CN220955488U - Drill rod for advanced drilling of tunnel - Google Patents
Drill rod for advanced drilling of tunnel Download PDFInfo
- Publication number
- CN220955488U CN220955488U CN202322787469.1U CN202322787469U CN220955488U CN 220955488 U CN220955488 U CN 220955488U CN 202322787469 U CN202322787469 U CN 202322787469U CN 220955488 U CN220955488 U CN 220955488U
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- rod
- cavity
- drill bit
- drill
- locking
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- 238000005553 drilling Methods 0.000 title claims abstract description 36
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims 1
- 238000011835 investigation Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of advanced drilling of tunnels, in particular to a drill rod for advanced drilling of tunnels, which comprises a drill rod and a drill bit arranged at the lower end of the drill rod, wherein a threaded column is fixedly connected to the middle part of the upper end of the drill bit, threaded grooves matched with the threaded column are formed in the middle part of the lower end of the drill rod, round grooves are symmetrically formed in the two sides of the threaded column at the upper end of the drill bit, a cavity is formed in the lower side of the two round grooves in the drill bit, a through hole is formed between the two round grooves and the cavity, a locking mechanism capable of preventing the threaded column and the threaded groove from loosening is fixedly arranged in the round grooves, and an unlocking mechanism convenient to unlock is fixedly arranged in the cavity. The utility model is convenient for locking the drill rod and the drill bit, can prevent the drill bit from loosening by itself, and improves the stability of the connection between the drill bit and the drill rod.
Description
Technical Field
The utility model relates to the technical field of advanced tunnel drilling, in particular to a drill rod for advanced tunnel drilling.
Background
The pilot drill belongs to construction investigation, and when the foundation pile is excavated to the bearing layer, the foundation pile is subjected to exploration drilling investigation for finding out whether the poor geological effects such as weak interlayer, cavity and the like exist in the range of not less than 5 meters below the bearing layer.
The method is mainly used for checking the condition of foundation piles at the pile bottom by adopting a drilling method before pile forming, and basically comprises one pile and one hole and large pile and multiple holes. The pile is usually dug in place after the pile design drawing is finished and before concrete is poured. The stratum can be selected to be surveyed, and each pile of the karst area is preferably surveyed.
The drill bit of the prior drill rod for advanced drilling of tunnels is generally in threaded connection, and the drill rod is easily loosened during drilling due to the fact that the drill rod rotates at a high speed, so that the drill bit and the drill rod are damaged, and therefore the drill rod for advanced drilling of tunnels is provided.
Disclosure of utility model
The utility model aims to provide a drill rod for advanced drilling of tunnels, which is convenient for locking the drill rod and a drill bit, can prevent the drill bit from loosening by itself, and improves the stability of the connection between the drill bit and the drill rod so as to solve the problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
The utility model provides a drilling rod for tunnel advance drilling, includes the drilling rod and sets up the drill bit at the drilling rod lower extreme, the upper end middle part fixedly connected with screw thread post of drill bit, the screw thread groove with screw thread post matched with is seted up at the lower extreme middle part of drilling rod, the circular slot has been seted up to the bilateral symmetry that the upper end of drill bit is located the screw thread post, the cavity has been seted up to the inside of drill bit in the downside department of two circular slots, two through-hole has been seted up between circular slot and the cavity, circular slot internal fixation is equipped with the locking mechanism that can prevent screw thread post and screw thread groove loosening, the cavity internal fixation is equipped with the release mechanism of being convenient for the unblock.
Preferably, the locking mechanism comprises a locking rod, the locking rod is arranged in a circular groove in a sliding mode, the upper end of the circular groove extends to the outside of the circular groove, a locking groove matched with the locking rod is formed in the lower end of the drill rod, a spring is arranged at the bottom of the circular groove, a pull rope is arranged in the spring, the upper end of the pull rope is fixedly connected with the locking rod, and the lower end of the pull rope penetrates through the through hole and extends into the cavity.
