CN104695329A - Adjustable center returning base of center penetrating jack - Google Patents
Adjustable center returning base of center penetrating jack Download PDFInfo
- Publication number
- CN104695329A CN104695329A CN201310653794.7A CN201310653794A CN104695329A CN 104695329 A CN104695329 A CN 104695329A CN 201310653794 A CN201310653794 A CN 201310653794A CN 104695329 A CN104695329 A CN 104695329A
- Authority
- CN
- China
- Prior art keywords
- adjustable
- screw rod
- base
- thoughts
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
- E04G21/121—Construction of stressing jacks
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses an adjustable center returning base of a center penetrating jack. The base comprises adjustable legs, a bracket baseplate, a stiffened plate and a ground foot cushion plate, wherein the adjustable legs are connected through the bracket baseplate; the lower ends of the adjustable legs are mounted on the ground foot cushion plate; four adjustable legs are provided; each adjustable leg comprises an adjustable screw rod; screw rod casings are mounted outside the adjustable screw rods; and multiple square nuts are connected with the screw rod casings. The base has the advantages of simple structure, convenience for operation, safety and reliability; and the jack eccentricity problem can be solved only by manually adjusting the adjustable screw rods through a spanner, so that the problems of capability of performing the jack eccentricity adjustment through the fit of multiple persons, prevention of repeated adjustment, long adjustment time and inaccurate centering precision are solved.
Description
Technical field
The invention belongs to the fining twisted steel tension technology field of the box girder bridge vertical prestressing in road and bridge construction, be specifically related to a kind of adjustable punching jack thoughts of returning home base.
Background technology
In road and bridge engineering technical field of construction, in the fining twisted steel stretching process of box girder bridge vertical prestressing, when stretch-draw, concrete strength should not lower than design strength requirement, but in practice of construction process, often do not reach requirement of strength, cause in stretch-draw prestressing force fining twisted steel process and produce eccentric phenomena, the mode of conventional correction exactly by artificially adding pading plate under nut backing plate at present, or pading plate is added under jack base supporting leg, to solve eccentricity issues, the all unreliable safety of these leveling methods, wastes time and energy.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of adjustable punching jack thoughts of returning home base, and its structure is simple, easy to operate, has saved the input of personnel, has shortened the time, improve work efficiency.
For solving the problem, the object of the present invention is achieved like this: a kind of adjustable punching jack thoughts of returning home base, comprise adjustable legs, base-plate, stiffened panel and lower margin backing plate, regulate between supporting leg and connected by base-plate, adjustable legs lower end is arranged on lower margin backing plate, described adjustable legs has four, and every root adjustable legs comprises adjusting screw(rod), screw sleeve pipe is housed outside adjusting screw(rod), multiple square nut is connected with screw rod sleeve pipe.
The screw tip of described adjustment supporting leg screw rod is square, makes the jack thoughts of returning home in order to adjust screw rod; The screw rod pin of adjusting screw(rod) is circular, rotates time just to adjust screw rod, regulates supporting leg screw rod through screw rod sleeve pipe and square nut.
Described screw sleeve tube material is seamless steel pipe, respectively with two square nut-weldings, supports distortion in order to protect adjusting screw(rod) and to rise.
Described base-plate connects with the square nut above adjusting screw(rod) respectively, is connected by welding manner, and centre is hollow, and prestressing force fining twisted steel is through base-plate.
Described lower margin backing plate is placed in below four supporting legs, conveniently rotates, strengthen basic compressive strength during in order to adjust screw rod.
Adjustable punching jack thoughts of returning home base provided by the invention, structure is simple, easy to operate, the problem that manually can solve jack bias with spanner adjustment adjusting screw(rod) is only needed during use, avoid by many people coordinate just can carry out jack bias adjustment, eliminate and repeatedly adjust, adjustment duration, and the problem that aligning precision is inaccurate.The present invention is particularly useful for the punching jack adjustment thoughts of returning home during fining twisted steel stretch-draw of box girder bridge vertical prestressing.Through test, the properties of this device all meets design standard requirement, has and reduces costs, accelerating construction progress, shortens the remarkable results such as construction period, handling safety, raising work efficiency, effectively ensures prestressing force fining twisted steel stretch-draw precision.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, invention is described further.
Fig. 1 is punching jack thoughts of returning home base facade structures schematic diagram of the present invention.
Fig. 2 is the I-I sectional view of Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
Structure of the present invention is as shown in Figure 1-2: a kind of adjustable punching jack thoughts of returning home base, described adjustable lifting jack thoughts of returning home base comprises adjustable legs 1, base-plate 2, stiffened panel 3 and lower margin backing plate 4, regulate between supporting leg and connected by base-plate 2, adjustable legs 1 lower end is arranged on lower margin backing plate 4, described adjustable legs 1 has four, every root adjustable legs 1 comprises adjusting screw(rod) 5, screw sleeve pipe 6 is housed outside adjusting screw(rod) 5, multiple square nut 7 is connected with screw rod sleeve pipe.
The screw tip 9 of described adjustment supporting leg screw rod 5 is square, makes the jack thoughts of returning home in order to adjust screw rod; The screw rod pin 8 of adjusting screw(rod) 5 is circular, rotates time just to adjust screw rod, regulates supporting leg screw rod 5 through screw rod sleeve pipe 6 and square nut 7.
Described screw rod sleeve pipe 6 material is seamless steel pipe, welds respectively with two square nuts 7, supports distortion in order to protect adjusting screw(rod) 5 and to rise.
Described base-plate 2 connects with the square nut 7 above adjusting screw(rod) 5 respectively, is connected by welding manner, and centre is hollow, and prestressing force fining twisted steel 10 is through base-plate 2.
Described lower margin backing plate 4 is placed in below four supporting legs, conveniently rotates, strengthen basic compressive strength during in order to adjust screw rod.
Operating principle of the present invention is as follows: punching jack 12 is arranged on base-plate 2.Operation is moved for ease of punching jack 12 and base, prestressing force fining twisted steel is divided into upper and lower two parts, top prestressing force fining twisted steel 10 through punching jack 12 and base-plate 2, and is fixed on punching jack 12 by anchoring backing plate 12 and anchoring nut 13; Prestressing force fining twisted steel 11 lower end, bottom enters into layer of concrete, by also anchoring nut 16 and anchoring backing plate 17 are fixed; Upper and lower two parts stress fining twisted steel is connected by hold-down nut 13.After completing above-mentioned flow process, namely can carry out the stretch-draw of prestressing force fining twisted steel, if there is eccentric phenomena, namely by regulating adjusting screw(rod) 5 to make punching very heavy item 12 thoughts of returning home.The stretch-draw of prestressing force fining twisted steel is complete, only need unclamp hold-down nut 13, and make prestressing force fining twisted steel 10 and prestressing force fining twisted steel 11 separately, translation punching jack 12 and base carry out the stretch-draw work of next prestressing force fining twisted steel.
Claims (5)
1. an adjustable punching jack thoughts of returning home base, it is characterized in that: described adjustable lifting jack thoughts of returning home base comprises adjustable legs (1), base-plate (2), stiffened panel (3) and lower margin backing plate (4), regulate between supporting leg and connected by base-plate (2), adjustable legs (1) lower end is arranged on lower margin backing plate (4), described adjustable legs (1) has four, every root adjustable legs (1) comprises adjusting screw(rod) (5), screw sleeve pipe (6) is housed outside adjusting screw(rod) (5), multiple square nut (7) is connected with screw rod sleeve pipe.
2. the adjustable punching jack of the one according to right 1 thoughts of returning home base, is characterized in that: the screw tip (9) of described adjustment supporting leg screw rod (5), for square, makes the jack thoughts of returning home in order to adjust screw rod; The screw rod pin (8) of adjusting screw(rod) (5) is circular, rotates time just to adjust screw rod, regulates supporting leg screw rod (5) through screw rod sleeve pipe (6) and square nut (7).
3. the adjustable punching jack of the one according to right 1 thoughts of returning home base; it is characterized in that: described screw rod sleeve pipe (6) material is seamless steel pipe; weld with two square nuts (7) respectively, support distortion in order to protect adjusting screw(rod) (5) and to rise.
4. the adjustable punching jack of the one according to right 1 thoughts of returning home base, it is characterized in that: described base-plate (2) connects with the square nut (7) of adjusting screw(rod) (5) top respectively, connected by welding manner, centre is hollow, and prestressing force fining twisted steel (10) is through base-plate (2).
5. the adjustable punching jack of the one according to right 1 thoughts of returning home base, is characterized in that: described lower margin backing plate (4) is placed in below four supporting legs, conveniently rotates, strengthen basic compressive strength during in order to adjust screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310653794.7A CN104695329A (en) | 2013-12-09 | 2013-12-09 | Adjustable center returning base of center penetrating jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310653794.7A CN104695329A (en) | 2013-12-09 | 2013-12-09 | Adjustable center returning base of center penetrating jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104695329A true CN104695329A (en) | 2015-06-10 |
Family
ID=53342845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310653794.7A Pending CN104695329A (en) | 2013-12-09 | 2013-12-09 | Adjustable center returning base of center penetrating jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104695329A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958232A (en) * | 2019-03-11 | 2019-07-02 | 中国建筑第八工程局有限公司 | Prestressed anchor clamp device and its application method |
| CN110029582A (en) * | 2019-05-16 | 2019-07-19 | 中铁十五局集团第一工程有限公司 | A kind of device and method for the double sunpender synchronous tensions of bowstring arch bridge |
-
2013
- 2013-12-09 CN CN201310653794.7A patent/CN104695329A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958232A (en) * | 2019-03-11 | 2019-07-02 | 中国建筑第八工程局有限公司 | Prestressed anchor clamp device and its application method |
| CN110029582A (en) * | 2019-05-16 | 2019-07-19 | 中铁十五局集团第一工程有限公司 | A kind of device and method for the double sunpender synchronous tensions of bowstring arch bridge |
| CN110029582B (en) * | 2019-05-16 | 2024-06-11 | 中铁十五局集团第一工程有限公司 | Device and method for synchronous tensioning of double suspenders of tied-arch bridge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150610 |