CN220979386U - Reaming device for construction slope anchor bolt support - Google Patents
Reaming device for construction slope anchor bolt support Download PDFInfo
- Publication number
- CN220979386U CN220979386U CN202322684098.4U CN202322684098U CN220979386U CN 220979386 U CN220979386 U CN 220979386U CN 202322684098 U CN202322684098 U CN 202322684098U CN 220979386 U CN220979386 U CN 220979386U
- Authority
- CN
- China
- Prior art keywords
- reaming
- sleeve
- push rod
- constructing
- slope anchor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010276 construction Methods 0.000 title claims description 7
- 238000005553 drilling Methods 0.000 abstract description 12
- 238000004873 anchoring Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000002689 soil Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to the technical field of slope support and discloses a reaming device for constructing slope anchor bolt support, which comprises a sleeve, a push rod, reaming cutter heads and a locking structure, wherein the reaming cutter heads are installed in the sleeve, each reaming cutter head comprises at least two reaming cutter bodies, the first ends of the reaming cutter bodies are hinged with the sleeve, torsion springs are connected between the reaming cutter bodies and the sleeve, through holes for the reaming cutter bodies to pass through are correspondingly formed in the sleeve, the push rod is inserted into the sleeve from the rear end of the sleeve, and the locking structure is positioned at the rear end of the sleeve and is used for locking the push rod on the sleeve. Through adopting this reaming device to form a conical cavity with drilling bottom, reaming stability is high, guarantees reaming performance, and is convenient for the cutter to retrieve.
Description
Technical Field
The utility model relates to the technical field of slope support, in particular to a reaming device for constructing slope anchor rod support.
Background
At present, the anchor bolt support is a support mode commonly used for side slope support, and has the characteristics of quick and efficient construction, small disturbance on the side slope and remarkable support effect. However, due to the problems of complex geological conditions and low construction standardization level of the slope engineering, the problem of slope anchor rod failure frequently occurs. The anchor quality of the head of the anchor rod determines the supporting effect of the anchor rod to a great extent, but soil around the head of the anchor rod can soften soil at the anchor head part and form holes due to rainfall erosion, bad geologic bodies and the like, so that the anchor head is loosened, the anchor rod anchoring effect is reduced and even fails. The friction force between the anchor rod and the soil body after grouting is small when the approximately cylindrical drill hole is formed, and the anchoring effect of the anchor rod can be reduced sharply once a certain section of soil body around the drill hole is damaged.
Based on the above, in the prior art, after drilling, the bottom of the drilling hole is reamed into a cone shape, so that the risk resistance of the anchor rod is improved, and the anchoring effect is improved; however, most of the prior reaming devices have the problems of poor reaming performance, unstable reaming, difficult tool recovery and the like.
Disclosure of utility model
The purpose of the utility model is that: the reaming device for the side slope anchor rod support can form a conical cavity at the bottom of a drilled hole, is high in reaming stability, ensures reaming performance and is convenient for a cutter to recycle.
In order to achieve the above object, the utility model provides a reaming device for constructing a slope anchor bolt support, comprising a sleeve, a push rod, a reaming cutter head and a locking structure, wherein the reaming cutter head is installed in the sleeve and is close to the front end of the sleeve, the reaming cutter head comprises at least two reaming cutter bodies, the first end of each reaming cutter body is hinged with the sleeve, a torsion spring is connected between the reaming cutter body and the sleeve, when the reaming cutter head is in a natural state, each reaming cutter body is folded, the second end of each reaming cutter body is positioned behind the first end, a through hole for the reaming cutter body to pass through is formed in the sleeve at a position corresponding to each reaming cutter body, the push rod is inserted into the sleeve from the rear end of the sleeve, the push rod can slide relative to the sleeve, so that the front end of the push rod pushes each reaming cutter body to rotate around the sleeve to expand, and the locking structure is positioned at the rear end of the sleeve and used for locking the push rod on the sleeve.
Further, the sleeve is in threaded connection with the push rod.
Further, the front end of the push rod is provided with a conical head, and the outer diameter of the conical head is gradually increased from front to back.
Further, when the reamer heads are in the natural state, a spreading gap is formed between the rear ends of at least two reamer bodies.
Further, the cutter blade surface of the reaming cutter body is serrated.
Further, a limiting ring is arranged in the sleeve, a boss used for being matched with the limiting ring to limit is arranged on the push rod, and the boss is located at the rear of the limiting ring.
Further, the locking structure comprises a lock nut and a bolt, the bolt is inserted into the sleeve and the push rod along the radial direction of the sleeve, and the lock nut is in threaded connection with the bolt.
Further, a fixing ring is arranged on the periphery of the rear end of the sleeve.
Further, a connecting part for connecting with a rotary machine is arranged at the part of the rear end of the push rod, which is separated from the sleeve.
Further, the reaming cutter heads are provided with two reaming cutter bodies, and the rear ends of the two reaming cutter bodies are hinged with the sleeve through a rotating shaft.
Compared with the prior art, the reaming device for constructing the slope anchor rod support has the beneficial effects that:
According to the utility model, the recoverable anchor rod hole reaming device is adopted to form a conical cavity at the bottom of the borehole, so that the reaming stability is high, the reaming performance is ensured, and the tool is convenient to recycle.
Drawings
Fig. 1 is a schematic front view of a natural state of a reaming device for constructing slope anchor supports according to an embodiment of the present utility model.
Fig. 2 is a schematic side view of a natural state of a reaming device for constructing slope anchor supports according to an embodiment of the present utility model.
Fig. 3 is a schematic structural view of a reaming device for constructing a slope anchor support according to an embodiment of the present utility model in an operating state.
In the figure, 1, a sleeve; 2. a push rod; 3. reaming tool bit; 4. a torsion spring; 5. a shaft pin; 6. a spring torsion sleeve; 7. a thread; 8. a locking structure; 9. a fixing ring; 10. a limiting ring; 11. and (5) a via hole.
Detailed Description
The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.
In the description of the present utility model, terms such as "upper", "lower", "left", "right", "front", "rear", "inner", "outer", "transverse", "longitudinal", and the like are used for convenience in describing the present utility model and simplifying the description only, and are not intended to limit the present utility model to the specific orientations or configurations and operations of the indicated devices, elements or components, and thus should not be construed as limiting the present utility model. The specific meaning of these terms in the present utility model will be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present utility model, the terms "provided," "disposed," "connected," and "disposed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or of unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish between different devices, elements, or components (the particular species and configurations may be the same or different), and are not used to indicate or imply the relative importance and number of devices, elements, or components indicated. Unless otherwise indicated, the meaning of "a plurality" is two or more.
As shown in fig. 1 and 2, a reaming device for constructing a slope anchor bolt support according to a preferred embodiment of the present utility model includes a casing 1, a push rod 2, a reaming cutter head 3 and a locking structure 8, wherein the reaming cutter head 3 is installed in the casing 1 and is close to the front end of the casing 1, the reaming cutter head 3 includes at least two reaming cutter bodies, the first ends of the reaming cutter bodies are hinged with the casing 1, a torsion spring 4 is connected between the reaming cutter bodies and the casing 1, when the reaming cutter head 3 is in a natural state, the reaming cutter bodies are folded, the second ends of the reaming cutter bodies are located behind the first ends of the reaming cutter bodies, a through hole 11 for allowing the reaming cutter bodies to pass is provided on the casing 1 corresponding to the positions of the reaming cutter bodies, the push rod 2 is inserted into the casing 1 from the rear end of the casing 1, the push rod 2 can slide relative to the casing 1, so that the front end of the push rod 2 pushes the reaming cutter bodies to rotate around the casing 1 to expand, and the locking structure 8 is located at the rear end of the casing 1 for locking the push rod 2 on the casing 1. The connection between the torsion spring 4 and the reamer head 3 can be preferably a spring torsion sleeve 6, and the connection between the torsion spring 4 and the sleeve 1 can be preferably a shaft pin 5 inserted into the front end of the sleeve 1. The reamer head 3 mounted on the sleeve 1 is hinged into a scissor shape by the torsion spring 4, and the reamer head 3 is expanded by inserting the reamer head 3 through the push rod 2 so as to realize the reaming function.
Preferably, the sleeve 1 is screwed with the push rod 2. The sleeve 1 and the push rod 2 are in screw connection and slowly fed, so that the reaming stability of the reaming bit 3 is enhanced.
Preferably, the front end of the push rod 2 has a tapered head, the outer diameter of which gradually increases from front to rear. The front end of the push rod 2 is provided with a conical head which is convenient to be matched with the reaming bit 3 to push reaming.
Preferably, when the reamer head 3 is in a natural state as shown in fig. 3, there is a distraction gap between the rear ends of at least two reamer bodies. The back end of the reaming bit 3 leaves a spreading gap in a natural state, and a space for the pushing rod 2 to match with the reaming bit 3 is provided.
Preferably, the blade surface of the reamer body is serrated. The saw-tooth-shaped blade surface of the reaming cutter body is beneficial to increasing the surface area of the tapered hole after reaming, so that the contact area during anchoring is conveniently increased, and the anchoring effect is improved.
Preferably, the sleeve 1 is internally provided with a limiting ring 10, the push rod 2 is provided with a boss for being matched with the limiting ring 10 to limit, and the boss is positioned at the rear of the limiting ring 10. The inside spacing ring 10 that is equipped with of sleeve pipe 1 sets up the feed degree of depth of boss restriction push rod 2 in the cooperation of push rod 2 periphery to inject the opening angle of reamer head 3, prevent that the reaming is too big, destroy torsion spring 4's torsional force.
Preferably, the locking structure 8 comprises a locking nut and a bolt, the bolt is inserted into the sleeve 1 and the push rod 2 along the radial direction of the sleeve 1, and the locking nut is screwed on the bolt. The sleeve 1 and the push rod 2 are locked by the locking structure 8, so that the sleeve 1 and the push rod 2 are relatively static in the reaming process.
Preferably, the rear end periphery of the sleeve 1 is provided with a fixing ring 9. The fixing ring 9 is arranged on the periphery of the rear end of the sleeve 1, so that the depth of the sleeve 1 entering a drilled hole can be limited, and the sleeve 1 can be conveniently limited to rotate during reaming.
Preferably, the part of the rear end of the push rod 2 that is free from the casing 1 is provided with a connection for connection with a drilling machine. The rear end of the push rod 2, which is separated from the sleeve 1, is provided with a connecting part for providing a position for connecting the drilling machine with the push rod.
Preferably, the reamer head 3 is provided with two reamer bodies, and the front ends of the two reamer bodies are hinged with the sleeve 1 through a shaft pin 5.
The working process of the utility model is as follows: the drilling work is finished by a drilling machine, and then the reaming device for the construction slope anchor bolt support is used for reaming. Firstly, a sleeve 1 of a reaming device is connected with a push rod 2 through threads 7, a conical head of the push rod 2 and a reaming cutter head 3 keep a gap, so that the reaming cutter head 3 is prevented from opening to prevent the reaming device from entering a borehole, a drilling machine and the push rod 2 are connected, the reaming device is fed into the bottom of the borehole through the drilling machine, at the moment, the sleeve is fixed through a fixing ring 9, the push rod 2 is rotated through the drilling machine to enable the sleeve to be pushed towards the bottom of the borehole along the threads 7, the push rod 2 pushes the reaming cutter head 3 to slowly open to break into the ground of the bottom of the borehole, the drilling machine is stopped when the push rod 2 is pushed to a limiting ring 10 of the sleeve 1, the sleeve 1 and the push rod 2 are fixed through a locking structure 8 to rotate together, the drilling machine is started again, and the reaming cutter head 3 begins reaming along with the rotation of the sleeve 1, so that a conical cavity is formed at the bottom of the borehole.
In summary, the embodiment of the utility model provides a reaming device for constructing a slope anchor bolt support, which forms a conical cavity at the bottom of a drilled hole by adopting a recoverable anchor bolt hole reaming device, has high reaming stability, ensures reaming performance and is convenient for cutter recovery.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.
Claims (10)
1. A reaming device for construction side slope anchor bolt support, its characterized in that: including sleeve pipe, push rod, reamer head and locking structure, the reamer head install in the sleeve pipe, and be close to the sheathed tube front end, the reamer head includes two at least reamer bodies, each reamer body's first end all with the sleeve pipe articulates, just be connected with torsion spring between the reamer body with the sleeve pipe, and when the reamer head is in natural state, each reamer body draws in, reamer body's second end is located the rear of first end, be equipped with on the sleeve pipe corresponding to each reamer body's position and be used for supplying the via hole that reamer body passed, the push rod is followed sheathed tube rear end is inserted in inside the sleeve pipe, the push rod can slide relatively the sleeve pipe, and then makes the front end of push rod promote each reamer body around the sleeve pipe rotates to the expansion, locking structure is located the rear end of sleeve pipe is used for with the push rod locking in on the sleeve pipe.
2. A reaming device for use in constructing a slope anchor support as claimed in claim 1, wherein: the sleeve is in threaded connection with the push rod.
3. A reaming device for use in constructing a slope anchor support as claimed in claim 1, wherein: the front end of the push rod is provided with a conical head, and the outer diameter of the conical head is gradually increased from front to back.
4. A reaming device for use in constructing a slope anchor support as claimed in claim 1, wherein: when the reaming cutter heads are in the natural state, a strutting gap is reserved between the rear ends of at least two reaming cutter bodies.
5. A reaming device for use in constructing a slope anchor support as claimed in claim 1, wherein: the cutter blade surface of the reaming cutter body is serrated.
6. A reaming device for use in constructing a slope anchor support as claimed in claim 1, wherein: the sleeve is internally provided with a limiting ring, the push rod is provided with a boss used for being matched with the limiting ring to limit, and the boss is positioned at the rear of the limiting ring.
7. A reaming device for use in constructing a slope anchor support as claimed in claim 1, wherein: the locking structure comprises a locking nut and a bolt, wherein the bolt is inserted into the sleeve and the push rod along the radial direction of the sleeve, and the locking nut is in threaded connection with the bolt.
8. A reaming device for use in constructing a slope anchor support as claimed in claim 1, wherein: the periphery of the rear end of the sleeve is provided with a fixing ring.
9. A reaming device for use in constructing a slope anchor support as claimed in claim 1, wherein: the rear end of the push rod is provided with a connecting part used for being connected with a rotary machine.
10. A reaming device for use in constructing a slope anchor bolt support according to any one of claims 1 to 9, wherein: the reaming cutter head is provided with two reaming cutter bodies, and the rear ends of the two reaming cutter bodies are hinged with the sleeve through a rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322684098.4U CN220979386U (en) | 2023-10-08 | 2023-10-08 | Reaming device for construction slope anchor bolt support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322684098.4U CN220979386U (en) | 2023-10-08 | 2023-10-08 | Reaming device for construction slope anchor bolt support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220979386U true CN220979386U (en) | 2024-05-17 |
Family
ID=91060399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322684098.4U Active CN220979386U (en) | 2023-10-08 | 2023-10-08 | Reaming device for construction slope anchor bolt support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220979386U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118756682A (en) * | 2024-09-06 | 2024-10-11 | 中铁一局集团有限公司 | Highway soil condition check out test set for highway engineering |
-
2023
- 2023-10-08 CN CN202322684098.4U patent/CN220979386U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118756682A (en) * | 2024-09-06 | 2024-10-11 | 中铁一局集团有限公司 | Highway soil condition check out test set for highway engineering |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN220979386U (en) | Reaming device for construction slope anchor bolt support | |
| US7730974B2 (en) | Self actuating underreamer | |
| US7686103B2 (en) | Drill bit with radially expandable cutter, and method of using same | |
| EP0631646B1 (en) | Well conduit cutting and milling apparatus and method | |
| US4635738A (en) | Drill bit | |
| RU2436927C2 (en) | Drilling reamer lowered on casing pipe or shank, and method of its drilling | |
| US5402856A (en) | Anti-whirl underreamer | |
| US2498192A (en) | Well-drilling apparatus | |
| US6311793B1 (en) | Rock bit nozzle and retainer assembly | |
| WO2014181105A2 (en) | Self-boring shield anchor apparatus and method | |
| CN210033289U (en) | Reaming device for reinforcing soft soil foundation | |
| US4614242A (en) | Bore hole enlarging arrangement and method | |
| CA2387568C (en) | Drill bit with eccentric body | |
| CN112177533A (en) | PDC drill bit for directional drilling | |
| JPH03503792A (en) | Reamer for drilling | |
| CN113605949A (en) | Supporting construction of self-drilling type anchor rod | |
| US2088770A (en) | Drill collar reamer | |
| CN2317305Y (en) | Reducing borehole-enlarging drilling tool | |
| US5921331A (en) | Backreamer | |
| KR102214739B1 (en) | Anchor Support with Drill and Construction Method thereof | |
| CN217300471U (en) | Alloy drill bit for drilling | |
| CN111236834A (en) | Self-balancing torque drilling method and device for coiled tubing | |
| EP0029354A1 (en) | Anchoring of roof bolts | |
| CN209704502U (en) | A kind of auger boring slip casting drilling machine | |
| CN213086758U (en) | Construction equipment for three-section type compaction threaded pile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |