CN113374177B - Anchor device - Google Patents
Anchor device Download PDFInfo
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- CN113374177B CN113374177B CN202110730582.9A CN202110730582A CN113374177B CN 113374177 B CN113374177 B CN 113374177B CN 202110730582 A CN202110730582 A CN 202110730582A CN 113374177 B CN113374177 B CN 113374177B
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- outer sleeve
- anchor ring
- hole
- clamping piece
- anchor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
- E04C5/125—Anchoring devices the tensile members are profiled to ensure the anchorage, e.g. when provided with screw-thread, bulges, corrugations
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses an anchor device, which adopts a conical clamping piece, an anchor ring and an outer sleeve to form a self-locking reinforced anchor structure, wherein coaxial through holes are formed in the conical clamping piece, the anchor ring and the outer sleeve, the through hole of the outer sleeve is a step through hole, the anchor ring is a conical through hole, one end of the anchor ring is in contact with the step end surface in the through hole of the outer sleeve, one end of the conical clamping piece is arranged in the through hole of the anchor ring, an inner rib is arranged in the through holes of the conical clamping piece, the anchor ring and the outer sleeve in a penetrating manner, a compression screw is connected with the through hole of the outer sleeve in an internal thread manner, the end part of the compression screw is in contact with the end part of the conical clamping piece, a self-locking structure is formed by the compression screw and the outer sleeve, the application of prestress is completed, the accurate control of the prestress is realized through the length of a jacking thread, the clamping piece is stressed and tightened, meanwhile, the outer part of the anchor ring is restrained by a jacking spring and a bolt, and the inner rib can be effectively engaged and anchored by the clamping piece.
Description
Technical Field
The invention relates to the technical field of civil engineering, in particular to an anchor device.
Background
At present, a common anchor widely used in various fields is in the form of a clip type anchor, which generally comprises an anchor ring and two or three clamping pieces, wherein an inner conical surface is formed inside the anchor ring, an outer conical surface matched with the clamping pieces is formed outside the clamping pieces in a circular truncated cone shape, the clamping pieces are generally used in a surrounding and surrounding manner, transverse threads are transversely arranged on the inner side surfaces of the clamping pieces, so that inner ribs can be conveniently engaged, and the anchoring state of the inner ribs is mainly kept by utilizing the wedging principle of conical holes. When in use, the steel strand or the prestressed tendon is fixed in the clamping piece, and the clamping piece is directly penetrated and fitted in the anchor ring.
For materials such as shape memory alloy rods, aluminum alloy rods and the like, the materials are basically rod-shaped materials with smooth surfaces, and the smooth rod-shaped materials are easy to dislocate and slide clamping pieces in the clamping process when a clamping piece type anchorage device is used. For the internal rib with large SMA strength and higher hardness, after the preliminary penetration of the clamping piece type anchorage device is finished, the actual meshing state of the transverse threads on the inner side surface of the clamping piece and the surface of the smooth internal rib is unstable; and after the reinforcement is tensioned under stress in the later period, the clamping piece is further tightened in the anchor ring, the inner reinforcement obviously slides due to the smooth surface, and in the sliding process, the clamping piece is tightened and then meshed with the inner reinforcement again to keep the anchoring state. If the friction force of the shape memory alloy rod is increased by adopting a thread picking mode or the shape memory alloy rod is anchored by using a bolt, the material in the rod is damaged, the deformation performance of the material is seriously reduced, and the fracture strain is reduced to about 6 percent from 18 percent; the aluminum alloy material has low hardness and small elastic modulus, and can cause a plurality of problems of insufficient thread tooth strength and the like due to the adoption of a mantle fiber mode for anchoring.
In addition, the existing prestress loading mostly adopts a mode of combining a straight-through jack and a common anchorage device, the loading method can cause the preserved length of the prestress to be overlong, and the prestress needs to be cut off after the prestress is applied. The shape memory alloy materials are expensive, which undoubtedly results in high costs and waste.
Disclosure of Invention
The invention aims to provide an anchorage device to overcome the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an anchorage device, includes toper clamping piece, anchor ring and outer sleeve, toper clamping piece, anchor ring and outer sleeve are equipped with coaxial through-hole, the outer sleeve through-hole is the ladder through-hole, the anchor ring is the toper through-hole, the one end of anchor ring and the interior ladder end face contact of outer sleeve through-hole, toper clamping piece one end sets up in the through-hole of anchor ring, in the through-hole of toper clamping piece, anchor ring and outer sleeve was worn to locate to interior muscle, the through-hole internal thread connection of outer sleeve has the tip of housing screw and the tip contact of toper clamping piece.
Furthermore, a jacking spring is arranged between the anchor ring and the outer sleeve, and a gasket is arranged between the jacking spring and the anchor ring.
Furthermore, the pipe wall of the outer sleeve is provided with an L-shaped slotted hole, the anchor ring is provided with an annular groove, and the outer sleeve and the anchor ring are fixed through a bolt.
Furthermore, one side of the L-shaped slotted hole is axially arranged along the outer sleeve, the other side of the L-shaped slotted hole is circumferentially arranged, and an L-shaped slotted hole structure is formed on the surface of the outer sleeve.
Furthermore, one end of the outer sleeve is rotatably connected with a pressure-bearing backing ring, and the end part of the pressure-bearing backing ring is contacted with the anchoring plate.
Furthermore, a fixing ring is arranged on the contact surface of the conical clamping piece and the anchor ring.
Furthermore, the contact surface of the pressure bearing backing ring and the anchoring plate is provided with a fixing ring.
Furthermore, the outer sleeve adopts a double-step outer sleeve, and one end of the compression screw, which is in contact with the conical clamping piece, is of a conical structure.
The utility model provides an anchorage device, includes toper clamping piece, anchor ring, adjusting nut and pressure-bearing backing ring, and toper clamping piece, anchor ring and pressure-bearing backing ring are equipped with coaxial through-hole, and adjusting nut and pressure-bearing backing ring threaded connection, anchor ring are the toper through-hole, and the one end and the pressure-bearing backing ring terminal surface contact of anchor ring, toper clamping piece one end set up in the through-hole of anchor ring, and interior muscle is worn to locate in the through-hole of toper clamping piece, anchor ring and pressure-bearing backing ring.
Furthermore, a fixing ring is arranged on the contact surface of the adjusting nut and the anchor ring.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention relates to an anchorage device, which adopts a conical clamping piece, an anchor ring and an outer sleeve to form a self-locking reinforced anchorage structure.
Further, the pipe wall of outer sleeve is equipped with L shape slotted hole, be equipped with the ring channel on the anchor ring, the outer sleeve passes through the bolt with the anchor ring and fixes, adopt the bolt to realize the fixed of anchor ring, dismantle the change can be accomplished through extracting the bolt when dismantling, because the position of bolt and anchor ring is fixed in the outer sleeve, so housing screw contacts and exerts pressure with the clamping piece bottom at the in-process of screw in, make the clamping piece atress tighten up, the outside restraint of exerting jointly by roof pressure spring and bolt of anchor ring simultaneously, and then make interior muscle can be by effective interlock of clamping piece and anchor.
Furthermore, one end of the outer sleeve is rotatably connected with a pressure-bearing backing ring, the end part of the pressure-bearing backing ring is in contact with the anchoring plate, the compression screw moves outwards simultaneously when the outer sleeve is screwed out, the clamping piece is tightened, so that the self-tightening of the anchorage device is not influenced, the pressure-bearing backing ring is stopped being screwed, the inner rib is kept at the current length, and the applied pretensioning force exists in the inner rib. At the moment, a gasket with proper thickness can be placed in a gap between the pressure-bearing backing ring and the double-step outer sleeve to fill the gap so as to keep stability, the gap between the backing ring and the outer sleeve is the deformation length of the inner rib, the operation is simple, and the material length of the prestressed rib in the process of applying prestress is reduced.
