CN115263394A - Recoverable multi-tray anchor rod device - Google Patents
Recoverable multi-tray anchor rod device Download PDFInfo
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- CN115263394A CN115263394A CN202211054770.5A CN202211054770A CN115263394A CN 115263394 A CN115263394 A CN 115263394A CN 202211054770 A CN202211054770 A CN 202211054770A CN 115263394 A CN115263394 A CN 115263394A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 238000010079 rubber tapping Methods 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 238000004873 anchoring Methods 0.000 claims description 38
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 26
- 230000000694 effects Effects 0.000 claims description 21
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 230000009471 action Effects 0.000 claims description 7
- 239000002689 soil Substances 0.000 description 21
- 238000010276 construction Methods 0.000 description 7
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Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
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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
- E02D17/20—Securing of slopes or inclines
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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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D21/0046—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts formed by a plurality of elements arranged longitudinally
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D21/008—Anchoring or tensioning means
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to a recoverable multi-tray anchor rod device, belonging to the technical field of anchor rod support of slope engineering; the self-tapping earth-entering anchor head, a support disc anchor rod outer sleeve with a support disc extending hole, a support disc anchor rod inner sleeve with a support disc array, a spring and an upper clamping piece and a lower clamping piece are included; after the anchor rod is buried, the steel bar anchor head is pulled out to drive the inner sleeve of the support disk anchor rod to move outwards, the support disk array is originally built at the edge of the support disk extending hole, and the support disk anchor rod inner sleeve and the support disk anchor rod outer sleeve can be slowly opened after relative movement; when the anchor rod is not used, the upper clamping piece and the lower clamping piece can be opened to enable the steel bar anchor head to automatically rebound, and meanwhile, the supporting disk array is driven to be accommodated in the supporting disk anchor rod outer sleeve, and at the moment, the anchor rod is extremely easy to pull out; compare in traditional stock anchor, this stock device has high permanent resistance, very easily the characteristics of retrieving, lets the reuse of stock become the reality, and the corresponding increase and decrease of degree that can be based on strutting of the inside and outside telescopic quantity of sectional supporting disk stock, application scope is wide.
Description
Technical Field
The invention relates to a recyclable multi-tray anchor rod device, and belongs to the technical field of side slope engineering anchor rod support.
Background
The soil body anchoring technology is characterized in that the self strength of the soil body is adjusted through the reinforcement effect of the anchor rod, so that the soil body becomes a part of an engineering structure, the area of the retaining structure is greatly reduced, the dead weight of the reinforcing structure is reduced, engineering materials are saved, and the effect of controlling the deformation of the soil body is remarkable. The bearing capacity of the anchor rod is mainly provided by the bonding friction resistance of the anchor body and the unstable slope body, but the friction resistance of partial soil body is very low, so that the requirement of design withdrawal resistance is often difficult to meet. The anchor rod with the supporting disc not only has the bonding friction resistance between the anchoring main body and the unstable slope body, but also can greatly increase the pulling resistance of the supporting disc; however, similar devices such as umbrella-shaped anchor rods and fishbone-shaped anchor rods in the prior art cannot be recovered after being driven into an underground slope or a mine tunnel to increase the anchoring force after being unfolded, so that the anchor rods can be utilized only once, and great waste is caused.
The construction procedure of traditional anchor bolt support includes that punching, transport anchoring agent, stirring anchoring agent, installation stock anchor rope, carry out stretch-draw pretension etc. to the stock, and the flow is loaded down with trivial details, and artifical degree of dependence is high. Therefore, the conventional anchor rod and anchor rod drill carriage is developed, the anchor rod drill carriage can realize automatic drilling and the supporting operation of anchor rods and anchor cables, and the efficiency of anchor rod supporting construction is improved to a certain extent. However, the movement fit accuracy of the jumbolter is low, and deformation is likely to occur during the working process. In addition, the traditional anchor rod limits the maximum stroke of the drilling machine, one-time construction operation of the full-length anchor rod is difficult to realize, and anchor rod support efficiency is low.
For example, chinese patent No. CN 106567384B discloses a fishbone-shaped anchor rod, when not in use, the blade is received on the anchor rod and is located in the sleeve tube; when the device is used, the rear end of the sleeve pipe is connected with an anchor rod machine, the anchor rod machine is started to rotate forwards, and the fishbone-shaped anchor rod is drilled into rock soil; applying pressure to the rear end of the anchor rod to push the propelling body in the anchor head forward, so that the anchor head prick is extruded out of the anchor head and embedded into the rock-soil body; then, the pressure at the rear end of the anchor rod is removed, and the anchor rod machine is started to rotate reversely until the sleeve pipe is separated from the anchor head; at the moment, the blades uniformly distributed on the anchor rod are in a preliminary opening state; the structure can not be retracted after being unfolded, and the utilization rate is low.
Disclosure of Invention
The invention aims to solve the problems and provides a recyclable multi-tray anchor rod device.
The invention aims to realize the following technical scheme that the recyclable multi-tray anchor rod device comprises a self-tapping buried anchor head, a first telescopic structure and N tray anchor rod units, wherein N is more than or equal to 1, a second telescopic structure, a pedestal, a base plate, a reinforcing steel bar anchor head and a fixing device; the N supporting disk anchor rod units are sequentially connected end to form a supporting disk anchor rod structure, a first telescopic structure and a second telescopic structure are respectively connected into two ends of the supporting disk anchor rod structure to form an anchoring section, one end of the anchoring section is connected with a self-tapping soil-entering anchor head, and the other end of the anchoring section is connected with a pedestal; one end of the steel bar anchor head sequentially penetrates through the base plate and the pedestal and is connected with the second telescopic structure; after the anchor rod device buries, outwards pull out the reinforcing bar anchor head, under the tensile effect of first extending structure and second extending structure and under the self tapping anchor head anchoring effect that buries, each support plate anchor rod unit opens slowly, and at this moment, fixing device is used for fixed reinforcing bar anchor head, and the anchor rod device plays the anchor effect, after the anchor rod device uses, loosens fixing device, and the reinforcing bar anchor head is inwards withdrawed under first extending structure's effect, makes each support plate anchor rod unit draw in.
Preferably, the tray anchor unit comprises a tray anchor outer sleeve and a tray anchor inner sleeve; n supporting discs are circumferentially hinged to the outer surface of the inner sleeve of the supporting disc anchor rod, and N is more than or equal to 1; the support disc anchor rod outer sleeve is provided with a support disc extending hole corresponding to the support disc, the support disc anchor rod inner sleeve is positioned in the support disc anchor rod outer sleeve, and when the support disc anchor rod unit is in a folded state, the tail end of the support disc is lapped at the edge of the support disc extending hole; when the branch disc anchor rod unit is opened slowly, the tail end of the branch disc extends out of the branch disc extending hole.
When the supporting disc anchor rod unit is in a furled state, the first spring is in a natural state, the tail end of the supporting disc can be lapped at the edge of the supporting disc extending hole, and when the supporting disc anchor rod inner sleeve and the supporting disc anchor rod outer sleeve generate relative displacement, the supporting disc extending hole prevents the supporting disc array which increases the anchoring force from being static relative to the supporting disc anchor rod inner sleeve, so that the anchored supporting disc array can be slowly inserted into a drawing to play anchoring efficiency, and furled of the supporting disc array is realized.
Preferably, the outer surface of the inner sleeve of the supporting disk anchor rod is circumferentially provided with a supporting disk hinge seat, and N is more than or equal to 1; the supporting disc hinge seat is provided with a concave groove, a connecting shaft is arranged in the concave groove in a rotating mode and connected with the supporting disc, and the supporting disc can rotate in the concave groove.
Preferably, both sides of the concave groove are provided with through holes, both ends of the connecting shaft are respectively provided with an internal threaded hole, and both ends of the connecting shaft are respectively arranged in the through holes and internally threaded holes are internally provided with connecting bolts, so that the connecting shaft rotates in the through holes.
When a branch dish stock inner skleeve and a branch dish stock outer skleeve produced relative displacement, the effect of a branch dish in the connecting axle of rotating the connection and a branch dish extension hole down, contained angle between a branch dish and a branch dish stock inner sleeve pipe changes and realizes launching and drawing in to make things convenient for the stock device whole to extract, in order to treat the secondary.
Preferably, the section of the outer sleeve of the supporting disk anchor rod is of a circular structure; the section of the inner sleeve of the supporting disk anchor rod is of a regular polygon structure.
The inner sleeve and the outer sleeve of the supporting disc anchor rod of the anchor rod device are in a small section form, so that the length of the anchor rod can be adjusted conveniently along with different depths of unstability slopes to be driven and different required anchoring forces, and whether an inner sleeve which is not connected with the supporting disc is added at the tail end is determined, so that the inner sleeve is distinguished from a free section and an anchoring section, and the inner sleeve becomes the anchor rod; or all inner sleeves with branch disc arrays to form soil nails; the structure of the supporting disk anchor rod inner sleeve is optimally a regular polygon structure, and the supporting disk hinging seat is conveniently fixed.
Preferably, both ends of the outer sleeve of the supporting disk anchor rod are provided with threads, and the outer sleeves of the supporting disk anchor rods are connected through the threads; the two ends of the inner sleeve of the branch anchor rod are provided with threads, and the inner sleeves of the branch anchor rods are connected through the threads.
Preferably, the first telescopic structure comprises a first outer sleeve, a first inner sleeve and a first spring; the first outer sleeve and the first inner sleeve are both of a hollow structure, the first spring is positioned in the first inner sleeve, one end of the first spring is connected with the self-tapping and soil-entering anchor head, and the other end of the first spring is connected with the inner sleeve of the supporting disc anchor rod; first inner skleeve slides and sets up in first outer skleeve, self tapping anchor head that buries is connected to first inner skleeve one end, and first inner skleeve other end periphery is equipped with first fixture block, the inside first bayonet socket that is equipped with of first outer skleeve one end, a set stock inner skleeve is connected to the first outer skleeve other end.
Preferably, the second telescopic structure comprises a second outer sleeve and a second inner sleeve; the second outer sleeve and the second inner sleeve are both hollow structures; the second inner sleeve slides and is arranged in the second outer sleeve, a second clamping block is arranged on the periphery of one end of the second inner sleeve, the other end of the second inner sleeve is connected with the steel bar anchor head, one end of the second outer sleeve is connected with the supporting disc anchor rod inner sleeve, and a second bayonet is arranged in the other end of the second outer sleeve.
The expansion of the supporting disk anchor rod unit can be realized under the stretching action of the first spring, the supporting disk of the supporting disk anchor rod unit is realized under the rebounding action of the first spring and is folded, and the tail end of the supporting disk is lapped at the edge of the supporting disk extending hole when the supporting disk is folded, the first inner sleeve and the first outer sleeve are used for connecting the first section supporting disk anchor rod inner sleeve at the left end with the self-tapping soil-entering anchor head, the left end is prevented from deforming downwards and avoiding generating fluctuation from top to bottom, the second inner sleeve and the outer sleeve are used for connecting the supporting disk anchor rod inner sleeve at the left end with the reinforcing steel bar anchor head, and the right end is prevented from deforming downwards and avoiding generating fluctuation from top to bottom. The matching of the bayonet and the clamping block ensures that the maximum extension length is formed between the inner sleeve and the outer sleeve and the inner sleeve and the outer sleeve cannot be separated from the inner sleeve and the outer sleeve, the inner sleeve and the outer sleeve as well as the bayonet and the clamping block are of hollow structures, and the spring can penetrate through a mechanism formed by the inner sleeve and the outer sleeve.
Preferably, the steel bar anchor head is of a threaded structure, the fixing device comprises an upper clamping piece and a lower clamping piece, a semi-arc-shaped upper clamping hole is formed in the lower end of the upper clamping piece, a semi-arc-shaped lower clamping hole is formed in the upper end of the lower clamping piece, a clamping hole is formed by the upper clamping hole and the lower clamping hole, and the diameter of the clamping hole is equal to the small diameter of the steel bar anchor head; the upper clamping piece and the lower clamping piece are both provided with clamping piece threaded connection holes, and the base plate and the pedestal are both provided with threaded connection holes corresponding to the clamping piece threaded connection holes.
After the anchor rod device enters the soil body, the outer sleeve of the support disk anchor rod is relatively static with the soil body, the reinforcing steel bar anchor head is slowly pulled out, at the moment, the inner sleeve of the support disk anchor rod connected with the reinforcing steel bar anchor head also slowly moves outwards, and the blocking effect of the support disk extending hole can rotate along the through hole of the concave groove, namely the support disk is slowly opened; after the reinforcing steel bar anchor head is pulled to realize that the inner sleeve of the anchor rod of the supporting disc moves outwards, the reinforcing steel bar anchor head is fixed by the upper clamping piece and the lower clamping piece, the base plate and the pedestal through the connecting bolts. When the anchor rod needs to be withdrawn after the construction of the unstable slope or the tunnel is finished, only the upper clamping piece and the lower clamping piece need to be loosened, and due to the effects of the anchoring end and the free end spring, the steel bar anchor head and the inner sleeve of the supporting disc anchor rod can automatically rebound and reset, and the supporting disc array can be withdrawn. At this moment, the anchoring force of the anchor rod is almost lost, and because the outer sleeve of the anchor rod is smooth, the adhesive resistance can be hardly generated between the outer sleeve of the anchor rod and a contacted soil body, so that the anchor rod can be easily pulled out to be used for the second time.
The invention has the following beneficial effects: 1) The invention greatly enhances the anchoring force. Traditional stock only relies on the unevenness on stock surface and the ground body to produce mechanical interlock or viscous force, and the anchoring effect that its provided is very limited, but this stock that has a spider array owing to open the spider after the stock is arranged and is finished, and the spider pierces the soil body like the barb is the same deeply, increases the anchor effect of stock, and the anchor power with traditional stock can not be in the same day.
2) The invention relates to the recyclability and recycling characteristics of the anchor rod device. After most of the traditional anchor rods or various original anchor rods with new forms are driven into a slope body, the anchor rods are permanently left in the slope body once after the operation on the slope body is finished, and large material and economic waste is caused.
3) The anchor rod device is designed to be connected in a small section mode, the length of the anchor rod anchoring section can be adjusted according to local conditions, the assembly and disassembly are very simple, and if the anchor rod device is used in complex construction environments such as field and the like, the anchor rod can be transported to an operation place in a sub-position mode and then assembled, so that the anchor rod device is very convenient and fast; the anchor rod is distinguished by the anchoring section and the free section, and the anchoring section is a soil nail, so that the application range is wide.
4) The anchor rod is different from the traditional anchor rod, so that a plurality of construction processes are omitted, the anchor rod only needs to be drilled into a soil body, and then the supporting disc is folded and unfolded by enabling the inner sleeve and the outer sleeve of the supporting disc anchor rod to displace, so that a simple anchor rod drilling machine system can be configured, the dismounting, the mounting and the using are very convenient and fast, and the construction efficiency is greatly improved.
5) The device of the invention has wide application, the anchor rod has various shape changes, is suitable for geotechnical support, underground engineering, tunnel engineering, sea wall anchoring engineering and the like, and has wide application prospect. The anchoring force of the anchor rod is reliable in grading, easy to adjust and supplement and easy to recover and reuse; the creep resistance is strong, the anchoring effect is not influenced by gaps in rock and soil mass, and the anchor rod has high integral strength and is wear-resistant.
Drawings
Fig. 1 is an expanded sectional view of a headboard of the anchor device of the present invention.
Fig. 2 is an undeployed cross-sectional view of the headboard of the anchor device of the present invention.
Fig. 3 is a schematic view of the inner sleeve of the anchor rod with the tray being pulled out.
Fig. 4 is a developed structure view of the supporting disk on the inner sleeve of the supporting disk anchor rod.
Fig. 5 is a drawing showing the retracting and connecting structure of the inner casing of the branch anchor rod.
Fig. 6 is a schematic view of the hinge structure of the branch tray of the present invention.
FIG. 7 is a view showing a structure of a connecting shaft in the present invention.
Fig. 8 is an internal view of the tray anchor unit of the present invention.
Fig. 9 is an internal view of the present invention with a mounting bracket disposed within the headboard anchor unit.
Fig. 10 is a structural view of a mounting bracket of the present invention.
Fig. 11 is a structural view of a first telescopic structure in the present invention.
Fig. 12 is a structural view of a second telescopic structure in the present invention.
Fig. 13 is a schematic view of the connection of the anchor head of the reinforcing bar according to the present invention.
FIG. 14 is a view showing the structure of a fixing device according to one embodiment of the present invention.
Fig. 15 is a diagram of the arrangement of the measuring points of the anchor rod device working mechanics sensor and the analysis of the stress.
In the figure: the self-tapping soil-entering anchor head, the first telescopic structure 2, the first outer sleeve 2-1, the first inner sleeve 2-2, the first clamping block 2-2-1, the first spring 2-3, the anchor rod unit 3-tray, the anchor rod outer sleeve 3-1, the anchor rod inner sleeve 3-2, the second telescopic structure 4, the second outer sleeve 4-1, the second inner sleeve 4-2, the second clamping block 4-2-1, the pedestal 5, the backing plate 6, the steel bar anchor head 7, the anchor rod 8, the anchor plate 9, the anchor plate extension hole 10, the anchor plate hinge seat 11, the connecting shaft 11, the internal thread hole 11-1, the connecting bolt 12, the mounting bracket 13, the outer bracket ring 13-1, the inner bracket ring 13-2, the support rod 13-3, the upper clamping piece 14, the lower clamping piece 15 and the clamping piece thread connection hole 16.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in fig. 1-14, a recoverable multi-tray anchor rod device comprises a self-tapping soil-entering anchor head 1, a first telescopic structure 2, N tray anchor rod units 3, N is more than or equal to 1, a second telescopic structure 4, a pedestal 5, a backing plate 6, a steel bar anchor head 7 and a fixing device; the N supporting disk anchor rod units 3 are sequentially connected end to form a supporting disk anchor rod structure, a first telescopic structure 2 and a second telescopic structure 4 are respectively connected into two ends of the supporting disk anchor rod structure to form an anchoring section, one end of the anchoring section is connected with a self-tapping soil-entering anchor head 1, and the other end of the anchoring section is connected with a pedestal 5; one end of the steel bar anchor head 7 sequentially penetrates through the base plate 6 and the pedestal 5 and is connected with the second telescopic structure 4; after the anchor rod device buries, outwards pull out reinforcing bar anchor head 7, under the tensile effect of first extending structure 2 and self tapping anchor head 1 anchoring effect that buries, each support plate anchor rod unit opens slowly, and at this moment, fixing device is used for fixed reinforcing bar anchor head 7, and the anchor rod device plays the anchor effect, after the anchor rod device uses, loosens fixing device, and reinforcing bar anchor head 7 inwards withdraws under first extending structure 2 and second extending structure 4's effect, makes each support plate anchor rod unit draw in.
Example 1
The supporting disc anchor rod unit 3 comprises a supporting disc anchor rod outer sleeve 3-1 and a supporting disc anchor rod inner sleeve 3-2; the section of the outer support disc anchor rod sleeve 3-1 is a circular structure, the section of the inner support disc anchor rod sleeve 3-2 is a regular polygon structure, 4 support disc extending holes 9 are uniformly arranged on the upper, lower, left and right sides of the circumference of the outer support disc anchor rod sleeve 3-1, the 4 support disc extending holes are symmetrically distributed in pairs, the inner support disc anchor rod sleeve 3-2 is positioned in the outer support disc anchor rod sleeve 3-1, the support disc 8 penetrates through the support disc extending holes 9 to be hinged with the outer surface of the inner support disc anchor rod sleeve 3-2, and the angle between the support disc 8 and the inner support disc anchor rod sleeve 3-2 can be adjusted through hinging; both ends of the outer support disk anchor rod sleeve 3-1 are provided with threads, the outer support disk anchor rod sleeves are connected through the threads, both ends of the inner support disk anchor rod sleeve 3-2 are provided with threads, the inner support disk anchor rod sleeves are connected through the threads, and the support disk anchor rod units are connected in a small section form; before the inner sleeve of the support disc anchor rod and the outer sleeve of the support disc anchor rod do not have relative displacement, when the support disc anchor rod unit 3 is in a folded state, the tail end of the support disc 8 is lapped at the edge of the support disc extending hole 9; when the supporting disk anchor rod unit 3 is opened slowly, the end of the supporting disk 8 is extended from the supporting disk extension hole 9.
The N supporting disc anchor rod units 3 are connected end to form a supporting disc anchor rod structure, a supporting disc anchor rod inner sleeve on the left side of the supporting disc anchor rod structure is connected with a first telescopic structure 2, a supporting disc anchor rod outer sleeve on the left side of the supporting disc anchor rod structure is in threaded connection with a self-tapping buried anchor head 1, and the self-tapping buried anchor head is a quincunx notch anchor head; a supporting disc anchor rod inner sleeve on the right side of the supporting disc anchor rod structure is connected with the second telescopic structure 4, and a supporting disc anchor rod outer sleeve on the right side of the supporting disc anchor rod structure is in threaded connection with the pedestal; the left end of the steel bar anchor head 7 sequentially penetrates through the backing plate 6 and the pedestal 5 and is connected with the second inner sleeve 4-2 of the second telescopic structure 4.
When the self-tapping soil-entering anchor head 1 on the left side is connected with a first spring 2-3 and a first inner sleeve 2-2 respectively, then a first section of supporting disc anchor rod outer sleeve is connected with the self-tapping soil-entering anchor head 1, a first section of supporting disc anchor rod inner sleeve is connected with the first spring 2-3 and the first outer sleeve 2-1 respectively in the first section of supporting disc anchor rod outer sleeve, a supporting disc 8 extends into the supporting disc extending hole 9 and is hinged with the first section of supporting disc anchor rod inner sleeve, then a second section of supporting disc anchor rod outer sleeve is connected with the first section of supporting disc anchor rod inner sleeve, at the moment, the right end of the first telescopic structure connected with the first section of supporting disc anchor rod inner sleeve is in a suspended state and has no supporting force, when the number of sections of the connected supporting disc anchor rod inner sleeves is large, the left end can not be supported, a mounting bracket 13 can be arranged in the supporting disc anchor rod, an outer bracket ring 13-1 of the mounting bracket 13 and an inner bracket ring 13-2 are in the same circle center and are connected through N 'X' -shaped supporting rods, the outer diameter of the inner sleeve of the supporting disc anchor rod 13-1 is equal to the outer diameter of the supporting disc anchor rod inner sleeve 13-2 of the supporting disc anchor rod inner bracket 13-2; the inner support ring 13-2 can support the left end of the inner sleeve of the branch disc anchor rod, so that the inner sleeve of the branch disc anchor rod cannot be mechanically bent under the action of gravity, the flow of the branch disc is repeatedly installed, and the installation support is taken out when the next branch disc anchor rod unit is installed. So to subsequent inner and outer sleeve of supporting disk stock and supporting disk install can, until the equipment of anchor section stock finishes.
The first telescopic structure 2 comprises a first outer sleeve 2-1, a first inner sleeve 2-2 and a first spring 2-3; the first outer sleeve 2-1 and the first inner sleeve 2-2 are both of a hollow structure, the first spring 2-3 is arranged in the first inner sleeve 2-2, the first spring 2-3 is not in contact with the first inner sleeve 2-2 and the first outer sleeve 2-1, stretching can be achieved, one end of the first spring 2-3 is in threaded connection with the self-tapping soil-entering anchor head 1, and the other end of the first spring 2-3 is in threaded connection with the inner sleeve of the support disc anchor rod on the left side; the first inner sleeve 2-2 is arranged in the first outer sleeve 2-1 in a sliding mode, a lubricating layer is uniformly coated between the first inner sleeve 2-2 and the first outer sleeve 2-1, one end of the first inner sleeve 2-2 is in threaded connection with the self-tapping soil-penetrating anchor head 1, a first clamping block 2-2-1 is arranged on the periphery of the other end of the first inner sleeve 2-2 and located in the first outer sleeve 2-1, a first clamping opening is formed in one end of the first outer sleeve 2-1, when the first inner sleeve 2-2 and the first outer sleeve 2-1 are located relatively, the first clamping opening is matched with the first clamping block 2-2-1, the first inner sleeve is prevented from being separated from the first outer sleeve, the maximum displacement of the first inner sleeve 2-2 and the first outer sleeve 2-1 is limited, and the other end of the first outer sleeve 2-1 is in threaded connection with the inner sleeve of the left tray-supporting anchor rod.
