CN100567680C - Backstay cable lever stretching device - Google Patents
Backstay cable lever stretching device Download PDFInfo
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- CN100567680C CN100567680C CNB2008100239500A CN200810023950A CN100567680C CN 100567680 C CN100567680 C CN 100567680C CN B2008100239500 A CNB2008100239500 A CN B2008100239500A CN 200810023950 A CN200810023950 A CN 200810023950A CN 100567680 C CN100567680 C CN 100567680C
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Abstract
Backstay cable lever stretching device is prestressed stretch-draw is carried out in Construction of Civil Engineering to drag-lines such as steel tendons a kind of device, this device utilizes lever principle, locate to insert and put at drag-line rope head shoulder (5) and fix the free bearing of an energy as balance pivot, comprise free bearing the latter half (6), free bearing the first half (7), main force transmission beam (8) is shelved on this free bearing as lever and can does swing a little; One end of drag-line adjusting screw(rod) (4) is connected with drag-line rope head shoulder, and the other end is connected with drag-line fork ear anchor head (14), and the other end bearing pin of drag-line fork ear anchor head is connected anchoring otic placode (1) and goes up composition drag-line cable body; Inferior force transmission beam (2) is supported on the drag-line fork ear anchor head, main force transmission beam (8), inferior force transmission beam two ends symmetry respectively penetrate a power transmission screw rod (3) parallel with the drag-line cable body, wherein on a power transmission screw rod hydraulic pressure punching jack (10) is installed, the two ends of another root directly use hold-down nut (12) to be fixed on main force transmission beam, the inferior force transmission beam.
Description
Technical field
The present invention is prestressed stretch-draw is carried out in Construction of Civil Engineering to drag-lines such as steel tendon twisting, steel wire bundle assembling or reinforcing pull rods a kind of device.
Background technology
In the prestressed steel structure of civil engineering, rope membrane structure, curtain wall rope bar supporting construction, all there is drag-line need apply pretension.Drag-line can be various ways such as the half parallel twisting of high-strength steel tow, many steel strand assemblings or rod iron pull bar.At present, drag-line is applied the main method of pretension for insert and put force transmission beam at the shoulder place of stay cable end rope head both at home and abroad, in the both sides of drag-line cable body two or many hydraulic jack are arranged symmetrically on the force transmission beam of rope head both sides, synchronously the rope head is applied stretching force with the feed-through hydraulic jack, and simultaneously turn drag-line adjusting screw(rod) or in the branch sleeve of positive and negative tooth is arranged, Jiang Suotou is fixed in the anchoring otic placode and keeps required pretension in the cable body.
Another kind of drag-line stretcher is used to the glass curtain wall supported drag-line tensioning of rope.This kind stretcher is to utilize the column that is parallel to drag-line to be balance pivot, column two ends and two lever crossbeam pin joints, utilize an end of lever to connect the separate unit hydraulic jack that applies roof pressure power, make the lever beam be a spot wobble, form the clamp-type mode of transfer force drag-line is applied pretension with column.This device is positioned at balance pivot under the condition of lever crossbeam mid point, and the pretightning force that drag-line is applied equals the roof pressure power that hydraulic jack is exported.
Summary of the invention
Technical problem: the purpose of this invention is to provide a kind of backstay cable lever stretching device that only can realize being doubled in jack output stretching force with the separate unit hydraulic jack in the drag-line single side face.
Technical scheme: backstay cable lever stretching device of the present invention utilizes lever principle, insert and put at drag-line rope head shoulder place and to fix the free bearing of an energy as balance pivot, comprise free bearing the latter half, free bearing the first half, main force transmission beam is shelved on this free bearing as lever and can does swing a little; One end of drag-line adjusting screw(rod) is connected with drag-line rope head shoulder, and the other end of drag-line adjusting screw(rod) is connected with drag-line fork ear anchor head, and the other end bearing pin of drag-line fork ear anchor head is connected forms the drag-line cable body on the anchoring otic placode; Inferior force transmission beam is supported on the drag-line fork ear anchor head, main force transmission beam, inferior force transmission beam two ends symmetry respectively penetrate a power transmission screw rod parallel with the drag-line cable body, wherein on a power transmission screw rod hydraulic pressure punching jack is installed, the two ends of another root directly are fixed on main force transmission beam, the inferior force transmission beam with hold-down nut.
