CN112127927B - Single-recyclable anchor rod - Google Patents
Single-recyclable anchor rod Download PDFInfo
- Publication number
- CN112127927B CN112127927B CN202011040785.7A CN202011040785A CN112127927B CN 112127927 B CN112127927 B CN 112127927B CN 202011040785 A CN202011040785 A CN 202011040785A CN 112127927 B CN112127927 B CN 112127927B
- Authority
- CN
- China
- Prior art keywords
- core
- bearing
- fixed
- outer sleeve
- tensile
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/0033—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/004—Bolts held in the borehole by friction all along their length, without additional fixing means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/006—Anchoring-bolts made of cables or wires
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
Abstract
The invention relates to a single-root recovery type anchor rod which comprises a bearing core, a bearing seat, clamping pieces, a protective cap and an outer sleeve, wherein one end of the outer sleeve is fixedly sealed with the bearing seat, and the other end of the outer sleeve is fixedly sealed with a tensioning end of the bearing core. The bearing core is in a pretension state, the fixed end and the clamping piece are mutually squeezed, the fixed end is pre-fixed on the bearing seat, the clamping piece is not easy to loosen, normal work of an anchor is guaranteed, when the bearing core is recovered, the outer sleeve and the bearing core are released, acting force can be applied to the bearing core to enable the bearing core to move into the protective sleeve, the clamping piece is separated from the wall of a fixing hole of the bearing core, the clamping piece is separated from the bearing core, and the bearing core can be directly pulled out. The bearing core of the anchor device disclosed by the invention is kept in a pretensioned state through the outer sleeve, the structure is simple, and the bearing core is only required to be pushed and pulled when being recovered, so that the operation is convenient.
Description
Technical Field
The invention relates to a single recyclable anchor rod.
Background
The prestress bearing core is widely applied to constructional engineering, when an original building is out of action and needs to be dismantled and a new building is built, such as shield construction, the prestress bearing core used by the original building needs to be subjected to a construction procedure of breaking the prestress bearing core, and the construction cost is increased.
The Chinese patent with the authorized bulletin number of CN210421087U and the authorized bulletin day of 2020.04.28 discloses a massive quick-release recoverable anchorage device, which comprises a guide rail protective cap, a clamping piece, a conical clamp, a bearing disc, a protective sheath and a steel strand, wherein the open end of the protective cap is connected with the conical clamp, the end of the steel strand penetrates through the protective sheath and is inserted into a through hole of the conical clamp, and one end of the clamping piece is wedged into a space between the steel strand and the conical clamp. The content of the protective cap is also provided with a quick dismounting mechanism, one end of the quick dismounting mechanism is connected with the clamping piece for rotation, and the other end of the quick dismounting mechanism is connected with the other end of the clamping piece through a spring and the closed end of the protective cap. The anchor is the stock, and the steel strand wires are the outer tube that the steel strand wires were used for holding the core and pass promptly, when need demolish the anchor, push the steel strand wires to spring direction by force through outer end manpower, drive spring, install and remove component and clamping piece and follow the spacing guide rail motion in the protective cap, get into locking state, and at this moment, the clamping piece breaks away from conical fixture, then outwards pulls the steel strand wires and can pull out the steel strand wires. When the bearing core is recovered, the anchor device needs to rotate the protective cap, is inconvenient to operate, and is internally provided with the limiting guide rail and a plurality of assembling and disassembling components, so that the guide rail protective cap is complex in internal structure and high in processing cost.
Disclosure of Invention
The invention aims to provide a single-root recovery type anchor rod, which is used for solving the technical problems that the existing anchorage device is inconvenient to operate and has complex structure and high processing cost when a bearing core is recovered.
