CN212154813U - Auxiliary drilling device of shear-resistant anchor pipe - Google Patents
Auxiliary drilling device of shear-resistant anchor pipe Download PDFInfo
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- CN212154813U CN212154813U CN202020738355.1U CN202020738355U CN212154813U CN 212154813 U CN212154813 U CN 212154813U CN 202020738355 U CN202020738355 U CN 202020738355U CN 212154813 U CN212154813 U CN 212154813U
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- slotted steel
- hollow drill
- pipe
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- 238000005553 drilling Methods 0.000 title claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 114
- 239000010959 steel Substances 0.000 claims abstract description 114
- 239000011435 rock Substances 0.000 abstract description 17
- 238000009434 installation Methods 0.000 abstract description 7
- 238000010008 shearing Methods 0.000 abstract description 5
- 230000006872 improvement Effects 0.000 description 9
- 238000010276 construction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000006378 damage Effects 0.000 description 5
- 125000003003 spiro group Chemical group 0.000 description 5
- 238000004873 anchoring Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
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Abstract
The utility model provides an auxiliary drilling device of an anti-shearing anchor pipe, which is used for roadway support and comprises a slotted steel pipe, a hollow drill bit and an adapter, wherein the slotted steel pipe is provided with a pipe seam which is longitudinally through long along the pipe wall; the hollow drill bit is connected and arranged at the head end of the slotted steel pipe; the adapter is connected and installed at the tail end of the slotted steel pipe, and the adapter is used for being connected with a jumbolter. The utility model discloses can improve the installation effectiveness of the anchor pipe that shears, protect the country rock, and need not take out after the installation, directly as permanent supporting component.
Description
Technical Field
The utility model relates to a structural support technical field mainly relates to the tunnel is strutted, specifically is an auxiliary drilling device of anchor pipe that shears.
Background
In the existing roadway supporting mode, the supporting by using anchor rods and anchor cables is common, but the anchor rods have inconvenience due to too high rigidity, for example, the installation length is greatly limited by the roadway space, and the applied pretightening force is low; the anchor cable can be tensioned to obtain strong pretightening force, the anchor cable is good in flexibility and convenient to install, but the rigidity is lower than that of the anchor rod, particularly the shearing rigidity, and the application requirement of actual engineering is difficult to meet.
In view of the above deficiencies, an ACC shear Cable and C-Shaped tube structure has been invented. The shear-resistant anchor pipe cable is a novel coal mine roadway supporting technology, and effectively resists shearing damage of roadway surrounding rocks to an anchor cable by installing a slotted steel pipe between the anchor cable and a drill hole. For example, a prior invention of the inventor, CN103967509B (anchor pipe cable supporting structure capable of bearing transverse shear force), specifically discloses that after a hole is drilled in a surrounding rock, a part of the hole close to the outer end is reamed, a slotted steel pipe is installed at the reamed part, and a resin end part is installed inside the hole and inside the slotted steel pipe to anchor an anchor cable; the free end of the anchor cable is protected by the slotted steel pipe, and the shearing rigidity of the anchor cable is enhanced. Shear anchor cables have found good application in construction sites, but at the same time, there are some problems, such as: the steel pipe that cracks is because rigidity is too big, and the diameter is great than stock, anchor rope, often can take place the card pipe phenomenon when pushing away toward drilling the inside during installation, for the steel pipe can install preset position, needs reaming many times, and efficiency is lower, and has to produce destruction many times to the country rock, probably can lead to drill way country rock to slump.
Disclosure of Invention
In view of prior art's not enough, the utility model aims to provide an anchor pipe's that shears supplementary device of creeping into improves the installation effectiveness of anchor pipe, protects the country rock, and need not take out after the installation, directly regards as permanent supporting member, will assist to creep into and steel pipe unites two into one that shears, has both protected the country rock to avoid excessive destruction, has improved the efficiency of construction again greatly.
The technical scheme of the utility model as follows:
an auxiliary drilling device of an anti-shearing anchor pipe is used for a roadway structure and comprises a slotted steel pipe, a hollow drill bit and an adapter, wherein,
the slotted steel pipe is provided with a longitudinal through-long pipe slot along the pipe wall;
the hollow drill bit is connected and arranged at the head end of the slotted steel pipe;
the adapter is connected and installed at the tail end of the slotted steel pipe, and the adapter is used for being connected with a jumbolter.
As an improvement, the two ends of the slotted steel pipe are respectively provided with a threaded connection section, the threaded connection section at the head end is in threaded connection with the hollow drill bit, and the threaded connection section at the tail end is in threaded connection with the adapter.
As an improvement, the threaded connection section of the head end is a reducing section, the reducing section is carved with external threads, the hollow drill bit is carved with internal threads, the internal threads of the hollow drill bit are in threaded connection with the external threads of the reducing section to realize that the hollow drill bit is fixed on the slotted steel pipe, and the external diameter of the hollow drill bit is the same as that of the slotted steel pipe.
As an improvement, the threaded connection section of the head end is an internal thread engraved on the inner wall of the slotted steel pipe, the hollow drill bit is engraved with an external thread, the external thread of the hollow drill bit is in threaded connection with the internal thread of the head end of the slotted steel pipe to realize that the hollow drill bit is fixed on the slotted steel pipe, and the outer diameter of the hollow drill bit is the same as that of the slotted steel pipe.
As an improvement, the threaded connection section of tail end is the reducing section, and the external screw thread has been carved to the reducing section, the internal thread has been carved to adapter one end, and the external screw thread spiro union of the internal thread of adapter and reducing section realizes that the adapter is fixed in the steel pipe that cracks, and the adapter is used for connecting the roofbolter.
As an improvement, the threaded connection section of tail end is for carving in the internal thread of slotting the steel pipe inner wall, the external screw thread is carved with to adapter one end, and the external screw thread of adapter and the internal thread spiro union of slotting the steel pipe tail end realize that the adapter is fixed in the steel pipe that cracks, and the adapter is used for connecting the roofbolter.
As an improvement, the threaded connection section of tail end is for carving in the external screw thread that cracks the steel pipe outer wall, the internal thread is carved to adapter one end, and the external screw thread spiro union of the internal thread of adapter and the steel pipe tail end of cracking realizes that the adapter is fixed in the steel pipe that cracks, and the adapter is used for connecting the roofbolter.
As an improvement, the outer diameter of the slotted steel pipe is 28mm, the inner diameter of the slotted steel pipe is 24mm, the width of the pipe slot is 4mm, and the outer diameter of the hollow drill bit is 28 mm.
As an improvement, the length of the slotted steel pipe is 1.5-2.5 m.
As an improvement, the slotted steel pipe is 2m long.
The utility model discloses beneficial effect for prior art is: the utility model provides a pair of supplementary device that creeps into of anchor pipe that shears, installation core bit and adapter on the steel pipe of slotting, avoided the tradition to meet the steel pipe and adopted many times reaming to destroy many times that the country rock produced when being difficult to impel, and the steel pipe that cracks is stayed directly to use as the permanent steel pipe that shears in drilling after drilling, with supplementary creep into and steel pipe unite two into one that shears, both protected the country rock and avoided excessive destruction, and the efficiency of construction has been improved greatly again, compromise supporting construction's shear resistance simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a schematic view illustrating an assembled state of an auxiliary drilling apparatus according to a first embodiment of the present invention;
fig. 2 is a schematic structural view of a slotted steel pipe according to a first embodiment of the present invention;
FIG. 3 is a schematic structural view of a hollow drill according to a first embodiment of the present invention;
fig. 4 is a schematic structural view of an adapter according to a first embodiment of the present invention;
fig. 5 is a schematic view illustrating an assembled state of an auxiliary drilling apparatus according to a second embodiment of the present invention;
fig. 6 is a schematic structural view of a slotted steel pipe according to a second embodiment of the present invention;
FIG. 7 is a schematic structural view of a hollow drill according to a second embodiment of the present invention;
fig. 8 is a schematic structural view of an adapter according to a second embodiment of the present invention;
fig. 9 is a schematic view illustrating an assembled state of an auxiliary drilling apparatus according to a third embodiment of the present invention;
fig. 10 is a schematic structural view of a slotted steel pipe according to a third embodiment of the present invention;
fig. 11 is a schematic structural view of an adapter according to a third embodiment of the present invention;
fig. 12 is a schematic view illustrating an assembled state of an auxiliary drilling apparatus according to a fourth embodiment of the present invention;
fig. 13 is a schematic structural view of a slotted steel pipe according to a fourth embodiment of the present invention;
fig. 14 is a schematic view illustrating an assembled state of an auxiliary drilling apparatus according to a fifth embodiment of the present invention;
fig. 15 is a schematic structural view of a slotted steel pipe according to a fifth embodiment of the present invention;
fig. 16 is a schematic view illustrating an assembled state of an auxiliary drilling apparatus according to a sixth embodiment of the present invention;
fig. 17 is a schematic structural view of a slotted steel pipe according to a sixth embodiment of the present invention;
fig. 18 is a schematic view of a shear anchor pipe cable supporting structure according to an embodiment of the present invention;
fig. 19 is a schematic view of the structure of a prior art slotted steel pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are described in further detail below with reference to the embodiments and the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
It is to be understood that the terms "comprises/comprising," "consisting of … …," or any other variation, are intended to cover a non-exclusive inclusion, such that a product, device, process, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product, device, process, or method if desired. Without further limitation, an element defined by the phrases "comprising/including … …," "consisting of … …," or "comprising" does not exclude the presence of other like elements in a product, device, process, or method that comprises the element.
It will be further understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship illustrated in the drawings for convenience in describing the invention and to simplify the description, and do not indicate or imply that the device, component, or structure so referred to must have a particular orientation, be constructed in a particular orientation, or be operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The first embodiment:
referring to fig. 1 to 4, an embodiment of the present invention firstly provides an auxiliary drilling device for a shear-resistant anchor pipe, which is used for roadway support and can assist in drilling during construction of a shear-resistant anchor pipe cable support structure.
The steel pipe comprises a slotted steel pipe 1, a hollow drill bit 2 and an adapter 3, wherein the slotted steel pipe 1 is provided with a longitudinal through-long pipe slot 101 along the pipe wall; the hollow drill bit 2 is connected and installed at the head end of the slotted steel pipe 1, namely towards the end in the drill hole, and the adapter 3 is connected and installed at the tail end of the slotted steel pipe 1, namely towards the end outside the drill hole, and the adapter is used for connecting a jumbolter (not shown in the figure).
Two ends of the slotted steel pipe 1 are respectively provided with a threaded connection section, the threaded connection section 102 at the head end is in threaded connection with the hollow drill bit 2, and the threaded connection section 103 at the tail end is in threaded connection with the adapter 3. The steel pipe, the hollow drill bit and the adapter can be quickly connected and disassembled conveniently by means of the threaded connection section.
In this embodiment, threaded connection section 102 of head end and the threaded connection section 103 of tail end are the reducing section, and the external screw thread has been carved with to the reducing section, and hollow bit 2 and adapter 3 correspond to the sculpture have the internal thread, and hollow bit 2 and adapter 3's internal thread and the external screw thread spiro union of reducing section realize that hollow bit 2 and adapter 3 can dismantle and be fixed in the steel pipe that cracks.
The utility model discloses further with the external diameter design of core bit 2 the same with the external diameter of steel pipe 1 that cracks, see that figure 1 is shown, so be connected the back at core bit and steel pipe, core bit's surface flushes with the surface of steel pipe, and core bit can not influence steel pipe outer wall and country rock full contact, can make the pipe seam give way to press the effect by full play when country rock and steel pipe contact.
The utility model discloses a steel pipe external diameter of cracking designs for 28mm, internal diameter 24mm, and the pipe seam is wide 4mm, and hollow bit external diameter 28mm keeps unanimous with the steel pipe external diameter of cracking. The length of the slotted steel pipe is 1.5-2.5m, preferably 2m according to the field construction condition.
Second embodiment:
referring to fig. 5 to 8, the difference between the present embodiment and the first embodiment is that the threaded connection section 102 at the head end and the threaded connection section 103 at the tail end are internal threads engraved on the inner wall of the slotted steel pipe, the hollow drill 2 and the adapter 3 are engraved with external threads, the external threads of the hollow drill 2 and the adapter 3 are screwed with the internal threads of the slotted steel pipe to fix the hollow drill 2 and the adapter 3 to the slotted steel pipe, and the outer diameter of the hollow drill is the same as the outer diameter of the slotted steel pipe.
The third embodiment:
referring to fig. 9 to 11, the difference between the present embodiment and the first embodiment is that the threaded connection section 103 at the tail end is an external thread carved on the outer wall of the slotted steel pipe, an internal thread is carved on one end of the adapter 3, the internal thread of the adapter is screwed with the external thread at the tail end of the slotted steel pipe to fix the adapter to the slotted steel pipe, and the adapter is used for connecting a jumbolter.
Fourth embodiment:
referring to fig. 12 to 13, the difference between the present embodiment and the first embodiment is that the threaded connection section 102 at the head end is an internal thread engraved on the inner wall of the slotted steel pipe, the hollow drill 2 is engraved with an external thread, the external thread of the hollow drill 2 is screwed with the internal thread at the head end of the slotted steel pipe to fix the hollow drill to the slotted steel pipe, and the external diameter of the hollow drill is the same as the external diameter of the slotted steel pipe.
The threaded connection section 103 of tail end is for carving in the external screw thread that cracks the steel pipe outer wall, and 3 one ends of adapter are carved with the internal thread, and the external screw thread spiro union of the internal thread of adapter and the steel pipe tail end that cracks realizes that the adapter is fixed in the steel pipe that cracks, and the adapter is used for connecting the roofbolter.
Fifth embodiment:
referring to fig. 14 to 15, the difference between the present embodiment and the first embodiment is that the threaded connection section 103 at the tail end is an internal thread carved on the inner wall of the slotted steel pipe, the adapter 3 is carved with an external thread, and the external thread of the adapter 3 is screwed with the internal thread at the tail end of the slotted steel pipe to fix the adapter to the slotted steel pipe.
Sixth embodiment:
referring to fig. 16 to 17, the difference between the present embodiment and the first embodiment is that the threaded connection section 102 at the head end is an internal thread engraved on the inner wall of the slotted steel pipe, the hollow drill 2 is engraved with an external thread, and the external thread of the hollow drill 2 is screwed with the internal thread at the head end of the slotted steel pipe to fix the hollow drill to the slotted steel pipe.
Referring to fig. 18, the utility model discloses an auxiliary drilling device application method is as follows:
firstly, a roof bolter is used for constructing and drilling holes in surrounding rocks of a roadway, wherein the surrounding rocks comprise top plate surrounding rocks and side surrounding rocks;
then installing an anchoring agent 5 in the drilled hole;
then installing a common shear anchor pipe 8 in the borehole, and pulling out the shear anchor pipe 8 which cannot be installed in place due to pipe blockage of the borehole wall from the borehole as shown in fig. 19;
then a hollow drill bit 2 is arranged at the head end of the slotted steel pipe 1, an adapter 3 is arranged at the tail end of the slotted steel pipe, and the slotted steel pipe is drilled into the drill hole to a preset depth by using an anchor rod drilling machine to connect the adapter;
after the slotted steel pipe is installed, the slotted steel pipe and the hollow drill bit are left in the hole, the adapter is removed, then an anchor rope 4 penetrates through the slotted steel pipe, the anchor rope penetrates through the hollow drill bit to be contacted with an anchoring agent 5, the anchor rope is stirred while being pushed until the bottom of the hole, and finally the anchor rope and the anchoring agent act together to form an anchoring body;
finally, a supporting plate 6 is installed outside the drilled hole, and the anchor cable is anchored through an anchor 7.
The utility model discloses an action principle does:
when the tunnel uses ACC anchor pipe cable support that shears, if meet the ordinary anchor pipe 8 construction that shears of conventionality and be difficult to advance and adopt when the design depth the utility model discloses, hollow drill bit 2 and adapter 3 are installed to steel pipe 1 that cracks, adapter 3 connects the roofbolter, with the help of the rotatory drilling of roofbolter drive hollow drill bit 2, can easily advance steel pipe 1 that cracks to the design depth in the drilling, avoided the tradition to meet and adopt a lot of reaming to destroy of country rock production when the steel pipe is difficult to advance, only need lift the adapter off this moment, steel pipe and hollow drill bit no longer take out, it directly uses as permanent steel pipe that shears to stay in the drilling, it unites two into one with the steel pipe that shears to assist to creep into, both protected the country rock and avoided excessive destruction, the efficiency.
Thus, it should be understood by those skilled in the art that while exemplary embodiments of the present invention have been illustrated and described in detail herein, many other variations and modifications can be made in accordance with the principles of the present invention without departing from the spirit and scope of the invention, which is to be determined directly from the disclosure of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. The utility model provides an auxiliary drilling device of anchor pipe shears for roadway support, its characterized in that: comprises a slotted steel pipe, a hollow drill bit and an adapter, wherein,
the slotted steel pipe is provided with a longitudinal through-long pipe slot along the pipe wall;
the hollow drill bit is connected and arranged at the head end of the slotted steel pipe;
the adapter is connected and installed at the tail end of the slotted steel pipe, and the adapter is used for being connected with a jumbolter.
2. The auxiliary drilling device as claimed in claim 1, wherein a threaded connection section is provided at each end of the slotted steel tube, the threaded connection section at the head end is screwed with the hollow drill, and the threaded connection section at the tail end is screwed with the adapter.
3. The auxiliary drilling device according to claim 2, wherein the threaded connection section of the head end is a reducing section, the reducing section is engraved with external threads, the hollow drill is engraved with internal threads, the internal threads of the hollow drill are screwed with the external threads of the reducing section to fix the hollow drill to the slotted steel pipe, and the outer diameter of the hollow drill is the same as the outer diameter of the slotted steel pipe.
4. The auxiliary drilling device according to claim 2, wherein the threaded connection section of the head end is an internal thread engraved on the inner wall of the slotted steel pipe, the hollow drill bit is engraved with an external thread, the external thread of the hollow drill bit is screwed with the internal thread of the head end of the slotted steel pipe to fix the hollow drill bit to the slotted steel pipe, and the external diameter of the hollow drill bit is the same as the external diameter of the slotted steel pipe.
5. The auxiliary drilling device as claimed in claim 3 or 4, wherein the threaded connection section at the tail end is a reducing section, the reducing section is carved with external threads, one end of the adapter is carved with internal threads, and the internal threads of the adapter are screwed with the external threads of the reducing section to realize that the adapter is fixed on the slotted steel pipe.
6. The auxiliary drilling device as claimed in claim 3 or 4, wherein the threaded connection section at the tail end is an internal thread engraved on the inner wall of the slotted steel pipe, an external thread is engraved at one end of the adapter, and the external thread of the adapter is screwed with the internal thread at the tail end of the slotted steel pipe to fix the adapter to the slotted steel pipe.
7. The auxiliary drilling device of claim 3 or 4, wherein the threaded connection section at the tail end is an external thread carved on the outer wall of the slotted steel pipe, an internal thread is carved at one end of the adapter, and the internal thread of the adapter is screwed with the external thread at the tail end of the slotted steel pipe to fix the adapter to the slotted steel pipe.
8. The auxiliary drilling device according to claim 1, wherein the outer diameter of the slotted steel pipe is 28mm, the inner diameter is 24mm, the width of the pipe slot is 4mm, and the outer diameter of the hollow drill bit is 28 mm.
9. The auxiliary drilling device of claim 8, wherein the slotted steel tube is 1.5-2.5m long.
10. The auxiliary drilling apparatus of claim 9 wherein said slotted steel tube is 2m long.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020738355.1U CN212154813U (en) | 2020-05-08 | 2020-05-08 | Auxiliary drilling device of shear-resistant anchor pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020738355.1U CN212154813U (en) | 2020-05-08 | 2020-05-08 | Auxiliary drilling device of shear-resistant anchor pipe |
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| Publication Number | Publication Date |
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| CN212154813U true CN212154813U (en) | 2020-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020738355.1U Active CN212154813U (en) | 2020-05-08 | 2020-05-08 | Auxiliary drilling device of shear-resistant anchor pipe |
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- 2020-05-08 CN CN202020738355.1U patent/CN212154813U/en active Active
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