CN106545539B - A kind of tensioning buried anchor inner blocking type hydraulic cylinder - Google Patents
A kind of tensioning buried anchor inner blocking type hydraulic cylinder Download PDFInfo
- Publication number
- CN106545539B CN106545539B CN201510599634.8A CN201510599634A CN106545539B CN 106545539 B CN106545539 B CN 106545539B CN 201510599634 A CN201510599634 A CN 201510599634A CN 106545539 B CN106545539 B CN 106545539B
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- hydraulic cylinder
- anchor
- moveable anchor
- moveable
- limit plate
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- 230000000903 blocking effect Effects 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 41
- 239000010959 steel Substances 0.000 claims abstract description 41
- 238000004080 punching Methods 0.000 claims abstract description 23
- 238000009434 installation Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
Title of the invention is a kind of buried anchor inner blocking type hydraulic cylinder of tensioning, is related to a kind of tension ground tackle inner blocking type hydraulic cylinder.The problem of it is that moveable anchor is placed in hydraulic cylinder that it, which mainly solves existing tensioning equipment, across the steel strand wires of limit plate, enters moveable anchor by lengthening set, and steel strand is time-consuming and laborious, and moveable anchor is heavier, and external screw is easy to damage when moving.The present invention includes hydraulic cylinder and the punching set that is located in hydraulic cylinder piston, and limit plate and moveable anchor, it is characterized in that: piston rod and the punching set of hydraulic cylinder piston stretch out hydraulic cylinder drive end bearing bracket, moveable anchor is placed in one end that punching set stretches out, moveable anchor interstage sleeve is fixed in punching set, one end of moveable anchor interstage sleeve is withstood on moveable anchor, and the other end is fixed on hydraulic cylinder rear end cap end face, limit plate and wire sub-panel and pushing tow set is equipped between moveable anchor.Moveable anchor of the invention is installed, is removed conveniently, and work efficiency is high, and anchorage reliability is high, and steel strand wires positional punch speed is fast.
Description
Technical field
The present invention relates to a kind of feed-through hydraulic cylinders, particularly relate to a kind of buried anchor inner blocking type hydraulic cylinder of tensioning.
Background technique
Existing feed-through hydraulic cylinder tension structure is as shown in Figure 1, in bridge prestress construction, and steel strand wires 10 are from installation
Be pierced by anchor plate 9 in beams of concrete and the work anchor slab 11 being mounted in anchor recess, sequentially pass through limit plate 12 plus
Inside long set 16, hydraulic cylinder, moveable anchor gasket ring 17, moveable anchor 15；It is 16 motionless to withstand lengthening set for hydraulic cylinder one end when tensioning, hydraulic
The piston 4 of cylinder drives moveable anchor gasket ring 17,15 outward movment of moveable anchor, and moveable anchor 15 clamps 10 1 pieces of steel strand wires and moves outward,
After reaching regulation strength and stretch value, 4 backhaul of piston, steel strand wires 10 are lived by 11 anchor of work anchor slab, are no longer bounced back with piston 4, from
And realize prestressed stretch-draw；To ensure that steel strand tension, steel strand wires should be reserved through limit plate 12, lengthen set 16, hydraulic cylinder, work
Has the length of anchor gasket ring 17, moveable anchor 15, steel strand wires 10 will generally reserve 800mm or so work outside 9 end face to beam body of anchor plate
Skill length；After tensioning is complete, then, so as to sealing off and covering anchorage, steel will be caused to twist away from steel strand wires excision extra outside work 11 end of anchor slab, 20 ∽ 30mm
Line waste.To save steel strand wires, the distance between moveable anchor 15 and limit plate 12 are shortened；Current existing technology is by moveable anchor
15 are placed on inside hydraulic cylinder, and moveable anchor 15 is threadedly attached in the punching set 5 of hydraulic cylinder；In the porous several groups of anchors of tensioning,
Using that will work, anchor slab 11 is mounted in the anchor recess away from beam-ends 200mm or so, and anchor recess is that diameter is 300 ~ 400mm, deep 200mm's
Dell, when tensioning, because hydraulic cylinder outer diameter is larger and is equipped with into/back leakage connection in left and right beam-ends, it has not been convenient to put in anchor recess；Tensioning
When between limit plate 12 and hydraulic cylinder equipped with set 16 is lengthened, length is 120 ~ 140mm, across the steel strand wires of limit plate 12, is led to
It crosses in lengthening 16 entering tool anchors 15 of set, sight is bad, and steel strand is time-consuming and laborious；Beam-ends generally has several specification anchorages,
Moveable anchor is screwed in the punching set 5 of hydraulic cylinder using 70 ~ 80mm long 3mm screw pitch spiral shell button, and replacement is inconvenient, and moveable anchor is all in addition
Heavier, it is difficult to ensure that handling with care after replacement, external screw is easy to damage, and causes moveable anchor screwing length not reach requirement, leads
Cause moveable anchor service life reduction.When bridge prestress is constructed, to guarantee that bridge both ends stretching force is almost the same, while tensioning is controlled
Power need to measure steel strand wires elongation, and measurement steel strand wires elongation is generally converted by measuring the overhang of piston 4, moveable anchor
It is built in 15 because when tensioning and common feed-through hydraulic cylinder mounting means is inconsistent, piston 4 is close to beam-ends, piston 4 when tensioning
Moveable cylinder 3 does not move outward, therefore it is inconvenient to measure 4 length of piston, time-consuming and laborious, for these reasons market using and not bery
It is more.
Summary of the invention
It is above-mentioned the purpose of the invention is to overcome the shortcomings of, and the quick positional punch of a kind of steel strand wires, quickly more is provided
Moveable anchor is changed, anchor is unloaded automatically, cancels the buried anchor inner blocking type hydraulic cylinder of a kind of tensioning for lengthening set.
The technical solution of the invention is as follows: inner blocking type hydraulic cylinder includes hydraulic cylinder and the punching that is located in hydraulic cylinder piston
Set and limit plate and moveable anchor are worn it is characterized in that: the piston rod of hydraulic cylinder piston and punching set stretch out hydraulic cylinder drive end bearing bracket
It is placed with moveable anchor in one end that heart set stretches out, is fixed with moveable anchor interstage sleeve in punching set, one end of moveable anchor interstage sleeve is withstood on
On moveable anchor, the other end is fixed on hydraulic cylinder rear end cap end face, limit plate and wire sub-panel and top is equipped between moveable anchor
Pushing sleeve.
Moveable anchor described in technical solution of the invention is fixed on by the step in punching set end inner circle and is worn
In heart set.
Pushing tow described in technical solution of the invention is set on the connecting pin of wire sub-panel and moveable anchor, pushing tow set
It is located in moveable anchor.
The piston rod of hydraulic cylinder piston described in technical solution of the invention, which stretches out, has step on drive end bearing bracket end,
Hydraulic cylinder piston is by the step-shaped top on limit plate.
Wire sub-panel described in technical solution of the invention and moveable anchor are mounted on limit by pilot hole thereon
On guide rod on plate, the end face that wire sub-panel is connect with limit plate is concordant with the outer end face that the piston rod of hydraulic cylinder piston stretches out.
The end face that wire sub-panel described in technical solution of the invention is connect with limit plate is equipped with and steel strand wires pair
The sub-wire hole of position.
The present invention, which lengthens piston rod, stretches out hydraulic cylinder drive end bearing bracket, and hydraulic cylinder piston rod outer diameter is compared with Barrel of Hydraulic Cylinders outer diameter
It is small, it is equipped with into/back leakage connection, hydraulic cylinder piston rod gos deep into anchor recess, eliminates the lengthening set in prior art, and by punching set
It lengthens, keeps moveable anchor preposition, so that the spacing between moveable anchor and limit plate has been shortened, when having shortened bridge tensioning outside steel strand wires
The length of dew is cancelled and has further shortened 120 ~ 140mm of steel strand wires after lengthening set, therefore, saves in bridge prestress construction
Steel strand wires, every steel strand wires both ends about save 1 meter or so, share 249 steel strand wires by the every hole beam of mining under railways and calculate, often
Hole beam saves 249m or so steel strand wires, and each Liang Chang produces 60 hole beams per month, can save 15 tons of steel strand wires, saves nearly 60,000 yuan by the moon, each
The beam of beam field 600 ~ 800, it is contemplated that ten thousand yuan of 60`8/0 can be saved, substantially reduce bridge cost；Railway and highway precast bridge at present
Substantially buried anchor is all used, the national thousands of families in precast beam field save money tens yuan every year.Moveable anchor of the invention eliminates
Spiral shell button is installed, is removed conveniently, reduces the damage of moveable anchor；Limit plate uses to be oriented on guide rod and wire sub-panel and moveable anchor
Hole connection, for porous group's anchor, effectively prevents steel strand wires between limit plate and moveable anchor to beat strand, improves anchorage reliability；It takes
Disappear after lengthening set, in moveable anchor front end, the wire sub-panel of setting can expose outside hydraulic cylinder piston rod end face, and sight is good, facilitates observation steel
It in twisted wire access aperture, avoids misdrawing hole location, leads to occur losing anchor stripped thread accident, it is time saving and energy saving, alleviate the labor intensity of worker.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing feed-through hydraulic cylinder tensioning.
Fig. 2 is structural schematic diagram of the invention.
Fig. 3 is the structural schematic diagram using tensioning of the present invention.
Specific embodiment
As shown in Figure 1, the present invention includes limit plate 12 and moveable anchor 15, and by cylinder barrel 3, piston 4, drive end bearing bracket 1, preceding envelope
The hydraulic cylinder that ring 1, rear seal ring 6, rear end cap 7 are constituted；Piston 4 is mounted on 3 bosom position of cylinder barrel, and the piston rod of piston 4 is convex
Drive end bearing bracket 1 out, long 100mm or more, nose end has step in tailpiece of the piston rod；The both ends of Barrel of Hydraulic Cylinders 3 are separately installed with front end
Lid 1, preceding seal ring 1, rear seal ring 6, rear end cap 7 are equipped with a punching set 5, punching set 5 and hydraulic cylinder structure in the inside of piston 4
At buried anchor inner blocking type hydraulic cylinder；Punching set 5 is a cylinder concentric with hydraulic cylinder piston 4, which leans on drive end bearing bracket 1 one
It holds inner circle to be equipped with step, is placed with moveable anchor 15 by 1 one end of hydraulic cylinder drive end bearing bracket in punching set 5, moveable anchor 15 is by wearing
The heart covers the step positioning in 5 inner circles；It is covered in punching and is equipped with a moveable anchor interstage sleeve 8 on 5 inner walls, which is one end
The cylinder of step is had in outer circle, one end of moveable anchor interstage sleeve 8 is withstood on moveable anchor 15, and the other end is logical by the step in outer circle
It crosses bolt to be fixed on the rear end cap 7 of hydraulic cylinder, the 7 end vibration of end cap backward of moveable anchor 15 can be limited；In moveable anchor 15 and limit
Pushing tow set 14 and wire sub-panel 13 are installed, pushing tow set 14 and wire sub-panel 13 are bolted in moveable anchor 15 between the plate 12 of position
On；Limit plate 12 is equipped with two guide rods, is respectively equipped on moveable anchor 15 and wire sub-panel 13 and leads with two on limit plate 12
The pilot hole to match to bar, guide rod when installation on limit plate 12 sequentially pass through the guiding on wire sub-panel 13 and moveable anchor 15
Hole, moveable anchor 15 and wire sub-panel 13 are mounted on the guide rod on limit plate 12 by pilot hole thereon, and when tensioning passes through survey
Guide rod measures 4 elongation of hydraulic cylinder piston with 3 relative shift of Barrel of Hydraulic Cylinders on amount limit plate 12；Wire sub-panel 13 and limit
The contact jaw of position plate 12 is equipped with the sub-wire hole aligned with steel strand wires 10, and wire sub-panel 13 is equipped with the end face in the sub-wire hole and hydraulic cylinder is lived
The outer end face that the piston rod of plug 4 stretches out is concordant, another end of wire sub-panel 13 is equipped with pushing tow set 14, and pushing tow set 14 is located at tool
In anchor 15；The piston rod of hydraulic cylinder piston 4, which stretches out, has step on 1 end of drive end bearing bracket, hydraulic cylinder piston 4 passes through the step when use
It withstands on limit plate 12；Sub-wire hole is equipped on wire sub-panel 13；It is radially equipped with oil inlet at 3 front and back ends of cylinder barrel or returns
Hydraulic fluid port A, B.
Working principle: as shown in Figure 3: when bridge prestress is constructed, the steel strand wires 10 that will first be previously threaded through in bridge duct
Across work anchor slab 11, the limit plate 12 with guide rod is pierced into steel strand wires 10, mobile hydraulic cylinder is by the guiding of limit plate 12
Bar is directed at the pilot hole of wire sub-panel 13, continues to move to hydraulic cylinder, corresponds the steel strand wires 10 across 12 hole of limit plate and enters
Sub-wire hole on wire sub-panel 13 eventually passes through moveable anchor 15 into pushing tow set 14, and anchor, while leading on limit plate 12 are worn in realization
Moveable anchor 15 is passed through to bar；Oil inlet at the right end B of the cylinder barrel 3 of hydraulic cylinder when tensioning, oil return at the A of left end, by force using hydraulic oil
Oil is filled, Barrel of Hydraulic Cylinders 3 does relative motion with hydraulic cylinder piston 4, and moveable anchor 15 clamps steel strand wires 10, and hydraulic cylinder piston 4 is held out against
It after limit plate 12, no longer moves, Barrel of Hydraulic Cylinders 3 drives moveable anchor 15 to move right together under oil pressure effect, realizes that steel twists
Line 10 tenses；After steel strand wires 10 are tightened to regulation strength, oil inlet at the left end A of Barrel of Hydraulic Cylinders 3, oil return at right end B, steel strand wires
10 are clamped by work clip sheet, no longer bounce back；Moveable anchor 15 is also no longer moved because clamping steel strand wires 10, Barrel of Hydraulic Cylinders 3 and tool
Anchor fixing sleeve 8 is also no longer moved because moveable anchor 15 is motionless, fills oil by force using hydraulic oil, and hydraulic cylinder piston 4 is retracted to the right, is realized
10 stretch-draw anchor of steel strand wires；When hydraulic cylinder piston 4 retracts initial position, withstands 13 1 pieces of wire sub-panel and move right, wire sub-panel 13
On pushing tow set 14 open steel strand wires clamping device on moveable anchor 15, realize loose anchor；By the hydraulic cylinder steel strand wires complete from tensioning
It removes, limit plate 12 is taken out from the complete steel strand wires of tensioning, complete anchorage tensioning.Then limit plate 12 is pierced into next
The work anchor slab 11 for needing tensioning realizes different duct tensioning by above step.
For the anchorage of different size, when replacing moveable anchor, the connection of back off tool anchor interstage sleeve 8 and Barrel of Hydraulic Cylinders 3
Bolt takes out moveable anchor interstage sleeve 8 and moveable anchor 15 out of punching set 5, the moveable anchor for needing tensioning specification is changed, again by moveable anchor
Interstage sleeve 8 is bolted on Barrel of Hydraulic Cylinders 3, to realize fast quick change anchor.
Claims (6)
1. a kind of tensioning buried anchor inner blocking type hydraulic cylinder, including hydraulic cylinder and the punching set being located in hydraulic cylinder piston (4)
(5) and limit plate (12) and moveable anchor (15), it is characterized in that: the piston rod of hydraulic cylinder piston (4) and punching set (5) stretch out
Hydraulic cylinder drive end bearing bracket (1) is placed with moveable anchor (15) in one end that punching set (5) stretches out, is fixed with tool in the punching set (5)
Anchor interstage sleeve (8), one end of moveable anchor interstage sleeve (8) are withstood on moveable anchor (15), and the other end is fixed on hydraulic cylinder rear end cap (7) end face
On, wire sub-panel (13) and pushing tow set (14), pushing tow set (14) and wire sub-panel are installed between limit plate (12) and moveable anchor (15)
(13) it is bolted on moveable anchor (15)；Limit plate (12) is equipped with two guide rods, in moveable anchor (15) and sub-wire
It is respectively equipped with the pilot hole to match with limit plate (12) upper two guide rods on plate (13), leading on limit plate (12) when installation
The pilot hole on wire sub-panel (13) and moveable anchor (15) is sequentially passed through to bar, moveable anchor (15) and wire sub-panel (13) pass through thereon
Pilot hole is mounted on the guide rod on limit plate (12).
2. a kind of tensioning buried anchor inner blocking type hydraulic cylinder according to claim 1, it is characterized in that: the moveable anchor
(15) it is fixed in punching set (5) by the step in the inner circle of punching set (5) end.
3. a kind of tensioning buried anchor inner blocking type hydraulic cylinder according to claim 1, it is characterized in that: the pushing tow set
(14) it is located on the connecting pin of wire sub-panel (13) and moveable anchor (15), pushing tow set (14) is located in moveable anchor (15).
4. a kind of tensioning buried anchor inner blocking type hydraulic cylinder according to claim 1, it is characterized in that: the hydraulic cylinder is living
The piston rod for filling in (4), which stretches out, has step on hydraulic cylinder drive end bearing bracket (1) end, hydraulic cylinder piston (4) is being limited by the step-shaped top
On plate (12).
5. a kind of tensioning buried anchor inner blocking type hydraulic cylinder according to claim 1, it is characterized in that: wire sub-panel (13) and limit
The end face that position plate (12) connects is concordant with the outer end face that the piston rod of hydraulic cylinder piston (4) stretches out.
6. a kind of tensioning buried anchor inner blocking type hydraulic cylinder according to claim 1, it is characterized in that: the wire sub-panel
(13) end face connecting with limit plate (12) is equipped with the sub-wire hole aligned with steel strand wires (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510599634.8A CN106545539B (en) | 2015-09-21 | 2015-09-21 | A kind of tensioning buried anchor inner blocking type hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510599634.8A CN106545539B (en) | 2015-09-21 | 2015-09-21 | A kind of tensioning buried anchor inner blocking type hydraulic cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106545539A CN106545539A (en) | 2017-03-29 |
| CN106545539B true CN106545539B (en) | 2019-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510599634.8A Active CN106545539B (en) | 2015-09-21 | 2015-09-21 | A kind of tensioning buried anchor inner blocking type hydraulic cylinder |
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| CN (1) | CN106545539B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108103946B (en) * | 2017-12-21 | 2019-04-16 | 中国十九冶集团有限公司 | Tensioning device applied to small space construction |
| CN113501459A (en) * | 2021-05-27 | 2021-10-15 | 中铁十九局集团第三工程有限公司 | Front-clamping porous through jack structure |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3100627A1 (en) * | 1981-01-12 | 1982-07-29 | Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen | Device for mounting a piston rod in a cylinder cover in the case of pneumatic or hydraulic working cylinders |
| DE4423049A1 (en) * | 1994-07-03 | 1995-01-19 | Lai Xiao Wei | Variable-power, multi-purpose hydraulic device, as a hand tool, capable of both drawing and pressing, of the central-pin type (and concentric double-piston type) |
| CN2399366Y (en) * | 1999-12-31 | 2000-10-04 | 开封科英预应力锚具厂 | Four-action tension jack |
| CN101725113A (en) * | 2009-12-08 | 2010-06-09 | 中铁大桥(郑州)缆索有限公司 | Two arm-brace stretching method of arc bridge tie bar cable |
| CN202116235U (en) * | 2011-05-19 | 2012-01-18 | 中铁十局集团有限公司 | Fore-cramp jack |
| CN202337669U (en) * | 2011-10-19 | 2012-07-18 | 中铁四局集团第一工程有限公司 | Prestress internal clamping jack |
| CN102674196A (en) * | 2012-06-08 | 2012-09-19 | 柳州泰姆预应力机械有限公司 | Split front-clamping type tensioning jack and construction method thereof |
| CN205064431U (en) * | 2015-09-21 | 2016-03-02 | 襄阳中铁宏吉工程技术有限公司 | Inside callipers formula pneumatic cylinder for anchor is buried deeply in stretch -draw |
-
2015
- 2015-09-21 CN CN201510599634.8A patent/CN106545539B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3100627A1 (en) * | 1981-01-12 | 1982-07-29 | Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen | Device for mounting a piston rod in a cylinder cover in the case of pneumatic or hydraulic working cylinders |
| DE4423049A1 (en) * | 1994-07-03 | 1995-01-19 | Lai Xiao Wei | Variable-power, multi-purpose hydraulic device, as a hand tool, capable of both drawing and pressing, of the central-pin type (and concentric double-piston type) |
| CN2399366Y (en) * | 1999-12-31 | 2000-10-04 | 开封科英预应力锚具厂 | Four-action tension jack |
| CN101725113A (en) * | 2009-12-08 | 2010-06-09 | 中铁大桥(郑州)缆索有限公司 | Two arm-brace stretching method of arc bridge tie bar cable |
| CN202116235U (en) * | 2011-05-19 | 2012-01-18 | 中铁十局集团有限公司 | Fore-cramp jack |
| CN202337669U (en) * | 2011-10-19 | 2012-07-18 | 中铁四局集团第一工程有限公司 | Prestress internal clamping jack |
| CN102674196A (en) * | 2012-06-08 | 2012-09-19 | 柳州泰姆预应力机械有限公司 | Split front-clamping type tensioning jack and construction method thereof |
| CN205064431U (en) * | 2015-09-21 | 2016-03-02 | 襄阳中铁宏吉工程技术有限公司 | Inside callipers formula pneumatic cylinder for anchor is buried deeply in stretch -draw |
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| Publication number | Publication date |
|---|---|
| CN106545539A (en) | 2017-03-29 |
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Effective date of registration: 20231107 Address after: 412007 Haitian Road, Tianyuan District, Zhuzhou, Hunan Province, No. 18 Patentee after: ZHUZHOU TIMES NEW MATERIAL TECHNOLOGY Co.,Ltd. Address before: 441047 No. 132 Changhong North Road, Hubei, Xiangfan Patentee before: XIANGYANG CHINA RAILWAY HONGJI ENGINEERING CO.,LTD. |
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