The invention discloses a single recyclable anchor rod, which adopts the following technical scheme:
the single recoverable anchor rod comprises:
one end of the bearing core is a fixed end, and the other end is a tensioning end;
the bearing seat is provided with a bearing core fixing hole for the bearing core to pass through;
the clamping piece is arranged in the bearing core fixing hole, the bearing core is wedged and fixed, and an isolation structure is arranged between the clamping piece and the wall of the bearing core fixing hole;
the protective cap is fixed on the bearing seat;
an outer sleeve for passing through the bearing core;
one end of the outer sleeve is fixedly sealed with the bearing seat, the other end of the outer sleeve is fixedly sealed with the tensioning end of the bearing core, the bearing core is pretensioned, and the fixed end is pre-fixed on the bearing seat through the clamping piece;
a gap is formed between the outer sleeve and the tensile core, and the tensile end of the tensile core is fixed with the outer sleeve and enables the tensile core to move relative to the outer sleeve;
when the anchor rod is recovered, the clamping piece and the wall of the fixing hole of the bearing and pulling core can be separated by releasing the fixing of the outer sleeve and the tensioning end and applying an acting force to the bearing and pulling core
The beneficial effects are that: the bearing core of the single recovery type anchor rod is in a pretensioned state, the fixed end and the clamping piece are mutually squeezed, the fixed end is pre-fixed on the bearing seat, the clamping piece is not easy to loosen, the normal work of the anchor is ensured, when the bearing core needs to be recovered, the outer sleeve and the bearing core are released, the bearing core can be moved into the protective sleeve by applying an acting force to the bearing core, the clamping piece is separated from the wall of the fixing hole of the bearing core, and the bearing core can be directly pulled out after the clamping piece is separated from the bearing core. An isolation structure is arranged between the clamping piece and the wall of the bearing core fixing hole to prevent the clamping piece from adhering to the wall of the bearing core fixing hole, so that acting force between the clamping piece and the wall of the bearing core fixing hole is reduced, and the clamping piece is convenient to separate from the bearing seat.
Further, the outer sleeve is fixedly connected with the stretching end of the bearing core in a pressing mode through the pressing sleeve, or the outer sleeve is fixedly connected with the stretching end of the bearing core through the anchor ear.
The beneficial effects are that: the fixing strength is higher through the anchor ear or the crimping sleeve.
Furthermore, a heat shrinkage pipe is arranged at the fixed position of the stretching end of the outer sleeve and the tensile end of the tensile core.
The beneficial effects are that: through setting up the pyrocondensation pipe at fixed position, improve sealed effect and fixed strength.
Further, the outer sleeve is fixedly sealed with the bearing core after being axially pre-pressed.
The beneficial effects are that: because outer tube one end is fixed on bearing seat, when later stage construction operation stretch-draw, bear the pull core and have certain deformation, bear the pull core the length have certain extension, and bear the pull core the stiff end position motionless, stretch-draw end has certain displacement, through the pre-compaction outer tube, can make the outer tube adapt to the change of bearing pull core length, reduce the stock and draw the probability that breaks the oversheath when later stage construction operation stretch-draw, also improve simultaneously and bear the pull core the pre-fixation effect.
Further, a stop structure is arranged in the protective cap, a stop surface is arranged on the stop structure, and when an acting force for enabling the support core to move towards the protective cap is applied to the tensioning end of the support core, the stop surface is used for being matched with the stop of the clamping piece after the clamping piece is separated from the wall of the support core fixing hole so as to enable the clamping piece to be separated from the support core.
The beneficial effects are that: the stop structure facilitates the separation of the bearing core and the clamping piece, and further facilitates the recovery of the bearing core.
Further, the retaining structure is a baffle plate fixed on the bearing seat, one side surface of the baffle plate facing the clamping piece forms the retaining surface, and the fixed end of the bearing core extends to one side of the baffle plate facing away from the clamping piece.
The beneficial effects are that: the fixed end of the bearing and pulling core extends to one side of the baffle, which is opposite to the clamping piece, so that the baffle and the bearing and pulling core can be prevented from being blocked mutually, and the later-stage clamping piece and the bearing and pulling core can be separated conveniently.
Further, the retaining structure is a baffle plate fixed on the bearing seat, one side surface of the baffle plate facing the clamping piece forms the retaining surface, a bearing core through hole for the bearing core to pass through is arranged on the baffle plate, and an orifice of the bearing core through hole is positioned on the retaining surface.
The clamping piece has the beneficial effects that the retaining surface can be conveniently matched with the clamping piece in a retaining way through the through holes of the bearing core.
Further, the distance between the stopping surface and the bearing seat is larger than the length of the clamping piece, so that the stopping surface is in stopping fit with the clamping piece stuck on the bearing core after the clamping piece is separated from the bearing core fixing hole.
The beneficial effects are that: after the clamping piece is separated from the bearing core fixing hole, the clamping piece can be guaranteed not to enter the bearing core fixing hole any more.
Further, the bearing seat comprises a connector fixed with the outer sleeve, an external thread is arranged on the connector, and the outer sleeve is screwed on the external thread and fixedly connected with the connector after thermal shrinkage.
The beneficial effects are that: the fixing strength of the outer sleeve and the bearing seat is improved.
Further, the single-root recovery type anchor rod comprises a bag, the bearing seat comprises a first fixing seat, a second fixing seat and a connecting pipe, the connecting pipe is connected with the first fixing seat and the second fixing seat, two ends of the bag are respectively connected with the first fixing seat and the second fixing seat, the protective cap is fixed with the second fixing seat, the bearing core fixing hole is formed in the second fixing seat, and the bearing core is pre-fixed on the second fixing seat after penetrating through the first fixing seat and the connecting pipe.
The beneficial effects are that: the anchoring effect of the anchor rod can be improved through the sac.
Drawings
FIG. 1 is a schematic view of the construction of an embodiment 1 of a single retrievable anchor rod of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
in the figure: 1-a tensile core; 2-a bearing seat; 21-a bearing core fixing hole; 22-a first fixing seat; 23-a second fixing seat; 24-connecting pipes; 3-a protective cap; 4-clamping pieces; 5-an outer sleeve; 6-isolating membrane pad; 7-a baffle; 71-perforating the tensile core; 8-a screw; 9-a pouch; 10-heat shrinking pipe; 11-a press-fit sleeve; 12-adjusting the nut; 13-grease.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
It is noted that relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The features and capabilities of the present invention are described in further detail below in connection with the examples.
Specific example 1 of a single retractable anchor of the present invention:
as shown in fig. 1 to 3, the single retractable anchor rod comprises a bearing core 1 and a bearing seat 2, wherein the rear end of the bearing core 1 is a fixed end fixed on the bearing seat 2, and the front end is a tensioning end for applying force to the jack to tension the bearing core 1. In this embodiment, four tensile cores are provided, and in other embodiments, according to actual needs, one tensile core, two tensile cores, three tensile cores and other arbitrary numbers may be provided.
The bearing seat 2 comprises a first fixed seat 22, a second fixed seat 23 and a connecting pipe 24 for connecting the first fixed seat 22 and the second fixed seat 23, wherein the front end of the connecting pipe 24 passes through the first fixed seat 22 and is welded and fixed with the first fixed seat 22, and the rear end is welded and fixed on the second fixed seat 23. The second fixing seat 23 is fixedly provided with a protective cap 3, and the protective cap 3 and the bearing seat 2 are welded and fixed and enclose a sealing cavity. The carrying seat 2 is provided with a bag 9, one end of the bag 9 is fixed on the first fixing seat 22, the other end is fixed on the second fixing seat 23, and a grouting pipe (not shown in the figure) is fixed on the first fixing seat 22 and can grouting into the bag 9. The specific structure of the pouch is prior art and will not be described in detail in this embodiment.
The bearing core 1 passes through the first fixing seat 22 and the connecting pipe 24 and then is fixed with the second fixing seat 23, the second fixing seat 23 of the bearing seat 2 is provided with a bearing core fixing hole 21, the bearing core fixing hole 21 is a taper hole, the fixed end of the bearing core 1 is fastened on the second fixing seat 23 through the wedge of the clamping piece 4, and the clamping piece 4 is matched with the bearing core fixing hole 21 to clamp the fixed end of the bearing core 1. When the tensioning end of the support core 1 is stressed, the support core 1 and the clamping piece 4 are mutually squeezed under the action of tension, so that the fixed end of the support core 1 is fixed. In this embodiment, the tensile core 1 is a steel bar, and in other embodiments, the tensile core may be a steel strand.
In order to avoid corrosion of the support core 1 and facilitate recovery of the support core 1, the support core 1 is sleeved with an outer sleeve 5. In this embodiment, one end of the outer sleeve 5 is fixed at the tensioning end of the tensile core 1, the other end is fixed on the connecting pipe 24 and sealed with the connecting pipe 24, and the tensile core 1 is in a pretensioned state, and the fixed end of the tensile core 1 is pre-fixed on the second fixing seat 23 through the clamping piece 4. The outer sleeve 5 is in clearance with the tensile core 1, and the tensile core can move relative to the outer sleeve after the tensile end of the tensile core is released from the outer sleeve. In order to ensure the tensioning effect, the outer sleeve is fixedly sealed with the bearing and pulling core 1 after being axially pre-pressed, when the anchor rod is anchored and tensioned, the tension of the bearing and pulling core 1 is increased, the outer sleeve 5 can be axially stretched, one end of the outer sleeve 5 can be fixedly connected with the bearing and pulling core 1, the other end of the outer sleeve 5 is fixedly connected with the bearing seat, and the sealing of the outer sleeve 5, the bearing seat and the bearing and pulling core 1 is not invalid. The outer sleeve in the embodiment can be a light flexible pipe such as a plastic pipe or a rubber pipe, and therefore the weight and the material cost of the whole anchor rod can be reduced on the premise that the steel stranded wires inside the outer sleeve can be effectively protected. The plastic pipe or the rubber pipe can be bent and deformed to a certain extent, so that the storage and the transportation of the anchor rod are facilitated.
The connecting pipe 24 is provided with an external thread at one end connected with the outer sleeve 5, and the outer sleeve 5 is screwed on the external thread, and the outer sleeve 5 is fixedly connected with the connecting head after heat shrinkage treatment. In order to ensure the sealing and fixing effects, in this embodiment, a heat shrinkage tube 10 is also arranged at the connection between the connector and the outer sleeve 5, and the heat shrinkage tube 10 is sleeved at the connection between the connector and the outer sleeve 5.
In this embodiment, the outer sleeve 5 is fixedly sealed with the stretching end of the stretching core 1 through the compression sleeve 11, after the compression sleeve 11 fixes the outer sleeve 5 with the stretching core 1, the heat shrinkage tube 10 is arranged at the fixing position of the outer sleeve 5 and the stretching end, the heat shrinkage tube 10 wraps the compression sleeve 11, and the sealing effect and the fixing effect of the joint of the outer sleeve 5 and the stretching core 1 are improved. In the embodiment, the lubricating grease 13 is arranged in the outer sleeve 5 and the protective cap 3, so that the inner corrosion of the tensile core 1 and the protective cap 3 can be prevented, and the subsequent pulling-out of the tensile core 1 is facilitated.
In the operation of transportation, carrying and the like before construction, the bearing core 1 is in a pretensioned state, two ends of the bearing core 1 are fixed, the tensioning ends are fixed with the outer sleeve 5, the fixed ends are pre-fixed on the second fixing seat 23 through the clamping pieces 4, and the clamping pieces 4 are prevented from falling out of the bearing core fixing holes 21 during the operation of transportation, carrying and the like of the bearing core 1, so that the subsequent normal anchoring operation is prevented from being influenced. According to the invention, the outer sleeve 5 is simply fixed with the stretching end of the tensile core 1, so that the free movement of the clamping piece 4 can be prevented, the structure is simple, and when the tensile core 1 is recovered, the recovery can be realized by pushing and pulling the tensile core 1, and the operation is simple.
When the tensile core 1 in this embodiment is recovered, the tensioning end of the tensile core 1 is located outside, the fixation of the tensioning end and the outer sleeve 5 is released, the compression sleeve 11 and the heat shrinkage tube 10 are removed, the tensile core 1 can relatively move in the outer sleeve 5, the tensile end is forced by hammering, so that the tensile core 1 moves towards the protective cap 3, and after the tensile core 1 moves towards the protective cap 3, the clamping piece 4 is driven to move towards the protective cap 3. The clamping piece 4 is separated from the wall of the bearing core fixing hole 21, the clamping piece 4 is separated from the bearing core fixing hole 21, and the fixing of the fixing end of the bearing core 1 is released.
In this embodiment, in order to facilitate the separation of the clamping piece 4 and the second fixing seat 23, the separation membrane pad 6 is disposed between the support core fixing hole 21 on the second fixing seat 23 and the clamping piece 4, and in this embodiment, the separation membrane pad is a plastic spacer.
In this embodiment, an isolation structure is arranged between the clamping piece and the wall of the fixing hole of the tensile core, and in other embodiments, the isolation structure may be a self-lubricating pad made of plastics, fibers, graphite, etc. In other embodiments, the isolation structure may be an isolation coating disposed on the clip, or an isolation coating disposed on a wall of the hole of the tensile core fixing hole, or an anchor release paste disposed between the clip and the wall of the hole of the tensile core fixing hole.
