CN219953262U - Drill bit coupling mechanism - Google Patents
Drill bit coupling mechanism Download PDFInfo
- Publication number
- CN219953262U CN219953262U CN202320535889.8U CN202320535889U CN219953262U CN 219953262 U CN219953262 U CN 219953262U CN 202320535889 U CN202320535889 U CN 202320535889U CN 219953262 U CN219953262 U CN 219953262U
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- CN
- China
- Prior art keywords
- drill bit
- sleeve
- connecting sleeve
- blocks
- attachment mechanism
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- 230000007246 mechanism Effects 0.000 title claims abstract description 25
- 230000008878 coupling Effects 0.000 title claims description 3
- 238000010168 coupling process Methods 0.000 title claims description 3
- 238000005859 coupling reaction Methods 0.000 title claims description 3
- 238000003756 stirring Methods 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 5
- 230000013011 mating Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a drill bit connecting mechanism, which belongs to the technical field of excavator accessories and is used for providing a drill bit connecting mechanism capable of controlling butt joint more easily. The utility model discloses a three component that mutually support about the design for the installation of spiral turn no longer needs a plurality of bolts, also can restrict its relative angle and height, and the easier alignment during installation, contact position everywhere stress distribution is even during the dismantlement, and spiral drill bit can put down after separating with the arm and remove connecting piece such as bolt again, and the dismouting operation is simpler, and is less to connection structure's damage, can repeatedly change the use many times.
Description
Technical Field
The utility model relates to the technical field of excavator accessories, in particular to a drill bit connecting mechanism.
Background
In construction engineering, the earth well is required to be drilled to cast a foundation structure, a spiral drill bit is required to be used for completing the operation, the spiral drill bit is sometimes installed on a drilling vehicle and is sometimes arranged on a mechanical arm of an excavator, and as the spiral drill bit is single equipment, the spiral drill bit is only added with one functional configuration of the excavator, so that the use cost of the spiral drill bit is lower, the spiral drill bit is most widely used in many engineering, but the existing drill bit is connected with the output end of a suspended driving mechanism by bolts.
The mode has certain defects, such as difficulty in control and adjustment due to higher height of the joint and heavier drill bit, difficulty in alignment of a plurality of connecting holes at the butt joint, difficulty in fixation, difficulty in orderly loosening of the connecting pieces during disassembly, bending of the connecting pieces after disassembly due to unbalanced stress, and difficulty in reinstallation after replacement, especially for projects requiring multiple screw rotor replacement, and great influence on working efficiency.
Disclosure of Invention
The utility model aims to provide a drill bit connecting mechanism which is easier to control butt joint.
In order to achieve the above object, the present utility model provides a drill bit connecting mechanism: the device comprises a top member, an intermediate member and a bottom member, wherein the bottom of the top member and the top of the bottom member are provided with mutually matched clamping structures, the clamping structures are used for limiting relative rotation between the top member and the bottom member, the intermediate member is sleeved outside the top member and is in running fit with the top member, and the intermediate member is in threaded fit with the bottom member and is used for limiting the bottom member to move up and down relative to the top member so as to ensure the stability of butt joint.
Preferably, the top member comprises a top jogged sleeve, the lower end of the top jogged sleeve is provided with a plurality of top jogged blocks which are equidistantly distributed, and a top jogged groove is formed between the plurality of top jogged blocks; the bottom member comprises a bottom connecting sleeve, a plurality of bottom engaging blocks are equidistantly distributed on the inner wall of the bottom connecting sleeve, a plurality of bottom engaging grooves are formed between the bottom engaging blocks, the top engaging blocks are suitable for sinking into the bottom engaging grooves, and the bottom engaging blocks are suitable for sinking into the top engaging grooves to form the clamping structure and bear torsional stress.
Preferably, the centers of the bottom engaging blocks are fixedly connected with a central upright post, and the bottom engaging blocks are suitable for being in plug-in fit with the top engaging sleeve, so that the bending resistance of the central part of the joint is improved.
Preferably, the outer side surface of the top jogged sleeve is provided with a coaxial limiting ring, the middle member comprises a movable connecting sleeve, the inner wall of the movable connecting sleeve is provided with a limiting groove, and the limiting groove is suitable for being matched with the limiting ring to form a revolute pair, so that the freedom degree of the middle member is limited.
As a preference, the inner wall of the movable connecting sleeve is also provided with an internal thread positioned below the limiting groove, the outer surface of the bottom connecting sleeve is provided with an external thread, and the movable connecting sleeve is suitable for being matched with the internal thread, and stable butt joint can be realized without using an additional connecting piece at the butt joint position.
Preferably, the outer side surface of the movable connecting sleeve is provided with a stirring ring, a plurality of equally-distributed inserting rod grooves are formed in the position close to the edge of the stirring ring, and the length direction of each inserting rod groove is perpendicular to the axis direction of the movable connecting sleeve so as to move the maximum moment and reduce the force required during rotation.
Preferably, the top member further comprises a top connecting disc, the top connecting disc is fixedly connected with the top end of the top embedded sleeve, and a plurality of top counter bores which are distributed at equal intervals are formed in the top connecting disc and are used for enabling bolts to penetrate through the top connecting disc and fixedly connected with the tail end of the mechanical arm of the excavator.
As one preferable mode, the lower end of the bottom connecting sleeve is fixedly connected with a bottom connecting disc, a plurality of bottom counter bores which are distributed at equal intervals are formed in the bottom connecting disc, and a positioning ring is arranged on the lower end face of the bottom connecting disc and plays a role in positioning when being connected with a spiral drill bit.
Compared with the prior art, the utility model has the beneficial effects that:
(1) Through designing three components which are matched with each other up, down, the installation of the screw rotor does not need a plurality of bolts, the relative angle and the height of the screw rotor can be limited, the screw rotor is easier to align during installation, stress at each contact part is uniformly distributed during disassembly, the screw drill can be placed down after being separated from the mechanical arm, and then the connecting pieces such as bolts and the like can be removed, so that the disassembly and assembly operation is simpler, the damage to the connecting structure is smaller, and the screw rotor can be repeatedly replaced and used;
(2) Through block structure and the cooperation of screwing the structure, compare in adopting a plurality of connecting pieces, the structural stability of butt joint department is better, and the shear stress that the agreeing with the piece received can be less when spiral drill bit rotated, can bear bigger rotation moment of torsion.
Drawings
FIG. 1 is a perspective view of the overall structure of the drill bit connecting mechanism;
FIG. 2 is a perspective cross-sectional view of the overall structure of the bit connection mechanism;
FIG. 3 is a schematic perspective view of the bottom member of the drill bit attachment mechanism;
FIG. 4 is a perspective cross-sectional view of the base member of the drill bit attachment mechanism;
FIG. 5 is a schematic view of the intermediate member and top member of the bit connecting mechanism;
FIG. 6 is a schematic perspective view of the top member of the drill bit attachment mechanism;
FIG. 7 is a schematic perspective view of the intermediate member of the drill bit connection mechanism;
fig. 8 is a perspective structural sectional view of an intermediate member of the bit connecting mechanism.
In the figure: 1. a top member; 101. a top land; 102. a top counterbore; 103. a top fitting sleeve; 104. a limiting ring; 105. a top mating block; 106. a top mating groove; 2. an intermediate member; 201. a movable connecting sleeve; 202. a dial ring; 203. an internal thread; 204. a limit groove; 205. a rod inserting groove; 3. a base member; 301. a bottom connecting disc; 302. a bottom counter bore; 303. a bottom connecting sleeve; 304. an external thread; 305. a central upright; 306. a bottom mating block; 307. a bottom mating groove; 308. and a positioning ring.
Detailed Description
The present utility model will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.
In the description of the present utility model, it should be noted that, for the azimuth words such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present utility model and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present utility model that the device or element referred to must have a specific azimuth configuration and operation.
It should be noted that the terms "first," "second," and the like in the description and in the claims are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
The terms "comprises" and "comprising," along with any variations thereof, in the description and claims, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The drill bit connecting mechanism as shown in fig. 1-8 comprises a top member 1, an intermediate member 2 and a bottom member 3 which are mutually matched, wherein the bottom of the top member 1 and the top of the bottom member 3 are provided with mutually matched clamping structures, in particular: the top component 1 comprises a top jogged sleeve 103, the lower end of the top jogged sleeve 103 is provided with a plurality of top jogged blocks 105 which are distributed at equal intervals, and a top jogged groove 106 is formed among the plurality of top jogged blocks 105; the bottom member 3 includes a bottom connecting sleeve 303, a plurality of bottom engaging blocks 306 are equidistantly distributed on the inner wall of the bottom connecting sleeve 303, a bottom engaging groove 307 is formed between the plurality of bottom engaging blocks 306, in this embodiment, the number of the engaging blocks and the engaging grooves is almost equal to the fan-shaped spreading angle width, the top engaging block 105 is suitable for sinking into the bottom engaging groove 307, the bottom engaging blocks 306 are suitable for sinking into the top engaging groove 106 to form an engaging structure, and the engaging gap is very small after the engaging, so that the engaging structure can well limit the relative rotation between the top member 1 and the bottom member 3, the center of the plurality of bottom engaging blocks 306 is fixedly connected with a central upright post 305, and is suitable for being in plug-in fit with the top engaging sleeve 103, so that the bending stress between the engaging blocks can be dispersed, and the connection stability of the central part at the joint is better.
The middle member 2 is sleeved outside the top member 1 and is in running fit with the top member 1, the outer side surface of the top embedded sleeve 103 is provided with a coaxial limiting ring 104 when the structure is specifically realized, the middle member 2 comprises a movable connecting sleeve 201, and a limiting groove 204 is formed in the inner wall of the movable connecting sleeve 201, so that the limiting groove 204 can be matched with the limiting ring 104 to form a revolute pair, and relative rotation is realized.
The middle member 2 is in threaded fit with the bottom member 3, the inner wall of the movable connecting sleeve 201 is further provided with an inner thread 203 positioned below the limiting groove 204, the outer surface of the bottom connecting sleeve 303 is provided with an outer thread 304 which is suitable for being matched with the inner thread 203, when the inner thread and the outer thread are matched and screwed, the bottom member 3 can be well limited to move up and down relative to the top member 1, the outer side surface of the movable connecting sleeve 201 is provided with a poking ring 202, in the embodiment, the outer side surface of the poking ring 202 is in a corrugated crown shape, the poking ring 202 is provided with a plurality of equally-spaced inserted rod grooves 205 at the position close to the edge, namely the outermost edge of the crown, for inserting a crow bar to more easily rotate the middle member 2 to realize threaded fit, and the length direction of the inserted rod grooves 205 is perpendicular to the axis direction of the movable connecting sleeve 201 so as to obtain larger moment, and the middle member 2 and the bottom member 3 are more easily screwed.
The top component 1 further comprises a top connecting disc 101, the top connecting disc 101 is fixedly connected with the top end of the top embedding sleeve 103, a plurality of top counter bores 102 which are distributed at equal intervals are formed in the top connecting disc 101, connecting pieces such as bolts penetrate through the tail end of the mechanical arm of the excavator, the bottom connecting sleeve 303 is fixedly connected with a bottom connecting disc 301, a plurality of bottom counter bores 302 which are distributed at equal intervals are formed in the bottom connecting disc 301, the connecting pieces are fixedly connected with the main body of the spiral drill bit, a positioning ring 308 is arranged on the lower end face of the bottom connecting disc 301, a pre-positioning function is achieved when the spiral drill bit is installed, and stress at the butt joint position of the spiral drill bit and the bottom connecting disc 301 can be dispersed after the spiral drill bit is installed.
Working principle: when the screw drill is used, firstly, the top component 1 is fixedly connected with the movable end of the mechanical arm of the excavator through the top connecting disc 101, then the engaging structure at the lower end of the top component 1 is aligned with the engaging structure at the upper end of the bottom component 3 until the internal thread 203 of the movable connecting sleeve 201 can be engaged with the external thread 304 of the bottom connecting sleeve 303, then the middle component 2 can be rotated by using a crow bar, the matched threads are continuously screwed in, the crossing depth between the top engaging block 105 and the bottom engaging block 306 is continuously increased in the screwing process until the middle component 2 and the bottom component 3 are completely screwed in, the engaging block is inserted to the bottom, finally, the top of the screw drill is fixedly connected with the bottom connecting disc 301 of the bottom component 3, the installation and the operation can be completed, when the screw drill is required to be disassembled, the screw drill is only required to reversely rotate the middle component 2, the inserted engaging block can be slowly separated until the screw drill is out of the constraint of the screw drill, the screw drill can be detached from the mechanical arm of the excavator, and the screw drill is further detached from the screw drill, and the screw drill is simpler and safer.