Preferably, the unlocking mechanism comprises a pull rod, two sliding blocks are symmetrically and fixedly connected to the wall of the pull rod, the sliding blocks are in sliding connection with the wall of the cavity, the lower end of the pull rope is fixedly connected with the wall of the pull rod, and a roller is fixedly arranged at one side of the pull rope in the cavity.
Preferably, one end of the pull rod penetrates through the cavity and is fixedly connected with a pull ring, and a placing groove matched with the pull ring is formed in the side wall of the drill bit.
Preferably, the spring is always in a compressed state, and the pull rope is a stainless pull steel wire rope.
Preferably, the upper end of the locking rod is provided with an arc-shaped surface.
Compared with the prior art, the utility model has the beneficial effects that:
This a drilling rod for tunnel advance drilling, when the installation drill bit through being equipped with, screw in the screw thread inslot with the screw thread post of drill bit, when screw thread post screwed in the screw thread inslot completely, two locking poles correspond with the locking inslot position, the spring upwards promotes locking pole card and goes into the locking inslot, when needing to change the drill bit, the staff pulls the pull ring, the pull ring drives the slider on the pull rod and slides, no longer with locking inslot looks joint when the pull rod drives locking pole extrusion spring through the stay cord, can unscrew the drill bit from the drilling rod this moment, be convenient for lock drilling rod and drill bit, can prevent that the drill bit from becoming flexible by oneself, the stability that drill bit and drilling rod are connected has been improved.
Drawings
Fig. 1 is a schematic structural view of a drill rod for advanced drilling of tunnels.
Fig. 2 is an enlarged schematic view of a portion a of fig. 1.
In the figure: 1. a drill bit; 2. a slide block; 3. a pull rod; 4. a drill rod; 5. a threaded column; 6. a cavity; 7. a roller; 8. a pull rope; 9. a spring; 10. a locking lever; 11. and (5) a pull ring.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 2, the present utility model provides a technical solution:
A drilling rod for tunnel advance drilling comprises a drilling rod 4 and a drill bit 1 arranged at the lower end of the drilling rod 4, wherein a threaded column 5 is fixedly connected to the middle part of the upper end of the drill bit 1, and a thread groove matched with the threaded column 5 is formed in the middle part of the lower end of the drilling rod 4.
The upper end of drill bit 1 is located the bilateral symmetry of screw thread post 5 and has seted up the circular slot, cavity 6 has been seted up to the downside department that the inside of drill bit 1 is located two circular slots, the through-hole has been seted up between two circular slots and the cavity 6, the circular slot internal fixation is equipped with the locking mechanism that can prevent screw thread post 5 and screw thread groove loosening, locking mechanism includes locking lever 10, locking lever 10 slides and sets up in the circular slot, the upper end of circular slot extends to the circular slot outside, the locking groove with locking lever 10 matched with is seted up to the lower extreme of drilling rod 4, the tank bottom of circular slot is provided with spring 9, be provided with stay cord 8 in the spring 9, the upper end and the locking lever 10 fixed connection of stay cord 8, the lower extreme of stay cord 8 passes the through-hole and extends to in the cavity 6, spring 9 is compression state all the time, stay cord 8 is nonrust wire rope, the arc face has been seted up to the upper end of locking lever 10 to be convenient for locking lever 10, the arc face is convenient for locking lever 10 card into the locking inslot.
The cavity 6 internal fixation is equipped with the release mechanism of being convenient for the unblock, release mechanism includes pull rod 3, the wall symmetry fixedly connected with two sliders 2 of pull rod 3, the cavity wall sliding connection of slider 2 and cavity 6, the lower extreme of stay cord 8 and the wall fixed connection of pull rod 3, the fixed gyro wheel 7 that is equipped with in one side department that lies in stay cord 8 in the cavity 6, the one end of pull rod 3 runs through outside cavity 6 and fixedly connected with pull ring 11, the standing groove with pull ring 11 matched with is seted up to the lateral wall of drill bit 1, pull ring 11 is convenient for pull rod 3.