The clamping piece 4 with longer anchoring time is also easy to be stuck together with the carrying core 1, when the carrying core 1 is pulled out again after hammering the carrying core 1, the clamping piece 4 possibly enters the carrying core fixing hole 21 again, for further convenient disassembly operation, be provided with in the protective cap 3 with the clamping piece 4 the rear end face keep off complex baffle 7 in this embodiment, baffle 7 and the parallel interval arrangement of second fixing base 23 are equipped with screw rod 8 on the second fixing base 23, the baffle is fixed on screw rod 8, be equipped with a pair of adjusting nut 12 that keeps the baffle position on the screw rod 8, two adjusting nut 12 set up in the both sides of baffle 7, can adjust the position of baffle 7 according to the length of clamping piece. The baffle 7 is provided with a bearing core perforation 71 for the bearing core 1 to pass through, the side surface of the baffle 7 facing to the side of the second fixing seat 23 is a stop surface matched with the rear end surface of the clamping piece 4, the orifice of the bearing core perforation is positioned on the stop surface, when the bearing core 1 is retreated, if the clamping piece 4 is stuck with the bearing core 1, the clamping piece 4 can be stopped by the baffle when the bearing core 1 is retreated continuously, so that the clamping piece 4 falls off. The baffle in this embodiment constitutes a stopping structure for stopping the clip.
The distance between the baffle 7 and the second fixing seat 23 is larger than the length of the clamping piece 4, so that the clamping piece 4 can be completely separated from the tensile core fixing hole 21. In other embodiments, the distance between the baffle and the bearing seat can be smaller than the length of the clamping piece, but the distance between the baffle and the bearing seat is enough to separate the clamping piece from the hole wall of the fixing hole of the bearing core. Of course, in other embodiments, under the condition that the sealing effect is better and the protection effect of the protection cap is better, the protection cap does not need to be provided with a stop structure.
When the single-piece recovery type anchor rod is manufactured, the outer sleeve 5 is fixed on the connecting pipe 24 of the first fixing seat 22, the tensile core 1 passes through the outer sleeve 5, the connecting pipe 24 and the second fixing seat 23, the fixed end of the tensile core 1 passes through the tensile core fixing hole 21 on the second fixing seat 23, the clamping piece 4 is arranged in the tensile core fixing hole 21, then the force is exerted from the tensioning end of the tensile core 1, the fixed end of the tensile core 1 and the clamping piece 4 are pressed tightly, the fixed end is fixed, the tensile core 1 is kept in a tensioning state, then the axial pressure is exerted on the outer sleeve 5, the outer sleeve 5 is in a pre-compression state, the tensile end of the outer sleeve 5 and the tensile core 1 is fixed, at the moment, the tensile core 1 is in a pre-compression state, and the outer sleeve 5 is in a pre-compression state, and then the protective cap 3 is fixed on the second fixing seat 23.
When the single recyclable anchor rod is required to be used in field anchoring construction, a set value pulling force can be continuously applied to the tensioning end through a jack, and as the outer sleeve 5 is in a precompressed state, the outer sleeve 5 can adapt to the tiny change of the length of the tensile core 1, and one end of the outer sleeve 5 is fixed with the tensile core 1, and the other end of the outer sleeve 5 is fixed with the bearing seat.
When the tensile core 1 needs to be recovered, the fixation of the tensile end and the outer sleeve 5 is released, the compression sleeve 11 and the thermal shrinkage sleeve are removed, the tensile core 1 can relatively move in the outer sleeve 5, the tensile end is forced by hammering, the tensile core 1 moves towards the protective cap 3, after the tensile core 1 moves towards the protective cap 3, the clamping piece 4 is driven to move towards the protective cap 3, the clamping piece 4 is separated from the wall of the tensile core fixing hole 21 and is separated from the tensile core fixing hole 21, the fixation of the fixed end of the tensile core 1 is released, and the tensile core 1 is directly pulled out.
If the clamping piece 4 cannot be separated from the tensile core 1 due to corrosion, the baffle plate in the protective cap 3 is in stop fit with the clamping piece 4, so that the clamping piece 4 is separated from the tensile core 1, and then the tensile core 1 can be pulled out. If the clamping piece 4 and the carrying core 1 are corroded seriously, the carrying core 1 and the clamping piece 4 can be separated by rotating the carrying core 1, increasing hammering force and the like.
In the embodiment 2 of the single-bolt retractable bolt of the present invention, the single-bolt retractable bolt in this embodiment is different from the embodiment 1 described above only in that: the baffle plate matched with the hammer-shaped clamping piece is fixed on the protective cap. In other embodiments, the stop structure may also be a bar.
Embodiment 3 of the single-bolt retractable bolt of the present invention differs from embodiment 1 described above only in that: the outer sleeve is fixed through the staple bolt with the stretch-draw end of holding the core, and the pyrocondensation pipe cover is outside the staple bolt to improve sealed effect and fixed effect.
In the embodiment 4 of the single-bolt retractable bolt of the present invention, the single-bolt retractable bolt in this embodiment is different from the one in the above embodiment 1 only in that: the outer sleeve and the stretching end of the tensile core are fixed in a heat shrinkage mode. In other embodiments, the outer sleeve and the tensile end of the tensile core may be secured by means of bonding.
Embodiment 5 of the single-bolt retractable bolt of the present invention differs from embodiment 1 described above only in that: the first fixing seat is welded with a connector, and the outer sleeve is fixed on the connector.
Embodiment 6 of the single-bolt retractable bolt of the present invention, the single-bolt retractable bolt of the present embodiment differs from the one of embodiment 1 described above only in that: in this embodiment, no bag is provided, at this time, the bearing seat has no connecting tube, and the second fixing seat forms the bearing seat.
The above description is only a preferred embodiment of the present invention, and the patent protection scope of the present invention is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A single retractable anchor comprising:
one end of the bearing core is a fixed end, and the other end is a tensioning end;
the bearing seat is provided with a bearing core fixing hole for the bearing core to pass through;
the clamping piece is arranged in the bearing core fixing hole, the bearing core is wedged and fixed, and an isolation structure is arranged between the clamping piece and the wall of the bearing core fixing hole;
the protective cap is fixed on the bearing seat;
an outer sleeve for passing through the bearing core;
one end of the outer sleeve is fixedly sealed with the bearing seat, which is characterized in that,
the other end of the outer sleeve is fixedly sealed with the tensioning end of the bearing core, the bearing core is pre-tensioned through the outer sleeve, and the fixed end is pre-fixed on the bearing seat through the clamping piece;
a gap is formed between the outer sleeve and the tensile core, and the tensile end of the tensile core is fixed with the outer sleeve and enables the tensile core to move relative to the outer sleeve;
when the anchor rod is recovered, the clamping piece can be separated from the wall of the fixed hole of the bearing core by releasing the fixation of the outer sleeve and the tensioning end and applying an acting force to the bearing core.
2. A single recoverable anchor according to claim 1, wherein the outer sleeve is secured by compression of the compression sleeve to the tensile end of the tensile core or the outer sleeve is secured by the anchor ear to the tensile end of the tensile core.
3. The single-root retrievable bolt according to claim 2, wherein the outer sleeve is provided with a heat shrink tube at a fixed location to the tensioned end of the tensile core.
4. A single bolt according to any one of claims 1 to 3, wherein the outer sleeve is pre-compressed in the axial direction and then sealed fixedly to the tensile core.
5. A single bolt according to any one of claims 1 to 3, wherein a stop structure is provided in the cap, the stop structure being provided with a stop surface for engaging with the clip to disengage the clip from the tensile core when a force is applied to the tensile end of the tensile core to move the tensile core towards the cap, after the clip is disengaged from the wall of the tensile core retaining aperture.
6. The single-piece retrievable bolt of claim 5, wherein the stop structure is a baffle plate fixed to the carrier, the stop surface is formed by a side of the baffle plate facing the clip, and the fixed end of the tensile core extends to a side of the baffle plate facing away from the clip.
7. The single-piece retractable bolt of claim 5, wherein the stop structure is a baffle plate fixed on the bearing seat, a side surface of the baffle plate facing the clamping piece forms the stop surface, a bearing core through hole for the bearing core to pass through is arranged on the baffle plate, and an orifice of the bearing core through hole is positioned on the stop surface.
8. The single-piece retrievable bolt of claim 5, wherein the spacing between the stop surface and the carrier is greater than the length of the clip so that the stop surface engages the clip adhered to the tensile core after the clip is removed from the tensile core retaining aperture.
9. A single bolt according to any one of claims 1 to 3, wherein the bearing seat comprises a connector secured to the outer sleeve, the connector being provided with external screw threads, the outer sleeve being screwed onto the external screw threads and being secured to the connector after heat shrinkage.