According to the anchorage device, the adjusting nut is tightly propped against the anchor ring through the pressure-bearing backing ring and drives the whole anchorage device to move towards the outer side of the anchoring plate, and in the moving process, the inner rib is stretched under the tension of the anchorage device; stopping screwing the adjusting nut, keeping the current length of the inner rib, and applying pretension force in the inner rib, at the moment, placing a gasket with proper thickness in a gap between the pressure-bearing backing ring and the adjusting nut to fill the gap so as to keep stability, wherein the gap between the pressure-bearing backing ring and the adjusting nut is the deformation length of the inner rib, and the operation is simple.
Drawings
Fig. 1 is a schematic structural view of an anchor device in embodiment 1 of the present invention.
Fig. 2 is a schematic view of the structure of the outer sleeve and the compression screw in embodiment 1 of the present invention.
Fig. 3 is a schematic side view of the outer sleeve according to embodiment 1 of the present invention.
Fig. 4 is an enlarged view at a in fig. 1.
FIG. 5 is a schematic view of the anchor device according to embodiment 2 of the present invention.
Fig. 6 is a schematic structural view of a pressure-bearing backing ring and an adjusting nut in embodiment 2 of the invention.
FIG. 7 is a schematic view showing the structure of an anchor device according to embodiment 3 of the present invention.
Fig. 8 is a schematic structural view of a double-step outer sleeve, a compression screw and a pressure-bearing backing ring in embodiment 3 of the invention.
In the figure, the device comprises an inner rib 1, an inner rib 2, a fixing ring 3, a conical clamping piece 4, an anchor ring 5, a gasket 6, a jacking spring 7, an outer sleeve 8, a compression screw 9, a pressure-bearing backing ring 10, an adjusting nut 11, a double-step outer sleeve 12, an anchor plate 13 and a bolt.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, an anchor device comprises a conical clamping piece 3, an anchor ring 4 and an outer sleeve 7, wherein the conical clamping piece 3, the anchor ring 4 and the outer sleeve 7 are provided with coaxial through holes, the through hole of the outer sleeve 7 is a step through hole, the anchor ring 4 is a conical through hole, one end of the anchor ring 4 is in contact with the inner step end surface of the through hole of the outer sleeve 7, one end of the conical clamping piece 3 is arranged in the through hole of the anchor ring 4, an inner rib 1 is arranged in the through holes of the conical clamping piece 3, the anchor ring 4 and the outer sleeve 7 in a penetrating way, a compression screw 8 is connected to the through hole of the outer sleeve 7 in a threaded way, the end part of the compression screw 8 is in contact with the end part of the conical clamping piece 3, and the compression screw 8 is used for exerting pretightening force on the conical clamping piece 3 to realize clamping effect.
A jacking spring 6 is arranged between the anchor ring 4 and the outer sleeve 7, and a gasket 5 is arranged between the jacking spring 6 and the anchor ring 4; the pipe wall of the outer sleeve 7 is provided with an L-shaped slotted hole, the anchor ring 4 is provided with an annular groove, and the outer sleeve 7 and the anchor ring 4 are fixed through a bolt 13. One side edge of the L-shaped slotted hole is axially arranged along the outer sleeve 7, the other side of the L-shaped slotted hole is arranged along the circumference, an L-shaped slotted hole structure is formed in the surface of the outer sleeve 7, when the bolt 13 is inserted into the annular groove of the anchor ring 4, the bolt 13 is rotated to the position, in the slotted hole formed along the circumference, of the outer sleeve 7, the axial limiting of the anchor ring 4 can be realized, and then the clamping effect is realized by applying pretightening force to the conical clamping piece 3 through the compression screw 8.
One end of the outer sleeve 7 is rotatably connected with a pressure-bearing backing ring 9, the end part of the pressure-bearing backing ring 9 is in contact with the anchoring plate 12, the conical clamping piece 3 clamps the inner rib 1 through the contact of the anchor ring 4 and the conical surface of the conical clamping piece 3, then the outer sleeve 7 and the pressure-bearing backing ring 9 are rotated, the outer sleeve 7 and the pressure-bearing backing ring 9 generate relative motion along the axial direction, and the outer sleeve 7 presses the anchor ring 4 and the conical clamping piece 3 to further clamp the inner rib 1 while exerting pressure pretightening force.
The contact surface of the conical clamping piece 3 and the anchor ring 4 is provided with a fixed ring 2. The outer sleeve 7 adopts a double-step outer sleeve. The contact end of the compression screw 8 and the conical clamping piece 3 is of a conical structure.
In order to make the technical problems and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
(1) Design of element size
As shown in detail in figures 1-8, 65Mn steel is uniformly selected for steel materials in examples 1-3 (the material properties should meet GB/T1222-2007). The diameter of the clamped inner rib 1 is d, and the diameter of the circular through hole of the compression screw 8 is d +10.0mm; the thickness of the gasket 5 is 4.0mm, the diameter of the circular through hole is d +8.0mm, and the outer diameter of the gasket is d +40.0mm.
In example 1: the rigidity K of the top pressure spring 6 is =100.0N/mm, and the internal force of the spring is F s K · Δ L, where Δ L is the compression of the spring in the direction of the force; the inner diameter of the through hole of the outer sleeve 7 is d +10.0mm, the wall thickness is 5.0mm, and the outer wall is manufactured into a hexagonal section according to the GB/T6170 standard; two sides of the outer sleeve 7 are symmetrically provided with L-shaped slotted holes into which the bolts 13 can be inserted; the plug pin 13 can pass through an L-shaped reserved hole on the outer sleeve and can be inserted into a prefabricated annular groove on the outer wall of the anchor ring 4, as shown in figures 3 and 4; the bolt is a strip-shaped plate, the length, the width and the height are respectively e, (b-2) mm and (c-2) mm, and the detailed sizes in the figure are as follows: a =35mm, b =5.0mm, c =15.0mm, d =40.0mm, e =42.0mm, f =7.0mm.
In example 2: the inner diameter of a through hole of the pressure-bearing backing ring 9 is d +10.0mm, the bottom of the through hole is a standard hexagonal section, and the thickness of the inner wall at the thread part is 5.0mm; the adjusting nut is correspondingly produced according to the standard of a normal hexagonal nut.
In the embodiment 3, the inner diameter of the through hole of the double-step outer sleeve 11 is d +20.0mm, the wall thickness is 5.0mm, and the outer wall is made into a hexagonal section according to the GB/T6170 standard.
In addition, fine-tooth common threads with the thread pitch of 1.5mm are selected between the inner wall of the sleeve and the outer wall of the compression screw as well as between the pressure-bearing backing ring and the adjusting nut, and the thread length is 40.0mm. The thread pair anti-extrusion, anti-shearing strength and thread self-locking performance at the threaded connection part meet the following relations:
in the formula, F u Is an axial force; sigma t Allowing extrusion stress for the material; tau is t Shear stress is required for the material; d s Is a middle thread of an external thread of a compression screw or a pressure bearing backing ring; d 1 The diameter of the outer thread of the compression screw or the pressure-bearing backing ring is small, and the diameter D of the inner thread of the outer sleeve is large; h is the working height of the thread, p is the thread pitch, and the common thread is used, then
b is the thread root width, with a normal thread, b =0.75p, where p is the thread pitch; z is the number of combined turns; psi is a helix angle, namely the included angle between the tangent line of the helix on the middle transit cylindrical surface and the plane vertical to the axis of the helix; psi v Is the equivalent friction angle; alpha is a thread form angle, namely an included angle of two side edges of the thread form in the axial plane of the thread, and alpha =60 degrees by using common threads; s is a lead, n is a thread helix book mesh, and p is a thread pitch, then S = np; d 2 Is a middle thread of an external thread of a compression screw or a pressure bearing backing ring; beta is a thread profile oblique angle, namely the included angle between the side edge of the thread profile and the vertical plane of the thread axis, and beta = alpha/2 when a common thread is used; f is the sliding friction coefficient of the screw pair; f. of v Is the equivalent coefficient of friction of the screw pair.
Because the compression screw and the pressure bearing backing ring are both provided with through holes and are not solid screws, the compression screw and the pressure bearing backing ring have through holes according to actual conditions
In the formula, F u Is an axial force; d 1 The small diameter is a small diameter of a screw thread of a compression screw or a pressure-bearing backing ring; h is the original triangular height and has the same effect as the common thread
p is the pitch; a. The 0 Is the hollow area of the through hole; sigma 0 Allowable tensile stress, σ, for the material 0 ＝σ s /S，σ s The yield stress is the safety coefficient of S, and is generally 3-5.
Example 1:
the device can improve the defect of the slippage of the clamping piece. Referring to fig. 1-4, the device mainly comprises an outer sleeve 7, a jacking spring 6, a gasket 5, a compression screw 8 and a bolt 13, and after preliminary penetrating and assembling of the clip type anchorage device is completed, the clip type anchorage device can effectively tighten the inner ribs. When in use, the outer sleeve is firstly threaded on the inner rib and is tightly attached to the anchoring plate 12. The clamping piece type anchorage device is arranged in the outer sleeve in a penetrating way; a jacking spring 6 and a gasket 5 are fixed in the outer sleeve 7, a round hole is reserved in the middle of the outer sleeve, and the jacking spring and the gasket can be arranged in the inner rib together with an anchorage device in a penetrating manner; a bolt 13 horizontally penetrates through the position of an L-shaped slotted hole 7.1 on the outer wall of the outer sleeve 7 and is further inserted into an annular groove reserved in the anchor ring 4, and the bolt can drive the anchor ring to move in the hole 7.1; horizontally placing the inserted pin into 7.2 of the L-shaped slotted hole, pressing the top pressure spring 6 tightly, and fixing the inserted pin and the anchor ring at the same time; the conical clamping piece can be placed in after the anchor ring is fixed, and the compression screw 8 can be screwed in through the thread on the inner wall of the outer sleeve. In an initial state, one end of the jacking spring is fixed with the inner part of the outer sleeve, and the other end of the jacking spring is tightly jacked against the anchor ring through a gasket; the bottom of the conical clamping piece is contacted with the compression screw and is tightly propped against the compression screw, and the bolt is used for fixing the position of the anchor ring in the length direction of the inner rib, as shown in figure 1. When the device is used, the outer wall of the outer sleeve can be fixed by using a hexagonal wrench, and the bottom of the compression screw is screwed by using the hexagonal wrench to enable the compression screw to be screwed in. Because the positions of the plug pin and the anchor ring are fixed in the outer sleeve, the compression screw is contacted with the bottom of the clamping piece and applies pressure in the screwing-in process, so that the clamping piece is stressed and tightened, and meanwhile, the outer part of the anchor ring is restrained by the jacking spring and the plug pin together, so that the inner rib can be effectively occluded and anchored by the clamping piece. And after tightening is finished, the bolt is pulled out.
Example 2:
the device can be used for manually applying pretension force to the inner rib anchored by the clamping piece type anchorage device. Referring to fig. 5, the device comprises a gasket 5, an adjusting nut 10 and a pressure-bearing backing ring 9. After the preliminary penetrating and installing of the clamping piece type anchorage device is completed, the pretension force can be applied to the inner rib through the device. The end part of the pressure bearing backing ring 9 is provided with threads which can be connected with the threads on the inner wall of the adjusting nut. In an initial state, the pressure-bearing backing ring 9 is positioned on the anchoring plate 12; the adjusting wheel nut 10 is pressed against the anchor ring 4 by means of a washer 5, as shown in fig. 5. When the device is used, the bottom of the pressure-bearing backing ring can be fixed by using a hexagonal wrench, and then the adjusting nut is screwed out by using the hexagonal wrench; the adjusting nut is tightly propped against the anchor ring through the pressure-bearing backing ring and drives the whole anchor device to move towards the outer side of the anchoring plate, and in the moving process, the inner ribs are stretched under the tensile force of the anchor device; the adjusting nut is stopped from being screwed, and the inner rib is kept at the current length, and the applied pretension force is already applied inside the inner rib. At the moment, a gasket with proper thickness can be placed in a gap between the pressure-bearing backing ring and the adjusting nut to fill the gap so as to keep stability, the gap between the pressure-bearing backing ring and the adjusting nut is the deformation length of the inner rib, and the operation is simple.
Example 3:
the device can realize the self-tightening function in the embodiment 1 and can also realize the pre-tightening function in the embodiment 2. Referring to fig. 7 and 8, the double-step outer sleeve structure comprises a gasket 5, a double-step outer sleeve 11, a pressure bearing backing ring 9 and a compression screw 8. After the preliminary penetrating and assembling of the clamping piece type anchorage device is completed, the self-tightening of the anchorage device can be realized, the internal ribs can be applied with pretension, the inner diameters of two ends of the double-step outer sleeve 11 are different, and the inner walls of the two ends are provided with threads; one end of the pressure-bearing cushion ring can be connected with the pressure-bearing cushion ring 9, and the other end of the pressure-bearing cushion ring is connected with the compression screw 8. When in use, the pressure-bearing backing ring and the double-step outer sleeve are firstly penetrated and installed, the gasket is arranged between the pressure-bearing backing ring and the anchoring plate 12, then the clamping piece type anchorage device is penetrated and installed, and finally the compression screw is installed into the outer sleeve; in the initial state, the whole device is attached to the anchoring plate 12, one end of the clip type anchorage device is tightly propped against the inner wall of the double-step outer sleeve through the gasket, and the other end of the clip type anchorage device is contacted with the compression screw, as shown in fig. 7, when the device is used, the self-tightening function of the anchorage device is firstly realized. The outer wall of the double-step outer sleeve can be fixed by using a hexagonal wrench, and the bottom of the compression screw is screwed by using the hexagonal wrench to be screwed in, so that the anchor device can effectively tighten the inner rib in the same principle as the principle of the embodiment 1. On the basis of which the function of exerting a pretension can then be realized. The present apparatus differs from example 2 in the application of the prestressing force. The outer part of the double-step outer sleeve is fixed by a hexagonal wrench, and then the pressure-bearing backing ring is screwed by the hexagonal wrench, so that the double-step outer sleeve is screwed out relatively, which is similar to the principle of the embodiment 2. It should be noted that the outer sleeve is unscrewed and the compression screw is simultaneously moved outwards, and the self-tightening of the anchor is not affected because the clamping pieces are tightened. The inner ribs will remain at the current length with the applied pretension inside them, stopping screwing the pressure bearing backing ring. At the moment, a gasket with proper thickness is arranged in a gap between the pressure-bearing backing ring and the double-step outer sleeve to fill the gap so as to keep stability, the gap between the backing ring and the outer sleeve is the deformation length of the inner rib, and the operation is simple.
The invention has simple principle, fewer internal elements and convenient operation, can effectively overcome the existing defects of the common clip type anchorage and complete the prestress application work. Embodiment 1 can realize accurate positioning anchor, still can change the extrusion force of wedge clamping piece according to different material needs according to the internal spring compressive capacity, solves ordinary anchor clamps and produces the problem of sliding in the tight in-process of anchor, reduces and even eliminates the gap between ground tackle and the body component. Embodiment 2 is realized on the basis of original ordinary ground tackle, accomplishes prestressing force and exerts, realizes the accurate control of prestressing force through jacking screw thread length. Embodiment 3 is a self-prestressed self-locking anchor, which completely combines all the advantages of embodiments 1 and 2 and reduces the material length of prestressed tendons during prestressing.
Claims (5)
1. An anchorage device is characterized by comprising a conical clamping piece (3), an anchor ring (4) and an outer sleeve (7), wherein coaxial through holes are formed in the conical clamping piece (3), the anchor ring (4) and the outer sleeve (7), the through hole of the outer sleeve (7) is a stepped through hole, the anchor ring (4) is a conical through hole, one end of the anchor ring (4) is in contact with the stepped end face in the through hole of the outer sleeve (7), one end of the conical clamping piece (3) is arranged in the through hole of the anchor ring (4), an inner rib (1) is arranged in the through holes of the conical clamping piece (3), the anchor ring (4) and the outer sleeve (7) in a penetrating mode, a pressing screw (8) is connected to the through hole of the outer sleeve (7) in a threaded mode, the end portion of the pressing screw (8) is in contact with the end portion of the conical clamping piece (3), a jacking spring (6) is arranged between the anchor ring (4) and the outer sleeve (7), a gasket (5) is arranged between the jacking spring (6) and the anchor ring (4), an L-shaped groove hole is formed in the pipe wall of the outer sleeve (7), and a bolt (13) is fixed; one side of the L-shaped slotted hole is axially arranged along the outer sleeve (7), the other side of the L-shaped slotted hole is circumferentially arranged, and an L-shaped slotted hole structure is formed on the surface of the outer sleeve (7).
2. An anchorage assembly according to claim 1, wherein one end of the outer sleeve (7) is pivotally connected to a pressure bearing grommet (9), the end of the pressure bearing grommet (9) being in contact with the anchor plate (12).
3. An anchorage assembly according to claim 1, wherein the contact surfaces of the tapered clamping jaw (3) and the anchor ring (4) are provided with a retaining ring (2).
4. An anchorage assembly according to claim 2, wherein the contact surfaces of the bearing backing ring (9) and the anchor plate (12) are provided with retaining rings (2).
5. An anchorage assembly according to claim 1, wherein the outer sleeve (7) is a double step outer sleeve, and the end of the compression screw (8) in contact with the tapered jaw (3) is of a tapered configuration.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110730582.9A CN113374177B (en) | 2021-06-29 | 2021-06-29 | Anchor device |
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|---|---|---|---|
| CN202110730582.9A CN113374177B (en) | 2021-06-29 | 2021-06-29 | Anchor device |
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| CN113374177A CN113374177A (en) | 2021-09-10 |
| CN113374177B true CN113374177B (en) | 2023-02-17 |
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| CN115450435B (en) * | 2022-08-10 | 2023-10-03 | 中交一公局集团有限公司 | Single equal prestress tensioning equipment |
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| GB742737A (en) * | 1953-05-12 | 1956-01-04 | Donovan Henry Lee | Improvements in and relating to bar gripping means for use in the production of prestressed concrete |
| KR100862248B1 (en) * | 2007-06-18 | 2008-10-09 | 경희대학교 산학협력단 | Anchoring apparatus and prestressed structure having the same |
| CN206158201U (en) * | 2016-11-10 | 2017-05-10 | 河海大学 | It contracts to pace up and down can dismantle gripper type ground tackle device |
| CN207959721U (en) * | 2018-02-13 | 2018-10-12 | 沈阳建筑大学 | The composite anchorage of FRP presstressed reinforcing steels |
| CN210947423U (en) * | 2019-10-11 | 2020-07-07 | 吕天杰 | Anchor for fixing photovoltaic support steel cable |
| CN212897611U (en) * | 2020-04-22 | 2021-04-06 | 中交第四航务工程局有限公司 | Template opposite-pulling reinforcing device |
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