Relative angle variation rotation when swinging and between the power transmission screw rod for solving main force transmission beam, respectively at main force transmission beam and hydraulic pressure punching jack and main force transmission beam and do not install between the hold-down nut of power transmission screw rod of punching hydraulic jack concavo-convex spherical pad is installed, the synthetic compound gasket of this concave spherical surface and protruding sphere can slide in main force transmission beam amplitude of oscillation scope, avoids the power transmission bent screws.Described free bearing the first half and free bearing the latter half are formed the amount free bearing, wherein free bearing the first half is two protruding cylinder surface pieces, free bearing the latter half is the fluted column face respectively to be arranged and can surround the cushion block that is fixed on the drag-line rope head shoulder, the convex cylindrical piece of free bearing the first half is shelved on the fluted column face of the latter half, free bearing can do a little swing up and down between two parts.
The present invention utilizes lever principle, inserts and puts at drag-line rope head shoulder place and fixes the free bearing of an energy as balance pivot, and main force transmission beam is shelved on this free bearing as lever and can does swing a little.Primary and secondary force transmission beam two ends symmetry respectively penetrates a power transmission screw rod parallel with the drag-line cable body, wherein on a power transmission screw rod hydraulic pressure punching jack is installed, and another root directly is fixed on the primary and secondary force transmission beam with hold-down nut.Power transmission screw rod two ends afterbody all has hold-down nut.Start oil pump and give hydraulic pressure jack fuel feeding, piston stretches out, and drives main force transmission beam and is a spot wobble with the free bearing at rope head shoulder place.Because all there is the length between the fixing main force transmission beam of nut and time force transmission beam at two power transmission screw rod two ends, so lever principle obtains utilization, and the separate unit jack pair drag-line rope head that is positioned at cable body one side has produced the stretching force of twice.When solving the swing of main force transmission beam with the power transmission screw rod between the angle variation that causes because of rotation, respectively between main force transmission beam and hydraulic jack, between the hold-down nut of main force transmission beam and power transmission screw rod (screw rod of punching hydraulic jack is not installed) concavo-convex spherical pad is installed, the synthetic compound gasket of this concave spherical surface and protruding sphere can slide in main force transmission beam amplitude of oscillation scope, avoids the power transmission bent screws.
Beneficial effect: when engineering structures drag-line group rope needs the multiple spot synchronous tension, each drag-line stretch-draw point only can be finished the drag-line stretch-draw work that originally must adopt two jack just can finish with a jack, directly saved the quantity of jack and supporting oil pump, also direct saving the displacement stretch-draw workload of jack and oil pump.
Description of drawings
The present invention is described in more detail below in conjunction with drawings and Examples:
Fig. 1 is a unitary construction schematic diagram of the present invention.
Fig. 2 is an operating principle schematic diagram of the present invention.
Fig. 3 a is the free bearing assembling elevational schematic view that is fixed on the drag-line rope head shoulder.
Fig. 3 b is the free bearing assembling floor map that is fixed on the drag-line rope head shoulder.
Fig. 3 c is each loose mail schematic three dimensional views of free bearing that is fixed on the drag-line rope head shoulder.
Fig. 3 d is the free bearing three assembling schematic diagrames that are fixed on the drag-line rope head shoulder.
Fig. 4 a is the concavo-convex compound gasket generalized section that is placed between hydraulic jack and main force transmission beam, adjusting screw(rod) nut and main force transmission beam.
Fig. 4 b is each loose mail schematic three dimensional views of concavo-convex compound gasket that is placed between hydraulic jack and main force transmission beam, adjusting screw(rod) nut and main force transmission beam.
Fig. 4 c is the three-dimensional assembling of the concavo-convex compound gasket schematic diagram that is placed between hydraulic jack and main force transmission beam, adjusting screw(rod) nut and main force transmission beam.
Have among the figure: anchoring otic placode 1, inferior force transmission beam 2, power transmission screw rod 3, drag-line adjusting screw(rod) 4, the plain caster bed shoulder 5 of drag-line, free bearing the latter half 6, free bearing the first half 7, main force transmission beam 8, concavo-convex spherical pad 9, hydraulic jack 10, plain cushion 11, hold-down nut 12, hydraulic power station 13, drag-line fork ear anchor head 14.
The specific embodiment
In Fig. 1, anchoring otic placode 1 is formed basic drag-line system to be tensioned with drag-line.The ingredient of tensioning equipment of the present invention comprises: inferior force transmission beam 2, power transmission screw rod 3, free bearing the latter half 6, free bearing the first half 7, main force transmission beam 8, concavo-convex spherical pad 9, hydraulic jack 10, plain cushion 11, hold-down nut 12 are formed stretch-draw with hydraulic power station 13.Insert and put at drag-line rope head shoulder 5 places and to fix the free bearing of an energy as balance pivot, comprise free bearing the latter half 6, free bearing the first half 7, main force transmission beam 8 is shelved on this free bearing as lever and can does swing a little; One end of drag-line adjusting screw(rod) 4 is connected with drag-line rope head shoulder 5, and the other end of drag-line adjusting screw(rod) 4 is connected with drag-line fork ear anchor head 14, and the other end bearing pin of drag-line fork ear anchor head 14 is connected forms the drag-line cable body on the anchoring otic placode 1; Inferior force transmission beam 2 is supported on the drag-line fork ear anchor head 14, main force transmission beam 8, inferior force transmission beam 2 two ends symmetries respectively penetrate a power transmission screw rod 3 parallel with the drag-line cable body, wherein on a power transmission screw rod 3 hydraulic pressure punching jack 10 is installed, the two ends of another root directly are fixed on main force transmission beam 8, the inferior force transmission beam 2 with hold-down nut 12.
Assembling sequence is: two dimples of free bearing the latter half 6～have semicolumn concave surface are surrounded with bolt be fixed on the drag-line rope head shoulder 5.7～two semicolumn convex surfaces of free bearing the first half piece is installed between main force transmission beam 8 and free bearing the latter half 6, and the median pore radius of main force transmission beam 8 is greater than drag-line cable body diameter and can do swing a little on free bearing.At main force transmission beam 8 and 2 of inferior force transmission beams two high strength stretch-draw power transmission screw rods 3 are installed, respectively penetrate a plain cushion 11 on two power transmission screw rods 3 of inferior force transmission beam 2 lateral surfaces, respectively penetrate a secondary concavo-convex spherical pad 9 on two power transmission screw rods 3 of main force transmission beam 8 lateral surfaces, a feed-through hydraulic jack 10 is inserted in the stretch-draw power transmission screw rod 3 that is positioned at drag-line cable body one side, and power transmission screw rod 3 afterbodys are all fixing with hold-down nut 12.
In fundamental diagram shown in Figure 2, inferior force transmission beam 2 directly is supported on drag-line fork earing head place, and main force transmission beam 8 directly is supported on drag-line rope head shoulder 5 places by free bearing.Before the drag-line stretch-draw, regulate no hydraulic pressure jack 10 side hold-down nuts 12 and make main force transmission beam 8 produce swing a little around free bearing.During drag-line stretch-draw, start hydraulic power station 13, the punching piston elongation of the hydraulic jack 10 of cable body one side, driving main force transmission beam 8 is that lever symmetry intermediate support is done swing a little with the free bearing on the drag-line rope head shoulder 5, because the cable body opposite side has the distance between power transmission screw rod 3 and hold-down nut 12 fixing main force transmission beams 8 and the inferior force transmission beam 2, therefore, free bearing place at lever master force transmission beam 8 produces the stretching force that doubles hydraulic jack 10 power outputs, regulate the pendulum angle and the master of main force transmission beam 8 continuously with the hold-down nut 12 of power transmission screw rod 3, distance between inferior force transmission beam, constantly tighten drag-line adjusting screw(rod) 4 in the stretching process, that can finish drag-line tightens up stretch-draw continuously.At this moment, only just can finish general conventional two drag-line stretch-draw that jack just can be finished that need, reach the effect of getting twice the result with half the effort with a jack.
Claims (3)
1. backstay cable lever stretching device, it is characterized in that this device utilizes lever principle, locate to insert and put at drag-line rope head shoulder (5) and fix the free bearing of an energy as balance pivot, comprise free bearing the latter half (6), free bearing the first half (7), main force transmission beam (8) is shelved on this free bearing as lever and can does swing a little; One end of drag-line adjusting screw(rod) (4) is connected with drag-line rope head shoulder (5), and the other end of drag-line adjusting screw(rod) (4) is connected with drag-line fork ear anchor head (14), and the other end bearing pin of drag-line fork ear anchor head (14) is connected anchoring otic placode (1) and goes up composition drag-line cable body; Inferior force transmission beam (2) is supported on the drag-line fork ear anchor head (14), main force transmission beam (8), inferior force transmission beam (2) two ends symmetry respectively penetrate a power transmission screw rod (3) parallel with the drag-line cable body, wherein a power transmission screw rod (3) is gone up hydraulic pressure punching jack (10) is installed, and the two ends of another root directly use hold-down nut (12) to be fixed on main force transmission beam (8), the inferior force transmission beam (2).
2. backstay cable lever stretching device according to claim 1, it is characterized in that, relative angle variation rotation when swinging and between power transmission screw rod (3) for solving main force transmission beam (8), respectively at main force transmission beam (8) and hydraulic pressure punching jack (10) and main force transmission beam (8) and do not install between the hold-down nut of power transmission screw rod (3) of punching hydraulic jack concavo-convex spherical pad (9) is installed, the synthetic compound gasket of this concave spherical surface and protruding sphere can slide in main force transmission beam (8) amplitude of oscillation scope, avoids power transmission screw rod (3) bending.
3. backstay cable lever stretching device according to claim 1, it is characterized in that, described free bearing the first half (7) and free bearing the latter half (6) are formed the amount free bearing, wherein free bearing the first half (7) is two protruding cylinder surface pieces, free bearing the latter half (6) is the fluted column face respectively to be arranged and can surround the cushion block that is fixed on the drag-line rope head shoulder (5), the convex cylindrical piece of free bearing the first half (7) is shelved on the fluted column face of the latter half (6), free bearing can do a little swing up and down between two parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100239500A CN100567680C (en) | 2008-04-22 | 2008-04-22 | Backstay cable lever stretching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100239500A CN100567680C (en) | 2008-04-22 | 2008-04-22 | Backstay cable lever stretching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101265750A CN101265750A (en) | 2008-09-17 |
| CN100567680C true CN100567680C (en) | 2009-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2008100239500A Active CN100567680C (en) | 2008-04-22 | 2008-04-22 | Backstay cable lever stretching device |
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| CN (1) | CN100567680C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106567546A (en) * | 2016-10-26 | 2017-04-19 | 东南大学 | Labor-saving type cable force adjusting device |
| CN108104335B (en) * | 2017-11-17 | 2023-10-20 | 苏州科技大学 | Assembled flexible dry hanging system of curtain wall |
| CN108221668B (en) * | 2018-02-02 | 2023-11-24 | 柳州桂桥缆索有限公司 | Adjustable inhaul cable for constructional engineering and tensioning method thereof |
| CN109296208A (en) * | 2018-10-18 | 2019-02-01 | 浙江中南建设集团钢结构有限公司 | Tensioning cable assembly system and its assembly method with centering function |
| CN113463763A (en) * | 2021-04-26 | 2021-10-01 | 北京市建筑工程研究院有限责任公司 | Construction method of super-long cantilever cable bearing grid structure |
| CN117449608B (en) * | 2023-12-26 | 2024-03-12 | 福建理工大学 | A self-leveling carbon fiber board prestressing force tensioning equipment for cambered surface structure |
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- 2008-04-22 CN CNB2008100239500A patent/CN100567680C/en active Active
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| CN101265750A (en) | 2008-09-17 |
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