10. A single-root retractable anchor according to any one of claims 1-3, wherein the single-root retractable anchor comprises a bag, the bearing seat comprises a first fixed seat, a second fixed seat and a connecting pipe, the connecting pipe connects the first fixed seat and the second fixed seat, two ends of the bag are respectively connected with the first fixed seat and the second fixed seat, the protective cap is fixed with the second fixed seat, a bearing core fixing hole is formed in the second fixed seat, and the bearing core is pre-fixed on the second fixed seat after passing through the first fixed seat and the connecting pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011040785.7A CN112127927B (en) | 2020-09-28 | 2020-09-28 | Single-recyclable anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011040785.7A CN112127927B (en) | 2020-09-28 | 2020-09-28 | Single-recyclable anchor rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112127927A CN112127927A (en) | 2020-12-25 |
| CN112127927B true CN112127927B (en) | 2023-07-25 |
Family
ID=73843434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011040785.7A Active CN112127927B (en) | 2020-09-28 | 2020-09-28 | Single-recyclable anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112127927B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542149A (en) * | 2022-04-27 | 2022-05-27 | 中国矿业大学 | Underground roadway rock burst prevention supporting anchor cable |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943474B (en) * | 2012-11-23 | 2015-05-06 | 中冶建筑研究总院有限公司 | Insertion combination type recyclable expanding body anchor rod of high-bearing inner cabin and construction method |
| CN107663858B (en) * | 2016-07-29 | 2023-07-14 | 上海宝冶集团有限公司 | Anchor cable capable of being unlocked and recycled and application method thereof |
| CN107152022B (en) * | 2017-07-17 | 2022-08-02 | 中冶沈勘工程技术有限公司 | Internal expansion type grouting-free recyclable anchor cable and construction method thereof |
| CN207244619U (en) * | 2017-08-14 | 2018-04-17 | 孟令忠 | A kind of recoverable prestressed anchor cable device of detachable |
| CN108951420A (en) * | 2018-08-16 | 2018-12-07 | 江苏法尔胜缆索有限公司 | Analysis of Suspension Bridges ' Anchorage hot extruded polyethylene steel wire finished guy cable pre-stress system |
| CN110965551A (en) * | 2019-12-26 | 2020-04-07 | 姚炳祥 | Recyclable center type anchor cable and use method thereof |
| CN213538957U (en) * | 2020-09-28 | 2021-06-25 | 赵津梁 | Single-recoverable anchor rod |
-
2020
- 2020-09-28 CN CN202011040785.7A patent/CN112127927B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112127927A (en) | 2020-12-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112127927B (en) | Single-recyclable anchor rod | |
| CN110397035B (en) | Recoverable anchor rope | |
| JP3694690B2 (en) | Wedge assembly for tension anchor removal type internal fixing body of ground anchor and internal fixing body using the same | |
| US5802788A (en) | Fixing device for tensioning member for prestressed concrete | |
| CN107152022B (en) | Internal expansion type grouting-free recyclable anchor cable and construction method thereof | |
| CN213538957U (en) | Single-recoverable anchor rod | |
| CN201554029U (en) | Energy-dissipating device used for steel wire stay rope | |
| JPH0913672A (en) | Frp tensional material, its fixing method and fixing tool | |
| CN211639740U (en) | Stud mounting tool | |
| US3714859A (en) | Energy absorbing structures | |
| WO2011050653A1 (en) | Anchor bolt for sheet material | |
| KR100377633B1 (en) | method and apparatus for removing a steel wire cable from an anchor for preventing side wall collapse | |
| CN210507437U (en) | Recoverable anchor cable | |
| WO2021054744A1 (en) | Press-fit nut for assembly, press-fit nut-bolt assembly, and method of constructing steel-concrete composite structure using same | |
| CN110977873B (en) | Stud bolt mounting tool and use method thereof | |
| KR101765536B1 (en) | Removal apparatus of tension material for ground anchor | |
| CN210459205U (en) | Anchor head structure and anchoring device | |
| JP4068982B2 (en) | Fixing structure and fixing forming method of fiber composite wire end, and fixing structure of fixed fiber composite wire | |
| CN209760831U (en) | Stay cable clamping device | |
| CN111485678A (en) | Connector for prestressed steel strand and use method | |
| CN217204057U (en) | Lock capable of preventing clamping piece from breaking off | |
| CN112628273A (en) | Anti-loosening mechanism | |
| KR200419243Y1 (en) | Removal anchor | |
| CN201269239Y (en) | Dismountable expansion type fixer | |
| CN217325346U (en) | Recovery type anchor rod |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |