CN205064431U - Inside callipers formula pneumatic cylinder for anchor is buried deeply in stretch -draw - Google Patents
Inside callipers formula pneumatic cylinder for anchor is buried deeply in stretch -draw Download PDFInfo
- Publication number
- CN205064431U CN205064431U CN201520728324.7U CN201520728324U CN205064431U CN 205064431 U CN205064431 U CN 205064431U CN 201520728324 U CN201520728324 U CN 201520728324U CN 205064431 U CN205064431 U CN 205064431U
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- anchor
- hydraulic cylinder
- stretch
- cover
- pneumatic cylinder
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Abstract
The utility model discloses an inside callipers formula pneumatic cylinder for anchor is buried deeply in stretch -draw, relates to stretch -draw inside callipers formula pneumatic cylinder for the ground tackle. It solves existing tensioning equipment to put the instrument anchor in the pneumatic cylinder, passes the steel strand wires of limiting plate, and through extension cover entering instrument anchor, it wastes time and energy to wear steel strand wires, and the instrument anchor is heavier, and the problem of easy damage is detained to outer spiral shell when moving. The utility model discloses a pneumatic cylinder with establish the guide sleeve in the pneumatic cylinder piston to and limiting plate and instrument anchor, characterized by: the piston rod and the guide sleeve of pneumatic cylinder piston stretch out the pneumatic cylinder front end housing, have placed the instrument anchor in the one end that the guide sleeve stretches out, have an instrument anchor spacer sleeve at the guide sleeve internal fixation, and the one end top of instrument anchor spacer sleeve is on the instrument anchor, and the other end is fixed on pneumatic cylinder rear end cap terminal surface, limiting plate and install the branch filament plate and the top pushes away the cover between the instrument anchor. The utility model discloses a convenience is installed, is taken off to the instrument anchor, and work efficiency is high, and the anchor reliability is high, and the steel strand wires positional punch is fast.
Description
Technical field
The utility model relates to a kind of feed-through hydraulic cylinder, relates to a kind of stretch-draw buried anchor inner blocking type oil hydraulic cylinder specifically.
Background technique
Existing feed-through hydraulic cylinder tension structure as shown in Figure 1, in bridge prestress construction, steel strand 10 pass from the anchor plate 9 be arranged on beams of concrete and the work anchor slab 11 being arranged in anchor recess, successively through limiting board 12, lengthen cover 16, oil hydraulic cylinder inside, moveable anchor gasket ring 17, moveable anchor 15; During stretch-draw oil hydraulic cylinder one end withstand lengthen cover 16 motionless, the piston 4 of oil hydraulic cylinder drives moveable anchor gasket ring 17, moveable anchor 15 outward movment, moveable anchor 15 clamps steel strand 10 1 pieces and moves outward, after reaching regulation strength and extension value, piston 4 backhaul, steel strand 10 are lived by work anchor slab 11 anchor, no longer bounce back with piston 4, thus realize prestressed stretch-draw; For guaranteeing steel strand tension, steel strand should be reserved by limiting board 12, the length lengthening cover 16, oil hydraulic cylinder, moveable anchor gasket ring 17, moveable anchor 15, and steel strand 10 generally will reserve about 800mm process length from anchor plate 9 end face to beam is external; After stretch-draw is complete, then will, apart from the outer unnecessary steel strand excision of work anchor slab 11 end 20 ∽ 30mm, so that sealing off and covering anchorage, steel strand be caused to waste.For saving steel strand, shorten the distance between moveable anchor 15 and limiting board 12; Current existing technology is that moveable anchor 15 is placed on oil hydraulic cylinder inside, and moveable anchor 15 is threaded connection in the punching cover 5 of oil hydraulic cylinder; When stretch-draw porous number group anchor, adopt and be arranged on work anchor slab 11 apart from the anchor recess of beam-ends about 200mm, anchor recess is diameter is 300 ~ 400mm, the dell of dark 200mm, during stretch-draw, because oil hydraulic cylinder external diameter is comparatively large and be equipped with into/back leakage connection at left and right beam-ends, be inconvenient to put in anchor recess; Be equipped with between limiting board 12 and oil hydraulic cylinder during stretch-draw and lengthen cover 16, length is 120 ~ 140mm, and through the steel strand of limiting board 12, by lengthening in cover 16 entering tool anchor 15, sight line is bad, and steel strand is wasted time and energy; Beam-ends generally has several specification ground tackle, moveable anchor adopts 70 ~ 80mm long 3mm pitch spiral shell button to screw in the punching cover 5 of oil hydraulic cylinder, change inconvenient, in addition moveable anchor is all heavier, be difficult to guarantee after changing handle with care, external screw is easy to damage, causes moveable anchor screwing length not reach requirement, causes moveable anchor service life reduction.During bridge prestress construction, basically identical for ensureing bridge two ends stretching force, control stretching force simultaneously, steel strand elongation need be measured, measure steel strand elongation and generally converted by the overhang measuring piston 4, moveable anchor 15 built-in because stretch-draw time and common feed-through hydraulic cylinder mounting type inconsistent, piston 4 near beam-ends, during stretch-draw piston 4 not moveable cylinder 3 move outward, therefore measure piston 4 length inconvenient, waste time and energy, market uses not a lot for above-mentioned reasons.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, and provide the perforation of a kind of steel strand quick position, rapid tool change anchor, automatically unload anchor, cancel lengthen cover a kind of stretch-draw buried anchor inner blocking type oil hydraulic cylinder.
Technical solution of the present utility model is: inner blocking type oil hydraulic cylinder comprises oil hydraulic cylinder and is located at the punching cover in hydraulic cylinder piston, and limiting board and moveable anchor, it is characterized in that: piston rod and the punching cover of hydraulic cylinder piston stretch out oil hydraulic cylinder front cover, moveable anchor is placed with in one end that punching cover stretches out, moveable anchor interstage sleeve is had at punching cover internal fixtion, one end of moveable anchor interstage sleeve withstands on moveable anchor, the other end is fixed on oil hydraulic cylinder rear end cover end face, limiting board and be provided with wire sub-panel and pushing tow cover between moveable anchor.
Moveable anchor described in technical solution of the present utility model is fixed in punching cover by the step in the inner circle of punching cover end.
Pushing tow described in technical solution of the present utility model is set on the connecting 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 technical solution of the present utility model stretches out with step on front cover end, and hydraulic cylinder piston passes through this step-shaped top on limiting board.
Wire sub-panel described in technical solution of the present utility model and moveable anchor are arranged on by the pilot hole on it on guide rod on limiting board, and the end face that wire sub-panel is connected with limiting board is concordant with the exterior edge face that the piston rod of hydraulic cylinder piston stretches out.
The end face that wire sub-panel described in technical solution of the present utility model is connected with limiting board is provided with the sub-wire hole with steel strand contraposition.
Piston rod lengthens and stretches out oil hydraulic cylinder front cover by the utility model, hydraulic cylinder piston rod external diameter is little compared with Barrel of Hydraulic Cylinders external diameter, be provided with into/back leakage connection, hydraulic cylinder piston rod gos deep in anchor recess, eliminate the lengthening cover in prior art, and punching cover is lengthened, make moveable anchor preposition, thus shortened the spacing between moveable anchor and limiting board, the length that when having shortened bridge stretch-draw, steel strand expose, cancel after lengthening cover and shortened steel strand 120 ~ 140mm further, therefore, steel strand are saved in bridge prestress construction, every root steel strand two ends approximately save about 1 meter, share 249 steel strand by mining under railways every hole beam to calculate, every hole beam saves about 249m steel strand, each Liang Chang produces 60 hole beams per month, 15 tons of steel strand can be saved, the moon saves nearly 60,000 yuan, 600 ~ 800, each beam field beam, expectation can save 60`,8/0 ten thousand yuan, greatly reduce bridge cost, current railway and highway precast bridge substantially all adopt buried anchor, national several thousand, prefabricating beam field, annual cost saving tens yuan.Moveable anchor of the present utility model eliminates spiral shell button, installs, takes off conveniently, decrease the damage of moveable anchor; Limiting board adopts guide rod to be connected with pilot hole on wire sub-panel and moveable anchor, for porous group anchor, effectively prevents steel strand between limiting board and moveable anchor to beat strand, improves anchorage reliability; Cancel after lengthening cover, the wire sub-panel arranged in moveable anchor front end can expose outside hydraulic cylinder piston rod end face, and sight line is good, conveniently observes in steel strand access aperture, avoids misdrawing position, hole, causes occurring losing anchor stripped thread accident, time saving and energy saving, alleviates the labor intensity of workman.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing feed-through hydraulic cylinder stretch-draw.
Fig. 2 is structural representation of the present utility model.
Fig. 3 is the structural representation using the utility model stretch-draw.
