CN106545539A - A kind of buried anchor inner blocking type hydraulic cylinder of tensioning - Google Patents
A kind of buried anchor inner blocking type hydraulic cylinder of tensioning Download PDFInfo
- Publication number
- CN106545539A CN106545539A CN201510599634.8A CN201510599634A CN106545539A CN 106545539 A CN106545539 A CN 106545539A CN 201510599634 A CN201510599634 A CN 201510599634A CN 106545539 A CN106545539 A CN 106545539A
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- hydraulic cylinder
- anchor
- moveable anchor
- limiting plate
- moveable
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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 26
- 239000003921 oil Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 239000002699 waste material 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
- 238000009434 installation Methods 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
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- Piles And Underground Anchors (AREA)
Abstract
The title of the present 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.It is that moveable anchor is placed in hydraulic cylinder that it mainly solves existing tensioning equipment, through the steel strand wires of limiting plate, covers into moveable anchor by lengthening, and steel strand is wasted time and energy, and moveable anchor is heavier, the problem that external screw is easily damaged when moving.The present invention includes hydraulic cylinder and the punching set being located in hydraulic cylinder piston, and limiting plate and moveable anchor, it is characterized in that：The piston rod and punching set of hydraulic cylinder piston stretches out hydraulic cylinder drive end bearing bracket, moveable anchor is placed with one end that punching set stretches out, moveable anchor interstage sleeve is fixed with punching set, one end of moveable anchor interstage sleeve is withstood on moveable anchor, the other end is fixed on hydraulic cylinder rear end cap end face, limiting plate and wire sub-panel and pushing tow set is provided between moveable anchor.The moveable anchor of the present invention is installed, is removed conveniently, and high working efficiency, anchorage reliability are high, and steel strand wires positional punch speed is fast.
Description
Technical field
The present invention relates to a kind of feed-through hydraulic cylinder, particularly relates to a kind of buried anchor inner blocking type hydraulic cylinder of tensioning.
Background technology
Existing feed-through hydraulic cylinder tension structure is as shown in Figure 1, in bridge prestress construction, steel strand wires 10 from the anchor plate 9 in the beams of concrete, and work anchor slab 11 in anchor recess in pass, sequentially pass through limiting plate 12, lengthen inside set 16, hydraulic cylinder, moveable anchor gasket ring 17, moveable anchor 15；During tensioning, to withstand lengthening set 16 motionless for hydraulic cylinder one end, the piston 4 of hydraulic cylinder drives moveable anchor gasket ring 17,15 outward movment of moveable anchor, 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 work 11 anchor of anchor slab, are no longer bounced back with piston 4, so as to realize prestressed stretch-draw；To guarantee steel strand tension, the length of set 16, hydraulic cylinder, moveable anchor gasket ring 17, moveable anchor 15 should be reserved by limiting plate 12, be lengthened to steel strand wires, and steel strand wires 10 will typically reserve 800mm or so process lengths to outside beam body from 9 end face of anchor plate；After tensioning is complete, then steel strand wires will be caused to waste away from the outer unnecessary steel strand wires excisions of 11 end of work anchor slab, 20 ∽ 30mm so as to sealing off and covering anchorage.To save steel strand wires, the distance between moveable anchor 15 and limiting plate 12 are shortened；Existing technology is that moveable anchor 15 is placed on inside hydraulic cylinder at present, and moveable anchor 15 is threadedly attached in the punching set 5 of hydraulic cylinder；In many hole count group anchors of tensioning, using by work anchor slab 11, in the anchor recess away from beam-ends 200mm or so, anchor recess is a diameter of 300 ~ 400mm, the dell of deep 200mm, during tensioning, because hydraulic cylinder external 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；Equipped with set 16 is lengthened between limiting plate 12 and hydraulic cylinder during tensioning, length is 120 ~ 140mm, and through the steel strand wires of limiting plate 12, by lengthening in 16 entering tool anchors 15 of set, sight line is bad, and steel strand is wasted time and energy；Beam-ends typically has several specification anchorages, moveable anchor is screwed in the punching set 5 of hydraulic cylinder using the long 3mm pitch spiral shell buttons of 70 ~ 80mm, change inconvenient, in addition moveable anchor is all heavier, it is difficult to ensure that handling with care after replacing, external screw is easy to damage, and causes moveable anchor screwing length not reach requirement, causes moveable anchor service life reduction.When bridge prestress is constructed, it is basically identical to ensure bridge two ends stretching force, stretching force is controlled simultaneously, steel strand wires elongation need to be measured, and measures steel strand wires elongation typically by the overhang of measurement piston 4 to convert, moveable anchor 15 it is built-in because during tensioning and common feed-through hydraulic cylinder mounting means is inconsistent, near beam-ends, during tensioning, moveable cylinder 3 is not moved piston 4 piston 4 outward, therefore it is inconvenient to measure 4 length of piston, waste time and energy, market is not using many for above-mentioned reasons.
The content of the invention
The invention aims to overcome the shortcomings of above-mentioned, and a kind of quick positional punch of steel strand wires, rapid tool change anchor are provided, are unloaded automatically anchor, cancelled the buried anchor inner blocking type hydraulic cylinder of a kind of tensioning for lengthening set.
The present invention technical solution be：Inner blocking type hydraulic cylinder includes hydraulic cylinder and the punching set being located in hydraulic cylinder piston, and limiting plate and moveable anchor, it is characterized in that：The piston rod and punching set of hydraulic cylinder piston stretches out hydraulic cylinder drive end bearing bracket, moveable anchor is placed with one end that punching set stretches out, moveable anchor interstage sleeve is fixed with punching set, one end of moveable anchor interstage sleeve is withstood on moveable anchor, the other end is fixed on hydraulic cylinder rear end cap end face, limiting plate and wire sub-panel and pushing tow set is provided between moveable anchor.
Moveable anchor described in the technical solution of the present invention is fixed in punching set by the step that punching is covered in the inner circle of end.
Pushing tow described in the technical solution of the present invention is set on the connection end of wire sub-panel and moveable anchor, and pushing tow is set in moveable anchor.
The piston rod of the hydraulic cylinder piston described in the technical solution of the present invention is stretched out with step on drive end bearing bracket end, and hydraulic cylinder piston is by the step-shaped top on limiting plate.
Wire sub-panel and moveable anchor described in the technical solution of the present invention is arranged on the guide post on limiting plate by pilot hole thereon, and the outer face that the end face that wire sub-panel is connected with limiting plate is stretched out with the piston rod of hydraulic cylinder piston is concordant.
The end face that wire sub-panel described in the technical solution of the present invention is connected with limiting plate is provided with the sub-wire hole with steel strand wires para-position.
Piston rod is lengthened and stretches out hydraulic cylinder drive end bearing bracket by the present invention，Hydraulic cylinder piston rod external diameter is little compared with Barrel of Hydraulic Cylinders external diameter，It is provided with into/back leakage connection，Hydraulic cylinder piston rod gos deep in anchor recess，Eliminate the lengthening set in prior art，And punching set is lengthened，Make moveable anchor preposition，So as to shorten the spacing between moveable anchor and limiting plate，The length that steel strand wires expose when having shortened bridge tensioning，Cancel 120 ~ 140mm of steel strand wires has further been shortened after lengthening set,Therefore，Steel strand wires are saved in bridge prestress construction，Every steel strand wires two ends about save 1 meter or so，249 steel strand wires are shared by mining under railways to calculate per hole beam，249m or so steel strand wires are saved per hole beam，Each Liang Chang produces 60 hole beams per month，15 tons of steel strand wires can be saved，The moon is saved nearly 60,000 yuan，The beam of each beam field 600 ~ 800，It is expected to save ten thousand yuan of 60`8/0，Substantially reduce bridge cost；At present railway and highway precast bridge all adopt buried anchor substantially, the thousand of families in national precast beam field, annual tens yuan of expense of saving.The moveable anchor of the present invention eliminates spiral shell button, installs, removes conveniently, reduces the damage of moveable anchor；Limiting plate is connected with pilot hole on wire sub-panel and moveable anchor using guide post, for porous group's anchor, is effectively prevented steel strand wires between limiting plate and moveable anchor to beat strand, is improve anchorage reliability；After cancelling lengthening set, the wire sub-panel arranged in moveable anchor front end can expose outside hydraulic cylinder piston rod end face, and sight line is good, in convenient observation steel strand wires access aperture, it is to avoid misdraw hole position, cause appearance to lose anchor stripped thread accident, time saving and energy saving, alleviate the labor intensity of workman.
Description of the drawings
Fig. 1 is the structural representation of existing feed-through hydraulic cylinder tensioning.
Fig. 2 is the structural representation of the present invention.
Fig. 3 is the structural representation using tensioning of the present invention.
Specific embodiment
As shown in figure 1, the present invention includes limiting plate 12 and moveable anchor 15, and the hydraulic cylinder being made up of cylinder barrel 3, piston 4, drive end bearing bracket 1, front seal ring 1, rear seal ring 6, rear end cap 7；Installed in 3 bosom position of cylinder barrel, the piston rod protrusion drive end bearing bracket 1 of piston 4, long more than 100mm, in tailpiece of the piston rod, nose end carries step to piston 4；The two ends of Barrel of Hydraulic Cylinders 3 are separately installed with drive end bearing bracket 1, front seal ring 1, rear seal ring 6, rear end cap 7, are provided with a punching set 5 in the inside of piston 4, and punching set 5 constitutes buried anchor inner blocking type hydraulic cylinder with hydraulic cylinder；Punching set 5 is a cylinder concentric with hydraulic cylinder piston 4, and the forward 1 one end inner circle of end cap of the cylinder is provided with step, in punching set 5 is placed with moveable anchor 15 by 1 one end of hydraulic cylinder drive end bearing bracket, and moveable anchor 15 is positioned by the step in punching 5 inner circles of set；Cover in punching a moveable anchor interstage sleeve 8 is provided with 5 inwalls, the moveable anchor interstage sleeve 8 is the cylindrical upper cylinder with step in one end, one end of moveable anchor interstage sleeve 8 is withstood on moveable anchor 15, the other end is bolted on the rear end cap 7 of hydraulic cylinder by the step on cylindrical, can limit the 7 end vibration of end cap backward of moveable anchor 15；Pushing tow set 14 and wire sub-panel 13 are installed between moveable anchor 15 and limiting plate 12, pushing tow set 14 and wire sub-panel 13 are bolted on moveable anchor 15；Limiting plate 12 is provided with two guide posts, the pilot hole matched with two guide posts on limiting plate 12 is respectively equipped with moveable anchor 15 and wire sub-panel 13, guide post during installation on limiting plate 12 sequentially passes through the pilot hole on wire sub-panel 13 and moveable anchor 15, moveable anchor 15 and wire sub-panel 13 are arranged on the guide post on limiting plate 12 by pilot hole thereon, by measuring on limiting plate 12 guide post with 3 relative shift of Barrel of Hydraulic Cylinders measuring 4 elongation of hydraulic cylinder piston during tensioning；Wire sub-panel 13 is provided with the sub-wire hole with 10 para-position of steel strand wires with the contact jaw of limiting plate 12, the end face that wire sub-panel 13 is provided with the sub-wire hole is concordant with the outer face that the piston rod of hydraulic cylinder piston 4 stretches out, another end of wire sub-panel 13 is provided with pushing tow set 14, and pushing tow set 14 is located in moveable anchor 15；The piston rod of hydraulic cylinder piston 4 is stretched out with step on 1 end of drive end bearing bracket, and during use, hydraulic cylinder piston 4 passes through the step-shaped top on limiting plate 12；Sub-wire hole is provided with wire sub-panel 13；Oil-in or oil return opening A, B are provided with radially at 3 front and back ends of cylinder barrel.
Operation principle：As shown in Figure 3：When bridge prestress is constructed, the steel strand wires 10 being previously threaded through in bridge duct are passed through into work anchor slab 11 first, limiting plate 12 with guide post is pierced into into steel strand wires 10, the guide post of limiting plate 12 is aligned mobile hydraulic cylinder the pilot hole of wire sub-panel 13, continues to move to hydraulic cylinder, makes the steel strand wires 10 through 12 hole of limiting plate correspond the sub-wire hole on wire sub-panel 13, into pushing tow set 14, moveable anchor 15 is eventually passed through, anchor is worn in realization, while the guide post on limiting plate 12 passes through moveable anchor 15；Oil-feed at the right-hand member B of the cylinder barrel 3 of hydraulic cylinder during tensioning, oil return at left end A, oil is filled by force using hydraulic oil, Barrel of Hydraulic Cylinders 3 is done relative motion with hydraulic cylinder piston 4, moveable anchor 15 clamps steel strand wires 10, after hydraulic cylinder piston 4 holds out against limiting plate 12, no longer moves, Barrel of Hydraulic Cylinders 3 is moved right together in oil pressure effect lower band power driven tools anchor 15, realizes that steel strand wires 10 are tensed；After steel strand wires 10 are tightened to regulation strength, oil-feed at the left end A of Barrel of Hydraulic Cylinders 3, oil return at right-hand member B, steel strand wires 10 are clamped by work clip sheet, are no longer bounced back；Moveable anchor 15 is also no longer moved because clamping steel strand wires 10, and Barrel of Hydraulic Cylinders 3 and moveable anchor fixed cover 8 are also no longer moved because moveable anchor 15 is motionless, fills oil by force using hydraulic oil, and hydraulic cylinder piston 4 is return to the right, realizes 10 stretch-draw anchor of steel strand wires；When hydraulic cylinder piston 4 returns initial position, withstand 13 1 pieces of wire sub-panel and move right, the pushing tow set 14 on wire sub-panel 13 backs down the steel strand wires clamping device on moveable anchor 15, realizes loose anchor；Hydraulic cylinder is removed from the complete steel strand wires of tensioning, limiting plate 12 is taken out from the complete steel strand wires of tensioning, anchorage tensioning is completed.Then limiting plate 12 is pierced into the next one needs the work anchor slab 11 of tensioning, realizes different duct tensioning by above step.
For the anchorage of different size, when moveable anchor is changed, the connecting bolt of back off tool anchor interstage sleeve 8 and Barrel of Hydraulic Cylinders 3, moveable anchor interstage sleeve 8 and moveable anchor 15 are taken out from punching set 5, changing needs the moveable anchor of tensioning specification, again moveable anchor interstage sleeve 8 is bolted on Barrel of Hydraulic Cylinders 3, so as to realize fast quick change anchor.
Claims (6)
1. a kind of tensioning buried anchor inner blocking type hydraulic cylinder, including hydraulic cylinder and hydraulic cylinder piston is located at（4）Interior punching set（5）, and limiting plate（12）And moveable anchor（15）, it is characterized in that：Hydraulic cylinder piston（4）Piston rod and punching set（5）Stretch out hydraulic cylinder drive end bearing bracket（1）, punching set（5）Moveable anchor is placed with the one end stretched out（15）, moveable anchor interstage sleeve (8) is fixed with punching set (5), one end of moveable anchor interstage sleeve (8) is withstood on moveable anchor (15), and the other end is fixed on hydraulic cylinder rear end cap（7）On end face, limiting plate（12）With in moveable anchor（15）Between wire sub-panel (13) and pushing tow set are installed（14）.
2. a kind of buried anchor inner blocking type hydraulic cylinder of tensioning according to claim 1, is characterized in that：Described moveable anchor（15）By punching set（5）Step in the inner circle of end is fixed on punching set（5）It is interior.
3. a kind of buried anchor inner blocking type hydraulic cylinder of tensioning according to claim 1, is characterized in that：Described pushing tow set（14）It is located at wire sub-panel（13）On the connection end of moveable anchor (15), pushing tow set（14）It is located at moveable anchor（15）It is interior.
4. a kind of buried anchor inner blocking type hydraulic cylinder of tensioning according to claim 1, is characterized in that：Described hydraulic cylinder piston（4）Piston rod stretch out drive end bearing bracket（1）Step, hydraulic cylinder piston are carried on end（4）By the step-shaped top in limiting plate（12）On.
5. a kind of buried anchor inner blocking type hydraulic cylinder of tensioning according to claim 1, is characterized in that：Described wire sub-panel（13）And moveable anchor（15）Limiting plate is arranged on by pilot hole thereon（12）On guide post on, wire sub-panel（13）With limiting plate（12）The end face and hydraulic cylinder piston of connection（4）The outer face stretched out of piston rod it is concordant.
6. a kind of buried anchor inner blocking type hydraulic cylinder of tensioning according to claim 1, is characterized in that：Described wire sub-panel（13）With limiting plate（12）The end face of connection is provided with and steel strand wires（10）The sub-wire hole of para-position.
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 true CN106545539A (en) | 2017-03-29 |
| CN106545539B 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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| Country | Link |
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| CN (1) | CN106545539B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108103946A (en) * | 2017-12-21 | 2018-06-01 | 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 |
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|---|---|---|---|---|
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108103946A (en) * | 2017-12-21 | 2018-06-01 | 中国十九冶集团有限公司 | Tensioning device applied to small space construction |
| 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 |
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| Publication number | Publication date |
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| CN106545539B (en) | 2019-04-30 |
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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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