CN216110554U - Rotary drilling bit for spiral drilling machine - Google Patents
Rotary drilling bit for spiral drilling machine Download PDFInfo
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- CN216110554U CN216110554U CN202121921320.2U CN202121921320U CN216110554U CN 216110554 U CN216110554 U CN 216110554U CN 202121921320 U CN202121921320 U CN 202121921320U CN 216110554 U CN216110554 U CN 216110554U
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Abstract
The utility model relates to the technical field of spiral drilling machines, in particular to a rotary drilling bit for an spiral drilling machine. The utility model provides a rotary drilling bit for an auger drilling machine, which comprises: the support rod is cylindrical, the two spiral blades are spirally fixed at the lower end of the outer wall of the support rod, and the diameters of the spiral blades are gradually increased from the lower end to the upper end of the support rod; the sleeve is slidably sleeved on the outer wall of the supporting rod, a locking structure is arranged at the upper end of the sleeve, the sleeve is hollow, the helical blade is arranged in the sleeve, and the sleeve is linked with the supporting rod; wherein sliding the sleeve can increase or decrease the drilling depth of the helical blade. Through setting up sleeve 2, solved among the prior art technical problem that the drilling depth can't be adjusted in a flexible way in order to reach different engineering requirements to the drill bit.
Description
Technical Field
The utility model relates to the technical field of spiral drilling machines, in particular to a rotary drilling bit for an spiral drilling machine.
Background
The rotary drill is a construction process suitable for hole forming operation in building foundation engineering, is widely applied to foundation construction engineering such as municipal construction, highway bridges, high-rise buildings and the like, and is suitable for hole forming operation of dry (short spiral) or wet (rotary bucket) and rock strata (core drill) by matching with different drilling tools.
The drill bit of digging soon among the prior art is mostly the drill bit of fixed aperture, at the in-process of punching, often meet the diameter of punching too little, and the method of enlarging the diameter either changes the bigger drill bit of diameter or just repeatedly punches in same aperture one side, and such operation is wasted time and energy and still leads to the hole groove depth to differ easily, influences the installation in later stage, and because lead to the trompil depth to differ according to the pressure intensity difference moreover, it is very necessary to develop a drill bit soon for the auger drilling machine.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the utility model provides a rotary drilling bit for an auger drilling machine, which solves the technical problem that in the prior art, the rotary drilling bit is complex to operate and causes inconsistent drilling depth.
The technical scheme adopted by the utility model for solving the technical problem is that the rotary drilling bit for the spiral drilling machine comprises: the support rod is cylindrical, the two spiral blades are spirally fixed at the lower end of the outer wall of the support rod, and the diameters of the spiral blades are gradually increased from the lower end to the upper end of the support rod; the sleeve is slidably sleeved on the outer wall of the supporting rod, a locking structure is arranged at the upper end of the sleeve, the sleeve is hollow, the helical blade is arranged in the sleeve, and the sleeve is linked with the supporting rod; wherein sliding the sleeve can increase or decrease the drilling depth of the helical blade.
Furthermore, the sleeve is in a hollow cylindrical shape, an arc cylinder is fixed at the lower end of the sleeve, the arc cylinder is hollow, and the helical blades protrude out of the end wall of the arc cylinder; the inner diameter of the arc cylinder is larger than the outer diameter of the horizontal projection of the helical blade.
Furthermore, a linkage assembly is arranged in the sleeve, one end of the linkage assembly is hinged to the inner wall of the sleeve, and the other end of the linkage assembly abuts against the outer wall of the supporting rod; wherein pushing the linkage assembly can extend or retract the helical blade into the sleeve.
Further, the linkage assembly includes: the fixing plate is fixedly arranged on the inner wall of the sleeve, and the fixing plate is sleeved on the outer wall of the supporting rod in a sliding manner; the positioning block is sleeved on the outer wall of the supporting rod; the two movable plates are respectively hinged to two sides of the fixed plate and are arranged oppositely; two ends of the connecting rod are respectively hinged to the movable plate and the positioning block, and the two connecting rods are respectively arranged on two sides of the supporting rod; wherein pushing the movable plate downward can push the sleeve to move toward the lower end of the support rod to retract the helical blade.
Furthermore, the outer wall of the supporting rod is provided with a limiting block, the cross section of the limiting block protrudes out of the outer wall of the supporting rod in a cross shape, and the limiting block is arranged in the sleeve; a limiting groove matched with the limiting block is formed in the fixing plate; after the limiting block is inserted into the limiting groove, the supporting rod can drive the sleeve to rotate synchronously.
Furthermore, a positioning cylinder is fixed at the upper end of the sleeve, a positioning hole is formed in the side wall of the positioning cylinder, the locking structure penetrates through the positioning hole to be in threaded connection with the positioning cylinder, the end part of the locking structure abuts against the outer wall of the supporting rod, the positioning cylinder is conical, and the upper end of the positioning cylinder is slidably sleeved on the outer wall of the supporting rod; wherein rotating the locking structure can fix the sleeve on the outer wall of the support rod.
Furthermore, the lower extreme of bracing piece is provided with one and attacks the hard piece, it is triangle-shaped to attack the hard piece, just it fixes to attack the hard piece vertical fixation in the lower end wall of bracing piece, it laminates with two respectively to attack the both sides of hard piece the bottom face of helical blade mutually.
The rotary drilling bit for the spiral drilling machine has the advantages that the rotary drilling bit can flexibly change the drilling depth of the drill bit through the sleeve, so that different engineering requirements are met, the rotary drilling bit is simple in structure, convenient to operate and suitable for popularization.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural diagram of a rotary drilling bit for an auger drilling machine according to the present invention;
FIG. 2 is a schematic structural view of the linkage assembly of the present invention;
fig. 3 is a schematic view of the internal structure of the sleeve of the present invention.
In the figure:
1. a support bar; 11. tapping hard blocks; 2. a sleeve; 20. a locking structure; 21. a circular arc cylinder; 22. a linkage assembly; 221. a fixing plate; 222. positioning blocks; 223. a connecting rod; 224. a movable plate; 225. a limiting block; 23. a positioning cylinder; 231. positioning holes; 3. a helical blade.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. On the contrary, the embodiments of the utility model include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1 to 3, the present invention provides a rotary drill bit for an auger machine, comprising: the drilling tool comprises a support rod 1, a sleeve 2 and two helical blades 3, wherein the support rod 1 can be suitable for autorotation and drive the sleeve 2 and the two helical blades 3 to synchronously rotate, and meanwhile, the support rod 1 can move up and down to drill a hole; the sleeve 2 can change the length of the spiral blade 3 protruding out of the support rod 1, so that the diameter and the depth of a drilled hole can be changed; the helical blade 3 is suitable for completing the corresponding drilling process under the driving of the supporting rod 1. With respect to the above components, detailed description is given below.
Support rod
The support rod 1 is cylindrical, the support rod 1 is solid inside so as to ensure the strength of the support rod 1, the support rod 1 is positioned at the center of the rotary drilling bit, the support rod 1 can rotate axially during working and advances downwards along the axial direction, the main effect is to transmit torque, and meanwhile, as hard rocks are usually touched by an object drilled by the rotary drilling bit, the support rod 1 must bear huge internal and external pressure, distortion, bending and vibration, so that the support rod 1 can be used for multiple times without being easily damaged in the working process. In addition, the rotary drilling bit for the auger drilling machine shown in the embodiment is designed in a split mode, and the support rod 1 is also an installation base part of other parts.
Helical blade
The spiral blades 3 are provided with two identical pieces, the two spiral blades 3 are spirally fixed at the lower end of the outer wall of the supporting rod 1, the two spiral blades 3 are axially arranged at intervals along the supporting rod 1, and the pitch between any two spiral blades 3 is kept equal. The diameters of the two spiral blades 3 are gradually increased from the lower end to the upper end of the supporting rod 1, and when the supporting rod 1 rotates and moves downwards for drilling, the spiral blades 3 can move gradually from bottom to top layer by layer to enlarge the aperture of the drilled hole.
In order to enhance the drilling reliability of the rotary drilling bit, the lower end of the support rod 1 is provided with a hard tapping block 11, the hard tapping block 11 is triangular, two sides of the hard tapping block 11 are respectively attached to the bottom end faces of the two helical blades 3, the hard tapping block 11 is vertically fixed on the lower end wall of the support rod 1, and the concrete expression is that the sharp corner of the hard tapping block 11 faces downwards, and the bottom face of the hard tapping block is fixedly connected with the lower end face of the support rod 1. When rotating the bracing piece 1, attack the piece 11 and can take lead the ground of boring in proper order to break through hard rock stratum, when attacking the piece 11, thereby the protection bracing piece 1 with helical blade 3 directly contacts with the ground and is destroyed.
It should be pointed out that, in the working process of the rotary drilling bit for the general spiral drilling machine, the helical blade 3 of the drill bit is usually directly exposed in the air, but because in the actual engineering requirement, deep holes are not always required to be drilled, and the depth and the drilling radius of the drilled hole can be controlled only by the experience of an operator when the drill bit for the general spiral drilling machine drills, the diameter of the drilled hole is often too small, and the diameter expansion is usually divided into two methods of replacing the drill bit with a larger diameter and repeatedly drilling the hole on one side of the same hole diameter, such operation is time-consuming and labor-consuming, and the depth of the hole groove is easily different, the later-stage installation is affected, and the depth of the drilled hole is different due to different pressure degrees. In order to solve the above problem, the rotary drilling bit for the auger drilling machine in the embodiment further includes a sleeve 2.
