CN112482428A - Replaceable anchor bolt assembly for concrete foundation - Google Patents

Replaceable anchor bolt assembly for concrete foundation Download PDF

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Publication number
CN112482428A
CN112482428A CN202011275343.0A CN202011275343A CN112482428A CN 112482428 A CN112482428 A CN 112482428A CN 202011275343 A CN202011275343 A CN 202011275343A CN 112482428 A CN112482428 A CN 112482428A
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China
Prior art keywords
anchor
cylinder
anchor rod
sealing ring
ring
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CN112482428B (en
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陈建兵
马斌
闫喜强
荣超
杨康辉
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Facility Design And Instrumentation Institute Cardc
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Facility Design And Instrumentation Institute Cardc
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Publication of CN112482428A publication Critical patent/CN112482428A/en
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/44Foundations for machines, engines or ordnance
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38Connections for building structures in general
    • E04B1/41Connecting devices specially adapted for embedding in concrete or masonry
    • E04B1/4114Elements with sockets
    • E04B1/4121Elements with sockets with internal threads or non-adjustable captive nuts
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38Connections for building structures in general
    • E04B1/41Connecting devices specially adapted for embedding in concrete or masonry
    • E04B1/4157Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Foundations (AREA)

Abstract

The invention discloses a replaceable anchor bolt assembly for a concrete foundation, which comprises a steel skeleton, an anchor cylinder, an anchor bolt, a lining, a sealing ring and a nut assembly, wherein the steel skeleton is fixedly connected with the anchor cylinder; the steel skeleton and the anchor cylinder are fixedly connected and can be pre-buried in the concrete foundation, the anchor rod and the anchor cylinder are fixedly connected through threads, and the lining and the sealing ring are arranged between the anchor rod and the anchor cylinder. The structure that the anchor cylinder is fixedly connected with the steel skeleton can ensure the positioning precision of the anchor rod and the anchoring performance of the anchor rod in the foundation; the anchor cylinder and the anchor rod are in threaded connection, so that the replaceability of the anchor rod is realized, and the combination tightness of the anchor cylinder and the anchor rod is enhanced; through set up bush and sealing washer between stock and anchor section of thick bamboo, guaranteed the leakproofness of crab-bolt in the installation. All parts of the replaceable anchor bolt assembly are organically combined together, and can form a good stressed whole with a concrete foundation, so that the integrity and the replaceability of the anchor bolt assembly are realized.

Description

Replaceable anchor bolt assembly for concrete foundation
Technical Field
The invention belongs to the technical field of engineering installation, relates to an anchor bolt structure for a concrete foundation, and particularly relates to a replaceable anchor bolt assembly for the concrete foundation.
Background
In the installation of engineering equipment, an anchor bolt is a common method for connecting a foundation when a common structural part is installed and fixed. In various structures and equipment which are fixedly connected with a foundation by adopting foundation bolts, for the structures and equipment with higher requirements on settlement, the elevation of the equipment is usually adjusted regularly according to the result of observation of the settlement of the foundation so as to meet the use requirements. When adjusting equipment elevation, need dismantle fixed equipment's nut repeatedly sometimes, because of dismantling or reasons such as corrosion repeatedly to fixed equipment's nut, the condition of local failure or damage can probably appear in rag bolt's screw thread, at this moment need change rag bolt, but rag bolt generally all buries deeply in the basis, changes more difficultly, and the construction degree of difficulty is great.
The invention patent with application publication number CN106368235A discloses a prestressed cylinder type foundation with replaceable anchor bolts, which mainly comprises a concrete column body, an upper anchor plate, a lower anchor plate, anchor bolts, rigid sleeves and the like, wherein the rigid sleeves for isolating concrete are sleeved outside the anchor bolts. The invention patent with application publication number CN106351247A discloses an anchor cage ring type foundation with replaceable anchor bolts, which mainly comprises a foundation bearing platform, an upper anchor plate, a lower anchor plate, anchor bolts, a rigid sleeve and the like, wherein the rigid sleeve used for isolating concrete is sleeved outside the anchor bolts. The invention patent with application publication number CN105155571A discloses a replaceable prestressed anchor bolt device and an installation and replacement construction method thereof, which mainly comprises an upper anchor plate, a lower anchor plate, an anchor bolt, a plastic sleeve and the like, wherein the plastic sleeve for isolating concrete is sleeved outside the anchor bolt. Patent application with publication number CN201747544U discloses a mounting base of a wind driven generator and the wind driven generator, the mounting base of the wind driven generator mainly comprises a concrete body, at least more than two foundation bolts, sleeves and the like, and the sleeves for isolating the foundation bolts from the concrete body are sleeved on the foundation bolts. All above modes all set up the sleeve pipe in order to keep apart rag bolt or crab-bolt and concrete at rag bolt or crab-bolt overcoat, so there is the clearance between rag bolt or crab-bolt and the sleeve pipe, therefore rag bolt or crab-bolt and concrete do not effectively the consolidation be a atress whole, and the steadiness is relatively poor, and is not hard up easily.
Therefore, how can conveniently change the rag bolt that damages or became invalid, can guarantee again that removable crab-bolt and basic concrete form the atress better holisticly integratively, strengthen the wholeness, can also reduce the construction degree of difficulty effectively, become rag bolt's an optimization direction, have important meaning to the engineering installation field.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a replaceable anchor bolt assembly for a concrete foundation, which has the advantages of reasonable structural design, strong integrity, convenience in replacement, simplicity in construction and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
a replaceable anchor bolt assembly for a concrete foundation comprises a steel skeleton, an anchor cylinder, an anchor bolt, a lining, a sealing ring and a nut assembly;
the anchor cylinder is of a cylindrical structure and comprises an upper cylinder body and a lower cylinder body which are integrally formed, the inner diameter of the upper cylinder body is larger than that of the lower cylinder body, so that a step surface A is formed at the junction of the upper cylinder body and the lower cylinder body, a cavity formed in the inner side wall of the upper cylinder body is of a regular polygon prism structure, and the inner side wall of the lower cylinder body is of a thread structure;
the anchor rod comprises an upper thread section, a middle section and a lower thread section from top to bottom, the diameter of the middle section is larger than that of the upper thread section and that of the lower thread section, so that a step B surface is formed at the junction of the upper thread section and the middle section, a step C surface is formed at the junction of the lower thread section and the middle section, and the middle section is of a regular polygon prism structure;
the bushing is of a regular polygonal column hollow structure, a cavity formed by the inner side wall of the bushing is of a regular polygonal column structure, and the upper end of the outer side wall of the bushing protrudes radially outwards to form an annular flange;
the sealing ring is of an annular structure, the upper end and the lower end of the inner side wall of the sealing ring are respectively inwards protruded in the radial direction to form an upper ring body and a lower ring body, the inner diameter of the upper ring body is smaller than that of the lower ring body, and the lower side surface of the upper ring body and the upper side surface of the lower ring body and the sealing ring body jointly form an annular groove;
the lower end surface of the lower cylinder body of the anchor cylinder is fixedly connected with the steel skeleton, the anchor rod is arranged in the anchor cylinder, the lower spiral section of the anchor rod is in threaded connection with the lower cylinder body of the anchor cylinder, the C step surface of the anchor rod is in contact with the A step surface of the anchor cylinder, and the middle section of the anchor rod is higher than the upper cylinder body of the anchor cylinder; the bush is embedded between the middle section of the anchor rod and the upper cylinder body of the anchor cylinder, and the upper end surface of the bush is flush with the B step surface of the anchor rod; the upper ring body and the lower ring body of the sealing ring are respectively pressed and sleeved on the anchor rod and the lining, and the flange of the lining is clamped in the ring groove of the sealing ring; the nut component is arranged on the upper thread section of the anchor rod to fix a workpiece to be fixed.
Above-mentioned a removable crab-bolt sub-assembly for concrete foundation, for the installation stability and the leakproofness that increase the sealing washer, preferably set up annular groove I on the B step face of stock, the downside setting of the upper ring body of sealing washer and the annular of I adaptation of annular groove I protruding I. Further preferred the up end of barrel sets up annular groove II on the anchor section of thick bamboo, and the downside of the sealing washer lower ring body sets up the annular bulge II with II adaptations of annular groove. Through the cooperation of annular groove and annular bulge, make sealing washer stability reinforcing, difficult not hard up also further increases overall structure's leakproofness from this. Obviously, the number of the annular grooves I and the annular protrusions I matched with the annular grooves I is not limited at all, and the number of the annular grooves II and the annular protrusions II matched with the annular grooves II is not limited at all and can be designed according to practical situations.
Above-mentioned a removable crab-bolt sub-assembly for concrete foundation, nut component mainly used cooperation stock upper thread section uses in order to fix the work piece that waits to fix, therefore nut component can be the nut component that the field is commonly used, if include nut, packing ring etc. nut component's mounting means also adopts conventional mode can. The nut assembly of the present invention preferably includes a flat washer, a spring washer, and a nut. The spring washer has the function of preventing the nut from loosening, and the flat washer is used for increasing the contact area between the spring washer and a workpiece to be fixed, so that the stability is further increased.
The replaceable anchor bolt assembly for the concrete foundation is preferably characterized in that a plurality of anchor bars are fixedly connected to the outer side wall of the anchor cylinder. The fixed connection mode of the anchor bars and the outer side wall of the anchor cylinder is preferably welding. The outer side wall of the anchor cylinder is welded with the anchor bar structure, so that the tightness of the combination of the anchor cylinder and the installation foundation can be further enhanced, and meanwhile, the anchoring performance of the anchor cylinder in the installation foundation can also be enhanced. The number of the anchor bars is not specially limited, and the anchor bars can be designed according to the length of the anchor cylinder and other practical conditions.
Above-mentioned a removable crab-bolt sub-assembly for concrete foundation, the steel skeleton is fixed in the concrete foundation together with the anchor section of thick bamboo when using, and the steel skeleton mainly plays the supporting role, and it cooperates with the anchor section of thick bamboo, guarantees the positioning accuracy of stock promptly, increases the anchor ability of stock in the foundation again. On the premise of achieving the above functions, the specific structure of the steel skeleton is not particularly limited. The steel skeleton preferably comprises a support plate and a plurality of support columns, the support columns are fixedly connected with the lower surface of the support plate, and the fixed connection mode can be a threaded connection mode, a welding mode or an integrated fixed connection mode which is commonly used in the field. The lower end face of the lower cylinder body of the anchor cylinder is fixedly connected with the upper surface of the supporting plate, and the fixed connection mode of the anchor cylinder and the supporting plate is preferably welding for the convenience of production, manufacturing and installation.
Above-mentioned a removable crab-bolt sub-assembly for concrete foundation, stock interlude are regular polygon prism structure, adopt regular polygon prism structure mainly to make the stock possess prevent changeing with the function of bolt head, further strengthen the stability of crab-bolt sub-assembly. In consideration of convenience of a manufacturing process and manufacturing cost, the regular polygonal prism structure is preferably a regular hexagonal prism structure or a regular octagonal prism structure, and is more preferably a regular octagonal prism structure.
Above-mentioned a removable crab-bolt sub-assembly for concrete foundation, the sealing washer is rubber seal. The rubber sealing ring has elasticity, is more convenient to install and is in interference fit with the anchor rod and the lining, so that better sealing performance is achieved.
The invention provides a mounting construction method of a replaceable anchor bolt assembly for a concrete foundation, which comprises the following steps:
the steel skeleton and the anchor cylinder fixedly connected with the steel skeleton are embedded in the concrete foundation, the upper surface of the concrete foundation is a horizontal plane, the upper end surface of the anchor cylinder is slightly higher than the upper surface of the concrete foundation, after the concrete reaches specified strength, the anchor rod is screwed to enable the lower thread section of the anchor rod to be in threaded connection with the lower cylinder body of the anchor cylinder to form a whole, the step surface C of the anchor rod is in contact with the step surface A of the anchor cylinder, the flange of the bushing is clamped in the annular groove of the sealing ring, the bushing drives the sealing ring to be embedded into a gap between the upper cylinder body of the anchor cylinder and the middle section of the anchor rod, and the upper end surface of the bushing is flush with the step. The method comprises the steps of forming a through hole corresponding to an anchor rod on a bottom plate of a workpiece to be fixed, sleeving the bottom plate at the upper end of the upper thread section of the anchor rod through the through hole, reserving a certain distance between the bottom plate and the upper surface of a concrete foundation, pressing the bottom plate through a nut assembly, adjusting the bottom plate, pouring and filling a secondary grouting layer in a gap between the bottom plate and the concrete foundation, and completing installation after the secondary grouting layer reaches specified strength.
The invention provides a replacement construction method of a replaceable anchor bolt assembly for a concrete foundation, which comprises the following steps:
the nut component is taken down, the bottom plate is moved away, the secondary grouting layer is removed, the sealing ring and the lining are sequentially taken down, the damaged anchor rod is screwed and taken out, a new anchor rod is inserted, the anchor rod is screwed to enable the lower thread section of the anchor rod to be in threaded connection with the lower barrel of the anchor barrel to form a whole, the C step surface of the anchor rod is in contact with the A step surface of the anchor barrel, the flange of the lining is clamped in the annular groove of the sealing ring, the lining drives the sealing ring to be embedded into the gap between the upper barrel of the anchor barrel and the middle section of the anchor rod, and the upper end surface of the. And sleeving the bottom plate of the workpiece to be fixed on the upper thread section of the anchor rod again, reserving a certain distance between the bottom plate and the upper surface of the concrete foundation, pressing the bottom plate tightly through the nut assembly, adjusting the bottom plate, pouring and filling a secondary grouting layer in a gap between the bottom plate and the concrete foundation, and finishing installation after the secondary grouting layer reaches the specified strength.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial technical effects:
1. the replaceable anchor bolt assembly for the concrete foundation comprises a steel skeleton, an anchor cylinder, an anchor bolt, a lining, a sealing ring and a nut assembly, wherein the anchor cylinder and the steel skeleton are fixedly connected, and the anchor cylinder and the steel skeleton can be embedded in the concrete foundation together, so that the positioning accuracy of the anchor bolt can be ensured, and the anchoring performance of the anchor bolt in the foundation can be ensured; the anchor cylinder and the anchor rod are in threaded connection, so that the replaceability of the anchor rod is realized, and the combination tightness of the anchor cylinder and the anchor rod is enhanced; the bush and the sealing ring are arranged between the anchor rod and the anchor cylinder, so that the sealing performance of the anchor rod in the installation process is ensured; therefore, all parts of the anchor bolt assembly are organically combined together, a good stressed whole can be formed with the installation foundation, and the integrity and the replaceability of the anchor bolt assembly are realized.
2. According to the replaceable anchor bolt assembly provided by the invention, the anchor rib structure is arranged on the outer side wall of the anchor cylinder, so that the tightness of the combination of the anchor cylinder and the foundation can be further enhanced, and meanwhile, the anchoring performance of the anchor cylinder in the foundation is enhanced.
3. According to the replaceable anchor bolt assembly, the middle section of the anchor bolt, the inner cavity of the upper cylinder body of the anchor cylinder, the inner cavity of the lining and the side wall are all in the regular polygon prism structure, so that the rotation prevention of the anchor bolt and the lining is realized, and the anchor bolt is convenient to take out of the anchor bolt from the anchor cylinder.
4. The replaceable anchor bolt assembly provided by the invention has the advantages of reasonable structural design, simplicity and convenience in installation and replacement construction, capability of saving a large amount of maintenance cost, reduction in cost, effective improvement of replacement efficiency, strong practicability and high popularization value.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other embodiments and drawings can be obtained according to the embodiments shown in the drawings without creative efforts.
FIG. 1 is a schematic view of a replaceable anchor assembly for a concrete foundation in use;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
fig. 3 is an enlarged view of fig. 1 at a portion I.
Description of reference numerals: 1. a concrete foundation; 2. a steel skeleton; 3. an anchor cylinder; 4. an anchor rod; 5. a bushing; 6. a seal ring; 7. a base plate; 8. a flat washer; 9. a spring washer; 10. a nut; 11. secondary grouting layer; 12. and (6) anchoring the ribs.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In this embodiment, a replaceable anchor bolt assembly for a concrete foundation is shown in fig. 1, and includes a steel skeleton 2, an anchor cylinder 3, an anchor rod 4, a bushing 5, a sealing ring 6 and a nut assembly.
The steel skeleton 2 comprises a supporting plate and a plurality of supporting columns, the supporting columns are fixedly connected with the lower surface of the supporting plate, and the number of the supporting columns can be designed according to actual conditions.
The whole anchor cylinder 3 is of a cylinder structure and comprises an upper cylinder body and a lower cylinder body which are integrally formed. The inner diameter of the upper cylinder body is larger than that of the lower cylinder body, so that a step surface A is formed at the junction of the upper cylinder body and the lower cylinder body. A cavity formed on the inner side wall of the upper cylinder body is of a regular octagonal prism structure; the cavity that lower barrel inner wall formed is the cylinder structure, and lower barrel inner wall has the helicitic texture. A plurality of anchor bars 12 are uniformly welded on the outer side wall of the anchor cylinder 3, and the number of the anchor bars 12 can be designed according to actual conditions. As shown in figure 3, the upper end surface of the cylinder body on the anchor cylinder 3 is also provided with an annular groove II.
The anchor rod 4 comprises an upper thread section, a middle section and a lower thread section which are coaxial from top to bottom. The diameters of the upper thread section and the lower thread section are the same, and the diameter of the middle section is slightly larger than that of the upper thread section and the lower thread section, so that a step surface B is formed at the junction of the upper thread section and the middle section, and a step surface C is formed at the junction of the lower thread section and the middle section. The middle section is in a regular octagonal prism structure. The height of the middle section of the anchor rod 4 is larger than that of the cylinder body on the cylinder. As shown in fig. 3, the anchor rod 4 is further provided with an annular groove i on the B step surface.
As shown in FIG. 2, the bushing 5 is a regular octagonal prism hollow structure as a whole, the cavity formed by the inner side wall of the bushing 5 is also an octagonal prism structure, and the upper end of the outer side wall of the bushing 5 is radially convex to form an annular flange. The height of the bush 5 is equal to the height of the middle section of the anchor rod 4.
As shown in fig. 3, the sealing ring 6 is an annular structure, the upper and lower ends of the inner sidewall of the sealing ring 6 are respectively protruded inward in the radial direction to form an upper ring body and a lower ring body, the inner diameter of the upper ring body is smaller than the inner diameter of the lower ring body, and the lower side surface of the upper ring body and the upper side surface of the lower ring body and the sealing ring 6 body together form an annular groove. The downside of the last ring body of sealing washer 6 is provided with the annular bulge I with I adaptation of annular groove. The downside of the lower ring body of sealing washer 6 is provided with the annular bulge II with II adaptations of annular groove. In this embodiment, the seal ring 6 is a rubber seal ring 6. The inner diameter of the upper ring body is slightly smaller than the diameter of the upper thread section of the anchor rod 4, so that the upper ring body is in interference fit with the anchor rod 4 during assembly. The inner diameter of the lower ring is slightly larger than the diameter of the bushing 5.
The nut assembly comprises a flat washer 8, a spring washer 9 and a nut 10.
The lower end surface of the lower cylinder body of the anchor cylinder 3 is welded on the upper surface of the supporting plate of the steel framework 2. The anchor rod 4 is arranged in the anchor cylinder 3, the lower spiral section of the anchor rod 4 is in threaded connection with the lower cylinder body of the anchor cylinder 3, the step surface C of the anchor rod 4 is in contact with the step surface A of the anchor cylinder 3, and the step surface B of the anchor rod 4 is arranged on the upper end surface of the upper cylinder body of the anchor cylinder 3. During bush 5 inlays and locates the space between the barrel on 4 interlude of stock and the anchor section of thick bamboo 3, the inside wall of barrel contacts on 5 lateral walls of bush and the anchor section of thick bamboo 3, and the lateral wall of 5 inside wall anchor stocks 4 interlude of bush contacts, and 5 up end of bush flushes with the B step face of anchor stock 4. The upper ring body of the seal ring 6 is pressed and sleeved on the anchor rod 4, the lower ring body is pressed and sleeved on the lining 5, and the flange of the lining 5 is clamped in the annular groove of the seal ring 6; annular protrusion I is clamped in annular groove I, and annular protrusion II is clamped in annular groove II. The flat washer 8, the spring washer 9 and the nut 10 are sequentially sleeved on the upper thread section of the anchor rod 4 to fix a workpiece to be fixed.
In order to make the structural principle of the replaceable anchor assembly for a concrete foundation more clear to those skilled in the art, the installation construction method and the replacement construction method of the replaceable anchor assembly for a concrete foundation provided in the present embodiment will be briefly described below to further demonstrate the advantages of the present invention.
The installation and construction method of the replaceable anchor bolt assembly for the concrete foundation provided by the embodiment comprises the following steps:
the steel skeleton 2 and the anchor cylinder 3 fixedly connected with the steel skeleton 2 are embedded in the concrete foundation 1, the upper surface of the concrete foundation 1 is a horizontal plane, the upper end surface of the anchor cylinder 3 is slightly higher than the upper surface of the concrete foundation 1, and after the concrete reaches the specified strength, the anchor rod 4 is screwed to enable the lower thread section of the anchor rod 4 to be in threaded connection with the lower cylinder body of the anchor cylinder 3 to form a whole, and the step surface C of the anchor rod 4 is in contact with the step surface A of the anchor cylinder 3. The flange of the bush 5 is clamped in the ring groove of the seal ring 6, the bush 5 with the seal ring 6 is embedded into a gap between the upper cylinder body of the anchor cylinder 3 and the middle section of the anchor rod 4, and the upper end surface of the bush 5 is flush with the step surface B of the anchor rod 4; the upper ring pressing sleeve of the sealing ring 6 is arranged on the anchor rod 4, the lower ring pressing sleeve is arranged on the lining 5, the annular protrusion I is clamped in the annular groove I, and the annular protrusion II is clamped in the annular groove II. A through hole corresponding to the anchor rod 4 is formed in a bottom plate 7 of a workpiece to be fixed, the bottom plate 7 is sleeved at the upper end of the upper thread section of the anchor rod 4 through the through hole, a certain distance is reserved between the bottom plate 7 and the upper surface of the concrete foundation 1, a flat washer 8, a spring washer 9 and a nut 10 are sequentially sleeved on the upper thread section of the anchor rod 4 to tightly press the bottom plate 7, the bottom plate 7 is adjusted, a secondary grouting layer 11 is poured and filled in a gap between the bottom plate 7 and the concrete foundation 1, and after the secondary grouting layer 11 reaches the specified strength, initial installation is completed.
The replacement construction method of the replaceable anchor bolt assembly for the concrete foundation provided by the embodiment comprises the following steps:
the nut 10, the spring washer 9 and the flat washer 8 are sequentially taken down, the bottom plate 7 of a workpiece to be fixed is removed, the secondary grouting layer 11 is removed, the sealing ring 6 and the lining 5 are sequentially taken down, the damaged anchor rod 4 is screwed and taken out, the new anchor rod 4 is inserted into the anchor barrel 3, the anchor rod 4 is screwed to enable the lower thread section of the anchor rod 4 to be in threaded connection with the lower barrel body of the anchor barrel 3 to form a whole, and the step surface C of the anchor rod 4 is in contact with the step surface A of the anchor barrel 3. The flange of the bush 5 is clamped in the ring groove of the seal ring 6, the bush 5 with the seal ring 6 is embedded into a gap between the upper cylinder body of the anchor cylinder 3 and the middle section of the anchor rod 4, and the upper end surface of the bush 5 is flush with the step surface B of the anchor rod 4; the upper ring pressing sleeve of the sealing ring 6 is arranged on the anchor rod 4, the lower ring pressing sleeve is arranged on the lining 5, the annular protrusion I is clamped in the annular groove I, and the annular protrusion II is clamped in the annular groove II. And sleeving the bottom plate 7 for fixing the workpiece on the upper thread section of the anchor rod 4 again, reserving a certain distance between the bottom plate 7 and the upper surface of the concrete foundation 1, sequentially sleeving the flat washer 8, the spring washer 9 and the nut 10 on the upper thread section of the anchor rod 4 to tightly press the bottom plate 7, adjusting the bottom plate 7, pouring and filling a secondary grouting layer 11 in a gap between the bottom plate 7 and the concrete foundation 1, and replacing and installing the secondary grouting layer 11 after the secondary grouting layer reaches the specified strength.

Claims (8)

1. A replaceable anchor bolt assembly for a concrete foundation is characterized by comprising a steel skeleton (2), an anchor cylinder (3), an anchor bolt (4), a bushing (5), a sealing ring (6) and a nut component;
the anchor cylinder (3) is of a cylindrical structure and comprises an upper cylinder body and a lower cylinder body which are integrally formed, the inner diameter of the upper cylinder body is larger than that of the lower cylinder body, so that a step surface A is formed at the junction of the upper cylinder body and the lower cylinder body, a cavity formed in the inner side wall of the upper cylinder body is of a regular polygon prism structure, and the inner side wall of the lower cylinder body is of a thread structure;
the anchor rod (4) comprises an upper thread section, a middle section and a lower thread section from top to bottom, the diameter of the middle section is larger than that of the upper thread section and that of the lower thread section, so that a step B surface is formed at the junction of the upper thread section and the middle section, a step C surface is formed at the junction of the lower thread section and the middle section, and the middle section is of a regular polygon prism structure;
the bushing (5) is of a regular polygonal column hollow structure, a cavity formed by the inner side wall of the bushing (5) is of a regular polygonal column structure, and the upper end of the outer side wall of the bushing (5) protrudes outwards in the radial direction to form an annular flange;
the sealing ring (6) is of an annular structure, the upper end and the lower end of the inner side wall of the sealing ring (6) are respectively inwards protruded in the radial direction to form an upper ring body and a lower ring body, the inner diameter of the upper ring body is smaller than that of the lower ring body, and the lower side surface of the upper ring body and the upper side surface of the lower ring body and the sealing ring (6) body jointly form an annular groove;
the lower end face of the lower cylinder body of the anchor cylinder (3) is fixedly connected with the steel framework (2), the anchor rod (4) is installed in the anchor cylinder (3), the lower spiral section of the anchor rod (4) is in threaded connection with the lower cylinder body of the anchor cylinder (3), the C step surface of the anchor rod (4) is in contact with the A step surface of the anchor cylinder (3), and the middle section of the anchor rod (4) is higher than the upper cylinder body of the anchor cylinder (3); the bushing (5) is embedded between the middle section of the anchor rod (4) and the upper barrel body of the anchor barrel (3), and the upper end surface of the bushing (5) is flush with the step surface B of the anchor rod (4); an upper ring body and a lower ring body of the sealing ring (6) are respectively pressed and sleeved on the anchor rod (4) and the lining (5), and a flange of the lining (5) is clamped in a ring groove of the sealing ring (6); the nut component is arranged on the upper thread section of the anchor rod (4) to fix a workpiece to be fixed.
2. A replaceable anchor bolt assembly for a concrete foundation according to claim 1, wherein the B step surface of the anchor bolt (4) is provided with an annular groove i, and the lower side surface of the upper ring body of the sealing ring (6) is provided with an annular protrusion i adapted to the annular groove i.
3. A replaceable anchor bolt assembly for a concrete foundation as claimed in claim 1, wherein the upper end surface of the upper cylinder of the anchor cylinder (3) is provided with an annular groove ii, and the lower side surface of the lower ring of the sealing ring (6) is provided with an annular projection ii adapted to the annular groove ii.
4. Replaceable anchor assembly for concrete foundations according to claim 1, characterized in that the nut component comprises a flat washer (8), a spring washer (9) and a nut (10).
5. Replaceable anchor assembly for concrete foundations according to claim 1, characterized in that a number of anchor bars (12) are fixedly connected to the outer side wall of the anchor barrel (3).
6. The replaceable anchor bolt assembly for a concrete foundation as claimed in claim 1, wherein the steel skeleton (2) comprises a support plate and a plurality of support columns, the support columns are fixedly connected with the lower surface of the support plate, and the lower end surface of the lower cylinder body of the anchor cylinder (3) is fixedly connected with the upper surface of the support plate.
7. A replaceable anchor assembly for a concrete foundation as claimed in any one of claims 1 to 6, wherein said regular polygonal prism structure is a regular hexagonal prism structure or a regular octagonal prism structure.
8. Replaceable anchor assembly for concrete foundations according to any one of claims 1 to 6, characterized in that the sealing ring (6) is a rubber sealing ring.
CN202011275343.0A 2020-11-16 2020-11-16 Replaceable anchor bolt assembly for concrete foundation Active CN112482428B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203755336U (en) * 2014-03-31 2014-08-06 北京金风科创风电设备有限公司 Anchor plate anchor bolt combined part and anchor bolts
CN204385905U (en) * 2015-01-04 2015-06-10 长沙有色冶金设计研究院有限公司 For the replaceable bolt embedment device of large equipment base
JP2018003304A (en) * 2016-06-28 2018-01-11 センクシア株式会社 Anchor reinforcing structure, anchor reinforcing method and anchor reinforcing member
CN108385711A (en) * 2018-04-18 2018-08-10 上海磐武工业科技有限公司 A kind of anchor cage ring formula basis and its installation method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203755336U (en) * 2014-03-31 2014-08-06 北京金风科创风电设备有限公司 Anchor plate anchor bolt combined part and anchor bolts
CN204385905U (en) * 2015-01-04 2015-06-10 长沙有色冶金设计研究院有限公司 For the replaceable bolt embedment device of large equipment base
JP2018003304A (en) * 2016-06-28 2018-01-11 センクシア株式会社 Anchor reinforcing structure, anchor reinforcing method and anchor reinforcing member
CN108385711A (en) * 2018-04-18 2018-08-10 上海磐武工业科技有限公司 A kind of anchor cage ring formula basis and its installation method

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