CN110513372B - Expansion sleeve for fixed connection - Google Patents
Expansion sleeve for fixed connection Download PDFInfo
- Publication number
- CN110513372B CN110513372B CN201910911344.0A CN201910911344A CN110513372B CN 110513372 B CN110513372 B CN 110513372B CN 201910911344 A CN201910911344 A CN 201910911344A CN 110513372 B CN110513372 B CN 110513372B
- Authority
- CN
- China
- Prior art keywords
- expansion
- support plates
- reducer pipe
- ring
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 11
- 230000006835 compression Effects 0.000 claims abstract description 9
- 238000007906 compression Methods 0.000 claims abstract description 9
- 238000005452 bending Methods 0.000 claims abstract description 4
- 230000001681 protective effect Effects 0.000 claims description 19
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 6
- 238000005553 drilling Methods 0.000 description 12
- 239000010410 layer Substances 0.000 description 7
- 238000005056 compaction Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
- F16B13/06—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
- F16B13/063—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander
- F16B13/065—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander fastened by extracting the screw, nail or the like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention discloses an expansion sleeve for fixed connection, which is characterized in that a tightening groove is formed in the protection cover, the protection cover is formed by bending a reducer pipe, the large end of the reducer pipe is outwards turned to form a double-layer structure, the outer layer is spherical, the large end of the reducer pipe is inwards turned to form a compression ring, the inner edge of the compression ring is lower than the outer edge, two installation clamping rings are arranged on the inner wall of the other end of the reducer pipe, the two installation clamping rings penetrate through the protection cover, the tightening groove penetrates through the double-layer structure in the radial direction, a cross groove is formed by combining the tightening grooves, a fixing ring is arranged at one end of an expansion head, annular protrusions are arranged outside the fixing ring, the annular protrusions are embedded between the installation clamping rings, a plurality of elastic connecting plates are arranged on the end face of the fixing ring in an equal angle mode, and extension lines of the elastic connecting plates are located on the axis of the fixing ring.
Description
Technical Field
The invention discloses an expansion sleeve for fixed connection, relates to an expansion sleeve for expansion connection in a drilling hole during connection fixation, and belongs to the field of hardware fittings. In particular to an expansion sleeve which is used for covering a drilled hole through a protective cover and is matched with a double-thread structure arranged inside and outside an expansion sleeve to be fastened, expanded and fixedly connected by combining with the existing bolt.
Background
At present, when carrying out support installation and fixation, in order to increase the stability of support, fix it through the screw in the support bottom, when fixing, the mounted position drilling in advance, then correspond the installation with the support, taut fixed through expansion bolts, but after fixing, expansion bolts expands because rotatory traction, consequently the screw rod stretches out the distance overlength, form protruding at ground, bring potential safety hazard and inconvenience, also when the wall is installed the cantilever, because the drilling leads to the drill way damaged, after the installation, the drill way leaks outward, influence pleasing to the eye, and when the mouth collapses along, the gasket compresses tightly the effect on the expansion bolts worsens, need handle to the problem that brings above-mentioned, avoid bringing unnecessary trouble, and current expansion bolts all are integral structure, can not cooperate different bolts to connect fixedly.
Publication number CN208885728U discloses an expansion bolts with gap filling function, including the bolt body of rod, bolt head, nut, expansion pipe cover and toper extrusion head, the bolt head is connected the left side end of bolt body of rod, be equipped with external screw thread structure around the surface of bolt body of rod, the nut encircles and cup joints on the bolt body of rod and be close to the bolt head, the expansion pipe cover cup joints around the bolt body of rod, expansion pipe cover's right-hand member parallel connection a plurality of expansion board expands outward, expand each other a gap between the expansion board, expand expansion board's inboard terminal surface on protruding connection cutting board outward, the nut with cup joint spring washer and plain washer between the expansion pipe cover, the toper extrusion head is connected the right side end of bolt body of rod, the device still has outside extension length when using, can not compress tightly the support to the drilling oral area.
Disclosure of Invention
In order to improve the situation, the expansion sleeve for fixed connection provided by the invention is provided with a double-thread structure which is formed by covering a drilled hole through a protective cover and matching with the inside and outside of the expansion sleeve, and is fastened, expanded and fixedly connected by combining with the existing bolts.
The invention discloses an expansion sleeve for fixed connection, which is realized by a protective cover, an expansion head, a screwing groove, a mounting snap ring, a compression ring, a fixing ring, elastic connecting plates and a supporting plate.
Has the beneficial effects of.
1. Independent sleeve pipe structure can cooperate current different bolts to anchor.
2. The compaction edge is positioned at the outer side of the drilling hole, so that the collapse area of the orifice is avoided, and the compaction stability is good.
3. The protective cover avoids an upright extending structure and potential safety hazards.
4. Simple structure, double thread structure stability in use is good.
Drawings
Fig. 1 is a perspective view of an expansion shell for fixing connection according to the present invention.
Fig. 2 is a perspective view of an expansion shell for fixing connection according to the present invention, which shows only an internal schematic structure.
Fig. 3 is a perspective view of an expansion joint for a fixed connection expansion joint according to the present invention, which shows only the internal structure.
FIG. 4 is a schematic structural view of an expansion shell for fixing connection according to the present invention.
Fig. 5 is a schematic structural view of the expansion shell for fixing connection according to the present invention in use.
In the accompanying drawings
Wherein the parts are as follows: the device comprises a protective cover (1), an expansion head (2), a screwing groove (3), a mounting clamping ring (4), a clamping ring (5), a fixing ring (6), an elastic connecting plate (7), a supporting plate (8), bolts (9), a support base (10), a rock mass (11) and a drilling hole (12).
The specific embodiment is as follows:
the invention discloses an expansion sleeve for fixed connection, which is realized by a protective cover (1), an expansion head (2), a screwing groove (3), two mounting snap rings (4), a pressing ring (5), a fixing ring (6), an elastic connecting plate (7) and a supporting plate (8), wherein the screwing groove (3) is arranged on the protective cover (1), the protective cover (1) is formed by bending a reducing pipe, the large end of the reducing pipe is outwards turned to form a double-layer structure, the outer layer is spherical, the large end of the reducing pipe is inwards folded to form the pressing ring (5), the inner edge of the pressing ring (5) is lower than the outer edge, the other end of the reducing pipe is provided with the mounting snap rings (4), the two mounting snap rings (4) penetrate through the protective cover (1) and radially penetrate through the double-layer structure, the screwing groove (3) is combined to form a cross groove, one end of the expansion head (2) is provided with the fixing ring (6), the outer side of the fixing ring (6) is provided with an annular bulge, the annular bulge is embedded between the mounting snap rings (4), the inner edges of the plurality of the elastic connecting plates (7) are arranged on the corresponding to form a plurality of elastic connecting plates (7) at equal angles, the connecting plates (8) are arranged on the same angle, the elastic connecting plates (7) are arranged on the corresponding connecting plates (7), the conical surface is provided with threads, the outer side of the supporting plate (8) is provided with an expansion plate, a plurality of expansion plates are combined to form a round table, the round table is provided with threads, the conical taper formed by the round table taper and the supporting plate (8) is the same, the expansion plate extends along the outer side of the supporting plate (8), and the section of the expansion plate is of an arc-shaped structure.
When in use, firstly, the fixing surface is drilled with holes (12), the aperture of the holes (12) is smaller than the outer diameter of the other end of the protective cover (1) by 2-5mm, the placing frame is fixed at the position to be fixed, the mounting holes are corresponding to the holes (12), then the expansion head (2) sequentially passes through the mounting hole and the drilling hole (12), the expansion head (2) is gradually downwards along the drilling hole (12) by corresponding clamping of the screw driver in the screwing groove (3), so that the screw thread at the outer side of the expansion head (2) can gradually contact with the wall of the drilling hole (12) and is screwed in, when the screw thread is screwed in to the compression ring (5) to be attached to the placing frame, compressing the placing frame, fixing the placing frame, rotating the bolts (9) to correspondingly place the placing frame inside the fixed ring (6), so that the conical surface formed by combining the inner sides of the plurality of support plates (8) is contacted, then rotating, extruding the supporting plate (8) outwards through the rotation of the bolts (9) to drive the elastic two-layer cloth and the plate to bend, simultaneously, the expansion plate at the outer side of the supporting plate (8) is further deflected and is adhered and pressed with the wall of the drilling hole (12), the expansion state of the expansion head (2) is changed through the screwing-in state of the adjusting bolt (9), after the bolt (9) is screwed in, the end part of the drill hole is arranged on the inner side of the protective cover (1), and the protective cover (1) is used for wrapping and protecting, so that the purpose of connecting and fixing the drill hole (12) is achieved.
The protective cover (1) is formed by bending a reducer pipe, adopts an integrated structure, increases the overall strength, can form an outward expansion covering structure, and improves the protective compression range;
the large end of the reducer pipe is turned outwards to form a double-layer structure, different subareas can be generated, the inner side is used for accommodating bolts (9), and the outer layer is used for supporting and protecting;
the outer layer is spherical, a smooth outer protective layer is formed, external scraping is avoided, and the hazard risk of the existing protruding structure is reduced;
the large end of the reducer pipe is internally folded to form the compression ring (5), so that compression can be formed on the outer ring, the collapse area of the orifice of the drilling hole (12) is avoided, the compression range can be increased, and the stability is improved;
the inner edge of the pressing ring (5) is lower than the outer edge, so that a height difference can be formed during pressing, and the pressing ring (5) is tightly attached through deformation to prevent falling loose;
the annular bulge is embedded between the mounting clamping rings (4), and the expansion head (2) and the protective cover (1) are connected integrally by matching with the mounting rings, so that the use is convenient;
the inner sides of the supporting plates (8) are combined to form conical surfaces, expansion fit can be formed between bolts (9) with different use conditions, the supporting plates (8) are extruded and expanded, and a support is formed between walls of the drilling holes (12);
the expansion plates are combined to form a round table, threads are formed on the round table, and the round table is attached to the wall of the drill hole (12) to form embedded connection, so that falling and sliding are avoided;
the conical taper formed by combining the round table taper and the supporting plate (8) is the same, so that synchronous expansion can be formed at the inner side and the outer side of the supporting plate (8), and the synchronism is ensured;
the cross section of the expansion plate is of an arc-shaped structure and can be tightly attached to the wall of the drill hole (12);
when the bolt is used, the bolt (9) can be replaced by a threaded structure such as a stud;
the above embodiments are preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. It is intended that all modifications within the scope of the invention, i.e., all equivalents thereof, be embraced by the invention as they come within their scope without departing from the invention.
Claims (7)
1. An expansion sleeve for fixed connection, which is characterized in that: the protective cover is provided with a screwing groove, the protective cover is formed by bending a reducer pipe, the mounting snap rings are arranged on the inner wall of the small end of the reducer pipe, the mounting snap rings are two, the large end of the reducer pipe is outwards turned to form a double-layer structure, the outer layer of the double-layer structure is a spherical surface, the screwing groove radially penetrates through the double-layer structure, the screwing groove is combined to form a cross groove, one end of an expansion head is provided with a fixed ring, the outer side of the fixed ring is provided with an annular bulge, the annular bulge is embedded between the mounting snap rings, the expansion head and the protective cover are integrally connected in a matched manner, a plurality of elastic connection plates are arranged on the end face of the fixed ring at equal angles, extension line intersection points of the elastic connection plates are positioned on the axis of the fixed ring, the support plates are correspondingly arranged on the elastic connection plates, a plurality of support plates are combined on the inner sides of the support plates to form a conical surface, threads are formed between the conical surface and different bolts in an expansion fit, the support plates are extruded and expanded, support is formed between the support plates and the wall of the drill hole, the support plates are combined to form an expansion plate, and the expansion plate extends along the outer side of the support plate.
2. An expansion shell for fixed connection according to claim 1, wherein the large end of the reducer pipe is folded inwards to form a compression ring.
3. An expansion shell for a fastening connection according to claim 2, wherein the inner edge of the pressure ring is lower than the outer edge.
4. The expansion sleeve for fixed connection according to claim 1, wherein the taper of the circular truncated cone is the same as the taper of the cone formed by combining the support plates, so that synchronous expansion can be formed on the inner side and the outer side of the support plates, and the synchronism is ensured.
5. The expansion shell for fixed connection according to claim 1, wherein the expansion plate has an arc-shaped cross section, and can be tightly attached to the wall of the drill hole.
6. An expansion shell for a fastening connection according to claim 1, wherein in use the bolts are replaced with studs.
7. The expansion shell for fixing connection according to claim 1, wherein in use, holes are drilled on the fixing surface, the diameter of the drilled holes is smaller than the outer diameter of the small end of the protective cover by 2-5mm, and the placing frame is fixed at the position to be fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910911344.0A CN110513372B (en) | 2019-09-25 | 2019-09-25 | Expansion sleeve for fixed connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910911344.0A CN110513372B (en) | 2019-09-25 | 2019-09-25 | Expansion sleeve for fixed connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110513372A CN110513372A (en) | 2019-11-29 |
| CN110513372B true CN110513372B (en) | 2023-08-04 |
Family
ID=68633826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910911344.0A Active CN110513372B (en) | 2019-09-25 | 2019-09-25 | Expansion sleeve for fixed connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110513372B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113386575B (en) * | 2020-03-11 | 2023-03-24 | 中车唐山机车车辆有限公司 | Micro-rail vehicle system and current collector and sliding contact line thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1538401A (en) * | 1976-02-23 | 1979-01-17 | Hilti Ag | Expansible dowel |
| ES1036018U (en) * | 1996-12-24 | 1997-07-01 | Celo Distribucion S A | Fastening device |
| CN1171501A (en) * | 1996-06-05 | 1998-01-28 | 希尔蒂股份公司 | Inverse cutting rockbolt |
| US6287044B1 (en) * | 1999-01-05 | 2001-09-11 | Julius Blum Gesellschaft M.B.H. | Fitting |
| DE20202809U1 (en) * | 2002-02-22 | 2003-07-03 | Staboplast Kunststoffertigung | Method for fitting thermally insulating wall fasteners for insulating wall panels with a profiled spreading shaft driven into a plastic wall plug by a plastic thrust plug with integral air space |
| CN2895848Y (en) * | 2006-02-17 | 2007-05-02 | 杨建惠 | Expansion screw |
| CN101099046A (en) * | 2005-02-17 | 2008-01-02 | A.雷蒙合伙企业 | Fixing rivet |
| CN103398059A (en) * | 2013-06-25 | 2013-11-20 | 吴江市黎里建兴铸件厂 | Expansion screw |
| US8974163B2 (en) * | 2008-09-09 | 2015-03-10 | Mechanical Plastics Corp. | Wedge-type drop-in anchor assembly |
| CN106763028A (en) * | 2017-02-22 | 2017-05-31 | 深圳策动科技有限公司 | Concealed composite furniture coupling assembly and the composite furniture with the coupling assembly |
| CN207848137U (en) * | 2017-12-13 | 2018-09-11 | 苏州茂隆电梯配件有限公司 | A kind of self-expansion type anchor bolt |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPR070300A0 (en) * | 2000-10-12 | 2000-11-09 | Vale Statutory & Mining Services Pty Limited | Post cap |
-
2019
- 2019-09-25 CN CN201910911344.0A patent/CN110513372B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1538401A (en) * | 1976-02-23 | 1979-01-17 | Hilti Ag | Expansible dowel |
| CN1171501A (en) * | 1996-06-05 | 1998-01-28 | 希尔蒂股份公司 | Inverse cutting rockbolt |
| ES1036018U (en) * | 1996-12-24 | 1997-07-01 | Celo Distribucion S A | Fastening device |
| US6287044B1 (en) * | 1999-01-05 | 2001-09-11 | Julius Blum Gesellschaft M.B.H. | Fitting |
| DE20202809U1 (en) * | 2002-02-22 | 2003-07-03 | Staboplast Kunststoffertigung | Method for fitting thermally insulating wall fasteners for insulating wall panels with a profiled spreading shaft driven into a plastic wall plug by a plastic thrust plug with integral air space |
| CN101099046A (en) * | 2005-02-17 | 2008-01-02 | A.雷蒙合伙企业 | Fixing rivet |
| CN2895848Y (en) * | 2006-02-17 | 2007-05-02 | 杨建惠 | Expansion screw |
| US8974163B2 (en) * | 2008-09-09 | 2015-03-10 | Mechanical Plastics Corp. | Wedge-type drop-in anchor assembly |
| CN103398059A (en) * | 2013-06-25 | 2013-11-20 | 吴江市黎里建兴铸件厂 | Expansion screw |
| CN106763028A (en) * | 2017-02-22 | 2017-05-31 | 深圳策动科技有限公司 | Concealed composite furniture coupling assembly and the composite furniture with the coupling assembly |
| CN207848137U (en) * | 2017-12-13 | 2018-09-11 | 苏州茂隆电梯配件有限公司 | A kind of self-expansion type anchor bolt |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110513372A (en) | 2019-11-29 |
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