CN205257872U - Automatic dedicated inside callipers formula jack of push -pull system of opening of iron road bridge roof beam prestressing force - Google Patents
Automatic dedicated inside callipers formula jack of push -pull system of opening of iron road bridge roof beam prestressing force Download PDFInfo
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- CN205257872U CN205257872U CN201521091556.2U CN201521091556U CN205257872U CN 205257872 U CN205257872 U CN 205257872U CN 201521091556 U CN201521091556 U CN 201521091556U CN 205257872 U CN205257872 U CN 205257872U
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- cylinder body
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- prestressing force
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Abstract
The utility model belongs to the jack especially indicates an automatic dedicated inside callipers formula jack of push -pull system of opening of iron road bridge roof beam prestressing force. Assembling in the piston of cylinder body inner wall including cylinder body, sliding seal, seting up on the cylinder body and export in the hydraulic fluid port that surpasses the limit of piston both sides and reach back the top hydraulic fluid port, the inner wall of cylinder body one end is fixed with the silk dish, is fixed in the uide bushing outside and inner surface of the piston sliding seal assembly of cylinder body inner wall, the piston and thread coil between the cylinder body in be equipped with sealing component, the piston that lies in the uide bushing outside stretches out a tip thread tightening of end and guide sleeve, and the other end inner wall of guide sleeve is fixed with instrument anchor loading board. It has solved the accuracy of measurement subalternation problem that exists among the prior art. Have advantages such as displacement measurement accuracy, displacement frock long service life.
Description
Technical field
The utility model belongs to jack, refers to that especially a kind of railroad bridge prestressing force automatic Tensioning system is specialWith fastening type jack.
Background technology
Stretch-draw jack is mainly used in the stretch-draw of the presstressed reinforcing steels such as stretch-draw steel hinge line, is prestress engineering stretch-drawOne of indispensable important tool in anchoring construction. When pre-stress construction facility are selected, generally there are two kindsScheme, the first is selected common centre-hole jack, easy and simple to handle, and moveable anchor is positioned at jack rear end,But the outer reserved steel strand wires length of work anchor is longer. The second is to select fastening type jack, because of prestressing forceMuscle is expensive and engineering consumption is large, for reducing construction cost, and when stretch-draw multi beam prestress wire, oneAs adopt the fastening type jack that shortens the outer steel strand wires protruded length of anchor to carry out stretching construction. In this jackMoveable anchor is placed in jack inner side, and the outer steel strand wires length in reserve of anchor is than adopting common centre-hole jack to shortenApproximately 50%. While measuring steel strand wires elongation, generally try to achieve by adopting Steel Ruler to measure the conversion of piston elongation.Also have the mode that installs displacement transducer frock in cylinder body periphery additional that adopts, one end of displacement measurement frock is solidFix on cylinder body, the other end is that the external part of displacement transducer is associated with piston end, forms piston displacementMeasurement, be converted to the measurement of steel strand wires elongation by displacement measurement. Due to existing common inner blocking typeJack piston in the time that stretch-draw is used is motionless, after cylinder body, moves, and in stretching process, cylinder body can produce rotation, causesDisplacement frock basis is changed, cause measuring inaccurate. This measuring method in addition, piston is positioned at and leans onNearly beam side one end, measures the external part frock of displacement near beam side, when construction, and jack steel strandShu Shi, easily breaks displacement measurement frock inner side, and the life-span of displacement frock reduces greatly.
Utility model object
The utility model provides a kind of displacement measurement railroad bridge prestressing force automatic Tensioning system-specific accuratelyFastening type jack.
Overall structure of the present utility model is:
The fastening type jack of railroad bridge prestressing force automatic Tensioning system-specific, comprise cylinder body, slide closeEncapsulation is assigned in the piston of inboard wall of cylinder block, is opened on cylinder body and exports going out top hydraulic fluid port and going back in piston both sidesTop hydraulic fluid port, the inwall of cylinder body one end is fixed with wire tray, is fixed on fairlead outside and the piston of inboard wall of cylinder blockInwall slipper seal assembling, is provided with containment member in the cylinder body between piston and wire tray; Be positioned at outside fairleadOne end thread of the piston external part of side and punching cover is fixed, and the other end inwall of punching cover is fixed with workTool anchor loading plate.
Concrete structure of the present utility model is:
The Main Function of containment member is the sealing realizing out between top hydraulic fluid port and wire tray, preferred enforcement sideFormula is that described containment member is that sealing clamps the inboard wall of cylinder block table that is fixed between top hydraulic fluid port and wire trayThe intermediate plate of face.
The Main Function of fairlead is effective support to be provided and to form airtight chamber for hydraulic oil work for pistonDoing, is the effective location of simplified structure and guarantee fairlead, and preferably technical implementation way is, fairleadWith intermediate plate sealing assembling, the flange of one end arranged outside of fairlead and intermediate plate inner surface seam adoptSeam location.
Moveable anchor loading plate is for erecting tools anchor, and wherein comparatively preferred mounting means is, describedThe other end inner thread of moveable anchor loading plate and punching cover is fixed.
The utility model is work like this:
Go out top hydraulic fluid port oil-feed, hydraulic oil promotes piston and moves to the right, piston driving punching cover fortune to the rightMoving, punching cuff power driven tools anchor loading plate moves together to the right, and that realizes jack goes out to push work.
The hydraulic fluid port oil-feed that returns back to top, hydraulic oil promotes piston and moves to the left, piston driving punching cover fortune to the leftMoving, punching cuff power driven tools anchor loading plate moves together to the left, realizes the action that returns back to top of jack.
When the utility model uses, cylinder body is fixed, and piston stretches out, and in stretching process, cylinder body forms " not kinetoplast ",Piston, punching cover and moveable anchor loading plate form " movable body ". When " movable body " " not kinetoplast " relativelyWhile outwards movement, the moveable anchor of installing on moveable anchor loading plate automatically clamps presstressed reinforcing steel and carries out stretch-draw; ?After pulling into, " movable body " resets, and jack can be extracted out from presstressed reinforcing steel.
The obtained technological progress of the utility model is:
1, the utility model adopts the mode that cylinder body is fixed, piston stretches out, and automatic measurement displacement can be installedFrock, displacement measurement is accurate, has efficiently solved existing fastening type jack because piston is fixed, cylinder body is stretchedThe problem that while going out, cylinder body Turning matched shift measurement exerts an influence.
2, ensureing that on the short basis of the outer steel strand wires length of work anchor, piston external part is away from beam side, effectiveImprove the service life of displacement frock.
Brief description of the drawings
Accompanying drawing of the present utility model has:
Fig. 1 is overall structure schematic diagram of the present utility model.
Reference numeral in accompanying drawing is as follows:
1, wire tray; 2, intermediate plate; 3, fairlead; 4, piston; 5, cylinder body; 6, punching cover; 7,Moveable anchor loading plate; 8, go out top hydraulic fluid port; 9, the hydraulic fluid port that returns back to top.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further, but not as to this practicalityNovel restriction, the content that protection domain of the present utility model is recorded with claim is as the criterion, any foundationThe equivalence techniques means that description has been done are replaced, and all do not depart from protection domain of the present utility model.
The overall technology of the present embodiment is constructed as shown, is assemblied in cylinder body comprising cylinder body 5, slipper sealThe piston 4 of 5 inwalls, is opened on cylinder body 5 and exports and go out top hydraulic fluid port 8 and the oil that returns back to top in piston 4 both sidesMouthfuls 9, the inwall of cylinder body 5 one end is fixed with wire tray 1, fairlead 3 outsides of being fixed on cylinder body 5 inwalls withPiston 4 inwall slipper seal assemblings, are provided with containment member in the cylinder body 5 between piston 4 and wire tray 1;An end thread that is positioned at piston 4 external parts in fairlead 3 outsides and punching cover 6 is fixed, punching cover 6Other end inwall be fixed with moveable anchor loading plate 7.
Described containment member is that sealing clamps in the cylinder body 5 that is fixed between top hydraulic fluid port 8 and wire tray 1The intermediate plate 2 of wall surface.
Fairlead 3 and intermediate plate 2 sealing assemblings, the flange of one end arranged outside of fairlead 3 is with middlePlate 2 inner surface seams adopt seam location.
Described moveable anchor loading plate 7 is fixed with the other end inner thread of punching cover 6.
Claims (4)
1. the fastening type jack of railroad bridge prestressing force automatic Tensioning system-specific, comprise cylinder body (5),Slipper seal is assemblied in the piston (4) of cylinder body (5) inwall, is opened in cylinder body (5) above and exports in workPlug (4) both sides go out top hydraulic fluid port (8) and the hydraulic fluid port that returns back to top (9), the inwall of cylinder body (5) one end is fixed withWire tray (1), fairlead (3) outside of being fixed on cylinder body (5) inwall is slided close with piston (4) inwallEncapsulation is joined, and in the cylinder body (5) between piston (4) and wire tray (1), is provided with containment member; Its feature existsFix in being positioned at piston (4) external part in fairlead (3) outside and an end thread of punching cover (6),The other end inwall of punching cover (6) is fixed with moveable anchor loading plate (7).
2. the inner blocking type thousand of railroad bridge prestressing force automatic Tensioning system-specific according to claim 1Jin top, is characterized in that described containment member is fixed on top hydraulic fluid port (8) and wire tray (1) for sealing clampsBetween the intermediate plate (2) of cylinder body (5) inner wall surface.
3. the inner blocking type thousand of railroad bridge prestressing force automatic Tensioning system-specific according to claim 2Jin top, is characterized in that fairlead (3) and intermediate plate (2) sealing assembling, one end of fairlead (3)The flange of arranged outside and intermediate plate (2) inner surface seam adopts seam location.
4. the inner blocking type thousand of railroad bridge prestressing force automatic Tensioning system-specific according to claim 1Jin top, is characterized in that described moveable anchor loading plate (7) and the other end inwall spiral shell of punching cover (6)Line is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521091556.2U CN205257872U (en) | 2015-12-24 | 2015-12-24 | Automatic dedicated inside callipers formula jack of push -pull system of opening of iron road bridge roof beam prestressing force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521091556.2U CN205257872U (en) | 2015-12-24 | 2015-12-24 | Automatic dedicated inside callipers formula jack of push -pull system of opening of iron road bridge roof beam prestressing force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205257872U true CN205257872U (en) | 2016-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521091556.2U Active CN205257872U (en) | 2015-12-24 | 2015-12-24 | Automatic dedicated inside callipers formula jack of push -pull system of opening of iron road bridge roof beam prestressing force |
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|---|---|
| CN (1) | CN205257872U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113772576A (en) * | 2021-09-22 | 2021-12-10 | 王志君 | Annular hydraulic cylinder and method for jacking bridge and building by using annular hydraulic cylinder |
-
2015
- 2015-12-24 CN CN201521091556.2U patent/CN205257872U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113772576A (en) * | 2021-09-22 | 2021-12-10 | 王志君 | Annular hydraulic cylinder and method for jacking bridge and building by using annular hydraulic cylinder |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |