bit to rotate, it also has a reciprocating hammering motion in a direction perpendicular to the rotating surface of the drill bit. It is used for drilling holes in concrete, bricks, tiles, marble and other materials. The "electric hammer" drives the steel chisel with impact force and is used for operations such as grooving, opening large holes or breaking concrete in concrete, bricks and other materials.

[0003] A Chinese public patent (publication number: CN 218452946 U) discloses an assembled electric hammer drill bit, which relates to the technical field of electric hammer drill bits, including a drill bit shank, a fixing groove is provided at one end of the drill bit shank, a fixing rod is movably inserted at one end of the drill bit shank, a drill bit body is fixedly connected at one end of the fixing rod, a threaded groove is provided on the inner wall of the fixing groove, a threaded rod is movably connected to the inner wall of the drill bit shank, a double groove is provided on the outer wall of the drill bit body, a clamping block is movably sleeved at one end of the drill bit body, and a fixing head is fixedly connected at one end of the clamping block. The present application facilitates the assembly of the drill bit shank, the drill bit body and the fixing head by means of the clamping connection between the fixing rod and the fixing groove, the magnetic connection between the first magnet and the second magnet, the clamping connection between the clamping block and the clamping groove, and the magnetic connection between the first magnet and the second magnet. It is not necessary to replace the drill bit as a whole, and it is convenient to disassemble and replace the part that is more severely worn, which is convenient to reduce waste, and is conducive to reducing the loss and production cost of the device, and improving the flexibility of the device.

[0004] The drill bit on the top of the electric hammer drill may be worn flat after long-term use. At this time, the drill bit can no longer drill holes in the material, so the drill bit needs to be replaced. The drill bit is usually fixed with bolts when the drill head is turned. However, when the drill bit is drilling holes in the material, the drill bit will produce more violent vibrations. These vibrations may be transmitted to the bolts through the drill bit, and the bolts themselves do not have the force to rotate inward by themselves. After long-term use, the bolts may gradually move out of the screw grooves due to vibration. During the hole drilling work, the drill bit may be disconnected from the electric hammer drill due to the falling of the bolts, causing the drill bit to fly out from the connection of the electric hammer drill due to the inertia during rotation. At this time, the flying drill bit has a large kinetic energy, which can easily cause safety accidents, resulting in reduced safety during work and inconvenience for operators.

[0005] For this reason, a sleeve-type electric hammer drill bit is proposed. Utility Model Content

[0006] In view of this, the utility model provides a sleeve-type electric hammer drill bit to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0007] The technical solution of the utility model is implemented as follows: a sleeve-type electric hammer drill bit, comprising a mounting block and a drill body, wherein the bottom of the drill body is provided with a card slot, and the bottom of the drill body is provided with a plurality of jacks;

[0008] A fixing mechanism is arranged in the inner cavity of the mounting block, and the fixing mechanism includes a fixing tube and a slot. The fixing tube is arranged in the inner cavity of the mounting block, and a mounting slot is provided at the bottom of the inner cavity of the fixing tube. A micro motor is fixedly installed in the inner cavity of the mounting slot, and a bidirectional screw is fixedly connected to the output end of the micro motor, and threaded disks are threadedly connected to the upper two sides of the surface of the bidirectional screw, and movable rods are movably connected around the two threaded disks, and movable plates are excessively connected to the outer sides of the eight movable rods, and a plurality of plug blocks are fixedly installed on the outer sides of the four movable plates.

[0009] Further preferably, the slots are all opened around the surface of the fixed pipe, and the plugs penetrate the inner cavity of the slots and are plugged into the inner cavity of the jack.

[0010] Further preferably, limiting rods are fixedly installed around the bottom of the inner cavity of the fixed tube, and the inner surfaces of the two threaded disks are movably connected to the surfaces of the four limiting rods around them.

[0011] Further preferably, clamping blocks are fixedly installed around the outer side of the fixing tube, and the four clamping blocks are clamped in the inner cavities of the four clamping slots.

[0012] Further preferably, a plug-in slot is provided on the top of the mounting block, the fixing tube is fixedly mounted on the bottom of the inner cavity of the plug-in slot, and the bottom of the drill body is plugged into the inner cavity of the plug-in slot.

[0013] Further preferably, the jack and the slot are in the same horizontal plane, and the slot and the jack are connected to each other.