Sleeve barrel
The structure of the sleeve 2 is specifically described below, and the sleeve 2 specifically includes a locking structure 20, an arc cylinder 21, a linkage assembly 22 and a positioning cylinder 23. The locking structure 20 can keep the sleeve 2 and the support rod 1 relatively fixed, so that the height and the maximum diameter of the spiral blade 3 protruding out of the sleeve 2 are determined according to engineering requirements; the arc cylinder 21 can be abutted against the ground after the drilling of the helical blade 3 reaches the engineering depth, so that the helical blade 3 is prevented from being drilled downwards continuously; the linkage assembly 22 can drive the sleeve 2 to slide up and down along the outer wall of the support rod 1, so that the height of the spiral blade 3 protruding out of the sleeve 2 and the corresponding maximum diameter of the spiral blade 3 are adjusted; the positioning cylinder 23 is adapted to mount the locking structure 20.
The arc tube 21 is fixed the lower extreme of sleeve 2, the inward bending of arc tube 21 forms the arc surface, just the arc tube 21 cavity, the arc tube 21 with sleeve 2 lateral wall thickness is the same. The helical blade 3 protrudes out of the end wall of the arc cylinder 21, and the inner diameter of the arc cylinder 21 is larger than the outer diameter of the horizontal projection of the helical blade 3. When the drilling of helical blade 3 reaches the predetermined depth, arc cylinder 21 can butt ground from preventing helical blade 3 to drilling deeper.
The linkage assembly 22 is arranged inside the sleeve 2, one end of the linkage assembly 22 is hinged to the inner wall of the sleeve 2, and the other end of the linkage assembly 22 abuts against the outer wall of the support rod 1. Pushing the linkage assembly 22 can extend or retract the helical blade 3 into the sleeve 2, thereby achieving the effect of adjusting the drilling depth.
The linkage assembly 22 specifically includes: a fixed plate 221, a positioning block 222, two connecting rods 223 and two movable plates 224. The both ends of fixed plate 221 are fixed sleeve 2 inner wall, just fixed plate 221 slidable cover is established 1 outer wall of bracing piece, fixed plate 221 follows when 1 outer wall of bracing piece slides, can drive sleeve 2 synchronous slip. The positioning block 222 is sleeved on the outer wall of the support rod 1. The two movable plates 224 are hinged to two sides of the fixed plate 221, and the two movable plates 224 are disposed opposite to each other. Two ends of the connecting rod 223 are respectively hinged to the movable plate 224 and the positioning block 222, and the two connecting rods 223 are respectively disposed on two sides of the supporting rod 1. When the movable plate 224 is pushed downwards, the movable plate 224 can push the connecting rod 223 to rotate around the positioning block 222, so that the fixing plate 221 can push the sleeve 2 to move towards the lower end of the supporting rod 1 to contract the helical blade 3; when the movable plate 224 is pushed upwards, the movable plate 224 can pull the connecting rod 223 to rotate around the positioning block 222 in the opposite direction, so that the fixing plate 221 can push the sleeve 2 to move towards the upper end of the supporting rod 1 to extend the helical blade 3. The upper end of sleeve 2 is fixed with a location section of thick bamboo 23, a locating hole 231 has been seted up to a location section of thick bamboo 23 lateral wall, locking structure 20 with locating hole 231 looks adaptation, just locking structure 20 outside has the external screw thread, locking structure 20 passes locating hole 231 with a location section of thick bamboo 23 threaded connection, just locking structure 20 tip with 1 outer wall of bracing piece offsets, a location section of thick bamboo 23 is the toper, just the upper end slidable cover of a location section of thick bamboo 23 is established the outer wall of bracing piece 1 rotates locking structure 20 can with sleeve 2 is fixed 1 outer wall of bracing piece, thereby confirms helical blade 3 protrusion the height of locking structure 20.
In order to facilitate the sleeve 2 to synchronously rotate along with the support rod 1, a limiting block 225 is arranged on the outer wall of the support rod 1, the cross section of the limiting block 225 protrudes out of the outer wall of the support rod 1 in a cross shape, and the limiting block 225 is arranged in the sleeve 2; a limiting groove matched with the limiting block 225 is formed in the fixing plate 221; after the limiting block 225 is inserted into the limiting groove, the supporting rod 1 can drive the sleeve 2 to rotate synchronously.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, a schematic representation of the term does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. A rotary drilling bit for an auger drilling machine is characterized by comprising:
the support rod (1) is cylindrical, the two spiral blades (3) are spirally fixed at the lower end of the outer wall of the support rod (1), and the diameters of the spiral blades (3) are gradually increased from the lower end to the upper end of the support rod (1);
the sleeve (2) is sleeved on the outer wall of the support rod (1) in a sliding manner, a locking structure (20) is arranged at the upper end of the sleeve (2), the sleeve (2) is hollow, the helical blade (3) is arranged in the sleeve (2), and the sleeve (2) is linked with the support rod (1); wherein
Sliding the sleeve (2) can increase or decrease the drilling depth of the helical blade (3).
2. A rotary excavating bit for an auger machine according to claim 1, wherein,
the sleeve (2) is in a hollow cylindrical shape, an arc cylinder (21) is fixed at the lower end of the sleeve (2), the arc cylinder (21) is hollow, and the helical blades (3) protrude out of the end wall of the arc cylinder (21); the inner diameter of the arc cylinder (21) is larger than the outer diameter of the horizontal projection of the helical blade (3).
3. A rotary excavating bit for an auger machine according to claim 2,
a linkage component (22) is arranged in the sleeve (2), one end of the linkage component (22) is hinged to the inner wall of the sleeve (2), and the other end of the linkage component (22) is abutted to the outer wall of the support rod (1); wherein
Pushing the linkage assembly (22) can extend or retract the helical blade (3) into the sleeve (2).
4. A rotary excavating bit for an auger machine according to claim 3, wherein,
the linkage assembly (22) includes: the support device comprises a fixed plate (221), a positioning block (222), two connecting rods (223) and two movable plates (224), wherein two ends of the fixed plate (221) are fixed on the inner wall of the sleeve (2), and the fixed plate (221) is slidably sleeved on the outer wall of the support rod (1);
the positioning block (222) is sleeved on the outer wall of the supporting rod (1);
the two movable plates (224) are respectively hinged to two sides of the fixed plate (221), and the two movable plates (224) are oppositely arranged;
two ends of the connecting rod (223) are respectively hinged to the movable plate (224) and the positioning block (222), and the two connecting rods (223) are respectively arranged on two sides of the supporting rod (1); wherein
Pushing the movable plate (224) downward can push the sleeve (2) to move toward the lower end of the support rod (1) to contract the helical blade (3).
5. A rotary excavating bit for an auger machine according to claim 4, wherein,
a limiting block (225) is arranged on the outer wall of the supporting rod (1), the cross section of the limiting block (225) protrudes out of the outer wall of the supporting rod (1) in a cross shape, and the limiting block (225) is arranged in the sleeve (2);
a limiting groove matched with the limiting block (225) is formed in the fixing plate (221); wherein
After the limiting block (225) is inserted into the limiting groove, the supporting rod (1) can drive the sleeve (2) to rotate synchronously.
6. A rotary excavating bit for an auger machine according to claim 5, wherein,
a positioning barrel (23) is fixed at the upper end of the sleeve (2), a positioning hole (231) is formed in the side wall of the positioning barrel (23), the locking structure (20) penetrates through the positioning hole (231) to be in threaded connection with the positioning barrel (23), the end part of the locking structure (20) is abutted against the outer wall of the support rod (1), the positioning barrel (23) is conical, and the upper end of the positioning barrel (23) is slidably sleeved on the outer wall of the support rod (1); wherein
The sleeve (2) can be fixed on the outer wall of the support rod (1) by rotating the locking structure (20).
7. A rotary excavating bit for an auger machine according to claim 6, wherein,
the lower extreme of bracing piece (1) is provided with one and attacks hard piece (11), it is triangle-shaped to attack hard piece (11), just it fixes to attack hard piece (11) vertical fixation be in bracing piece (1) lower end wall, attack the both sides of hard piece (11) and two respectively the bottom face of helical blade (3) is laminated mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121921320.2U CN216110554U (en) | 2021-08-17 | 2021-08-17 | Rotary drilling bit for spiral drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121921320.2U CN216110554U (en) | 2021-08-17 | 2021-08-17 | Rotary drilling bit for spiral drilling machine |
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| Publication Number | Publication Date |
|---|---|
| CN216110554U true CN216110554U (en) | 2022-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121921320.2U Active CN216110554U (en) | 2021-08-17 | 2021-08-17 | Rotary drilling bit for spiral drilling machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116519422A (en) * | 2023-06-28 | 2023-08-01 | 河北工业大学 | Method for planning 3D printing cutting path of rock mass model variable-opening fracture and forming device |
-
2021
- 2021-08-17 CN CN202121921320.2U patent/CN216110554U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116519422A (en) * | 2023-06-28 | 2023-08-01 | 河北工业大学 | Method for planning 3D printing cutting path of rock mass model variable-opening fracture and forming device |
| CN116519422B (en) * | 2023-06-28 | 2023-09-26 | 河北工业大学 | Method for planning 3D printing cutting path of rock mass model variable-opening fracture and forming device |
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