CN111119193A - Detachable and recyclable anchor rod and construction method thereof - Google Patents
Detachable and recyclable anchor rod and construction method thereof Download PDFInfo
- Publication number
- CN111119193A CN111119193A CN201911356188.2A CN201911356188A CN111119193A CN 111119193 A CN111119193 A CN 111119193A CN 201911356188 A CN201911356188 A CN 201911356188A CN 111119193 A CN111119193 A CN 111119193A
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- section
- rod
- drill bit
- drill
- anchor rod
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
Abstract
The invention relates to the technical field of anchor rods, in particular to a detachable and recyclable anchor rod and a construction method thereof. The drilling bit section and the drilling rod section can be mutually spliced through the zipper expansion type fixing device or can be independently spliced through the zipper expansion type fixing device, and the drilling bit section and the drilling rod section are suitable for different-depth construction; when a longer anchor rod is fixed, a steel wire rope penetrates into the anchor rod, a drill bit is fixed at the head end, the locking rod at the splicing position can be opened by rotating the sleeve at the tail end after the anchor rod is drilled into the anchor rod, and the anchor rod is fixed at a plurality of positions, so that the anchor rod is more firmly fixed; the lead screw is introduced into to inside when short stock is fixed, can be fixed the stock through rotating tail end nut, loosens the outside stock that stimulates of nut and can easily pull out.
Description
Technical Field
The invention relates to the technical field of anchor rods, in particular to a detachable and recyclable anchor rod and a construction method thereof.
Background
Because facilities such as roads, buildings and pipelines in urban areas are dense, the influence of foundation pit support on the surrounding environment is continuously enlarged, a large number of anchor rods are buried underground, and the influence on subsequent construction, foundation pit excavation of adjacent plots, subway construction and long-term urban planning is possible. In view of the above problems, a recyclable anchor is a new technology to solve the problem.
The prior art mainly comprises a hot melting recoverable anchor rod, a high-pressure rotary spraying anchor rod with a main rib detachable, an engineering plastic recoverable anchor rod, a slurry bag type recoverable anchor rod and a hollow plate air bag recoverable anchor rod; the working principle of the anchor rod fixing device is that the anchor rod is fixed through expansion of the anchor head, the fixing end face of the anchor rod is single, and the fixing strength is low.
The recoverable anchor rod in the prior art is not recovered in a complete sense, the head component is remained in the rock-soil body after recovery, the recovery rate is low, and the anchor rod is easily scrapped after being pulled out; most of the recoverable anchor rods still need grouting maintenance, so that the construction period is long; the anchor rod device is complicated, the reliability is difficult to guarantee, and the stress concentration of the bearing body is obvious.
Disclosure of Invention
The invention aims to solve the technical problems and provides a detachable recovery type anchor rod and a construction method thereof aiming at the technical defects, wherein the detachable recovery type anchor rod mainly comprises a drill bit section, a drill rod section and a zipper expansion type fixing device, the drill bit section and the drill rod section can be spliced with each other through the zipper expansion type fixing device or can be spliced through the zipper expansion type fixing device independently, and the detachable recovery type anchor rod is suitable for construction at different depths; when a longer anchor rod is fixed, a steel wire rope penetrates into the anchor rod, a drill bit is fixed at the head end, the locking rod at the splicing position can be opened by rotating the sleeve at the tail end after the anchor rod is drilled into the anchor rod, and the anchor rod is fixed at a plurality of positions, so that the anchor rod is more firmly fixed; the lead screw is introduced into to inside when short stock is fixed, can be fixed the stock through rotating tail end nut, loosens the outside stock that stimulates of nut and can easily pull out.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the construction method comprises long anchor rod construction and short anchor rod construction, and is characterized by comprising an anchoring head, a drill bit section, a drill rod section, a fixed disc, a steel wire rope, a screw rod, a nut, a tensioning sleeve and a zipper expansion type fixing device; the front end of the anchoring head is provided with a twist drill bit; the rear end of the anchoring head is provided with a key block; the anchoring head is arranged at the front end of the drill bit section; the drill bit section and the drill bit section, the drill bit section and the drill rod section are respectively connected through a zipper expansion type fixing device; and a stop block is fixedly arranged at the left end of the steel wire rope.
Further optimizing the technical scheme, the zipper expansion type fixing device comprises two lantern rings and a plurality of lock rods; a plurality of connecting seats are uniformly arranged on the periphery of the lantern ring; the rotating shaft at the bottom of the lock rod is connected to the connecting seat; the tops of the lock rods on the two lantern rings are connected corresponding to the rotating shaft.
Further optimizing the technical scheme, the two ends of the drill rod section are provided with thread isolation platforms; the screw thread directions of the two screw thread isolation platforms are opposite.
Further optimizing the technical scheme, the lantern ring is in threaded connection with the threaded partition table; a clamping groove is formed in the front-end thread partition platform; a clamping block is arranged on the thread partition table at the tail end; a through groove is arranged in the middle of the drill rod section in a penetrating manner in the length direction; the length of the drill rod section is greater than that of the drill bit section; the drill bit section and the drill rod section have the same structure.
Further optimizing the technical scheme, the right side of the fixed disc is provided with a sleeve; the tensioning sleeve and the nut are in threaded connection with the right side of the sleeve; a baffle plate is arranged on the right side of the tensioning sleeve; the middle part of the baffle is provided with a through hole.
The long anchor rod construction method comprises the following steps:
(1) a steel wire rope penetrates through a through groove in the middle of the drill bit section, an anchoring head is fixed at the front end of the drill bit section, and a fixture block at the tail of the drill bit section is fixed on a drilling machine to drill;
(2) the steel wire rope is sequentially penetrated with a zipper expansion type fixing device and a first section of drill rod section, the drill rod section is connected with the first section of drill rod section through the zipper expansion type fixing device, and a fixture block at the tail part of the first section of drill rod section is fixed on a drilling machine for drilling;
(3) the steel wire rope is sequentially penetrated with a zipper expansion type fixing device and a second section of drill rod section, the first section of drill rod section and the second section of drill rod section are connected through the zipper expansion type fixing device, and a clamping block at the tail part of the second section of drill rod section is fixed on a drilling machine for drilling;
(4) repeating the step (3), splicing the nth section of the drill rod section, and inserting the anchor rod to the specified depth;
(5) and a sleeve is inserted into a clamping block at the tail end of the nth section of the drill rod section, and the steel wire rope is locked at the rear side of the baffle through two buckles.
(6) The tightening sleeve is rotated anticlockwise, the lock rod is automatically opened, and the anchor rod can be fixed.
When the short anchor rod is fixed, the method comprises the following steps:
(1) a screw rod penetrates through a through groove in the middle of the drill bit section, and a nut is mounted at the front end of the screw rod;
(2) the slide fastener expansion type fixing device and the second section of drill bit section are sequentially penetrated into the screw rod, and the first section of drill bit section and the second section of drill bit section are connected through the slide fastener expansion type fixing device;
(3) repeating the step (2), splicing the nth section of drill bit section, and assembling the nth section of drill bit section to the anchor rod with the specified length;
(4) inserting the assembled anchor rod into a hole which is drilled in advance;
(5) two nuts are screwed into the screw rod at the tail end of the nth section of drill bit section, the locking rod is automatically opened, and the anchor rod is fixed.
Compared with the prior art, the invention has the following advantages:
1. the drill bit section is shorter than the drill rod section, the drill bit section and the drill rod section can be spliced with each other through the zipper expansion type fixing devices, and can also be spliced through the zipper expansion type fixing devices independently, so that the device is suitable for different-depth construction.
2. When longer stock is fixed, inside penetrates wire rope, the drill bit is fixed to the head end, it can open the locking lever of concatenation position through the sleeve that rotates the tail end after the stock to drill into, thereby realize that a plurality of positions fix the stock, thereby make the stock fixed more firm, solved current non-recoverable stock of pouring, its theory of operation all is that the inflation comes the stock to be fixed through anchor head department, the stock is fixed the terminal surface and is more single, the lower problem of fixed strength.
3. When the long anchor rod is recovered, the sleeve is rotated reversely, the anchor rod is pulled outwards, the lock rod is automatically recovered, the fixed state of the anchor rod is relieved, the anchor rod can be easily pulled out at the moment, the recovery is simple, and the recovery rate of the anchor rod is high.
4. When the short anchor rod is fixed, the drill bit section and the drill rod section can be freely spliced according to requirements, the lead screw is introduced into the short anchor rod, nuts are arranged at the head and the tail of the lead screw, the lock rod can be opened by rotating the tail end nut, and the anchor rod can be fixed.
5. When the short anchor rod is recovered, the nut is rotated reversely, the anchor rod is pulled outwards, the lock rod is automatically recovered, the fixed state of the short anchor rod is relieved, the short anchor rod can be easily extracted at the moment, and the recovery rate of the anchor rod is high.
Drawings
Fig. 1 is a perspective view showing an installation state of a long anchor rod of a detachable recovery type anchor rod and a construction method thereof.
Fig. 2 is a schematic view of the overall structure of a long anchor rod of a detachable recovery type anchor rod and a construction method thereof.
Fig. 3 is a partial exploded view of a long anchor head mounting structure of a detachable recovery type anchor and a construction method thereof.
Fig. 4 is a partial sectional view of a structure of a long anchor rod middle splicing position closing process of a detachable recovery type anchor rod and a construction method thereof.
Fig. 5 is a partial sectional view of a structure of a long anchor rod middle splicing position opening process of a detachable recovery type anchor rod and a construction method thereof.
Fig. 6 is a partial sectional view of a long anchor rod tail mounting structure of a detachable recovery type anchor rod and a construction method thereof.
Fig. 7 is a perspective view of an overall installation structure of a short anchor rod of a detachable recovery type anchor rod and a construction method thereof.
Fig. 8 is a partial sectional view of an internal mounting structure of a short anchor rod of a detachable recovery type anchor rod and a construction method thereof.
In the figure: 1. an anchoring head; 101. a key block; 2. a drill bit section; 3. a drill rod section; 301. a thread partition table; 302. a card slot; 303. a clamping block; 304. a through groove; 4. fixing the disc; 401. a sleeve; 5. a wire rope; 501. a stopper; 6. a screw rod; 7. a nut; 8. tightening the sleeve; 801. a baffle plate; 802. a through hole; 9. a zipper expansion type fixing device; 901. a collar; 902. a lock lever; 903. a connecting seat.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The first embodiment is as follows: referring to fig. 1 to 8, a detachable recovery type anchor rod and a construction method thereof are characterized in that: the construction method comprises long anchor rod construction and short anchor rod construction, and is characterized by comprising an anchoring head 1, a drill bit section 2, a drill rod section 3, a fixed disc 4, a steel wire rope 5, a screw rod 6, a nut 7, a tensioning sleeve 8 and a zipper expansion type fixing device 9; the front end of the anchoring head 1 is provided with a twist drill bit; the rear end of the anchoring head 1 is provided with a key block 101; the anchoring head 1 is arranged at the front end of the drill bit section 2; the drill bit section 2 and the drill bit section 2, the drill bit section 2 and the drill rod section 3 are respectively connected through a zipper expansion type fixing device 9; and a stop block 501 is fixedly arranged at the left end of the steel wire rope 5.
Preferably, said zip-lock expanded fixation means 9 comprise two collars 901 and a plurality of locking bars 902; a plurality of connecting seats 903 are uniformly arranged on the periphery of the lantern ring 901; the rotating shaft at the bottom of the lock rod 902 is connected to the connecting seat 903; the tops of the lock rods 902 on the two lantern rings 901 are connected corresponding to the rotating shaft.
Preferably, both ends of the drill rod section 3 are provided with thread isolation platforms 301; the thread directions of the two thread spacers 301 are opposite.
Preferably, the collar 901 is screwed on the threaded spacer 301; a clamping groove 302 is arranged on the front end thread partition platform 301; a clamping block 303 is arranged on the tail end thread partition platform 301; a through groove 304 is arranged in the middle of the drill rod section 3 in a penetrating manner in the length direction; the length of the drill rod section 3 is greater than that of the drill bit section 2; the drill bit section 2 and the drill rod section 3 have the same structure.
Preferably, a sleeve 401 is arranged on the right side of the fixed disc 4; the tensioning sleeve 8 and the nut 7 are in threaded connection with the right side of the sleeve 401; a baffle 801 is arranged on the right side of the tensioning sleeve 8; the middle part of the baffle 801 is provided with a through hole 802.
The long anchor rod construction method comprises the following steps:
(1) a steel wire rope 5 penetrates through a through groove 304 in the middle of the drill bit section 2, an anchoring head 1 is fixed at the front end of the drill bit section 2, and a fixture block 303 at the tail part of the drill bit section 2 is fixed on a drilling machine for drilling;
(2) a zipper expansion type fixing device 9 and a first section of drill rod section 3 are sequentially penetrated into a steel wire rope 5, a drill bit section 2 is connected with the first section of drill rod section 3 through the zipper expansion type fixing device 9, and a fixture block 303 at the tail part of the first section of drill rod section 3 is fixed on a drilling machine to drill a hole;
(3) a zipper expansion type fixing device 9 and a second section of drill rod section 3 are sequentially penetrated into the steel wire rope 5, the first section of drill rod section 3 and the second section of drill rod section 3 are connected through the zipper expansion type fixing device 9, and a fixture block 303 at the tail part of the second section of drill rod section 3 is fixed on a drilling machine for drilling;
(4) repeating the step (3), splicing the nth section of the drill rod section 3, and inserting the anchor rod to a specified depth;
(5) the sleeve 401 is inserted into the fixture block 303 at the tail end of the nth drill rod section 3, and the steel wire rope 5 is locked at the rear side of the baffle 801 through two buckles.
(6) The tightening sleeve 8 is rotated anticlockwise, the locking rod 902 is automatically opened, and the anchor rod is fixed.
When the short anchor rod is fixed, the method comprises the following steps:
(1) a screw rod 6 is inserted into a through groove 304 in the middle of the drill bit section 2, and a nut 7 is arranged at the front end of the screw rod 6;
(2) a zipper expansion type fixing device 9 and a second section of drill bit section 2 are sequentially penetrated into the screw rod 6, and the first section of drill bit section 2 and the second section of drill bit section 2 are connected through the zipper expansion type fixing device 9;
(3) repeating the step (2), splicing the nth section of drill bit section 2, and assembling the nth section of drill bit section to an anchor rod with a specified length;
(4) inserting the assembled anchor rod into a hole which is drilled in advance;
(5) two nuts 7 are screwed into the screw rod 6 at the tail end of the nth section of drill bit 2, the lock rod 902 is automatically opened, and the anchor rod is fixed.
The construction principle of the long anchor rod is as follows:
step one, as shown in fig. 1-4, an anchoring head 1 is installed at the front end of a drill bit section 2, and a plurality of drill rod sections 3 are connected at the rear part of the drill bit section 2, so that a long drill rod is formed, and a stop block 501 is fixedly arranged at the left end of a steel wire rope 5; the rear end of the anchoring head 1 is provided with a key block 101; the lantern ring 901 is in threaded connection with the threaded partition table 301; a clamping groove 302 is arranged on the front end thread partition platform 301; a clamping block 303 is arranged on the tail end thread partition platform 301; a through groove 304 is arranged in the middle of the drill rod section 3 in a penetrating manner in the length direction; the length of the drill rod section 3 is greater than that of the drill bit section 2; the drill bit section 2 and the drill rod section 3 have the same structure, the steel wire rope 5 penetrates through the middle of the through groove 304 from the left side of the drill bit section 2, and then the steel wire rope 5 is pulled towards the right side, so that the clamping block 303 at the left end of the steel wire rope 5 is positioned in the clamping groove 302 at the left side of the drill bit section 2; the key 101 behind the anchor head 1 is then inserted into the bayonet slot 302 of the drill bit section 2.
The fixture block 303 at the tail end of the drill bit section 2 is fixed on a drilling machine for construction, the drill bit section 2 is clamped with the anchoring head 1 through the key block 101 and the clamping groove 302 to rotate when rotating, and the front end of the anchoring head 1 is provided with the twist drill, so that the anchoring head 1 can drive the drill bit section 2 at the rear to move forwards together when rotating for drilling.
When the drill bit section 2 is drilled to a certain depth, the steel wire rope 5 is penetrated into the zipper expansion type fixing device 9 and the first drill rod section 3, and the clamping groove 302 at the front end of the first drill rod section 3 is inserted into the clamping block 303 at the rear end of the drill bit section 2; because the two ends of the drill rod section 3 are both provided with the thread isolation platforms 301; the screw thread directions of the two screw thread isolation platforms 301 are opposite; the lantern ring 901 is in threaded connection with the threaded partition table 301', so that the lantern ring 901 can be driven to be screwed into the threaded partition table 301 by rotating the zipper expansion type fixing device 9, and the two threaded partition tables 301 have opposite threaded directions, so that the two lantern rings 901 can be simultaneously fixed on the threaded partition tables 301 at the tail end of the drill bit section 2 and the front end of the drill rod section 3; the drill bit section 2 and the first drill rod section 3 are connected.
And (3) fixing the fixture block 303 at the tail end of the first drill rod section 3 on a drilling machine for drilling.
Step two, as shown in fig. 1 to 6, when the first section of drill rod section 3 is drilled to a certain depth, the steel wire rope 5 is penetrated into the zipper expansion type fixing device 9 and the second section of drill rod section 3, the clamping groove 302 at the front end of the second section of drill rod section 3 is inserted into the clamping block 303 at the tail end of the first section of drill rod section 3, then the sleeve ring 901 on the zipper expansion type fixing device 9 is used for connecting the tail end of the first section of drill rod section 3 with the threaded partition table 301 at the front end of the second section of drill rod section 3, and the first section of drill rod section 3 is connected with the second section of drill rod section 3.
And fixing the fixture block 303 at the tail end of the second drill rod section 3 on a drilling machine for construction.
When the second section of drill rod section 3 is drilled into a certain depth, the zipper expansion type fixing device 9 and the third drill rod section 3 are penetrated and connected in the same way, the third drill rod section 3 is drilled into, the operations are repeated, and the fourth section and the fifth section are drilled in sequence until the nth section of drill rod section 3 is drilled into, and the whole drill rod is inserted into the specified depth.
Step three, as shown in fig. 1-6, after the drilling of the nth section of drill rod section 3 is finished, the drilling machine is removed, then the sleeve 401 is inserted into the position of the clamping block 303 at the tail of the nth section of drill rod section 3, the fixed disk 4 is buckled on the wall body forwards, then the nut 7 and the lacing wire sleeve are inserted into the steel wire rope 5 and screwed into the foremost end, the buckle is fixed on the steel wire rope 5 behind the lacing wire sleeve, and the steel wire rope 5 is cut out behind the buckle; (it is also possible to prefabricate a prescribed length of the wire rope 5 in advance).
By rotating the tensioning sleeve 8 anticlockwise through the wrench, the tensioning sleeve 8 moves to the right along the sleeve 401 when rotating anticlockwise, so that the buckle and the steel wire rope 5 are pushed to move to the right through the baffle 801.
So that the drill rods start to merge towards the middle under the drive of the steel wire rope 5.
Since the' zipper expansion type fixing means 9 comprises two collars 901 and a plurality of locking bars 902; a plurality of connecting seats 903 are uniformly arranged on the periphery of the lantern ring 901; the rotating shaft at the bottom of the lock rod 902 is connected to the connecting seat 903; the tops of the locking rods 902 on the two lantern rings 901 are connected with the rotating shaft, so that when the drill rods are combined towards the middle part, the clamping blocks 303 at the connecting positions are driven to be inserted into the clamping grooves 302, the lantern rings 901 at the two sides of the connecting positions move towards the middle part, when the lantern rings 901 are combined towards the middle part, the locking rods 902 at the two sides are driven to be outwards turned, and the locking rods 902 are outwards turned and inserted into soil; when the steel wire rope 5 is tensioned to a certain degree, the nut 7 on the front side is rotated anticlockwise, the tensioning sleeve 8 is locked through the nut 7, and the tensioning sleeve 8 is prevented from loosening under the action of reverse force.
Because of long stock comprises drill bit festival 2 and multisection drill rod festival 3, its hookup location all inserts soil through a plurality of locking levers 902 and fixes to make the stock fix through a plurality of positions on length direction, the stock is fixed more firm, has solved current non-recoverable stock of pouring, and its theory of operation all is that the inflation is fixed with the stock through anchor head department, and the stock is fixed the terminal surface more single, the lower problem of fixed strength.
Step four, as shown in fig. 1-6, when the long anchor rod is recovered, the lock catch on the steel wire rope 5 is released, at this time, the tension state of the steel wire rope 5 is released, the fixed disk 4 is pulled outwards, the outermost drill rod section 3 moves outwards, the lantern ring 901 at the connection position of the outermost drill rod section 3 starts to separate, so that the lock rod 902 on the lantern ring 901 rotates towards the middle part, the lock rod 902 falls and merges towards the middle part, and at this time, the lock rod 902 inserted into the soil is pulled out; the locking rod 902 that continues 4 the place ahead hookup locations of rearward pulling fixed disk is extracted from soil in proper order, and when all locking rods 902 were extracted from soil, the drill bit festival 2 and the first 1 separation of anchor of front end, the fixed tight state of expanding of stock was relieved, can easily extract the stock, to sum up, when long stock retrieves, reverse rotation sleeve 401 outwards stimulates the stock, and locking rod 902 is automatic to be retrieved, and the stock fixed state is relieved, can easily pull the stock this moment, retrieves simply, and the stock rate of recovery is high.
Short anchor rod construction principle:
step one, as shown in fig. 7 and 8, because the fixed position is shallow, holes can be pre-drilled through a machine, a screw rod 6 is inserted into a drill bit section 2, a nut 7 is screwed into the front end of the screw rod 6, then a zipper expansion type fixing device 9 and a second drill bit section 2 are installed behind the drill bit section 2, a clamping groove 302 at the front end of the second drill bit section 2 is inserted into a clamping block 303 at the tail of the first drill bit section 2, and the first drill bit section 2 is connected with the second drill bit section 2 by rotating a lantern ring 901 on the zipper expansion type fixing device 9; and then sequentially splicing and assembling a third section and a fourth section behind the drill bit section 2, finally splicing into a short anchor rod with a specified length, and inserting the whole anchor rod into the pre-selected and drilled hole diameter.
And screwing a nut 7 into the tail end of the screw rod 6, rotating the nut 7 clockwise, contacting the left side surface of the nut 7 with the right side surface of the clamping block 303 at the tail part of the nth drill bit section 2, and continuing to rotate the nut 7, so that the screw rod 6 is pulled to move towards the right side through the nut 7.
Therefore, the short anchor rods are combined towards the middle under the pushing of the nuts 7 on the two sides of the screw rod 6, the lantern ring 901 at the connecting position is driven to be combined towards the middle in the process, the lock rod 902 is automatically opened and inserted into the soil, and the short anchor rods are fixed.
The depth is shallow, and under the prerequisite that can guarantee that short stock drill bit can extract, above-mentioned process also can be at the fixed traditional stock drill bit of 2 front ends of first section drill bit festival, need not the preselection and punch, directly drill into short stock, then through rear nut 7 locking fixed can.
And step two, as shown in fig. 8, when the short anchor rod is retracted, the nut 7 is rotated reversely, at this time, the tensioning state of the screw rod 6 is released, the last section of drill bit section 2 is pulled outwards, the lock rod 902 at the last connecting position is retracted, then the drill bit sections 2 are continuously pulled, the lock rods 902 at the front connecting position are sequentially retracted, the fixed expansion state of the short anchor rod is released, and the short anchor rod can be easily pulled out.
Therefore, when the short anchor rod is recovered, the nut 7 is rotated reversely, the anchor rod is pulled outwards, the lock rod 902 is automatically recovered, the fixed state of the short anchor rod is released, the short anchor rod can be easily pulled out at the moment, and the recovery rate of the anchor rod is high.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (7)
1. A detachable recovery anchor rod and a construction method thereof comprise long anchor rod construction and short anchor rod construction, and are characterized by comprising an anchoring head 1, a drill bit section 2, a drill rod section 3, a fixed disc 4, a steel wire rope 5, a screw rod 6, a nut 7, a tensioning sleeve 8 and a zipper expansion type fixing device 9; the front end of the anchoring head 1 is provided with a twist drill bit; the rear end of the anchoring head 1 is provided with a key block 101; the anchoring head 1 is arranged at the front end of the drill bit section 2; the drill bit section 2 and the drill bit section 2, the drill bit section 2 and the drill rod section 3 are respectively connected through a zipper expansion type fixing device 9; and a stop block 501 is fixedly arranged at the left end of the steel wire rope 5.
2. The detachable recovery type anchor rod and the construction method thereof according to claim 1, wherein: the zipper expansion type fixing device 9 comprises two lantern rings 901 and a plurality of lock rods 902; a plurality of connecting seats 903 are uniformly arranged on the periphery of the lantern ring 901; the rotating shaft at the bottom of the lock rod 902 is connected to the connecting seat 903; the tops of the lock rods 902 on the two lantern rings 901 are connected corresponding to the rotating shaft.
3. The detachable recovery type anchor rod and the construction method thereof according to claim 1, wherein: the two ends of the drill rod section 3 are both provided with thread isolation platforms 301; the thread directions of the two thread spacers 301 are opposite.
4. A detachable recovery type anchor rod and a construction method thereof according to claim 2 or 3, wherein: the lantern ring 901 is in threaded connection with the threaded partition table 301; a clamping groove 302 is arranged on the front end thread partition platform 301; a clamping block 303 is arranged on the tail end thread partition platform 301; a through groove 304 is arranged in the middle of the drill rod section 3 in a penetrating manner in the length direction; the length of the drill rod section 3 is greater than that of the drill bit section 2; the drill bit section 2 and the drill rod section 3 have the same structure.
5. The detachable recovery type anchor rod and the construction method thereof according to claim 1, wherein: a sleeve 401 is arranged on the right side of the fixed disc 4; the tensioning sleeve 8 and the nut 7 are in threaded connection with the right side of the sleeve 401; a baffle 801 is arranged on the right side of the tensioning sleeve 8; the middle part of the baffle 801 is provided with a through hole 802.
6. The detachable recovery type anchor rod and the construction method thereof according to any one of claims 1 to 5, wherein the construction method of the long anchor rod comprises the steps of:
(1) a steel wire rope 5 penetrates through a through groove 304 in the middle of the drill bit section 2, an anchoring head 1 is fixed at the front end of the drill bit section 2, and a fixture block 303 at the tail part of the drill bit section 2 is fixed on a drilling machine for drilling;
(2) a zipper expansion type fixing device 9 and a first section of drill rod section 3 are sequentially penetrated into a steel wire rope 5, a drill bit section 2 is connected with the first section of drill rod section 3 through the zipper expansion type fixing device 9, and a fixture block 303 at the tail part of the first section of drill rod section 3 is fixed on a drilling machine to drill a hole;
(3) a zipper expansion type fixing device 9 and a second section of drill rod section 3 are sequentially penetrated into the steel wire rope 5, the first section of drill rod section 3 and the second section of drill rod section 3 are connected through the zipper expansion type fixing device 9, and a fixture block 303 at the tail part of the second section of drill rod section 3 is fixed on a drilling machine for drilling;
(4) repeating the step (3), splicing the nth section of the drill rod section 3, and inserting the anchor rod to a specified depth;
(5) the sleeve 401 is inserted into the fixture block 303 at the tail end of the nth drill rod section 3, and the steel wire rope 5 is locked at the rear side of the baffle 801 through two buckles.
(6) The tightening sleeve 8 is rotated anticlockwise, the locking rod 902 is automatically opened, and the anchor rod is fixed.
7. The detachable recovery type anchor rod and the construction method thereof according to any one of claims 1 to 5, wherein when the short anchor rod is fixed, the method comprises the steps of:
(1) a screw rod 6 is inserted into a through groove 304 in the middle of the drill bit section 2, and a nut 7 is arranged at the front end of the screw rod 6;
(2) a zipper expansion type fixing device 9 and a second section of drill bit section 2 are sequentially penetrated into the screw rod 6, and the first section of drill bit section 2 and the second section of drill bit section 2 are connected through the zipper expansion type fixing device 9;
(3) repeating the step (2), splicing the nth section of drill bit section 2, and assembling the nth section of drill bit section to an anchor rod with a specified length;
(4) inserting the assembled anchor rod into a hole which is drilled in advance;
(5) two nuts 7 are screwed into the screw rod 6 at the tail end of the nth section of drill bit 2, the lock rod 902 is automatically opened, and the anchor rod is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113668526A (en) * | 2021-10-08 | 2021-11-19 | 沈阳建筑大学 | Land wind power foundation prestress spiral anchor rod structure capable of being recycled |
| CN114606936A (en) * | 2022-01-20 | 2022-06-10 | 扬州大学 | Self-expanding type expansion recoverable anchor rod |
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| CN114606936A (en) * | 2022-01-20 | 2022-06-10 | 扬州大学 | Self-expanding type expansion recoverable anchor rod |
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| CN111119193B (en) | 2021-09-14 |
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