[0014] Further preferably, a connecting shaft is fixedly mounted on the bottom of the mounting block, and a flange is fixedly mounted on the bottom of the connecting shaft.

[0015] Further preferably, a protective baffle is welded on the surface of the drill body, and a rubber protective pad is bonded in the inner cavity of the protective baffle.

[0016] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0017] First, the utility model is provided with a fixing mechanism. When the drill body needs to be replaced, the bidirectional screw is first rotated through the output of the micro motor. The threaded disk moves outward due to the rotation of the bidirectional screw. As the distance between the threaded disks becomes farther, the movable rod flips inward due to the pulling of the threaded disk. At this time, the movable plate moves inward due to the flipping of the movable rod, and simultaneously drives the insert block to move inward, so that it is moved out of the inner cavity of the insertion hole. Then, the drill body is pulled upward to complete the disassembly work. When the drill body needs to be fixed, the bidirectional screw is synchronously rotated in the opposite direction through the reverse output of the micro motor. At this time, the threaded disk moves along the bidirectional The threads on the surface of the screw move inward, and as the threaded disk moves, the movable rod flips outward and simultaneously pushes the movable plate to move outward. At this time, the plug block moves with the movable plate and is plugged into the inner cavity of the socket again to complete the fixation of the drill body. Compared with fixing with bolts, the micro motor will continuously apply rotational force, so that the movable plate and the plug block will not move inward due to the vibration generated by the hole opening work, and then the drill body can be fixed by the plug block, which improves the stability of the drill body during installation, effectively avoids the possibility of the drill body falling off due to vibration, improves the safety of the equipment during use, and is convenient for operators to use.

[0018] Second, the utility model can limit the moving direction of the plug block by setting a slot, so as to avoid the plug block from being offset when moving and being unable to be plugged into the inner cavity of the plug hole, thereby affecting the fixing work of the drill bit body. By setting a limit rod, the movement of the threaded disk can be limited to avoid the threaded disk rotating synchronously with the bidirectional screw when the bidirectional screw rotates, thereby affecting the fixing work of the drill bit body. By setting a clamping block, the position of the drill bit body inserted in the inner cavity of the plug slot can be limited, so that the slot and the plug hole are in the same horizontal plane, which is convenient for the plug block to fix the drill bit body. By setting the plug slot, the bottom of the drill bit body can be conveniently sleeved on the outside of the fixed tube, so that the drill bit The main body and the mounting block can be at the same vertical angle when connected, so as to avoid the drill body being offset when installing the drill body, thereby affecting the subsequent hole opening work; by setting the slot and the socket, since the two are at the same horizontal plane and interconnected, the plug block can freely enter the inner cavity of the socket, thereby improving the passability of the plug block and enhancing the convenience of fixing the plug block to the drill body; by setting the flange, the overall equipment can be easily connected to the output end of the electric hammer drill for easy assembly; by setting the protective baffle, the drill body can block the waste material splashed during hole drilling when drilling an object, so as to avoid splashing onto the body surface of the operator and causing injury.

[0019] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a three-dimensional front view structural schematic diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the drill bit disassembly structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the mounting block of the utility model;

[0024] Figure 4 This is a schematic diagram of the internal structure of the fixed pipe of the utility model;

[0025] Figure 5 It is a schematic diagram of the fixing mechanism structure of the utility model.

[0026] Figure numerals: 1. mounting block; 2. fixing mechanism; 201. fixing tube; 202. mounting groove; 203. micro motor; 204. bidirectional screw; 205. threaded disk; 206. movable rod; 207. movable plate; 208. plug-in block; 209. slot; 210. limiting rod; 211. clamping block; 3. connecting shaft; 4. flange; 5. drill body; 6. protective baffle; 7. socket; 8. clamping slot; 9. plug-in slot. DETAILED DESCRIPTION

[0027] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0028] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0029] Example 1

[0030] like Figure 1-5As shown, the embodiment of the utility model provides a sleeve-type electric hammer drill bit, comprising a mounting block 1 and a drill body 5, wherein the bottom of the drill body 5 is provided with a card slot 8, and the bottom of the drill body 5 is provided with a plurality of plug holes 7;

[0031] A fixing mechanism 2 is arranged in the inner cavity of the mounting block 1, and the fixing mechanism 2 includes a fixing tube 201 and a slot 209. The fixing tube 201 is arranged in the inner cavity of the mounting block 1, and a mounting slot 202 is provided at the bottom of the inner cavity of the fixing tube 201. A micro motor 203 is fixedly installed in the inner cavity of the mounting slot 202, and a bidirectional screw 204 is fixedly connected to the output end of the micro motor 203, and threaded disks 205 are threadedly connected to the upper two sides of the surface of the bidirectional screw 204, and movable rods 206 are movably connected around the two threaded disks 205, and movable plates 207 are multiply connected to the outer sides of the eight movable rods 206, and multiple plug blocks 208 are fixedly installed on the outer sides of the four movable plates 207.

[0032] By setting the fixing mechanism 2, when the drill body 5 needs to be replaced, the output of the micro motor 203 is first used. At this time, the bidirectional screw 204 rotates, and the threaded disk 205 moves outward due to the rotation of the bidirectional screw 204. As the distance between the threaded disks 205 becomes farther, the movable rod 206 flips inward due to the pulling of the threaded disk 205. At this time, the movable plate 207 moves inward due to the flipping of the movable rod 206, and synchronously drives the plug block 208 to move inward, so that it is removed from the inner cavity of the insertion hole 7, and then the drill body 5 is pulled upward to complete the disassembly work. When the drill body 5 needs to be fixed, the reverse output of the micro motor 203 is used to make the bidirectional screw 204 rotate synchronously in the opposite direction. At this time, the threaded disk 205 moves along the bidirectional screw 204. The thread on the surface of the screw rod 204 moves inward, and as the threaded disk 205 moves, the movable rod 206 flips outward and simultaneously pushes the movable plate 207 to move outward. At this time, the plug block 208 moves with the movable plate 207 and is plugged into the inner cavity of the socket 7 again to complete the fixation of the drill body 5. Compared with the use of bolts for fixation, the micro motor 203 will continue to apply rotational force, so that the movable plate 207 and the plug block 208 will not move inward due to the vibration generated by the hole opening work, and then the drill body 5 can be fixed by the plug block 208, which improves the stability of the drill body 5 during installation, effectively avoids the possibility of the drill body 5 falling off due to vibration, improves the safety of the equipment during use, and is convenient for operators to use.

[0033] Example 2

[0034] In one embodiment, the slots 209 are all opened around the surface of the fixed tube 201, the plug block 208 passes through the inner cavity of the slot 209 and is inserted into the inner cavity of the jack 7, the limiting rods 210 are fixedly installed around the bottom of the inner cavity of the fixed tube 201, the inner surfaces of the two threaded disks 205 are movably connected to the surfaces of the four limiting rods 210, and the outer sides of the fixed tube 201 are fixedly installed with clamping blocks 211, and the four clamping blocks 211 are clamped in the inner cavities of the four clamping slots 8. A plug-in slot 9 is provided on the top of the mounting block 1, a fixing tube 201 is fixedly installed at the bottom of the inner cavity of the plug-in slot 9, the bottom of the drill body 5 is plugged into the inner cavity of the plug-in slot 9, the socket 7 and the slot 209 are in the same horizontal plane, and the slot 209 and the socket 7 are connected to each other, a connecting shaft 3 is fixedly installed at the bottom of the mounting block 1, a flange 4 is fixedly installed at the bottom of the connecting shaft 3, a protective baffle 6 is welded on the surface of the drill body 5, and a rubber protective pad is bonded in the inner cavity of the protective baffle 6.

[0035] By providing the slot 209, the moving direction of the plug block 208 can be limited to prevent the plug block 208 from offsetting when moving and being unable to be plugged into the inner cavity of the socket 7, thereby affecting the fixing of the drill body 5. By providing the limiting rod 210, the movement of the threaded disk 205 can be limited to prevent the threaded disk 205 from rotating synchronously with the bidirectional screw 204 when rotating, thereby affecting the fixing of the drill body 5. By providing the clamping block 211, the position of the drill body 5 inserted in the inner cavity of the insertion slot 9 can be limited, so that the slot 209 and the socket 7 are in the same horizontal plane, which facilitates the plug block 208 to fix the drill body 5. By providing the insertion slot 9, the bottom of the drill body 5 can be conveniently sleeved on the fixing tube 201. On the outside, the drill body 5 and the mounting block 1 can be at the same vertical angle when connected, so as to avoid the drill body 5 from being offset when installing the drill body 5, thereby affecting the subsequent hole opening work. By setting the slot 209 and the socket 7, since the two are in the same horizontal plane and are interconnected, the plug block 208 can freely enter the inner cavity of the socket 7, thereby improving the passability of the plug block 208 and enhancing the convenience of fixing the drill body 5 by the plug block 208. By setting the flange 4, the overall equipment and the output end of the electric hammer drill can be easily connected to each other for easy assembly. By setting the protective baffle 6, the drill body 5 can block the waste material splashed during the hole turning when drilling an object, so as to avoid splashing onto the body surface of the operator and causing injury.

[0036] When the utility model is working: when the drill body 5 is worn flat and needs to be replaced, the output of the micro motor 203 is first used, and the bidirectional screw 204 rotates at this time, and the threaded disk 205 moves outward due to the rotation of the bidirectional screw 204, and the movable rod 206 flips inward due to the pulling of the threaded disk 205. At this time, the movable plate 207 moves inward due to the flipping of the movable rod 206, and simultaneously drives the plug block 208 to move inward, so that it moves out of the inner cavity of the socket 7, and then the drill body is pulled upward. 5 can complete the disassembly work. When the drill body 5 needs to be fixed, the reverse output of the micro motor 203 makes the bidirectional screw 204 rotate in the opposite direction synchronously. At this time, the threaded disk 205 moves inward along the thread on the surface of the bidirectional screw 204. As the threaded disk 205 moves, the movable rod 206 flips outward and simultaneously pushes the movable plate 207 to move outward. At this time, the plug block 208 moves with the movable plate 207 and is plugged into the inner cavity of the socket 7 again to complete the fixing work of the drill body 5.

[0037] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A sleeve-type electric hammer drill bit, characterized in that: It comprises a mounting block (1) and a drill body (5), wherein the bottom of the drill body (5) is provided with a clamping groove (8), and the bottom of the drill body (5) is provided with a plurality of insertion holes (7); A fixing mechanism (2) is arranged in the inner cavity of the mounting block (1), the fixing mechanism (2) comprising a fixing tube (201) and a slot (209), the fixing tube (201) being arranged in the inner cavity of the mounting block (1), a mounting slot (202) being provided at the bottom of the inner cavity of the fixing tube (201), a micro motor (203) being fixedly installed in the inner cavity of the mounting slot (202), an output end of the micro motor (203) being fixedly connected to a bidirectional screw rod (204), both upper sides of the surface of the bidirectional screw rod (204) being threadedly connected to threaded disks (205), movable rods (206) being movably connected around the two threaded disks (205), the outer sides of the eight movable rods (206) being multi-connected to movable plates (207), and the outer sides of the four movable plates (207) being fixedly installed with a plurality of plug blocks (208).

2. A sleeve-type electric hammer drill bit according to claim 1, characterized in that: The slots (209) are all opened around the surface of the fixed tube (201), and the plug block (208) penetrates the inner cavity of the slots (209) and is plugged into the inner cavity of the plug hole (7).

3. The sleeve-type electric hammer drill bit according to claim 1, characterized in that: Limiting rods (210) are fixedly installed around the bottom of the inner cavity of the fixed tube (201), and the inner surfaces of the two threaded disks (205) are movably connected to the surfaces of the four limiting rods (210) around their peripheries.

4. The sleeve-type electric hammer drill bit according to claim 1, characterized in that: Clamping blocks (211) are fixedly mounted on all four sides of the outer side of the fixed tube (201), and the four clamping blocks (211) are clamped in the inner cavities of the four clamping slots (8).

5. The sleeve-type electric hammer drill bit according to claim 1, characterized in that: The top of the mounting block (1) is provided with an inserting groove (9), the fixing tube (201) is fixedly mounted on the bottom of the inner cavity of the inserting groove (9), and the bottom of the drill body (5) is inserted into the inner cavity of the inserting groove (9).

6. The sleeve-type electric hammer drill bit according to claim 1, characterized in that: The plug hole (7) and the slot (209) are located at the same horizontal plane, and the slot (209) and the plug hole (7) are connected to each other.

7. The sleeve-type electric hammer drill bit according to claim 1, characterized in that: A connecting shaft (3) is fixedly mounted on the bottom of the mounting block (1), and a flange (4) is fixedly mounted on the bottom of the connecting shaft (3).

8. The sleeve-type electric hammer drill bit according to claim 1, characterized in that: A protective baffle (6) is welded to the surface of the drill body (5), and a rubber protective pad is bonded into the inner cavity of the protective baffle (6).

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