The foregoing has outlined the basic principles, features, and advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (8)
1. A drill bit coupling mechanism, characterized in that: the novel structure comprises a top member (1), an intermediate member (2) and a bottom member (3), wherein the bottom of the top member (1) and the top of the bottom member (3) are provided with mutually matched clamping structures, the clamping structures are used for limiting relative rotation between the top member (1) and the bottom member (3), the intermediate member (2) is sleeved outside the top member (1) and is in rotary fit with the top member (1), and the intermediate member (2) is in threaded fit with the bottom member (3) and is used for limiting up-and-down movement of the bottom member (3) relative to the top member (1).
2. The bit attachment mechanism of claim 1, wherein: the top component (1) comprises a top jogged sleeve (103), wherein the lower end of the top jogged sleeve (103) is provided with a plurality of top jogged blocks (105) which are distributed at equal intervals, and a top jogged groove (106) is formed among the plurality of top jogged blocks (105); the bottom component (3) comprises a bottom connecting sleeve (303), a plurality of bottom engaging blocks (306) are equidistantly distributed on the inner wall of the bottom connecting sleeve (303), a plurality of bottom engaging grooves (307) are formed between the bottom engaging blocks (306), the top engaging blocks (105) are suitable for sinking into the bottom engaging grooves (307), and the bottom engaging blocks (306) are suitable for sinking into the top engaging grooves (106) to form the clamping structure.
3. The bit attachment mechanism of claim 2, wherein: the centers of the bottom fitting blocks (306) are fixedly connected with a central upright post (305) which is suitable for being in plug-in fit with the top fitting sleeve (103).
4. A drill bit attachment mechanism as claimed in claim 3, wherein: the outer side surface of the top embedded sleeve (103) is provided with a coaxial limiting ring (104), the middle member (2) comprises a movable connecting sleeve (201), and a limiting groove (204) is formed in the inner wall of the movable connecting sleeve (201) and is suitable for being matched with the limiting ring (104) to form a revolute pair.
5. The drill bit attachment mechanism of claim 4, wherein: the inner wall of the movable connecting sleeve (201) is also provided with an internal thread (203) positioned below the limiting groove (204), and the outer surface of the bottom connecting sleeve (303) is provided with an external thread (304) which is suitable for being matched with the internal thread (203).
6. The drill bit attachment mechanism of claim 5, wherein: the outer side surface of the movable connecting sleeve (201) is provided with a stirring ring (202), a plurality of equally-distributed inserting rod grooves (205) are formed in the position, close to the edge, of the stirring ring (202), and the length direction of each inserting rod groove (205) is perpendicular to the axis direction of the movable connecting sleeve (201).
7. The drill bit attachment mechanism of any one of claims 2-6, wherein: the top component (1) further comprises a top connecting disc (101), the top connecting disc (101) is fixedly connected with the top end of the top embedded sleeve (103), and a plurality of top counter bores (102) which are distributed at equal intervals are formed in the top connecting disc (101).
8. The bit attachment mechanism of claim 7, wherein: the bottom connecting sleeve is characterized in that the lower end of the bottom connecting sleeve (303) is fixedly connected with a bottom connecting disc (301), a plurality of bottom counter bores (302) which are distributed at equal intervals are formed in the bottom connecting disc (301), and a positioning ring (308) is arranged on the lower end face of the bottom connecting disc (301).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320535889.8U CN219953262U (en) | 2023-03-15 | 2023-03-15 | Drill bit coupling mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320535889.8U CN219953262U (en) | 2023-03-15 | 2023-03-15 | Drill bit coupling mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219953262U true CN219953262U (en) | 2023-11-03 |
Family
ID=88539603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320535889.8U Active CN219953262U (en) | 2023-03-15 | 2023-03-15 | Drill bit coupling mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219953262U (en) |
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2023
- 2023-03-15 CN CN202320535889.8U patent/CN219953262U/en active Active
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