Embodiment
As shown in Figure 1, the utility model comprises limiting board 12 and moveable anchor 15, and the oil hydraulic cylinder be made up of cylinder barrel 3, piston 4, front cover 1, front seal ring 1, rear seal ring 6, rear end cover 7; Piston 4 is arranged on cylinder barrel 3 bosom position, and the piston rod of piston 4 protrudes front cover 1, long more than 100mm, and tailpiece of the piston rod endoporus end band has step; The two ends of Barrel of Hydraulic Cylinders 3 are separately installed with front cover 1, front seal ring 1, rear seal ring 6, rear end cover 7, and be provided with a punching cover 5 in the inside of piston 4, punching cover 5 forms buried anchor inner blocking type oil hydraulic cylinder with oil hydraulic cylinder; Punching cover 5 is cylinders concentric with hydraulic cylinder piston 4, and this cylinder forward end cap 1 one end inner circle is provided with step, in punching cover 5, be placed with moveable anchor 15 by oil hydraulic cylinder front cover 1 one end, and moveable anchor 15 overlaps the step location in 5 inner circles by punching; Overlap on 5 inwalls in punching and be provided with a moveable anchor interstage sleeve 8, this moveable anchor interstage sleeve 8 is the cylinders with step on the cylindrical of one end, one end of moveable anchor interstage sleeve 8 withstands on moveable anchor 15, the other end is bolted on the rear end cover 7 of oil hydraulic cylinder by the step on cylindrical, can Limit Tool anchor 15 end cap 7 end vibration backward; Between moveable anchor 15 and limiting board 12, be provided with pushing tow overlap 14 and wire sub-panel 13, pushing tow cover 14 and wire sub-panel 13 are bolted on moveable anchor 15; Limiting board 12 is provided with two guide rods, moveable anchor 15 and wire sub-panel 13 are respectively equipped with the pilot hole matched with two guide rods on limiting board 12, guide rod during installation on limiting board 12 is successively 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 rod on limiting board 12 by the pilot hole on it, measure hydraulic cylinder piston 4 elongation during stretch-draw by measuring guide rod and Barrel of Hydraulic Cylinders 3 relative shift on limiting board 12; Wire sub-panel 13 is provided with the sub-wire hole with steel strand 10 contraposition with the contact jaw of limiting board 12, the end face that wire sub-panel 13 is provided with this sub-wire hole is concordant with the exterior edge face that the piston rod of hydraulic cylinder piston 4 stretches out, another end of wire sub-panel 13 is provided with pushing tow cover 14, and pushing tow cover 14 is located in moveable anchor 15; The piston rod of hydraulic cylinder piston 4 stretches out with step on front cover 1 end, and during use, hydraulic cylinder piston 4 passes through this step-shaped top on limiting board 12; Wire sub-panel 13 is provided with sub-wire hole; Filler opening or return opening A, B is radially provided with at cylinder barrel 3 front and back ends place.
Working principle: as shown in Figure 3: during bridge prestress construction, first will pass work anchor slab 11 through the steel strand 10 in bridge duct in advance, limiting board 12 with guide rod is pierced into steel strand 10, the guide rod of limiting board 12 is aimed at the pilot hole of wire sub-panel 13 by mobile hydraulic cylinder, continue mobile hydraulic cylinder, steel strand 10 one_to_one corresponding through limiting board 12 hole is made to enter sub-wire hole on wire sub-panel 13, enter pushing tow cover 14, eventually pass through moveable anchor 15, anchor is worn in realization, and the guide rod simultaneously on limiting board 12 is through moveable anchor 15; Right-hand member B place's oil-feed of the cylinder barrel 3 of oil hydraulic cylinder during stretch-draw, left end A place's oil return, hydraulic oil is utilized to fill with oil by force, Barrel of Hydraulic Cylinders 3 and hydraulic cylinder piston 4 do relative motion, moveable anchor 15 clamps steel strand 10, and hydraulic cylinder piston 4 no longer moves after holding out against limiting board 12, Barrel of Hydraulic Cylinders 3 drives moveable anchor 15 to move right together under oil pressure effect, realizes steel strand 10 and strains; After steel strand 10 are tightened to regulation strength, left end A place's oil-feed of Barrel of Hydraulic Cylinders 3, right-hand member B place's oil return, steel strand 10 are clamped by work clip sheet, no longer bounce back; Moveable anchor 15 also no longer moves because clamping steel strand 10, and Barrel of Hydraulic Cylinders 3 and moveable anchor fixed cover 8 also no longer move because moveable anchor 15 is motionless, and utilize hydraulic oil to fill with oil by force, hydraulic cylinder piston 4 is return to the right, realizes steel strand 10 stretch-draw anchor; When initial position return by hydraulic cylinder piston 4, withstand wire sub-panel 13 1 pieces and move right, the pushing tow cover 14 on wire sub-panel 13 backs down the steel strand clamp device on moveable anchor 15, realizes loose anchor; Oil hydraulic cylinder is shifted out from the steel strand that stretch-draw is complete, limiting board 12 is taken out from the steel strand that stretch-draw is complete, complete ground tackle stretch-draw.Then limiting board 12 is pierced into the work anchor slab 11 that the next one needs stretch-draw, realize the stretch-draw of different ducts by above step.
For the ground tackle of different size, when changing moveable anchor, 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 is taken out in punching cover 5, change the moveable anchor needing stretch-draw specification, again moveable anchor interstage sleeve 8 is bolted on Barrel of Hydraulic Cylinders 3, thus realizes fast quick change anchor.
Claims (6)
1. a stretch-draw buried anchor inner blocking type oil hydraulic cylinder, comprise oil hydraulic cylinder and be located at the punching cover (5) in hydraulic cylinder piston (4), and limiting board (12) and moveable anchor (15), it is characterized in that: piston rod and the punching cover (5) of hydraulic cylinder piston (4) stretch out oil hydraulic cylinder front cover (1), moveable anchor (15) is placed with in one end that punching cover (5) stretches out, moveable anchor interstage sleeve (8) is had at punching cover (5) internal fixtion, one end of moveable anchor interstage sleeve (8) withstands on moveable anchor (15), the other end is fixed on oil hydraulic cylinder rear end cover (7) end face, limiting board (12) and be provided with wire sub-panel (13) and pushing tow cover (14) between moveable anchor (15).
2. a kind of stretch-draw according to claim 1 buried anchor inner blocking type oil hydraulic cylinder, is characterized in that: described moveable anchor (15) is fixed in punching cover (5) by the step in the inner circle of punching cover (5) end.
3. a kind of stretch-draw according to claim 1 buried anchor inner blocking type oil hydraulic cylinder, is characterized in that: described pushing tow cover (14) is located at wire sub-panel (13) with on the connecting end of moveable anchor (15), and pushing tow cover (14) is located in moveable anchor (15).
4. a kind of stretch-draw according to claim 1 buried anchor inner blocking type oil hydraulic cylinder, it is characterized in that: the piston rod of described hydraulic cylinder piston (4) stretches out with step on front cover (1) end, hydraulic cylinder piston (4) by this step-shaped top on limiting board (12).
5. a kind of stretch-draw according to claim 1 buried anchor inner blocking type oil hydraulic cylinder, it is characterized in that: described wire sub-panel (13) and moveable anchor (15) are arranged on the guide rod on limiting board (12) by the pilot hole on it, and wire sub-panel (13) is concordant with the exterior edge face that the piston rod of hydraulic cylinder piston (4) stretches out with the end face that limiting board (12) is connected.
6. a kind of stretch-draw according to claim 1 buried anchor inner blocking type oil hydraulic cylinder, is characterized in that: the end face that described wire sub-panel (13) is connected with limiting board (12) is provided with the sub-wire hole with steel strand (10) contraposition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520728324.7U CN205064431U (en) | 2015-09-21 | 2015-09-21 | Inside callipers formula pneumatic cylinder for anchor is buried deeply in stretch -draw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520728324.7U CN205064431U (en) | 2015-09-21 | 2015-09-21 | Inside callipers formula pneumatic cylinder for anchor is buried deeply in stretch -draw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205064431U true CN205064431U (en) | 2016-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520728324.7U Expired - Fee Related CN205064431U (en) | 2015-09-21 | 2015-09-21 | Inside callipers formula pneumatic cylinder for anchor is buried deeply in stretch -draw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205064431U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106192768A (en) * | 2016-08-31 | 2016-12-07 | 襄阳中铁宏吉工程技术有限公司 | A kind of hold down gag and steel strand prestress tensioning system |
| CN106545539A (en) * | 2015-09-21 | 2017-03-29 | 襄阳中铁宏吉工程技术有限公司 | A kind of buried anchor inner blocking type hydraulic cylinder of tensioning |
| CN108331803A (en) * | 2018-01-10 | 2018-07-27 | 襄阳中铁宏吉工程技术有限公司 | Mast lifting opens and closes simulator |
-
2015
- 2015-09-21 CN CN201520728324.7U patent/CN205064431U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545539A (en) * | 2015-09-21 | 2017-03-29 | 襄阳中铁宏吉工程技术有限公司 | A kind of buried anchor inner blocking type hydraulic cylinder of tensioning |
| CN106545539B (en) * | 2015-09-21 | 2019-04-30 | 襄阳中铁宏吉工程技术有限公司 | A kind of tensioning buried anchor inner blocking type hydraulic cylinder |
| CN106192768A (en) * | 2016-08-31 | 2016-12-07 | 襄阳中铁宏吉工程技术有限公司 | A kind of hold down gag and steel strand prestress tensioning system |
| CN108331803A (en) * | 2018-01-10 | 2018-07-27 | 襄阳中铁宏吉工程技术有限公司 | Mast lifting opens and closes simulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 Termination date: 20200921 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |