CN110004926A - A kind of fluid pressure type anchor rod prestress stops loss device - Google Patents
A kind of fluid pressure type anchor rod prestress stops loss device Download PDFInfo
- Publication number
- CN110004926A CN110004926A CN201910320882.2A CN201910320882A CN110004926A CN 110004926 A CN110004926 A CN 110004926A CN 201910320882 A CN201910320882 A CN 201910320882A CN 110004926 A CN110004926 A CN 110004926A
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- Prior art keywords
- piston
- cylinder barrel
- piston rod
- pressure spring
- prestress
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- 239000012530 fluid Substances 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 32
- 239000010959 steel Substances 0.000 claims abstract description 32
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003208 petroleum Substances 0.000 claims abstract description 7
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 description 19
- 238000004873 anchoring Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000010720 hydraulic oil Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0046—Production methods using prestressing techniques
Landscapes
- 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)
- Piles And Underground Anchors (AREA)
Abstract
A kind of fluid pressure type anchor rod prestress stops loss device, has hydraulic hand-pump, cylinder barrel, piston, piston rod, pressure spring, positioning sleeve, the several casings passed through for steel strand wires from its centre bore.Each described sleeve pipe penetrates hole also cross penetrating on hole and piston and piston rod on the pedestal of cylinder barrel respectively, each casing is fixedly connected with the pedestal of cylinder barrel, piston and piston rod are sleeved on several casings and clearance fit therewith, pressure spring is set on the outer circumference surface of piston rod, one end of pressure spring is by piston limit, the other end of pressure spring is limited by positioning sleeve, positioning sleeve is located between the inner wall and piston rod of cylinder barrel and is fixed on the inner wall of cylinder barrel, the outboard end of cylinder barrel has the shaft shoulder notch i.e. variable cross-section notch for limiting engineering anchorage, the oil nozzle of the side bottom end of the oil transportation mouth and cylinder barrel of the petroleum pipeline of hydraulic hand-pump is connected.The problem of present invention is economical and practical, easy to operate, is avoided that loss of prestress and multi beam steel strand wires discontinuity equalization after anchor pole tensioning fixation.
Description
Technical field
The present invention relates to a kind of anchor rod prestress to stop loss device, in particular to a kind of fluid pressure type anchor rod prestress stops loss dress
It sets, is the prestressed anchor tensioning fixation device for pattern foundation pit supporting structure and geotechnical slope field of reinforcement.
Background technique
The self-locking anchorage for generally mostly using OVM series in pattern foundation pit supporting structure at present, because of anchor pole caused by its tensioning fixation technique
Tensioning fixation after prestressing force have different degrees of loss, and be difficult to avoid that.Required of design is not achieved in latching force
Zipper definite value brings serious security risk to foundation pit.
Anchor pole tensioning fixation process are as follows: after equipment and tool installation, jack pressure, the outer shifting (flexible deformation) of anchor pole,
Engineering anchoring clamping piece can be moved with outside anchor pole.Engineering anchoring clamping piece is mobile, stops movement at limiter (limiting device), and anchor pole is lasting
Outer shifting, engineering anchoring clamping piece stop it is mobile when being forced into predetermined value, when hydraulic jack unloads, anchor pole with engineering anchoring clamping piece back
Mobile, when engineering anchoring clamping piece, which is moved to, to be contacted with the internal taper hole of work anchor, the internal tooth of intermediate plate starts to be embedded in steel strand wires, anchor
Bar stops movement, and tensioning finishes.
Loss of prestress concentrates on limiting device in stretching process, and (1) is when the concave surface of limiting device is relative to intermediate plate
For it is shallow when, in tensioning, limit plate has withstood intermediate plate, makes intermediate plate that can not fully loosen and clamp anchor cable, thus makes
A part of power loss wrapping to anchor cable in intermediate plate, makes the internal tooth of intermediate plate cause to wear when serious.(2) when limiting device
Concave surface for intermediate plate " just " or it is too deep when, when unloading, can generate different degrees of loss, the elastical retraction of anchor pole
It is the main reason for generating the loss of anchor cable lock value.(3) when porous anchor is constructed, intermediate plate is difficult to uniformly place, and makes anchor pole in bullet
Property retraction when each beam steel strand wires amount of recovery it is not of uniform size, lead to each beam steel strand wires discontinuity, give the larger list Shu Gang of stress
Twisted wire causes to bear.
Inventor retrieves following Patents documents: CN207974109U disclose a kind of reduction prestressed anchor
The composite structure of zipper timing stress loss；Including anchor pole, a part of anchor pole is protruded into Rock And Soil in preset anchor cable hole, institute
The part for stating anchor pole exposing Rock And Soil is arranged with moveable anchor and work anchor, and the work anchor is close to Rock And Soil, work anchor and ground
Bearing plate is provided between body, the interior of moveable anchor is equipped with A intermediate plate, and the interior of work anchor is equipped with B intermediate plate, and A intermediate plate and B intermediate plate are set in
The outside of anchor pole；Hydraulic jack is provided between the moveable anchor and work anchor, hydraulic jack is equipped with reversal valve and two
Piston, respectively outer piston and inner piston.CN205778954U discloses a kind of anchor rod prestress straining device, including pneumatic oil
Pump, oil cylinder and limit card slot, oil outlet, the oil inlet of the Pneumatic oil pump are connected with the oil inlet of oil cylinder, oil outlet respectively,
The cylinder block is fixedly connected with limit card slot, and the piston end of oil cylinder stretches in limit card slot, and the piston end of oil cylinder is set
It is equipped with tensioning nut.
The above technology for how to make anchor rod prestress stop loss device accomplish it is economical and practical, it is easy to operate, be avoided that
Loss of prestress and the problem of multi beam steel strand wires discontinuity equalization after anchor pole tensioning fixation, does not provide specific guidance program.
Summary of the invention
Technical problem to be solved by the present invention lies in, a kind of fluid pressure type anchor rod prestress is provided and stops loss device, the anchor pole
It is economical and practical that prestressing force stops loss device, easy to operate, be avoided that after anchor pole tensioning fixation loss of prestress and multi beam steel strand wires by
The unbalanced problem of power.
In order to solve the above technical problems, technical solution to be taken of the invention is as follows:
A kind of fluid pressure type anchor rod prestress stops loss device, has hydraulic hand-pump (hand-rail type hydraulic pump), its technical solution is that
The fluid pressure type anchor rod prestress, which stops loss device also, has cylinder barrel (cylinder body), piston, piston rod, the pressure spring (reset of oil extraction
Spring), positioning sleeve, with steel strand wires corresponding several casings passed through from its centre bore for steel strand wires one by one, the bottom of cylinder barrel
On seat, all have on piston and piston rod along the axis direction of piston and penetrate hole for installing the several of described sleeve pipe, each
Described sleeve pipe penetrates penetrating on hole and piston and piston rod also cross on the pedestal of cylinder barrel corresponding thereto respectively
Hole, each described sleeve pipe are fixedly connected with the pedestal of cylinder barrel, and piston and piston rod are sleeved on several casings and gap therewith
Cooperation, piston and piston rod can be set with pressure spring on several cannula slides, the outer circumference surface of piston rod, one end of pressure spring by
The other end of piston limit, pressure spring is limited by positioning sleeve, and positioning sleeve is located between the inner wall and piston rod of cylinder barrel and is fixed on cylinder
On the inner wall of cylinder, the outboard end of cylinder barrel has shaft shoulder notch i.e. variable cross-section notch (the engineering anchorage limit for limiting engineering anchorage
Place), the oil nozzle of the side bottom end of the oil transportation mouth and cylinder barrel of the petroleum pipeline of hydraulic hand-pump is connected.The purpose of several casings is set
It is that the hydraulic oil for preventing and (entering in cylinder barrel) is contacted with steel strand wires, the centre bore of casing is that steel strand wires penetrate hole.When work,
When drawing jack tension to predetermined value, stop tensioning, starting originally stops loss device, fastens relief valve, starts to pressurize, hydraulic oil passes through
Petroleum pipeline enters cylinder barrel jacking piston, and piston rod rises, and the top of piston rod is as lifting face by low-bit line (initial position line)
In high bit line, intermediate plate is embedded in steel strand wires, stops pressurization, unclamps relief valve, returns to initial position by pressure spring band piston, this
Device work is stopped loss to complete.
In above-mentioned technical proposal, preferred scheme may is that the casing quantity can for two (or two with
On).It is also two (or more than two) that steel strand wires, which penetrate the quantity in hole, in this way.The top of the piston rod is as lifting face
When in low-bit line, that is, initial position line, the outboard end (right-hand end) of the low-bit line and each casing is preferably mutually neat.Described
The depth H of variable cross-section notch is preferably 10 ~ 15mm, when the top of piston rod is in high bit line as lifting face, the high bit line
The distance between the bottom surface of variable cross-section notch h is preferably 5 ~ 10mm.
Conventional limit device is replaced with fluid pressure type anchor rod prestress and stops loss device by the present invention, and jack is applied to predetermined value
Afterwards, starting fluid pressure type anchor rod prestress stops loss device, slowly pressurizes, until terminating pressurization, tensioning lock in intermediate plate insertion steel strand wires
Fixed work is completed.Fluid pressure type anchor rod prestress stops loss device and solves loss of prestress (latching force damage after anchor pole tensioning and locking
Lose) and the problem of multi beam steel strand wires discontinuity equalization, can be used for single hole and porous anchor tensioning and locking, the present invention is only with 2 holes
For anchorage, it constructs suitable for various porous anchors.
It is answered in advance after tensioning fixation the beneficial effects of adopting the technical scheme are that the present invention can effectively avoid
The problem of power loss and multi beam steel strand wires discontinuity equalization.Locking loss is maximum one kind in anchor rod prestress loss, conventional
The loss of prestress of tensioning fixation technique generally 15%~30%, sometimes even 40%~80%, conventional tensioning fixation technique one
Latching force is usually inadequate after secondary tensioning, is also often difficult to meet design requirement after two times tensioning, is stopped using hydraulic anchor prestressing force
Loss of prestress is can be controlled within 5% after damage device, and the tension process one made after device is stopped loss using fluid pressure type anchor rod prestress
Secondary property is completed, easy for construction；Because to stop loss device all intermediate plates when promoting intermediate plate vertical along steel strand wires for fluid pressure type anchor rod prestress
Direction balances propulsion together, and locks, and there is no each beam steel strand wires retraction unevenness, so as to avoid steel strand wires discontinuity equalization
Problem；The price of limit plate is about 100~200 yuan, and hydraulic anchor prestressing force stops loss about 500 yuan of device cost of manufacture or so, can
Recycling, energy-saving effect are significant.Meanwhile the configuration of the present invention is simple, reliable operation, compared with existing the relevant technologies, the present invention
The service life of steel strand wires is set to extend 50% or more.
In conclusion the present invention is economical and practical, easy to operate, it is avoided that loss of prestress and multi beam steel strand after anchor pole tensioning fixation
The problem of line discontinuity equalization.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of (one embodiment) of the invention.
Fig. 2 is that the top of piston rod in the present invention is in high bit line by low-bit line (initial position line) 301 as lifting face
Structural schematic diagram when 302.
Fig. 3 be Fig. 2 in B to partial view.
Fig. 4 is to invent the structural schematic diagram of A when in use.
Specific embodiment
As shown in Figure 1, Figure 2, Figure 3, Figure 4, fluid pressure type anchor rod prestress of the invention stops loss device with hydraulic hand-pump
(hand-rail type hydraulic pump) 1, cylinder barrel (cylinder body) 2, piston 3, piston rod 3 ', pressure spring (reset spring of oil extraction) 4, positioning sleeve 5, with
Steel strand wires corresponding several casings 7 passed through from its centre bore 6 for steel strand wires one by one.Hydraulic hand-pump 1 has petroleum pipeline
101, relief valve 102, fuel feed hole (oil filler point) and exhaust valve 103.On the pedestal 201 of cylinder barrel 2, on piston 3 and piston rod 3 '
Along the axis direction of piston all have for described sleeve pipe is installed it is several penetrate hole, each described sleeve pipe 7 respectively also cross
Penetrating on hole and piston and piston rod on the pedestal of cylinder barrel corresponding thereto penetrates hole, each described sleeve pipe 7 and cylinder
The pedestal 201 of cylinder is fixedly connected, and piston 3 and piston rod 3 ' are sleeved on several casings 7 and clearance fit therewith, piston 3 with
And piston rod 3 ' can be slided along several casings (left and right).Pressure spring 4, one end of pressure spring 4 are set on the outer circumference surface of piston rod 3 '
It is limited by piston 3, the other end of pressure spring 4 is limited by positioning sleeve 5, and positioning sleeve 5 is located between the inner wall and piston rod 3 ' of cylinder barrel 2 simultaneously
It being fixed on the inner wall of cylinder barrel 2, the outboard end of cylinder barrel 2 has the shaft shoulder notch i.e. variable cross-section notch 203 for limiting engineering anchorage,
The namely engineering anchorage spacing place of variable cross-section notch 203, the oil transportation mouth of the petroleum pipeline 101 of hydraulic hand-pump and the side bottom of cylinder barrel
The oil nozzle 202 at end is connected.The purpose that several casings 7 are arranged is to prevent from hydraulic oil from contacting with steel strand wires (this hair after casing to be arranged
The service life of bright reliable operation, steel strand wires is extended), the centre bore 6 of casing is that steel strand wires penetrate hole.When work,
When drawing jack tension to predetermined value, stop tensioning, starting originally stops loss device, fastens relief valve, starts to pressurize, hydraulic oil passes through
Petroleum pipeline 101 enters cylinder barrel and jacks piston, and piston rod rises, and the top of piston rod is as lifting face by low-bit line (initial position
Line) 301 be in high bit line 302, intermediate plate be embedded in steel strand wires 7 ' it is interior, stop pressurization, unclamp relief valve 102, by pressure spring band piston
Initial position is returned to, device work is originally stopped loss and completes.The quantity of above-mentioned casing 7 is two (or being more than two).In this way
The quantity that steel strand wires penetrate hole is two (or being more than two).The top of the piston rod 3 ' is in low as lifting face
When bit line 301 is initial position line, outboard end (right-hand end) Xiang Qi of the low-bit line 301 and each casing 7.The change is cut
The depth H of face notch 203 is that 10 ~ 15mm(selects 15mm), when the top of piston rod 3 ' is in high bit line 302 as lifting face,
The distance between the high bit line 302 and the bottom surface of variable cross-section notch 203 h are that 5 ~ 10mm(selects 10mm).
When of the invention, after reaching tensioning condition, installing engineering anchorage 8 and engineering anchoring clamping piece 9 install hydraulic anchor of the invention
Bar prestressing force stops loss device A, is placed in variable cross-section notch (engineering anchorage spacing place) 203 on engineering anchorage 2, at this time hydraulic anchor
The top that prestressing force stops loss the piston rod of device is in low-bit line (initial position line) 301 as lifting face, and installation tensioning is very heavy
Tension tool anchor 11 is installed on top 10, is adjusted all mounting devices and is guaranteed, locking tool anchoring clamping piece concentric with anchor pole center line
12, stretch-draw jack 10 starts tensioning, stops tensioning when reaching predetermined value, and starting hydraulic anchor prestressing force stops loss device A, pressurizes
The top of the piston rod is set to be in high bit line 302 by low-bit line 301 as lifting face, later, hydraulic anchor prestressing force stops loss
Low-bit line 301 is down to by high bit line 302 as lifting face in the top of device pressure release, the piston rod automatically, (single hydraulic dress of oil circuit
Oil cylinder after can be set to pressure release is set to retract automatically), 10 pressure release of stretch-draw jack, remove except engineering anchorage 8 and engineering anchoring clamping piece 9 it
Outer device, all operations are completed.
The configuration of the present invention is simple, reliable operation, compared with existing the relevant technologies, the present invention prolongs the service life of steel strand wires
Grow 50% or more.
In conclusion the present invention is economical and practical, easy to operate, loss of prestress and multi beam steel strand after anchor pole tensioning fixation are avoided
The problem of line discontinuity equalization.
Claims (4)
1. a kind of fluid pressure type anchor rod prestress stops loss device, have hydraulic hand-pump (1), it is characterised in that the hydraulic anchor
Bar prestressing force, which stops loss device also, has cylinder barrel (2), piston (3), piston rod (3 '), pressure spring (4), positioning sleeve (5) and steel strand wires one
The one corresponding several casings (7) passed through from its centre bore (6) for steel strand wires, on the pedestal (201) of cylinder barrel (2), piston
(3) and all have on piston rod (3 ') along the axis direction of piston and penetrate hole, Mei Gesuo for installing the several of described sleeve pipe
It states casing (7) and penetrates penetrating on hole and piston and piston rod also cross on the pedestal of cylinder barrel corresponding thereto respectively
Hole, each described sleeve pipe (7) are fixedly connected with the pedestal (201) of cylinder barrel, and piston (3) and piston rod (3 ') are sleeved on several sets
It manages on (7) and clearance fit therewith, is set with pressure spring (4) on the outer circumference surface of piston rod (3 '), one end of pressure spring (4) is by piston
(3) it limits, the other end of pressure spring (4) is limited by positioning sleeve (5), and positioning sleeve (5) is located at inner wall and piston rod (3 ') of cylinder barrel (2)
Between and be fixed on the inner wall of cylinder barrel (2), the outboard end of cylinder barrel (2), which has, becomes the shaft shoulder notch that engineering anchorage limits section
Face notch (203), the oil transportation mouth of the petroleum pipeline (101) of hydraulic hand-pump are connected with the oil nozzle (202) of the side bottom end of cylinder barrel.
2. fluid pressure type anchor rod prestress according to claim 1 stops loss device, it is characterised in that the number of the casing (7)
Amount is two.
3. fluid pressure type anchor rod prestress according to claim 1 stops loss device, it is characterised in that the piston rod (3 ')
Top as lifting face be in low-bit line (301) i.e. initial position line when, the low-bit line (301) and each casing (7)
Outboard end is mutually neat.
4. fluid pressure type anchor rod prestress according to claim 1 stops loss device, it is characterised in that the variable cross-section notch
(203) depth (H) is 10 ~ 15mm, when the top of piston rod (3 ') is in high bit line (302) as lifting face, the high position
The distance between the bottom surface of line (302) and variable cross-section notch (203) (h) is 5 ~ 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910320882.2A CN110004926A (en) | 2019-04-21 | 2019-04-21 | A kind of fluid pressure type anchor rod prestress stops loss device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910320882.2A CN110004926A (en) | 2019-04-21 | 2019-04-21 | A kind of fluid pressure type anchor rod prestress stops loss device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110004926A true CN110004926A (en) | 2019-07-12 |
Family
ID=67173300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910320882.2A Withdrawn CN110004926A (en) | 2019-04-21 | 2019-04-21 | A kind of fluid pressure type anchor rod prestress stops loss device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110004926A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110137483A (en) * | 2010-06-17 | 2011-12-23 | 주식회사 삼우기초기술 | Apparatus for fixing the permanent ground anchor |
| CN103967008A (en) * | 2014-04-04 | 2014-08-06 | 山东正元建设工程有限责任公司 | Clip type pre-stress anchor cable active clip feeding and tension locking device and use method |
| CN206267145U (en) * | 2016-12-23 | 2017-06-20 | 北京航勘建设有限公司 | A kind of anchor cable construction Integral jack-ups |
| CN207974109U (en) * | 2018-03-20 | 2018-10-16 | 太原理工大学 | A kind of composite structure reducing prestressed anchor stress loss in tensioning fixation |
| CN109555320A (en) * | 2018-12-18 | 2019-04-02 | 安徽中铁工程技术服务有限责任公司 | Intelligent tensioning presses limiting device automatically |
| CN209816846U (en) * | 2019-04-21 | 2019-12-20 | 河北建科唐秦建筑科技有限公司 | Hydraulic anchor rod prestress loss-stopping device |
-
2019
- 2019-04-21 CN CN201910320882.2A patent/CN110004926A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110137483A (en) * | 2010-06-17 | 2011-12-23 | 주식회사 삼우기초기술 | Apparatus for fixing the permanent ground anchor |
| CN103967008A (en) * | 2014-04-04 | 2014-08-06 | 山东正元建设工程有限责任公司 | Clip type pre-stress anchor cable active clip feeding and tension locking device and use method |
| CN206267145U (en) * | 2016-12-23 | 2017-06-20 | 北京航勘建设有限公司 | A kind of anchor cable construction Integral jack-ups |
| CN207974109U (en) * | 2018-03-20 | 2018-10-16 | 太原理工大学 | A kind of composite structure reducing prestressed anchor stress loss in tensioning fixation |
| CN109555320A (en) * | 2018-12-18 | 2019-04-02 | 安徽中铁工程技术服务有限责任公司 | Intelligent tensioning presses limiting device automatically |
| CN209816846U (en) * | 2019-04-21 | 2019-12-20 | 河北建科唐秦建筑科技有限公司 | Hydraulic anchor rod prestress loss-stopping device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20190712 |