When the drill bit 1 is installed, the threaded column 5 of the drill bit 1 is screwed into the threaded groove, when the threaded column 5 is completely screwed into the threaded groove, the two locking rods 10 correspond to the locking groove, the spring 9 pushes the locking rods 10 upwards to be clamped into the locking groove, the locking rods 10 are matched with the locking groove to prevent the threaded column 5 from loosening with the threaded groove, the stability of connection of the drill bit 1 is improved, when the drill bit 1 needs to be replaced, a worker pulls the pull ring 11, the pull ring 11 drives the sliding block 2 on the pull rod 3 to slide, and the pull rod 3 drives the locking rods 10 to press the spring 9 through the pull rope 8 and is not clamped with the locking groove any more, so that the drill bit 1 can be unscrewed from the drill rod 4.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. Drill rod for advanced drilling of tunnels, comprising a drill rod (4) and a drill bit (1) arranged at the lower end of the drill rod (4), and being characterized in that: the utility model discloses a drill bit, including drill bit (1), cavity (6) have been seted up in the downside department that is located two circular grooves in the upper end middle part fixedly connected with screw thread post (5) of drill bit (1), screw thread post (5) matched with screw thread groove has been seted up in the lower extreme middle part of drilling rod (4), the circular groove has been seted up to the bilateral symmetry that the upper end of drill bit (1) is located screw thread post (5), cavity (6) have been seted up in the downside department that is located two circular grooves in the inside of drill bit (1), two through-hole has been seted up between circular groove and cavity (6), circular groove internal fixation is equipped with the locking mechanism that can prevent screw thread post (5) and screw thread groove from becoming flexible, cavity (6) internal fixation is equipped with the release mechanism of being convenient for the unblock.
2. A drill rod for advanced drilling of tunnels according to claim 1, wherein: the locking mechanism comprises a locking rod (10), the locking rod (10) is arranged in a circular groove in a sliding mode, the upper end of the circular groove extends to the outside of the circular groove, the lower end of the drill rod (4) is provided with a locking groove matched with the locking rod (10), the bottom of the circular groove is provided with a spring (9), a pull rope (8) is arranged in the spring (9), the upper end of the pull rope (8) is fixedly connected with the locking rod (10), and the lower end of the pull rope (8) penetrates through the through hole and extends into the cavity (6).
3. A drill rod for advanced drilling of tunnels according to claim 2, wherein: the unlocking mechanism comprises a pull rod (3), two sliding blocks (2) are symmetrically and fixedly connected to the rod wall of the pull rod (3), the sliding blocks (2) are slidably connected with the cavity wall of a cavity (6), the lower end of a pull rope (8) is fixedly connected with the rod wall of the pull rod (3), and a roller (7) is fixedly arranged at one side of the pull rope (8) in the cavity (6).
4. A drill rod for advanced drilling of tunnels according to claim 3, wherein: one end of the pull rod (3) penetrates out of the cavity (6) and is fixedly connected with a pull ring (11), and a placing groove matched with the pull ring (11) is formed in the side wall of the drill bit (1).
5. A drill rod for advanced drilling of tunnels according to claim 2, wherein: the spring (9) is always in a compressed state, and the pull rope (8) is a stainless steel wire rope.
6. A drill rod for advanced drilling of tunnels according to claim 2, wherein: an arc-shaped surface is arranged at the upper end of the locking rod (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322787469.1U CN220955488U (en) | 2023-10-18 | 2023-10-18 | Drill rod for advanced drilling of tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322787469.1U CN220955488U (en) | 2023-10-18 | 2023-10-18 | Drill rod for advanced drilling of tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220955488U true CN220955488U (en) | 2024-05-14 |
Family
ID=91011836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322787469.1U Active CN220955488U (en) | 2023-10-18 | 2023-10-18 | Drill rod for advanced drilling of tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220955488U (en) |
-
2023
- 2023-10-18 CN CN202322787469.1U patent/CN220955488U/en active Active
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