The second telescopic structure 4 comprises a second outer sleeve 4-1 and a second inner sleeve 4-2; the second outer sleeve 4-1 and the second inner sleeve 4-2 are both hollow structures; the second inner sleeve 4-2 is arranged in the second outer sleeve 4-1 in a sliding mode, a lubricating layer is evenly coated between the second inner sleeve 4-2 and the second outer sleeve 4-1, a second clamping block 4-2-1 is arranged on the periphery of one end of the second inner sleeve 4-2 and located in the second outer sleeve, the other end of the second inner sleeve 4-2 is connected with a steel bar anchor head 7, one end of the second outer sleeve 4-1 is connected with the right supporting disc anchor rod inner sleeve, a second bayonet is arranged in the other end of the second outer sleeve 4-1 and matched with the second clamping block 4-2-1, the second inner sleeve is prevented from being separated from the second outer sleeve, and the maximum displacement of the second inner sleeve and the second outer sleeve is limited.
The steel bar anchor head 7 is a thread structure, the fixing device comprises an upper clamping piece and a lower clamping piece, the lower end of the upper clamping piece is provided with two semi-arc-shaped upper clamping holes, one of which has a large diameter and a small diameter, the upper end of the lower clamping piece is correspondingly provided with two semi-arc-shaped lower clamping holes, the upper clamping hole and the lower clamping hole respectively form a clamping hole with a large diameter and a clamping hole with a small diameter, the clamping hole with the large diameter is equivalent to the maximum diameter of the steel bar anchor head thread structure, the clamping hole with the small diameter is equivalent to the minimum outer diameter of the steel bar anchor head thread structure, the upper clamping piece and the lower clamping piece are both provided with clamping piece thread connecting holes, the backing plate and the pedestal are both provided with thread connecting holes corresponding to the clamping piece thread connecting holes, when the steel bar anchor head is pulled outwards, the upper clamping piece and the lower clamping piece are matched, the formed clamping holes with the small diameter clamp the place with the small diameter of the steel bar anchor head, the formed clamping holes with the large diameter clamp piece, the thread connecting holes sequentially penetrate through the clamping pieces, the thread connecting holes of the backing plate and the thread connecting holes of the pedestal, so that the steel bar anchor head cannot retract inwards due to fix the anchor head, and the anchor plate unit to realize the anchor plate anchoring effect.
Example 2
The supporting disc anchor rod unit 3 comprises a supporting disc anchor rod outer sleeve 3-1 and a supporting disc anchor rod inner sleeve 3-2; the section of the support disc anchor rod outer sleeve 3-1 is a circular structure, the section of the support disc anchor rod inner sleeve 3-2 is a regular hexagon structure, 4 support disc hinge seats 10 are uniformly arranged on the upper, lower, left and right sides of the outer surface of the support disc anchor rod inner sleeve 3-2 in the circumferential direction, a concave groove is formed in each support disc hinge seat 10, through holes are formed in each side of the concave groove, a small steel plate is welded to the upper portion of each concave groove to serve as a maximum value limiting device of the support disc opening angle, 4 support disc extending holes 9 are formed in the support disc anchor rod outer sleeve 3-1 in the circumferential direction and correspond to the 4 support disc hinge seats 10, the support disc anchor rod inner sleeve 3-2 is located in the support disc anchor rod outer sleeve 3-1, a connecting shaft 11 is arranged at one end of a support disc 8 and penetrates through the support disc extending holes 9, internal thread holes 11-1 are formed in each end of the connecting shaft 11, each end of the connecting shaft 11 is respectively installed in each through hole, a connecting bolt 12 is arranged in each internal thread hole 11-1, the through which enables the support disc anchor rod 11 to rotate in each through hole, and the support disc anchor rod 8 is hinged to adjust the angle between the support disc anchor rod inner sleeve 3-2; threads are arranged at two ends of the support disc anchor rod outer sleeve 3-1, the support disc anchor rod outer sleeves are connected through the threads, threads are arranged at two ends of the support disc anchor rod inner sleeve 3-2, the support disc anchor rod inner sleeves are connected through the threads, and the support disc anchor rod units are connected in a small joint mode; before the inner sleeve of the support disc anchor rod and the outer sleeve of the support disc anchor rod do not have relative displacement, when the support disc anchor rod unit 3 is in a folded state, the tail end of the support disc 8 is lapped at the edge of the support disc extending hole 9; when the supporting disk anchor rod unit 3 is opened slowly, the end of the supporting disk 8 is extended from the supporting disk extension hole 9.
When the self-tapping soil-entering anchor head 1 on the left side is connected with a first spring 2-3 and a first inner sleeve 2-2 respectively, then a first section of supporting disc anchor rod outer sleeve is connected with the self-tapping soil-entering anchor head 1, a first section of supporting disc anchor rod inner sleeve is connected with the first spring 2-3 and the first outer sleeve 2-1 respectively in the first section of supporting disc anchor rod outer sleeve, a supporting disc 8 extends into the supporting disc extending hole 9 and is hinged with the first section of supporting disc anchor rod inner sleeve, then a second section of supporting disc anchor rod outer sleeve is connected with the first section of supporting disc anchor rod inner sleeve, at the moment, the right end of the first telescopic structure connected with the first section of supporting disc anchor rod inner sleeve is in a suspended state and has no supporting force, when the number of sections of the connected supporting disc anchor rod inner sleeves is large, the left end can not be supported, a mounting bracket 13 can be arranged in the supporting disc anchor rod, an outer bracket ring 13-1 of the mounting bracket 13 and an inner bracket ring 13-2 are in the same circle center and are connected through N 'X' -shaped supporting rods, the outer diameter of the inner sleeve of the supporting disc anchor rod 13-1 is equal to the outer diameter of the supporting disc anchor rod inner sleeve 13-2 of the supporting disc anchor rod inner bracket 13-2; the inner support ring 13-2 can support the left end of the inner sleeve of the branch disc anchor rod, so that the inner sleeve of the branch disc anchor rod cannot be mechanically bent under the action of gravity, the flow of the branch disc is repeatedly installed, and the installation support is taken out when the next branch disc anchor rod unit is installed. So to subsequent inner and outer sleeve of supporting disk stock and supporting disk install can, until the equipment of anchor section stock finishes.
The N supporting disc anchor rod units 3 are connected end to form a supporting disc anchor rod structure, a supporting disc anchor rod inner sleeve on the left side of the supporting disc anchor rod structure is connected with a first telescopic structure 2, a supporting disc anchor rod outer sleeve on the left side of the supporting disc anchor rod structure is in threaded connection with a self-tapping embedded anchor head 1, and the self-tapping embedded anchor head is a quincunx-shaped notched anchor head; a supporting disc anchor rod inner sleeve on the right side of the supporting disc anchor rod structure is connected with the second telescopic structure 4, and a supporting disc anchor rod outer sleeve on the right side of the supporting disc anchor rod structure is in threaded connection with the pedestal; the left end of the steel bar anchor head 7 sequentially penetrates through the backing plate 6 and the pedestal 5 and is connected with the second inner sleeve 4-2 of the second telescopic structure 4.
The first telescopic structure 2 comprises a first outer sleeve 2-1, a first inner sleeve 2-2 and a first spring 2-3; the first outer sleeve 2-1 and the first inner sleeve 2-2 are both of a hollow structure, the first spring 2-3 is arranged in the first inner sleeve 2-2, the first spring 2-3 is not in contact with the first inner sleeve 2-2 and the first outer sleeve 2-1, stretching can be achieved, one end of the first spring 2-3 is in threaded connection with the self-tapping soil-entering anchor head 1, and the other end of the first spring 2-3 is in threaded connection with the inner sleeve of the support disc anchor rod on the left side; the first inner sleeve 2-2 is arranged in the first outer sleeve 2-1 in a sliding mode, a lubricating layer is uniformly coated between the first inner sleeve 2-2 and the first outer sleeve 2-1, one end of the first inner sleeve 2-2 is in threaded connection with the self-tapping embedded anchor head 1, a first clamping block 2-2-1 is arranged on the periphery of the other end of the first inner sleeve 2-2 and located in the first outer sleeve 2-1, a first clamping opening is formed in one end of the first outer sleeve 2-1, when the first inner sleeve 2-2 and the first outer sleeve 2-1 are located relatively, the first clamping opening is matched with the first clamping block 2-2-1, the maximum extension length between the first inner sleeve and the first outer sleeve is guaranteed, the first inner sleeve and the first outer sleeve cannot be separated, and the other end of the first outer sleeve 2-1 is in threaded connection with the inner sleeve of the left tray-supporting anchor rod.
The second telescopic structure 4 comprises a second outer sleeve 4-1, a second inner sleeve 4-2 and a second spring 4-3; the second outer sleeve 4-1 and the second inner sleeve 4-2 are both hollow structures; the second inner sleeve 4-2 is arranged in the second outer sleeve 4-1 in a sliding mode, a lubricating layer is evenly coated between the second inner sleeve 4-2 and the second outer sleeve 4-1, a second clamping block 4-2-1 is arranged on the periphery of one end of the second inner sleeve 4-2 and located in the second outer sleeve, the other end of the second inner sleeve 4-2 is connected with a steel bar anchor head 7, one end of the second outer sleeve 4-1 is connected with the right supporting disc anchor rod inner sleeve, a second bayonet is arranged inside the other end of the second outer sleeve 4-1 and matched with the second clamping block 4-2-1, and the maximum extension length between the second outer sleeve and the second inner sleeve is guaranteed, and the second inner sleeve and the second outer sleeve cannot be separated.
Lubricating oil should be scribbled on interior outer sleeve connection surface, guarantees on the one hand that its contact surface can not rust, and on the other hand guarantees that the card does not appear when its extension and shorten from causing the inside mechanical damage of stock.
Reinforcing bar anchor head 7 is helicitic texture, fixing device includes clamping piece 14, lower clamping piece 15, it is equipped with the semi-arc and presss from both sides the hole on the clamping piece 14 lower extreme, clamping piece 15 upper end is equipped with the semi-arc and presss from both sides the hole down, it forms with lower clamp hole and presss from both sides the hole to go up to press from both sides the hole, the diameter that presss from both sides the hole is equivalent with the minimum external diameter of reinforcing bar anchor head helicitic texture, it all is equipped with clamping piece threaded connection hole 16 with lower clamping piece 14 to go up clamping piece 14, backing plate 5 all is equipped with the threaded connection hole corresponding with clamping piece threaded connection hole 16 with pedestal 6, when reinforcing bar anchor head outwards extracts, go up the clamping piece and the cooperation of lower clamping piece, and use connecting thread to pass clamping piece threaded connection hole in proper order, the threaded connection hole of backing plate, the threaded connection hole of pedestal is fixed, make reinforcing bar anchor head can not inwards retract because of the resilience force of first spring, thereby fix reinforcing bar anchor head, the dish stock unit expandes and realizes the anchor effect.
The inner sleeve and the outer sleeve of the supporting disk anchor rod of the anchor rod device are in a small joint form, so that the length of the anchor rod can be adjusted conveniently along with different depths of unstable slopes to be driven and different anchoring forces, and whether an inner sleeve which is not connected with the supporting disk is added at the tail end or not is determined, so that the inner sleeve is distinguished by a free section and an anchoring section, and the inner sleeve becomes the anchor rod; or all inner sleeves with the support disk array are used as soil nails.
The working principle is as follows: firstly, a self-tapping and soil-entering anchor head 1 is respectively in threaded connection with a first spring 2-3 and a first inner sleeve of a first telescopic structure 2, and the first spring 2-3 is positioned in the first inner sleeve 2-2; one end of the outer sleeve of the first section of branch disc anchor rod is in threaded connection with the self-tapping and soil-entering anchor head 1, and the first telescopic structure 2 is positioned in the outer sleeve of the first section of branch disc anchor rod;
then, mounting the supporting disc hinge seats 10 on the upper, lower, left and right sides of the periphery of the first section of supporting disc anchor rod inner sleeve, placing the first section of supporting disc anchor rod inner sleeve in the first section of supporting disc anchor rod outer sleeve, and respectively connecting one end of the first section of supporting disc anchor rod inner sleeve with the right end of the first spring 2-3 of the first telescopic structure 2 and the right end of the first outer sleeve in a threaded manner; one end of the support disc 8 is provided with a connecting shaft 11, one end of the support disc, which is provided with the connecting shaft, extends into a support disc extending hole 9, two ends of the connecting shaft are respectively installed in through holes on two sides of a concave groove of a support disc connecting seat, an inner sleeve of a first section of support disc anchor rod is pulled outwards, connecting bolts 12 are respectively screwed at two ends of the connecting shaft, the inner sleeve of the first section of support disc anchor rod is loosened, and the tail end of the support disc is positioned at the edge of the support disc extending hole due to the rebounding natural state of a first spring;
then, a second section of supporting disc anchor rod outer sleeve is connected to the right end of a first section of supporting disc anchor rod outer sleeve through threads, the steps are repeated to install a second supporting disc anchor rod inner sleeve and a supporting disc, a plurality of sections of supporting disc anchor rod units are sequentially installed according to requirements, at the moment, a first telescopic structure 2 connected with a self-tapping soil-entering anchor head 1 and the right end of the supporting disc anchor rod inner sleeve are in a suspended state, in order to prevent deformation, an installation support 13 is placed in the supporting disc anchor rod outer sleeve, an outer support ring 13-1 of the installation support 13 is concentric with an inner support ring 13-2 and is connected through N X-shaped support rods, the outer diameter of the outer support ring 13-1 is equal to the inner diameter of the supporting disc anchor rod outer sleeve, and the inner diameter of the inner support ring 13-2 is equal to the outer diameter of the supporting disc anchor rod inner sleeve; the inner support ring 13-2 can support the left end of the inner sleeve of the supporting disc anchor rod, so that the inner sleeve of the supporting disc anchor rod cannot be mechanically bent under the action of gravity, the supporting disc installation process is repeated, and the installation support is taken out when the next section of supporting disc anchor rod unit is installed; the mounting bracket 13 plays an auxiliary role in the mounting process of the supporting disc anchor rod unit, the supporting disc anchor rod unit is repeatedly mounted according to the anchoring force requirement, when the supporting disc anchor rod unit is mounted to the inner sleeve of the last section of supporting disc anchor rod, the left end of the inner sleeve of the last section of supporting disc anchor rod is in threaded connection with a second outer sleeve of a second telescopic structure, and the outer sleeve of the last section of supporting disc anchor rod is connected with the left side of the pedestal;
then, one end of the steel bar anchor head sequentially penetrates through the base plate and the pedestal and is connected with the right end of the second inner sleeve;
when the anchor rod device is not in the ground, the tail end of the support disc is lapped at the edge of the support disc extending hole, and the support disc array cannot extend out of the support disc extending hole when the anchor rod device is driven into a rock-soil body; after the anchor rod drills into the soil body, the outer sleeve of the support disk anchor rod is static relative to the soil body, the steel bar anchor head is pulled out slowly, at the moment, the inner sleeve of the support disk anchor rod moves outwards slowly, and the support disk array can rotate along the through hole of the support disk hinged seat due to the blocking effect of the support disk extending hole, namely the support disk array opens slowly; due to the influence of the size of the hole, the opening angle of the supporting disk array has a threshold value, and the anchoring effect of the anchor rod is the maximum at the moment; clamping the steel bar anchor head by using the upper clamping piece and the lower clamping piece, and fixing the steel bar anchor head with the base plate and the pedestal by using the connecting threads to finish the anchoring work; when anchoring is finished, the connecting bolt is unscrewed, the upper clamping plate and the lower clamping plate are removed, the steel bar anchor head moves inwards under the action of the first spring and the second spring, and at the moment, the supporting disc array retracts from the supporting disc extending hole.
Monitoring is carried out at the measuring point of the mechanical sensor at the free end at the beginning of the anchor rod being driven into the soil body.
The stress situation when the anchor rod enters the soil body for anchoring is simply deduced according to the graph of fig. 15:
for an anchored slope or mine tunnel, when the anchored slope or mine tunnel is in a limit balance state, the stress in the horizontal direction should satisfy the equation:
Gt = k1 P+ k2
wherein Gt is a sliding force (kN) generated on a sliding surface by the self weight of the sliding mass, P is an NPR anchor rod tension (kN), and k1 and k2 are expressed as follows:
k1 = cos(α+θ)+sin(α+θ)tanφ
k2 = Gsinαtanφ+cA
theta is the included angle (DEG) between the NPR anchor rod and the horizontal plane, alpha is the included angle (DEG) between the sliding surface and the horizontal plane, A is the area (m 2) of the sliding surface, G is the self weight (kN) of the sliding mass, and c and phi are the cohesive force (kPa) and the internal friction angle (DEG) of the sliding mass respectively.
When the anchor rod is used, the anti-corrosion treatment of the anchor rod and all parts of the anchor rod is in accordance with the relevant technical regulations.
And (3) anti-rust treatment of the anchor rod: the whole anchor rod is coated with coal tar pitch which is a complex mixture of various high-molecular hydrocarbon platforms. The material has the characteristics of high aromatic hydrocarbon content, good chemical stability, strong rust resistance, low water absorption, good insulation, strong antimicrobial corrosion resistance and the like, so the material has long service life. In addition, the coal tar pitch has strong binding force with the surface of a metal structure and resists cathode stripping, so the coal tar pitch can be used as an anticorrosive coating of the anchor rod.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (9)
1. A recoverable multi-tray anchor rod device is characterized by comprising a self-tapping buried anchor head (1), a first telescopic structure (2) and N tray anchor rod units (3), wherein N is more than or equal to 1, a second telescopic structure (4), a pedestal (5), a base plate (6), a steel bar anchor head (7) and a fixing device;
the N supporting disk anchor rod units (3) are sequentially connected end to form a supporting disk anchor rod structure, a first telescopic structure (2) and a second telescopic structure (4) are respectively connected into the two ends of the supporting disk anchor rod structure to form an anchoring section, one end of the anchoring section is connected with a self-tapping soil-entering anchor head (1), and the other end of the anchoring section is connected with a pedestal (5);
one end of the steel bar anchor head (7) sequentially penetrates through the base plate (6) and the pedestal (5) and is connected with the second telescopic structure (4);
after the stock device buries, outwards pull out reinforcing bar anchor head (7), under the tensile action of first extending structure (2) and second extending structure (4) and self tapping bury anchor head (1) anchor effect, each rampart stock unit opens slowly, at this moment, fixing device is used for fixed reinforcing bar anchor head (7), the stock device plays the anchor effect, after the stock device uses, loosen fixing device, reinforcing bar anchor head (7) are inwards withdrawed under the effect of first extending structure (2), make each rampart stock unit draw in.
2. Retrievable multiple disc bolting device according to claim 1, characterised in that said disc bolting unit (3) comprises a disc bolting outer sleeve (3-1), a disc bolting inner sleeve (3-2);
n supporting discs (8) are circumferentially hinged to the outer surface of the supporting disc anchor rod inner sleeve (3-2), and N is more than or equal to 1;
the support disc anchor rod outer sleeve (3-1) is provided with a support disc extending hole (9) corresponding to the support disc, the support disc anchor rod inner sleeve (3-2) is located in the support disc anchor rod outer sleeve (3-1), and when the support disc anchor rod unit (3) is in a folded state, the tail end of the support disc (8) is lapped at the edge of the support disc extending hole (9); when the branch disc anchor rod unit (3) is opened slowly, the tail end of the branch disc (8) extends out of the branch disc extending hole (9).
3. The recyclable multi-tray anchor rod device according to claim 2, wherein N tray hinge seats (10) are circumferentially arranged on the outer surface of the inner tray anchor rod sleeve (3-2), N is more than or equal to 1;
the supporting disc hinge seat (10) is provided with a concave groove, a connecting shaft (11) is arranged in the concave groove in a rotating mode, the connecting shaft (11) is connected with the supporting disc (8), and the supporting disc (8) can rotate in the concave groove.
4. A retrievable multiple-tray anchor rod device according to claim 3, wherein through holes are provided at both sides of the recess, the connecting shaft (11) is provided with internally threaded holes (11-1) at both ends, the connecting shaft (11) is mounted in the through holes at both ends and a connecting bolt (12) is provided in the internally threaded hole (11-1) so that the connecting shaft (11) can rotate in the through holes.
5. Recoverable multi-disc anchor device according to claim 2, characterized in that the cross-section of the outer disc anchor sleeve (3-1) is of circular configuration; the section of the inner sleeve (3-2) of the branch anchor rod is of a regular polygon structure.
6. The recyclable multi-tray anchor rod device according to claim 2, wherein the outer tray anchor rod casing (3-1) is provided with threads at both ends, the outer tray anchor rod casings are connected by threads, the inner tray anchor rod casing (3-2) is provided with threads at both ends, and the inner tray anchor rod casings are connected by threads.
7. Retrievable multiple-tray anchor device according to claim 2, characterized in that the first telescopic structure (2) comprises a first outer sleeve (2-1), a first inner sleeve (2-2), a first spring (2-3); the first outer sleeve (2-1) and the first inner sleeve (2-2) are both hollow structures;
the first spring (2-3) is positioned in the first inner sleeve (2-2), one end of the first spring (2-3) is connected with the self-tapping soil-entering anchor head (1), and the other end of the first spring (2-3) is connected with the inner sleeve of the anchor rod of the supporting disc;
the first inner sleeve (2-2) is arranged in the first outer sleeve (2-1) in a sliding mode, one end of the first inner sleeve (2-2) is connected with the self-tapping and soil-entering anchor head (1), and a first clamping block (2-2-1) is arranged on the periphery of the other end of the first inner sleeve (2-2);
a first bayonet is arranged in one end of the first outer sleeve (2-1), and the other end of the first outer sleeve (2-1) is connected with an inner sleeve of the supporting disc anchor rod.
8. Retrievable multiple-tray anchor device according to claim 2, characterized in that the second telescopic structure (4) comprises a second outer sleeve (4-1), a second inner sleeve (4-2); the second outer sleeve (4-1) and the second inner sleeve (4-2) are both hollow structures;
the second inner sleeve (4-2) is arranged in the second outer sleeve (4-1) in a sliding mode, a second clamping block (4-2-1) is arranged on the periphery of one end of the second inner sleeve (4-2), and the other end of the second inner sleeve (4-2) is connected with a steel bar anchor head (7);
one end of the second outer sleeve (4-1) is connected with the inner sleeve of the supporting disc anchor rod, and a second bayonet is arranged in the other end of the second outer sleeve (4-1).
9. The recyclable multi-tray anchor rod device according to claim 1, wherein the steel bar anchor head (7) is a threaded structure, the fixing device comprises an upper clamping piece (14) and a lower clamping piece (15), a semi-arc-shaped upper clamping hole is formed in the lower end of the upper clamping piece (14), a semi-arc-shaped lower clamping hole is formed in the upper end of the lower clamping piece (15), the upper clamping hole and the lower clamping hole form a clamping hole, the diameter of the clamping hole is equal to the small diameter of the steel bar anchor head (7), clamping piece threaded connection holes (16) are formed in the upper clamping piece (14) and the lower clamping piece (15), and threaded connection holes corresponding to the clamping piece threaded connection holes (16) are formed in the base plate (5) and the pedestal (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211054770.5A CN115263394A (en) | 2022-08-30 | 2022-08-30 | Recoverable multi-tray anchor rod device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211054770.5A CN115263394A (en) | 2022-08-30 | 2022-08-30 | Recoverable multi-tray anchor rod device |
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| Publication Number | Publication Date |
|---|---|
| CN115263394A true CN115263394A (en) | 2022-11-01 |
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ID=83755651
Family Applications (1)
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|---|---|---|---|
| CN202211054770.5A Pending CN115263394A (en) | 2022-08-30 | 2022-08-30 | Recoverable multi-tray anchor rod device |
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| CN (1) | CN115263394A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117071594A (en) * | 2023-10-13 | 2023-11-17 | 四川省建筑科学研究院有限公司 | Foundation pit supporting structure |
-
2022
- 2022-08-30 CN CN202211054770.5A patent/CN115263394A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117071594A (en) * | 2023-10-13 | 2023-11-17 | 四川省建筑科学研究院有限公司 | Foundation pit supporting structure |
| CN117071594B (en) * | 2023-10-13 | 2023-12-22 | 四川省建筑科学研究院有限公司 | Foundation pit supporting structure |
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