CN110004928A - It is a kind of to expand body anti-float anchor rod certainly - Google Patents
It is a kind of to expand body anti-float anchor rod certainly Download PDFInfo
- Publication number
- CN110004928A CN110004928A CN201910354271.XA CN201910354271A CN110004928A CN 110004928 A CN110004928 A CN 110004928A CN 201910354271 A CN201910354271 A CN 201910354271A CN 110004928 A CN110004928 A CN 110004928A
- Authority
- CN
- China
- Prior art keywords
- anchor rod
- nut
- float anchor
- body anti
- mobile jib
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
- E02D31/12—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/80—Ground anchors
- E02D5/801—Ground anchors driven by screwing
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/80—Ground anchors
- E02D5/803—Ground anchors with pivotable anchoring members
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/30—Miscellaneous comprising anchoring details
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention discloses a kind of from expansion body anti-float anchor rod, it is related to construction engineering technical field, described from body anti-float anchor rod is expanded is pressure-bearing type from enlarging anchor rod, including mobile jib, expand body anchoring mechanism and actuator, expand body anchoring mechanism to be located on mobile jib, actuator covers on expanding body anchoring mechanism, and actuator driving expands body anchoring mechanism and radially opens and move axially to carry out reaming movement along mobile jib.The present invention drives expansion body anchoring mechanism to radially expand and move axially along mobile jib to carry out reaming movement by actuator, to widen the aperture of deep hole, reaming accurate positioning, shape is fixed.Certainly expansion body anti-floating anchor rod structure of the invention is simple and convenient to operate, anti-floating effect is good.
Description
Technical field
The present invention relates to construction engineering technical fields, more particularly to a kind of from expansion body anti-float anchor rod.
Background technique
Increasingly developed with national economy, urban construction is implemented on a large scale.In order to sufficiently develop and use the underground space, adopt
Embedding underground structure is used gradually to increase as functions such as garages, as executive information systems emerge in large numbers, foundation is increasingly
It is deep.It is big for underground structure construction area, embedded depth of foundation is deeper, building storey relatively fewer situation works as level of ground water
When higher, building structure, which is self-possessed, is insufficiently resistant to the buoyancy of underground water.Therefore it needs to resist underground water using anti-float anchor rod
To building bring buoyancy.
In order to improve the bearing capacity of anti-float anchor rod, usually expand the volume of bolthole, common high pressure water flushing in anchoring section
The void shape that brush ground or blasting method are formed specification or declines the mechanics parameter of ground ontology.Research and develop novel anchor
Tool improves the security protection and reinforcement ability of anchorage, and reduces construction material and equipment loss, economy with higher.
Summary of the invention
The purpose of the present invention is to provide a kind of from body anti-float anchor rod is expanded, can be radially expanded in the datum hole dug in advance with into
Row reaming movement, reaming accurate positioning, shape are fixed, and structure is simple and convenient to operate, anti-floating effect is good.
To achieve the above object, the invention adopts the following technical scheme:
A kind of described from body anti-float anchor rod is expanded is pressure-bearing type from enlarging anchor rod from expanding body anti-float anchor rod, including mobile jib, is expanded
Body anchoring mechanism and actuator expand body anchoring mechanism and are located on mobile jib, and actuator covers on expanding body anchoring mechanism, actuator driving
Expand body anchoring mechanism radially to open and move axially to carry out reaming movement along mobile jib.
Further, the expansion body anchoring mechanism includes top nut and lower nut, the hinged several upper reamer arms of top nut,
Hingedly several reaming arms, upper reamer arm and reaming arm correspond articulated connection to lower nut.
Further, the top nut includes nut body and several hinged seats for being fixedly arranged on nut body circumferential surface, hinge
Joint chair is equipped with hinge hole；The shape of the lower nut and the shape of top nut are identical.
Further, the actuator includes casing and driving portion, and when casing abuts top nut, driving portion is covered in upper spiral shell
Female outer, then driving portion pushes hinged seat to rotating casing, so that top nut be driven to rotate.
Further, the driving portion is the claw clip being distributed in outside casing, and claw clip is covered outside top nut, claw clip it is every
A clamping jaw is located between adjacent two hinged seat of top nut.
Further, the both ends of the upper reamer arm and both reaming arms are equipped with pin hole, upper reamer arm with it is upper
It is realized and is articulated and connected by bolt between nut, reaming arm and lower nut, upper reamer arm and reaming arm.
Further, between the top nut and lower nut be equipped with a spring, both ends of the spring push respectively top nut and
Lower nut, make reamer arm and reaming arm to centre collapse, with reduce from expand body anti-float anchor rod whole cross section, so as to
It will smoothly be transferred from body anti-float anchor rod is expanded to designated position before reaming.
Further, described further includes screwed pipe from body anti-float anchor rod is expanded, and screwed pipe is fixedly connected with mobile jib lower end, spiral shell
Line pipe outer circumference surface is equipped with external screw thread compatible with the internal screw thread of top nut and lower nut, expands body anchoring mechanism in actuator
Under the action of threadingly pipe move up or move down.
Further, the screwed pipe top is guide section, and the outer surface of guide section is smooth periphery, guide section
Screwed pipe top is extended to, screwed pipe top is equipped with to expand body anchoring mechanism and be smoothly snapped down to screwed pipe guide section from mobile jib
Chamfering.
Further, the mobile jib is fining twisted steel, and described is equipped with loading plate from expansion body anti-float anchor rod bottom end, is held
Support plate is fixedly connected by welding with screwed pipe and/or mobile jib.
The present invention drives expansion body anchoring mechanism radially to open and move axially along mobile jib to expand by actuator
Hole movement, to widen the aperture of datum hole.Actuator end is basseted always, so as to operator can ground easily into
Row ream operation.Of the invention is simple and convenient to operate from expansion body anti-floating anchor rod structure, and reaming accurate positioning, shape are fixed, anti-floating
Effect is good.
Detailed description of the invention
Fig. 1 is by schematic diagram when being put into datum hole from expansion body anti-float anchor rod；
Fig. 2 is the schematic diagram tentatively opened in datum hole from expansion body anti-float anchor rod；
Fig. 3 is from expansion body anti-float anchor rod reaming schematic diagram；
Fig. 4 is the schematic diagram of extraction actuator after the completion of reaming；
Fig. 5 is from the decomposition diagram for expanding body anti-float anchor rod；
Fig. 6 is the schematic diagram of top nut；
Fig. 7 is the schematic diagram of actuator.
Specific embodiment
Now in conjunction with the drawings and specific embodiments, the invention will be further described.
Fig. 5 to Fig. 7 is please referred to, the present invention discloses a kind of expansion body anti-float anchor rod certainly, should be from body anti-float anchor rod is expanded for pressure-bearing type
From enlarging anchor rod, including mobile jib 1, expansion body anchoring mechanism 3 and actuator 4, expands body anchoring mechanism 3 and be located on mobile jib 1, actuator 4
Cover expand body anchoring mechanism 3 on, actuator 4 driving expand body anchoring mechanism 3 radially opens and along mobile jib 1 axial movement thus
Carry out reaming movement.
Please refer to Fig. 5 and Fig. 6, expanding body anchoring mechanism 3 includes top nut 31 and lower nut 32, top nut 31 it is hinged it is several on
Reamer arm 33, the hinged several reaming arms 34 of lower nut 32, upper reamer arm 33 and reaming arm 34 correspond articulated connection.
Referring to Fig. 6, preferably, the shape of lower nut 32 is identical as the shape of top nut 31.Top nut 31 includes nut
Ontology and several hinged seats for being fixedly arranged on nut body circumferential surface, hinged seat and nut body are integrally formed.In the present embodiment, it cuts with scissors
The quantity of joint chair is preferably 3, and each hinged seat is circumferentially uniformly distributed along nut body.Hinged seat includes two pieces of parallel opposite seats
Plate 311, each seat board 311 are equipped with two hinge holes up and down, and two upper hinge holes 312 are coaxial, and two lower hinge holes 313 are same
Axis.
As shown in figure 5, upper reamer arm 33 and the quantity of reaming arm 34 are 3.Upper reamer arm 33 and reaming arm 34
Both ends be equipped with pin hole, upper reamer arm 33 and top nut 31, reaming arm 34 and lower nut 32, upper reamer arm 33 and lower expansion
Hole arm 34 is realized by bolt and is articulated and connected.Specifically, upper reamer arm 33 is realized hinged with top nut 31 by bolt
The lower hinge hole 313 of seat connects, and reaming arm 34 is realized by bolt to be connected with the upper hinge hole 312 of the hinged seat of lower nut 32
It connects.
As shown in fig. 7, actuator 4 includes casing 41 and driving portion 42, driving portion 42 is the claw clip being distributed in outside casing 41.
Claw clip in the present embodiment is three claw clips, and when casing 41 abuts top nut 31, three-jaw collet is outside top nut 31, three-jaw
Each clamping jaw of folder is located between adjacent two hinged seat of top nut 31.Rotating casing 41, then three clamping jaws push hinge
Joint chair so that top nut 31 be driven to rotate, that is, drives the entire body anchoring mechanism 3 that expands to rotate.It is understood that driving portion 42
Clamping jaw quantity can be adjusted according to actual needs, as long as can push expand body anchoring mechanism 3 rotate, preferably along expand
Body anchoring mechanism is circumferentially uniformly distributed.
It in the present embodiment, further include screwed pipe 2 from body anti-float anchor rod is expanded, screwed pipe 2 is fixedly connected with 1 lower end of mobile jib,
2 outer circumference surface of screwed pipe is equipped with external screw thread compatible with the internal screw thread of top nut 31 and lower nut 32, expands body anchoring mechanism
Threadingly pipe 2 is moved up or is moved down under the action of actuator 4.
As shown in figure 5, in the present embodiment, being equipped with loading plate 5 from body anti-float anchor rod bottom end is expanded, loading plate 5 passes through welding
It is fixedly connected with screwed pipe 2 and/or mobile jib 1.In the present embodiment, it is preferred that mobile jib 1 is fining twisted steel, 2 upper end of screwed pipe
Equipped with internal thread hole compatible with fining twisted steel, screwed pipe 2 is fixedly connected by screw thread with fining twisted steel, screwed pipe 2
Lower end is welded and fixed with loading plate 5.In other embodiments, screwed pipe 2 can also be arranged to hollow screwed pipe, mobile jib 1
Lower end passes through screwed pipe 2 and is fixedly connected with loading plate 5, and loading plate 5 is welded and fixed with 2 bottom face of screwed pipe simultaneously.It is understood that
, in other embodiments, mobile jib and screwed pipe can be arranged to integrally formed structure, or by setting on mobile jib
Screw thread is set to replace the screwed pipe of the present embodiment.
In the present embodiment, 2 top of screwed pipe is equipped with the guide section 21 that moves up and down for top nut 31, guide section 21 it is outer
Surface is smooth periphery, and guide section 21 extends to 2 top of screwed pipe, and 2 top of screwed pipe, which is equipped with, is convenient for top nut 31 from master
Bar 1 is smoothly snapped down to the chamfering of 2 guide section 21 of screwed pipe.
As shown in Figure 3 and Figure 5, in the present embodiment, between top nut 31 and lower nut 32 be equipped with a spring 6,6 liang of spring
End pushes top nut 31 and lower nut 32 respectively, to make reamer arm 33 and reaming arm 34 collapse to centre, to reduce certainly
Expand the whole cross section of body anti-float anchor rod, will smoothly to transfer from body anti-float anchor rod is expanded to designated position before reaming, i.e., just
Just it puts it into the deep hole dug.
The present invention works as follows:
(1) as shown in Figure 1, being put into body anchoring mechanism 3 is expanded in the pre- deep hole being drilled, the three-jaw collet of actuator 4 is existed
The bottom end in the outside of top nut 31, actuator 4 is abutted with top nut 31, and the upper end dew of actuator 4 is on the ground.
(2) as shown in Fig. 2, operator on the ground presses actuator 4 straight down, spring 6 is compressed, upper reamer arm
33 and 34 opened with certain angle of reaming arm.Expand 3 lower section of body anchoring mechanism there are space, soil will fall off to expansion body anchoring mechanism
In the hole of 3 lower sections.
(3) as shown in figure 3, fining twisted steel is fixed, rotating drive part 4, actuator 4 drives entire expansion body anchoring mechanism
3 move down along screwed pipe 2, until top nut 31 is also screwed on the screw thread of screwed pipe 2.It has fixed at this time and has expanded body angle,
Rotary drive 4 again can make expansion body anchoring mechanism 3 do reaming movement.
(4) as shown in figure 4, after the completion of reaming, actuator 4 is extracted, locks after maintenance, then carries out slip casting.
It should be noted that reaming effect is best, lower expansion at this time when upper reamer arm 33 and the angle of screwed pipe 2 are in 45 °
Hole arm 34 is overturn to horizontal position.If soil is really up to the mark, expanding body anchoring mechanism 3 cannot open completely, and expanding body anchoring mechanism 3 will
In drum type.
The foregoing descriptions are merely the embodiment using this origination techniques content, any those skilled in the art use this wound
Make done modifications and changes, all belong to the scope of the patents of this creation opinion, and is not limited to those disclosed embodiments.
Claims (10)
1. a kind of expand body anti-float anchor rod certainly, it is characterised in that: described is pressure-bearing type from enlarging anchor rod from body anti-float anchor rod is expanded, and is wrapped
It including mobile jib, expands body anchoring mechanism and actuator, expand body anchoring mechanism and be located on mobile jib, actuator covers on expanding body anchoring mechanism,
Actuator driving expands body anchoring mechanism and radially opens and move axially to carry out reaming movement along mobile jib.
2. according to claim 1 from expansion body anti-float anchor rod, it is characterised in that: the expansion body anchoring mechanism includes upper spiral shell
Female and lower nut, the hinged several upper reamer arms of top nut, the hinged several reaming arms of lower nut, upper reamer arm and reaming arm one
One corresponding articulated connection.
3. it is according to claim 2 from expand body anti-float anchor rod, it is characterised in that: the top nut include nut body and
Several hinged seats of nut body circumferential surface are fixedly arranged on, hinged seat is equipped with hinge hole；The shape and top nut of the lower nut
Shape it is identical.
4. according to claim 3 from expansion body anti-float anchor rod, it is characterised in that: the actuator includes casing and driving
Portion, when casing abuts top nut, driving portion covers outside top nut, and then driving portion pushes hinged seat to rotating casing, thus on driving
Nut rotation.
5. according to claim 4 from expansion body anti-float anchor rod, it is characterised in that: the driving portion is to be distributed in outside casing
Claw clip, claw clip is covered outside top nut, each clamping jaw of claw clip is located between adjacent two hinged seat of top nut.
6. according to claim 2 from expansion body anti-float anchor rod, it is characterised in that: the upper reamer arm and reaming arm two
The both ends of person are equipped with pin hole, between upper reamer arm and top nut, reaming arm and lower nut, upper reamer arm and reaming arm
It is realized and is articulated and connected by bolt.
7. according to claim 2 from expansion body anti-float anchor rod, it is characterised in that: set between the top nut and lower nut
There is a spring, both ends of the spring pushes top nut and lower nut respectively, collapses reamer arm and reaming arm to centre, to reduce
From the whole cross section for expanding body anti-float anchor rod, will smoothly to be transferred from body anti-float anchor rod is expanded to designated position before reaming.
8. according to claim 2 from expanding body anti-float anchor rod, it is characterised in that: described to further include from expanding body anti-float anchor rod
Screwed pipe, screwed pipe are fixedly connected with mobile jib lower end, and screwed pipe outer circumference surface is equipped with the internal screw thread with top nut and lower nut
Compatible external screw thread, expanding body anchoring mechanism, threadingly pipe is moved up or is moved down under the action of actuator.
9. according to claim 8 from expansion body anti-float anchor rod, it is characterised in that: the screwed pipe top is guide section,
The outer surface of guide section is smooth periphery, and guide section extends to screwed pipe top, and screwed pipe top is equipped with to expand body anchor
Gu mechanism is smoothly snapped down to the chamfering of screwed pipe guide section from mobile jib.
10. from expansion body anti-float anchor rod according to claim 8 to 9 any one, it is characterised in that: the mobile jib is essence
Screw-thread steel is rolled, described is equipped with loading plate from expansion body anti-float anchor rod bottom end, and loading plate is consolidated by welding and screwed pipe and/or mobile jib
Fixed connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910354271.XA CN110004928A (en) | 2019-04-29 | 2019-04-29 | It is a kind of to expand body anti-float anchor rod certainly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910354271.XA CN110004928A (en) | 2019-04-29 | 2019-04-29 | It is a kind of to expand body anti-float anchor rod certainly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110004928A true CN110004928A (en) | 2019-07-12 |
Family
ID=67174983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910354271.XA Pending CN110004928A (en) | 2019-04-29 | 2019-04-29 | It is a kind of to expand body anti-float anchor rod certainly |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111226809A (en) * | 2020-01-19 | 2020-06-05 | 汤继东 | Stake for livestock and using method |
| CN111335325A (en) * | 2020-03-05 | 2020-06-26 | 信息产业部电子综合勘察研究院 | Deep foundation pit supporting structure |
| CN112523209A (en) * | 2020-11-25 | 2021-03-19 | 中国建筑第五工程局有限公司 | Anchoring connector for anchor rod |
| CN113417285A (en) * | 2021-08-05 | 2021-09-21 | 宝业湖北建工集团有限公司 | Local reaming is from anchor type soil nail for excavation supporting |
| CN114182741A (en) * | 2021-11-16 | 2022-03-15 | 山东省高速养护集团有限公司 | Method for reinforcing roadbed slope by tension-compression composite type enlarged footing anchor rod |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202767074U (en) * | 2012-05-09 | 2013-03-06 | 罗强 | Pressurized soil anchor reamer |
| CN103741687A (en) * | 2014-01-27 | 2014-04-23 | 北方工业大学 | Reaming pressure dispersion type anchor rod |
| CN103953038A (en) * | 2014-04-18 | 2014-07-30 | 湖北省电力勘测设计院 | Multi-branch large-displacement expansion anchor head fiber rib anchor rod for medium and strong weathered rock formations |
| CN204080803U (en) * | 2014-09-22 | 2015-01-07 | 华汇工程设计集团股份有限公司 | A kind of callable expansion head anchor pole |
| CN209958355U (en) * | 2019-04-29 | 2020-01-17 | 中国京冶工程技术有限公司厦门分公司 | Self-expanding anti-floating anchor rod |
-
2019
- 2019-04-29 CN CN201910354271.XA patent/CN110004928A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202767074U (en) * | 2012-05-09 | 2013-03-06 | 罗强 | Pressurized soil anchor reamer |
| CN103741687A (en) * | 2014-01-27 | 2014-04-23 | 北方工业大学 | Reaming pressure dispersion type anchor rod |
| CN103953038A (en) * | 2014-04-18 | 2014-07-30 | 湖北省电力勘测设计院 | Multi-branch large-displacement expansion anchor head fiber rib anchor rod for medium and strong weathered rock formations |
| CN204080803U (en) * | 2014-09-22 | 2015-01-07 | 华汇工程设计集团股份有限公司 | A kind of callable expansion head anchor pole |
| CN209958355U (en) * | 2019-04-29 | 2020-01-17 | 中国京冶工程技术有限公司厦门分公司 | Self-expanding anti-floating anchor rod |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111226809A (en) * | 2020-01-19 | 2020-06-05 | 汤继东 | Stake for livestock and using method |
| CN111226809B (en) * | 2020-01-19 | 2022-06-14 | 山东筑安农牧科技股份有限公司 | Stake for livestock and using method |
| CN111335325A (en) * | 2020-03-05 | 2020-06-26 | 信息产业部电子综合勘察研究院 | Deep foundation pit supporting structure |
| CN111335325B (en) * | 2020-03-05 | 2021-07-20 | 信息产业部电子综合勘察研究院 | Deep foundation pit supporting structure |
| CN112523209A (en) * | 2020-11-25 | 2021-03-19 | 中国建筑第五工程局有限公司 | Anchoring connector for anchor rod |
| CN113417285A (en) * | 2021-08-05 | 2021-09-21 | 宝业湖北建工集团有限公司 | Local reaming is from anchor type soil nail for excavation supporting |
| CN114182741A (en) * | 2021-11-16 | 2022-03-15 | 山东省高速养护集团有限公司 | Method for reinforcing roadbed slope by tension-compression composite type enlarged footing anchor rod |
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