CN102966650A - Strengthening type undercut anchor bolt - Google Patents
Strengthening type undercut anchor bolt Download PDFInfo
- Publication number
- CN102966650A CN102966650A CN2012104747753A CN201210474775A CN102966650A CN 102966650 A CN102966650 A CN 102966650A CN 2012104747753 A CN2012104747753 A CN 2012104747753A CN 201210474775 A CN201210474775 A CN 201210474775A CN 102966650 A CN102966650 A CN 102966650A
- Authority
- CN
- China
- Prior art keywords
- cutting
- bolt
- cutter tooth
- sleeve
- crab
- 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.)
- Pending
Links
Images
Landscapes
- Forging (AREA)
Abstract
The invention discloses a strengthening type undercut anchor bolt, which comprises a screw. The lower part of the screw is provided with a connection section sleeved on an undercut cutting head in a penetrating way, the upper part of the connection section is provided with a strengthening section, the diameter of the strengthening section is more than the diameter of the connection section, and the peripheral surfaces of the strengthening section and the connection section are provided with threads; the undercut cutting head is sleeved on the connection section in the penetrating way, the lower end of the connection section is provided with a conical nut matched with the undercut cutting head, the conical surface of the conical nut is arc-shaped, and the upper end of the undercut cutting head is arranged in a way of propping against a connection part of the strengthening section and the connection section; and the strengthening section is provided with a tightening nut. Due to the strengthening section on the screw of the anchor bolt, the shearing strength of the anchor can be improved. Due to cutting teeth arranged on the undercut cutting head of the anchor, the installation effect of the anchor bolt can be improved.
Description
Technical field
The present invention relates to a kind of reinforced end crab-bolt of cutting, be specifically related to that a kind of shearing strength is reinforced, the sleeve bottom be provided with cut the bed plate tooth cut end crab-bolt.
Background technique
Cutting end crab-bolt is construction industry anchoring piece commonly used, usually be provided with the parts such as screw rod, expansion sleeve, be installed in greatly enforcement anchoring of expansion sleeve bottom expansion change in the pre-processed boring, in the time of its expansion the sidewall of boring bottom pushed, need to could expand behind the destruction installation basic material.
Existing cutting after end crab-bolt effectively installs can be resisted axially larger pulling force, be difficult to it is extracted mounting hole, but screw rod shearing strength radially is inadequate, cuts off easily, thereby reduced anchoring strength, stays serious potential safety hazard.
Simultaneously, it is strong not to mounting hole hole wall cutting-in force to have the expansion sleeve of cutting end crab-bolt now, and when installation basic material hardness was higher, expansion sleeve just was difficult to the concrete of hole wall is consisted of destruction, can not effectively install.
Summary of the invention
Problem for the background technique existence, the object of the present invention is to provide a kind of reinforced end crab-bolt of cutting, the screw rod of this crab-bolt is provided with strengthening segment, improved the shearing strength of crab-bolt, this crab-bolt cut the bed plate head when playing the expansion sleeve effect, also be provided with the cutter tooth that is beneficial to incision mounting hole hole wall, can improve the installation effect of crab-bolt.
In order to achieve the above object, the present invention adopts following technological scheme to realize:
A kind of reinforced end crab-bolt of cutting is provided with screw rod, and described screw rod bottom is to wear the linkage section of cutting the bed plate head, and linkage section top is provided with strengthening segment, and the strengthening segment diameter is provided with screw thread greater than linkage section on the circumferential surface of strengthening segment and linkage section; Described linkage section upper sleeve through is cut the bed plate head, and the linkage section lower end is provided with and the cone nut of cutting the bed plate head and matching, and the conical surface of cone nut is the radian conical surface, cuts bed plate head upper end and leans joint at strengthening segment and linkage section; Be provided be used to the nut that screws on the described strengthening segment.
Further, the described bed plate head of cutting comprises sleeve, the sleeve cylindrical is provided with several anti-projections of revolving, the sleeve lower end is provided with cuts bottom structure, this is cut the barrel that bottom structure cuts apart the sleeve lower end by cracking seam and consists of, cut the bottom structure lower end and be provided with cutter tooth, cutter tooth is circumferentially uniform around sleeve axis, cuts bottom structure and is strutted the anti-structure of revolving of rear described cutter tooth incision mounting hole hole wall formation by cone nut.
Further, the described anti-projection of revolving is made into integration with sleeve.
Further, the barrel on described cutter tooth top with the radial contraction section with outstanding cutter tooth.
Further, described cutter tooth outer side surface band is conducive to cut the taper rib of mounting hole hole wall, and the inboard bottom of cutter tooth is with the chamfering that cooperates with cone nut.
Further, described sleeve is provided with on described cutter tooth top and discharges the annular groove that produces stress when expanding, and described cracking seam intersects with annular groove.
Further, described nut bottom is with flange, or pad is set below nut.
Further, be provided with hard material layer on the working surface of described cutter tooth.
Further, described hard material adopts diamond or cemented carbide.
A kind of reinforced end crab-bolt of cutting of the present invention has the following advantages:
This screw rod of cutting end crab-bolt is provided with strengthening segment, and the strengthening segment enlarged diameter has improved the shearing strength of crab-bolt; The bed plate head of cutting of this crab-bolt is provided with the cutter tooth that is beneficial to incision mounting hole hole wall, can improve the installation effect of crab-bolt.
Cut the bed plate head and use as expansion sleeve simultaneously, the bottom structure of cutting of lower end is expansion structure, and this Length Ratio ordinary cartridge of cutting the bed plate head is short, saves raw material.
This conical surface of cutting end cone nut that crab-bolt is used adopts the radian conical surface, slowly strengthen the power of strutting when strutting the expansion structure of cutting the bed plate head, begin to enter apply when cutting the bed plate head to strut power little, along with strutting the power that struts that the increasing of amplitude applies, expansion structure also increases gradually, and deeply cut behind the bed plate head its radian conical surface can with cut that bed plate head inner chamber is intact to coincide, be surface contact state with internal chamber wall, and the straight line conical surface is the line contact condition with expansion structure always in strutting process, so more be conducive to the expansion of expansion structure and the incision of cutter tooth than the straight line conical surface, and cut that the steady state of crab-bolt also increases substantially behind the end, the tension load-carrying properties also improve greatly.
Description of drawings
Fig. 1 is the three-dimensional view of the embodiment of the invention 1;
Fig. 2 is the exploded view of the embodiment of the invention 1;
Fig. 3 is the plan view of the embodiment of the invention 1;
Fig. 4 is the side view of the embodiment of the invention 1;
Fig. 5 is along the sectional view of A-A among Fig. 4;
Fig. 6 by the embodiment of the invention 1 use cut the partial sectional view of bed plate head;
Fig. 7 is the partial sectional view of cone nut used herein;
Fig. 8 by the embodiment of the invention 3 use cut the plan view of bed plate head;
Fig. 9 by the embodiment of the invention 3 use cut the stereogram of bed plate head;
Among the figure: 1. nut, 2. pad, 3. screw rod, 3-1. strengthening segment, 3-2. linkage section, 4. cut anti-projection, 4-3. annular groove, 4-4. cutter tooth, 4-5. cracking seam, the 5. cone nut of revolving of bed plate head, 4-1. sleeve, 4-2..
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, structure of the present invention, feature and effect are described in detail as follows.
Such as Fig. 1, Fig. 2, Figure 5 shows that one of embodiment of the invention, in this embodiment, the reinforced end crab-bolt of cutting is provided with screw rod 3, screw rod 3 bottoms are to wear the linkage section 3-2 that cuts bed plate head 4, linkage section 3-2 top is provided with strengthening segment 3-1, strengthening segment 3-1 diameter is provided with screw thread greater than linkage section 3-2 on the circumferential surface of strengthening segment 3-1 and linkage section 3-2; The diameter proportioning of strengthening segment 3-1 and linkage section 3-2 can adopt following combination: 14 with 10mm collocation, 16 with the 12mm collocation, 24 with the 16mm collocation.Certainly, according to actual needs, can also adopt the diameter proportioning of other numerical value, not enumerate one by one at this.
Linkage section 3-2 upper sleeve through is cut bed plate head 4, linkage section 3-2 lower end is provided with and the cone nut 5 of cutting bed plate head 4 and matching, cut bed plate head 4 upper ends and lean joint at strengthening segment 3-1 and linkage section 3-2, the section of being reinforced 3-1 institute is spacing, the external diameter of cutting bed plate head 4 need to adapt to strengthening segment 3-1, can adopt the diameter that is equal to; The conical surface of cone nut 5 is the radian conical surface, as shown in Figure 7; Be provided with on the strengthening segment 3-1 be used to the nut 1 that screws.
This is reinforced cuts end crab-bolt and why uses cone nut 5 with the radian conical surface, slowly to strengthen the power of strutting when strutting the expansion structure of cutting bed plate head 4 because of this cone nut 5, begin to enter apply when cutting bed plate head 4 to strut power little, along with strutting the power that struts that the increasing of amplitude applies, expansion structure also increases gradually, and deeply cut the bed plate head 4 rear radian conical surfaces can with cut that bed plate head 4 inner chambers are intact to coincide, be surface contact state with internal chamber wall, and the straight line conical surface is the line contact condition with expansion structure always in strutting process, so more be conducive to the expansion of expansion structure and the incision of cutter tooth 4-4 than the straight line conical surface, and the steady state of crab-bolt also increases substantially after expanding, and has reduced the possibility that cone nut 5 retreats slippage.
As shown in Figure 3, Figure 4, the sleeve 4-1 cylindrical of cutting bed plate head 4 is provided with several to be prevented revolving protruding 4-2, adopts 3 among this embodiment, can also adopt according to actual needs the setting of 4 other numbers such as grade.When this crab-bolt is installed, screwing nut 1 can force screw rod 3 to drive on the cone nuts 5 to move, just entered when cutting bed plate head 4 in cone nut 5, can apply a friction rotating force to cutting bed plate head 4, this moment, this frictional force was less, anti-revolve protruding 4-2 and match with the mounting hole hole wall and can stop the rotation of following of cutting bed plate head 4, thereby be the condition of further deeply having created of cone nut 5.
Prevent that revolving protruding 4-2 can fix by welding manner and sleeve 4-1.
As shown in Figure 6, sleeve 4-1 lower end is provided with cuts bottom structure, this cuts bottom structure also is expansion structure, the barrel of being cut apart sleeve 4-1 lower end by cracking seam 4-5 consists of, cut the bottom structure lower end and be provided with cutter tooth 4-4, cutter tooth 4-4 is circumferentially uniform around sleeve 4-1 axis, cuts bottom structure and is strutted rear cutter tooth 4-4 incision mounting hole hole wall by cone nut 5 and consist of and anti-ly revolve structure, can effectively stop the rotation of cutting bed plate head 4 and on move.
As shown in Figure 6, the barrel on cutter tooth 4-4 top with the radial contraction section with outstanding cutter tooth 4-4.
As shown in Figure 6, cutter tooth 4-4 outer side surface band is conducive to cut the taper rib of mounting hole hole wall, and the inboard bottom of cutter tooth 4-4 is with the chamfering that cooperates with cone nut 5, and this chamfering is conducive to entering of cone nut 5.
As shown in Figure 6, sleeve 4-1 is cutting the annular groove 4-3 that produces stress when bottom structure top is provided with the release expansion, and cracking seam 4-5 extends upward with annular groove 4-3 and intersects, and can eliminate the stress concentration phenomenon when cutting the bottom structure expansion.
As shown in Figure 2, nut 1 below arranges pad 2, and the outside diameter of pad 2 need to play the effect of support greater than the mounting hole diameter to nut 1 when screwing nut 1, and same effect also can be played with the nut of flange in the employing bottom.
In this inventive embodiment 2, be provided with hard material layer on the working surface of cutter tooth 4-4, hard material adopts diamond or cemented carbide, can adopt the form of coating or weld layer.
Be provided with the cutter tooth 4-4 of hard material layer, can improve the collapsing force to mounting hole hole wall material, accelerate the crab-bolt installation rate, improve fastness is installed.
Such as Fig. 8, Figure 9 shows that the embodiment of the invention 3, in this embodiment, anti-revolve protruding 4-2 with sleeve 4-1 is made into integration, the use press tool is carried out punching press to the barrel upper-end surface of sleeve 4-1 and can be formed circumferential projection.Adopt this structure can reduce the manufacturing procedure of cutting bed plate head 4, improve the manufacturing efficiency of cutting end crab-bolt.
Above describedly be construed as the present invention and be not limited to above embodiment just for the present invention is described, meet the various flexible form of inventive concept all within protection scope of the present invention.
Claims (9)
1. the reinforced end crab-bolt of cutting is provided with screw rod, it is characterized in that, described screw rod bottom is to wear the linkage section of cutting the bed plate head, linkage section top is provided with strengthening segment, and the strengthening segment diameter is provided with screw thread greater than linkage section on the circumferential surface of strengthening segment and linkage section; Described linkage section upper sleeve through is cut the bed plate head, and the linkage section lower end is provided with and the cone nut of cutting the bed plate head and matching, and the conical surface of cone nut is the radian conical surface, cuts bed plate head upper end and leans joint at strengthening segment and linkage section; Be provided be used to the nut that screws on the described strengthening segment.
2. the end crab-bolt of cutting as claimed in claim 1, it is characterized in that, the described bed plate head of cutting comprises sleeve, the sleeve cylindrical is provided with several anti-projections of revolving, the sleeve lower end is provided with cuts bottom structure, and this is cut the barrel that bottom structure cuts apart the sleeve lower end by cracking seam and consists of, and cuts the bottom structure lower end and is provided with cutter tooth, cutter tooth is circumferentially uniform around sleeve axis, cuts bottom structure and is strutted the anti-structure of revolving of rear described cutter tooth incision mounting hole hole wall formation by cone nut.
3. the end crab-bolt of cutting as claimed in claim 2 is characterized in that, the described anti-projection of revolving is made into integration with sleeve.
4. the end crab-bolt of cutting as claimed in claim 2 is characterized in that, the barrel on described cutter tooth top with the radial contraction section with outstanding cutter tooth.
5. the end crab-bolt of cutting as claimed in claim 4 is characterized in that, described cutter tooth outer side surface band is conducive to cut the taper rib of mounting hole hole wall, and the inboard bottom of cutter tooth is with the chamfering that cooperates with cone nut.
6. the end crab-bolt of cutting as claimed in claim 2 is characterized in that, described sleeve is provided with on described cutter tooth top and discharges the annular groove that produces stress when expanding, and described cracking seam intersects with annular groove.
7. the end crab-bolt of cutting as claimed in claim 1 is characterized in that, described nut bottom is with flange, or pad is set below nut.
8. the end crab-bolt of cutting as claimed in claim 1 is characterized in that, is provided with hard material layer on the working surface of described cutter tooth.
9. the end crab-bolt of cutting as claimed in claim 8 is characterized in that, described hard material adopts diamond or cemented carbide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104747753A CN102966650A (en) | 2012-11-21 | 2012-11-21 | Strengthening type undercut anchor bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104747753A CN102966650A (en) | 2012-11-21 | 2012-11-21 | Strengthening type undercut anchor bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102966650A true CN102966650A (en) | 2013-03-13 |
Family
ID=47797004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104747753A Pending CN102966650A (en) | 2012-11-21 | 2012-11-21 | Strengthening type undercut anchor bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102966650A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105658965A (en) * | 2013-10-21 | 2016-06-08 | 喜利得股份公司 | Expansion anchor having an expansion sleeve having high strength in some regions |
| CN108221505A (en) * | 2016-12-12 | 2018-06-29 | 潘得路有限责任公司 | For the reducing fastener of railway track fastening assembly |
| CN112752909A (en) * | 2018-10-09 | 2021-05-04 | 喜利得股份公司 | Expansion anchor with raised area |
| RU2776396C2 (en) * | 2017-12-18 | 2022-07-19 | Хильти Акциенгезельшафт | Spacer anchor containing wide annular groove on spacer sleeve |
| US11920619B2 (en) | 2018-10-09 | 2024-03-05 | Hilti Aktiengesellschaft | Expansion anchor with forwards and rearwards grooves |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2161768Y (en) * | 1992-11-20 | 1994-04-13 | 陈国建 | Expansion bolt |
| CN2546680Y (en) * | 2002-07-01 | 2003-04-23 | 季育成 | Flat head inner expansion bolt |
| US20040096288A1 (en) * | 2001-04-12 | 2004-05-20 | Willi Haug | Method for producing an expansible anchor |
| US20040253075A1 (en) * | 2000-07-21 | 2004-12-16 | Heinrich Liebig | Undercut anchor element that can be mounted with positive engagement |
| WO2006135954A1 (en) * | 2005-06-21 | 2006-12-28 | Glen Altoft | A fastener |
| CN2869416Y (en) * | 2006-01-05 | 2007-02-14 | 马宁 | Expansion bolt |
| US20070172328A1 (en) * | 2006-01-26 | 2007-07-26 | Houck Joel M | Expansion anchor with crack-arresting groove |
| US20100212250A1 (en) * | 1998-12-01 | 2010-08-26 | Cobra Fixations Cie Ltee - Cobra Anchors Co. Ltd. | Wedge anchor for concrete |
| US20110038684A1 (en) * | 2009-08-17 | 2011-02-17 | Powers Fasteners, Inc. | Anchor Bolt |
| CN102052373A (en) * | 2009-10-27 | 2011-05-11 | 中国建筑科学研究院 | Nested tooth surface expansion pipe type expansion anchor bolt |
| CN102606586A (en) * | 2012-03-08 | 2012-07-25 | 刘平原 | Bolt sleeve with cutting structure at front end |
| CN202926786U (en) * | 2012-11-21 | 2013-05-08 | 刘平原 | Reinforced type undercut anchor bolt |
-
2012
- 2012-11-21 CN CN2012104747753A patent/CN102966650A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2161768Y (en) * | 1992-11-20 | 1994-04-13 | 陈国建 | Expansion bolt |
| US20100212250A1 (en) * | 1998-12-01 | 2010-08-26 | Cobra Fixations Cie Ltee - Cobra Anchors Co. Ltd. | Wedge anchor for concrete |
| US20040253075A1 (en) * | 2000-07-21 | 2004-12-16 | Heinrich Liebig | Undercut anchor element that can be mounted with positive engagement |
| US20040096288A1 (en) * | 2001-04-12 | 2004-05-20 | Willi Haug | Method for producing an expansible anchor |
| CN2546680Y (en) * | 2002-07-01 | 2003-04-23 | 季育成 | Flat head inner expansion bolt |
| WO2006135954A1 (en) * | 2005-06-21 | 2006-12-28 | Glen Altoft | A fastener |
| CN2869416Y (en) * | 2006-01-05 | 2007-02-14 | 马宁 | Expansion bolt |
| US20070172328A1 (en) * | 2006-01-26 | 2007-07-26 | Houck Joel M | Expansion anchor with crack-arresting groove |
| US20110038684A1 (en) * | 2009-08-17 | 2011-02-17 | Powers Fasteners, Inc. | Anchor Bolt |
| CN102052373A (en) * | 2009-10-27 | 2011-05-11 | 中国建筑科学研究院 | Nested tooth surface expansion pipe type expansion anchor bolt |
| CN102606586A (en) * | 2012-03-08 | 2012-07-25 | 刘平原 | Bolt sleeve with cutting structure at front end |
| CN202926786U (en) * | 2012-11-21 | 2013-05-08 | 刘平原 | Reinforced type undercut anchor bolt |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105658965A (en) * | 2013-10-21 | 2016-06-08 | 喜利得股份公司 | Expansion anchor having an expansion sleeve having high strength in some regions |
| US10018213B2 (en) | 2013-10-21 | 2018-07-10 | Hilti Aktiengesellschaft | Expansion anchor having a high-strength expansion sleeve in certain areas |
| CN108221505A (en) * | 2016-12-12 | 2018-06-29 | 潘得路有限责任公司 | For the reducing fastener of railway track fastening assembly |
| RU2776396C2 (en) * | 2017-12-18 | 2022-07-19 | Хильти Акциенгезельшафт | Spacer anchor containing wide annular groove on spacer sleeve |
| CN112752909A (en) * | 2018-10-09 | 2021-05-04 | 喜利得股份公司 | Expansion anchor with raised area |
| CN112752909B (en) * | 2018-10-09 | 2023-01-13 | 喜利得股份公司 | Expansion anchor with raised area |
| US11920619B2 (en) | 2018-10-09 | 2024-03-05 | Hilti Aktiengesellschaft | Expansion anchor with forwards and rearwards grooves |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102966650A (en) | Strengthening type undercut anchor bolt | |
| CN202926786U (en) | Reinforced type undercut anchor bolt | |
| CN209308041U (en) | A kind of soil nailing wall lever fixing apparatus | |
| CA2738182A1 (en) | Thread-tapping concrete screw | |
| CN106369031A (en) | Improved expansion bolt | |
| CN104481110B (en) | Back bolt | |
| CN104454865B (en) | A kind of back of the body bolt | |
| CN105710836A (en) | Stud detaching device | |
| CN106523498A (en) | Detachable expansion bolt sleeve part capable of being used repeatedly | |
| CN205663725U (en) | Nut | |
| CN202108834U (en) | Novel combined integral bolt | |
| CN109973484A (en) | A kind of novel self undercut anchor | |
| CN104919129A (en) | Drill string components resistant to jamming | |
| CN206111782U (en) | Bolt of connecting fastening | |
| CN204127051U (en) | Tripod telescopic pipe interlock assembly | |
| CN208734359U (en) | A kind of hollow screw grouting and reinforcing anchor pole | |
| CN104028335B (en) | A kind of anti-slip type pressure roller | |
| CN203409368U (en) | Multi-functional beveling machine | |
| CN104033468A (en) | Anti-dropping bolt | |
| CN209855729U (en) | Dry type drilling orifice dust removing device for underground coal mine | |
| CN209925385U (en) | Novel self-cutting bottom anchor bolt | |
| CN206035979U (en) | Expansion bolt | |
| CN210715466U (en) | Detachable and reusable expansion bolt | |
| CN204343616U (en) | A kind of back of the body bolt | |
| CN211172726U (en) | Threaded steel sleeve for quick fastening connection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130313 |