CN204955098U - Steering gear of broken line arrangement of reinforcement pre -tensioning system - Google Patents
Steering gear of broken line arrangement of reinforcement pre -tensioning system Download PDFInfo
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- CN204955098U CN204955098U CN201520771752.8U CN201520771752U CN204955098U CN 204955098 U CN204955098 U CN 204955098U CN 201520771752 U CN201520771752 U CN 201520771752U CN 204955098 U CN204955098 U CN 204955098U
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Abstract
The utility model relates to a prefabricated device, especially a steering gear of broken line arrangement of reinforcement pre -tensioning system of bridge, including the location steel sheet, the location steel sheet divide into and exposes the subtotal imbed part, is equipped with a plurality of cinclidess on the imbed part, and there is the slope top at cinclides both ends, and expose the part and fork ear upper end links to each other, and fork ear lower extreme even has drop -down screw rod, and drop -down screw rod passes the hole anchor due to ground. Use the utility model discloses, the friction loss of steel strand wires is little, but round pin axle, fork ear and drop -down screw rod reuse are striden the footpath when the roof beam body and can not adopted the steel strand wires of different quantity to join in marriage the mode of restrainting simultaneously, roof beam and boundary beam in can being applied to.
Description
Technical field
The utility model relates to a kind of device of bridge prefabrication, particularly a kind of broken-line reinforcement pre-tensioning system steering gear.
Background technology
Along with improving constantly of highway in China bridge structure design and scientific research level, also constantly increasing across footpath of structural system changing bridge construction, but, apply post stretching technique more widely in construction and also expose the outstanding problem that mud jacking leakiness, pipeline plug-hole, disorderly bundle etc. affect construction quality, for durability and the reliability of Long span precast beam structure in raising, improve the stress state of beam-ends and web, broken-line reinforcement prestressed concrete pre-tensioned method precast beam starts to be applied in highway bridge structure.So-called pre-tensioning system is cracking resistance in order to improve reinforced concrete member and avoid reinforced concrete member to occur crack too early, and applies stress in advance to improve a kind of method of component performance to it in concrete component prefabrication process.Usually before placing concrete, the preparation method of tension reinforcing steel bar is also referred to as pre-tensioning system, and it plays an important role in engineering construction.The important function such as steering gear (or claim " bending up device ") is played guiding, turned in the construction of broken-line reinforcement pre-tensioning system, location, affect deformed bar stretch-draw, to put and the critical component of effective prestress, therefore, the designing requirement simple structure of steering gear, frictional force little, be convenient to installation and removal, cost is low.
The transfer of current pretensioned prestressing reinforcing bar mainly contains the steering gear of clamping plate guiding roll-type, roller type steering gear, tuning-fork type steering gear and board-like steering gear etc. of leading, mostly there is complex structure in these existing steering gears, build is larger, restriction is had to web thickness and installing space, the making of steering gear, construction and unloading are all more complicated, the problem that processing cost is higher, be especially applied in middle long-span bridge girder construction, these problems are particularly outstanding.
Therefore, for expanding the scope of application of pre-tensioning system technique further, the transfer problem of deformed bar need be solved, i.e. reasonably steering gear.
Utility model content
For above-mentioned Problems existing, the utility model proposes the steering gear of a kind of broken-line reinforcement pre-tensioning system.
The steering gear of a kind of broken-line reinforcement pre-tensioning system, comprise: fixing steel plate, fixing steel plate is divided into exposed parts and inlet part, inlet part is provided with some cinclides, cinclides is used for fixing steel strand wires, has slope above the two ends of cinclides, and exposed parts is connected with fork ear upper end and is fixed by bearing pin, fork ear lower end is connected with drop-down screw rod, and drop-down screw rod schedules ground through hole anchoring.
Preferably, the cinclides on fixing steel plate comprises the first cinclides and the second cinclides, and the first cinclides can fix two with steel strand wires, and the second cinclides can fix steel strand wires, and cinclides is through grinding process.
Preferably, inlet part is provided with six the first cinclides and two the second cinclides.
Preferably, fixing steel plate adopts Q390C steel to make, and thickness is 40mm.
Preferably, the utility model also comprises: bearing pin, and fork ear is provided with corresponding pin shaft hole with exposed parts, and fixing steel plate is fixedly connected with fork ear through pin shaft hole by bearing pin.
Preferably, the circle of pin shaft hole diametrically 65mm.
Compared with prior art, the utility model adopts said structure, has following beneficial effect:
1. the friction loss between steel strand wires and fixing steel plate is little;
2. bearing pin, fork ear and drop-down screw rod can reuse, cost-saving;
3. the steel strand wires of varying number can be adopted to join bundle mode when beam body is different across footpath, good across footpath change adaptability to precast beam, can be applicable to central sill and side bar, applied widely.
Accompanying drawing explanation
Fig. 1 is the front view of embodiment of the present utility model.
Fig. 2 is the side view of embodiment of the present utility model.
Fig. 3 is the structural representation of fixing steel plate of the present utility model.
Wherein, mark corresponding parts name in accompanying drawing to be called: 101-inlet part, 102-exposed parts, 201-first cinclides, 202-second cinclides, the drop-down screw rod of 3-, 4-pitches ear, 5-bearing pin, 6-beams of concrete, 7-steel strand wires, 8-pin shaft hole.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail, and embodiment of the present utility model includes but not limited to the following example.
Embodiment
A kind of broken-line reinforcement pre-tensioning system steering gear as shown in Figure 1, Figure 2 and Figure 3, comprise: the fixing steel plate be made up of Q390C steel, fixing steel plate thickness is 40mm, such steel belong to high-tensile structural steel, wherein, " Q " represents yield strength, " C " representation quality grade, and namely fixing steel plate is yield strength is 390(unit: MPa), the high strength structure plate of C grade.Fixing steel plate is divided into exposed parts 102 and inlet part 101, and exposed parts 102 cuts away after beams of concrete 6 is removed.
Inlet part 101 is provided with totally eight cinclides, wherein, there are six the first cinclides 201 can fix two steel strand wires 7, two the second cinclides 202 can fix steel strand wires 7, in real work, need select different to join bundle mode across the difference in footpath according to the beam body of beams of concrete 6, fixing steel plate described in the present embodiment can join bundle 12 or 14 steel strand wires 7, when joining bundle 12 steel strand wires 7, six each two steel strand wires, 7, two the second cinclides 202 of fixing of the first cinclides 201 do not fix steel strand wires 7; When joining Shu Shisi root steel strand wires 7, six the first cinclides 201 are each fixes that two steel strand wires, 7, two the second cinclides 202 are each fixes steel strand wires 7.And central sill and side bar are all applicable to the device described in the present embodiment, applied range.
All there is 1.5 × 15(unit the top at the two ends of the first cinclides 201 and the second cinclides 202: mm) slope, such a construction ensures steel strand wires 7 bending angles smooth and easy, the most not sharp-pointed with cinclides edge place contacts, thus does not hinder steel strand wires 7, reduces friction loss simultaneously.
Fork ear 4 is provided with exposed parts 102 pin shaft hole 8 that corresponding diameter is 65mm, and fixing steel plate is fixedly connected with fork ear 4 through pin shaft hole 8 by the bearing pin 5 matched.Fork ear 4 lower end is provided with threaded hole, and drop-down screw rod 3 is connected with fork ear 4 by threaded hole, and drop-down screw rod 4 is through hole anchoring due to ground, and reserved aperture, slightly larger than the diameter of drop-down screw rod, is convenient to install.Bearing pin 5, fork ear 4 all can reuse with drop-down screw rod 3, cost-saving, unload the simple to operation of drop-down screw rod 3.
When deformed bar stretch-draw, this device plays the double action turning to and locate.Prestressed stretch-draw described here just refers to and add pulling force in advance in component, make to be applied in prestressed stretch-draw component and bear tension, and then make it produce certain deformation, deal with the load that steel construction itself is suffered, in the present embodiment, stretch-draw adopts steel strand wires.Before Engineering Structure Component bears external load, to the steel strand wires in tension module, apply compressive pre-stress, improve bending resistance and the rigidity of component, postpone the time that crack occurs, increase the durability of component.For frame for movement, its implication is for make it produce stress in advance, and its benefit to improve the rigidity of structure own, reduces vibration and elastic deformation, does the elastic strength obviously can improving tension module like this, makes resistance originally stronger.
Fixing steel plate bears the vertical force component of steel strand wires 7, and pass through to pitch ear 4 between fixing steel plate with drop-down screw rod 3, bearing pin 5 realizes being connected, therefore, fixing steel plate is in uniaxial force state, and power transmission is clear and definite.
Device described in the present embodiment is positioned at the span centre water chestnut place of beams of concrete 6, and after concreting, maintenance complete, the exposed parts 102 of fixing steel plate is cut off after drop-down screw rod 3 unloads completely and removes all accessories, and ensures that otch is smooth.
Through the test of engineer testing beam, the friction loss of steel strand wires 7 is less and meet desired value, and this device can bear construction load and application can reach good effect with central sill and side bar, and whole work progress safety is controlled.
Claims (6)
1. broken-line reinforcement pre-tensioning system steering gear, it is characterized in that, comprise: fixing steel plate, fixing steel plate is divided into exposed parts (102) and inlet part (101), inlet part (101) is provided with some cinclides, and there is slope the top at cinclides two ends, and exposed parts (102) is connected with fork ear (4) upper end, fork ear (4) lower end is connected with drop-down screw rod (3), and drop-down screw rod (3) schedules ground through hole anchoring.
2. a kind of broken-line reinforcement pre-tensioning system according to claim 1 steering gear, it is characterized in that, cinclides on inlet part (101) comprises: the first cinclides (201) and the second cinclides (202), first cinclides (201) can fix two with steel strand wires (7), second cinclides (202) can fix a steel strand wires (7), and cinclides is through grinding process.
3. a kind of broken-line reinforcement pre-tensioning system according to claim 2 steering gear, is characterized in that, inlet part (101) is provided with six the first cinclides (201) and two the second cinclides (202).
4. a kind of broken-line reinforcement pre-tensioning system according to claim 1 steering gear, is characterized in that, fixing steel plate adopts Q390C steel to make, and thickness is 40mm.
5. a kind of broken-line reinforcement pre-tensioning system according to claim 1 steering gear, it is characterized in that, also comprise: bearing pin (5), fork ear (4) is provided with corresponding pin shaft hole (8) with exposed parts (102), and fixing steel plate is fixedly connected with fork ear (4) through pin shaft hole (8) by bearing pin (5).
6. a kind of broken-line reinforcement pre-tensioning system according to claim 5 steering gear, is characterized in that, the circle of pin shaft hole (8) diametrically 65mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520771752.8U CN204955098U (en) | 2015-09-30 | 2015-09-30 | Steering gear of broken line arrangement of reinforcement pre -tensioning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520771752.8U CN204955098U (en) | 2015-09-30 | 2015-09-30 | Steering gear of broken line arrangement of reinforcement pre -tensioning system |
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| CN204955098U true CN204955098U (en) | 2016-01-13 |
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| CN201520771752.8U Active CN204955098U (en) | 2015-09-30 | 2015-09-30 | Steering gear of broken line arrangement of reinforcement pre -tensioning system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575031A (en) * | 2017-09-21 | 2018-01-12 | 柳州欧维姆机械股份有限公司 | A kind of pre-tensioning system compensation device of detachable power and its method for the construction of pre-tensioning system broken-line reinforcement |
| CN108086591A (en) * | 2018-02-08 | 2018-05-29 | 湖南工业大学 | Shaped steel-ultra-high performance concrete prestress combined beam |
-
2015
- 2015-09-30 CN CN201520771752.8U patent/CN204955098U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575031A (en) * | 2017-09-21 | 2018-01-12 | 柳州欧维姆机械股份有限公司 | A kind of pre-tensioning system compensation device of detachable power and its method for the construction of pre-tensioning system broken-line reinforcement |
| CN107575031B (en) * | 2017-09-21 | 2023-01-24 | 柳州欧维姆机械股份有限公司 | Pretensioning compensation device capable of unloading force and method for pretensioning broken line reinforcement construction |
| CN108086591A (en) * | 2018-02-08 | 2018-05-29 | 湖南工业大学 | Shaped steel-ultra-high performance concrete prestress combined beam |
| CN108086591B (en) * | 2018-02-08 | 2023-05-05 | 湖南工业大学 | Profile steel-ultra-high performance concrete prestress combined beam |
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Address after: 610000 area a and B, 8th floor, Sichuan Expressway Building, No.90, West 1st section of 2nd Ring Road, Wuhou District, Chengdu City, Sichuan Province Patentee after: Sichuan Communications Construction Group Co.,Ltd. Address before: 610000 area a and B, 8th floor, Sichuan Expressway Building, No.90, West 1st section of 2nd Ring Road, Wuhou District, Chengdu City, Sichuan Province Patentee before: SICHUAN JIAOTOU CONSTRUCTION ENGINEERING Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 610047 area a and B, 8th floor, Sichuan Expressway Building, No.90, West 1st section of 2nd Ring Road, Wuhou District, Chengdu City, Sichuan Province Patentee after: Sichuan Communications Construction Group Co.,Ltd. Address before: 610000 area a and B, 8th floor, Sichuan Expressway Building, No.90, West 1st section of 2nd Ring Road, Wuhou District, Chengdu City, Sichuan Province Patentee before: Sichuan Communications Construction Group Co.,Ltd. |